Abstract:It is difficult to control the quality and progress of construction because of the difficulty of material selection and difficult construction of filling slope.Through the physical model test and numerical simulation,we preliminary study the feasibility of using artificial block instead of stone layer.Based on the result of the model test,a three-dimensional breakwater model which is closer to the actual sea conditions is built via CAD and CFD.And it is validated effectively by wave theory and model test.It gives the effects of different cushion types on wave run-up.The fluid force of armor blocks and flow field distribution are discussed.The results indicate that it is feasible to substitute artificial block for stone layer.It provides the basises for exploration the dynamic characteristics when the protective layer is instability,and it can provide some references for analysis the feasibility of using artificial block instead of stone layer in further engineering design.

Abstract:The floating breakwater is mainly moored by chains or piles,et al.For the vertical pile-restrained floating breakwater,the motion of the floating body is mainly one degree freedom of heave.In this paper,the wave attenuation performance and wave force of the vertical pile-restrained single pontoon floating breakwater are studied by the 2D wave physical model tests.The study results show that the wave transmission coefficients of the vertical pile-restrained single pontoon floating breakwater increase with the relative width B/L decreasing under the same wave height.For the same relative width of the floating pontoon,the wave transmission coefficients of the vertical pile-restrained single pontoon floating breakwater are relatively small under relative large wave height,especially for conditions with large relative width (B/L＞0.2).Compared to the floating breakwater moored with chains,the wave transmission coefficients of the vertical pile-restrained floating breakwater are significantly reduced and the wave attenuation performance is significantly improved due to the fact that the wave reflection and wave energy damping are both significantly enhanced.Under wave action,the forward direction wave force of the vertical pile has a trend of decreasing with the relative width B/L decreasing (just the increasing of the wave period),and the opposite direction wave force has no significant varying trend with the relative width B/L varying.

Abstract:The water depth of a deepwater breakwater is 18～30 m,and the soft soil layer is more than 30 m.In order to test the foundation stability and foundation settlement of the design scheme for the excavation of the slope embankment,the experiment of the soft soil foundation centrifugal model was carried out.The experimental results show that the resistance partial factors of circuler sliding foundation is 1.19,which is consistent with the stability result according to the specification.The settlement amount of the foundation is about 50% of the total settlement amount,and the test value seems to be small.The experiment verifies the feasibility of the design scheme.

Abstract:Environmental load plays a key role in the force and motion response of mooring system.It is necessary to research the key environmental parameters of the mooring system,and reveal the environment parameters on the effect and influence mechanism of the mooring system.Based on the potential flow theory,combined with the large water dynamics software AQWA,we take a simple rectangular pontoon structure as the typical example.Based on the floating body,related technical requirements and basic parameters,we establish mooring system dynamic analysis calculation model by the tension and catenary two different ways.The results show that within the scope of the discussion,mooring force increases with the increase of wind speed as the flow velocity and flow direction.For transverse oscillation and roll,with the increase of environmental parameters such as flow rate,wind speed,swaying and roll curve show increasing trend.The tension mooring type can maintain stability of the mooring system better.

Abstract:With the increase of the construction of the artificial sandy beach above the tidal flats,the research of artificial beach profile’s transverse sediment transport has a very important and practical significance.It is complicated to build artificial beach on the original beach that is adapted to the coastal dynamic.The artificial beach in practical project is affected by engineering measure,so the profile form is more difficult to predict.Based on the method of physical model test,the form changes of the artificial beach profile restricted by the debris barrier and the protection of bank are studied in different water level and wave conditions.At the same time,the equilibrium profile model is used to calculate the relative stable profile,and the conditions needed to form a stable profile are obtained.The results of the experiment verify the applicability of 1:15 of the initial bank slope,and conclude that when the structure has few influence on wave,a balanced beach profile could be formed.

Abstract:Based on the measured hydrologic and sediment data in Dafeng Port area,we take five widely used sediment carrying capacity formulas to caculate in this area.On this basis,we choose the concentration coefficient and deviation coefficient method to make the comparative analysis of calculation results.The results show that the estuarine sediment carrying capacity formula in Dafeng Port area can reflect the sediment transport,and fit for Dafeng Port area sediment carrying capacity formula.These formulas are applied to calculate the sediment change trend after reclamation in the Dafeng Port reclamation project.The numerical simulation results are basically the same with the calculated ones.The empirical relation in Dafeng Port area has good applicability.

Abstract:Aiming at the problem of port-city integration planning about the port-city separation type city,the paper takes Qinzhou Dalanping as example to analyze the points of port-city integration planning about function,industry,space layout,port planning and transportation system,and puts forward suggestions as follows:making plans according to circumstances,paying attention to the role of industry,planning the port and city transportation system as a whole,and dealing with the relationship between elasticity and control.

Abstract:Aiming at the seawall safety problems in the context of global climate change,sea level rise and the white-hot advance of large-scale reclamation projects,a review research on the status of seawall monitoring in China is carried out.Using the innovative research methods of big data analysis and based on the China Journal Full-text Database CNKI,the current situation of seawall monitoring in China is analyzed from four aspects,i.e.seawall detection and monitoring theories,seawall safety detection,long-term monitoring of seawall safety and typical cases of seawall monitoring.The results are as follows.Most of the existing seawall monitoring are focused on the monitoring of the construction period,and the research on the hidden dangers of the old seawall is not comprehensive and thorough.Two branches of osmotic pressure and sedimentation theory in the theory of seawall monitoring are summarized,and it is pointed out that neither of them has mentioned the influence of waves on the seawall,and suggested that the wave data should be incorporated into the influencing factors such as osmotic pressure and settlement of seawall.It is pointed out that although people have a certain understanding of all kinds of detection methods,and suggested to put forward a set of standardized integrated methods for detecting hidden dangers of seawalls.It is suggested that the study of long-term monitoring of seawall safety is still in the preliminary stage,and the monitoring data of marine deformation monitoring and marine hydrological monitoring data should be synchronized and integrated to predict the safety of seawall in real time.

Abstract:To analyze the impact of quantitative assessment of LNG ship navigation,this paper uses multi-agent simulation technology to establish a complete set of evaluation indices based on the simulation modeling platform.Taking the LNG project in Jiaxing port for example,the simulation model proposed makes use of the interrelations of agents and characteristics of the real-time interaction to carry out the modular development of elements involved in the port operation system,which can scientifically and effectively simulate the actual operation of the port.Considering the comprehensive analysis of all indices,we draw the conclusion that the LNG ships in Jiaxing Port have limited impact on its port operations.

Abstract:In order to make rational use of port resources and reduce the malicious competition between ports,this paper presents a method for the study of the evolution law of port groups based on the rank-size rule.This method uses throughput as an index to measure port scale,and adopts variation coefficients and Gini coefficients to study the difference of regional port group scale.Besides,the primacy index is used to determine whether the regional port group obeys the rank-size distribution.Then,the rank-size rule is applied to study the scale distribution of regional port groups and quantitatively analyze development and evolution law of regional port group.Finally,we choose the EU ports group as a case study.The results indicate that the size of the EU port group is quite different and the degree of imbalance will increase year by year;the EU port group conforms to the rank-size rule,and the throughput growth rate will decrease with the ports rank from high to low.

Abstract:The high-piled wharf faces potential safety hazard due to large displacement while subjected to large horizontal force.So,this paper carries out the research on the magnitude of resistance to horizontal force of batter-piles and horizontal braces in high-piled wharf.The influence of the inclination and rotation angle of the batter-piles on the internal force and displacement of the fascia beams and piles is discussed in this paper,basing on the high-pile bent frame structure model established by CAD integrated software for transport engineering structures.Meanwhile,the comparison about magnitude of resistance to horizontal force between batter-piles and horizontal braces is conducted.The result shows that the effect of reducing the displacement of the bent structure with batter-piles is much better than the structure with horizontal braces while subjected to horizontal force.

Abstract:Based on the principle of layer-wise summation method calculated settlement,a theoretical method has been deduced to calculate settlement and rotation of block wall of gravity quay for dry construction,and the calculated values of settlement and rotation are compared with measured values on trial section of gravity quay.The results show that calculated values are consistent with measured values of settlement and rotation of block wall;the values of settlement and rotation increase with the increase of blocks layers;after the wall backfill and the wall preloading load,the settlement of the toe of the wall continues to increase,and the settlement of the rear of the wall is decreased;the rotation of quay wall becomes greatest after preloading.In the project of gravity quay,the theoretical calculation method can be applied to calculate settlement and rotation and evaluate preloading effect of quay wall in advance,and estimate preset slope of cast-in-situ concrete blinding.

Abstract:The salt spray gathering in the grillage space of piled beam-slab wharf easily makes the beams corroded in the harsh marine environment,which can cause an adverse impact on the durability of structure.Using the fluid dynamic module CFD of ANSYS,we establish the three dimension model of grillage space of piled beam-slab wharf.For various vent forms,we analyze the wind speed and pressure in salt spray concentration area of piled beam-slab wharf,and optimize the vent setting based on the results of the dissipation effects for salt spray.The results show that the vent setting in the longitudinal beam could improve air flow distribution of grillage space effectively,and as the distance between the vent and two ends of beam was 1.2 meters the dissipation effect for salt spray is most significant.

Abstract:Taking the Fujairah strategy grain storage project in United Arab of Emirates as example,the paper presents the design application of raft foundation for ship loader/unloader in quay-wall of sheet-pile.Both static load tests in field and finite element model simulation are integrated to determine the foundation reaction coefficient during the design of the raft foundation.On this basis,the internal forces of the raft foundation are calculated and the reinforcements are designed.Using numerical simulation technology,the settlement deformation of the front rail bearer and rear rail bearer and the equivalent uniformly distributed load on the wharf surface can meet the corresponding design criteria under different working conditions.The results of the observation settlement in a continuous year indicate that the settlement of the observation points of the front rail bearer and rear rail bearer and the relative settlement values can meet the technical requirements of the equipment manufacturers of the loading and unloading machines.

Abstract:Wave is the most important hydrodynamic factor in the construction of fishing harbors.Owing to the strong influence of offshore wind,it is necessary to build breakwater project.In this paper,the layout of breakwater is studied from the perspective of wave.Based on the analysis of the construction conditions of the Xiaoguoju Fishing Port,the paper discusses the standard of the wave protection and puts forward eight linear or folding layout schemes of the breakwater.In order to satisfy the effective berth area of the fishing boat,the MIKE21 BW module is used to calculate the wave height distribution and wave protection effect of the dam after the wave and water level combination under the condition of 50-year return period wave and water,and the eight schemes are studied.Based on the relative optimal scheme,two schemes are optimized.Ultimately we determine the optimal solution for a fishing port breakwater layout:breakwater total length is 350 m,folding dike angle is 132°,linear segment length is 122 m,and line length is 228 m.

Abstract:This paper introduces the general layout,loading and unloading technology,hoisting of major parts,structure design and environmental protection for a power plant wharf in China.We put forward a creative scheme which proposes the integration of the power plant wharf and the intake port and the unloading of coal terminal platform to carry out the important hoisting of power plant.The reasonable measures to optimize the layout of the wharf are put forward.These measures save the coastal resources of the Yangtze River,reduce dust and water pollution,lower project investment,which can serve as reference for similar projects.

Abstract:Based on the measured underwater topographic data and the results of the mathematical model,we analyze the characteristics and causes of Jiangya south shoal regime evolution in South Passage of the Yangtze Estuary.The results show that the channel developed in the head of Jiangya south shoal,the lower segment of Jiangya south shoal silt towards downstream,and 5 m deep tail of the shoal extended downward and forms the maintenance difficult section of South Passage 5.5 m channel.Meanwhile,Jiangya north channel scours and develops mainly because of the water level difference between the main channel of South Passage and Jiangya north channel and continuous development of the South Passage riverbed.With the development and transfixing of the channel in the head of Jiangya south shoal and Jiangya north channel,new diffluent outlet will form in South Passage,which has an adverse effect on the regime evolution and channel regulation of South Passage.

Abstract:This paper studies the evolution characteristics of Baimaosha waterway based on the topographic and hydrological data.It is found that under the new boundary condition of the waterway and actions of typical floods,the diversion point of stream moves to the southeast,but the confluence point moves to the northwest.The north channel talweg of Baimaosha waterway continues moving to the north,and the south one rarely swings between Xinjin River and Qiyakou these years.Sediment deposits on Baimaosha shoal,which leads to a increase of the area and volume.It is broad on the surface of Baimaosha waterway for the south channel when the area of the south channel increases but decreases for the north channel.The whole Baimaosha reach appears deposition when erosion occurs for the deep channel at the same time.

Abstract:A three-dimension numerical model for the filling system of Baima Junction with water-saving lock is established to investigate hydraulic characteristics and mooring force with the normal operation scheme.The results show that the filling time is extended by 6.7% via a schedule of advanced valve opening of the next basin as compared to the same lock without basins.Furthermore,the first and second peaks of the flow rate among three peaks decrease by 30.98% and 31.6% respectively,while the third one increases by 15.16%.In addition,the longitudinal maximum mooring force and transverse maximum mooring force decrease by 36.25% and 44.18% respectively.The parameters of the hydraulic characteristics meet the specifications and design requirements.

Abstract:To solve the channel stability problems of goose-head shaped branch channel in Taizi waterway，this paper analyzes the recent evolution and channel conditions of Taiziji channel in the lower reaches of the Yangtze River based on the river topographic and hydrological data.The result shows that Taiziji channel keeps the pattern of two branches,with the right branch as the main and the lest as the branch.The east port in the right branch occupies the main position during the dry season，and the west port gets somewhat development.The reef blasting project only increases the diversion of the east port during the dry season.During the middle flood period the mainstream goes straight.Erosion is possible to occur at the convex low beach,and there is still room for slow erosion in the west port.In the water diversion area,the central bar changes frequently which affects the channel condition of the east port.Attentions shall be paid to the influence of the west port and scouring & silting in river beach development on the import and middle channel condition of the east port.

Abstract:Under the institution background of developing the Yangtze River waterway in China,we put forward the conception of the Yangtze River waterway carrying capacity for the first time to realize the sustainable development of construction of the Yangtze River on the basis of the construction of ecological waterway,which meets several kinds of targets,including:the core requirement for ecological benefits,multiple requirements for both economic and social development and the requirement for full utilization of the Yangtze River water resources.We analyze the structural relationship of the Yangtze River waterway carrying capacity by referencing the theoretical system of carrying capacity from extant literature and applying both system theory and synergy theory.Finally,we conclude the exact definition,connotation,features and operation mechanism for waterway carrying capacity.

Abstract:The rump of Xiangjiang River is located in Dongting lake district,which is river & lacustrine facies,and the hydrological changes are complicated.To explore the change of low water level in the rump section of the Xiangjiang River,we carry out an analysis from multiple factors such as the impoundment of the Three Gorges Reservoir,the construction of the upstream water conservancy project in the Xiangjiang River,as well as the sand mining in the lower reaches of the river.After impoundment of the Three Gorges Reservoir,the water level of Dongting lake outlet（Chenglingji hydrologic station）was slightly elevated,but that of the upstream Xiangjiang River decreased.Under the Changsha junction,there is no overall cut of riverbed.Although the coming sediment produced by three inlets and four branches of the lake year by year,it is significantly less than the amount of sand mining.The study result indicates that，the main reasons for constant slice of low water level in the Xiangjiang River trail reach lies in the large-scale sand mining in the river channel,which greatly destroys the riverbed form,thus not only seriously affects normal transport in the Xiangjiang River trail channel and threatens wading buildings’ safety,but also causes much destruction to the ecological environment.It is necessary to strengthen the scientific planning and management of sand mining in the Dongting Lake.

Abstract:In this paper,the reach from the upper Luoqi to the lower Luoqi in the Fuling-Luoqi waterway is the research area.An unstructured triangular mesh hydrodynamic model is established on the measured topographic map of 1:1 000 scale,which is based on the method of volumetric method used to solve the two-dimensional hydrodynamic equation,to study the trend of the calculation results of the model in the multi-group relative grid ratio.It is found that the effect of the relative grid ratio on the calculation results of the calculation points in the flood is much greater than that on the calculation points in the river valley.When the relative mesh ratio is less than 1,the calculation results of the hydrodynamic model in the river have changed little,especially the average relative deviation of the river channel is close to zero.When the relative grid ratio is greater than 1,the average relative deviation of the model calculation results gradually increases.And when the relative grid ratio is large enough to stabilize,the average relative deviation of the calculated results in the flood area is larger than that of the river channel.With the increase of the relative mesh ratio,the average relative deviation of the calculation results of the hydrodynamic model in different water depth areas is different.

Abstract:Taking the double-row steel sheet pile cofferdam in first phase reclamation project of Oufei as the project background,we introduce the construction scheme and technology for the double-row steel pile cofferdam built in coastal deep soft soil foundation.For studying the safety of double-row steel sheet pile cofferdam structure,we calculate the anti-overturning and the global stability of the cofferdam,carry out a numerical analysis of the whole construction process of cofferdam by the finite element method,and obtain the stress state of the steel sheet pile and tie rod and the deformation of the cofferdam under different construction conditions.The research shows that:the safety of cofferdam structure meets the specification requirements,the deformation of cofferdam calculation by finite element method is larger than that under the actual condition,which proves that the analysis of cofferdam structure safety by this method tends to be safety;the construction condition of the maximum internal force in the steel sheet pile and the tie rod is different between the front and rear of cofferdam.It is suggested that the whole construction process should be simulated during the cofferdam design to select the worst conditions of each structure.There are certain risks using the mean high tide level to analyze the safety of cofferdam structure,and the design high tide level is recommended.

Abstract:For the construction of the wharf on the soft ground may cause structural cracking or even slip instability and other issues,we discuss the characteristics of the application of the three major wharf types at home and abroad on the soft soil foundation.Based on the design of Nantong Port，which is combined with the geological conditions of the project area of the terminal structure of the type of comparison study,we put forward a type of structure-cement mixing pile composite foundation+closely packed piles composite,and analyze its mechanical properties.The results show that the composite piles can not only solve the problem of the construction of the piles on the weak soil foundation,but also have the advantages of not occupying the pond,the construction speed,the low cost and the influence of the wind and waves.

Abstract:In the process of land reclamation consolidation,it is easy to form soft clay packages,which bring difficulties to the analysis and explanation of the field test data.So it is important to locate soft clay packages.This paper proposes a method of detecting the soft clay packages formed in land reclamation consolidation process with Rayleigh wave.The lateral resolution is improved with two-channal Rayleigh wave method,and cone penetration test is conducted simultaneously.The comparison of the two methods shows the validation of Rayleigh wave method in detection of the soft clay package.Two-channal Rayleigh wave velocity hot map for a larger range can be drawn by test several times continuously in a line,from which soft clay packages and their basic properties can be seen directly.

Abstract:Based on the FLAC software,a three-dimensional model is established.The effects of different tamping energy and tamping times number on the dynamic compaction are simulated.The changes of the Young’s modulus before and after the dynamic compaction are analyzed.The results show that the thickness of the sand layer and the distribution of the soft soil layer on the surface play a great role in determining the tamping energy.For the lower lying loose sand layer,the depth and effect of treatment can be increased by increasing the tamping energy and times (7～8).For the lower lying soft clay layer,the reinforcement effect can be improved by reducing the tamping energy and increasing the tamping times.After tamping,the Young’s modulus of the surface blowing sand is greatly improved,from the original 10 MPa to 20～40 MPa.

Abstract:ABAQUS,a finite element program,is selected to simulate vertical load condition of slope rock-socketed pile in port engineering in mountainous river.The modeling process includes drilling in rock slope,pouring pile concrete,bearing load condition of pile foundation etc.The nonlinear effects of material and pile-rock contact are taken into account when three-dimensional models of the slope rock-socketed pile system are established.Based on the analysis for parameters of slope angle,pile diameter and socketed depth etc,the influence degree of slope angle on vertical bearing capacity of rock-socketed pile is put forward,and the vertical bearing characteristics of slope rock-socketed pile are analyzed.The research results show that the vertical bearing capacity of slope rock-socketed pile is obviously affected by loss effect of rock mass before pile and enhancement effect of rock mass behind pile when the slope angle is changed.In engineering design,the influence of slope angle,pile diameter and rock-socketed depth on the vertical bearing capacity of slope rock-socketed pile should be considered comprehensively,and reasonable design parameters should be determined through the comparison of economy and applicability.

Abstract:Earth-rock seawall as a kind of traditional embankment type is widely used in port and waterway engineering.Because of the limitations on earth-rock seawall,its building construction defects and improper operation make it tend to have serious security problems such as seepage failure and a serious threat to the safety of buildings.In view of the existing engineering,this paper puts forward a new type of cement stabilized soil dikes seepage control structure,uses the finite element software ADINA,adopts Moore-Coulomb and Druker-Prager elastic-plastic constitutive model,and analyzes the average earth-rock seawall and cement solidified soil with different seawall embankment slopes the same dirty effect of fluid-solid coupling seepage field and stress field,strain field by numerical simulation.The results show that the cement stabilized soil can reduce the seawall,inside and outside embankment slope gradient to save the land resources,and save the whole of the engineering project investment.It is a kind of simple and reliable method.

Abstract:During the working process of a trailing suction hopper dredger,the height of sand bed and the soil type as the main bases to adjust the dredging operator’s strategy,cannot be directly measured by sensors currently available onboard.Considering the sedimentation model of a hopper,we simulate the changes of soil type by two scenarios while dredging after analyzing the sand bed and soil grain diameter,the most important soil-dependent parameter.We take Xinhaifeng dredger’s construction data as an example to calibrate the model used in practical.The pattern search calculates the average soil grain diameter of one working condition offline.We use particle filter algorithm to estimate the sand bed height and soil grain diameter online on the basis of verifying the dynamical sedimentation model.The simulation results show that the model of the grain diameter as a random walk contributes to a better performanc of fitting the logistic curve of the total loading mass.On the other hand,the sand bed height has a relationship with the situ soil excavated.The results provide a reference for dredging engineering,which can be applied in the decision-support systems of the hopper dredger.

Abstract:The new adjustable sleeper is a new structure which can be adjusted with high precision and high efficiency.The sleeper body structure is provided with embedded steel plate,casing and nut.Through connecting the bolt and the upper adjustable support,and inserting the adjustment plate between the sleeper body and the adjustable support,the purpose of rapid adjustment of uneven settlement is achieved.However,due to the addition of embedded casing and connecting bolts,we need to study whether the bearing capacity and fatigue durability of this new structure and bolt pull-out resistance can meet requirements of the heavy-duty and highly frequency used mechanical.Through relevant experimental research,the reliability of this new kind of sleepers is verified.

Abstract:When a heavy-duty cutter suction dredger is used for rock channel dredging,the minimum dredging depth and width are under restrictions.We carry out the computing method of confirming the minimum dredging depth and width.We introduce the calculation method of the minimum depth and the width under different wave conditions，which is based on standard specification and geometry size of the dredger.We work out the minimum dredging depth and width by this method in a project example.The method is proved to be useful.

Abstract:Aiming at the vibration and shock problems induced by underwater blasting tamping of rubble bed,the water shock wave positive pressure and the blasting vibration velocity are monitored combined with the construction of Weihai port international passenger terminal project.By contrast,we analyze the causes of the significant deviation between the monitored values and the calculated values of the shock wave positive pressure and the horizontal radial particle vibration velocity,and study the effects of the shock wave positive pressure and the blasting seismic wave on the completed wharf.Moreover,we obtain the empirical formula of the water shock wave positive pressure for similar projects by regression analysis of the monitoring data.The analysis results can provide reference for safety technical work of rubble bed blasting ramming construction.

Abstract:If traditional technology of punched cast-in-place piles is used on water,we will meet some difficulties,such as limitations of applicable conditions,environmental pollution and cost increment.Depending on the characteristics of Sanya Phoenix Island project,we expound measures of reducing production cost,reducing pollution,improving the construction efficiency,improving construction quality by optimizing the structure type and layout design of steel platform,optimizing design of mud circulation system,structural stability calculation and application of new equipment.The results show that the measures of technology optimization and platform improvement are effective and practical.

Abstract:In order to improve the bearing capacity of concrete filling pile,based on the theory of concrete compensating shrinkage,we add an appropriate amount of HCSA expansive agent in concrete filling piles.This paper analyzes the influence of different dosages of HCSA on the expansive property of cement mortar and on the strength and volume deformation of concrete,and applies it in the project.According to the result,HCSA expansive agent has faster expansion rate and greater expansion ability,the bearing capacity of pile increases by 34.3% when the HCSA content is 15%,the settlement amount of friction pile using expansive concrete technology is only 36%～44% of ordinary concrete pile,the quality of concrete filling piles is improved.

Abstract:In view of the problem of low efficiency of concrete interlock block and the influence of human factors on the fabric quality under the existing process,the research on the mechanical mechanization of concrete interlocking block is carried out.The concrete spreading process is finished by controlling the switch valve.The diameter of dividing pipe,the spreading height and the spreading operating system are optimized through the field tests. The mechanized process with precise spreading and multi-pipe spreading is developed.The new technology has realized the transformation from traditional manual production process to mechanized automatic production process.It can not only improve the precision and efficiency of spreading,but also eliminate the impact of human factors.Therefore,the new process can meet the needs of mass production of concrete interlocking blocks.

Abstract:The new constructed Hadarom Port in Ashdod,Israel,is an extension project based on the old harbor,with complex and diverse structures.It would be executed under the long-period extreme wave and complex terrain conditions in the open Mediterranean Sea.The present paper introduces several innovative construction technologies into the constructions of breakwaters,piles and stone columns in the open seas based on the wave prediction and terrain analysis.The successful construction experience would support similar projects.