Abstract:To make full use of the advantages of soft mattress and twisted double “H” permeable frame for bottom protection,and reduce the project investment,we study the hydrodynamic characteristics,the protective effect and applicable parts and arrangement of the submerged breakwater downstream’s soft mattress and twisted double “H” permeable frame joint bottom protection by the generalized flume test.The results show that sinking current appears near the dam base and transverse circulation emerges behind the dam;The framework group can effectively slow down the level surface water flow to the beach,but it is unable to reduce the vertical flow of overflow the dike.The framework can not be directly thrown into the base of the dike or the base of the dam,so the framework should be thrown into the soft mattress of bottom edge.A side frame thrown width of about 20 m (5 m overlapping) is advised,and the framework thrown density of 2 sets m2 is the best.The results can provide technical reference for the engineering design.

Abstract:The anti-rolling stability,failure process and critical velocity of 4 commonly applied concrete interlocking blocks are tested and analyzed by physical model tests,Fluent-2D calculation and force tests.The influence of water depth and location (at the edge,lap joint,or middle of the bed-protection mattress) on the block’s anti-rolling stability is also studied.A modification of the formula in the current specification is proposed,involving water depth,block structure and location.Then,3 new-type blocks are designed and compared with the commonly used block.The results show that the anti-rolling stability of the 3 new-type blocks is certainly better than that of the commonly used 4.

Abstract:The superposition method of the linear wave is used to simulate the irregular waves,and the boundary element method in time domain is used to simulate the box floating breakwater under irregular waves.The numerical simulation of irregular waves is built firstly and verified by the theoretical data.Then,the numerical simulation of the fixed box floating breakwater under irregular waves is studied,and the results are compared with those under regular waves.

Abstract:A two-dimensional hydrodynamic model of Caofeidian area is developed by ADI.According to the test model，we get the tidal characteristics of Caifeidian sea area before and after the reclamation project，and analyze the influence degree of the project.The results show that the reclamation project of Caofeidian industry zone has a major impact on Caofeidian water，Laolonggou tidal inlet and Caofeidian harbor.

Abstract:To analyze the characteristics of suspended sediment diffusion caused by excavation underwater,we take an excavation project of a channel on the south side of Culu island in the Minjiang estuary for example,to study the relationship between the diffusion of the suspended materials and the water depth and tide types by a two-dimensional numerical model.The results show that both the increments of suspended load concentration and the areas in which the increments of suspended load concentration more than 10 mgL are larger with shallow excavating sites or neap tides,because the suspended sediments are hard to diffuse.

Abstract:To further study the wave field at Hailong bay,we establish the whole mathematical model to analyze the wave field inside and outside the port.Using the extended parabolic mild-slope equation,we finish the sea-to-port entrance wave deduction and simulate the wave transmission from the offshore to the near-shore.By the elliptic mild-slope equation,we simulate the wave distribution within the port area.The result shows that the recommended breakwater can well shelter the main wave and the recommended scheme is reasonable and feasible.Compared with scheme comparison,wave conditions of recommended design scheme is much better.And the contour map indicates that recommended design scheme is feasible.Overall,the whole mathematical model of wave field at Hailong bay is effective,and it can provide a scientific reference for the engineering practice.

Abstract:To accurately simulate the wave field distribution of Lianyungang sea area during typhoon transit period,we use the atmospheric model WRF to simulate the 10 meters wind speed above the sea level.The wave mode MIKE-SW driven by the wind field is used to simulate the 0713 typhoon waves growing process.The comparisons between the simulated and measured values show that the WRF model successfully simulates the typhoon Wipha’s moving and changing process.Considering the effect of storm surge water’s increase,the MIKE-SW model can reflect typhoon wave’s growing process during the typhoon transit in Lianyungang sea area.

Abstract:As the central knot of global logistics supply chain,a port is involved in logistics services in various ways.Developing port logistics becomes the first choice of many coastal ports of China to enhance their comprehensive competitiveness.This paper studies the concept of port logistics’comprehensive service level,puts forward the structure framework of port logistics’comprehensive service level,and establishes an evaluation index system and model for port logistics’comprehensive level of coastal port based on fuzzy element theory.Furthermore,the application and comparison research are carried out for the typical coastal port of Chinese mainland.The empirical study results show that the fuzzy matter-element theory used for the evaluation of coastal ports’logistics comprehensive service level is very effective,and this evaluation method combined qualitative and quantitative analysis is very practical and simple.The conclusion of evaluation is objective and reasonable,which is helpful for improving the service-environment construction of the main coastal port of Chinese mainland.

Abstract:Based on the statistical analysis of the data concerning the tug allocation of 125 sample vessels,we acquire the allocation laws of large-vessel tugs to serve a technical support for the modification of codes.

Abstract:The artificial sand is rock particles which are less than 5 mm (excluding soft rock and mantle rock particles) manufactured by sand-making equipments.It is characterized by controllable quality,good stability and hardness,and can meet the requirements of physical performance index and durability index such as freeze-thaw resistance and chloride ion permeability for port & waterway engineering concrete adopted in Northern China.In the actual engineering,it shows a satisfactory application effect.Since natural sand is in growing shortage and quality decline,to replace or partly replace the natural sand by the artificial sand can alleviate the adverse impact duo to the lack of sand resource on the engineering schedule,cost,and quality.

Abstract:Some calculation methods of wave run-up stipulated in Chinese codes have some defects,especially under the long wave condition.The formulas of relatively limited applicability even do not take long wave into account.So there is a huge deviation between the calculated value and the actual result,which may cause some potential danger.This paper mainly studies the influences of different types of protective facings of sloping breakwater on the irregular wave run-up through a series of sectional physical model tests and proposes the correlation coefficient and empirical formula to provide theory reference for the design of protective facing on the river side slope which is on open water areas.

Abstract:To know the difference between the plane model and space model,we take a project as an example and establish structure calculation models by Yigong and Robot to analyze and compare each component’s internal force under different loads and models,serving as reference for the selection of calculation model for the beam-slab wharf on high piles.

Abstract:This paper introduces the stress characteristics and deformation of a wharf’s abutment pier on high-level piles in Jiangsu province during the trial operation of two 800 t boom cranes,and verifies it by numerical simulation.The result indicates that the real-measured data of the stress and pier’s overall displacement of the pier’s top & bottom plates and pile foundation can reflect the real state of stress under the load of 8.2 kN and amplitude of 45 m stain of top or bottom of abutment and pile foundation,and they coincides with each other basically.It provides a significant basis for the 3D design method of high-pile pier.

Abstract:The operation process is one of the important contents of container terminal’s planning and design.According to the development of advanced container terminal operation system,we discuss the AGV ALV automation of the container terminal handling system,the spacing rail automatic container terminal system and the layout.We analyze the handling operation performance,including the operation efficiency and the equipment utilization by simulation,discuss a new-type handling systems of automated container terminal,i.e.the viaduct type,and make a comparison of these advanced container terminal operation systems.The research result may serve as reference for the container terminal operation process design and optimization.

Abstract:Using numerical simulation method,we analyze the influence of the pile-beam joints’connection type to the horizontal force state by changing the pile-beam joints’stiffness of high-piled wharf for different connection types.It is pointed out that the pile-beam joints’connection type of high-piled wharf has a significant effect on its stress and displacement,and the general law on joints’connection type to the force state about the all-vertical-piled wharf and fork pile wharf is obtained,which may serve as reference for evaluating the wharf’s bearing performance.

Abstract:Some useful conclusions of T-shape compression-bending structure are summarized through the comparison between concrete code of China (JTS 151—2011) and Britain (BS 8110—1997) in the design concept,formula derivation and crack calculation,which is checked through Egypt project and which may serve as reference for overseas project design.

Abstract:With the rise in sea level,the extreme value and return period of the annual highest water level in coast areas are changed,which insert a significant influence on the determination of the top elevation of coastal engineering.Taking Wusong as a case,we research the top elevation of docks,calculate the return period by the pure experience curve method,and analyze changes of the dock’s top elevation of under the scenario claimed by IPCC AR5.The results show that the sea level rise affects obviously on the determination of dock’s top elevation,especially when the top elevation is not that high.

Abstract:The sheet-pile wharf with separated relieving platform,a new form of wharf structure of recent years,is adaptable to the deepwater berth while maintaining the advantages of the conventional sheet-pile wharf.The theoretical study on its behaviors and working mechanism is still not enough.In order to further understand the traits of their work,we carry out the finite element modeling and static analysis of it using the finite element software ABAQUS,and analyze the function and working status of the relieving platform and group piles,to serve relevant basis for the design and optimization of wharves.

Abstract:The performance degradation is an important factor affecting the service life of high-pile wharf.Other factors,such as ship impact and bank deformat,may cause damage to structures or members during the operation process.To repair and maintain the damaged wharf,there is no scientific and reasonable choosing method in many kinds of maintenance technologies for the high-pile wharf.According to the characteristics of the maintenance technology for the high-pile wharf,we propose special index and evaluation index and establish the evaluation system to compare evaluation indices of deferent maintenance technologies at the same level,and to provide a guidance for the maintenance technology selection and maintenance design method of high-pile wharf structures.

Abstract:The major factors which influence the plane dimensions of harbor berthing basins and turning area are analyzed,and the similarities and differences between the domestic and overseas standards,codes and guidelines are compared.Based on the discussion of a typical project,some beneficial conclusions are drawn,which may serve as reference for the overseas project design and broadening of the design ideas for the domestic engineering.

Abstract:The rapids shoal is the main navigation-hampering shoal in mountainous rivers,while the criterion of rapids abating is a technical parameter which has an influence on the regulation design of the rapids shoal channel,and it is also one of the most important focuses in the research of rapids.The paper analyzes the convenience and feasibility of a comprehensive index which combines rapids and hillside flow parameters as well as its difficulty of theoretical discrimination in practical using,and further it proposes the simplified basic discriminant.Based on the facts,the paper also points out that there are some preferable discriminants,such as parabola,straight line,broken line,etc.,the precise meaning of which in mathematics is given.And it should be regarded as different parameters of rapids abating in river-crossing area of ascending rapids which uses “expanding the springboard” method.

Abstract:The bed in the edge of soft mattress is easy to be scoured by unfavorable flow.When the scouring depth exceeds the deformation capacity of soft mattress,the edge of it sometimes appears deformation failure.The paper analyzes the influential factors of the deformation failure of soft mattress,which includes the flow conditions,bed composition,as well as the structure and width of soft mattress.The failure mechanism of soft mattress is also studied and corresponding counter measures are proposed.It indicates that a permeable frame of certain density can reduce the turbulent intensity near the bottom boundary flow and the bed scouring in the edge of soft mattress,which can maintain the safety of soft mattress and spur dike.

Abstract:The water conservancy project of Feilaixia located in the middle reaches of Beijiang river.The new second & third-lane locks are arranged parallely with the effective dimensions of 220 m×34 m×4.5 m (length×width×threshold depth),and the maximum design head is 14.44 m,using lock-bottom long-culvert & side-hole water conveyance system and layout pattern of energy dissipation with double open ditches.Carrying out an experimental study on the layout pattern of the conveyance system and hydraulic characteristics through the model test in 1:30 scale,we draw the conclusion that chamber delivery time,water hydraulic parameters,chamber berthing conditions,import and export of layout pattern can meet the specification requirements.It has been optimized to better conditions for the berthing chamber.

Abstract:According to the river basin planning of the Ganjiang river,the Xin’gan navigation electricity hinge will be proposed at about 1.5 km upstream from Sanhu town.It must be predicted that the change tendency of river bed and water levels downstream hub after completion of the project.The 1-D flow and sediment mathematical model are established from Sanhu town to Nanchang for 118 km long reach.The deformation of river bed and the declining water levels are computed by numerical model after completion of the project.The conclusion shows that under the current river status,the river bed will reach a equilibrium state by scouring and deposition for 6～7 hydrological years;the maximum scour depth of the river bed will be 1.76 m and the maximum value of the declining water levels will be 1.56 m after the self-adjustment of river bed about 10 hydrological years.The change of waterway condition downstream of the Xin’gan hub is analyzed.

Abstract:The layout of energy dissipater and the effect of energy dissipation of lock chamber sidewall corridor ditches impact directly the mooring force and berthing safety of vessels in the lock chamber.Using the local model and in the case of the steady flow,we carry out an experimental research on the energy dissipater water-filling process of the single ditch,double ditches and three ditches in the lock chamber sidewall corridor,analyze and compare the residual specific energy,kinetic energy and distribution of flow field of various types of ditches,evaluate comprehensively the energy dissipation characteristics of energy dissipater of each type of ditch,and verify them in the overall model.The results show that comparing three kinds of open ditches,the best arrangement of the effect of energy dissipation is three ditches.Comparing with single ditch,the double ditches are characterized by more energy-dissipation water and more flexible energy dissipater arrangement.The energy dissipation space of double ditches is larger,the distribution of flow field is more homogeneous than the single ditch,and it is better to decrease the acting force of the lock chamber transverse flow to ship than the single ditch.Therefore,the effect of energy dissipation of double ditches is better.

Abstract:Based on Baliwan lock head project on the east route of South-to-North Water Transfer Project，we carry out a centrifugal model test and get the structural deformation and ground reaction force at the end of construction period.According to the scale model of centrifugal test established lock head，we build the finite element analysis model.Using the back analysis method we develop the soil deformation modulus values and conduct the finite element analysis.Comparing the results with those by the centrifugal model test,we get the most reasonable soil index of soil indicators in the model of finite element calculation，to provide a theoretical reference for the engineering design under the same geologic conditions.

Abstract:The tetrahedron-like penetrating frame dam,the cross section of which is trapezoid,is built by piling the tetrahedron-like penetrating frame.Through the dropping test of the tetrahedron-like penetrating frame dam on land and in flume,we study the number of frames in unit volume and the porosity and analyze the construction technology and inspection standard of the frame dam.The study provides not only a quality control range of frame dam construction,but also serves as a basis and reference on the construction and acceptance of tetrahedron-like penetrating frame dam in the inland river.

Abstract:Since the impoundment of the Three Gorges reservoir,water and sediment to the downstream reach has changed,resulting in the process of river transformation on the Changjiang-Guanzhou river and erosion of the bed.Based on the latest prototype observation data of the reach after construction of the Gorges project,we know that the waterway after the Three Gorges reservoir is generally in the scour situation,especially the left branch.This situation exerts a great influence on the waterway shunt of the two branches,and thus further affects the main waterway conditions,and meanwhile influences the entrance channel conditions of the waterway downstream Lujiahe.Based on the above analysis,we predict the waterway variation trend,and think that the currently favorable waterway condition may change worse under the action of natural deterioration.The research result may serve as reference for the determination of the regulation indea and engineering design of this waterway.

Abstract:Currently,the long coast of Bingyinzhou in the middle reach of the Yangtze River has formed scarp and is falling back continuously.In order to prevent bank caving of the low beach and scouring of the beach face,we put forward the concept of ridge protection and analyze the features of its guardian,and clarify the positions need to pay attention to and corresponding guard measures,which are based on the characteristics of the flood plain in Bingyinzhou and the features of revetment bank protection structures.According to the stability analysis and computation of different proposals,we give the recommended scheme for the protection of Bingyinzhou,which may serve as reference for similar protection engineering of flood plain.

Abstract:According to the actual situation of Guihu Hanjiang grand bridge project,and based on the Navigation Standard of Inland Waterway (GB 50139—2004) and relevant research achievements by the Ministry of Transport (No.2003-335-343-42),we demonstrate the influence of the towed alongside,oblique cross,cross current,and turbulent flow on the navigation clearance dimension of Guihu Hanjiangr grand bridge,and determine the navigation clearance dimension at last.It provides reference example and specific computational model for similar designs of crossing channel structure.

Abstract:Aiming at the argument of vacuum transmission in drain board under vacuum preloading,this paper analyzes the concept of vacuum and negative pore water pressure under the theory of fluid mechanics,and points out that the real reason of soft soil drainage and consolidation is the decrease of pore water pressure in the drain board.The total potential of pore water in the key position of drain board is calculated by the theory of fluid mechanics.Then the action mechanism and flow process of pore water pressure is analyzed based on the lowest energy principle.So the changing rules of pore water pressure in the drain board are obtained.The results show that:1) the changing rules of pore water pressure in the drain board relates closely to the ground water level,vacuum degree under membrane and drainage board deformation;2) in the drain board,the simplified distribution pattern of pore water pressure reduction is a broken line,and the line’s turning point is located in the ground water level;3) the pore water pressure reduction changes a lot above the ground water level,and the attenuation rate is 10 kPam.But the pore water pressure reduction remains unchanged below the ground water level;4) the more deformation of drainage board occurs,the more resistance of drainage is.When the drain board breaks,the vacuum load under membrane can not transmit to the deep ground.

Abstract:Based on finite element analysis,we research the active earth pressure and soil arching on the retaining wall under non-limit state.The results show that there is a relative displacement region shaped as trapezoid behind the retaining wall and it increases as the displacements of the retaining wall increases under the non-limit state.The active earth pressure behind the wall presents a convex curve distribution.As increasing of the displacement of the wall,the integrity of active earth pressure increases and the distance from the action point of the integrity of the active earth pressure to the wall heel is about 0.28 to 0.34 times high of the wall.The curve of the soil arching behind the wall under the non-limit state is an exponential function：the base and the curvature decreases with the increase of the wall’s displacement.

Abstract:The liquefaction of sandy layer is an important index of the site and foundation seismic effect.The liquefaction of sandy layer discrimination method based on the standard penetration test and static cone penetration test ,etc.are mainly adopted for the harbor engineering in China.However,the simplified method of seed and the estimation method based on the probability and statistical analysis are adopted in Europe and America,Africa and Southeast Asia.Analyzing a variety of liquefaction discrimination methods,we prove the rationality of the method.According to different kinds of project,we apply it to the seismic effect for the harbor engineering.

Abstract:For the ultra-soft soil by newly-filled silt ,the bearing capacity is limited after treated by the conventional method for the shallow soft soil treatment,and needs to fill powder of 80 to 100 cm thick to serve as the bearing course for the follow-up board plugging construction.Based on Tianjin Nangang Industrial Zone waterway and harbor dredging combined with land reclamation project (B03 road on the west side of reclamation area 3) soft foundation treatment project,we compare 3 schemes for the reinforcement of ultra-soft soil by the experiment and further optimize the schemes,and attain the goal of unnecessary sand filling or less filling.

Abstract:Loading tests in large range condition are not uniformly prescribed in various standards and treatment of experimental data usually runs diseconomy or unsafe.When the range is larger than 30% of the average value or the ratio of maximum and minimum is bigger than 1.3 the calculation for bearing capacity value,we can use methods such as outliers rejecting method or variation coefficient strength reduction method to calculate.Various examples show that the given formula is reasonable and easy to calculate，which can be used for determining the bearing capacity of various kinds of loading tests.

Abstract:The overflow through intentional overloading is the most common construction method adopted in the trailing hopper suction dredger (TSHD).It can improve the loading density of dredger,which will lead to a higher dredging efficiency and lower dredging cost.According to the construction characteristics of the overflow through intentional overloading and the regular pattern of sedimentation movement of the solid particles in the liquid,we analyze the applicability of this method in the waterway dredging projects based on the actual projects.

Abstract:Based on the foundation treatment of the yacht wharf engineering of the relocation project in Dalian east,we propose the reasonable design criteria and construction technology through studying the test area of the project.Studying the gravel pile testing,we put forward the quality examination method for the gravel pile using the caisson ballast testing and heavy dynamic penetration analyze the the piling results of the gravel pile,and summarize the engineering experience and quality inspection standards of the water vibrator which is used in low-intensity saturated clays.

Abstract:Based on an excavated harbor basin engineering,we expound the design of combined steel sheet-pile structure with a load-relieving slab and its key technology.This structural type fully integrates the bending capacity of the front sheet pile wall,1 000 PHC piles and load-relieving slab to resist the horizontal and vertical loads in the form of rigid cap.The novel structure has been successfully used in excavated harbor basins and it provides technical reference for the design of similar projects.