Abstract:According to the feature of the project and the sea area, by TK-2D software and with irregular triangular grid, an integral mathematical model and a local refined one near project area of tidal current and sediment in Lingdingyang bay are set up. Verification and validation are carried out fully against measured data and numerical simulations of tidal current and suspended sediment field are made. The features of the tidal current field and the suspended sediment field of the Lingdingyang bay area are analyzed and the basis is established to demonstrate the effect of constructing Hongkong-Zhuhai-Mocao bridge on the sea area.

Abstract:To investigate the instability of super-long pile under lateral dynamic load, the double cusps catastrophe model to analysis the dynamic stability of super-long pile is established by catastrophe theory. The mechanism of stability of super-long pile under lateral simple harmonic load is analyzed and the coordinates of two cusps is derived. The effects of nonlinear coefficient 滋and frequency ratio on amplitude of super-long pile are analyzed. The analysis of the parameters shows that: when nonlinear coefficient between two cusps,continuous change of 浊can arise abrupt change of amplitude, that is, produce jumping, which is the mechanism of lateral instability of super-long pile.

Abstract:The rock of the dam is supposed to be dual-porosity medium and pore pressure in fracture and micro-pores are coupled with the stress in dam. The evolution of the permeability is studied by analyzing the hydraulic pressure and the deformation of the rock. Mathematical models are built to quantify the fluid flow, the deformation of rock skeleton and the net change of permeability. The relations between the pore pressure and permeability (porosity)are also been analyzed and they offer new ideas to solve dam stability problems in engineering.

Abstract:Based on the limit equilibrium method and the reliability theory, the probability distribution model of safety factors is constructed under consideration of the variability of controlling factors for slope stability. According to the practical engineering characteristics, comparing random safety factors with the critical safety factor to build the security region and failure region, and multiplying the average value of safety factors located in the security region by the slope reliability, we obtained the effective safety factor based on the random dual index. We also achieved the changing characteristics of the mean safety factor, the average value of safety factors, the reliability safety factor and the effective safety factor in different variability of slope stability’s controlling factors by comparison of examples. The example shows that the new randomized evaluation index of slope stability proposed in this paper associates the macroscopic characteristics phenomena of slopes with quantitative analysis, and thus provides a reference for similar slope projects.

Abstract:The main piers of Xiazhang sea-crossing bridge are constructed by steel sheet pile cofferdam.This article introduces the construction technology of the main pier and expounds the design and calculation of the steel sheet pile and supporting in detail from three control conditions of the construction process. The three factors of The foundation pit stability is checked based on the burst from pit, the minimum depth in soil and pit heave-resistant stability safety factor.

Abstract:To match the requirements of managing achievements of electronic waterway maps for surveying center of the Yangtze River waterway, this paper analyzes properties in material management. Based on this, the author put forwards an approach to the design of the electronic waterway maps management system, and describes it from the system’s logical structure, functional structure and data structure respectively, which verifies the reasonability of the system design. This system has achieved good results and satisfies the demand from the survey centre to the waterway map’s management.

Abstract:This paper analyzes the economic development and security trends in China according to the specific circumstances of the Zhejiang MSA precinct, points out the problems in traditional means on maritime supervision and makes an in -depth analysis on them, proposes the stability, functionality,performance and scalability goals of building new maritime dynamic supervision means, and describes the key technologies for these goals, such as SOA architecture and adapter mode, framework plug-ins, distributed system and spatial index. Finally, a prospect to the future of maritime dynamic supervision system is made and a complete feasible technical solution for the construction of maritime dynamic supervision system is provided.

Abstract:The paper expounds the necessity of adopting the software P3E/C in the Marine Protection Works of Pakistan Deepwater Container Port, and illustrates the functions and characteristics of it. Based on the breakwater engineering, it summarizes the preparation work for the application of software P3E/C in engineering,and expounds the application of P3E/C about progress control, cost control, quality control and HSE control. The application of P3E/C will be helpful for the establishment of the project management system which is characterized by informatization, professionalization and standardization.

Abstract:Comb-type breakwater also as pier structures is the expanded application of the comb-type concepts, of which the flange slab is an important composition. Linear elastic analysis and reinforcement design are conducted according to physical model tests and by FEM. Based on this, nonlinear analysis and implementations are conducted, which provides a reference for engineering applications.

Abstract:The design feature of Yichang vessel diesel engine plant self-used heavy cargo wharf is to transform part of the bridge technique to the gravity wharf design. One feature is to solve the strength and deflection problems caused by the over load on the suspension beam. The main beam adopts the large-span bridge design concept, choose the self-anchored cable-stayed cantilever beam design plan, reduce the self-weight of the steel box beam, and also reduce the construction difficulty. The other feature is that two main piers in the river adopt the large-span bridge pier design concept, adopt the large-diameter bored cast in-situ pile group foundation to help the main pier bear the torsion and ship breasting force transmitted from the main beam.The design of this wharf may serve as a reference for the relevant project design in combining the bridge technology.

Abstract:The stackyard is one of the most important parts of bulk cargo wharf, which stacks goods according to customers and the nature of goods. But there are usually many kinds of goods and the size and quantity of piles are changing constantly. This paper puts forward a yard grid modeling approach in order to solve the yard modeling problems of the coal transfer yard. Besides, this paper builds a specific simulation model of one actual coal transfer terminal, the result of which provides a reference and recommendation to the planning and design of coal terminals.

Abstract:It is a difficult issue for the Chinese company to enhance the bidding competence in international tender projects through reasonable ptimization based on the original design and practical situation. This paper provides an overall instruction and analysis of the optimization of bidding option for the re-development of Bullnose port from the layout plan, handling technology and hydraulic structures, which may serve as a reference for the technicians.

Abstract:Applying the finite element analysis software ADINA, we study the stress distribution and deformation trend of the cell rubber fender’s board. Through the numerical simulation, we obtained the effective stress cloud charts and deformation figures under three different conditions. Comparing the numerical simulation result with that by the traditional calculation method, we provide a reliable reference for the structural design and optimization of the cell rubber fender’s board.

Abstract:Caofeidian universal terminal phase II engineering adopts the caisson gravity structure, and the rubble bed construction employs hierarchical compaction and blasting ramming, which were applied for the first time in Caofeidian quays. Comprehensive observations of settlement and displacement at various stages are executed in the construction process. The analysis of the data adopted may serve as a reference for similar projects.

Abstract:The life cycle design in wharf project is very important, and it is one of the basic work for the theoretical research on the life cycle design to monitor the safety state in operation of existed works. In a crude oil terminal project of Dalian, according to the structure stress distribution, we laid the fiber bragg grating (FBG) monitoring system at important positions to observe timely the structural strain in the construction process of the main structure of concrete. It is of great significance for the validation and optimization of current design theory, building of the life cycle safety design theory, and establishment of the early warning system for the wharf structure.

Abstract:Manyusha shoal head protection engineering is 2.2 km long and 0.58 km wide on the straight reach of Yangtze estuary, which is simulated with narrowed complete beach protection and sides’local beach protection, and through which the scour depth and position of beach protection engineering under different flow conditions are obtained. The influence of ballast at the edges of the protection works and ballast spacing on scour is studied. The ballast at the edge of protection engineering which should be widened and the key protection parts are proposed, so as to provide a reference for the design and related research.

Abstract:Due to the function of submerged dikes, part of water’s kinetic energy inverts to potential energy, which leads to backwater. The backwater height is hand in glove with the ratio of block-off area under different conditions, such as coefficient of roughness, bottom slope, profile shape and others. Combining the theoretical analysis with the flume experiment, we analyzed the backwater mechanism of submerged dike, and did the experiments on the affect of different bottom slopes, discharges, dams with various heights and dam structures on water level increasing and flow pattern, with the empirical relationship among water level increased, coefficient of local resistance, maximal flow velocity on top of dam and block off area established, and the correction factor of effective block off area for the natural river introduced. Based on the comparison between the calculated results and natural measured data, we verified the reasonableness of the empirical relation.

Abstract:The measurement error of dual-frequency echosounder and its influence on navigable depth survey during period of fluid mud is discussed based on the field measured data obtained by Odem Echotrac MKIII echosounder and Stema Densitune meter. The results are as follows: 1) High-frequency echosounder record may include part of the fluid mud layer and low-frequency echosounder record equivalent to the consolidated bed under the situation of initial stage fluid mud. 2) High-frequency echosounder record equivalent to the upper limit of the fluid mud and low-frequency echosounder record may locate in the fluid mud layer which is higher than the consolidated bed under the situation of typical fluid mud. 3) High-frequency echosounder record equivalent to the upper limit of the fluid mud and low-frequency echosounder record mostly locate at the fluid mud density mutation which is nearest the upper limit of the fluid mud under the situation of consolidating stage fluid mud. 4)Low-frequency echosounder record is no larger than the navigable depth while fluid mud exists in the navigation channel under the situation of consolidating stage fluid mud or sometimes existence of typical fluid mud, which may waste part of the real navigable depth.

Abstract:The commissioned deep water berths near the entrance of Tianjin Port have been in the alternation of siltation and dredging since their coming into use in November, 2008. The monthly mean back silting intensity in front of the docks is 1耀1.5 m, which is far more than the theoretical intensity. This paper analyzes the reasons for heavy siltation near oil docks and in harbor based on the sediment source of Tianjin Port,the normal siltation, the recent depth contrast, the dredging project and so on, which is mainly caused by dredging project. And the standpoint that siltation can be decreased by enlarging area of deep water berths and increasing partial channel depth is put forward based on that working with suction dredger in the channel has the largest impact and the prediction that the normal annual average siltation thickness in smaller than 0.7 m.

Abstract:Yujiang river is an important part of the Xijiang river golden waterway in Guangxi, and the shiplock of Laokou shipping hub is very important. The designed water head of the lock is 14.5 m, and the filling time is required to be not more than 10 min. According to emptying water system design specifications and the characteristics of this project, we choose a more compact structural arrangement as the water filling & emptying system for the lock wall’s holes. Based on the data of similar locks home and abroad, and through calculation and optimization of hydraulic model test, we determine the overall layout and key dimensions of all parts. Model test results show that the hydraulic characteristics of water filling & emptying system meet the requirement of the code, and has achieved the desired objectives.

Abstract:In order to serve better the construction of Shanghai shipping centre, and form a comprehensive navigation aid system which adapts to the national economy and the development of navigation and sciencetechnology,so as to establish an aquatic “expressway ”which is of high quality and with the characteristics of Shanghai, we analyze the necessity of the optimization of navigation marks in this region proceeding from the actual situation of the existed navigation marks including the irrationality, limitation and insufficiency. With the illustrations of the current situation of navigation marks’arrangement, we propose the ideas on the optimization from such angles as the reasonable layout, equipment modernization, service information and needs hierarchy, to serve as a reference for related departments.

Abstract:The north channel is an important part of the Yangtze estuary waterway, and the focus in the future as well. The north channel was less stable historically, but during the past 10 years, with the implementation of the Yangtze estuary waterway regulation project, New Liuhe bar beach protection project, and Qingcao bar reservoir project, the boundary condition of the north channel turned stable, and the regime stability was enhanced.Based on the regime analysis, we propose the technical scheme for the channel regulation, including Baozhen bar beach protection scheme and double leading dikes plus a spur dike. The mathematic model result shows that the regulation effect is satisfactory. The planned objective for the waterway can be realized with certain dredging measures. The prospect for the development of the north channel is also given.

Abstract:One kilometer of the slope of Tongyu river is selected as the experimental field. Five ecological restoration schemes are applied to the slope protection. The effects of the five schemes show that it is profitable and successful to transplant phragmites australis, zizania latifolia, salix integra linn on the slope of Tongyu river,and the lateral suitable protection is necessary and effective. Another effect of transplanting is that it leads to the immigration of a few local species of vegetation, and thus forms a secondary community with a high cover degree.All the schemes have effects on slowing down the collapsing rate of the slope and Scheme 3 (transplanting +fence + refilling soil) is the best.

Abstract:This paper makes clear the position of informatization and logistics development of inland water navigation from the aspects of inland water navigation, modern logistics and informatization. It takes infrastructure, development direction, extent of application and talents as key points and gives details on the existing problems in logistics informatization development of current inland water navigation. It also elaborates on the main trends of the logistics informatization development of inland water navigation in the future and main requirements of the informatization construction. Based on the above analysis, this paper proposes feasible measures and requirements for the logistics informatization construction of domestic inland water navigation.

Abstract:According to the soil parameters from the survey report and the structural construction drawings of a high-pile pier in Guangzhou, this paper establishes a three-dimensional finite element model of the highpile pier, including the platform, piles, and soil. The surface-to-surface contact model is used on the pile-soil interface, and it allows separation and slip on the interface. The normal pressure and friction from the soil to the piles are reflected by the contact stress. This paper analyzes and figures out the stress fields and displacement fields of the high-pile pier, as well as the axial force diagram and moment curve of single pile, under various load combinations. Further, this paper compares the finite element method results with the traditional inserting point method results,taking Fenghai high-pile pier computing program for example. The differences of the axial force diagram and moment curve of single pile of both methods are found out and analyzed. Specifically, the impacts of the pile foundation soil on the structure are analyzed. Meanwhile, this paper finds out the pile which has the maximum internal force and the position where the extremum bending moment and axis force appears in a single pile, and provides some modifications and supplements for the results of the traditional inserting point method, which may provide references for structural design of high-pile pier.

Abstract:It is shown from the analysis results of water depth, shallow seismic section, side scan sonar and bottom sample data that the Kuihua island structure of Liaodong bay has advantageous natural geologic conditions and complex marine engineering geologic environmental characteristics. Although the submarine topography is simple, the sediments is saturated modern marine and terrestrial sediments with characteristics of high moisture content, high liquefaction index, low carrying capacity , etc., and there are many hazard factors including submarine deep scour channel, buried ancient river course, shallow gas formation, etc., which will constitute direct or potential hazards to the marine structures. So, much attention shall be paid to these hazard factors and sedimental characteristics.

Abstract:In vacuum-preloading engineering in silt foundations in Lianyungang, we optimized the plan of vacuum preloading according to the characteristics of soft ground. With an in -depth analysis of matters of attention during construction, we determined the main causes for the vacuum degree, i.e. difficult construction due to the characteristics of silt, lack of ensuring the vacuum degree of 80kPa, inaccurate calculation of settlement quantity and vacuum time, ineffective construction management, unqualified construction personnel and materials, etc., based on which, we propose the guarantee measures.

Abstract:Due to the loads of wind, wave, current, ice and so on, the bucket foundation platform with self-construction should have sufficient supporting stability on ocean bottom for the safety operations to the platform. According to the research object and the environment parameters, it is determined that the structure type of the self-construction bucket foundation platform that has the operation ability in 17 m of water. The calculation methods are discussed, including the anti-sliding stability, anti-overturning stability and vertical stability. The calculation results show that the platform has sufficient supporting stability and is safety when sitting on ocean bottom.

Abstract:By in-door model experiment of double-layer soil foundation, the bearing capacity of doublelayer foundation was studied with upper hard pans of variable thickness and strength, and the digital photograph of deformation field of the double -layer foundation was taken for analysis. The analysis of p -s curve of pressuring-loading and sedimentation indicates the limit enduring capacity of double-layer foundation increase with the increase of upper hard pan thickness and strength, while the corresponding vertical displacement decrease as the upper hard pan thickness and strength increasing under limit enduring condition. The upper pan with water-cement ratio and thickness respectively as 10% and 30 mm shows different capacity performances with that of water-cement ratio and thickness respectively as 20% and 60mm, with the limit enduring capacity of latter is 3.01 times that of former, and the corresponding sedimentation is 0.11 times that of former under limit enduring foundation. By the technique of DPDM (digital photogrammetry for deformation measurement) the digital photographic analysis of double -layer foundation deformation field was conducted, the results of grid-diagram analysis shows the initial deformation occurred to the lower soft clay, and the deformation zone in grid-diagram stretched gradually upwards to hard pan, downwards to soft clay and stretch horizontally with the increase of loading. The breakdown mode of double-layer foundation is the comprehensive breakdown mode featured by cone-shaped block shear of upper hard pan and punching shear of lower soft clay. The optimization and designing of upper hard pan strength and thickness is of significance in improving foundation reinforcement.

Abstract:In a soft ground treatment project in Lianyungang, vacuum preloading is applied for strengthening the thick foundation which is mainly silt. The result appears very well and the bearing capacity of surface silt layer increase to over 70 kPa. This paper introduces the technology design, main construction technique and construction control. The effect of foundation treatment is ensured by the construction monitoring and test after completion. It is shown that the vacuum preloading method has many advantages for reinforcing silt foundation, such as good strengthening effect, short construction period, safe construction, and remarkable economic benefit, etc. Thus this method is worthy of popularizing in the coastal area of Lianyungang.

Abstract:Taking Fuzhou Kemen port bulk cargo logistics centre as an example, this paper analyzes the slope reinforcement effect of cement deep mixing method under various layouts, and chooses an economical and reasonable layout scheme, which meets the design requirements and may serve as a reference for the design of similar projects.

Abstract:Pile deflection and great inclination often occur due to obstruction or hard pile sinking during pile penetration into the design depth. In such situation, the pile should be pulled out and then driving again.Therefore, whether the hammer meets the need of pile extracting should be taken into account during hammer selection. Based on the analysis of the interaction between pile and soil during pile pulling, and combining the renovation engineering of berths No.1 to No.4 of the old port area of Basuo port, we select pile pulling equipments, and further analyze the relationships among the pile pulling, soil property and pile length.

Abstract:As a new anti-erosion structure, Reynolds mat often faces the underwater construction while it is used in the channel bank protection, bottom protection and surface protection of the dam and other projects.This paper summarizes the underwater construction methods of Reynolds mat and discusses the feasibility and effect of the underwater construction by the trailing method for Reynolds mat taking the waterway regulation training works of Zhoutian river section in the middle reaches of the Yangtze River as a study case. It may serve as a reference for the engineering design and construction.

Abstract:A berth adopts the beam-slab high-pile structure with a sheeting pile front wall of BOX pile and AZ pile which are rare in China. This article, with a main line of BOX Pile and AZ pile injection technology and under the condition of a lack of corresponding advanced technology in construction, through an experimental comparison of the pile making (welding technology), shipment (the setting of lifting points), and driving technology,proposes relevant technical measures, and summarizes the quality control measures. By this, we cut down the construction cost, speed up the construction, and guarantee the engineering quality.

Abstract:During the construction of gravity wharf, caisson may sink or slip into the water due to the miss operation or other uncontrollable factors, which will affect the smooth implementation of engineering and bring a huge loss. In practice, by patching the caisson with the prefabricated steel cover plate and pumping, the caisson floated off the water surface under the buoyance and the problem was solved. This paper gives a detailed description of the refloating construction, and summarizes the methods, experience and matters of attention when dealing with similar problems.

Abstract:The potential of market development for marine works is very huge in Latin America, but due to cultural and political system differences, the market is difficult to develop sufficiently. The paper discusses the current situation of the infrastructure in Latin America, and then it summarizes the marketing characteristics of the marine works in this area and gives some advice, in accordance with the experience in practical works. As the economic and trade cooperation develops deeply between Latin America and China, there will be a broader cooperation in the field of marine works between both parties in the future.