Abstract:In order to improve the representativeness of data for the calculation of riding high tides in a long waterway at a tidal estuary, this paper presents the multi-station combined method for the calculation. Based on multi-station simultaneous tidal data, and taking the navigational mode, tidal wave propagation and other factors into account, this method can get a reasonable result of riding high tide level in a tidal estuarine waterway. The calculation based on Yangtze Estuary deepwater channel shows that, at the same tide -riding duration and cumulative relative frequency, the riding high tide level needed for a ship to sail into the estuary is bigger than that at a single station alongside, and esp. significantly bigger than that when the ship moving out. The design of a long navigational channel at a tidal estuary should identify a reasonable tide-riding mode according to the nature and strength of tides at local estuary and their comparison with run-off, the characteristics of ships’navigation such as speed, sailing in/out with/without load, and depths along the channel, i.e. to define a suitable tide-riding length of the channel accordingly.

Abstract:This article analyses quantitatively the comparative advantages that the Yangtze River water transport logistics to other modes of transport in energy conservation, land saving, environmental protection,security, logistics cost, and so on. It is also to depict the effects of the water transport logistics in attracting industry gathering, and adjusting with the coast area and cities. It is also studied that the economic relation of the indexes on direct & indirect economic contributions, employment contribution which the water transport logistics dedicates to the coast area and other industry departments.

Abstract:The project locates at the northwestern Gantgaw Tanng Kyunn island in the western Myanmar.Based on a great amount of hydrological, sediment and landform analytical data and design schemes for the dock and navigation channel, physical model experiment for tidal current, walk navigation pattern ADCP measurement,wave tide and sediment numerical model, etc. are used to calculate the flow and sediment condition in the sea area near the project, flow pattern in front of the dock and the location of the silt-thrown area for the channel excavation. The results shows that the flow is smooth during the flood or ebb tidal processes, mooring conditions can satisfy the demand of ships; the sediment concentration is low and the construction of the dock is feasible. The silt-thrown in areas A, B and C are safe, economical and reasonable, and it has little influence on the navigable channel.

Abstract:Based on the corrosion problems induced by the chloride ingression of marine port engineering,laboratory experiments of electrochemical chloride extraction (ECE) were carried out, and then demonstration project was carried out in Zhanjiang port. This paper focuses mainly on the chosen of electrolyte and the design,installation, commissioning and operation of the ECE system, the reduction of chloride ion and the potential of steel before and after ECE. Moreover, the relationship between the total electricity quantity and residue chloride ion is studied.

Abstract:Standardization and normalization of port decision support system can improve the efficiency of port planning and construction, and the management level as well. Therefore, this study applies popular open source frameworks to port information service system through the techniques of Web GIS, Ajax and data persistence, to solve the key problems such as database management, GIS information services and user experience enhancement. Finally, a four-layer architecture for port information service system is proposed with the frameworks and techniques mentioned.

Abstract:Because of the effect from the amphidromic point of M2 tidal constituent around Chenshan cape and the amphidromic point of K1 tidal constituent in the middle of Bohai bay, Weihai bay is characterized with a complex current field. Especially, the current field in Weihai bay can be changed dramatically while there is strong wind blowing over. A numerical model is built to simulate the effect of E wind and W wind on the current field.Based on the results from the numerical model, this paper comprehensively introduces how the current speed and the current directions change with the strong wind blowing over, serving as a reference for the navigation, sealiving breeding and pollutant discharge in Weihai bay.

Abstract:Till now there isn’t an accurate theoretical method to determine the rotation center of the embedded large-diameter cylinder. Using infinite difference software to simulate the overturning of the cylinder under horizontal loads, we get the rotation center by analysis the model position before and after rotation. Based on the analysis of the change pattern of the rotation center with different parameters and through the comparison with the existed method named Hansen, we can get the conclusion that the new method can perfectly reflect the trend of the development of the rotation center under different parameters, thus it’s much more practical than Hansen.

Abstract:Based on the bi-level, the load transfer mechanism of stiffened piles with long core pile was analyzed. The“cement-soil plug”was formed when a PHC pipe pile was implanted into bi-direction cement mixing pile in a concentric manner. The theory of cavity expansion was adopted for analyzing the disturbance on the side soil, and the radial stresses of pile-soil contact surface before and after the complete occlusion of cement soil plug were calculated. Considering the shear strength, the calculation equation for side friction was reduced then. On the basis of the engineering, side friction forces were calculated by equations in this paper and the code respectively.Comparing with those calculated based on the code, the forces calculated by the equation proposed in this paper coincided better in mucky soils and lacked in the silty clay. Affected by the load and data acquisition mode, forces measured in-situ were less than the calculated ones.

Abstract:According to the 34-year site wave data from Qinhuangdao Ocean Observation Station, we obtained the design wave conditions of the variable return periods. TK-2d wave model and MIKE21 BW wave model were used to simulate the wave transformation near a dockyard. The design wave conditions along the contours near the engineering were obtained from the models. The wave height diagram in the harbor, the wave height near the dock and the wave’s influence on the working days of the dock were discussed between different breakwaters, channels and dock arrangements. In present model, the wave diffraction, wave refraction, wave reflection and bottom friction were taken into consideration for a better dockyard design.

Abstract:The performance, strength, crack resistance, freeze-thaw resistance, chloride ion content,electric flux of concrete mixture of C30 high-performance concrete are tested in four groups with different mix proportions. The effects of the different content mineral admixtures on the mechanical strength and durability of low-strength & high-performance concrete are analyzed. Based on the result of the tests and the analysis above,we draw the conclusion that the durability of low-strength and high-performance concrete is the best when the proportion of the mineral admixture content is between 40% and 50%.

Abstract:The experimental research on soil water characteristics of expansive soil with different dry density is carried out by the pressure plate. The basic characteristics are analyzed on the soil water characteristic curve (SWCC). The effect of dry density is discussed on water retention capacity. The two basic eigenvalues are deduced according to the soil water characteristic curve. The results show that the effect is varied in the regime of SWCC. Dry density has little effect on the boundary effect stage when the matric suction is under the air-entry value. The water retention capacity is enhanced significantly on the transformation stage when matric suction is over the air-entry value. The air-entry value and resident water content are also high and increase as the dry density increases. The mathematic model is advanced to describe the SWCC of expansive soil. Then, the effect of dry density of expansive soil on the parameters of SWCC equation is analyzed. The relationship of dry density, matric suction and degree is described by a function expression.

Abstract:Since the E-channel chart of the Yangtze River has been completed, timely data update after the movement of navigation aids has been the key to make full use of the advantages of the E-channel chart of the Yangtze River. This paper introduces the data update program of the E-channel chart of the Yangtze River,discusses the realization methods of the data update, which provides some references for the software research of the data update.

Abstract:The influence of mix quantity of polypropylene fiber to the key property of concrete was studied based on the mechanical experiment of polypropylene fiber concrete. The test result indicated that both the compressive strength and the splitting tensile strength of polypropylene fiber concrete were reduced with the increase of the mix quantity of the fiber. When the mix quantity increased from 0 to 1.2 kg/m3, the 7 d resistant to compression and the tensile strength of the fiber concrete reduced by 11.4% and the 8.7% respectively comparing with those of the control concrete, the 28 d intensity of the fiber concrete reduced by 12.1% and 3.6% separately,but the anti-impact ability of concrete enhanced by 4.76 times. Moreover, the addition of the polypropylene fiber enabled a higher toughness of concrete, which is crucial to the prevention of deformation and cracks of normal concrete under loads.

Abstract:The confirmation of the design tidal level is an important and basic task in coastal port engineering. For a new port with short-term observed tide data only, the difference-ratio method and correlation analysis are used to calculate the design high/low water level, while the correlation analysis and K-value method to calculate the extreme high/low water level by long-term observed tide level data of the standard port nearby. This paper proposed quantitative indicators for judging the tidal similarity firstly and the method for determining the design tidal levels based on several calculating results for different models. The proposed model has been applied to the general plan of Pikou port area, and the result has provided a reference for the determination of design tidal level of new port areas.

Abstract:The development of the ports and cities in the Seto sea area has a great effect on the economic development of Japan. It is a typical case of harmonized development between the port and the city and is worthy of studying. To explore the relationship of port and the industry, cargo throughput and container throughput are used to represent the port development level. GDP and the number of employees are used to represent the industrial development level. Firstly, grey relational analysis method is used to calculate the correlation between ports and industries, and the grey correlations of each county are compared and the developing strategies of the Seto sea area are summarized. The results can bring an enlightenment to the development of the coastal economic zone of Liaoning province. Then, a comprehensive evaluation model is proposed, with both functionality and balance taken into account. So the main port indicator that has a great influence on the development of industries in the Seto sea area can be determined. It is cargo output. Lastly, results of the proposed model and the usually used models are compared. It shows that the model proposed is more realistic, and it can evaluate the relationship between ports and industries in the Seto sea area more accurately.

Abstract:The back porch ship impact force will be added on the high-piled wharf under the simultaneous operation of the apron mooring and back porch berthing, and the transverse displacement and the pile foundation inner force of wharf structure will be changed as well. According to the mechanical characteristics, the ROBOT numerical simulation is used to analyze the mechanical characteristics and the deformation of the both-sidesmooring-berthing high-piled wharf. The applicability of the actual engineering ROBOT calculation is validated,and according to the load combination by more complete calculation and analysis, it is pointed out that for the both-sides-mooring-berthing high-piled wharf, the added back porch impact force has a great influence on the bending moments and shear of straight piles, and the transverse displacement of the wharf will be lager, so we should pay more attention to the structural design of the high-piled wharf.

Abstract:With the development of harbor construction，prestressed concrete pipe piles are more and more widely used in harbor civil engineering. This paper probes into the structure of prestressed concrete pipe piles,piling technology and quality inspection after construction based on the design and construction experience of port land area building engineering, according to the geologic condition of the construction site, and through analyzing the characteristics of the prestressed concrete pipe piles and the piling mechanism, also referencing related documents and information. Some suggestions on the improvement are put forward to serve as a reference for the design and construction.

Abstract:To analyze the behavior characteristics and trends of port’s collecting and dispatching system,we defined the concept of coordinated development of port’s collecting and dispatching system based on the synergetic and other theories. Taking Guangxi Beibu -gulf port as the research object, we present a system dynamics approach based on the system analysis and cause-and-effect analysis. The proposed SD model comprises 4 sub-modules: port throughout demand, throughout capacity, transport structure, freight structure. The basic simulation and policy simulation are carried out after the validation of the SD model, which can offer a theoretical basis for establishing relevant policies.

Abstract:Combined with the development process and container parameters of Shanghai Waigaoqiao port area, the game model between container terminals among a port area under overload operation is constructed. The equilibrium stevedorage and coalition profit are solved by the backward induction. The results suggest that comparing with the competition game, the container terminal of coalition can charge higher stevedorage, at the same time, the market share of the incomplete coalition container terminal is on the downside, while the equilibrium stevedorage and market share as well as the profit are on the upside. In contrast to the complete coalition, the equilibrium stevedorage and market share as well as profit of the incomplete coalition container terminal are decreasing; the equilibrium stevedorage and profit of the outsider are significantly decreasing, but the market share of it is greatly increasing, i.e., the real winner is the outsider which earns a better payoff without joining the coalition.

Abstract:This paper deals with the determination of wharf surface elevation, handling technology arrangement mode, stackyard drainage design, and the light and lightning protection design based on the design of Shanghai Waigaoqiao port VI ro/ro terminal. It reveals that the ro/ro terminal design has its special features, thus the design shall be carried out according to the real conditions of port areas.

Abstract:This paper expounds the passenger transferring characteristics of international luxurious cruises and requirements of cruise terminal’s process layout. The cruise’s boarding bridge is the key equipment carrying out seamless connection between the cruise and the passenger inspection building. The modernized boarding bridge enables humanized service in boarding and realizes comfortable, safe, efficient and convenient boarding of passengers. The article introduces the technical characteristics and cruise terminal process layout of two typical cruise boarding bridges which have been put into use, so as to provide a reference for the cruise terminal to be constructed.

Abstract:According to the information of terrain, water level, flow velocity and direction after and before impoundment of the Three-Gorges reservoir, we analyze the changing of the flow structure, hydraulic factors by the mathematical model for 2-dimendion flow, and channel condition, we also summarize the sediment regulation of the sharp bend and braided reach, Huanghuacheng reach, and conclude that such reaches can all be confronted with transforming of channel pattern.

Abstract:Zhoushan Putuo District Xiaogan bridge links the Zhoushan island with the Little Gan island, and spans the Shenjiamen west harbor area.Shenjiamen fishing port is famous in our country.It is a comprehensive port for fishing boats’ sheltering, re-supply, aquatic products distribution, and passenger transportation.Shenjiamen west harbor channel is surrounded by Xiaogan island, Mashi island and Zhoushan island.There are many terminals on both coasts, and the ships’composition is more complicated.Based on the analysis of the hydrographic conditions, the navigation condition and port situation of Shenjiamen west harbor area in Xiaogan bridge area, we analyze the site location of Zhoushan Xiaogan bridge to be constructed, and calculate the navigation span from the view of navigation. We also demonstrate on the navigable clearance based on the channel condition in the bridge area.

Abstract:As a typical low-carbon transportation mode, inland navigation needs less land, produces less pollution, consumes less energy but carries more goods. In order to scientifically evaluate green performance of inland navigation, using the method of LCIA to analyse input and output inventories, the paper constructs the green degree evaluation index system of inland navigation, quantifies the indices with fuzzy analytic hierarchy process (F-AHP) , and uses linear weighted sum method to calculate the final comprehensive evaluation. The results show that inland navigation has some green properties, but can’t meet the requirement of China’s lowcarbon society, so the paper puts forward some advanced measures based on the basic attribute and environment attribute.

Abstract:The construction of the lock chamber on the deep soft ground can affect not only the project duration and cost, but also the project quality and later maintenance. This paper expounds in detail the soft ground treatment of the lock chamber, the bottom form of chamber wall and form brace, and the controlling of perpendicularity, etc. It reveals the preconditions of complicated foundation in the construction of the lock chamber: proper organization, strict execution, timely monitoring and survey, as well as scientific analysis and decision.

Abstract:This paper analyses laboratory model tests of double -layer subgrade and investigates the influences of changes in the thickness of soft clay overlying hard soil layer and water-cement ratio on the ultimate bearing capacity of soft soil foundation overlying hard soil layer. It is shown that the increased water-cement ratio has a remarkable impact on the increases in the ultimate bearing capacity, while increases in the thickness do not have obvious effects on the increase of the ultimate bearing capacity of double-layer subgrade. Furthermore, this paper analyses the ultimate bearing capacity of double-layer subgrade, puts forward the amendment formula of the ultimate bearing capacity, and carries out a comparative analysis between the calculated results and the experiment data.

Abstract:Due to the tight construction period, the stacker-reclaimer foundation for the ore storage yard of Luojing port has to sit on the weak ground with a continuous settlement of about 3 meters during the operation period. The adjustable stacker-reclaimer foundation is designed especially for complying with the condition of the large settlement during the operation period, and the check and evaluation criteria for the foundation during the operation period is provided. Regarding the horizontal displacement of the foundation on the weak ground, the reinforcement cushion is recommended to balance the dump load of ore on the storage yard and further eliminate the ground’s horizontal displacement.

Abstract:This paper analyzes the process of drainage and load variation of dredged mud during soft ground treatment by the vacuum preloading, discusses theoretically the variation law of ground’s shear strength along the depth direction after ground treatment under the three conditions: vacuum preloading with no sand cushion;vacuum preloading with sand cushion; laying sand cushion after vacuum preloading with no sand cushion. It is found that the sand cushion plays an important role in the process of soft soil ground treatment with vacuum preloading method.

Abstract:for two different sections (rectangular and inverted trapezoid) of elastic foundation beams with Winkler foundation, we analyze the bending moment coefficient with different affect factors. The results show that the bending moment coefficient decreases with the increase of the foundation counterforce coefficient, increases along with the increase of concrete strength, decreases with the increase of the beam’s length-height ratio, and keep unchanged with the increase of the width-height ratio of the imposed load and beam. Under the same condition, the stress state of the foundation beam with the inverted trapezoid cross-section is superior to that with the rectangular cross-section.

Abstract:Based on the Gibson large -strain consolidation equation, three assumption conditions of simplified equation are verified by the analysis of high pressure consolidation tests of dredged fill. Large-strain consolidation simplied settlement prediction method of double-layered soft clay foundation is proposed under step load, which be applied to the settlement process prediction of double-layered soft clay foundation of dredged fill and marine deposit silt in land reclamation projects. The obtained results verified that: 1) The relationship of void ratio e-effective stress and coefficient of permeability k-(1+e) of dredged fill is linear, and large-strain coefficient of consolidation of dredged fill is approximately constant under different consolidation pressure of 0-25 kPa and 25-200 kPa. 2) Compared with the classical consolidation theory, the consolidation settlement process of doublelayered soft clay foundation obtained by the large-strain consolidation simplified method is more reasonable, which provides a facility and practical settlement prediction method for soft clay foundation.

Abstract:Longitudinal cracks of PHC piles often occur during pile driving. The larger the pile’s diameter and the heavier the hammer is, the greater the probability of the occurrence of the longitudinal cracks will be.Based on the analysis of the pile driving mechanism, we propose to adopt PHC piles plus steel hoop to prevent effectively the longitudinal cracks in pile driving.

Abstract:In port engineering, the problem of cracks in surface of less reinforced concrete breast wall is quite common. The cracks not only influence the visual quality, but also weaken the durability of structures when sea water penetrates into deep cracks and corrodes the internal reinforcement. But there is no uniform standard for cracks’control yet because of the complexity of construction conditions and the natural environment. Based on the construction experience, we analyze all causes of cracks in wharf breast wall, and put forward relative countermeasures. Good effects have been acquired in practice.

Abstract:As one of the key technologies for seamless linking up of rails, the aluminothermic welding technology is characterized by the simple equipment and convenient & efficient operation, so it has been used widely in the railway. However, the technology is rarely used in the rail welding in ports. Combining with the rail welding in the universal dock (phase 2) of Caofeidian port area, this paper introduces the basic principle,construction technology and effect of the aluminothermic welding technology, and proves the feasibility and operability of the technology, which may serve as a reference for the similar construction.

Abstract:The strain tests are carried out by FBG sensing technology for the structure of cylinder caisson on a 300 000 DWT oil harbor. Based on the LabView virtual instrument software development platform, the timeliness health monitoring system is established, to realize the timely monitoring of the stress of the main projects, timely identification of the cumulative damage of the structure, and assessment of the performance, and provide the early warning to the potential hazards and establish appropriate safety warning system, so as to improve the safety and reliability of the harbor. Through the monitoring results of the steel strain, we can learn more about the dynamic response of cylinder caisson structures under complex external environment, and it is of practical significance on research of similar structures.