Advanced Materials Research Vols. 1065-1069

Abstract: The bearing capacity calculation in horizontal and safety assessment methods of high-pile pier slideway while large platform dragged horizontally to move to barge was studied based on the theoretic derivation and numerical simulation method. According to the research, the load effect of 6000ton slideway in the process of large platform dragged horizontally is obtained, the safety of slideway is evaluated, and the safety measures of slideway structure which should be taken during dragging platform are recommended. The results of the calculation and analysis show that the bearing capacity of slideway meet the requirements of design under the horizontal load of 11550kN by using uniform force to calculate, and the displacement is less than the width of the structure gap between two segments. The 6000ton sildeway is safe under horizontal load of 11550kN. These conclusions can provide the basis for the safety state analysis of high-pile pier slideway structure and the optimization of plan to move the large platform to load on barge.

Abstract: The vertical bearing capacity calculation and security evaluation methods of high-pile pier skid-way quay while large offshore platform moving to barge whose deck elevation adjusted by aided jacks are researched by the theoretic analysis and numerical calculation method. Based on the study, the load effects of 6000ton skid-way quay are acquired under the offshore platform weight and jacks load caused in the process of large platform moving to the barge whose deck elevation adjusted by aided jacks, the security of skid-way is assessed, and the security measures of skid-way structure which should be taken during moving platform are proposed. The analysis of simulation results shows that the bearing capacity of skid-way in vertical meets the requirements of design under the jacks load and platform weight by using uniform pressure to compute. The 6000ton skid-way quay is secure while large offshore platform loaded to barge whose deck elevation adjusted by aided jacks. The conclusions above can provide the experience for the security evaluation of high-pile pier skid-way structure and the optimization of procedure to load the large offshore platform on barge whose deck elevation adjusted by aided jacks.

Abstract: For the purpose of foundation and structure stability during the construction of tide embankment, three monitoring projects including embankment settlement monitoring, berm platform settlement monitoring and pore water pressure monitoring are installed. Integrated monitoring data shows that foundation appears oversize instantaneous settlement on account of high construction speed, short loading interval at initial stage. Following with the shaping of embankment, stable monitoring data range, slow change rate and high dissipation speed of pore water pressure come along. Based on actual embankment settlement data, consolidation degree of soil mass is high and foundation stability becomes strong by means of hyperbolic curve.

Abstract: When the wharf structure is completed, the temperature is different with the one at the usage period. The temperature difference will lead to the temperature strain, and create the lateral deformation and internal forces of the piles. Based on the assumption of the free temperature difference of beam-slab-system, the spatial simplified calculation model of the foundation pile and the stiff platform about the temperature stress in all-vertical-piled wharf is first proposed, the related calculation method is also given. The numerical example shows that the accuracy of this simplified method could meet the demand of preliminary design. In order to reduce the pile-top internal forces, the foundation piles should be arranged symmetrically. The pile-top internal forces are in direct proportion to the forth power of the pile diameter, with the increase of the pile diameter in all-vertical-piled wharf, the analysis of the temperature stress must be taken seriously.

Abstract: the paper is based on numerical model to analyze the siltation of the boundless pool, which built on artificial beach of the east side of double happiness island, Zhangzhou. Using the formulas of W.D.Eysink to calculate the siltation of the pool and analyze the influence of siltation while considering the affect of reflow. The result is that the strength of silation of lowland pool is 0.043m/a, highland pool is 0.017m/a, and the total siltation is 122.73m³.

Abstract: Abstract.Bucket foundation breakwater,which is a new port engineering structure, emerged in recent years, its simulation of stability in the use is a hot topic that many scholars have been working on. However, the affecting factors, different means of simulation and complex mechanism of contact between the foundation bucket and foundation soil leads to its associated stability simulation test data relative dispersion ,so it has not come to a united analysis and summary. This article mainly from centrifugal model test, finite element numerical simulation discussed briefly the simulation reserch status for the stability of bucket foundation breakwater respectively. It draws some valuable experience and the direction which is likely to continue to deepen research in the future.

Abstract: Sandbank-lagoons are generally natural harbors for their good defense of wave, deep water near the coast and little source of sediments. Taking Bohe harbor locating on the sandbank-lagoon in South China as the example, water-sediment regime in the harbor block has been studied in this paper. It is shown that wave-induced long-shore current has a significant impact on the sediment movements in the planned harbor block and its back-silting is controlled by SW flow and wave power, and the training dike can trap sediment into the harbor block. And so in the harbor block planned around the west side of Bohe bay mouth not only can shelter the entrance of the lagoon and control wave-induced long-shore current, but also improve environment for back-silting.

Abstract: Summary analysis of the East China Sea storm surge type, the East China Sea storm surge of factors, the calculation model typhoon pressure field were analyzed. Finally, the influence of the East China Sea eight kinds of selected typical typhoon was simulated for different types under the influence of the East China Sea typhoon storm surge were compared.

Abstract: Removed at authors request.

Abstract: In order to evaluate rational buoys layout of the route quantitatively, the method of fuzzy comprehensive evaluation is applied to establish a rational buoys layout evaluation model. According to the 9 main factors that affect rational buoys layout, a quantitative assessment model is established. The AHP is used to determine weighted coefficients of assessment index. In the paper, the assessment for the buoys layout of three routes is carried out.