考虑相邻工程的某港区总体建设方案

以某港区实际工程为例,在对建设条件梳理分析的基础上进行方案研究。针对复杂的掩护条件,根据周边工程实施进度分阶段确定掩护标准,选择合理的设计波要素。总体建设方案选择投资稍高但建设工期较短的离岸式高桩结构,先施工码头结构后再进行港池疏浚,有效缩短了建设工期。采用Plaxis岩土有限元软件分析港池疏浚对桩基的作用,结果表明考虑港池疏浚产生的土体变形后,桩基弯矩显著增大。本工程提出的分阶段确定掩护标准、码头离岸式布置、吹填形成陆域、先施工码头结构后疏浚港池的总体建设方案,取得了良好的效益。

Overall construction scheme of port area considering adjacent projects

Taking a practical port project for example,we carry out a case study based on the summary and analysis of the construction condition.In view of the complicated shielding condition,we determine the specific shielding standard and select reasonable design wave elements according to the implementation schedule of surrounding works.The overall construction scheme chooses an offshore high-piled structure that requires a relatively high investment but shorter construction period.The wharf structure is firstly built and followed by harbor dredging so as to effectively reduce the construction period.The influence on pile foundations exerted by harbor dredging is analyzed by the Plaxis geotechnical finite element analysis software,and the result shows that the bending moment of the pile foundation increases significantly under consideration of the soil deformation caused by harbor dredging.The overall construction scheme for this project covering the determination of the shielding standard by stages,the deployment of offshore wharf,the filling for land area and the arrangement of constructing wharf structure first and harbor dredging followed has achieved great benefits.