关于某离岸式高桩码头引桥桩基承载力的讨论

某在建散货码头,引桥采用桩基础,预制混凝土桩沉至设计标高,贯入度仍有100 mm,现场高应变检测发现桩基实测承载力远小于设计承载力。本文通过分析地质钻孔资料、桩基设计承载力计算、桩基终锤贯入度、高应变检测结果和超静孔隙水压力消散过程,对本项目桩基的承载力进行讨论。本文对类似工程的勘察、设计和施工有借鉴意义。

Discussion on Bearing Capacity of Piled Foundation under Bridge Approach of an Offshore Piled Berth

Based on a bulk cargo terminal under construction, the bridge approach is supported on pile foundation,with the precast concrete pile driven to the design elevation, that is, the penetration depth of 100 mm. Field high strain test shows that the measured bearing capacity of the pile foundation is far less than the design parameter.The bearing capacity of the pile foundation in the project is discussed by analyzing geological borehole data, the calculation result of the design bearing capacity of pile, final penetration depth of pile, high strain test results and the dissipation process of excess pore water pressure. The research results can serve as a reference for the investigation, design and construction of similar projects.