兼作永久结构的基坑支护结构设计

Design of Foundation Pit Supporting Structure as Permanent Structure

传统港口工程领域深基坑支护系统都按照临时结构设计,功能局限于为地下主体结构提供干施工环境。为兼顾长期使用功能,文章以某工程卸车系统的地下基础为研究对象,采用三维三工位整体建模计算模式,准确计算不同刚度构件之间的弯矩重分配现象,同时针对使用期地下水位较高的情况,给出了相应的防渗设计方案。研究成果对类似的环保提升项目及其他永久性地下工程有借鉴意义。

The deep foundation pit support system in the traditional port engineering field is designed as the temporary structure, and the function is limited to providing a dry construction environment for the underground main structure. In order to take into account the long-term use function, this paper takes the underground foundation of an engineering unloading system as the research object, and uses the 3D three-station overall modeling calculation mode to accurately calculate the bending moment redistribution phenomenon between components with different stiffness. At the same time, in view of the high groundwater level during the service period, the corresponding anti-seepage design scheme is given. The research results can be used for reference in similar environmental improvement projects and other permanent underground projects.