瓜洲泵站工程桩基础处理及结构数值计算分析  

Pile foundation treatment and numerical simulation analysis of Guazhou Pumping Station project

作　　者：张伟 吴昊 夏国春 姚兆仁 刘占午 仇建春 ZHANG Wei;WU Hao;XIA Guochun;YAO Zhaoren;LIU Zhanwu;QIU Jianchun(Jiangsu Water Conservancy Construction Engineering Co.,Ltd.,Yangzhou 225002,China;College of Hydraulic Science and Engineering,Yangzhou University,Yangzhou 225100,China;Hydrodynamic Engineering Laboratory of Jiangsu Province,Yangzhou 225009,China;National Engineering Research Center of Water Resources Efficient Utilization and Engineering Safety,Hohai University,Nanjing 210098,China)

机构地区：[1]江苏省水利建设工程有限公司,江苏扬州225002 [2]扬州大学水利科学与工程学院,江苏扬州225100 [3]江苏省水利动力工程重点实验室,江苏扬州225009 [4]河海大学水资源高效利用与工程安全国家工程研究中心,江苏南京210098

出　　处：《江苏水利》2024年第6期24-29,共6页Jiangsu Water Resources

摘　　要：瓜洲泵站工程面临地基地质条件差、轻粉质和重粉质砂壤土居多、地基渗透性强和易出现液化的问题,不宜作为工程天然地基持力层。对无桩基础的瓜洲泵站进行稳定分析,据此引入含钻孔灌注桩基础的瓜洲泵站工程设计方案,并对其进行了稳定分析,提出了钻孔灌注桩地基处理施工技术的注意事项。最后,利用三维空间有限元法,对校核洪水运行工况下的瓜洲泵站结构进行数值模拟计算,通过分析泵站结构的应力和变形,验证设计方案的有效性。研究成果有望为泵站工程的地基处理及安全性能分析提供价值性参考。The Guazhou Pumping Station project faces problems such as poor geological conditions of the foundation,a majority of light and heavy sandy loam soils,strong permeability of the foundation,and susceptibility to liquefaction,making it unsuitable as a natural foundation bearing layer for the project.A stability analysis was conducted on the Guazhou Pumping Station without pile foundation,and based on this,a design scheme for the Guazhou pumping station project with drilled cast-in-place pile foundation was introduced.The stability analysis was conducted,and precautions for the construction technology of drilled cast-in-place pile foundation treatment were proposed.Finally,using the three-dimensional finite element method,numerical simulation calculations were carried out on the Guazhou pumping station structure under the verification of flood operation conditions.The effectiveness of the design scheme was verified by analyzing the stress and deformation of the pumping station structure.The research results are expected to provide valuable references for the foundation treatment and safety performance analysis of pump station engineering.

关 键 词：泵站 地基处理 桩基础 有限元 位移 应力 

分 类 号：TV675[水利工程—水利水电工程]