摘要
以国内某市政深基坑支护工程为背景,探讨了钢板桩+钢支撑与灌注桩+大跨度混凝土支撑组合结构在深基坑中应用的可行性,同时利用Midas GTS软件对组合支护结构进行了数值分析,并用现场监测结果对比验证了数值模拟结果变化规律的可靠性。计算分析结果表明:钢板桩+钢支撑与灌注桩+大跨度混凝土支撑组合支护结构均能有效控制基坑变形,满足安全要求,节省工程造价,在当地类似基坑支护工程中可以应用推广;该设计思路对以后类似深基坑支护设计有较好的指导意义。
Based on an actual project of municipal deep foundation pit supporting in China,this paper discusses the application of combined supporting structure of steel sheet pile + steel support and cast-in-situ pile+ large span concrete in deep foundation pit. The composite supporting structure is numerically analyzed by Midas GTS software. The reliability of the numerical simulation results is verified by comparison of the actual monitoring results. The calculation results show that above composite retaining structure can effectively control deformation of the foundation pit. It meets the safety requirement and saves cost. It can be applied in similar local foundation pit projects. This design idea has good guiding significance for similar deep excavation in future.
作者
胡亚东
Hu Yadong(Guangdong Communication Planning&Design Institute Group Co.,Ltd.,Guangzhou 510507,China)
出处
《市政技术》
2022年第1期130-133,165,共5页
Journal of Municipal Technology
关键词
钢板桩
灌注桩
组合支护结构
大跨度混凝土支撑
steel sheet pile
cast-in-situ pile
combined retaining structure
large-span concrete support
作者简介
胡亚东,男,工程师,硕士,主要从事市政工程设计、咨询与研究工作。
