摘要
结合杭州某地铁车站基坑开挖时钢支撑轴力的监测数据,对比分析了基坑在开挖过程中轴力的变化规律,分析表明:每道支撑的设置或拆除会对其相邻支撑产生很大的影响,但是对相隔支撑的影响较小;实测支撑总轴力占设计总轴力的比重约为60%～70%,第五道支撑设计偏于保守,第三道支撑设计偏于不安全,基坑角撑部位的设计应充分考虑基坑的空间效应。
The axial forces of strut of foundation pits are studied by analyzing the monitoring data of steel struts for the supporting structure a deep foundation pit of subway station in Hangzhou.The analysis shows that the installation and removal of a strut have strong influence on its adjacent struts but little influence on others.The measured total axial forces of struts is 60%～70% of the total design axial force.The calculated axial forces of the fifth strut are conservative,while those of the third strut are insecure.The space effects should be considered in the calculation of the axial forces of the foundation pit.
出处
《岩土工程学报》
EI
CAS
CSCD
北大核心
2010年第S1期426-429,共4页
Chinese Journal of Geotechnical Engineering
关键词
基坑
空间效应
支撑轴力
foundation pit
space effect
axial force of strut
