摘要
本文归纳整理了国内软土地区深基坑常见的4种圆环形支撑布置形式。并结合规范设计方法及力学理论,总结了6个力学指标,可以较全面的反映了圆环支撑体系的强度、刚度、稳定性。各项指标包括支撑轴力、弯矩、剪力,围檩位移,稳定性及拉杆拉力。文章利用有限元分析工具对比分析了不同圆环支撑布置形式的受力特点及性能差异,并结合工程案例对不同布置形式的适用范围进行了总结。本文较完整的阐述了圆环形支撑基坑内支撑体系的设计分析方法,并对软土地区圆环形支撑基坑的选型给出了实用化建议。
This paper summarizes four common layout forms of circular struts in soft-soil areas. Combined with national design criterion and mechanics theory,six performance indexes are completely summarized. The indexes included axial-force parameter,bending-moment parameter,shear-force parameter,waling-displacement parameter,stability parameter and strut-tension parameter. They can fully reflect strength,rigidity and stability of the strutsystem. Using the finite-element analysis tools,the mechanical characteristics and performance indexes of different layout forms are also compared. Combined with the foundation pit cases,the applications of different layout forms are summarized. The design and analysis methods are completely explained,some design and analysis practical advices are given for its application in soft-soil areas.
出处
《地下空间与工程学报》
CSCD
北大核心
2013年第S1期1694-1700,1716,共8页
Chinese Journal of Underground Space and Engineering
关键词
深基坑
环形支撑
设计分析
foundation pit
circular strut
design analysis
