考虑基坑位移及支护变形影响的土压力计算方法  

Dynamic Supporting Design of Foundation Pit Considering Deformation Effect

作　　者：杨永新[1] 李佳骏[1] 杨旭光[1] 陈菲[1] 

机构地区：[1]内蒙古科技大学,包头014010

出　　处：《科学技术与工程》2016年第14期276-279,共4页Science Technology and Engineering

摘　　要：基坑支护设计中,设计人员面临的最大问题就是土压力的计算。不同的设计规范之间对于土压力的计算有较大的差异,造成设计结构不够准确、统一。而且,由于土压力受很多因素的影响其大小并不是一成不变的,对基坑支护的安全形成重大的隐患。针对土钉支护的基坑,考虑了基坑开挖过程中的基坑位移及土钉支护结构的变形量对土压力造成的影响,重新定义考虑基坑水平位移及支护结构变形的土压力的计算及分布形式,并结合了实际的工程验证了其在工程上的适用性。Foundation pit design, designers are facing the biggest problem is that the earth pressure calculation, between different design codes for the calculation of earth pressure have great differences caused by structural design is not accurate enough, unified. Moreover, because the earth pressure is influenced by many factors, its size is not static, and it is a great hidden danger to the safety of foundation pit support. The excavation of soil nailing for, con-sidering the effect on the earth pressure caused by the excavation of foundation pit in the process of displacement of excavation and soil nail support retaining structure deformation, redefined by considering the horizontal displace-ment of foundation pit and deformation of support structure of earth pressure calculation and distribution form and combined with the practical engineering to verify its applicability in engineering.

关 键 词：基坑位移 支护变形 土压力分布 

分 类 号：TU433[建筑科学—岩土工程]