基于不同内力分析方法的单支点桩锚支护设计探讨  

Discussion on Design of Single Fulcrum Pile Anchor Support Based on Different Internal Force Analysis Method

作　　者：宋春来 李洪艳 张泽华 SONG Chun-lai;LI Hong-yan;ZHANG Ze-hua(Yichang Urban Construction Investment Holding Group,Yichang 443002,China;China Gezhouba Group NO.2 Engineering Co.,Ltd.,Chengdu 610091,China;College of Civil Engineering and Architecture,China Three Gorges University,Yichang 443002,China)

机构地区：[1]宜昌城市建设投资控股集团,宜昌443002 [2]中国葛洲坝集团第二工程有限公司,成都610091 [3]三峡大学土木与建筑学院,宜昌443002

出　　处：《价值工程》2019年第21期138-141,共4页Value Engineering

摘　　要：阐述了运用极限平衡法进行基坑支护设计时所包含的两种内力计算方法(等值梁法、静力平衡法)的基本计算原理。结合长春市某基坑工程,按照土层参数的分算与合算分别进行内力计算,得出当土层力学性质差异较大时,采用土层分算与合算计算所得的参数相差较大,应选用土层分算法计算以减小误差。基于土层分算进行了支护结构的稳定性分析,得出在稳定性方面,但相较于静力平衡法按等值梁法设计更加稳定安全,可供同类工程参考。This paper expounds the basic calculation principles of two internal force calculation methods(equivalent beam method and static balance method) involved in the design of foundation pit support by limit balance method. In combination with a foundation pit project in Changchun city, the internal forces are calculated according to the soil layer parameters division and calculation, and it is concluded that when the mechanical properties of soil layer are greatly different, the parameters obtained by the soil layer division and calculation are greatly different, so the soil layer division algorithm should be used to reduce the errors. The stability analysis of the support structure is carried out based on the subdivision of soil layer, and it is concluded that compared with the static equilibrium method, the equivalent beam method is more stable and safe, which can be used as a reference for similar projects.

关 键 词：基坑支护 等值梁法 静力平衡法 土层参数 内力分析 

分 类 号：TU458.3[建筑科学—岩土工程]