摘要
合理的基坑支护体系的设计是基坑工程施工的重要保证。本文分析了压顶圈梁和支撑支护结构受力、变形的作用机理。在考虑变形的土压力计算模型基础上,将压顶圈梁视为一横向布置的弹性梁,提出了考虑压顶圈梁和支撑作用的整体计算方法。对典型算例的计算,得出桩体变形规律和支撑刚度及布置方式的影响。对基坑支护结构的设计和施工具有积极的指导作用。
Logical design of braced system is the key issue in the construction of excavation. The influenced mechanisms of top beam and brace on the retaining structures are analyzed respectively in this paper. A finite element program considering the influence of deformation on soil pressure, top beam and brace on retaining structures beam is designed. Ring beam is regarded as a horizontal beam, then an approach that can consider the integrated effects of top beam and brace is presented. The computed results by typical cases show the distribution of later deformation at pile top and the effect of braced system. This should be a good reference for the design and construction of braced system in excavation engineering.
出处
《工程勘察》
CSCD
北大核心
2009年第3期27-30,共4页
Geotechnical Investigation & Surveying
关键词
土压力
基坑
支护系统
变形
soil pressure
excavation
braced system
deformation
