探矿工程-岩土钻掘工程Issue(3)：53-55,3.
基坑抗隆起稳定安全系数的算法对比分析
Comparative Study on Calculation of Safety Coefficients for Anti-heave Stability
李金锁1
作者信息
- 1. 中铁十八局集团有限公司，天津300222
- 折叠
摘要
Abstract
Abstruct:Heave deformation and fracture are the common instability form of foundation pit, which is difficult to be moni-tored.Analysis on anti-heave stability is mainly for the calculation of safety coefficients.The main computing methods of safety coefficient of anti-heave stability include limit equilibrium, limit analysis and strength reduction.An engineering ex-ample is adopted in this paper, the above-mentioned methods are used to calculate safety coefficients for anti-heave stabili-ty, and the applicability of these 3 methods is comparatively analyzed.The results show that more engineering factors are ignored by traditional limit equilibrium algorithm with too conservative result, which can be modified to improve the applica-bility.The calculation results are more accurate by limit analysis and strength reduction methods, but further study is nee-ded on failure mode of limit analysis and permitted upheaval value of foundation pit stability in critical state by strength re-duction.关键词
基坑隆起/安全系数/极限平衡/极限分析/强度折减Key words
heave of foundation pit/safety coefficient/limit equilibrium/limit analysis/strength reduction分类
建筑与水利引用本文复制引用
李金锁..基坑抗隆起稳定安全系数的算法对比分析[J].探矿工程-岩土钻掘工程,2015,(3):53-55,3.
