深基坑安全系数的空间分布  

SPACE DISTRIBUTION OF SAFETY FACTOR OF FOUNDATION PIT

作　　者：石林珂[1] 贺为民[2] 孙懿斐[1] 胡静秋[1] 

机构地区：[1]华北水利水电学院岩土工程系,郑州450008 [2]中国地质大学(北京),北京100083

出　　处：《岩石力学与工程学报》2004年第22期3896-3899,共4页Chinese Journal of Rock Mechanics and Engineering

基　　金：河南省教育厅科技攻关项目(2003410200)资助课题。

摘　　要：深基坑稳定性分析的传统做法是计算最小安全系数并找出与之相对应的最危险滑动面。这个目的在数学上很容易达到,但是在实际应用中的深度和广度受到了限制。安全系数空间分布的概念,是对传统深基坑稳定分析方法在物理意义上的延伸。安全系数的空间分布图像由一系列潜在滑动面所构成,每一个潜在滑动面对应一个安全系数,实际上,潜在滑动面的空间分布间接地表示了安全系数的空间分布。这样的表示方式可以直观地显示基坑的稳定状态。同时,若需要进行支护,此法还提供了一个需支护区域的空间分布情况。The traditional method of stability analysis on foundation pit is to calculate the minimum safety factor and to find the corresponding slip surface. This is easy in mathematics, but the depth and range in practical application are limited. The concept of space distribution of safety factor is an extension of the traditional analysis method in physics. The space distribution picture of the safety factor forms a series of potential slip surfaces, and every slip surface has one safety factor. In fact, The space distribution of the safety factor is indicated indirectly by the space distribution of the potential slip surfaces. This kind of expression can show the stability state of foundation pit directly, and can indicate whether there is any area which need to reinforce.

关 键 词：土力学 深基坑 稳定性 安全系数 空间分布 

分 类 号：TU473.2[建筑科学—结构工程]