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地下空间对喀什高台边坡稳定性影响的RFPA强度折减分析
供稿: 王晨;庞峰 时间: 2018-11-26 次数:

作者:王晨;庞峰

作者单位:青岛理工大学艺术学院

摘要:以喀什高台民居边坡为例,使用RFPA-SRM对高台边坡稳定性进行了研究.数值模拟表明高台边坡土体在复杂应力作用下处于单元损伤→裂隙扩张发育→破裂区域渐进贯通→地下空间局部坍塌或边坡滑移失稳的动态变化中.结果表明,当土体单元强度折减为原始强度的70%时,人防地道顶部坍塌失稳和建筑物开裂;当土体单元强度继续折减为原始强度的68%~66%时,边坡内部滑动区域形成贯通,并引起滑动体及其影响范围内的建筑物整体失稳向下滑动.

基金:住房和城乡建设部科技项目(2012-K3-21);教育部规划基金资助项目(13YJA760036);

关键词:地下空间;高台边坡稳定性;滑动区域;RFPA强度折减法;

DOI:10.16186/j.cnki.1673-9787.2014.03.006

分类号:TU43

Abstract:The Kashgar high-terrace slope stability and damage zone induced by the underground spaces are studied with RFPA-SRM to obtain the dynamic failure process of unit damage-fracture extension-fracture area formation-underground space failure and slope sliding failure.The failure of underground space and highterrace folk house would happen when the strength reduction is 30% of initial strength.When the strength reduction is 32% ~ 34% of initial strength, the progressive sliding body might be formed to make the building overall instability.

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