地震作用下的干法赤泥堆场稳定性分析  

Stability analysis of dry red mud stack under earthquake

作　　者：卢玉林 何金泽[1,2] 陈晓冉 王丽 林玮 LU Yulin;HE Jinze;CHEN Xiaoran;WANG Li;LIN Wei(School of Civil Engineering,Institute of Disaster Prevention,101601 Beijing,China;Key Laboratory of Building Collapse Mechanism and Disaster Prevention,China Earthquake Administration,101601 Beijing,China;School of Geological Engineering,Institute of Disaster Prevention,101601 Beijing,China)

机构地区：[1]防灾科技学院土木工程学院,北京101601 [2]中国地震局建筑物破坏机理与防御重点实验室,北京101601 [3]防灾科技学院地质工程学院,北京101601

出　　处：《应用力学学报》2024年第3期651-658,共8页Chinese Journal of Applied Mechanics

基　　金：河北省自然科学基金资助项目(No.E2021512002);廊坊市科学技术研究与发展计划资助项目(No.2021011065)。

摘　　要：地震是影响赤泥堆体场稳定性的重要因素之一。采用有限元强度折减法和规范指导方法对龙塔崖沟干法赤泥堆场进行了静力稳定性分析,确定了滑动面的位置和形状,计算了静力条件下的安全系数。以拟静力法不同烈度工况下的堆积体安全系数为标定值,分析了两条实测地震波作用下的堆积体位移、加速度以及动力安全系数的变化规律,计算结果满足规范设定的阈值,可确定堆积体是稳定的。通过与不同方法、不同规范的评价要求对比,判定有限元强度折减法可作为稳定性分析的评价标尺。Earthquake is one important factors which affect the stability of red mud yard.According to the current codes and the finite element strength reduction method,the static stability of Longtayagou red mud yard is analyzed.The position and shape of slip surface,and the safety factor is determined.Based on the safety factor of pseudo static method with different seismic intensity,the displacement,acceleration and dynamic safety factor of the red mud yard under two measured seismic waves are analyzed.The calculation results meet the specification requirements,and it can be determined to be stable.By comparing with the evaluation requirements of different methods and different specifications,the calculation results of the finite element strength reduction method can be judged as the evaluation criterion of stability analysis.

关 键 词：赤泥堆场 干法 地震 稳定性 

分 类 号：TU457[建筑科学—岩土工程]