地震-降雨耦合作用下多级加筋黄土填方边坡稳定性分析  

Stability analysis of multi-stage reinforced loess fill slope under earthquake-rainfall coupling effect

作　　者：杨晓 何晴光[2] 张虎 柳明亮 郭朋岗 黄思聪 YANG Xiao;HE Qing-guang;zhang hu;LIU Ming-liang;GUO Peng-gang;HUANG Si-cong(Shaanxi Architecture Science Research Institute Co.,Ltd.,710082,Xi'an,China;Lanzhou University of Technology,730050,Lanzhou,China)

机构地区：[1]陕西省建筑科学研究院有限公司,西安710082 [2]兰州理工大学,兰州730050

出　　处：《建筑技术》2024年第21期2612-2617,共6页Architecture Technology

摘　　要：依托延安大学新校区高填方边坡,通过有限元数值模拟,研究了不同降雨类型及降雨强度对边坡稳定性的影响,以及地震作用下边坡动力响应和不同振动强度对雨后地震边坡稳定性的影响。研究结果表明,降雨和地震均对边坡稳定性产生影响,孔隙水压力和加速度峰值变化是主要因素之一。此外,振动强度与边坡变形呈正相关,当振动强度超过一定阈值时,可能导致边坡失稳破坏。Relying on the high fill slope of the new campus of Yan'an University,studied the effects of different rainfall types and rainfall intensities on slope stability,as well as the effects of slope dynamic response and different vibration intensities on the stability of seismic slope after rainfall were studied by finite element numerical simulation.The results show that both rainfall and earthquake have an impact on slope stability,and pore water pressure and acceleration peak changes are one of the main factors.In addition,the vibration intensity is positively correlated with the slope deformation,and when the vibration intensity exceeds a certain threshold,it may lead to slope instability failure.

关 键 词：多级加筋边坡 地震动力响应 降雨入渗 降雨后地震 振动强度 

分 类 号：TU391[建筑科学—结构工程] TG444.73[金属学及工艺—焊接]