防灾减灾工程学报2025，Vol.45Issue(6)：1397-1410,14.DOI:10.13409/j.cnki.jdpme.20250430033
基于连续-非连续方法的地震边坡失稳垮塌研究
Research on Instability and Collapse of Seismic Slopes Based on Continuous-discontinuous Method
摘要
Abstract
In southwestern China,intense tectonic activity and frequent earthquakes occur,and slope instability and collapse triggered by earthquakes severely threaten the normal production and daily lives of residents.To more efficiently analyze the patterns of earthquake-induced slope instability and collapse,a continuous-discontinuous seismic slope calculation method was implemented for the first time in the general finite element software ABAQUS.The effectiveness of this method was validated through laboratory physical experiments and numerical tests.The analysis of the overall failure process of the Daguangbao landslide induced by the 2008 Wenchuan earthquake revealed that under 30 sec-onds of strong seismic action,the collapse of the Daguangbao landslide began at the rear edge of the slope top.The sliding surface of the landslide gradually became fully connected.After breaking through the constraints at the slope toe,the entire landslide slid along the sliding surface toward Huangdongzi gully,where it eventually deposited.Therefore,this method can provide a reference and basis for the calculation of earthquake-induced slope collapse.关键词
连续-非连续方法/失稳垮塌/地震作用/边坡/数值模拟Key words
continuous-discontinuous method/instability and collapse/seismic action/slope/numerical simulation分类
天文与地球科学引用本文复制引用
MENG Weiqing,YIN Chao,ZHENG Yongxiang,ZHAO Gaohui,WANG Wei..基于连续-非连续方法的地震边坡失稳垮塌研究[J].防灾减灾工程学报,2025,45(6):1397-1410,14.基金项目
国家自然科学基金(52308511)资助 （52308511）
