黄土高填方多级边坡可靠度分析  

Reliability analysis of loess multi-stage high fill slopes

作　　者：朱彦鹏[1,2] 房光文 叶帅华[1,2] 郭飞 ZHU Yanpeng;FANG Guangwen;YE Shuaihua;GUO Fei(School of Civil Engineering, Lanzhou University of Technology, Lanzhou 730050, Gansu, China;Western Engineering Research Center of Disaster Mitigation in Civil Engineering of Ministry of Education, Lanzhou University of Technology, Lanzhou 730050, Gansu, China;Gansu Construction Investment Commercial Concrete Co., Ltd., Lanzhou 730070, Gansu, China)

机构地区：[1]兰州理工大学土木工程学院,甘肃兰州730050 [2]兰州理工大学西部土木工程防灾减灾教育部工程研究中心,甘肃兰州730050 [3]甘肃建投商品混凝土有限公司,甘肃兰州730070

出　　处：《地震工程学报》2022年第2期251-257,共7页China Earthquake Engineering Journal

基　　金：教育部长江学者和创新团队支持计划项目(IRT_17R51);国家自然科学基金(52168050,51978321,51768040);兰州理工大学红柳优秀青年人才支持计划;甘肃省建设科技科研项目(JK2015-5)。

摘　　要：针对西北地区采用黄土为填料的高填方多级边坡缺少可靠度分析的现状,以某黄土高填方多级边坡为背景,在考虑黄土填料参数分布不确定性的前提下,建立不同坡率、不同平台宽度分析模型,并采用蒙特卡洛模拟方法对该边坡进行可靠度分析,得到高填方多级边坡的可靠度影响规律。结果表明,坡率在1∶0.5~1∶1.0间、平台宽度在0.5~1.5 m间时,改变坡率大小与平台宽度会对高填方多级边坡的可靠度产生较大影响。研究成果可为以黄土为填料的高填方多级边坡的可靠度研究与应用提供理论依据。There are few studies on the reliability analysis of loess multi-stage high fill slopes in Northwest China.In this paper,a loess multi-stage high fill slope in the study area was taken as the background.Considering the uncertainty of the distribution of loess filling parameters,several analysis models with different slope rates and different platform widths were established.The Monte Carlo simulation method was used to analyze the reliability of the loess multi-stage high fill slope,and the influencing law of the slope reliability was obtained.The research results showed that when the slope rate is between 1∶0.5 and 1∶1.0 and the platform width is between 0.5 m and 1.5 m,the change of the slope rate and platform width will have a great impact on the reliability of the loess multi-stage high fill slope.The research results provide a theoretical basis for the reliability research and application of loess multi-stage high fill slopes.

关 键 词：黄土填料 高填方边坡 可靠度 坡率 平台宽度 

分 类 号：TU476[建筑科学—结构工程]