不同降雨条件下黄土建筑边坡稳定性研究  

A Study on the stability of loess building slopes under different rainfall conditions

作　　者：周正山 张斌伟 ZHOU Zhengshan;ZHANG Binwei(College of Water Resources and Hydropower Engineering,Gansu Agricultural University,Lanzhou 730070;College of Civil Engineering,Longdong University,Qingyang 745000)

机构地区：[1]甘肃农业大学水利水电工程学院,甘肃兰州730070 [2]陇东学院土木工程学院,甘肃庆阳745000

出　　处：《中国建材科技》2024年第5期66-71,共6页China Building Materials Science & Technology

基　　金：甘肃省庆阳市科技计划项目(QY-STK-2022A-115);甘肃省高等学校创新能力提升项目(2019A-118)。

摘　　要：为了分析研究不同降雨条件下黄土建筑边坡的稳定特征,应用GEO-studio有限元软件建立黄土建筑边坡模型,对考虑建筑荷载作用的黄土边坡进行降雨强度、降雨持续时间两类降雨条件下的稳定特征分析研究。结果表明,降雨强度和降雨持续时间对考虑建筑荷载作用的黄土边坡有显著影响,土体降雨入渗量显著增加,同一位置处的孔隙水压力逐渐增大,土体强度逐渐减弱;随着降雨强度的逐渐增大或降雨持续时间的延长,考虑建筑荷载作用的黄土边坡稳定系数发生相应的减小,其边坡稳定性能相应减弱。In order to analyze and study the stability characteristics of loess slopes considering building loads under different rainfall conditions,this paper applies GEO-studio finite element software to establish a loess building slope model,and analyzes the stability characteristics of loess slopes under two types of rainfall conditions,namely rainfall intensity and rainfall duration,considering the effect of building loads.The results show that the intensity and duration of rainfall have a significant impact on the loess slope considering the effect of building loads.The infiltration amount of soil rainfall significantly increases,the pore water pressure at the same location gradually increases,and the soil strength gradually weakens.As the intensity of rainfall gradually increases or the duration of rainfall prolongs,the stability coefficient of loess slopes considering building loads decreases accordingly,and the stability performance of slopes also gradually weakens.

关 键 词：黄土建筑边坡 降雨强度 降雨持续时间 稳定性 

分 类 号：P642[天文地球—工程地质学] TU444[天文地球—地质矿产勘探]