太原理工大学学报2026，Vol.57Issue(5)：897-908,12.DOI:10.16355/j.tyut.1007-9432.20240522
含水率对平遥夯土城墙物理力学性质的影响及其稳定性分析
Influence of Moisture Content on Physical and Mechanical Properties of Rammed Earth Wall in Pingyao Ancient City and Its Stablity Analysis
摘要
Abstract
[Purposes]In response to the changes in the surrounding environment,the moisture content distribution of rammed earth walls varies.To investigate the law of physical and mechanical properties of rammed earth bodies with different moisture contents,the rammed earth bodies of the World Cultural Heritage site of Pingyao Ancient City are selected as the research object.[Methods]Different target moisture content rammed earth bodies were set up,and the compression modulus,co‑hesion,and shear strength of the soil bodies with different moisture contents were tested by using con‑solidation apparatus and shear apparatus.At the same time,the stability coefficient of the walls with different moisture contents was calculated by using the strength reduction method in ABAQUS,and the influence of moisture content in soil bodies on the stability of the walls was discussed.[Results]The findings indicate that when the soil's moisture content w is less than 13.0％,the soil's cohesion c,compression modulus Es,and shear strength τ all exhibit an increasing tendency as the moisture content increases.When the soil has a moisture content of more than 13.0％,the soil's compressibili‑ty increases and its Es decreases.Low-compression soil gradually becomes medium-compression soil as w increases.The soil experiences a drop in c and τ,leading to a decrease in soil stability.With the increase of w,the safety and stability coefficient of the wall shows a gradual downward trend in gener‑al.For the maximum shear stress and equivalent plastic strain of the rammed earth wall with different moisture contents,the maximum shear stress of the outer wall is greater than that of the inner wall,that of the bottom is greater than that of the top,and the plastic strain is concentrated at the bottom of the inner wall.The research results can provide a theoretical basis for the preventive protection and re‑pair soil selection of rammed earth walls and similar rammed earth buildings in Pingyao Ancient City.关键词
夯土体/含水率/物理力学性质/平遥古城/有限元分析Key words
rammed earth body/moisture content/physical and mechanical properties/Pingyao Ancient City/finite element analysis分类
建筑与水利引用本文复制引用
乔敬淇,南东敏,杨星宇,武开浩,石宇辰,韩鹏举,白向灵,何斌..含水率对平遥夯土城墙物理力学性质的影响及其稳定性分析[J].太原理工大学学报,2026,57(5):897-908,12.基金项目
国家自然科学基金(41807256) （41807256）
山西省自然科学基金(202203021211136,20210302123139) （202203021211136,20210302123139）
