交通荷载下水泥石灰综合稳定土的动强度与沉降特性分析  

ANALYSIS OF DYNAMIC STRENGTH AND SETTLEMENT CHARACTERISTICS OF CEMENT-LIME COMPOSITE STABILIZED SOIL UNDER TRAFFIC LOADINGL

作　　者：赵汉文 冀健伟 董学林 贾季 ZHAO Han-wen;JI Jian-wei;DONG Xue-lin;JIA Ji(The Third Construction Engineering Company LTD.of China Construction Second Engineering Bureau,100070,Beijing,China)

机构地区：[1]中建二局第三建筑工程有限公司,北京100070

出　　处：《建筑技术》2023年第18期2301-2304,共4页Architecture Technology

摘　　要：水泥石灰综合稳定土作为路基中主要承重层,目前对其动力特性研究较少。为深入分析交通载下水泥石灰综合稳定土的动强度特性与稳定性,以通锡高速公路路基填筑工程为研究背景,利用动三轴测量系统对土样进行动力荷载试验,研究不同动应力、围压、频率下土体动强度特性变化规律,并基于试验结果所得动粘聚力Cd及动内摩擦角φd,采用ABAQUS软件对路基沉降进行数值模拟,试验及模拟结果可为相关工程提供重要数据。As the main bearing layer of subgrade,cement lime comprehensive stabilized soil has less research on its dynamic strength characteristics.In order to deeply analyze the dynamic strength characteristics and stability of cement-lime comprehensive stabilized soil under cyclic loading,taking the subgrade filling project of Tongxi expressway as the research background,the cyclic dynamic load test of soil is carried out by dynamic triaxial test system.The influence of different confining pressures and frequencies on the dynamic strength characteristics of soil is studied.Based on the dynamic cohesion Cd and dynamic internal friction angleφd obtained from the test results,ABAQUS is used for numerical simulation of subgrade settlement,and the test and analysis results can provide important data for relevant projects.

关 键 词：路基填筑 水泥石灰综合稳定土 交通荷载 动强度 

分 类 号：TU74[建筑科学—建筑技术科学]