摘要
为研究改良后高液限土路基的路用性能,以山东省某沿河道路扩建工程为研究背景,根据室内试验确定最优石灰掺量,运用Abaqus软件对改良前后高液限土路基的施工沉降与抗震效果进行数值模拟。结果表明:①当石灰掺量为8%时,改良高液限土各项物理性能指标呈现最优的改良效果。②改良后比改良前路基的最大主应力最大减小了9.88%,最终沉降量最大减小了59.82%。③地震作用后,新老路沉降差仅为0.01 m,改良效果显著。研究成果可为石灰改良高液限土施工提供参考。
In order to study the road performance of the improved high liquid limit soil subgrade,taking a riverside road expansion project in Shandong Province as the research background,the optimal lime content was determined according to the indoor test,and the construction settlement and seismic effect of the high liquid limit soil subgrade before and after improvement were simulated by Abaqus software.The results showed that:(1)When the lime content is 8%,the physical properties of the improved high liquid limit soil presents the optimal improvement effect.(2)Before and after improvement,the maximum principal stress decreases by 9.88%,the final settlement decreases by 59.82%.(3)After the seismic action,the settlement difference between the old and new roads is only 0.01m,indicating a significant improvement effect.The research results can provide reference for the construction technology of high liquid limit soil improved by lime.
作者
许海亮
朱万宇
谭安福
高晗钧
杜羽
XU Hailiang;ZHU Wanyu;TAN Anfu;GAO Hanjun;DU Yu(School of Civil Engineering,North China University of Technology,Beijing 100144,China)
出处
《国防交通工程与技术》
2023年第2期32-35,共4页
Traffic Engineering and Technology for National Defence
关键词
石灰改良
高液限土
最大主应力
沉降量
减震效果
路用性能
物理性能指标
lime improvement
high liquid limit soil
maximum principal stress
settlement amount
seismic response reduction
road performance
physical performance index
