检索规则说明:AND代表“并且”;OR代表“或者”;NOT代表“不包含”;(注意必须大写,运算符两边需空一格)
检 索 范 例 :范例一: (K=图书馆学 OR K=情报学) AND A=范并思 范例二:J=计算机应用与软件 AND (U=C++ OR U=Basic) NOT M=Visual
作 者:张军 张育齐 刘洋洋 李昌辉 ZHANG Jun;ZHANG Yuqi;LIU Yangyang;LI Changhui(School of Civil Engineering,Changsha University of Science and Technology,Changsha 410114,Hunan,China)
机构地区:[1]长沙理工大学土木工程学院,湖南长沙410114
出 处:《水力发电》2024年第4期26-31,共6页Water Power
基 金:国家自然科学基金资助项目(51878074)。
摘 要:为研究圆形基坑开挖过程中带接缝时圆形地连墙的内力以及变形特征,考虑接缝数量、墙体直径、有无内衬等工况,通过室内模型试验,采用ABAQUS建立三维数值模型,对模型试验中圆形基坑分步开挖时地连墙的受力特点进行了模拟分析。结果表明,存在接缝时,圆形地连墙仍具有空间拱效应,产生的环向压应力明显大于竖向应力;墙体侧向位移值很小,墙后土体沉降值较小,环向应力与环向位移变化规律基本一致,呈现中间大两头小的分布形式;墙体直径对地连墙的空间拱效应影响最大,接缝数量次之,内衬影响最小。In order to investigate the internal forces and deformation characteristics of the circular diaphragm wall during the excavation of a circular foundation pit,indoor model testes are carried out considering various factors such as joints,wall diameter and lining,and a three-dimensional numerical model is created using ABAQUS to simulate and analyze the stress characteristics of the circular diaphragm wall during the step excavation of foundation pit.The results show that,(a)the circular diaphragm wall still exhibits the"Space arch effect"even when there are joints,and the circumferential compressive stress is significantly higher than the vertical stress;(b)the lateral displacement of the wall is small and the settlement of the soil behind the wall is also minimal,and the changes in circumferential stress and circumferential displacement follow a similar pattern with a larger distribution form in the middle and a smaller distribution at the two ends;and(c)the diameter of the wall has the greatest influence on the arch effect of the ground diaphragm wall,followed by the number of joints,while the inner lining has the least influence.
正在载入数据...
正在载入数据...
正在载入数据...
正在载入数据...
正在载入数据...
正在载入数据...
正在载入数据...
正在链接到云南高校图书馆文献保障联盟下载...
云南高校图书馆联盟文献共享服务平台 版权所有©
您的IP:18.219.203.214