盾构法施工过程的有限元模拟
摘要:在综合考虑了现有的有限元模拟方法的基础上,对部分仿真模拟细节进行了改进,改进了水平荷载的施加方法,用"等代层"来模拟盾尾建筑空隙,用预设单元的刚度迁移来模拟盾构的推进过程。通过对某地铁隧道盾构施工过程的模拟,分析了盾构推进过程中地表土体的位移与变形,计算得到的隧道横断面和隧道纵向地面沉降分布曲线与实测数据比较接近,结果证明了模拟方法是可行的。
Abstract:Based on the three-dimensional nonlinear finite element model, the applying method for simulating shield tunneling and transverse force at tunnel face is modified. And the advancement process of shield tunnel is modeled by the transferring stiffness of the established elements and the gap caused by tail void are substituted by ‘equivalent circle zone’. The proposed modeling techniques are applied to simulate a tunneling project. The distributions of soil displacement on the ground surface associated with the advancement process of shield tunnel are analyzed. According to the comparisons of numerical results with field measurements, the proposed numerical procedure is found to be an effective approach for predicting the deformation dun to shield tunneling.
中文标题:
盾构法施工过程的有限元模拟
3D Finite Element Simulation Analysis on Tunnel Shield Driven Process
作者:
张国营1,傅国利2
Zhang Guoying1,Fu Guoli2
作者简介:张国营,1980年生,男,汉族,山东青州人,毕业于焦作工学院,助理工程师,主要从事岩土工程设计、施工管理及研究工作。E-mail:zguoyingl@163.com
通讯地址:
1. 山东省城乡建设勘察院, 山东济南 250031; 2. 临沂市建设安全工程质量检测中心, 山东临沂 276000
1.ShandongprovinceInv.&Surv.InstituteofUrb.&Rur.Construction,JinanShandong250031; 2.LinyiTestCenterforConstructionSecurity&EngineeringQuality,LinyiShandong276000China
中图分类号:U455
出版物:岩土工程技术
收稿日期:2007-08-29
网络出版日期:2021-07-10
关键词:盾构隧道,三维有限元法,地层变形
Key words:tunneling engineering,3D FEM,deformation of soil mass
文档包含图片数量:图片(0)张
文档包含表格数量:表格(0)个
参考文献:
基金项目:
- 文件大小:
- 316 KB
- 下载次数:
- 60
-
高速下载
|
|