摘要
以某地铁区间段施工过程为背景,用MIDAS/GTS三维有限元软件分析盾构法开挖对地表沉降的影响,通过改变单一因素研究不同土质、不同土体参数下地表沉降变化规律.模拟时充分考虑开挖过程中应力的释放,按照施工步骤逐步施加衬砌,得出盾构推进到不同位置地表沉降的变化,同时分析地表沉降与不同土体参数之间的关系.结果表明,隧道开挖至不同距离时,地表的沉降符合一定的变化,当土体参数不同时,管线的沉降最大值有较为明显的变化.
Based on the construction process of a certain section of the local subway,This article analyzes the impact of shield tunneling on the surface settlement by MIDAS/GTS three-dimensional finite element software.This article studies on the variation law of surface settlement under different soil properties and soil parameters by changing a single factor.Fully considering the release of stress while excavating during simulation,it gradually applies lining according to the construction steps,the changes in surface settlement when the shield tunneling is advanced to different positions is obtained,the relationship between surface subsidence and different soil parameters is analyzed at the same time.The results show the settlement of the surface conforms to certain changes when the tunnel is excavated to different distances.When the soil parameters are different,there is a significant change in the maximum settlement value of the pipeline.
作者
童雪雪
沈曼
胡元超
TONG Xue-xue;SHEN Man;HU Yuan-chao(Civil engineering Department of Urban Construction College,Anhui Xinhua University,Hefei 230088,Anhui,China)
出处
《喀什大学学报》
2023年第6期58-61,共4页
Journal of Kashi University
基金
2021年安徽新华学院校级科研项目“城市地铁修建对地表沉降的影响研究”(2021zr006)
2023年安徽省高等学校自然科学研究重点项目“非极限状态土压力在位移变化下对双排桩支护结构的内力影响”(2023AH051819).
关键词
盾构
地表沉降
数值模拟分析
三维有限元
shield tunneling
surface subsidence
numerical simulation analysis
3D finite element
