摘要
文章以重庆市地铁1号线大坪车站跨越既有线段施工为研究对象,介绍采用FLAC3D对近距离叠交情况下新建隧道施工引起既有隧道衬砌的应力和位移进行了模拟和分析,同时分析了新建隧道以桩+承台的方法跨越隧道施工后桩轴力和承台梁弯矩的分布情况,研究成果为今后类似地铁工程建设提供参考依据。
Taking the existing line construction in Chongqing subway 1 train station as study object,the article introduces the method of using FLAC3D to perform simulation and analy-sis on the lining stress and displacement under tunnel construction.It also analyzes the distr-ibution of pile shaft force and apron piece bending moment under this method.The result shows that this study can provide reference to related project.
出处
《西部交通科技》
2011年第7期72-77,共6页
Western China Communications Science & Technology
基金
湖南省自然科学基金资助项目(10JJ3007)
关键词
跨越既有线
衬砌应力
衬砌位移
桩轴力
承台梁弯矩
Cross the existing line
Lining stress
Lining displacement
Pile shaft force
Apron piece bending moment
