基坑开挖与下卧盾构隧道的相互影响分析
摘要
新建新加坡T5航站楼工程的明挖基坑与多条盾构隧道大角度交叉跨越,存在集中施工相互影响问题。明挖基坑坑底与其下盾构隧道拱顶距离仅为10.3～17m,且两者施工先后顺序存在各种可能性。采用三维有限元软件FLAC3D进行模拟分析,对"先基坑后盾构、先盾构后基坑"等各种不同的工况进行分析计算,得出明挖基坑与盾构隧道相互影响作用范围、大小,并指出施工注意事项,对工程设计和施工起到一定的指导作用。
引文
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[13]青二春.地铁隧道上方大面积卸荷下的变形及控制模式研究[D].上海:同济大学,2007.
[14]姬泽斌.盾构隧道和明挖基坑施工相互影响与处理措施[J].建筑工程,2016,(10):66+68.
[15]万雁南.盾构隧道与明挖基坑施工相互影响与处理措施[J].铁道勘测与设计,2016,(4):43-48.