城市浅埋连拱隧道单洞法施工工序的优化

上海交通大学学报（自然版） ›› 2012, Vol. 46 ›› Issue (01): 99-104.

城市浅埋连拱隧道单洞法施工工序的优化

段卫党1，袁成海2，郑文博3，石湛4，蔡永昌3

(1. 江西省高速公路投资集团泰和管理中心，江西泰和 343700； 2. 江西交通咨询公司，南昌 330008；3. 同济大学地下建筑与工程系，上海 200092； 4. 中铁第四勘察设计院集团有限公司，武汉 430063)

收稿日期:2011-06-05 出版日期:2012-01-30 发布日期:2012-01-30

Optimal Analysis of Construction Schemes for Urban Shallow-Buried Multi-arch Tunnel by Single-Tunnel Method

DUAN Wei-Dang-1, YUAN Cheng-Hai-2, ZHENG Wen-Bo-3, SHI Zhan-4, CAI Yong-Chang-3

(1. Jiangxi Province Highway Investment Group Taihe Management Center, Taihe 343700, Jiangxi, China; 2. Jiangxi Transport Consultation Company, Nanchang 330008, China; 3. Department of Geotechnical Engineering, Tongji University, Shanghai 20092, China; 4. China Railway Siyuan Survey and Design Group Co. Ltd., Wuhan 430063, China)

Received:2011-06-05 Online:2012-01-30 Published:2012-01-30

摘要/Abstract

摘要： 通过对单洞法中的上下台阶法与交叉中隔壁（CRD）法及其施工顺序的数值模拟，分析了大跨度连拱隧道单洞法施工中的位移控制效果与支护承载情况.结果表明，与上下台阶法相比，CRD法施工对隧道顶部围岩的竖向位移、拱腰的水平位移以及地表沉降的控制效果较好.在CRD法施工过程中，后行洞宜先开挖外侧区域，再开挖内侧区域.

关键词: 连拱隧道, 浅埋, 单洞法, 工序优化, 变形控制

Abstract: Building a large-span multi-arch tunnel by single-tunnel method under complex urban shallow-buried conditions is a challenging engineering problem. Without the middle wall supporting, it is very important to choose a suitable construction method and scheme, which is used to control the deformation of the surrounding rock, and reduce the adverse effect of construction process. By finite element method, the excavation effects of two construction methods, the bench method and the center cross diaphragm (CRD) method, were compared based on the displacements of surrounding rock and lining. The result shows that the CRD method has advantages in coupling the surrounding rock. For the CRD method, it is better to excavate the outer than the inner regions.

Key words: multi-arch tunnel, shallow-buried, single-tunnel method, schemes optimal, deformation control

中图分类号:

U 459

段卫党1, 袁成海2, 郑文博3, 石湛4, 蔡永昌3. 城市浅埋连拱隧道单洞法施工工序的优化[J]. 上海交通大学学报（自然版）, 2012, 46(01): 99-104.

DUAN Wei-Dang-1, YUAN Cheng-Hai-2, ZHENG Wen-Bo-3, SHI Zhan-4, CAI Yong-Chang-3. Optimal Analysis of Construction Schemes for Urban Shallow-Buried Multi-arch Tunnel by Single-Tunnel Method[J]. Journal of Shanghai Jiaotong University, 2012, 46(01): 99-104.

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