多线叠交盾构隧道近接施工模型试验

上海交通大学学报（自然版） ›› 2015, Vol. 49 ›› Issue (07): 1040-1045.

多线叠交盾构隧道近接施工模型试验

张晓清1，张孟喜1，吴应明2，李磊1，王有成1

（1.上海大学土木工程系, 上海 200072；2.中铁二十局集团有限公司，西安 710016）
摘要：多线叠交软土盾构隧道是随地铁建设不断发展而出现的一种复杂隧道空间布置形式.针对多线叠交盾构隧道垂直上、下穿2种典型穿越施工形式，借助室内模型试验，根据盾构隧道近接施工的技术特点和控制要求，采用排液法，重点分析了多线叠交盾构隧道在各穿越阶段下因地层损失和开挖卸荷引起的地表沉降以及既有隧道纵向变形规律.分析结果可为今后类似多线叠交盾构隧道工程的设计和施工提供理论指导.
关键词：盾构隧道；多线叠交；近接施工；模型试验
中图分类号： U 456.3文献标志码： A
Model Test on Approaching Construction of
Multiline Overlapped Shield Tunnelling
Abstract： With the unceasing development of the metro construction, multiline overlapped shield tunnels in soft soil are being built as a complex spatial distribution. For two kinds of typical construction methods of upcrossing and undercrossing, model test research was applied to analysis the dynamic construction process. According to the shield tunneling technology characteristics and control requirements of approaching construction, the drainage method was applied to selective analysis of the surface subsidence and the existing tunnel longitudinal deformation caused by formation damage and excavation unloading of multiline overlapped tunnel at various stages. The research results can provide some theoretical basis and prophase guidance for similar projects in the future.
Key words： shield tunnelling; multiline overlapped; approaching construction; model test

收稿日期:2014-10-30
基金资助:
国家自然科学基金资助项目(41172238)

Model Test on Approaching Construction of Multi-line Overlapped Shield Tunnelling

ZHANG Xiaoqing1，ZHANG Mengxi1，WU Yingming2,LI Lei1，WANG Youcheng1

(1.Department of Civil Engineering, Shanghai University, Shanghai 200072, China;2.China Railway 20 Bureau Group Corporation, Xi’an 710016, China)

Received:2014-10-30

摘要/Abstract

摘要：

摘要：多线叠交软土盾构隧道是随地铁建设不断发展而出现的一种复杂隧道空间布置形式.针对多线叠交盾构隧道垂直上、下穿2种典型穿越施工形式，借助室内模型试验，根据盾构隧道近接施工的技术特点和控制要求，采用排液法，重点分析了多线叠交盾构隧道在各穿越阶段下因地层损失和开挖卸荷引起的地表沉降以及既有隧道纵向变形规律.分析结果可为今后类似多线叠交盾构隧道工程的设计和施工提供理论指导.

关键词: , 盾构隧道, 多线叠交, 近接施工, 模型试验

Abstract:

Abstract： With the unceasing development of the metro construction, multi-line overlapped shield tunnels in soft soil are being built as a complex spatial distribution. For two kinds of typical construction methods of upcrossing and under-crossing, model test research was applied to analysis the dynamic construction process. According to the shield tunneling technology characteristics and control requirements of approaching construction, the drainage method was applied to selective analysis of the surface subsidence and the existing tunnel longitudinal deformation caused by formation damage and excavation unloading of multiline overlapped tunnel at various stages. The research results can provide some theoretical basis and prophase guidance for similar projects in the future.

Key words: shield tunnelling, multi-line overlapped, approaching construction, model test

中图分类号:

U 456.3

张晓清1，张孟喜1，吴应明2，李磊1，王有成1. 多线叠交盾构隧道近接施工模型试验[J]. 上海交通大学学报（自然版）, 2015, 49(07): 1040-1045.

ZHANG Xiaoqing1，ZHANG Mengxi1，WU Yingming2,LI Lei1，WANG Youcheng1. Model Test on Approaching Construction of Multi-line Overlapped Shield Tunnelling[J]. Journal of Shanghai Jiaotong University, 2015, 49(07): 1040-1045.

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