盾构隧道近距离下穿立交桥施工影响分析及控制
周群立1张有桔2
Impact Analysis and Control of Shield Tunnel Crossing under Flyover at Close Range
ZHOU QunliZHANG Youjie
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作者信息:1.合肥城市轨道交通有限公司， 230001, 合肥；
2.安徽省交通规划设计研究总院股份有限公司，230088, 合肥
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Affiliation:Hefei Urban Rail Transit Co., Ltd., 230001, Hefei, China
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关键词:
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Key words:
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DOI:10.16037/j.1007-869x.2019.05.010
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中图分类号/CLCN:TU433
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栏目/Col:研究报告
摘要:
以合肥轨道交通2号线青阳路站—西园路站盾构区间下穿五里墩立交桥为工程背景,通过盾构施工时的地层桩基变形分析和全桥上部结构受力及变形分析，提出了适合本工程盾构施工时的地层损失率控制指标、桥梁基础差异沉降控制指标，以及穿越施工时的针对性保护措施，保证了该工程的顺利实施，也为合肥轨道交通建设积累了重要经验。
Abstracts:
Taking the shield tunnel section between Qingyang Road Station and Xiyuan Road Station on Hefei rail transit Line 2 as the engineering background, which crosses under the Wulidun Flyover at close range, and through analyzing the stratum-pile deformation, the stress and deformation of the upper bridge structure during shield construction, the control indexes of formation loss rate and bridge foundation differential settlement suitable for the project, the targeted protection measures during the shield tunneling crossing under the bridge are proposed. These measures ensure the smooth implementation of the project, and accumulate important experiences for the construction of urban rail transit in Hefei City.
引文 / Ref:
周群立,张有桔.盾构隧道近距离下穿立交桥施工影响分析及控制[J].城市轨道交通研究,2019,22(05):47.
ZHOU Qunli，ZHANG Youjie.Impact Analysis and Control of Shield Tunnel Crossing under Flyover at Close Range[J].Urban Mass Transit，2019，22(05)：47.
ZHOU Qunli，ZHANG Youjie.Impact Analysis and Control of Shield Tunnel Crossing under Flyover at Close Range[J].Urban Mass Transit，2019，22(05)：47.
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