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隧道建设(中英文) ›› 2010, Vol. 30 ›› Issue (1): 67-70,77.DOI: B

• 施工技术 • 上一篇    下一篇

浅埋大跨连拱隧道下穿既有建筑物施工沉降控制

于清浩, 高志萍, 谢勇涛   

  1. (1.中铁第五勘察设计院集团有限公司|北京 102600;2.长春市市政工程设计研究院|长春 130041)
  • 收稿日期:2009-09-09 修回日期:2010-01-27 出版日期:2010-02-20 发布日期:2010-05-11
  • 作者简介:于清浩(1981—)男|辽宁朝阳人|2008年毕业于北京交通大学隧道工程专业|硕士|工程师|现主要从事隧道设计工作。

Case Study on Settlement Control in Construction of Shallow buried |Large span Multi arch Tunnel Crossing underneath Existing Buildings

XU Qing-Gao, GAO Zhi-Ping, XIE Yong-Chao   

  1. (1. China Railway 5th Survey and Design Institute Group Co., Ltd., Beijing 102600, China|2. Changchun Municipal Engineering Design &|Research Institute|Changchun 130041, China)
  • Received:2009-09-09 Revised:2010-01-27 Online:2010-02-20 Published:2010-05-11

摘要:

根据工程类比法,采用CRD法优化厦门机场下穿34号楼隧道工程施工步骤。借助数值分析方法,分析既有建筑的沉降规律;根据现场实测及数值模拟结果,提出超前注浆、地面硬化及补偿抬升注浆、洞内全断面帷幕注浆、大管棚超前支护等多种施工辅助措施控制沉降,结果表明施工过程既有建筑结构沉降得到有效控制,最终沉降量小于40mm。

关键词: 浅埋大跨连拱隧道, CRD法, 数值分析, 沉降控制

Abstract:

Wutongshan tunnel of Jichang Road project in Xiamen, China, which crosses underneath No. 34 building, is constructed by CRD method. The construction procedure of the tunnel is optimized by engineering analogy method. The settlement rule of the existing building is analyzed by numerical analysis method. Assistant construction measures, such as advance grouting, surface concrete paving, compensation grouting, fullface curtain grouting and advance reinforcement by large pipe roof, are proposed on basis of the measured settlement values and simulated settlement values. In the end, the settlement of the building caused by tunnel construction is effectively controlled, with the final settlement being less than 40mm.

Key words: shallowburied, largespan multiarch tunnel, CRD construction method, numerical analysis, settlement control

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