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隧道建设(中英文) ›› 2013, Vol. 33 ›› Issue (12): 1004-1009.DOI: 10.3973/j.issn.1672-741X.2013.12.005

• 研究与探索 • 上一篇    下一篇

北京地铁8号线盾构施工引起周围古旧平房振动响应的数值模拟研究

王鑫1, 韩煊1, 周宏磊1, 雷崇红2   

  1. (1. 北京市勘察设计研究院有限公司, 北京 100038; 2. 北京市轨道交通建设管理有限公司, 北京 100037)
  • 收稿日期:2013-09-05 修回日期:2013-10-10 出版日期:2013-12-20 发布日期:2013-12-27
  • 作者简介:王鑫(1982—),男,山东莱芜人,2010年毕业于西安建筑科技大学岩土工程专业,博士,工程师,主要从事土与结构相互作用的理论与应用研究工作。

Numerical Simulation on Vibration Response of Surrounding Ancient Buildings Induced by Shield Tunneling: Case Study on Line 8 of Beijing Metro

WANG Xin1, HAN Xuan1, ZHOU Honglei1, LEI Chonghong2   

  1. (1. BGI Engineering Consultants Ltd., Beijing 100038, China; 2. Beijing MRT Construction Administration Corporation, Beijing 100037, China)
  • Received:2013-09-05 Revised:2013-10-10 Online:2013-12-20 Published:2013-12-27

摘要:

以北京地铁8号线二期盾构施工工程为研究背景,针对典型工况,首先利用盾构作业面现场测试,得到盾构施工振动振源的时程曲线,并分析其频幅特性;其次对盾构施工引起的建筑物的振动响应进行现场测试。在此基础上,利用Z_soil有限元分析软件,考虑隧道结构-周围土层-建筑物的动力相互作用,以实测振源时程作为荷载输入,建立盾构施工引起周围建筑物振动响应的三维动力有限元分析模型;结合现场测试的成果,分析地铁隧道盾构施工引起的周围建筑物的振动响应规律。主要结论如下: 1)盾构施工引起的横断面上的建筑物振动响应,随距隧道中心距离的增加而呈现出衰减的趋势,但又表现出一定的波动性; 2)振动对于作业面向前的建筑物的影响较其对于作业面向后的影响要大。

关键词: 北京地铁, 盾构施工, 土与结构动力相互作用, 数值模拟, 振动响应

Abstract:

During the shield tunneling of Line 8 of Beijing Metro, the timedependent curve of the vibration source is obtained by means of field monitoring at the shield tunneling face and the property of the amplitude and the frequency of the vibration source is analyzed. Then, the vibration response of the surrounding buildings induced by shield tunneling is measured. 3D dynamic finite element model of the vibration response of the surrounding buildings induced by shield tunneling is established by means of Z_soil FEM program. The rules of the vibration response of the surrounding buildings induced by shield tunneling are analyzed on basis of the site monitoring results. Conclusions drawn are as follows: 1) The vibration response of buildings on the tunnel crosssection induced by shield tunneling would gradually decay as the distance to the tunnel center line increases, and it has fluctuation tendency; 2) The influence of the vibration on the buildings ahead of the working face is heavier than that on the buildings behind the working face.

Key words: Beijing Metro, shield tunneling, soilstructure interaction, numerical simulation, vibration response