中文核心期刊
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重庆交通大学学报（自然科学版）

重庆交通大学学报（自然科学版） ›› 2013, Vol. 32 ›› Issue (3): 438-441.DOI: 10.3969/j.issn.1674-0696.2013.03.16

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隧道动力深浅埋界限及其影响因素研究

高峰，谭绪凯，孙常新   

  1. 重庆交通大学山区桥梁与隧道工程国家重点实验室培育基地，重庆400074
  • 收稿日期:2012-06-01 修回日期:2012-10-08 出版日期:2013-06-15 发布日期:2015-03-12
  • 作者简介:高峰(1964—)，男，浙江云和人，教授，博士生导师，博士，主要从事隧道及地下工程方面的研究。E-mail:gaofeng1964@163.com。
  • 基金资助:
    国家自然科学基金项目( 51178490) ; 山区桥梁与隧道工程国家重点实验室培育基地开放基金项目( CQSLBF-Y12-2) ; 中铁二院科 研项目( 2009-55)

Boundary between Shallowly-Buried and Deeply-Buried Tunnel Dynamic and Its Influence Factors

Gao Feng，Tan Xukai，Sun Changxin   

  1. State Key Laboratory Cultivation Base for Bridge ＆ Tunnel Engineering in Mountain Areas，Chongqing Jiaotong University，Chongqing 400074，China
  • Received:2012-06-01 Revised:2012-10-08 Online:2013-06-15 Published:2015-03-12

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摘要： 通过有限元模拟计算了不同围岩条件、洞跨及地震烈度下的隧道地震反应特性，研究了隧道动力深浅埋划分 界限及其影响因素。结果表明:隧道结构受力随着隧道埋深的增加呈现先增后减的变化规律，可见拐点即为深浅埋 界限;围岩条件越好，隧道的动力深浅埋界限越深，隧道在Ⅲ级、Ⅳ级及Ⅴ级围岩条件下的动力深浅埋界限分别为 100，80，60m左右;隧道动力深浅埋界限深度随着隧道跨度的增加而减小，但其受影响程度较小，隧道在跨径为6， 10，20m的情况下的动力深浅埋界限分别为100，100，80m左右;隧道动力深浅埋界限不受地震烈度的影响。

关键词: 隧道动力深浅埋界限, 影响因素, 围岩条件, 隧道跨度, 地震烈度。

Abstract: The boundary of shallowly buried tunnel and deeply buried tunnel on dynamic characteristics and its influence factors are studied by using finite element to simulate the seismic response of tunnel with different surrounding rock condition， different tunnel span and different seismic intensity. The research results show that the stress of tunnel structure increases at first，and then decreases with increase of the buried depth. It indicates that the inflection point is the boundary of shallowly buried tunnel and deeply buried tunnel. The better the surrounding rock condition，the deeper the depth of the boundary will be，and in that condition the depth of the boundary in grade Ⅲ，grade Ⅳand grade Ⅴ rock is about 100，80 and 60 m respectively. The depth of the boundary decreases with the increase of the tunnel span，but the influence is little. In that condition the span is 6，10，20 m，and the corresponding depth of the boundary is about 100，100，80 m respectively. The seismic intensity will not influence the boundary of shallowly buried tunnel and deeply buried tunnel.

Key words: theboundarybetweenshallowly-burieddeeply-buriedtunneldynamic, influencefactors, surroundingrockscondition, tunnelspan, seismicintensity

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