• 中国科学引文数据库(CSCD)来源期刊
  • 中文核心期刊中文科技核心期刊
  • Scopus RCCSE中国核心学术期刊
  • 美国EBSCO数据库 俄罗斯《文摘杂志》
  • 《日本科学技术振兴机构数据库(中国)》
二维码

隧道建设(中英文) ›› 2017, Vol. 37 ›› Issue (S2): 67-71.DOI: 10.3973/j.issn.2096-4498.2017.S2.010

• 研究与探索 • 上一篇    下一篇

约束对隧道二次衬砌早期温度应力分布的影响

张翠强1, 郭小红1, 田力达1, 张鹏1, 2, 陈俊3, 黄毅翔3, 王承科3, 郑邦友3   

  1. (1. 中国建筑股份有限公司技术中心, 北京 101300; 2. 北京中建柏利工程技术发展有限公司, 北京 101300;3. 中国建筑第五工程局有限公司, 湖南 长沙 410004)
  • 收稿日期:2017-02-07 修回日期:2017-08-30 出版日期:2017-12-30 发布日期:2018-02-25
  • 作者简介:张翠强(1983—),男,河北保定人,2014年毕业于同济大学,结构工程专业,博士,高级工程师,现从事工程抗震与结构计算分析。Email: zcq0716@126.com。
  • 基金资助:

    湘江漫滩富水地质条件下地铁抗裂防渗技术研究与应用(cscec-2016-z-26)

Influence of Restraint on Distribution of Early Thermal Stress of Tunnel Secondary Lining

ZHANG Cuiqiang1, GUO Xiaohong1, TIAN Lida1, ZHANG Peng1, 2, CHEN Jun3, HUANG Yixiang3, WANG Chengke3, ZHENG Bangyou3   

  1. (1. Technical Center, China State Engineering Corporation, Beijing 101300, China; 2. BaiLi Engineering Technology Development Corp., Ltd., China Construction, Beijing 101300, China; 3. China Construction Fifth Engineering Division Co., Ltd., Changsha 410004, Hunan, China)
  • Received:2017-02-07 Revised:2017-08-30 Online:2017-12-30 Published:2018-02-25

摘要:

为了解决隧道工程渗水问题,基于某隧道工程,采用MIDAS-GEN对其二次衬砌早期模筑混凝土进行非稳定温度应力场以及周围约束进行研究。研究结果表明: 约束可以改变隧道的早期拉应力场的分布,具有外围约束的隧道二次衬砌的拉应力为隧道厚度中间最大,无约束隧道的拉应力为外部最大,约束可以减小隧道外部区域的拉应力,使得远离约束区域的拉应力变大,而无约束隧道的拉应力分布与之相反。根据温度应力分布特点,建议在设计方面适当增大二次衬砌中间与外侧的配筋,在施工方面减小初期支护与二次砌衬之间约束等。

关键词: 隧道, 温度应力, 约束, 混凝土, 二次衬砌

Abstract:

In order to solve the water leaking problem in tunnel, the unsteady thermal stress field simulation and effect of restraint conditions on early concrete of tunnel secondary lining are studied by software MIDASGEN. The study results show that: 1) The distribution of early thermal stress of the tunnel can be changed by restraint conditions. 2) The maximum tension stress filed locates in middle of tunnel secondary lining with outer restraint force; while the maximum tension stress filed locates out of tunnel secondary lining without restraint. 3) The tension stress of outer region of tunnel can be reduced by restraint; the tension stress of region away from restrained area largens; while the tension stress distribution of tunnel without restraint is opposite to that of tunnel with restraint. According to the characteristics of thermal stress distribution, the reinforcement in the middle and outer of secondary lining should be strengthened moderately in design procedure, and the restraint between primary support and secondary lining should be reduced to avoid cracks.

Key words: tunnel, thermal stress, restraint, concrete, secondary lining

中图分类号: