邻近堆载诱发既有隧道受力变形研究
作者:
作者单位:

作者简介:

通讯作者:

中图分类号:

U455.43

基金项目:

国家自然科学基金青年科学(41807262)


Study on Deformation of Existing Tunnel Induced by Adjacent Surcharge
Author:
Affiliation:

Fund Project:

  • 摘要
  • |
  • 图/表
  • |
  • 访问统计
  • |
  • 参考文献
  • |
  • 相似文献
  • |
  • 引证文献
  • |
  • 资源附件
  • |
  • 文章评论
    摘要:

    地表堆载会引起邻近土体产生沉降变形,进而会对地下空间中的邻近隧道造成安全威胁。为了获得邻近既有隧道受到地表作用的影响,采用Boussinesq解获得地表堆载对邻近既有隧道的竖向附加应力,将既有隧道简化成搁置Vlasov地基模型的Euler-Bernoulli梁,引入既有隧道侧向土体影响,进一步获得隧道在邻近堆载作用下的变形响应。通过与既有工程案例数据对比分析可知:该方法理论解析与监测数据较为接近,验证了方法的可靠性;与该方法退化解析对比,本文方法更贴近工程实测数据。参数研究表明:隧道与堆载中心间距的增大会引起隧道纵向位移及内力的减小;堆载荷载的增大会引起隧道纵向位移及内力的增大;随着既有隧道刚度的逐渐增大,隧道纵向位移会逐渐减小,但会引起既有隧道内力的增大。

    Abstract:

    The adjacent soil settlements deformation induced by surface surcharge and further the existing tunnels will be threat in underground space. In order to obtain the influence of surcharge loading on existing tunnel, the Boussinesq solution is used to obtain the vertical additional stress of the adjacent existing tunnel under surcharge loading, and the existing tunnel is simplified as an infinite Euler-Bernoulli beam with Vlasov foundation model. Considering the influence of the lateral soil of the existing tunnel, and then the deformation response of the tunnel under surcharge loading can be obtained. Compared with the existing engineering data, the theoretical analysis is the approach to monitoring data, and the reliability of the method can be verified. Compared with the degradation analysis of this method, the proposed method is closer to the engineering measured data. The last parameter studies show the decrease of the longitudinal displacement and internal force of the tunnel with increasing of distance between the tunnel. The longitudinal displacement and internal force of the tunnel can be increased with increasing of surcharge loading. Increasing the tunnel stiffness not only reduces the longitudinal displacement but increase the internal force of the tunnel.

    参考文献
    相似文献
    引证文献
引用本文

张涛,欧伟山,齐晓强. 邻近堆载诱发既有隧道受力变形研究[J]. 科学技术与工程, 2023, 23(2): 802-809.
Zhang Tao, Ou Weishan, Qi Xiaoqiang. Study on Deformation of Existing Tunnel Induced by Adjacent Surcharge[J]. Science Technology and Engineering,2023,23(2):802-809.

复制
分享
文章指标
  • 点击次数:
  • 下载次数:
  • HTML阅读次数:
  • 引用次数:
历史
  • 收稿日期:2022-04-15
  • 最后修改日期:2022-10-15
  • 录用日期:2022-09-05
  • 在线发布日期: 2023-02-15
  • 出版日期:
×
律回春渐,新元肇启|《科学技术与工程》编辑部恭祝新岁!
亟待确认版面费归属稿件,敬请作者关注