铁道标准设计2017，Vol.61Issue(3)：103-107,5.DOI:10.13238/j.issn.1004-2954.2017.03.022
超临界桥桩基施工对既有隧道影响数值与实测分析
Monitoring and Numerical Analysis of the Impact of Supercritical Bridge Pile Foundation on Existing Tunnel
吕宝伟1
作者信息
- 1. 铁道第三勘察设计院集团有限公司城交分院,天津 300251
- 折叠
摘要
Abstract
A newly-built overpass crosses over repeatedly the adjacent shield-tunnel, and the bridge pile foundation is very close to the shield-tunnel, which falls into approaching construction. During the construction of the pile foundation, some factors like drilling disturbance and construction load result in the displacement and deformation of strata, causing displacement and deformation of the tunnel structure. By numerical simulation, the paper analyzes the internal force and displacement of the tunnel structure due to bridge pile construction, optimizes bridge design and construction plan and minimizes the influence and risks. The simulation results obtained by Midas/GTS show that the maximum settlement deformation of arch crown and radial convergent deformation are within the specified limits and comply with the field monitoring data.关键词
桥梁桩基/地铁隧道/钢护筒/数值计算/监控量测/影响分析Key words
Bridge pile foundation/Metro tunnel/Steel casing/Numerical calculation/Monitoring measurement/impact analysis分类
交通工程引用本文复制引用
吕宝伟..超临界桥桩基施工对既有隧道影响数值与实测分析[J].铁道标准设计,2017,61(3):103-107,5.
