摘要
以武汉轨道3号线区间盾构隧道近距离下穿二七大桥引桥段高架桥为对象,采用有限元方法研究分析了隧道开挖对现状桥墩的安全性影响,研究表明在一定的控制标准下,原有桥梁桩基的单桩轴向受压承载能力及抗弯能力均能满足要求。计算结果已为该隧道的盾构施工提供依据,分析方法可为同类结构提供参考。
The finite element method is used to study and analyze the influence of tunnel excavation on the safety of present bridge pier by the project of the sectional shield tunnel to cross under the elevated bridge in the approach bridge section of Erqi Bridge in short distance in Metro Line 3 of Wuhan. The study result shows that the distressed bearing capacity and bending resistance of single-pile axial direction of the original bridge pile foundation can meet the requirements under the certain control standard. The calculation result has provided the basis for the shield construction of this tunnel. The analysis method can be referred for the similar structures.
出处
《城市道桥与防洪》
2017年第5期138-139,共2页
Urban Roads Bridges & Flood Control
关键词
盾构隧道
桥墩
桩基
shield tunnel
bridge pier
pile foundation
