盾构隧道下穿黄河施工对已建桥梁基础的影响模拟
贾少春
Impact Simulation of Shield Tunnel Construction Crossing under the Existing Bridge Foundation on the Yellow River
JIA Shaochun
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作者信息:1.中铁第一勘察设计院集团有限公司，710043，西安；
2.陕西省铁道及地下交通工程重点实验室，710043，西安
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Affiliation:China Railway First Survey and Design Institute Group Ltd.，710043，Xi′an，China
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关键词:
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Key words:
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DOI:10.16037/j.1007-869x.2019.06.017
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中图分类号/CLCN:TU433
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栏目/Col:研究报告
摘要:
为研究兰州轨道交通1号线迎门滩-马滩区间盾 构隧道近距离穿越银滩黄河大桥对桥梁桩基的影响，采用有限元计算方法对盾构下穿黄河施工进行动态模拟，并从地表沉降、桥梁桩基位移、内力变化等方面对其影响进行分析。经模拟结果与现场实际情况对比，两者吻合度较高。 模拟方法可定量预测盾构掘进施工对已建桥梁基础的影响。
Abstracts:
In order to study the impact of Yingmentan-Matan Section on Lanzhou rail transit Line 1 on the Yellow River Bridge where the shield tunnel construction crosses under the bridge pile foundation, the finite element calculation method is used to simulate the shield tunnel construction underneath the Yellow River，and the impacts of construction are analyzed from aspects of ground settlement，bridge pile foundation displacement and internal force changes. The simulated results coincide with the practical conditions，showing that the simulation method could quantitatively predict the impact of shield tunnel construction on the pile foundation of existing bridges.
引文 / Ref:
贾少春.盾构隧道下穿黄河施工对已建桥梁基础的影响模拟[J].城市轨道交通研究，2019，22(06):76.
JIA Shaochun.Impact simulation of shield tunnel construction crossing under the existing bridge foundation on the Yellow River[J].Urban Mass Transit，2019，22(06)：76.
JIA Shaochun.Impact simulation of shield tunnel construction crossing under the existing bridge foundation on the Yellow River[J].Urban Mass Transit，2019，22(06)：76.
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