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盾构下穿合肥高铁南站对路基的影响分析
引用本文:崔建华,梁玄昌.盾构下穿合肥高铁南站对路基的影响分析[J].安徽建筑大学学报,2016,24(2):16-19.
作者姓名:崔建华  梁玄昌
作者单位:安徽建筑大学土木工程学院,安徽合肥,230601
基金项目:安徽省科技攻关计划资助项目(1501041133)
摘    要:本文以合肥市轨道交通1号、5号线下穿合肥高铁南站为依托,采用MIDAS/GTS有限元软件对盾构隧道施工过程模拟,分析了桩基群上部铁路路基沉降变化。通过模拟可知,既有桩基群能有效控制盾构施工过程中路基的沉降。先开挖的隧道引起的高铁路基沉降值大于后开挖的隧道引起的高铁路基沉降值,且在全线贯通时先开挖隧道引起的路基沉降与后开挖隧道引起的沉降产生明显的叠加。

关 键 词:盾构隧道  下穿高铁路基  桩基群  路基沉降

Study on the Effect of Shield Tunnel Down-traversing Hefei South Railway Station on the Ground
CUI Jianhua and LIANG Xuanchang.Study on the Effect of Shield Tunnel Down-traversing Hefei South Railway Station on the Ground[J].Journal of Anhui Jianzhu University,2016,24(2):16-19.
Authors:CUI Jianhua and LIANG Xuanchang
Affiliation:Civil engineering school,Anhui Jianzhu University ,Anhui Hefei,230601 and Civil engineering school,Anhui Jianzhu University ,Anhui Hefei,230601
Abstract:Based on Hefei subway No.1 and No.5 rail transits traversing beneath the subgrade of the high-speed south station , the numerical model of MIDAS/GTS was established to analyze the changes of subgrade settlement above the crowd stakes during the process of construction of shield tunnel . The existing crowd stakes can effectively control the subgrade settlement during the process of construction of shield tunnel by simulating, and high-speed railway subgrade settlement caused by the excavated tunnel ifrstly exceeded that of the later , and obvious superposition of subgrade settlement induced by ifrstly and later excavated shield tunnel can be seen when the whole line transifxed .
Keywords:Shield tunnel  High-speed Rail Subgrade  Pile grope  The settlement of Subgrade
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