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The Influence of Surface Subsidence on Construction of High-speed Railway in North China Plain and Its Countermeasures |
LI Guo-he , XU Zai-liang, SUN Shu-li ,JING Zhi-dong |
The Third Railway Survey and Design Institute Group Corporation, Tianjin 300142,China |
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Abstract Research purposes: Through making clear of the characteristics of surface subsidence and its influence on construction of high-speed railway in North China plain, the countermeasures and construction measures for prevention of subsidence are put forward for the purpose of providing reference to survey, design and construction of high-speed railway.
Research methods: Combining with the circumstance of surface subsidence along the line between Beijing and Jinan of one high-speed railway, the calculation and prediction are made for the amplitude and velocity of surface subsidence and the slope change slung the railway with traditional methods,and also the calculations are made for the influences of uneven surface subsidence on the regularities of the bridge,subgrade and track of high-speed railway according to the relative standards.
Research results : trough doing research,the characteristics of surface deformation in subsidence area and its influence manner and degree on high-speed railway are made clear, and the countermeasures and construction measures arc put forward for prevention of subsidencer.
Research conclusions: The regional surface subsidence can change track slope and produce the certain influence on the relgularities of the badge, subgrade and track of high-speed railway. However the local uneven sut}ace subsidence can produce much influence on construction of high-speed railway, but ii can be prevented by controlling groundwater and adopting rational alignment, tracts gradient and engineering structure
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Received: 25 June 2007
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