The Influence Of Surface Subsidence On Construction Of JingHu High-speed Railway (Beijing-Ji'nan) And Its Analysis

Present paper's research purposes is 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.Combining with the circumstance of surface subsidence along the line between Beijing and Jinan of JingHu high-speed railway, the calculation and prediction are made for the amp litude and velocity of surface subsidence and the slope change along 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 - peed railway according to the relative standards. The influence which possibly produced to the surface subsidence by high-speed railroad's operation has carried on the discussion.Through 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 are put forward for prevention of subsidencer.The conclusion indicated that the regional surface subsidence can change track slope and produce the certain influence on the regularities of the bridge, subgrade and track of high - speed railway. However the local uneven surface subsidence canp reduce much influence on construction of high-speed railway, but it can be prevented by controlling groundwater and adop ting rational alignment, track gradient and engineering structure.