排水涵及防护工程施工对临近高铁桥梁的影响

Influence of Construction of Drainage Culvert and Protection Engineering on Adjacent High-speed Railway Bridge

随着高速铁路的日益发展及城市基础建设的不断完善,市政工程下穿高铁桥梁的立交工程越来越多,而高铁桥梁的正常运营对基础变形和轨道的平顺性有着严格的要求。以某排水涵下穿高铁桥梁的实际工程案例为背景,运用MIDAS-GTS有限元软件对施工阶段进行数值模拟,计算排水涵及配套防护工程施工引起的临近高铁桥梁基础的竖向和水平变形,判断防护方案的可实施性,为类似工程提供设计经验和评估方法。

With the increasing development of high-speed railways and the continuous improvement of urban infrastructure,there are more and more interchange projects under high-speed railway bridges under municipal projects,and the normal operation of highspeed railway bridges has strict requirements for foundation deformation and track smoothness. Based on the actual engineering case of a drainage culvert under a high-speed railway bridge,this paper uses MIDAS-GTS finite element software to perform numerical simulations on the construction stage to calculate the vertical and horizontal deformation of the adjacent high-speed rail bridge foundation caused by the construction of the drainage culvert and supporting protection engineering,to judge the implementability of the protection plan,to provide design experience and evaluation methods for similar projects.