冒天山隧道整体道床不均匀沉降病害分析

Analysis on uneven settlement diseases of Maotianshan tunnel monolithic roadbed

以包西铁路冒天山隧道整体道床垫层混凝土不均匀沉降病害为研究对象,通过折减不同范围轨底垫层及仰拱填充强度参数与模量大小,施加多次列车荷载,对该隧道病害进行模拟计算,分析了整体道床板大小主应力、沉降变形及沉降差,得出了导致整体道床板局部脱离垫层、开裂翘曲问题的主要影响因素。

Taking uneven settlement diseases of Maotianshan tunnel monolithic roadbed cushion concrete as the research target,through reducing bottom track cushion and inverted arch filling strength parameters and modulus with different scopes and implementing various trains loads,carries out the simulation computation of the tunnel diseases,analyzes majors tress,settlement deformation and settlement difference of monolithic roadbed,finally finds out major influential factors leading to monolithic roadbed separating from the cushion and cracking and warping and other problems.