地表倾斜对桥梁结构的影响

Influence on Bridge in the Incline Deformation Area

桥梁在采动过程中因为受到地表变形的影响,结构受力发生改变,除了车辆荷载和自重之外,还会产生附加内力。当附加内力大于桥梁的最大抵抗能力时,桥梁结构将发生破坏。为使桥梁在采动过程中不发生破坏,应对采动区的地表变形进行预测,充分了解采动区桥梁抗倾斜的能力,在桥梁结构破坏之前,对桥梁采取相应的加固措施,减少桥梁破坏带来的经济损失。

Mining will cause ground surface deformation, and the force of bridge structural will be changed because of the impact of the surface deformation, except the vehicle load and its own weight in the normal, but also generate additional internal force. When additional internal force is greater than the maximum resistance of the bridge, the bridge structure will undergo damage. In order o make bridge in the mining area do not occur damage during mining, it is necessary to predict ground surface deformation in advance in the mining area, to fully understand the capacity of the bridge. And before the bridge structural damaged, it is necessary to take appropriate strengthening measures to reduce economic losses caused by bridge damage.