用预应力锚索抗滑桩整治公路深层滑坡灾害

Using the stabilizing piles with prestressed anchor ropes for remedy of deep-strata landslide of highway roadbed

通过几个工程实例，介绍了采用预应力锚索抗滑桩整治公路深层滑坡灾害这一新方法的基本原理、设计方法和整治效果．将锚索的一端锚固于稳定基岩内，另一端与抗滑桩顶相连，然后对锚索施加预应力，将抗滑桩由一端嵌固、另一端自由的“悬臂式”受力状态改变成一端嵌固、另一端支承的“简支”受力状态，从而达到整治滑坡灾害的目的．近年来，作者采用这种方法整治了30余个滑坡灾害工程，都取得了十分显著的效果．一般可节省灾害整治费用20％～40％．

On the base of several cases, the basic principle、the design method and the effects of remedy for deep-strata landslide disaster ate introduced in tiffs paper by stabilizing piles with prestressed anchor ropes, one end of the anchor rope is embedded in stable rock mass, while the other is connected to the head of the stabilizing pile, and then thc anchor rope is prestressed. The stabilizing pile, one end of which is fixed and the other is free, is changed from one state of free head into another statee of elastically fixed head,so that the landslide disaster is remedied. in recent years, the author has used tiffs method for remding more than thirty landslides, and all of those have received very well signifieant effects. This method can generally saved a cost of 20%～40% for the deep-strata landslide of highway.