Prestressed Anchor Cable Anti-slide Pile In The Application Of Highway Landslide Governance

There are many mountainous regions in the middle and west of China, which have a weak geo-environment and a perplexing geo-condition. When we develop transportation construction project, we will meet high and steep slopes that we can not escape. If we have no proper measure or the geo-condition is bad, landslide is likely to happen. With the rapid development of transportation project and the deepening of west exploitation, disasters of slope project such as landslide are more serious. How to solve the problem effectively is the key to protect the construction and working of transportation project. From now on, there are many measures to deal with landslide, such as retaining wall, anti-slide pile, anchor pole, anchor cable and stabilizing piles with pre-stressed anchored cables. It is indicated by project practice that the technique of stabilizing piles with pre-stressed anchored cables is an effective measure in landslide remediation works. Because of the complexity of inter-action by landslide and anti-slide pile, the method for design and calculation of stabilizing piles with pre-stressed anchored cables is not reasonable, the anchoring mechanism and the stability analysis need further study.Through theoretical analysis, the design, reinforcement mechanism and its evaluation to the anti-slide pile with pre-stressed anchor cable have been studied at large. It has great theoretical meaning and application value, also can offer references to reinforcement treatment.Firstly, the paper studies the main factor of stability and transformation and breakage form of consequent bedding rock slope. The main factor consists of geology, project and non-geology-non-project.Secondly, the reciprocity relation of pre-stressed anchor cable, anti-slide pile and rock-soil mass has been analyzed, then the reinforcement mechanism and coordination deformation relative of anti-slide pile with pre-stressed anchor cable are discussed and Summarized.Thirdly, improved calculation method is studied against the limitation in the design and calculation to the pre-stressed anchor cable with ant-slide pile nowadays.According to this kind of method, internal stress distribution of anti-slide pile is morereasonable, and is closer to the actually state of anti-slide pile.