The Mechanism Of Pre-Stress Anchored Pile And Application In Landslide Treatment

It is one of key problems that the high-steep slopes remediate will be inevitably met during the construction of road in the western china, which resolved reasonably is one of cruxes to ensure the road construct smoothly and work smoothly. The retaining structures to remediate the high and steep slopes such as retaining wall, retaining piles, anchor and the anti-slide piles with pre-stressed anchor and so on, are often be applied in the projects of the high and steep slopes during the construction of highway from now on, one of which that the piles with pre-stressed anchor have been proved to be more effective to the problem with the practice. The big complexity of the interaction between the retaining structure system and the slope system that results in the design methods and theory of the piles with pre-stressed anchor still unreasonable to the practice.First, the mechanic characteristics of the anti-slide piles and the pre-stress anchored structure are brought into account, the same as the calculation ways. Meanwhile, the advantage and disadvantage of the calculation ways and a serial questions existed in the projects are systemically discussed. Farther the mechanism of the anti-piles with pre-stress anchored is analyzed. Based on the assumption that the consistent deformation of the system of the anti-piles with pre-stress anchored, the internal force of the anti-piles and the anchors, the pre-stress of the anchors and the free length of the anchors are deeply discussed. The retaining mechanism is researched from the factors the reasons of application, mechanical characteristics on the condition that the slope stability is analyzed on the base of digital model, at the same time, analyzing the design principle and methods of the anti-slide piles with pre-stressed anchor and bringing forward the concept of dynamic design according to the characteristics of construction of the anti-slide piles with pre-stressed anchor anchors. In addition, the optimum assembled design of the anti-slide piles with pre-stressed anchor have been set forth for the reason of more economical during the construction.The key problems and construction attentions and monitoring methods of construction are analyzed in details in the paper because of the complication of construction and the demands of construction technique. An example is given in the end of the paper, which shows the viewpoint that the anti-slide piles with pre-stressed anchor applied to remediate the high and steep high slope is an effective and economical method.