The Study On The Prepressed Anchor Lattice Beam's Force Characters And Designing Method

The prestressed anchor and reinforced concrete lattice beams is an new active reinforcement method,which combind lattice beams with anchor reinforcement engineering.Because of the interface which the reinforced concrete lattice beams contact with the slope is great,and the prestressed anchor which connect the lattice beams is used for deep reinforcement.They fall together, the prestressed anchor and reinforced concrete lattice beams can make use of deep reinforcement and low slope reinforce.Comparing with the traditional gravity retaining wall,the prestressed anchor and reinforced concrete lattice beams blongs to an active reinforcement method.It can improve slope stress state and initiate it's body's self-stability by passing the anchor's huge anchoring force to the slope body through the reinforced concrete lattice beam.But the analysis of this structure is very complex. But atpresent,it has no relative criterion about the design and count of the prepressed anchor and lattice beams,and the department of design usually use experience comparison or use the anchor designing method.They don't consider the mutual effect that lattice beams and anchor combine together in designing calculation,even the construction program and the actual stress condition .In recent years, the prestressed anchor and reinforced concrete lattice beams are applied in the slope reinforcement engineering more and more.This article discuss the design methods and stress character of the prestressed anchor and lattice beams.In this article,firstly introduce the development and application in engineering of the prestressed anchor and lattice beams.Then according to the experice of project,discussing some modles of lattice beams.On the basis of people's conculating experice,a new design method that take the prestressed anchor and lattice beams as a mutual integer has been put forward. At the same, the detail explaination has been showed.At last,the article makes use of the software of finite element to analyse the number model that is builded by MIDAS/GTS.The article build three-dimensiona number model by soil,the prestressed anchor and lattice beams and analyse the rule of displacement,stress,strain, sensitivity of soil and the state of lattice beams.Then it optimize the design which is used for slope reinforcement engineering and expect providing useful consult for similar project.