Study On Mechanism Of Bolt Reinforcement And It's Application To Slope Project

Based on a lot of documents, the thesis acquires some achievements by the way of theory analysis, laboratory test and numerical simulation as follows:(1) Beginning with the analysis of bolt working and mechanical characteristic, this thesis obtains the theoretical stress-distribution solution of pulling force intensive and dispersive style prestressed-anchor, pressure force intensive and dispersive style prestressed-anchor, then the comparison analysis of different distribution characteristic is done.(2)The influence factor of bolt reinforcemental effect is systematically researched, and a theoretical formula of calculating the bolt-consolidation length is presented in this thesis forced mechanism of bolt in the different working circumstance. In terms of point-anchorage and fully-anchorage, the consolidation effect is compared and analyzed.(3)About the Wangliangshi economical kiln areola landslide project, consideration of the slope type and construction convenience, this thesis presents the consolidation scheme of using prestressed-anchor. The most dangerous slipping face is calculated by the limit balance method, and the design scheme of prestressed-anchor reinforcement is presented. The stability factor of consolidated slope is calculated by the FEM strength reduction method. The calculation result indicates that the slope plastic area along the slipping face uninterrupted expanding to top of slope by the reduction of soil strength parameters, and the most dangerous slipping face calculated by strength reduction method is similar to the result calculated by limit balance method, the slope stability factor is defined as 1.35 after many times calculation. According to the specification of national standard, the result of calculation shows that the design scheme is scientific and reasonable.