长江科学院院报2017，Vol.34Issue(6)：108-113,118,7.DOI:10.11988/ckyyb.20160289
格构锚固体系承载机理及破坏模式的试验研究
Model Test on Mechanical Properties and Failure Mode of Lattice Framed Anchor System
摘要
Abstract
The mechanical properties and failure modes of lattice framed anchor system in preventing landslide are investigated through large-scale physical model test on the interaction between anchor system and landslide.The resistance of soil under lattice girder,the internal forces,displacements and deformations of lattice girder are obtained.Results show that under the actions of landslide thrust and anchorage force,the lattice girder as a whole is subjected to forces in an "S" shape,which means that the beam part below node was subjected to tension,the above node compression,and below mid-span of the beam compression,and above mid-span tension;with the increase of load and the gradual destruction of landslide model,the node of lattice girder bends towards the inside of the slope,the mid-span bends towards the outside.Moreover,the failure modes of lattice framed anchor system are summarized into four types:bending failure in an "S" shape in the mid-span,cataclastic failure of node caused by compression,extrusion of soil between girders,and extrusion of soil above girders,among which plastic bending failure is a main failure mode.关键词
格构锚固体系/物理试验研究/滑坡承载机理/格梁/破坏模式Key words
lattice framed anchor system/physical model test/bearing mechanism of landslide/lattice girder/failure mode分类
建筑与水利引用本文复制引用
张涛,石胜伟,谢忠胜..格构锚固体系承载机理及破坏模式的试验研究[J].长江科学院院报,2017,34(6):108-113,118,7.基金项目
中国地质调查局二级资助项目(DD20160278) （DD20160278）
中国地质调查局工作资助项目(1212011220171) （1212011220171）
