岩土工程学报2011，Vol.33Issue(5)：803-807,5.
锚杆抗滑桩破坏模式的试验研究
Experimental study on failure modes for anti-slide piles with a single anchor
摘要
Abstract
Compared with common anti-slide piles, the anchor on the top of a new kind of pill anti-slide piles with a single anchor can greatly reduce their internal forces, but the calculation method is not perfect at present.Thus the experimental study on the anti-slide piles with a single anchor is necessary.The results from experiments on failure modes for the anti-slide piles with a single anchor are introduced.The tests are conducted in a self-made model box.There are four model piles with anchors on their top, and loading method is heaped load.In order to obtain the pile deformation and stress, a number of earth pressure boxes, strain gages and displacement meters are arranged inside the model.From the angle of the pile deformation and stress, the failure point lies above the sliding surface, and breaking bending moment is mainly supplied by the pulling forces of anchors, the soil pressure from the back of the piles as well as the soil resistance from the front of the piles.From the changing curve of the anchor, the stress is from the combinations of bending and axial tensile, not completely in axial tensile condition.The range of stress is mainly around 40 cm at both sides of slipping surface with stress concentration of 20 cm at both sides.From the analysis of strain, the anchor steel is the first in the plastic yield state, and the pile body steel follows.In addition, there is a certain recovery of deformation for pile body and anchor steel under the forward tension condition after unloading.关键词
锚杆抗滑桩/试验研究/破坏模式/塑性弯折破坏Key words
anti-slide pile with a single anchor/ experimental/ failure mode/ plastic bending failure分类
建筑与水利引用本文复制引用
李寻昌,门玉明,张涛,刘洪佳,严静平..锚杆抗滑桩破坏模式的试验研究[J].岩土工程学报,2011,33(5):803-807,5.基金项目
国家自然科学基金项目(40272116) （40272116）
国土资源大调查项目(1212010914021) （1212010914021）
中央高校基本科研业务费专项(CHD2010JC058)长安大学基础研究支持计划专项基金资助 （CHD2010JC058）
西部矿产资源与地质工程教育部重点实验室资助 （）
