岩土工程学报2012，Vol.34Issue(9)：1734-1739,6.
砂土中锚板的抗拔机理与承载力计算模型研究
Uplifting behavior and bearing capacity of plate anchors in sand
摘要
Abstract
The deformation mechanism of sand around plate anchors during uplifting is essentially important for the reliable prediction of their ultimate bearing capacity in sand. First, a series of model tests are conducted. The digital image correlation method is used to measure the sand deformation fields during uplifting of anchors. The deformation fields show that a pair of shear zones accompanied by dilatancy are formed. The stress level, friction angle and dilatancy angle control the shape of the failure surface, thus affecting the bearing capacity of the plate anchors in sand. A prediction model for uplift force is developed based on the sand deformation mechanism around an uplifting plate anchor. The relationship among the dilatancy angle, the relative density and stress level established by Bolton is introduced to develop the theoretical formula. The comparison between the theoretical and test results is conducted. The theoretical results show good agreement with the test results.关键词
锚板/变形场/极限承载力/计算模型Key words
plate anchor/deformation field/ultimate bearing capacity/computational model分类
建筑与水利引用本文复制引用
张昕,乐金朝,刘明亮,刘汉东..砂土中锚板的抗拔机理与承载力计算模型研究[J].岩土工程学报,2012,34(9):1734-1739,6.基金项目
河南省岩土力学与结构工程重点实验室开放基金项目 （）
