TMYHJGCXB土木与环境工程学报Journal of Civil and Environmental Engineering2096-6717土木与环境工程学报编辑部中国重庆tmyhjgcxb-42-1-242096-6717(2020)01-0027-0810.11835/j.issn.2096-6717.2019.149TU433土木工程Civil Engineering基于粒子图像测速的锚板抗拔破坏机理试验研究Experimental study on uplift failure of anchor plate based on PIV technology倪钰菲NiYufei
Ni Yufei (1995-), main research interest: soil reinforcement technology, E-mail: niyufei@smail.nju.edu.cn
niyufei@smail.nju.edu.cn1乔仲发QiaoZhongfa2朱泳ZhuYong1朱鸿鹄ZhuHonghuzhh@nju.edu.cn13*南京大学 地球科学与工程学院, 南京 210023School of Earth Sciences and Engineering, Nanjing University, Nanjing 210023, P. R. China浙江省交通规划设计研究院, 杭州 310006Zhejiang Provincial Institute of Communications Planning, Design and Research, Hangzhou 310006, P. R. China南京大学(苏州)高新技术研究院, 江苏 苏州 215123Nanjing University High-tech Institute at Suzhou, Suzhou 215123, Jiangsu, P. R. China朱鸿鹄(通信作者), 男, 博士, 教授, 博士生导师, E-mail:zhh@nju.edu.cn
Zhu Honghu (corresponding author), PhD, professor, doctoral supervisor, E-mail: zhh@nju.edu.cn
The uplift of anchor plates is of anchor-soil interaction process. The investigation into soil deformation and failure mechanism around the anchor plate is important for uplift capacity prediction. In this paper, a series of anchor plate uplift tests based on particle image velocimetry (PIV) technique have been carried out. The deformation fields and failure modes of soil around anchor plates have been obtained under different soil densities and embedment depths of anchor plates. The results of PIV displacement fields show that for shallow anchor plates, the failure modes of the loose and the dense sand foundation are characterized by frictional cylinder and truncated cone, respectively. When the anchor plate is deeply embedded, a bulb-shaped influence zone formed above the inner anchor plate in the loose sand foundation, and the dense sand foundation develops curved failure surface. The results of PIV strain fields show that whatever the embedment depth of anchor plates, the failure plane in loose sand foundation is inclined at an angle 45°+φ/2 with respect to the horizontal, and the angle between the failure plane and the vertical plane in dense sand foundation is approximately φ/4. The conclusions provide references for developing prediction models of anchor uplift behavior.
锚板粒子图像测速拉拔特性破坏机制anchor plateparticle image velocimetry (PIV)uplift characteristicsfailure mechanism国家重点研发计划2018YFC1505104国家自然科学基金41722209苏州市科技计划SYG201717国家重点研发计划(2018YFC1505104);国家自然科学基金(41722209);苏州市科技计划(SYG201717)National Key Research and Development Program2018YFC1505104National Natural Science Foundation of China41722209Suzhou Science and Technology ProgramSYG201717National Key Research and Development Program (No. 2018YFC1505104); National Natural Science Foundation of China (No. 41722209); Suzhou Science and Technology Program (No. SYG201717)
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