岩土力学2012，Vol.33Issue(1)：179-184,190,7.
基于Hoek-Brown破坏准则的浅埋条形锚板抗拔力上限分析
Upper bound solution of ultimate pullout capacity of strip plate anchor based on Hoek-Brown failure criterion
摘要
Abstract
The existing studies of ultimate pullout capacity of plate anchor which employed linear and nonlinear Mohr-Coulomb failure criterion have been achieved in sand. However, the Mohr-Coulomb failure criterion is unsuitable for calculating the ultimate pullout capacity of plate anchor in rock foundation. Based on the Hoek-Brown failure criterion, a curved failure mechanism is constructed and the expression of pullout capacity of plate anchor is derived in the framework of upper bound theorem of limit analysis. The upper bound solutions of ultimate pullout capacity and failure surface for plate anchor are obtained with the help of variational calculation. To evaluate the validity of this method, the ultimate pullout capacity of curved failure mechanism is calculated by using equivalent parameters of Mohr-Coulomb criterion when parameter 5=1. The solutions are compared with the results presented in the existing literatures. The good agreement between the results of curved failure mechanism and the solutions computed by linear multiple blocks failure mechanism shows the upper bound solutions calculated by curved failure mechanism is effective. According to the results of parameters analysis, both the ultimate pullout capacity and failure surface decrease with the increase of rock parameter B when other parameters are fixed.关键词
Hock-Brown破坏准则/上限定理/曲线型破坏机制/极限抗拔力Key words
Hoek-Brown failure criterion/upper bound theorem/curved failure mechanism/ultimate pullout capacity分类
建筑与水利引用本文复制引用
黄阜,杨小礼,赵炼恒,黄戡..基于Hoek-Brown破坏准则的浅埋条形锚板抗拔力上限分析[J].岩土力学,2012,33(1):179-184,190,7.基金项目
国家自然科学基金资助项目(No.51178468) （No.51178468）
湖南省自然科学基金资助项目(No.09JJ1008) （No.09JJ1008）
中南大学博士研究生学位论文创新项目(No.2010bsxt07). （No.2010bsxt07）
