考虑加筋效应的抗拔群桩变形解析解

发布时间：2018-03-11 11:52

本文选题：弹性理论　切入点：抗拔群桩　出处：《哈尔滨工程大学学报》2017年10期 　论文类型：期刊论文

【摘要】：现有的抗拔群桩变形计算方法具有理论假定的近似性,而且不能充分考虑群桩基础中各桩基相互加筋效应的影响,造成抗拔群桩变形计算理论落后于抗拔群桩的工程实践。为解决这一问题,本文基于薄壁同心圆筒剪切变形模式和弹性理论,推导得到能考虑群桩基础中桩基相互加筋效应的抗拔群桩变形的解析解。将解析解的计算结果与有限元分析结果、模型试验数据进行对比,结果表明理论解答能较好地计算抗拔群桩的变形。本文方法计算群桩相互作用符合群桩系统的工程实际情况,因此本文理论方法具有很高的理论和实际工程价值,在大规模抗拔群桩的变形分析和设计实践中具有很好的应用前景。
[Abstract]:The existing methods for calculating the deformation of uplift pile have the approximation of theoretical assumption, and the influence of the reinforcement effect of each pile foundation in the pile group foundation can not be fully taken into account. In order to solve this problem, this paper bases on the shear deformation model of thin-walled concentric cylinder and elastic theory. In this paper, the analytical solution of the deformation of uplift group pile considering the reinforcement effect of pile foundation in pile group foundation is derived. The calculated results of the analytical solution are compared with the results of finite element analysis and the model test data. The results show that the theoretical solution can be used to calculate the deformation of anti-uplift pile. The calculation of pile group interaction in this paper accords with the engineering practice of pile group system, so the theoretical method in this paper has high theoretical and practical engineering value. It has a good application prospect in deformation analysis and design practice of large scale uplift pile.
【作者单位】：上海大学土木工程系;
【基金】：国家自然科学基金项目(11072143) 交通部课题(D.11-0118-11-003)
【分类号】：TU473.1

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