基于桩-土作用效应的组合式抗滑桩结构研究  

Structure of Combined Anti-Sliding Piles Based on Pile-Soil Interaction

作　　者：王羽[1] 柴贺军[2] 吴祖松[1] 刘丽[1] 王晓东[1] 

机构地区：[1]重庆交通大学国际学院,重庆400074 [2]招商局重庆交通科研设计院有限公司,重庆400067

出　　处：《重庆交通大学学报（自然科学版）》2014年第1期90-93,共4页Journal of Chongqing Jiaotong University(Natural Science)

基　　金：交通运输部建设科技项目(2013318814180);地质灾害防治与地质环境保护国家重点实验室开放基金资助项目(SKLGP2010K010)

摘　　要：在对现有双排桩计算分析研究的基础上,提出了一种新的考虑桩土作用效应的平面杆系有限单元门型桩分析模型。此模型用弹簧来模拟受荷段土体作用,接触单元来模拟锚固段桩土间的协调变形,通过水平弹簧模拟桩间土的薄压缩层,优化门架桩土压力分布状态,并将此计算模型应用于三峡库区一滑坡支护工程中,验证了该模型的合理有效性。实例计算表明:所提出的计算分析模式是合理可靠的。Aiming at the deficiencies of current portal anti-sliding piles, a new plane finite element model considering the pile-soil interaction was proposed based on the current model of calculating double-row piles. In this model, rings were used to simulate the influence of the loading soil and the touch elements were used to simulate the displacement between pile and soil in the anchored section. The part of soil between double-row piles was regarded as a thin compressible layer to optimize the stress distribution of the pile-soil. A case study relating the slide supporting engineering project in Three Gorges Reser- voir was conducted for the model validation. And it shows that the proposed analysis mode and calculation model are reason- able and reliable.

关 键 词：门型抗滑桩 支挡结构 有限元法 结构型式 计算模型 

分 类 号：TU472[建筑科学—结构工程]