加筋效应对群桩相互作用系数的影响  

Analysis of piles reinforced effects on interaction coefficients of piles

作　　者：梁发云[1] 陈龙珠[2] 李镜培[1] 

机构地区：[1]同济大学地下建筑与工程系,上海200092 [2]上海交通大学土木工程系,上海200030

出　　处：《岩土力学》2005年第11期1757-1760,共4页Rock and Soil Mechanics

基　　金：国家自然科学基金项目(No.50478022);上海市教育发展基金会曙光计划项目(No.2001sg013)

摘　　要：群桩相互作用系数通常是采用平面应变模型进行分析,其研究方法具有较多的近似性。基于更为严格的虚拟桩模型,应用群桩相互作用的积分方程解答,以两桩相互作用的基本模型为例,研究加筋效应对群桩相互作用的影响。与弹性理论法和Mylonakis&Gazetas解答的对比表明,加筋效应对群桩相互作用系数有着较为明显的影响,并指出Mylonakis&Gazetas基于剪切位移法所得解答中存在的一些主要问题。The interaction coefficients of pile group were usually analyzed with plane strain model, which had too many assumptions. Based on a more rigorous model of imaginary piles, integral equation approach for piles group interaction was applied to analyze the effects of piles reinforcement in soil. To simplify the analysis, two piles model was given. Compared with the elastic theory method and Mylonakis ＆ Gazetas method, it shows that the effects of piles reinforcement in soil had obvious influence on the interaction coefficients of pile group. Finally, some defects of Mylonakis ＆ Gazetas method based on the shear force-displacement model are pointed out.

关 键 词：加筋效应 群桩 积分方程 相互作用系数 

分 类 号：TU473[建筑科学—结构工程]