围桩平面布置及其内力分布的数值分析  

Numerical Analysis of Plan Arrangement and Internal Force of Surround Pile

作　　者：孔祥营[1] 郑明新[1] 刘伟宏[2] 董超[1] 

机构地区：[1]华东交通大学道桥与岩土工程研究所,江西南昌330013 [2]南通纺织职业技术学院建筑工程系,江苏南通226007

出　　处：《华侨大学学报（自然科学版）》2013年第2期192-196,共5页Journal of Huaqiao University(Natural Science)

基　　金：国家自然科学基金资助项目(51068006)

摘　　要：采用三维有限差分软件FLAC3D分析新型围桩-土耦合式抗滑结构,建立该新型抗滑结构的计算模型.通过分析不同围桩平面布置下的桩-土位移,确定围桩的合理平面布置,即6根围桩,呈正六边形布置(前、后两条边均垂直于滑坡推力方向),围桩中心距s=5d.在此平面布置下,分析并得出抗滑结构中各围桩的内力分布规律,即各围桩弯矩、剪力分布一致,中间和后排围桩受拉,前排围桩受压.The calculation model of new surround pile-soil coupling anti-slide structure was established and analyzed with the three-dimensional finite difference software FLAC3D. By analyzing on the displacement of pile and soil in the different plan arrangement, the rational arrangement is found, that is, six surround piles are arranged according to the regular hexagon, two forward and backward sides are perpendicular to landslide-thrust direction, and surround pile center distance s=5d. Under this arrangement, the internal force distribution of each surround pile is： bending moment and shear force distribution Of each surround pile are uniform, middle and backward surround piles sustain tension, and forward surround piles sustain precession.

关 键 词：围桩 抗滑结构 平面布置 内力分布 数值分析 

分 类 号：TU433[建筑科学—岩土工程]