极限状态下单排联合抗滑桩桩间距计算  

Calculation of single rank of anti-sliding piles spacing in limit state

作　　者：范登政 林斌[1] 李怀鑫 陈士威 FAN Deng-zheng;LIN Bin;LI Huai-xin;CHEN Shi-wei(School of Civil Architecture,Anhui University of Science & Technology,Huainan 232001,China)

机构地区：[1]安徽理工大学土木建筑学院,安徽淮南232001

出　　处：《河南城建学院学报》2020年第1期53-57,共5页Journal of Henan University of Urban Construction

基　　金：高校博士点专项基金资助项目(200803610004)。

摘　　要：为得到极限状态下单排联合抗滑桩的合理桩间距,基于桩间土拱形成的机理及拱厚与滑动面之间的关系,根据Mohr-Coulomb强度准则及桩间静力平衡条件,推导出单排联合抗滑桩桩间距的上限值和下限值。参数分析表明:利用该种单排联合方式布桩,其桩间距随内摩擦角的增加呈指数形式增加、随黏聚力及单排联合桩宽度的增加呈线性增加,与单根桩方式布桩相比,该方法能够起到很好的阻滑作用,在此基础上可适当增加桩间距。In order to obtain the reasonable pile spacing of single rank of anti-sliding piles in the limit state,according to Mohr-Coulomb strength criteria and the static balance conditions between piles,the upper and lower limits of single rank of anti-sliding piles spacing are derived on the base of mechanism of formation of the soil arch between piles and the relationship between arch thickness and sliding surface.The parameter analysis shows that the pile spacing increases exponentially with the increase of the internal friction angle,and linearly increases with the increase of sticky force and the width of single rank of anti-sliding piles,in addition,compared with the single pile-type pile,the single rank of anti-sliding piles can play a good role in resisting slip,and on this basis,the pile spacing can be increased appropriately.

关 键 词：道路工程 单排抗滑桩 土拱效应 桩间距 

分 类 号：TU473.1[建筑科学—结构工程]