梅花型布置双排抗滑桩合理桩位研究  

Study on Reasonable Location of Quincuncial Layout Double row Anti slide Pile

作　　者：赵晓坷 雷用[1] 胡明[1] 张泽健[1] 

机构地区：[1]后勤工程学院军事土木工程系,重庆401311

出　　处：《后勤工程学院学报》2015年第2期11-16,共6页Journal of Logistical Engineering University

摘　　要：结合滑坡推力作用下梅花型布置双排抗滑桩成拱机理对其合理桩位进行研究。参考前人对单排桩合理桩间距的研究成果,运用理论推导和数值模拟得到相邻前后排桩桩间土拱跨度的控制表达式。同时,考察了桩间距和桩排距对土拱效应的影响,并绘制了lx′-ly′区间分布图。利用双排桩在滑坡上的有效影响面积,结合区间分布图推导出合理的桩间距和桩排距。结果表明,合理的桩间距和桩排距能够使前后排桩桩间形成直接土拱,并催生间接土拱,进而使前后排桩相互配合,共同起到支挡作用。Based on the analysis of the arching mechanism under landslide thrust of quincuncial layout double-row anti-slide piles,the reasonable pile location is studies. Based on predecessors＇ research of the reasonable pile spacing of single rank, the numerical simulation and theoretical derivation are used to obtain the control expression of the soil arching span between adjacent front and rear piles. At the same time, research the influences of pipe spacing and row spacing on soil arching effects, and draw lx′- ly′ relationship graph. By using effective impacts on double row piles in landslide area and combining interval distribution graphs, the reasonable pile spacing and row spacing is deduced. Research shows that the reasonable pile spacing and row spacing can form the direct soil arch between adjacent front and rear piles and create the indirect soil arch. Therefore, the double-row anti-slide piles can work together to perform retaining function.

关 键 词：梅花型布置 双排抗滑桩 土拱效应 桩间距 桩排拒 

分 类 号：TU473.12[建筑科学—结构工程]