不同土质中支盘桩基础合理盘距和桩距研究  

Research on the reasonable plate spacing and pile spacing of branch pile foundation in different soils

作　　者：卢成原[1] 黄瑜明 

机构地区：[1]浙江工业大学建筑工程学院,浙江杭州310014

出　　处：《浙江工业大学学报》2015年第2期232-236,共5页Journal of Zhejiang University of Technology

基　　金：浙江省自然科学基金资助项目(Y1080440)

摘　　要：设计两组室内模型试验来研究不同土质中支盘桩单桩的合理盘间距.对试验结果分析得出:双盘单桩的承载力随盘距的增加有不同程度的增大,但并不呈线性增加;盘距的不同关系到盘体承载力的发挥,同时上下盘的发挥有较明显的时间效应;桩周不同土质性状影响着支盘桩单桩两盘体的合理间距取值.支盘桩群桩随桩距的增大,群桩效应逐渐减小,其承载力不断增大,当达到一定桩距时可以近视忽略群桩效应的影响,群桩的承载力可取单桩承载力的叠加值,但该合理桩距在不同土质中是不同的.Two sets of indoor model tests were designed to study the reasonable plate spacing of a single branch pile in different soils. The test results showed that the bearing capacity of a single pile with double plates increases with the increase of the plate spacing in a nonlinear manner. The bearing capacity of plates is closely related to the plate spacing and exhibits an obvious time effect. The reasonable plate spacing of a single branch pile is dependent on the properties of soil. As the pile spacing increases, the pile group effect decreases gradually but the bearing capacity increases. When the pile spacing reaches a certain value, the pile group effect can be neglected and the bearing capacity is simply obtained by summing those of various single piles. The reasonable pile spacing is also dependent on the properties of soil.

关 键 词：支盘桩 盘距 桩距 模型试验 

分 类 号：TU473.1[建筑科学—结构工程]