深厚自重湿陷性黄土地区夯实水泥土桩试验研究  

EXPERIMENTAL STUDY ON TAMPED SOIL-CEMENT PILES IN DEEP-THICK COLLAPSIBLE LOESS REGION

作　　者：王建平[1] 雒成焱[1] 王剑[1] 李金平 

机构地区：[1]西安建筑科技大学土木工程学院,西安710055 [2]青岛易境工程咨询有限公司,山东青岛266000

出　　处：《工业建筑》2013年第S1期501-504,共4页Industrial Construction

基　　金：陕西省自然科学基金项目(2010JM7006);陕西省教育厅专项科研基金项目(11JK0959)

摘　　要：对渭北地区深厚自重湿陷性黄土场地的夯实水泥土桩复合地基的合理桩距进行了试验研究。通过对比锤击沉管成孔法和螺旋钻成孔法在不同桩间距时的桩间土挤密系数以及湿陷性消除程度,得出在该类场地采用沉管成孔时桩间距不能大于850 mm的结论,并通过实际工程进行验证,取得了良好的效果,对类似工程有参考和借鉴作用。An experimental study was done on reasonable pile distance of tamped soil-cement pile composite foundation in deep-thick collapsible loess sites located in Weibei Area.By comparing the method of hammer pipe sunk into a hole and auger hole in pile spacing soil compaction coefficients and the degree of collapsibility elimination of different pile distance,it was conclud that the pile distance could not be larger than 850 mm when adopting the method of pipe sunk into a hole in such area.And it was achieved good results through verifying practical projects.The conclusions of this study way be a reference for similar projects.

关 键 词：夯实水泥土桩 桩间距 挤密系数 湿陷性 

分 类 号：TU473.1[建筑科学—结构工程]