摘要
在采用桩锚支护的深基坑中,经常会遇到因场内可用空间狭小而无基坑肥槽的问题,这就给基坑支护设计工作带来极大的困难。这种情况下,常规的桩锚支护体系受到挑战,一般设计会改用薄壁高强度的支护方案(如地连墙、内撑等),但是造价往往偏高。本文通过对传统桩锚支护技术进行改良,将腰梁及锚头全部嵌入桩内皮连线以外的桩间土位置,并采用特殊方法解决了腰梁与桩体间的有效传力技术;在不增加造价的情况下成功地解决了腰梁占用肥槽空间的技术难题。
In the pile anchor retaining structure of deep foundation excavation,there is no-fertilizer tank in foundation excavation often because of the narrow available field,which bring great difficulties to foundation excavation support design. In this case,the conventional pile anchor support system is challenged,general design will use the high strength thin wall supporting scheme,such as diagram wall,inner support etc. but the cost is relatively high. After the traditional pile anchor support technology was improved,the soill ocation outside of waist beam and anchor head are embedded to the pile endothelial connection between piles,and using a special method to solve the waist beam and pile body's effective force transmission technology. The cost of the successful solution of the problem of waist beam occupied fertilizer the groove space does not increase.
出处
《施工技术》
CAS
北大核心
2013年第S2期18-20,共3页
Construction Technology
关键词
深基坑
桩锚支护
无肥槽
安装
deep foundation excavation
pile anchor supporting
no-fertilizer tank
installation
