摘要
为研究深基坑工程中围护桩在不同水平间距和直径下的位移变形,以沈阳地铁9号线和10号线换乘车站深基坑工程为例,利用理正深基坑结构设计软件,对深基坑围护结构的变形进行了分析。结果表明,增大桩间距与减小桩直径均会增大围护桩的位移变形。综合考虑安全与成本,采用增大桩间距的方法对围护桩进行优化。将桩间距由1.4 m增加到1.6 m,桩体最大位移由8.51 mm增加到8.89 mm,增大其结果与原方案相比不会造成位移变形过大,同时围护桩总数量减少了14根,节约了施工成本。
In order to study the deformation of piles in deep foundation pit withdifferent horizontal spacing and diameter,taking the deep foundation pit of a transfer station of Shenyang Metro Line 9and Line 10 as an example andusing the Lizheng deep foundation design software,the deformation of the retaining structure of the deep foundation pit wereanalyzed. The results show that increasing the pile spacing and reducing the pile diameter can both increase the deformation of the retaining piles.Considering safety and cost,increasing the spacing of piles is the optimized option. If the pile spacing is increased from 1. 4 m to 1. 6 m,the maximumdisplacement of the pile will beincreased from8. 51 mm to 8. 89 mm,which will not result in too large deformation compared with the original plan,the numberof retaining piles will decrease by 14,and construction cost will be saved.
出处
《广西大学学报（自然科学版）》
CAS
北大核心
2016年第1期128-133,共6页
Journal of Guangxi University（Natural Science Edition）
基金
住建部科技资助项目(2014-K2-019)
关键词
地铁
深基坑
围护桩
优化
metro
deep foundation pit
retaining pile
optimization
