倾斜PRC管桩组合支护结构在基坑工程中的应用
Application of composite inclined PRC pipe pile retaining structure in excavation engineering
柳瑶 1赖国梁 2陈国 2宋志 1宫立茂 2侯合强 2贾磊柱 1滕峰1
作者信息
- 1. 湖北中建三局建筑工程技术有限责任公司,武汉 430070
- 2. 中建三局集团有限公司工程总承包公司,武汉 430070
- 折叠
摘要
预应力混凝土(PRC)管桩具有抗弯刚度大、延性高及成桩可靠等特点,更适合于以受水平力为主的基坑工程;斜直交替及斜直组合双排桩支护体具有重力、刚架及斜撑效应,可以有效减小桩身水平变形及内力.以淤泥质地区倾斜PRC管桩基坑支护为例,结合设计方案比选、倾斜PRC管桩施工、基坑变形监测和分析、探讨倾斜PRC管桩组合结构的支护效果,结果表明倾斜PRC组合支护结构较好地控制了基坑变形,在淤泥质地区的应用效果良好.
Abstract
Prestressed concrete(PRC)pipe piles have the characteristics of large bending rigidity,high ductility and reliable pile formation,it is more suitable to used as supporting structures in the excavation engineering in which the pile mainly bears horizontal force.Inclined-vertical and inclined-vertical double-rows retaining structure has frame,supporting and gravity effect,which can effectively reduce the horizontal deformation and internal force of the pile.Taking the inclined PRC pipe pile excavation support in silt area as an example,according to the design selection,inclined PRC pipe pile construction,excavation deformation monitoring and analysis,the supporting effect of inclined PRC pipe pile composite structure was discussed,and the results show that it better controls the excavations deformation and has favorable application effect in the silt stratum.
关键词
预应力混凝土管桩/倾斜支护桩/基坑工程/监测Key words
prestressed concrete pipe pile/inclined retaining pile/excavation engineering/monitoring引用本文复制引用
基金项目
中建股份科技研发课题(CSCEC-2020-Z-10)
出版年
2024
NETL
NSTL
万方数据