摘要
基坑开挖过程中很多不确定因素会导致过大变形,因而围护结构应该根据实时监测数据进行调整。以某基坑工程为例,原拟设3道水平钢筋混凝土支撑,因受工期限制,最终减为2道。根据现场反馈信息及时调整施工技术措施,并综合采取多种约束围护桩水平位移的措施。结果表明,这些措施可有效控制围护桩的水平位移及保证围护结构整体的稳定性,效果显著。
A lot of uncertain factors in the excavation process will lead to excessive deformation,thus the design of deep foundation excavation should be adjusted dynamically according to the real-time monitoring data.This paper presents a case study on dynamic design of foundation excavation.The original design adopted three levels of reinforced concrete supports,but the final design uses two layer supports for the reason of construction period.In the period of construction,designers adjust construction technology timely based on feedback information from field and use a variety of restraint measures aiming at controlling the horizontal displacement of retaining piles.The result of construction shows that these measures are feasible and effective.
出处
《施工技术》
CAS
北大核心
2016年第13期37-40,共4页
Construction Technology
基金
2011年江西省协同创新中心项目(交通基础设施环境与安全)
江西省落地计划成果转化项目(KJLD4036)
关键词
地下工程
基坑
围护结构
变形
动态控制
监测
underground
foundation excavation
retaining structure
deformation
dynamic control
monitoring
