2016年7月上 施工技术 第45卷第13期 CONSTRUCTION TECHNOLOGY 37 D0I:10.7672/5js2016130037 深基坑围护结构变形动态控制研究* 徐良英，许洋2，徐长节2 (1.杭州市城东新城建设投资有限公司，浙江杭州310000：2.华东交通地大学土木建筑学院，江西南昌330013) [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. [关键词]地下工程；基坑；围护结构；变形；动态控制；监测 [中图分类号]TU753 [文献标识码]A [文章编号]1002-8498(2016)13-0037-04 Study on Dynamic Displacement Control of Retaining Structure in Deep Foundation Excavation Xu Liangying' Xu Yang2 Xu Changjie2 (1.Chengdong Xincheng Construction Investment Co.Lad.Hangzhou Zhejiang 310000 China;2.School of Ciril Engineering and Architecture East China Jiaotong Unirersity Nanchang Jiangxi 330013 China) Abstract: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. Key wo...
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