摘要
针对不同工况条件下冠梁对悬臂式排桩围护结构变形的影响,采用数值分析和现场监测相结合的手段进行分析。结果表明:冠梁对悬臂式排桩围护结构变形的约束效果显著;随着基坑开挖深度增加,冠梁的约束作用显著增大,开挖到一定深度时必须通过设置冠梁来控制围护结构变形;增加冠梁约束后,围护结构变形对基坑形状变化较敏感,在弧形基坑中冠梁的约束作用更加显著。
The influence of crown beam on the deformation of retaining structure of cantilever row piles under different conditions is analyzed by means of combination of numerical analysis and field monitoring.The results show that crown beam can improve the deformation restraint of cantilever row pile retaining structure significantly.With the increase of excavation depth of foundation pit,the restraint effect of crown beam becomes more and more significant.When excavation reaches a certain depth,the deformation of enclosure structure must be controlled by setting crown and beam.After the setting of crown beam restraint,the deformation of retaining structure is more sensitive to the shape change foundation pit,and the restraint effect of crown beam is more significant in arc foundation pit.
作者
袁宗义
余超
万先逵
冯金
石钰锋
YUAN Zong-yi;YU Chao;WAN Xian-kui;FENG Jin;SHI Yu-feng(CCCC-FHDI Engineering Co.,Ltd.,Guangzhou 510230,China;Jiangxi Key Laboratory of Infrastructure Safety Control in Geotechnical Engineering,East China Jiaotong University,Nanchang 330013,China;Nanchang Rail Transit Group Co.,Ltd.,Nanchang 330038,China;China Railway Fourth Bureau Group Fifth Engineering Co.,Ltd.,Jiujiang 332000,China)
出处
《水运工程》
北大核心
2019年第9期61-65,共5页
Port & Waterway Engineering
基金
国家自然科学基金地区科学基金项目(51768020)
关键词
弧形基坑
冠梁
排桩
变形分析
arc foundation pit
crown beam
row pile
deformation analysis
作者简介
袁宗义(1979—),男,高级工程师,从事市政公路方面的设计与管理工作。
