邻近水平推力斜拱桩基对深基坑围护结构变形影响研究  

Influences of Adjacent Horizontal Thrust Inclined Arch Pile Foundation on Deformation of Deep Foundation Pit Retaining Structure

作　　者：缪昊 刘成禹[1,2] MIAO Shenghao;LIU Chengyu(College of Environment and Recourses,Fuzhou University,Fuzhou,Fujian 350116,China;Fujian Provincial University,Engineering Research Center of Geological Engineering,Fuzhou University,Fuzhou,Fujian 350116,China)

机构地区：[1]福州大学环境与资源学院,福建福州350116 [2]福州大学地质工程福建省高校工程研究中心,福建福州350116

出　　处：《水利与建筑工程学报》2018年第6期111-116,154,共7页Journal of Water Resources and Architectural Engineering

基　　金：国家自然科学基金项目(41272300)

摘　　要：为分析邻近水平推力斜拱桩基对深基坑围护结构变形的影响,采用MIDAS/GTS岩土有限元软件,重点分析了基坑与斜拱桩基承台边缘净距和斜拱加载时基坑开挖深度对深基坑围护桩变形的影响规律。数值分析结果表明,随着基坑与斜拱桩基承台边缘净距的增大,围护桩最大水平位移逐渐减小,水平位移最大值位置的深度逐渐增大,斜拱桩基对围护桩水平位移的影响深度逐渐减小;随着斜拱加载时基坑开挖深度的增大,围护桩最大水平位移逐渐减小,斜拱加载引起的围护桩水平位移增量最大值位置的深度也逐渐减小。In order to analyze the influences of adjacent horizontal thrust inclined arch pile foundation on deep foundation pit retaining structure deformation,the net distance between the foundation pit and the edge of the inclined arch pile foundation and the depth of excavation during inclined arch loading are considered to study the influence on the retaining pile deformation by using Midas GTS finite element software.The results of numerical analysis show that the increase of the net distance between the foundation pit and the edge of the inclined arch pile foundation,the maximum horizontal displacement of retaining pile is gradually decreased,the depth of the maximum horizontal displacement of the retaining pile is gradually reduced,the influence depth of inclined arch pile foundation on horizontal displacement of retaining pile reduces gradually.With the increase of the depth of foundation pit excavation,the maximum horizontal displacement of foundation pit is gradually decreased,the depth of the maximum of horizontal displacement increment caused by inclined arch loading also decreases gradually.

关 键 词：深基坑 斜拱桩基 水平推力 水平位移 

分 类 号：TU473[建筑科学—结构工程]