摘要
软岩嵌岩桩作为一种基础形式 ,目前国内研究较少。文章探讨了国内外对本课题的一些研究 ,分析了侧阻力的激发机理 ,详尽地阐述了嵌岩段侧阻力的影响因素 ,并且讨论了侧阻力的计算公式 ,分析表明岩石的强度、桩岩界面的粗糙情况、岩石的模量、岩石的初始应力等都对侧阻力有影响。研究表明 ,嵌岩段侧阻力受桩表面的法向刚度所控制 ,嵌岩段的单位极限侧阻力受嵌岩比的影响不大 。
As one of foundations, soketed pile in weak rock is studied seldom in our country. In this paper ,some of the developments about side resistance of socketed pile in weak rock are presented. Test of constant normal stiffness indicates that side resistance is controlled by normal stiffness of pile surface . This paper also analyzes the responsing mechanism of side resistance.Influence factors of side resistance are discussed in detail. These factors include rock strength and roughness of the socket wall and rock mass modulus and original stress of rock . This paper also discusses the formula of side resistance . The research showes the ratio of rock-socketed depth to the diameter of pile ratio don't affect the side resistance in weak rock.The formula of the norm (JGJ94-94)can't be used in socketed pile in weak rock.
出处
《东华理工学院学报》
2004年第3期260-264,共5页
Journal of East China Institute of Technology
关键词
软岩
岩石
嵌岩桩
国内外
影响
规范
单位
计算公式
文章
socketed pile in weak rock
normal stiffness
side resistance
influence factors
