陈国周. 三类锚杆受拉作用解析解的统一表达式[J]. 力学与实践, 2010, 32(2): 65-70. DOI: 10.6052/1000-0879-2009-335
引用本文: 陈国周. 三类锚杆受拉作用解析解的统一表达式[J]. 力学与实践, 2010, 32(2): 65-70. DOI: 10.6052/1000-0879-2009-335
CHEN Guo-zhou. GENERAL ANALYTICAL SOLUTION OF THREE TYPES OF ANCHORS UNDER TENSILE LOAD[J]. MECHANICS IN ENGINEERING, 2010, 32(2): 65-70. DOI: 10.6052/1000-0879-2009-335
Citation: CHEN Guo-zhou. GENERAL ANALYTICAL SOLUTION OF THREE TYPES OF ANCHORS UNDER TENSILE LOAD[J]. MECHANICS IN ENGINEERING, 2010, 32(2): 65-70. DOI: 10.6052/1000-0879-2009-335

三类锚杆受拉作用解析解的统一表达式

GENERAL ANALYTICAL SOLUTION OF THREE TYPES OF ANCHORS UNDER TENSILE LOAD

  • 摘要: 利用点荷载作用于半无限空间的Mindlin位移解,根据位移协调条件得出内锚式锚杆受拉作用的解析解,然后推导出全长粘结锚杆、压力型锚杆的解析解,建立了这3类锚杆受拉作用解析解的统一表达式. 利用所求得的解析解,研究了锚杆类型、土体弹性模量、锚杆孔径对锚杆应力分布的影响. 结果表明:(1) 3类锚杆的剪应力都是单峰值的曲线;(2)土体弹性模量增大,则锚杆剪应力峰值增大,但分布范围减小;(3)锚杆孔径增大,则锚杆剪应力峰值减小,但对其分布范围几乎没有影响.

     

    Abstract: In order to obtain a general analytical solution of threetypes of anchors, an analytical solution of inner-bonded anchor undertensile load is obtained by assuming displacement consistency between anchor and soil,based on Mindlin solution of force at a point in the interior of asemi-infinite solid. Then the analytical solution is extended to thefull-bonded anchor and compression anchor. Further, a general analyticalsolution of the three types of anchors under tensile load is obtained. Theeffect of anchor type, soil elastic modulus and anchor diameters on sheardistribution between anchor and soil is evaluated by using the generalanalytical solution. The results show that (1) there is only one stress peakalong the shear distribution curve of the three types of anchors; (2)as the elastic modulus of soil increases, the magnitude of shear increases whilethe distribution length of shear decreases; (3) as the anchor diameter increases,the magnitude of shear decreases while the distribution length of shearis almost not changed.

     

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