基于Mindlin基本解的压力型锚索弯曲锚固段剪应力分析  

SHEAR STRESS ANALYSIS OF BENDING ANCHORAGE SECTION OF PRESTRESSED ANCHOR CABLE BASED ON MINDLIN SOLUTION

作　　者：叶红[1,3] 陈燕平[2,3] YE Hong;CHEN Yanping(School of Civil Engineering and Architecture,Wuhan University of Technology,Wuhan 430070,China;School of Transportation Engineering,Wuhan Technical College of Communications,Wuhan 430072,China;School of Civil Engineering,Wuhan University,Wuhan 430065,China)

机构地区：[1]武汉理工大学土木工程与建筑学院,武汉430070 [2]武汉大学土木建筑工程学院,武汉30072 [3]武汉交通职业学院交通工程学院,武汉430065

出　　处：《工业建筑》2020年第6期105-110,共6页Industrial Construction

基　　金：国家自然科学基金项目(51374163);湖北省自然科学基金项目(2014CKB499);湖北省教育厅科学技术研究计划指导性项目(B2018492);武汉交通职业学院科研创新团队建设项目(CX2018B07)。

摘　　要：为更精确地研究压力型锚索的锚固机理,考虑锚索孔道弯曲现象,根据Mindlin基本解,结合平面应力状态的应力分析,推导了压力型锚索弯曲锚固段内外曲线上任意点剪应力的理论解。通过借鉴已有的研究成果进行算例分析,结果表明:内曲线上的剪应力峰值较外曲线上的剪应力峰值大,直线上的剪应力峰值较内曲线上的剪应力峰值大,预应力荷载和曲率半径均与曲线上的剪应力分布曲线及剪应力峰值成正相关关系。In order to study the anchorage mechanism of pressure cables more accurately,considering the anchor cable tunnel to be bent,based on the basic solution of Mindlin and the stress analysis of the plane stress state,the theoretical solution of shear stress at any point in the internal and external curves of the pressure anchor cable bending anchorage section were derived.A case was analyzed based on the existing research results,the results showed that the peak shear stress on the internal curve was larger than that on the external curve,the peak shear stress on the straight line was larger than that on the internal curve,and the prestressed loads and the radius of curvature were positively correlated with the shear stress distribution curve and the peak shear stress.

关 键 词：压力型锚索 孔道弯曲 MINDLIN解 平面应力状态 锚固机理 

分 类 号：TU476[建筑科学—结构工程]