锚固体锚根段的传力机理试验研究

基于理论分析、模型试验与曲线拟合方法，初步研究了由预应力钢锚索、水泥砂浆和混凝土体三种异质材料粘结复合而成的锚固体内锚根段界面性状、传力机理和界面应力；建立了钢锚索与水泥砂浆之间界面上作用应力表达式、径向开裂准则与滑移条件以及剪应力与位移之间关系式，提出了混凝土与水泥砂浆粘结界面的作用机制及其开裂时剪应力与正应力关系式、剪应力与位移关系式，为深入分析预应力混凝土锚固体或预应力岩锚体的锚固机理奠定了一定基础

Experimental research for transfer mechanism of anchored system at anchorage length

Based on theoretical analyses, model test and curve fitting, interface property, transfer mechanism and interface stress at anchorage length of anchored systems which are made up of bolts, grout and prestressed concrete are primarily studied. The equation of bolt grout interface stress, radial split criterion, slip condition, the equation of shear stress and axial displacement are produced; grout concrete interface strength mechanism, the equation of shear stress and radial stress, the equation of shear stress and axial displacement are derived, which build up basis for analyzing anchorage mechanism of prestressed concrete of rock anchored systems deeply.