基于佐藤悟双折线模型的灌浆锚杆抗拔承载特性分析  

Analysis of Bearing Characteristics Anti-Pull for Grouted Bolt Based on Kezdi's Double-Broken-Line Model

作　　者：彭世明[1] 赵明华[2] 

机构地区：[1]湖南工业大学土木工程学院,湖南株洲412000 [2]湖南大学土木工程学院,湖南长沙410082

出　　处：《湘潭大学自然科学学报》2009年第1期104-108,共5页Natural Science Journal of Xiangtan University

摘　　要：针对锚杆-土层间的剪应力-位移特点,深入分析了灌浆锚杆抗拔机理.采用佐藤悟双折线模型,基于荷载传递法推导得到土层锚杆的侧摩阻力及轴力的解析计算公式.基于所获得的解答,分析了不同侧摩阻力传递系数k值下灌浆锚杆摩阻力及轴力沿锚固长度的分布规律.对于k值较大的接触面,可以将锚杆设计的短些,而对于k值,应将锚杆设计得长一些.工程算例对比分析结果表明,计算结果与实测值吻合较好.An analysis of anti-pulling mechanism was discussed on the base of the shear stress-displacement characteristics between grouted bolt-the soil layer. Based on the load transfer method and Kezdi＇ s double-broken line model, piecewise analytical solutions which were suitable for calculating grouted bolt skin friction and axial force were obtained. Then, the distribution of frictional resistance and axial force along the Bolt length are discussed by different k in detail on the base of the obtained analytical solution. Comparative analysis result of an engineering example shows that, the calculated values by the present method agree well with the measured data.

关 键 词：灌浆锚杆 剪切位移 佐藤悟双折线模型 荷载传递法 

分 类 号：TD353.6[矿业工程—矿井建设]