风化岩体中压力型锚索锚固长度设计方法  

Design Method of Anchorage Length of the Pressure-type Anchor Cable in Weathered Rock

作　　者：叶红[1,2] 夏元友[1] 刘笑合 陈杰[1] 

机构地区：[1]武汉理工大学土木工程与建筑学院,武汉430070 [2]武汉交通职业学院交通工程系,武汉430065 [3]秦皇岛玻璃工业设计研究院,秦皇岛066001

出　　处：《武汉理工大学学报》2011年第1期100-103,共4页Journal of Wuhan University of Technology

基　　金：国家自然科学基金(50874085);广东省科技计划项目(63123)

摘　　要：针对压力型锚索设计的理论方法是建立在均质岩体的这一假设,考虑到实际工程中风化岩体是非均质且连续的这一特性,结合横观各向同性体在点荷载作用时的应力特征,推导了压力型锚索在风化岩体内的剪应力表达式,并在此基础上建立了压力型锚索锚固长度的设计方法,使修正后的设计方法更加符合实际工程。通过数学回归方法获得了实际工程的物理参数,采用修正后的设计方法进行了算例分析,结果表明修正后的设计方法非常符合实际工程情况。Based on the assumption that the theoretical design methods for pressure-type anchor cable were mostly based on the homogeneous rock.The shear stress expression of pressure-type anchorage cable in weathered rock was deduced based on the characteristics of weathered rock and stress distribution of transversely isotropic rock under point load.And design method for anchorage length of pressure-type anchorage was established,which was more conformed to the practical engineering.The physical parameters of an actual project was obtained by mathematical regression,using the modified design method of a numerical example,the results showed that the modified design method was more conformed to the practical engineering.

关 键 词：非均质岩体 预应力锚索 锚固体 设计方法 

分 类 号：TU457[建筑科学—岩土工程]