输电铁塔岩石锚杆基础锚固深度的理论计算及探讨  

Theoretical Calculation and Ciscussion on Anchorage Depth of Rock Anchor Foundation for Transmission Tower

作　　者：曾二贤[1] 冯衡[1] 任建法[1] 

机构地区：[1]中南电力设计院,湖北武汉430071

出　　处：《电力勘测设计》2010年第2期60-62,80,共4页Electric Power Survey & Design

摘　　要：锚固深度的合理选取是输电铁塔岩石锚杆基础设计的一项关键内容。基于荷载传递机理建立锚杆受力平衡微分方程,推导出输电铁塔锚杆基础充分考虑岩体特性时锚固深度的理论计算公式。基于此,通过引入岩体软弱性系数η,考虑不同岩体特征情况下的锚杆基础进行数值计算分析,给出了相应的锚固理论深度建议取值。How to decide the reasonable anchorage depth of anchor base in rock is the primary element in designing the foundation for transmission tower. In this paper,the load equilibrium equation of rock anchor was built based on the mode of load transfer regular,and the analytical solution of the proper anchoring depth of rock-anchor-base for transmission tower was deduced and given. Then,some analysis and discussion work was done by introducing the weak factor of rock to considering the feature of different rock masses. Lastly,some related proposed values of anchorage depth were put forward.

关 键 词：岩石锚杆基础 锚固深度 岩体软弱性系数 荷载传递长度 

分 类 号：TU4[建筑科学—土工工程]