摘要
结合国家重点建设项目５００ｋＶ送电线路岩石锚杆基础试验结果，对群锚基础的形式、破坏机理、影响承载力的因素、承载力的计算方法进行了分析，得出直锚式群锚受力比承台式群锚受力更合理；水平力对承载力影响较小；岩体的抗剪强度、埋深对承载力影响较大；锚筋受力较小。针对现有规程对承载力的计算，文中提出了新的计算方式。
The paper refers to experimental results on rock foundations of 500KV transmission lines which belong to nation's major projects, and analyzes types of group anchorage foundation, mechanism of destructive phenomena, influence factors of bearing capacity, and calculation methods of bearing capacity. It is concluded that the forces distribution of the vertival group anchorage foundation is more reasonable than those of mat form group anchorage; the influence of horizontal forces is less; the shearing stress of the rock and depth of burying play significant effect on bearing capacity;the force acting on reinforcement steel of anchorage is less; and the bearing capacity calculated from current applicable codes is rather conservative. New calculation formaulas are suggested.
出处
《东北电力学院学报》
1996年第1期52-57,共6页
Journal of Northeast China Institute of Electric Power Engineering
关键词
群锚基础
承载力
抗剪强度
输电线路
group anchorage foundation, bearing capacity,shearing strength
