输电线路复合式锚杆基础现场试验研究

摘要

首次针对辽宁地区500kV抚顺变-程家变新建输电线路工程,进行了复合式锚杆基础的现场抗拔承载力真型试验.通过循环加卸载方式的基本试验与单方向加载方式的验收试验,得到了基础的上拔荷载位移曲线与基础的抗拔承载力,给出了相关设计参数的取值标准,进一步验证了复合式锚杆基础在500kV大荷载输电线路工程中应用的可行性.%The composite anchor foundation is a new kind of environmental protection foundation in transmission line. Field prototype tests about the composite anchor foundation were carried out firstly for a 500 kV electric power transmission line in Liaoning Province. Based on the basic experiment of the circular increment step loading and unloading method and the acceptance experiment of the single circling loading method, the uplift loading-displacement curves and the ultimate uplift bearing capacity were obtained. The loading characteristics are analyzed based on test data. The design parameters are determined by calculation. The experiment results show that the composite anchor foundation can meet the load requirements to 500 kV electric power transmission line.