摘要
针对输电线路工程新型环保基础–岩石嵌固式基础,进行现场真型试验,得到基础的上拔荷载–位移曲线与水平荷载–位移曲线,分析基础的承载特性与破坏机制,给出岩石等代极限抗剪强度的取值,采用极限平衡理论验算基础的稳定性,探讨地脚螺栓的荷载传递特性,并对其经济效益进行比较分析。研究结果表明,岩石嵌固式基础可应用于风化性较强的山区岩石地基,具有较好的经济性和环保性。
Rock embedded foundation is a new kind of environmental protection foundation in transmission line. Field prototype tests about the rock embedded foundation have been carried out for a 750 kV electric power transmission line in Gansu Province. The uplift loading-displacement curves and horizontal load-displacement curves have been obtained. The loading characteristics and failure pattern of foundation are analyzed based on test data. The rock＇s equivalent ultimate shear strength is determined by calculation. Limit equilibrium theory is used to calculate foundation stability. The load transfer characteristics of anchor bolts are analyzed. It is shown that the rock embedded foundation can be used for weathering rock foundation in mountain transmission llne. The economical benefit and performance of environmental protection of rock embedded foundation are pointed out according to comprehensive cost analysis.
出处
《岩石力学与工程学报》
EI
CAS
CSCD
北大核心
2009年第1期152-157,共6页
Chinese Journal of Rock Mechanics and Engineering
基金
国家电网公司科学技术项目:输电线路新型环保基础研究(SGKJ[2007]1027)
节理裂隙岩体地基注浆式锚杆基础研究(SGKJ[2007]1006)
关键词
岩土工程
输电线路
杆塔基础
岩石嵌固式基础
抗拔试验
geotechnical engineering
transmission line
pole foundation
rock embedded foundation
uplift testing
