In order to improve the assembly degree of transmission tower and promote the wide application of bored pile-anchor composite foundation in mountainous transmission line,an assembled steel truss pedestal for transmission tower was proposed and experimental study was carried out to verify its feasibility.Firstly,the as-sembled steel truss pedestals for two types of transmission tower were designed and manufactured respectively.Then,static tests were conducted under each design load condition.Finally,the obtained displacement and strain data were analyzed.The test results showed that the displacement and strain results of the assembled steel truss pedestal increased linearly with the increase of load,the pedestal was in the elastic stage under the design load,and no local buckling occured.The vertical and horizontal relative displacement of the pedestal top plate were small,which meet the design requirement of stiffness.Compared with the design strength of the steel,the axial stress of the main material and the diagonal material and the equivalent stress of key position of the main material had a large safety margin,which meet the design requirements of strength.
关键词
装配式钢桁架支座/输电塔/山区输电线路/设计荷载/静力试验
Key words
Assembled steel truss pedestal/Transmission tower/Mountainous transmission line/Design load/Static test
维普
万方数据