【摘要】 针对四川某500kV输电线路工程中代表性的酒杯型直线塔及干字型转角塔,利用钢结构分析设计软件STAAD建立了梁桁混合模型,采用振型分解反应谱法进行不同地震水准、抗震设防烈度、场地类别下的动力特性和地震响应分析。对比研究了非抗震和抗震两种情况下杆件的设计控制内力,分析了地震作用对铁塔各杆件的影响程度,同时找出了杯型塔及干字塔的薄弱部位,并针对薄弱部位采取了加强措施。更多还原

【Abstract】 Based on the background of typical cup-type tower and " 干 " type tower of 500 kV overhead transmission line in Sichuan,using steel design analysis software STAAD,the trussed beam models were established.Using the mode decomposition response spectrum method,the dynamic characters and seismic responses were analyzed under different seismic levers,different seismic precautionary intensities and different sites.The controlling force of the elements on tower was compared by considering two different conditions of seismic and non-seismic,influences of earthquake action on the part of the tower were analyzed to find out the weak parts of the cup-type tower and " 干 " type tower.In addition,some strengthening measures were taken in the light of its weak parts.更多还原