【摘要】 对于大跨度结构,分析时应考虑多点地震激励问题。本文考虑行波效应及部分相干效应生成人工地震波,对比分析了多点地震激励及一致地震激励下,输电塔-线体系与输电塔单塔结构动力响应的差别。并研究了跨距、弧垂等因素对输电塔动力响应的影响。结果表明,多点地震激励和导线可能会增大输电塔结构的动力响应,分析时应考虑其影响。更多还原

【Abstract】 In earthquake analysis,multi-support excitation should be considered for long-span structures. In this paper,wave-traveling effect and partial coherence were considered to generate artificial wave. Multi-excitation and uniform excitation stochastic response analysis was performed for transmission tower and transmission tower-line system. The influence of circuit for tower structure earthquake response was also analyzed. As a result,multi-support excitation and circuit may increase the response of the tower; thus,they should be considered in analysis.更多还原