【摘要】 地震输入问题一直是工程结构抗震研究所关注的焦点。在对大跨度结构进行抗震设计时,需要考虑多点地震输入的影响已成为国内外学术界和工程界的共识。本文根据傅氏变换,运用精细传递矩阵法推导出了大跨结构在多点地震输入下的频域精细传递矩阵,并在频域内对大跨度结构进行了动力分析。这种方法公式简单,能够快速、高精度地进行结构的地震反应分析。算例显示了本文方法的有效性。更多还原

【Abstract】 Earthquake input pattern is a principal focus in the research on earthquake-resistance of engineering structures.Based on the FF transformation,using the fine transfer matrix method,we derived the frequency precise transfer matrix of the long-span structures under the multi-supportt earthquake excitation,and made the dynamic analysis of the long-span structure in the frequency domain.The formula of the method is simple.It can fast make the seismic response analysis of the structure with high-precision.Examples show that the precise transfer matrix method is effective.更多还原