大跨度橋梁地震反應(yīng)譜的發(fā)展.pdf

大跨度橋梁地震反應(yīng)譜的發(fā)展

隨著我國大跨度橋梁結(jié)構(gòu)的發(fā)展, 反應(yīng)譜與橋梁結(jié)構(gòu)的發(fā)展不相適應(yīng)性日益嚴(yán)重。
本文對大跨度橋梁結(jié)構(gòu)應(yīng)用
規(guī)范反應(yīng)譜時存在的若干問題, 其中包括長周期反應(yīng)譜值、反應(yīng)譜組合方法、考慮地震動空間變化的反應(yīng)譜方法、反
應(yīng)譜輸入方向、綜合影響系數(shù)和阻尼比等進(jìn)行了總結(jié)和探討, 并指出值得進(jìn)一步研究的問題, 對于修正橋梁抗震設(shè)計
規(guī)范具有一定的參考意義。

As China's development of long-span bridge structure, response spectrum is incompatible with the development of bridge structures growing. This application of large span bridges
 Of spectrum exists in a number of issues, including the value of long-period response spectrum, response spectrum combination method, consider the spatial variation of ground motion response spectrum method, anti-
 Spectrum of the input should be the direction of the combined effects of coefficient and damping ratio are summarized and discussed, and pointed out that the issue deserves further study, for the modified bridge seismic design
 Specification has a certain reference value.