大跨度上承式钢管砼拱桥的地震响应分析
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摘要
研究大跨度上承式钢管砼拱桥在地震激励作用下的响应特性.对比了中、上承式钢管砼拱桥的自振特性,采用时程分析法分析了纵向、竖向、横向激励作用下,上承式钢桁拱桥的响应特性,讨论了多点激励对上承式钢管砼拱桥地震响应的影响,并与中承式钢管砼拱桥的地震响应特性进行了对比分析.
Seismic response behaviors of long-span concrete filled in steel tube(CFST)deck-type arch bridge were investigated.The free vibration specialty between half-through CFST arch bridge and CFST deck-type arch bridge was contrasted.The seismic response behaviors of CFST deck-type arch bridge subjected to longitudinal excitation,vertical excitation and lateral excitation were analyzed by timehistory analysis method.The effect of multi-support excitation was also discussed,and the seismic response specialty was contrasted between CFST deck-type arch bridge and CFST half-through arch bridge.
引文
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