【摘要】 研究目的:结合处于高烈度区的某(48+4×80+48)m刚构连续梁桥的工程实例,分析对比对长联多跨刚构连续梁桥分别应用液体黏滞阻尼器、Lock-up装置、双曲面球型减隔震支座以及减震榫的减隔震效果,并对影响减隔震效果的相关参数进行分析研究,为合理选择减隔震措施提供依据。研究结论:(1)位于高烈度区的长联多跨刚构连续梁桥,刚构墩的地震响应较大,需要进行减隔震设计;(2)液体黏滞阻尼器、Lock-up装置、双曲面球型减隔震支座以及减震榫这四种减隔震设计措施均有各自的优点及局限性,前两种只适用于顺桥向减隔震设计,后两种在顺桥向、横桥向均能达到明显的减隔震效果;(3)针对高烈度区的长联多跨刚构连续梁桥,合理地选择减隔震措施及相关参数具有重要意义;(4)研究成果可应用于指导桥梁抗震设计。更多还原

【Abstract】 Research purposes: Combined with construction of a(48+4×80+48)m rigid frame-continuous girder bridge in a high seismic intensity area,the effects of applying the fluid viscous damper,lock-up device,double spherical seismic isolation bearing and shock absorber to the long multi-span rigid frame-continuous girder bridge are analyzed and compared respectively,and the main parameters that affect to the effect of seismic isolation design are discussed to provide the basis for the reasonable selection of seismic isolation measures. Research conclusions:(1) It is necessary to make the seismic design for the long multi-span rigid frame-continuous girder bridge in a high seismic intensity area because the seismic response to the rigid frame pier is rather big.(2) The analysis results show that the four seismic isolation measures of using the fluid viscous damper,lock-up device,double spherical seismic isolation bearing and shock absorber have their own advantages and disadvantages.The first two measures are only available for the bridge in longitudinal direction.The latter two measures are available for the bridge in both longitudinal direction and in transverse direction.(3) Reasonably selecting seismic isolation measure and its main parameters is very important to the seismic design of long multi-span rigid frame-continuous girder bridges in a high seismic intensity area.(4) The research results can be used in guiding for seismic design of bridge.更多还原