论文部分内容阅读
西安咸阳国际机场专用高速公路沿线桥梁地处Ⅷ度区,且上部结构质量大,仅靠桥墩延性已不能满足结构抗震设防标准,综合采用铅销橡胶支座、大伸缩量多向变位伸缩装置以及拉索式连梁装置共同组成减、隔震系统,以防止大震时桥墩产生倒塌性破坏及上部结构落梁。该系统的设计应用,提高了整个结构的抗震性能,满足了结构分级设防的多级抗震设防目标。
Xi’an Xianyang International Airport dedicated highway along the bridge is located VIII Ⅷ degree area, and the quality of the superstructure, only the pier ductility can not meet the seismic fortification standards, the integrated use of lead rubber bearings, large telescopic multi-directional telescopic device As well as the girder type girder device together to form a reduction and isolation system to prevent the collapsible failure of the bridge piers and the superstructure falling beams during the earthquake. The design and application of this system has improved the seismic performance of the whole structure and fulfilled the multi-level seismic fortification target of structural classification and fortification.