Design Of Double Spherical Surfaces Seismic Isolation Bridge Bearing With The Same Direction With Ball

In the past ten years, the earthquake disaster, different grades of gradually all over the world such as: America 1994 Northridge earthquake, the 1995 Kobe earthquake, Japan in 1997 USA San Fernando earthquake, 1999 Chi Chi earthquake in Taiwan, the 2008 Wenchuan earthquake and the Yushu earthquake in 2010, were given when the traffic of network caused serious damage, causes a great loss life and property. With the development of the city, traffic network in the whole city is becoming more and more important in lifeline system earthquake disaster prevention.China is an earthquake prone country is currently in a period of rapid development of traffic engineering construction, to seek for the seismic design ofmore effective, try to avoid the bridge collapsed in the earthquake, the earthquakeworkers and structural engineers constantly on the bridge structure seismiclaunched a lot of research work, various into seismic design method the implementation in the engineering practice. Among them, the method is generally provide less displacement isolation needed to increase the ductility of bridge structure through the bridge support, to prolong the cycle of bridge structure, the isolation of peak ground acceleration is transferred from the pier,and, but eccentric displacement due to vertical loads P effects on the support that bridgepier, andTaiwan additional.bendingmoment P delta function, the P de lta effect, displacement, thehorizontal force, andTaiwan bearsmall eccentric, but additional moment is large, the dimensions of the bearing andthe top surface of the pier, table increases the sponding increase, cost.Therefore, thebearing less urgently needs a kind of seismic force and displacement of dual control, make the bridge seismic safer, more reasonable structure, and lower cost.This paper mainly introduces the development process of new type isolation bridgebearing a seismic force and displacement of dual control, including development background, development the necessity and important significance, principles of structural design, seismic performance test and analysis, the dynamic response analysis, series design principles, social benefit and benefit analysis, support production processing and installation and maintenance and other content.