The Seismic Isolation, Energy Dissipation And Seismic Response Analysis Of Large Span Steel-reinforced Concrete Mixed Structure

With the rapid development of our national economy and the continuous improvement of urban construction, the building structure is becoming more larger and functional diversification. Under this background, the mixed structure composed of steel-reinforced concrete are widely used in train stations, stadiums, concert hall, theatre and the public buildings with larger crowds. Energy dissipation technology is through the arrangement of bearings and magnetic energy dissipation damper on the premise that does not affect the conformation of the main building structure, for the purpose of eliminating isolation, increasing structural damping, dissipating the seismic energy in the main structure.By applying the energy dissipation technology, Not only the building is kept good without damage in the earthquake, but also the equipment in the building can be maintained conveniently after the earthquake and the functions of the building can be restored quickly.The base of isolation technology and the damping principle of energy technology are expounded briefly and several bearings and energy dissipation damper’s mechanical properties are introduced in this paper. Take a train station room as an example, four kinds of calculating models of basic structure, base isolation structure, energy dissipation structure, isolation and energy dissipation structure are established using the finite element analysis software Midas Gen and the time-history analysis of elastic seismic response is calculated. It can be seen from the comparison of displacement, floor relative displacement and acceleration of the four models that the base isolation structure and energy dissipation structure possess good isolation effect, among which the structure with measures of isolation and energy dissipation is better.