Research On The Overturning And Aseismicity Of Isolation Structure In Steel Reinforced Concrete

With the rapid economic growth, construction industry has a number of newstructures in our country. The structure of steel reinforced concrete (SRC) is one ofthe representatives. Steel reinforced concrete structure is a combination of structure,which put section steel in the concrete though welding or banding, and sometimeswith a small amount of longitudinal reinforcement or constructional reinforcement,Since China is one of the multiple-seismic shock counties, in order to reduce theenormous disaster caused by the earthquake, the seismic isolation technology ideasgradually been recognized. Isolation technology is set some device equipment in thebuilding structure to extend the vibration period of vibration, to dissipate of seismicenergy and to reduce the seismic response of the upper part of the main structure.Along with the economic development, the application of steel reinforced concretewill be more and more widely, and thus the studies of isolation technology with steelreinforced concrete structure is necessary. The main content of this article is tocontrast before and after using isolation technology of steel reinforced concrete framestructure, to analysis the damping law of the steel reinforced concrete with isolatedstructure; at the same time in order to avoid the isolated structure overturning, I madea analysis on limit of height-width ratio of isolated structure; Finally, made a briefintroduction of the economic feasibility on isolation technology of steel reinforcedconcrete frame.This paper describes the mechanical properties as well as the arrangement of leadlaminated rubber bearings first; then introduced several mechanical model of theisolated structure, which highlights the analysis model and to solve the dynamicequilibrium equation in the finite element analysis software SAP2000; after usingfinite element analysis software SAP2000build steel reinforced concrete framestructure and steel reinforced concrete frame structure using isolation technology,comparative analysis the impact of isolation technology to the steel reinforcedconcrete structure, and the dynamic time-history analysis of the structure inearthquake, and comparing the seismic response of the two structural systems. Thenstudies the overturning of isolation technology with steel reinforced concrete framestructure, and ensure influencing factors and general laws to limit of height-widthratio of isolated structure of steel reinforced concrete. Final, from the perspective ofview of the increase and decrease of the cost and earthquake damage, make economic analysis of the isolated structure.Can be drawn by analyzing: after setting lead laminated rubber bearings, thenatural period of vibration of steel reinforced concrete structure prolonged largely,while the dynamic response of upper part of the main structure are reduced in theearthquake. Take the way of control structure system of aspect ratio to avoid isolatedstructure of steel reinforced concrete to produce overturning, the major factors are thehorizontal stiffness of the isolation layer, ground motion acceleration, and groundmotion intensity. Finally, the structure using isolation technology to increase the directconstruction costs can be controlled within5%, compared to the economic lossescaused by rare earthquake, its economy is still considerable...