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The Analysis on Base Seismic Isolation of Rc Frame Structure

Author: ZhongLiang
Tutor: ZhangJianJing
School: Southwest Jiaotong University
Course: Structural Engineering
Keywords: Rubber bearings Frame structure Base isolation Nonlinear Time history analysis
CLC: TU352.12
Type: Master's thesis
Year: 2009
Downloads: 60
Quote: 4
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Abstract


Isolation structural system is different from the traditional system of seismic structure of a passive control system , by setting the isolation device to absorb seismic energy consumption , reduce the seismic response of the structure , to ensure the safety of the structure . The isolated structure system changed the traditional seismic structural system energy consumption principle through the isolation layer of energy-consuming devices , rather than structures and structural elements to absorb seismic energy consumption , the energy consumption characteristics of this superior traditional seismic structural system are not able to achieve . This paper analyzed the characteristics of rubber bearings , and frame structure as objects to study the characteristics of the damping effect of the seismic response of base isolation technology . Do this ; nonlinear dynamic structure by means of the finite element analysis software SAP2000 time history analysis . Frame structure with space pole model calculation , the bilinear spring Analog rubber bearings . To a six-storey frame structure for example , considered separately and isolation ( traditional seismic program ) , laminated rubber bearings for base isolation seismic isolation device , its input seismic waves , a lot of computational analysis to compare draw some useful conclusions . The paper compared the seismic effects of the two kinds of programs . The study showed that : frame structure significant isolation effect , it can greatly reduce the role of the structure of the horizontal seismic rubber bearings . Displacement and isolation structure base shear layer , the layers the accelerations are far less than the results of the calculation of the non - isolated structure .

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CLC: > Industrial Technology > Building Science > Building structure > Special Structure > Anti - shock structure,disaster prevention structures > Shock, isolation, and explosion-proof structure > Isolated structure
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