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The Seismic Performance Analysis of Steel Frame-Rc Core Wall Structure

Author: WangYiXian
Tutor: MaoRongPing
School: Southwest Jiaotong University
Course: Structural Engineering
Keywords: Hybrid structure Steel Frame Core tube Floor displacement Story displacement Seismic performance
CLC: TU352.11
Type: Master's thesis
Year: 2011
Downloads: 53
Quote: 0
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Abstract


As China's economic development , construction developed rapidly. With steel frame - concrete core wall hybrid structure as represented in our high-rise and high-rise buildings and more widely . Because hybrid structure to reduce structural weight , speed up the construction progress and so has a clear advantage, good economic returns, and thus has a broad application prospects . For decades, its domestic and foreign experts and scholars from various theoretical analysis, model experiments , numerical calculations and other aspects of research, has achieved many results. This paper discusses the hybrid structure under horizontal seismic force deformation characteristics and laws , elaborated elastic dynamic analysis methods , and introduces a role in solving the seismic numerical integration Newmark-β method, on the other made ??the corresponding integral method introduction , in the finite element theory describes the shell element stiffness matrix , which will serve as the theoretical basis of numerical simulation . This paper further establish the finite element model, using modal response spectrum method for analyzing seismic effects studies as a hybrid structure of the main lateral force resisting elements of the concrete core wall and the stiffness of the change on the seismic response of the whole structure . Research says: by changing the thickness of the concrete core wall , and elastic modulus of concrete core wall thickness decreases with increasing altitude , to obtain a mixed structure layer displacement , story drift angle variation , as well as the overturning moment and shear force in the frame and allocation between core tube variation . Through analysis, we can see changes in the thickness of the concrete core wall displacements and internal forces of the structure has a significant impact . Structural forces for change in thickness of the core tube at a greater volatility of this situation , the use of elastic time history analysis as a supplement calculated the decomposition with the modal response spectrum method is more consistent results ; also uses Tangshan Bo , EL-CENTRO TARZANA waves and waves of the basic model for analysis, the structure under the action of seismic waves in different seismic response .

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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 > Seismic structure
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