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Comparative Analysis of Earthquake Response on Steel Frames under the Effect of Slab

Author: WanZuoJuan
Tutor: SunYuPing
School: Lanzhou University of Technology
Course: Structural Engineering
Keywords: Steel frame Rare earthquake Floor effect Eccentric Restrained Brace ANASYS finite element
CLC: TU352.11
Type: Master's thesis
Year: 2010
Downloads: 55
Quote: 0
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Abstract


Currently, the structural vibration control is one of the hot issues of the engineering seismic technology. A viscoelastic damper series eccentrically braced frame structure supporting the formation of energy dissipation eccentric support emerged in recent years a new type of energy dissipation structure. The dampers eccentric braced steel frame structural system under earthquake excitation energy dissipation devices can yield the dissipative part of the seismic energy into the plastic, thus postponing the yield of the link beam link beam, and reduce the link beam absorption earthquake energy more effectively to ensure that the link beam adjacent column with the support in the elastic state. Therefore, the the eccentric energy consumption supporting frame structure has been more and more applications. In this paper, the seismic design of buildings \PLATE effect analysis of the energy dissipation capacity of the different structures, eccentric energy consumption to support the structure of different lengths link beam energy dissipation capacity. Case study rare earthquake, through the ANSYS finite element method, the pure frame structure and support structure in PLATE PLATE role as a 10-story steel structure. Seismic response of the structure were The comparative analysis of the results show that the: PLATE role under pure the top of the frame structure displacement X, Y direction reduced by 29.5% and 34.3%, respectively. The large the horoscopes type eccentric energy consumption the support structure PLATE role than PLATE X displacement is reduced by 28.1% and 8.5% increases in the Y direction. Eccentric energy consumption to support the structure PLATE PLATE role than reduced 26.7% X-displacement, Y direction changes very little. With eccentrically braced steel frame structure, set different lengths of link beam, under rare earthquake earthquake response analysis. Through three different lengths of link beam model to analyze the impact of the of different link beam length and type of the energy dissipation capacity of the energy consumption structure. Seen link beam e / L lt; 0.3 satisfy the link beam shear, can be used a formula to determine the critical length of the link beam steel structure ignore the web of cross-section flange yield moment contribution. According to the above analysis, the energy dissipation technology practice useful suggestions for engineering design reference.

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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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