| Along with the development of national comprehensive strength, the development of cities was carried on faster and faster. The reconstruction of the old urban district has become an urgent to-be-solved problem. It is economical, convenient and it can maintain the original architectural culture to add layer modification to the old house. So it turns to be a strong measure of the reconstruction of the old urban district. However, it is difficult to find any domestic or foreign research about whether adding layer to the original building renovation will impact the seismic performance of the existing building. And it is even more difficult to find case to apply the energy dissipation technology to the measure of adding layer structure. In this paper, the viscous dampers were applied to light steel concrete mixed structure, a light steel concrete mixed structure mode was designed, and the shaking table test and finite element calculation of the mode carried out. The main research contents are as follows:(1) Analysis of the advantages and necessity of energy dissipation technology in the project of adding layer reconstruction; analysis of the basic principle of energy dissipation technology and discussion on the research status of energy dissipation technology in China and abroad.(2)Design of light steel concrete mixed structure model; individual shaking table test for normal and the viscous dampers-set adding layer modification; dynamic responses from 3 different seismic wave of the 2 structures(3)Comparative analysis of absolute acceleration response, storey drift and frame column shearing force of the normal and the viscous dampers-set adding layer modification(4)Modeling light steel concrete mixed structure finite element by SAP2000; caltulating dynamic responses from 3 different seismic wave of this model(5)Comparative analysis the finite element and the test results to verify the effectiveness of application to the finite element. |
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