| As a dual lateral load resisting system, the semi-rigid connected steel frame-steel plate shear wall with higher lateral stiffness, bearing strength and ductility ,are gaining acceptance and suitable for multi-story or high-rise building in highly seismic regions. The structural influencing coefficient is keystone to obtain the structural design earthquake action in the performance-based seismic design of buildings. As part of national natural science foundation project- Structural Influencing Coefficient and Deflection Amplification Factor of Steel Structure, this paper is study with the structural influencing coefficient under the earthquake with seismic fortification intensity(namely the moderate earthquake)and the deflection amplification factor under the seldom occurred earthquake of semi-rigid connected steel frame-steel plate shear wall system, the main contents of this dissertation are the followings:1. The researches of structural influencing coefficient and deflection amplification factor and semi-rigid connected steel frame-steel plate shear wall are reviewed. For building seismic design code of China, different material and structure system have unified structural influencing coefficient, it is necessary to study the structural influencing coefficient of steel structure, so as to use its higher ductility and energy dissipation ability efficiently.2. According to building seismic design code of china, 10 semi-rigid connected steel frame-steel plate shear wall structures, which consider different connection stiffness and stories and spans, are designed. The structures is separated into 4 groups named A B C and D. For needs of further research, finite element models with beam-shell element and equal inclined stripe model are established.3. Experiment model from the first 3 floors of shear wall span of D group is designed with geometric similar ratio 1:3. Static pushover analysis is done with the experiment model. The strength, deformation, damage mode, stress and strain distribution in shear wall of the experiment model are observed and analyzed.4. Simulation of the experiment model in finite element method with the beam-shell element model and equal inclined stripe mode that established in this paper is done. Comparison between the result from simulation and experiment proved that both of beam-shell element model and equal inclined stripe model are suitable for further analysis.5. Static elastoplastic analysis of semi-rigid connected steel frame-steel plate shear wall structures that designed in this paper is executed. Improved capacity spectrum method, which consider higher vibration model and different ductility, is exert to get structural influencing coefficient R , deflection amplification factor C d, ductility deduction factor Ru and overstrength factor R?.The influence from different connection stiffness and stories and spans are considered at the same time.6. Incremental dynamic analysis method (IDA) is applied to the structures that designed in this paper with series earthquake waves, which selected by certain principle. The relationship of base shear force and top displacement of the structure is get through curve fitting method. With improved capacity spectrum method,R , C d, Ru and R?are obtained. The influence of connection stiffness and stories and spans are considered after the analysis of the result. After comparison of the result from pushover and IDA, The structural influencing coefficient and deflection amplification factor of the semi-rigid connected steel frame-steel plate shear wall structures that designed according to building seismic code of China are suggested.7. According to the newly published Chinese Code for seismic design of building (GB50011-2010), 2 semi-rigid connected steel frame-steel plate shear wall structures are designed with the paper suggested structural influencing coefficient. Evaluation with Pushover method of the new designed structures proved that the paper suggested R and C d are exact and felicitous. |
PDF Full Text Request