Experimental Analysis Of The Seismic Performance Of The Semi-rigid Steel Frame Combined With The Steel Plate Shear Walls

The steel plate shear wall combined with the steel frame as a whole system isregarded as a new lateral force resisting system nowadays. The writer here combinedthe semi-rigid joints with this new system and put forward another structural systemform. The steel frame plays a role as the main structure in this system and it works withthe steel plate shear wall to resist the lateral force. As to the semi-rigid joints, the writerused the L-bar in a form of top and bottom. In order to analyze the seismic performanceof this structural system, the writer not only did experiment to observe the phenomenon,but also used the finite element analysis to analyze the model of the experimentalstructure. On the matter of how to do the experiment, the writer used the shaking tableto study the seismic performance of this structural system. As to the finite elementanalysis, the writer created a model in the same scale with the experimental structure. Inthis way, the writer compared the results of experiment and the finite element analysisand listed the main ideas as follows.?1?The writer designed and manufactured the model of a six layers-semi-rigidsteel frame-steel plate shear wall structure. Besides, the writer did the material test ofthe steel.?2?In order to shake the experimental model, the writer used the shaking table toput load on the model with the seismic waves. In order to make it successful, the writepicked seismic waves coming from different site classifications and with different peakaccelerations. During the vibration, the writer observed the structure's response of thedisplacement, response of the acceleration, the out-of-plane distortion of thesteel-plate-shear-walls and the formation and changes of the tension field on thesteel-plate-shear-walls. In this way, the writer analyzed how the site classification andthe peak acceleration of the seismic waves affected the dynamic properties of thestructure.?3?At the very beginning of the experiment, the writer used the flat noise tosweep the structure for its frequency, and after each of the conditions done, the writerused the same way to find out the change of the structure's frequency, in order to findout the change of rigidity of the structure.?4?On the matter of the finite element analysis, the writer used the ANSYS tocreate a model in the same scale with the experimental structure. In order to analyzethe seismic performance of the model, the writer picked the seismic wave coming fromthe2ndsite classification and used the same conditions as mentioned above to put loadon the model. In this way, the writer got the structure's time-history response of thedisplacement, time-history response of the acceleration and compared the results withthose of the experiment so that to find the differences.As to the base-shear-force of the structure, the writer compared the result of the finite element analysis with the resultscalculating in the standard way in order to prove the rationality of the results from thefinite element analysis.?5?As to the finite element analysis, the writer used the ANSYS to create somemodels of different thickness of the steel plate shear walls and did the analysis, inorder to find out if the structure's time-history response of the displacement,time-history response of the acceleration and the base-shear-force of the structurewould change in this condition and what influence the thickness had on the seismicperformance of the model.