Seismic Performance Of High-rise Double Tower Structure With Irregular Large Chassisand Energy Dissipation Analysis

With the continuous development of the society,the construction of the city has reached a saturated state.In order to save the construction land and expand the green space,the construction of each city is often dominated by high-rise construction.At the same time,the high-rise building is used to measure the economic development of each region.The important index,the high-rise double tower high-rise structure is the crystallization of this era.Because the structure of the two-tower structure of the earth chassis is complex and serious after strong earthquakes,it is necessary to analyze its seismic performance.This paper mainly analyzes the seismic performance and energy dissipation analysis of the double-tower structure of the large chassis.In the first chapter,the general overview of the earthquake is introduced.The composition,classification and application of the double-tower structure of the large chassis and the research status at home and abroad are carried out.After the elaboration,two sets of reinforced concrete frame-core tube structure models were established.Using the SAP2000 structural design and analysis software,the modal analysis was carried out on the two groups of models,and the response spectrum analysis and two-way analysis under the one-way earthquake were carried out.Response spectrum analysis under earthquake action,linear time history analysis under unidirectional earthquake and linear time history analysis under bidirectional earthquake.Finally,the viscoelastic damper device with symmetric arrangement of structures is used under the rare earthquake.Comparative analysis of viscoelastic damper structures.This paper mainly analyzes the following aspects in turn:1.Two sets of large-tower double-tower structure models are established.The modal analysis of the model is carried out to obtain the basic performance parameters,including the quality participation coefficient and the natural vibration period,and then verify whether the cumulative quality participation coefficient of the structure meets the requirements of the specification.2.The two groups of models were analyzed by response spectrum analysis under unidirectional earthquake.The inter-layer displacement angle of the structure was calculated from the inter-layer displacement obtained after analysis,and the seismic performance of the structure was analyzed.Then the two groups of models are analyzed by the response spectrum under the action of two-way earthquake.Finally,the seismicperformance of the structure under the action of two-way earthquake should be considered.3.Input two natural waves and one artificial wave for the two sets of models respectively.Perform linear time-history analysis on the two sets of models first,and combine the inter-layer displacement and the calculated inter-layer displacement angle to analyze the structure under the ground action.The response is to find the weak layer of the structure.4.Select a large-chassis double-tower biaxial symmetry structure of the model,add a viscoelastic damper on it,input three kinds of seismic waves under the rare earthquake,and calculate the inter-layer displacement and the calculated inter-layer displacement angle.Perform seismic performance analysis with a viscoelastic damper model.