Passive Energy Dissipation Control Analysis Of The Eccentric Structure Earthquake Torsional Response

Because of the complexity of the analysis and the ponderance damadge afterearthquake,the asymmetric-plan structures are more and more focused by the scholorsin home and abroad.With the development of the seismic energy dissipativetechnique,it can provide a new path to control the asymmetric-plan structure tosionaleffect.At the present time,there are very a few research about the analys and designmethod of the seismic energy dissipative asymmetric-plan structure,however,thestructure design method are not exit and has became a obstacle to stop the applicationof the damper.In this paper, the author researched the analysis and design method forthe seismic energy dissipative asymmetric-plan structure,which contains:(1) The state of art and state of practice of the structure tortional effect analysis anddesign methods are summarized in this paper and the mandatory provision in thecode,the adjustment method,and the seismic energy dissipation and the isolationtechnique are also generalized in the paper;(2) The style of damper are introduced in the paper, which contains viscousdamper, viscoelastic damper, lead-viscoelastic compound damper and metaldamper.The material,constitution, seismic energy dissipation principle,analysmodal and the parameter calculation method.The parameter institution and theimplementation method in SAP2000 are also researched in the paper.Take a3-story frame structure as example,the parameter design method of the damper isstudyed in the paper;(3) Based on the traditional asymmetric-plan structure design method,the seismicenergy dissipation analysis method and the "Code for seismic design ofbuildings(GB50011-2001)",the seismic energy dissipation asymmetic-planstructure seismic calculation of model-superposition response spectrum methodhas been researched in this paper;(4) The seismic energy dissipation asymmetric structure design method is researchedin this paper, and the damper selection method and the arrangement rule indifferent kind structures are generalized in the paper.The seismic energydissipation asymmetric-plan structure design method and design cycle are alsooffered in the paper;(5) This paper reseached, generalized and proved the design method of the eccentricstructure and the torsional control by damper through two different typeasymmetric-plan structures,one is period ratio overrun,the othe is displacementoverrun,which installed four different kind dampers in the structure.At the end ofthe paper, some meanful conclution and rules are suggested by autor.