The Passive Energy Dissipation-seismic Reduction Control And Performance Optimization Of The High-rise Buildings

Vibration control of structure is one of the important pathway within the seismicresistance design recently. The methods of passive control using viscous damper, whichhas a broad application foreground, because the simple structure, convenient constructi-on and obvious effect of seismic reduction.In this paper, author introduces the basic seismic reduction theory and restoringforce model of the viscous damper. Author puts forward the seismic reduction design’smain point of the structure with viscous damper, the main point includes the choice,installation forms and arrange principle of damper, summarizes the seismic reductiondesign’s analysis of the structure with viscous damper, sums up the seismic reductiondesign’s method of the structure with viscous damper.This paper uses the finite element analysis software SAP2000, and makes a12-storey frame structure as prototype. Viscous dampers installed to the prototype andadopt the same section, then it be extended to a15-storey frame structure calculationmodel with viscous dampers. The EL Centrol seismic wave, Taft seismic wave andAritificial seismic wave are input from the structure’s two-way, the no control structurewhich have no installation of damper and each floor is decorated damper of the energydissipation structure make time history analysis and contrast. This paper validates themethod that passive energy dissipation control through the installed viscous damperscan improve the seismic resistance behavior of the building, and the building can addsthe quantity of the floor on the basis of no change of the structure’s component sections.In addition, this paper also puts forward two schemes for optimization analysis onthe basis of above Analysis. The second scheme makes the displacement between stor-eys as control function. The third scheme decorates dampers on the basis of dynamic elastic-plastic analysis’s result. The second scheme needs to make the no controlstructure have the time history analysis, confirms the storey which has the largestdisplace-ment between storeys, decorates the damper at this storey, repeats cycles untilthe largest displace-ment angle between storeys meet the standard’s requirement. Thethird scheme needs to make the no control structure has dynamic elastic-plastic analysis,checks the yield components order and the plastic law of development, gets the weakpart of the structure, decorates the different damper on the basis of the plastic hinge’slevel of development. Then this paper makes the energy dissipation structure hasdynamic elastic-plastic analysis, until it meet the standard’s requirement.Finally, this paper makes the three control scheme have a contrast from the aspectof every storey’s acceleration, displacement between storeys, storey shear and damper’squantity. Results show that the third scheme not only has better control effect, but alsohas good economic. This paper could be consulted for practical engineering.