A Study On The Seismic Design Method For Energy Dissipation System

Seismic design of the traditional structure is basically aimed at3points, which isno-damage under light earthquake, repairable under medium earthquake, andno-collapse under strong earthquake. This design logic is based on the idea of pricelesslife and is the basic policy of most structural seismic design. However, although thebuilding based on above idea is not heavily damaged after the earthquake, the damagephysical truth leads to the pause and lose of previous f-unction, even damage thenonstructural components, hardware devices and proper-ty. It may lead to more seriousproperty and functionloss than architectural struc-ture damage itself. The situation oftenappears at high-tech plant of the science park in China. Under the high efficient industrydemand and high standard env-ironment, structure seismic performance is attachedmore importance. Besides, fr-equent international earthquake disaster makes itimportant issue to study energy dissipation technology.Publication of energy dissipation structure is not only depended on the damperdevelopment but also on the mature design way of energy dissipation. The paper doesdetailed research on energy dissipation structure and contains below content.(1) It is brief introduction of dampers classification and mechanical model. And itexplains the theory of how energy dissipation structure controls the seismic responsefrom the angle of response spectrum and energy.(2) It gives explanation and comparison based on the common two kinds of splitdesign method and integrated design method. The design principles of the former is toconsider separately of main structure and energy dissipation device, which is to designmain structure on the premise without regard to energy dissipation device. The designthought of integrated design method is to take main structure and energy dissipation device as a whole. It is discovered that split design method is more suitable forreinforcement of existing buildings.(3) It raises a method of energy dissipation reinforcement on the theoretical basisof energy dissipation split method and the code for seismic design in China. Based onthe response spectrum theory, the method is aimed at performance objective of energydissipation settled initially by the quantity of dampers vibration-absorption performancecurve optimization selected. It avoids the process of adding dampers on the previousproject experience and repeated trials by time-history analysis.(4) It analyzes seismic retrofitting of structure with dissipaters on the teachbuilding with split design and the result shows that the building reaches the aim ofraising1degree seismic performance by the split design reinforcement which is studiedin this paper. On the contrary, if building in planning is designed by energy dissipationmethod, the1degree seismic fortification intensity can be reduced.(5) It raises an energy design method on the base of elastic system which is toavoid plastic damage on the frame units during the earthquake. The energy theearthquake input will be dissipated by self damping ratio and and effective dampingratio which is additionally put by the damper. The energy will also be distributed byeach damping ratio. On the basis of overseas research date, the site characteristic periodcalculus of interpolation divided by code of seismic design is suitable for energy inputspectra.(6) It goes vibration reduction analysis on teach building with energy designmethod and the result shows that the planning building can realize basic elastic undermedium earthquake by the energy dissipation design described in this paper.The split design is not only suitable for the building reinforcement but alsoimproves1degree seismic performance objectives. Energy design method is not onlysuitable for reinforcement of exist buildings but also for planning building design. Butthe aim is both to realize be elastic under earthquake. Therefore, the owner will requestraising performance objectives for some importance buildings and the this method willbe decent choice at that time. Since two design methods described in this paper is bothsuitable for seismic design code, I hope it plays positive role in the generalization ofenergy dissipation structure in China.