The Seismic Response Analysis Of Irregular Frame Shear Wall Structure And Research On Shock Absorption And Isolation

As is known to all,in urban architectural design and planning,both high-rise buildings and super-high-rise buildings have unparalleled advantages and are preferred by architects,and their architectural height has been refreshed again and again.The traditional aseismic design method follows the design standard of "small earthquakes are not bad,medium earthquakes can be repaired,and large earthquakes cannot be destroyed",which is mainly to achieve the above three levels of fortifications through two-stage design.It is neither economical no safe,which is the drawback of traditional seismic design,especially for some important landmark buildings and high-rise buildings with precision instruments and equipment,the safety and reliability of their structures is very important.In order to solve the above problems effectively,the base-isolation technology is one of the most effective techniques in the field of building structure vibration reduction,mainly because the period of self-vibration of the structure is extended,and the influence of superstructure on the ground motion is reduced when the earthquake occurs.The energy dissipation principle of the traditional structure system is different from that of the seismic isolation structure system.The seismic energy input structure system is consumed by the lead and zinc support of the seismic isolation,rather than by the elastic-plastic deformation of its own components.When the new type of energy-dissipator and anti-buckling energy dissipation support is subjected to repeated loads,the strength of the component can reach the yield strength without buckling failure,so the entire section of the energy dissipation support can reach the yield strength in practical application whether it is under tension or under pressure.When a strong earthquake comes,many of the seismic energy input into the superstructure is dissipated through the lead-zinc isolation support and the energy-dissipation support,so the main structure can avoid being damaged.In this paper,the development history,current situation,advantages and disadvantages of anti-buckling energy dissipation support and basic seismic isolation technology,as well as the application of engineering examples,are summarized.And then using the finite element analysis software MIDAS GEN to plane L frame shear structure,the buckling support of frame shear structure,lead and zinc consumption of isolation bearing frame shear structure,prevent buckling support and lead and zincconsumption isolation bearing technology combined application of frame shear structure,respectively for four kind of scheme of dynamic model eigenvalue analysis and time history analysis and in the following aspects compared to the original structure and the other three schemes of damping energy dissipation situation:(1)the layer displacement Angle(2)layer shear(3)the overturning moment(4)the roof acceleration comparison(5)the roof velocity comparison.The research shows that when the structure is subjected to moderate or large earthquakes,the lateral stiffness of the superstructure can be changed by reasonable arrangement of BRB,so as to reduce the tensile stress of the seismic isolation bearing under earthquake action.The deformation of the lead-zinc isolation bearing or energy-dissipating support dissipates the seismic energy input into the structure,and the effect of shock reduction is significant.