Application Of Reinforced Asphalt Pier Seismic Technology In RC Frame Structure

In recent years,our country has suffered many earthquake disasters,resulting in huge casualties and economic losses.Therefore,the seismic isolation design is very important.In this paper,the original technology of steel reinforced asphalt isolation is properly designed and introduced into the seismic isolation design of the lower layer(3-4 layer)frame structure.Based on the two methods of calculation and nonlinear time history analysis,the seismic isolation effect is analyzed and discussed.The main research contents are as follows:First,the structure and theory of the original steel asphalt isolation technology calculation are summarized.Combining the characteristic of frame structure,the method of setting friction sliding bearing under the column is put forward.Then the steel reinforced asphalt isolation pier is introduced into the seismic isolation design of the lower frame structure.Based on the calculation method of the original steel reinforced asphalt isolation layer,a set of calculation formulas for seismic isolation of the frame system is summarized.Aim at the calculation of seismic isolation of a low-rise frame structure in Gansu Province,the isolating affection of the new type of seismic isolation layer in the case of frequently occurred earthquake is evaluated.Secondly,in order to study the isolating affection of isolation layer of buildings with the new seismic isolation technique,the nonlinear time history analysis of the nursing homes mentioned in the previous section is carried out by using the finite element software ETABS.For having a more comprehensive discussion of the advantages of steel reinforced asphalt isolation technology,the rubber bearing isolation system is introduced to carry out the dynamic analysis under seismic action,and the seismic isolation performance of the two kinds of isolation systems are compared.The results showed that,Compared with the rubber bearing isolation system,the steel reinforced asphalt isolation system has some advantages.Moreover,this technology has the advantages of economical cost and simple construction,and is more suitable for the seismic isolation design of the low story frame structure.Finally,in order to study the seismic isolation performance,the different forms of the steel reinforced asphalt isolation layer are established by the transformation of the diameter and net height of the isolation reinforcement.Comparative analysis of the structure of the different types of seismic isolation system under the action of the earthquake,and pick out the ideal isolation effect of several types of isolation,to provide design basis for similar building structures.The results showed that,these two kinds of isolation form II-B and III-C isolation effect is good,the base shear of isolated structures is reduced by about 65%,and the displacement of isolation layeris controlled within 100 mm,which can avoid overthrow damage of isolated structure.