Dynamic Response Of Prefabricated Gasoline Station Shaped Steel Beam Canopy With Seismic Isolation And Damping Under Multi-dimensional Earthquake

Earthquakes,having caused major losses to various countries in the world,can not only cause damage to the structures o f prefabricated gaso line stat ion shaped steel beam canopy,but also make so me fuel oil spilled at gaso line stat ions and cause secondary disasters such as fire and environmental po llut ion,which seriously threaten the safet y o f people and environment.In recent years,the frequency o f earthquake occurrence has increased at a global scale,and at the same t ime,the construct ion o f gasoline stat ion shaped steel beam canopy has been proceeding in the direct ion o f large-scale and large-scale development,which has led to increase the possibilit y o f the destruct ion of gaso line stat ion shaped steel beam canopy structures under earthquakes.The techno logy o f seismic isolat ion and damping,as an effect ive measure,can comprehensively increase the seismic resistance o f the structure and reduce the occurring probabilit y of structural failures during earthquakes.In this paper,not only the d ynamic response but also the seismic iso lat ion and damping o f prefabricated gasoline stat ion shaped steel beam canopy under mult i-dimensio nal earthquake are studied.The SAP2000 so ftware is used to establish the finite element analysis model,and non-linear t ime history analysis is performed on the iso latio n structure,the damping structure and the combinat ion of iso lat ion and damping structure,whose dynamic response and the effect o f iso lat ion and damping are co mpared and analyzed under the mult i-dimensional earthquake act ion.This paper provides design reference for the development o f the destruct ion o f gasoline stat io n shaped steel beam canopy structures and the co mbinat ion o f iso lat ion and damping.The main research content s are as fo llows:(1)So me finite element analysis models are established to perform non-linear time history analysis on the non-contro lled structure o f prefabricated gaso line stat io n shaped steel beam canopy under mult i-dimensio nal earthquakes.The displacement response o f the co lumn top,the shear force response of the co lumn botto m,the residual displacement and elastoplast ic damage are analyzed.(2)The dynamic responses of prefabricated gasoline stat ion shaped steel beam canopy iso lat ion structure with lead-rubber bearing set under mult i-dimensio nal earthquakes are studied.The iso lat ion structure with lead-rubber bearing set in co lumn top and co lumn botto m of prefabricated gaso line stat ion shaped steel beam canopy are established respect ively.For the iso lated structure finite elem ent analysis model,the displacement response o f the co lumn top and the shear response at the botto m of the co lumn are discussed.The residual displacement and elastoplast ic failure of the structure are analyzed,and the iso lat ion effects of the two iso lat ed structures were co mpared,which differ fro m the earthquake response of non-iso lated structures.(3)The dynamic responses of prefabricated gasoline stat ion shaped steel beam canopy structure with viscous dampers under mult i-dimensio nal earthquake are studied.The displacement response o f the column top and the shear response o f the co lumn botto m are discussed.The residual displacement and elastoplastic failure o f the structure are analyzed,and the damping effects o f the ground motion response are analyzed,which are compared with those o f the non-shock absorbed structure.(4)The dynamic responses of prefabricated gasoline stat ion shaped steel beam canopy structures with lead-rubber bearings and viscous dampers are invest igated under mult i-dimensio nal earthquakes.Not only the prefabricated gaso line stat ion shaped steel beam canopy structures with viscous dampers and lead-lead rubber bearings on the bottom o f the co lumn but also the prefabricated gaso line stat ion shaped steel beam canopy structures with viscous dampers and lead-lead rubber bearings on the top o f the co lumn are studied by finite element analysis model respect ively.The displacement response o f the co lumn top and the shear response o f the co lumn bottom are discussed.The residual displacement,elastoplast ic failure,and the effect o f iso lat ion and damping about the structure ground mot ion response are analyzed,which are co mpared with those o f the non-isolated and non-shock absorbed structure.