Studies On Seismic Performance And Design Method Of Steel Frame Structures With Light-gage Steel Joist Grouting Composite Wall Panels

With the promotion o f b uild ing industr ia lizatio n,ma ny researches have been made in the assembly syste m of steel structure syste m,but the problem of prefabricated wall pane ls still restr icts the develop ment o f multi-and high-rise steel structure residentia l syste ms.Lots of researches on light-gage steel joist grouting composite wa ll pane ls ha ve been carried out by many exper iments and theoretica l studies at ho me and abroad.However,the seismic per forma nce and design method of steel fra me structures wit h light-gage steel jo ist grouting composite wa ll panels(LSGPs)is rare.The seis mic perfor mance and design method of steel fra me filled lightwe ight steel jo ist grouting compos ite wallboard are studied fruitful through e xperime nta l research and finite ele ment s imulation in this paper.:(1)Two specimens o f steel fra me structures with light-gage stee l joist grouting composite wa ll pane ls(LSGPs)and one specime n of pure LSGP subjected to low-cyclic loading were conducted.The main parameters were the wa ll opening setting and the steel fra me setting.The interaction behavior and failure modes of steel fra me structures with LSGPs under se is mic actio n were investigated.The hysteretic curves,the skeleton curves,the degradation curves of strength and stiffness,ductility and the energy diss ipation capacity of the wall pane ls were analyzed.The test results s howed that the connection o f wa ll pane l a nd steel fra me was the ma in factor influenc ing the bearing capacity and stiffness of str ucture;The steel frame str uctures with LSGPs had good hysteretic behavior,ener gy d iss ipation and ductility;(2)In this chapter,three finite ele me nt calc ulation models of steel frame structures with LSGP were established.And the accuracy o f the calculatio n models was verified by co mparing the finite ele me nt ana lys is results with the experime nta l results.The parameters s uch as steel stre ngth,foa m concrete strength,wa ll type,strip arrange me nt and column spacing were studied.The ma in factors that affect the seis mic perfor mance of compos ite wall were determined and the reasonable construction measures were put forward.(3)According to the princ ip le of equal-bar method,and referring to the existing research results,ana lys is o f steel fra me str uctures with LSGP under cyc lic loadings were established.Anti-lateral stiffness and shear capacity comp utationa l for mula o f compos ite wa ll were derived according to the anti-latera l stiffness and shear capacity simp lified calc ulation model of stee l fra me str uctures with LSGP.