Experimental And Analytical Study Of Seismic Performance-Story Double-span Precast Concrete Frame

In recent years,as China attaches great importance to the development of housing industrialization,the State Council requires that efforts should be made to promote the prefabricated housing system during the "Twelfth Five Year Plan" period.The domestic coastal and inland developed cities have put forward clear targets for the construction proportion of housing industrialization;Therefore,to better secure and improve the reliability of prefabricated building nodes,the seismic performance studies on prefabricated frame node should be further improved.This paper presents an in-depth study of the seismic characteristics of assembled monolithic structures which commonly used in current construction industry,the main content of it is the study of various types of prefabricated beam,column,nodes and overall seismic performance.In accordance with current standards,for the cross-type nodes,two types of T-nodes and L-nodes contained in the planar frame,a one-truss,two-floors,two-spans assembled monolithic concrete frame with precast beam-column members connected by fully grouted sleeves and concrete post-cast sections is designed and fabricated.Based on the characteristics of the pseudo dynamic test,the connected one-truss,two-floors,two-spans fully assembled frame was tested with peak accelerations of 55gal,110gal,220gal,310gal,and 400gal,respectively.To record and analyze the structural seismic response characteristics and the damage forms of its nodes under the five operating conditions,and to give some measures and suggestions to reduce errors in the test.This test also can provide an empirical reference for similar tests.By analyzing the time history curve,hysteretic curve,ductility and energy consumption curve of the frame,the test results indicate that the maximum bearing capacity of the frame does not drop greatly under different test conditions,the inter-floor displacement angle meets the code requirements,and the frame has good deformation recovery ability.The pre-fabricated is a "strong-pole and weak-beam","strong joint and weak member" structure.Combined with the numerical simulation results of the finite element software ABAQUS,the data demonstrates that assembled buildings have good seismic performance.Combined with the finite element software ABAQUS to model and analyze the frame,and then compare the simulation results with the experimental data to provide theoretical reference and experimental data for those similar projects.