Research On The Capability Of Seismic Performance Of The Composite Frame With Innovative Crimping Pec Column And Self-centering BRS Connection

The composite frame with the combination of BRS plate to dissipate energy and new type of PEC column with crimping edge is composite structure.Some domestic scholars have carried out relevant performance tests.The results show that this type of structure has better seismic performance,and in the area where earthquake strike frequently,the prospect of the application of this structure system is better.As lack of domestic relevant specification,and the fact earthquakes strike the area in our country frequently is true.To do the research on carrying out the framework system under reciprocating loading,capacity of self-centering and capacity of energy dissipation make more sense.This paper will focus on the analysis of the seismic performance of the composite frame with the combination of BRS plate to dissipate energy and new type of PEC column with crimping edge.Structure is designed to use high-strength bolt as the re-centering members,and set the BRS energy dissipation plate on the top and bottom flange of beam as wall-beam,at the same time,combining with the advantages of the PEC column that stiffness.in two-axles is alike.This research did with ABAQUS finite element software :(1)considering the framework of T-shaping members fastening ways,the initial pretension value of BRS section width,energy consumption,the rod length and vertical force by 1:2 scale and set up eight specimens.(2)Residual displacement and energy dissipation curve were obtained.by releasing the hysteresis load,(3)Analyze the effect of different parameters on the frame hysteretic performance,self-reduction ability and energy dissipation capacity.The results show that :(1)the self-restoring performance of single side anchored T-shaped members is better than that of bilateral.(2)The increase of pretension on the high strength pretensioned bolt is helpful to improve the self-restoring ability of the structure.(3)The increasing of the width of BRS plate can help the structural energy dissipation,but reduces the self-reduction capability accordingly.(4)The vertical force can reduce the structural plastic development and improve the self-reduction performance in the small and medium-sized earthquakes.However,once the earthquake get more violent than the moderate earthquakes,the structural plastic development will be aggravated,and the self-reduction performance will get bad.This paper provides the theoretical basis for the extension of the composite frame with the combination of BRS plate to dissipate energy and new type of PEC column with crimping edge to the actual project.