Study On The Capability Of Seismic Performance Of The Combined Frame With New Crimping PEC Column And BRS Connection

From multi-storey buildings to high-rise buildings,from high-rise buildings to super-tall buildings,the development of society is changing with each passing day.As the number of buildings increases,so does the increased security of the floors.After suffering several life-threatening threats and major property losses caused by rare earthquakes,building safety under earthquakes has become a key issue for all researchers,and self-centering structures have emerged.The self-centering structure adds pre-tension bar and auxiliary energy-consuming components to the traditional frame structure to reduce the residual deformation of the structure after the earthquake,and achieve the purpose of repairing to reduce the loss of people's lives and property.After studying the advantages and disadvantages of the traditional PEC column-steel beam frame structure,the research group proposed a new type of crimped PEC column-steel beam partial self-reset structure.Among them,in the aspect of PEC column,the column flange is rolled up,the traditional tie rod is replaced by the tie strip and arranged on the column at a certain spacing.This measure not only reduces the trouble of construction inconvenience but also effectively improves the tradition.The difference in bidirectional stiffness of PEC columns is more obvious.In terms of self-reset,the research team placed a long pre-tension bar on the beam and applied a certain pre-stress,and arranged the energy-consuming BRS board at the node to consume seismic energy.The combination of the two can achieve a good self-centering effect,in order to achieve the seismic fortification requirements of "small earthquake is not bad,medium earthquake can be repaired,and large earthquake does not fall."In order to study the self-centering effect,energy consumption and other seismic performance of the new PEC column-steel beam BRS plate connection frame structure,the research team used the combination of experiment and finite element simulation to compare and analyze,so as to seek the optimal construction measures.For this structure can be widely used in practical engineering.Due to the limitation of time,the research on the different parameter settings of the test piece can only be studied by the finite element simulation software.The comprehensive research results show that the loading test verifies the rationality of the finite element simulation,and the finite element simulation can also provide theoretical support for the improvement of the structural measures.The new type of new PEC column foot and the foundation connection method for the self-reset of the testpiece as a whole The effect and energy consumption have certain influence.The rigid connection between the column foot and the foundation can improve the energy dissipation capacity of the structure but reduce the self-centering effect of the structure.The single-sided arrangement of the bolts on the T-piece at the node will also be It has an influence on the bearing capacity and self-centering effect of the structure.The one-side arrangement of the piercing bolt can improve the self-resetting effect of the structure but reduce the bearing capacity;in the actual working condition,the application of the axial force to the self-resetting effect and bearing capacity of the structure not much impact abstract...