Calculation method for bearing capacity of seismic joints of beam column rigid connections in multi story and high rise buildings
In view of the one-sided problem in the current research on the bearing capacity of seismic joints with rigid connections between beams and columns,a calculation method for the bearing capacity of seismic joints with rigid connections between beams and columns in multi story buildings is proposed.This method is used to design three types of seismic joint core area of rigid connection between beam and column:only adding steel fiber,only adding stirrup,and adding steel fiber and stirrup at the same time.Nine specimens are made according to the different volume ratio of steel fiber and stirrup ratio.With the nine specimens as the experimental object,after designing the test loading scheme and the distribution of measuring points,the seismic joint specimen model of rigid connection between beam and column of multi story buildings is constructed using finite element software,The model is used to simulate its test loading scheme.At the same time,the calculation of seismic joints of beam column rigid connection of multi story and high-rise buildings is realized by calculating the bending capacity of T-shaped steel,bolt capacity and column flange capacity of the specimens of seismic joints of beam column rigid connection of multi story and high-rise buildings.The experimental results show that the calculation results of the bearing capacity of the steel webs of the seismic joints of beam column rigid connections by this method agree well with the actual bearing capacity;It can effectively calculate the shear bearing capacity and bending bearing capacity of specimens with steel fibers and stirrups added in different core areas,and at the same time,it can clearly show the distribution of different bearing capacity of seismic joints of beam column rigid connection by using the finite element cloud diagram.
multi story buildingsbuilding beams and columnsseismic nodebearing capacityfinite elementloading scheme
NETL
NSTL
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