| With the development of economy,combination columns of steel and concrete have been used in more and more high-rising structures in our country,such as profiled bar column,etc.Rectangular concrete-filled tubular column possesses great anti-bending and anti-shearing capability and good energy-consuming performance and its shape was regular.lt is in favor of beam-cloumn connection and architecture design,so it has good development foreground.Many researches have been made about Rectangular concrete-filled tubular in and out our country,but most focus on performance of rectangular concrete-filled tubular column and design methods,however,the study on connection of rectangular concrete-filled tubular column is less.On the basis of other people's research,combined with the application of concrete-filled steel tubular structure in our country,a new type of connection that can be used to rectangular concrete-filled steel tubular column and reinforced concrete beam was proposed.The main contents in this paper are as follows:(1) One specimen with 1:3 scale of modeling for the practical project has been tested.The test setup of X-shape has been adopted to realize the cyclic load.The stress-strain principal of connection region, steel corbel and reinforcement has been studied.Additionally,hysteresis curve of joint between column and beam under cyclic loads was plotted and anti-seismic performance of joint has been discussed.The preliminary experimental results indicated that this kind of joint has reliable performance.(2) According to the APDL in the finite element program of ANSYS,calculating program .has been written.Through calculating,four connection specimens have been analyzed.The tress-strain principal of connection region , steel corbel and reinforcement has been studied.Hysteresis curves of the finite element model were plotted and were compared with the experimental result.The result of finite element indicate that this kind of joint has reliable performance. |
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