Study On Mechanical Properties And Design Method Of Frame Shear Wall Structure With Special Shaped Columns Of Concrete Filled Steel Tube

In recent years,with the vigorous promotion of national policies,the fabricated buildings in our country are booming.In response to the call of the state,various regions have successively formulated a series of targets for the development of fabricated buildings and introduced a series of support policies.Major companies have also launched their own assembly structure system.The development of fabricated buildings is the trend of the times,but the development of China’s fabricated buildings is not mature.The performance of some fabricated structural systems on the market needs to be further optimized.The design standards of fabricated buildings need to be further improved,construction technology and construction.There are still many problems in management,which restrict the development of fabricated buildings and enterprises.Therefore,an efficient and reliable assembly structure is particularly important.According to the existing research results,based on the concrete-filled column structure of the concrete-filled steel tube,combined with the high-strength anti-side force members of the steel plate combined shear wall,it is considered to combine the two to form a new structural system.This paper firstly investigates the development status of concrete-filled steel tubular structures,and summarizes the research results of concrete-filled steel tubular composite columns and steel plate shear walls.In order to study the influence of steel plate shear wall on structural performance,the seismic performance of the composite was designed.Two 1/2 scale frame pseudo-static tests were completed.Observe the damage phenomenon of the test piece,study its failure mechanism,and compare its seismic performance.The test results show that the concrete-filled steel tubular composite frame-shear wall structure has good bearing capacity and energy consumption.The experimental model was established by ABAQUS finite element analysis software,and the seismic performance of the structural system was analyzed and compared with the experimental results.The analysis results show that the results of finite element analysis agree well with the experimental results.According to the test results and engineering design experience,different parameters were selected for comparative analysis.The effects of shear span ratio,axial compression ratio and steel plate thickness on structural mechanical properties were analyzed to guide the actual engineering design.Based on the actual engineering of a concrete-filled steel tubular composite special-shaped column frame-shear wall structure,the actual structure model is established by using Yingjianke software.Based on the actual structural model,the shear wall form is changed,and the difference in performance between the single-wall shear wall and the steel plate combined shear wall is compared.The actual structural model is established by Midas software,and the detailed problems in the modeling are analyzed.Discussion on design and modeling method of concrete-filled steel tubular composite special-shaped column frame-shear wall structure.Finally,some suggestions for the design and modeling method of concrete-filled steel tubular composite special-shaped column frame-shear wall structure are given.