Numerical Simulation of Bearing Capacity of Complex Joints of Fully Assembled Steel-Reinforced Concrete Composite Columns
WANG Shengli
Abstract：In order to improve the bearing capacity of complex joints of fully assembled steel-reinforced concrete composite columns and reduce the strength degradation degree of complex joints under load,the numerical simulation of the bearing capacity of complex joints of fully assembled steel-reinforced concrete composite columns was studied.Three kinds of complex joint specimens with shear span ratios of 2.2,2.6 and 3.0 were designed by using C40 concrete,HRB400 high-performance steel bars and M20 friction-type high-strength bolts,respectively.The bearing capacity of the three specimens was analyzed by actual loading test and three-dimensional finite element numerical simulation test.The analysis shows that among the three complex joint specimens,the yield load of the specimen with the shear span ratio of 2.2 reaches more than 190 kN,and the peak load and ultimate load remain more than 200 kN,and its bearing capacity is significantly higher than that of the other two specimens.In addition,the energy dissipation coefficient of the specimen with the shear span ratio of 2.2 is higher,which can maintain a high energy dissipation capacity during the loading process.Meanwhile,the strength degradation of the specimen is small,and the stress level of the specimen is maintained in a good state during the compression process.Therefore,the complex joints of fully assembled steel reinforced concrete composite columns with a shear span ratio of 2.2 can effectively guarantee the bearing capacity of the building.
Keywords：Fully assembledSteel-reinforced concreteComposite columnComplex nodeBearing capacityShear span ratio
Publication Date：2025-12-30
Online Publishing Date：2025-12-15(First online date of this platform, not the publication date of the document)
Pages：7( 105-111 )