Stress Analysis On Beam-column Joints Of Long-span SRC By Force Simulation

Steel reinforced concrete (SRC) structure with high strength, stiffness, shock resistance, better performance could be effectively combined with materials based on the advantages and disadvantages of section steel and reinforced concrete, which is widely used in the building in earthquake zones, high-rise building and long span buildings. It can perform the performance of steel, reinforced, concrete.SRC beam-column joints are not only the key part of the whole framework, but also the key part of connecting beam with column, whose forces are transmitted through the joints. The pressure of SRC beam-column joints are influenced by various extremely complex factors, and usually are in the state of bending shear compression. The great load on the upper structure shall be transmitted through the joints. Researching and analyzing of the force performance from joints to ensure the reliability of SRC structure joints is also a prerequisite to ensure the safety and reliability of engineering structures.In the engineering project of the Cultural and Sports Center in Zhejiang Guangsha College, The maximum suspension of the span of SRC beam with complex structure reaches7.2m, the largest span steel truss of which is larger than the existed corresponding range, so it requires high demand for the lower part of the steel reinforced concrete frame structure.The paper picked out the four kinds of representative joints as the research program from the engineering project of the Cultural and Sports Center in Zhejiang Guangsha College.①SRC column intersect with four SRC beams simultaneously;②SRC column intersect with three SRC beams and one SRC beam;③SRC column intersect with two SRC beams and one RC beam;④SRC column intersect with one SRC beam and one RC beam. The paper analyzed the force of the four kinds of representative joints and calculated the maximum force from the four kinds of representative joints, which are build for the model of Finite Element by the Separated modeling method through the software of ABAQUS Finite Element Analysis and used to analyze the numerical simulation for the force performance from joints.The paper discussed the steel allocation and cross-sectional shape for the four joints on the basis of the original, and concluded that SRC structure with four SRC beam-column joints of the Cultural and Sports Center in Zhejiang Guangsha College is characterized by high safety and reliability through the analysis of the force and strain distribution pattern of section steel with four joints, steel and SRC.