Finite Element Analysis On The Behavior Of Steel Beam-lightweight Aggregate Concrete Column Joints

The composite structure of steel beam and lightweight aggregate concrete column combines the characteristics of light and high strength of two kinds of materials,that is,the mechanical properties of steel and lightweight aggregate concrete can be fully realized from the economic point of view.In recent years,in developed countries such as the United States,Japan has been more and more widely used.Steel beam-reinforced concrete column structure even on the pure steel structure and reinforced concrete structure of a succession is also a development of these two structures.This paper is mainly through a series of finite element software ABAQUS analysis.The article is divided into five chapters,the first chapter is the introduction.The second chapter mainly introduces the finite element modeling method,the precautions and the constitutive model selection.In the third chapter,the phenomena and results of the completed tests are briefly described at the beginning of the chapter,and the same finite element model as the experiment is established to verify the feasibility of the model.The fourth chapter mainly establishes the finite element model of two kinds of nodes and adopts the loading mode of monotonic load.And the finite element results of the two are compared to verify whether the bearing capacity of the new node is improved.The fifth chapter compares the seismic capacity of two kinds of nodes under earthquake action,and verifies whether the seismic performance of the new node is better than that of the original node.On the other hand,the influence of different axial compression ratio on the seismic performance of new joints is analyzed by finite element simulation.In this paper,the feasibility of finite element analysis is analyzed based on the existing nodal connection test of steel beam-reinforced concrete column structure and the mechanical performance of steel beam-lightweight aggregate concrete column is analyzed by finite element software.And according to the T-shaped steel joint connection method to propose a new type of node connection with unequal angle steel connection.The finite element software ABAQUS was used to establish the two models under monotonic load and cyclic loading,and compared with the finite element model of the original node under the two loading modes.The new type of steel beam-light aggregate concrete column structure In the feasibility.