Research And Analysis On A New Outer-shell Connection Test

As the ratio of the steel structure in the form of building increases, frame structures composed of square steel tubular column and H-shaped steel beam have become one of the major representations in the development of steel structure of residential buildings. At present, there are three kinds of joints type for this kind of structure. They are separately the joint with interior diaphragms, the joint with through diaphragms and vertical stiffener joint. In this study adopted the bolt connection, column wall plate in the form of a new node adding coat. Make it satisfy the requirement of "strong node weak component" at the same time, the better the implementation of the speed advantages of steel structure construction.Nine more failure modes were analyzed to provide reference for the quasi-static test by using Yield line theory. In order to better promote new outer casing steel structure type node in the application of engineering, in view of the outer casing and the wall of steel pipe column connection integrity and node area of shear transfer mechanism and reliability, and improve the design method of engineering application, carry out the outer sleeve tube node special test.Design and carry out the quasi-static test of full-scale steel structure square steel pipe concrete column H steel beam coat plate type node. The failure process and feature of each specimen and the stress transfer mechanism in the connection were analyzed. According to the test data obtain node of the hysteresis curve, skeleton curve and the curve of bending moment-corner, and study the node ductility, energy dissipation, stiffness degradation and core area of shear deformation and other indicators, combined with the microscopic analysis of strain gauge and displacement, come to the shear transfer mechanism of the new node, and the collaborative work performance and seismic performance of jackets plate with square steel tube columns.Test specimen and using the finite element software to calculate the specimen were compared, through both the hysteresis curve, skeleton curve and failure form of fitting, carries on the analysis comparison, the finite element simulation of skeleton curve and hysteretic curve and experimental data obtained from test in general fitted well, which shows that numerical simulation of research way and the method is feasible, provide reference for the future experiment and numerical simulation.