Semi-rigid Steel Frame Column Length Coefficient Calculation And Structural Performance Analysis

Beam-column connections of steel frame constraints, most of the range of fully articulated between the rigid and ideals. Beam-column connection from the design point of view can be divided into rigid, semi-rigid and flexible connectivity of three. Can be used to connect the performance of its moment-rotation curves. Semi-rigid frame column calculate the length of coefficient and a lot of factors.This paper start from the physical meaning of Column Length, considering the shear deformation impacted on the semi-rigid framework. To use part of the framework as the analysis unit, in the column coefficient of correction formula for calculating the length of the foundation. Through concrete examples, respective on a non-sway and sway are two situations to consider, nodes have adopted extended end-plate connections, double angle web connections, top and bottom flange angle to connect three different forms of semi-rigid. Compared considering shear deformation and rigid frame columns to connect the change in the calculation of the length factor.Specifically direct to the form of extended end-plate connections, by changing the thickness of end plate, obtain results with the end plate thickness increases, the column gradually decreased coefficient of calculating the length of the conclusions. End-plate thickness increases gradually, considering shear deformation sway semi-rigid steel frame column gradually decreases and the calculation of length of the coefficient of reduction of large. Analysis the reduction, obtain the sum of beam bottom and beam top's line of stiffness, calculated coefficient of the relationship between the length of column expression, for that fitting curve.Top and bottom flange of angle steel frame beam-column connection is a common form of connected nodes, its structure and properties of semi-rigid on impact, so that the analysis of the structure calculation and structure does not match the actual situation. In this paper, use finite element software ANSYS across five floors of the two semi-rigid steel frame analysis. By changing the rotational stiffness of beam-column joints to examine the framework of semi-rigid connections under external loads of performance, study of top and bottom flange of angle iron to connect the form of semi-rigid steel frame cycle, displacement, and stability properties of the situation. The calculated results with the corresponding rigid connections of steel frame a comparative analysis. Derived semi-rigid connections of steel frame structure performance. Then the impact the introduction of structural design and structure will be more consistent with the actual working conditions, so that structural design more economical and more reasonable. Finally, according to their own research in a detailed summary of the conclusions obtained on the semi-rigid steel frame future research work put forward.