Abstract

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Title:: Experiment Research and Finite Element Analysis of Ultimate Bearing Capacity of Steel Tube Connection with Cross Flashboard

Author(s):: JU Yan-zhong; YAN Dong-xue; BAI Jun-feng; WANG De-hong; WANG Xin-ying; ZENG Neng-xian; School of Civil Engineering and Architecture, Northeast Dianli University

Keywords:: connection with cross flashboard; ultimate bearing capacity; failure mode; experiment research; finite element analysis

Abstract:: In order to study the mechanical characteristics of the connection with cross flashboard which was used in a new 220 kV steel tower cross diagonal member connection in Guangdong, the experiment study was carried out on bearing capacity of 8 groups of full scale join joints, which were in the form of regular bar plate, angle steel and bending plate respectively. Combined with the test results, the nonlinear finite element analysis and the parameter analysis of the test specimens were carried out using ANSYS. The critical values of the ratio of connection area to steel tube area and the ratio of slot length of steel tube to diameter of steel tube were given. The study results show that the connection with cross flashboard fitted with the diameter of steel tube is safe and reliable, but not economic enough. The angle steel and bending plate connections with approximate areas have no effect on bearing capacity of joints under axial compression. When the ratios are greater than the critical values, the elastic and plastic buckling failures of steel tube occur. When the ratios are less than the critical values, the position of connection with cross flashboard is damaged.