Study on behavior of GFRP beam-to-column T-joints based on angle steel connection

doi:10.19936/j.cnki.2096-8000.20240728.007

Abstract

Abstract: Different types of T-joints of GFRP beam-column were designed with the connection form of upper and lower angle steels. The effects of type of angle steel, row distance of bolt, end distance of bolt and row number of bolt on the bearing capacity and deformation properties of T-joints of GFRP beam-column were studied through the monotone loading test of eight node members and combined with the finite element analysis. The results show that, compared with no stiffeners, the addition of stiffeners can significantly reduce the deformation at the angle steel corner, and the installation of triangular stiffeners can improve the bearing capacity and rotational stiffness of T-joints of GFRP beam-column. The ultimate bearing capacity of joints increases with the increase of row spacing of bolt, decreases with the increase of end spacing of bolt, and first increases and then decreases with the increase of row number of bolt. The rotational stiffness increases first and then decreases with the increase of row distance and end distance. In the range of parameters analyzed in this paper, the T-joints of GFRP beam-column can obtain better mechanical properties by angle steel connection with two rows of bolts, and it is reasonable to control the row spacing between 45 mm and 50 mm and the end spacing between 55 mm.

Key words: T-joint of GFRP beam-column, angle steel connection, carrying capacity, rotational stiffness, mechanical property

CLC Number:

TB332

GU Jing, ZONG Zhongling, XIE Qinghai, LI Keke, LI Meng. Study on behavior of GFRP beam-to-column T-joints based on angle steel connection[J]. COMPOSITES SCIENCE AND ENGINEERING, 2024, 0(7): 53-61.

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