Numerical simulation on progressive collapse behavior of bolted beam-column joints with through diaphragm

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Journal of Vibration and Shock ›› 2015, Vol. 34 ›› Issue (10) : 68-75.

QIN Xi 2，WANG Wei 1,2

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Abstract

This paper presents numerical simulation results of bolted I-beam-to-RHS column joints with through diaphragm against progressive collapse. Three types of joints including narrow cover plate joint, wide cover plate joint and wide cover plate equipped with local strengthened bottom flange joint are investigated. The load transfer mechanisms are clarified and the load-carrying capacity is evaluated. The results indicate that moving the initial position of fracture failure beyond the column by increasing the size of cover plate can enhance the carrying capacity of the joints. At the same time, increasing the width of flange and cover plate at connection simultaneously may result in bolt bearing failure, thus delaying the occurrence of cracking in plate, which is conductive to the development of catenary action and makes a big difference in improving the carrying capacity of joints.

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progressive collapse / through diaphragm joint / bolted connection

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QIN Xi 2，WANG Wei 1,2. Numerical simulation on progressive collapse behavior of bolted beam-column joints with through diaphragm[J]. Journal of Vibration and Shock, 2015, 34(10): 68-75

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