Experimental research on seismic behavior of beam-column combination components with steel reinforced

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Journal of Vibration and Shock ›› 2016, Vol. 35 ›› Issue (22) : 17-23.

YANG Li-jun1, 2, DENG Zhi-heng1, FENG Chao1, CHEN Kong1

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Abstract

A new type of frame joint with steel reinforced concrete (SRC) column-reinforced concrete beam encased steel truss is put forward. Reversed cyclic loading tests on eight specimens are conducted to intensively investigate the seismic behavior of the beam-column combination components. Failure process of eight frame joints under low-cyclic reversed loading is observed and recorded. And the load-displacement hysteretic loops, shear behavior of the joint core, skeleton, the load-intersection angle hysteretic loops etc. of the test subassemblies are tested. Then the seismic behaviors such as the ductility, energy dissipation capacity, and strength and stiffness degradations are analyzed. The influence factors, such as steel proportion, axial compression ratio and size of angle iron’ web member, on the mechanical performance of joints are discussed. The results indicate that the joints with SRC column-reinforced concrete beam encased steel truss have good ductility and energy dissipation capacity. It provides theoretical basis for engineering application of this kind of structure.

Key words

frame joint / reinforced concrete beam encased steel truss / ductility / energy dissipation capacity / seismic behavior；beam-column combination components

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YANG Li-jun1, 2, DENG Zhi-heng1, FENG Chao1, CHEN Kong1. Experimental research on seismic behavior of beam-column combination components with steel reinforced[J]. Journal of Vibration and Shock, 2016, 35(22): 17-23

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