Experimental study on seismic behavior of new steel truss coupling beams

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Journal of Vibration and Shock ›› 2012, Vol. 31 ›› Issue (1) : 76-81.

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Experimental study on seismic behavior of new steel truss coupling beams

Deng Zhi-heng; Lin Qian; Hu Qiang; Pan Zhi-ming; Xu Dong-xiao

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Abstract

Based on the pseudo-static test of 8 small span-depth ratio steel truss coupling beams, the composite coupling beams' failure characteristics, shear-bearing capacity, deformation capacity, hysteretic curve, Skeleton, ductility, energy dissipation, rigidity decline and reasonable truss style are analyzed. The test results show that: The steel beams with cross abdominal trusses have bigger shear-bearing capacity and better ductility and energy dissipation capability than those beams without cross abdominal trusses. A better bearing capacity can be obtained when span-depth ratio is smaller and stiffness is bigger .The two design methods of the beams’ ends, pre-buried steel plates and buried steel chord members in concrete, are available and easier to construct than reinforced coupling beams . The steel truss coupling beams have fairly good mechanisms and seismic behavior.

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steel truss / coupling beam / energy dissipation / ductility

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Deng Zhi-heng;Lin Qian;Hu Qiang;Pan Zhi-ming;Xu Dong-xiao. Experimental study on seismic behavior of new steel truss coupling beams[J]. Journal of Vibration and Shock, 2012, 31(1): 76-81