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No.16 (1978/09) >

Title :断続合成桁の曲げ性状について
Title alternative :Bending Behavior of Partial Composite Beams
Authors :浜田, 純夫
有住, 康則
Authors alternative :Hamada, Sumio
Arizumi, Yasunori
Issue Date :1-Sep-1978
Abstract :Composite beams with no shear connectors in the negative moment region have been practiced in the United Stares, althoug they are not specified in the specification of highway bridges in Japan. A few studies on the composite beams with no shear connectors, called partial composite beams herein, have been conducted by Y. Maeda, the authers, and the athers. Y. Maeda tested several continuous composite beams with patial interaction in the negative bending region and discussed about the shear force acting on shear connectors at the ends of the composite region, and the stress of reinforcing bars in the concrete slab in a negative moment region. The authers conducted several tests of isolated composite beams under negative bending. The test beams consist of complete composite beams and partial composite beams where the slab and steel beam are connected at the ends by means of shear connectors. The test result shows that the reinforcement in the slab of the partial composite beams are effective, and that the beams are more flexible than the complete composite beams. The present paper gives dicussions on the stress produced in the slab and the stiffness of partial composite beams from the theoretical analysis. The results show the following conclusions. 1). The stress in the concrete slab for the partial composite beam is a half of that for complete composite beams. 2). The lower flange stress does not increase so much comparing with the decrease of the slab stress. 3). Deflection and stress ratios of the partial composite beam to the complete composite beam depend mainly on the effective slab area. 4). Experimental results conducted by the authers well coinside with the theoretical results discussed herein.
Type Local :紀要論文
ISSN :0387-429X
Publisher :琉球大学理工学部
URI :http://hdl.handle.net/20.500.12000/27455
Citation :琉球大学理工学部紀要. 工学篇 = Bulletin of Science & Engineering Division, University of the Ryukyus. Engineering no.16 p.43 -51
Appears in Collections:No.16 (1978/09)

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