2024-03-28T12:27:15Z
https://u-ryukyu.repo.nii.ac.jp/oai
oai:u-ryukyu.repo.nii.ac.jp:02005272
2022-10-31T02:36:09Z
1642837622505:1642837855274:1642837856903
1642838403551:1642838406845
断続合成桁の疲労性状について
Fatigue Behavior of Partial Composite Beams
浜田, 純夫
有住, 康則
名護, 健一
Hamada, Sumio
Arizumi, Yasunori
Nago, Kenichi
Partial Composite Beam
Fatigue Test
Bending Stiffness
Crack Width
Stress in Reinforcing Bars
Partial composite beams have been practiced in the United States and Canada, but the partial composite beams with partly complete interaction in the negative bending region are not included in the highway bridge specifications. However, from theoretical analysis, the stiffness of partial composite beams with partly complete interaction is greater than that of partial composite beams without shear connectors in the negative bending region and reinforcement strains do not significantly increase comparing with the increase of the bending stiffness. Three composite beams are tested in order to provide additional information on the bending behavior of the partial composite beams. The test beams varied in terms of shear connector spacing. Special attentions are paid to the bending stiffness, efficiency of reinforcing bars, crack pattern, maximum crack width, residual crack width, slip and deflection. High cycle loading is applied on the basis of the design load. The following conclusions can be drawn from the present study; (1) Relationships between load and deflection become close to the theoretical ones gradually as increase of the number of loads. (2) The reinforcement in the concrete slab is effective to bending, however the residual reinforcement stresses increase as increase of the number of loads. (3) The residual crack width and maximum crack width at the design load do not increase due to increase of the number of crack. (4) The relationship between maximum crack width and reinforcement stress is approximately linear. (5) Little difference of ultimate strength arises among three composite beams.
紀要論文
http://purl.org/coar/resource_type/c_6501
琉球大学工学部
1981-03
VoR
http://hdl.handle.net/20.500.12000/14689
0389-102X
AN0025048X
琉球大学工学部紀要
21
39
31
jpn
open access