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Flexural Behavior of Reinforced Lightweight Aggregate Concrete Beams under Cyclic Loading
|關鍵字:||lightweight aggregate concrete;輕質骨材混凝土;cyclic load;flexural behavior;ductility;energy dissipation;反覆荷重;撓曲行為;延展性;能量消散||出版社:||土木工程學系||摘要:||
The flexural behavior of reinforced lightweight aggregate concrete beam (R.L.C.) under cyclic loading is investigated in this study. The results are compared to corresponding reinforced concrete beam (R.C.). A total of 44 beam specimens were made. The parameters included concrete type, concrete strength, reinforcement ratio, spacing of shear reinforcement and section size.
The test results show that R.L.C. beams have same or less ductility than R.C. beams. For specimens of reinforcement ratio smaller than 2.88%. Both R.L.C. and R.C. beams. increase of concrete strength will increase the ductility. For specimens of reinforcement ratio smaller than ρmax . Both at lower and higher concrete strength level, the decaying of strength and stiffness of R.L.C. beams appear milder than those of R.C. beams. By increase of concrete strength. The energy dissipation capacity of R.L.C. beams were obviously increased. When specimens were tend to compression fractured. The decaying of strength and stiffness of R.L.C. beams are similar or poor than those of R.C. beams. The energy dissipation capacity of R.L.C. beams are also similar or poor than those of R.C. beams. Different spacing of shear reinforcement have no obviously effect to the beams.
|Appears in Collections:||土木工程學系所|
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