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標題: 鋼筋輕質骨材混凝土牆之力學行為
Mechanical Behavior of Reinforced Lightweight Aggregate Concrete Wall
作者: 陳俊釗
chen, jyun-jhao
關鍵字: Lightweight Aggregate Concrete
出版社: 土木工程學系
摘要: 本文旨在研究鋼筋輕質骨材混凝土牆於水平荷重作用下之力學行為,並與鋼筋常重骨材混凝土牆加以比較,探討在工程實用上前者取代後者之可行性。研究之參數包含鋼筋間距、粗骨材種類及牆體尺寸分別對強度、勁度、延展性及破壞模式之影響。 研究結果顯示鋼筋輕質骨材混凝土(R.L.A.C)牆與常重骨材混凝土(R.N.A.C.)牆之荷重能力、破壞模式及延展性等行為相似。當鋼筋間距愈小,R.L.A.C牆之降伏強度與極限強度愈高,但延展性愈差。鋼筋間距不同,對牆試體的開裂強度影響不大。就牆體尺寸效應而言,牆之寬度愈大則勁度愈大。 所有研究結果均顯示,在實用上輕質骨材混凝土可以取代常重混凝土使用於牆體之結構中。
This paper aims to investigate the mechanical behavior of reinforced lightweight aggregate concrete (R.L.A.C.) wall under horizontal loading. Three test parameters, such as spacing of reinforcing bars, types of coarse aggregates and sizes of reinforced concrete walls, were considered to research the effects on the shear strength, stiffness, ductility, and failure modes of walls. The test results were compared to those of corresponding reinforced normal aggregate concrete (R.L.A.C.) walls to evaluate the feasibility of R.L.A.C. walls in practical engineering. The test results show that the shear strength, ductility, and failure modes of R.L.A.C. walls are similar to N.L.A.C. wall. When spacing of reinforcing bars is smaller, the yield and ultimate strength of R.L.A.C wall are higher, but the R.L.A.C. walls have the disadvantage of ductility. The spacing of reinforcing bars has no obvious influence on the first crack of the walls. In regard to wall size effects, an increase of wall width will result in an increase of wall stiffness. As a whole, R.L.A.C. can replace R.N.A.C. in practical wall constructions.
Appears in Collections:土木工程學系所



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