摘要
对几何参数和纵筋配筋率相同,连接形式不同的两种夹芯托梁在相同加载方式下的受力性能进行试验研究。研究结果表明:夹芯托梁的破坏模式、裂缝的形态及发展规律、极限荷载、荷载-挠度曲线,与同配筋率的钢筋混凝土整浇参考梁相似。在夹芯托梁中,纵筋起到了主要的受力作用,而连接筋和销键梁钢筋并未承受太大的荷载。连接筋和销键梁保证了夹芯砖墙与钢筋混凝土托梁充分咬接共同作用,使得夹芯托梁具有较好的整体性,从而夹芯托梁中的砖墙挠度与混凝土梁挠度有较好的一致性。
Mechanical properties of two kinds of sandwich beams were tested.The geometric parameters and the ratio of longitudinal bar of the beams were the same,but the types of connections were different.The result indicated that the failure mode,crack shape and development law,ultimate load,and curve of load-deflection were the same as that of the whole poured beam,which had the equal ratio of longitudinal bar.Longitudinal bar played an important role to resist the loads in sandwich beam, while the link steel bar and pin key steel bar did not lend much support to resist the loads. What the link steel bar and pin key steel bar done was that they made the brick wall and concrete beam work together, whose deflections were the same.
出处
《工业建筑》
CSCD
北大核心
2009年第8期8-12,共5页
Industrial Construction
关键词
砖混结构
夹芯托梁
承载力
sandwich beam
brick-concrete structure
bearing capacity
