材料科学
复合数
复合材料
结构工程
夹层结构复合材料
偏转(物理)
刚度
极限抗拉强度
抗压强度
水泥
梁(结构)
抗弯强度
剪切(地质)
工程类
光学
物理
作者
Jia-Bao Yan,J.Y. Richard Liew,Min-Hong Zhang,Jun-Yan Wang
出处
期刊:Steel and Composite Structures
[Techno-Press]
日期:2014-12-01
卷期号:17 (6): 907-927
被引量:34
标识
DOI:10.12989/scs.2014.17.6.907
摘要
Ultra-lightweight cement composite (ULCC) with a compressive strength of 60 MPa and density of $1450kg/m^3$ has been developed and used in the steel-concrete-steel (SCS) sandwich structures. ULCC was adopted as the core material in the SCS sandwich composite beams to reduce the overall structural weight. Headed shear studs working in pairs with overlapped lengths were used to achieve composite action between the core material and steel face plates. Nine quasi-static tests on this type of SCS sandwich composite beams were carried out to evaluate their ultimate strength performances. Different parameters influencing the ultimate strength of the SCS sandwich composite beams were studied and discussed. Design equations were developed to predict the ultimate resistance of the cross section due to pure bending, pure shear and combined action between shear and moment. Effective stiffness of the sandwich composite beam section is also derived to predict the elastic deflection under service load. Finally, the design equations were validated by the test results.
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