Flexural and Shear Strength of Composite Lintels in Glass-Fiber-Reinforced Gypsum Wall Constructions
Flexural and Shear Strength of Composite Lintels in Glass-Fiber-Reinforced Gypsum Wall Constructions
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DOI：
10.1061/(asce)0899-1561(2006)18:3(415
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发表时间：
2006-06
影响因子：
3.2
通讯作者：
Yufei Wu;M. P. Dare
中科院分区：
文献类型：
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作者：
Yufei Wu;M. P. Dare
复合门楣形成于玻璃纤维增强石膏 (GFRG) 墙体结构的门窗开口上方。这些门楣是通过将钢筋混凝土填充到 GFRG 墙的空心芯中而建造的。 GFRG面板本身是一种由石膏和增强玻璃纤维组成的复合材料。当填充钢筋混凝土时，过梁的结构作用源自 GFRG 面板和填充混凝土之间的进一步复合作用。进行实验梁测试来研究这些复合材料过梁的弯曲和剪切行为。获得并分析了典型的失效模式和相应的极限强度。根据测试结果，提出了弯曲和剪切强度的理论设计模型和指南。
Composite lintels are formed above the door and window openings of glass-fiber-reinforced gypsum (GFRG) wall constructions. These lintels are constructed by filling reinforced concrete into the hollow cores of the GFRG walls. The GFRG panel itself is a composite material composed of gypsum plaster and the reinforcing glass fiber. When filled with reinforced concrete the structural action of the lintels is derived from further composite action between the GFRG panel and the infill concrete. Experimental beam testing was conducted to study the flexural and shear behavior of these composite lintels. Typical failure modes and corresponding ultimate strengths were obtained and analyzed. Based on the test results, theoretical design models and guidelines are proposed for both the flexural and shear strengths.