土木工程学报  2021, Vol. 54 Issue (12): 21-31    
  结构工程 本期目录 | 过刊浏览 | 高级检索 |
加筋增强玻璃梁受弯性能试验研究
黄小坤1 崔明哲1 刘强1 段树坤1,2 聂建国2
1. 中国建筑科学研究院, 北京 100013; 2. 清华大学, 北京 100084
Experimental study on the bending performance of reinforced glass beam
Huang Xiaokun1 Cui Mingzhe1 Liu Qiang1 Duan Shukun1,2 Nie Jianguo2
1. China Academy of Building Research, Beijing 100013, China; 2. Tsinghua University, Beijing 100084, China
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摘要 为实现玻璃梁延性化破坏的目标,借鉴钢筋混凝土结构的思路,通过在玻璃梁底部受拉区配置不锈钢的方式制成加筋增强玻璃梁。玻璃开裂后通过不锈钢传递拉力,以形成开裂后承载机制。文章对加筋增强玻璃梁的受弯性能展开试验研究,通过试验,研究试件受弯的受力行为,识别不同破坏形态;通过对试验现象、荷载位移曲线、荷载应变曲线和裂缝发展过程的分析,研究构件在开裂前和开裂后的受力机理;通过定义6个力学性能指标,定量描述加筋增强玻璃梁受弯的力学性能;通过对不同玻璃种类、配筋率、截面高度的加筋增强玻璃梁试件力学性能指标进行对比,识别对加筋增强玻璃梁力学性能有显著影响的因素及其影响规律。研究结果为加筋增强玻璃梁的分析和设计提供试验基础。
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黄小坤 崔明哲 刘强 段树坤 聂建国
关键词 玻璃结构 加筋增强玻璃梁 受弯性能 试验研究 延性化破坏    
Abstract:To achieve ductile failure of glass beams, reinforced glass (RG) beams with stainless steel arranging at their tensile area of the bottom were manufactured, by referring to the principles of reinforced concrete structures. After the breakage of glass panes, the stainless steel can transfer tensile force to offer the high post-breakage load-carrying capacity of RG beams. In this work, an experimental study on the bending performance of RG beams was reported. The mechanical performance and failure modes of RG beams were observed and identified. The pre-breakage and post-breakage load-carrying mechanisms were studied through the test observations, load-displacement curves, load-strain curves and crack developments. Then, the bending performance of RG beams was quantitatively described by defining 6 mechanical indicators, and the influences of glass type, reinforcement ratio and section height on the mechanical indicators were analyzed, so that the major influencing factors on the bending performance of RG beams can be identified. The results provide experimental basis for the design and analysis of RG beams.
Key wordsglass structure    reinforced glass beams (RG beams)    bending performance    experimental study    ductile failure
    
引用本文:   
黄小坤 崔明哲 刘强 段树坤 聂建国. 加筋增强玻璃梁受弯性能试验研究[J]. 土木工程学报, 2021, 54(12): 21-31.
Huang Xiaokun Cui Mingzhe Liu Qiang Duan Shukun Nie Jianguo. Experimental study on the bending performance of reinforced glass beam. 土木工程学报, 2021, 54(12): 21-31.
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http://manu36.magtech.com.cn/Jwk_tmgcxb/CN/     或     http://manu36.magtech.com.cn/Jwk_tmgcxb/CN/Y2021/V54/I12/21
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