{"title":"Experimental study of failure of glulam-concrete composite beams","authors":"Tamás Juhász, Yishi Lee, Rose Holtzman, J. Balogh","doi":"10.1556/606.2023.00946","DOIUrl":null,"url":null,"abstract":"This paper is dedicated to the memory of Dr. Miklós Iványi, who instilled in the authors an appreciation for experimental investigations, which are foundational to understanding material and structural behavior. Timber-concrete composite structures are increasingly adopted for new buildings due to their favorable sustainability parameters and the increased availability of cross laminated timber. For larger spans, however, solid timber floors lead to higher timber volumes and the use of glulam beams may become necessary for a more efficient use of wood. This paper presents laboratory tests of glulam-concrete composite beams and is the first in a series of two papers on investigating the associated failure mechanisms. Three full-scale glulam-concrete beam specimens were studied. The glulam and concrete are monolithically interconnected using a continuous layer of adhesive. Shear reinforcement was added to the glulam beams to allow for failure mode control. Static load tests to failure were conducted along with acoustic emission monitoring to track the progression of the failure. The results indicate that the shear reinforcement of the glulam layer affects the load capacity of the composite beam through shifting the failure from a shear to a tension failure mode. Similar glulam-concrete beams can enable larger span applications for buildings and bridges while maintaining an attractive sustainability performance.","PeriodicalId":35003,"journal":{"name":"Pollack Periodica","volume":null,"pages":null},"PeriodicalIF":0.0000,"publicationDate":"2024-02-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Pollack Periodica","FirstCategoryId":"1085","ListUrlMain":"https://doi.org/10.1556/606.2023.00946","RegionNum":0,"RegionCategory":null,"ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q3","JCRName":"Engineering","Score":null,"Total":0}
引用次数: 0
Abstract
This paper is dedicated to the memory of Dr. Miklós Iványi, who instilled in the authors an appreciation for experimental investigations, which are foundational to understanding material and structural behavior. Timber-concrete composite structures are increasingly adopted for new buildings due to their favorable sustainability parameters and the increased availability of cross laminated timber. For larger spans, however, solid timber floors lead to higher timber volumes and the use of glulam beams may become necessary for a more efficient use of wood. This paper presents laboratory tests of glulam-concrete composite beams and is the first in a series of two papers on investigating the associated failure mechanisms. Three full-scale glulam-concrete beam specimens were studied. The glulam and concrete are monolithically interconnected using a continuous layer of adhesive. Shear reinforcement was added to the glulam beams to allow for failure mode control. Static load tests to failure were conducted along with acoustic emission monitoring to track the progression of the failure. The results indicate that the shear reinforcement of the glulam layer affects the load capacity of the composite beam through shifting the failure from a shear to a tension failure mode. Similar glulam-concrete beams can enable larger span applications for buildings and bridges while maintaining an attractive sustainability performance.
本文是对 Miklós Iványi 博士的纪念,是他让作者对实验研究产生了浓厚的兴趣,而实验研究是理解材料和结构行为的基础。由于木材-混凝土复合结构具有良好的可持续发展参数,而且交叉层压木材的供应量越来越大,因此越来越多的新建筑采用这种结构。然而,对于跨度较大的建筑,实木地板会导致木材用量增加,为了更有效地利用木材,可能有必要使用胶合梁。本文介绍了胶合木-混凝土复合梁的实验室测试,是研究相关失效机制的两篇系列论文中的第一篇。研究了三个全尺寸胶合木-混凝土梁试样。胶合木和混凝土通过一层连续的粘合剂整体连接在一起。胶合梁上增加了剪力加固,以便对破坏模式进行控制。在进行静载荷试验直至破坏的同时,还进行了声发射监测,以跟踪破坏的进展情况。结果表明,胶合层的剪切加固会影响复合梁的承载能力,使其从剪切失效模式转变为拉伸失效模式。类似的胶合层-混凝土梁可用于跨度更大的建筑和桥梁,同时保持极具吸引力的可持续发展性能。
期刊介绍:
Pollack Periodica is an interdisciplinary, peer-reviewed journal that provides an international forum for the presentation, discussion and dissemination of the latest advances and developments in engineering and informatics. Pollack Periodica invites papers reporting new research and applications from a wide range of discipline, including civil, mechanical, electrical, environmental, earthquake, material and information engineering. The journal aims at reaching a wider audience, not only researchers, but also those likely to be most affected by research results, for example designers, fabricators, specialists, developers, computer scientists managers in academic, governmental and industrial communities.