{"title":"钢-混凝土组合节点界面破坏机理的数值分析","authors":"Pankaj Kumar, Arnav Anuj Kasar, Sandeep Chaudhary","doi":"10.1007/s13296-023-00766-8","DOIUrl":null,"url":null,"abstract":"<div><p>The formation of steel–concrete composites using individual steel and concrete elements is commonly ensured by two different connection techniques at connected interface level: mechanical connectors and structural adhesives. Among these two connection techniques, the use of structural adhesive for bonding steel and concrete elements is rapidly increasing; primarily owing to uniform transfer of stresses over the entire bonded area. The behaviour of bonded connection with change in adhesive bond layer thickness at the level of composite interface are analysed using finite element analysis under static loading to examine the ultimate strength and shear stresses. The failure governing parameters of bonded connections, such as engendered stresses in terms of von-mises and hydrostatic stresses at bearing ends of the composite interface along with changes in failure patterns (from adhesive to cohesive) are discussed. Also, the maximum engendered stresses along the failure plane for different bond layer thicknesses are examined. In case of one mm bond layer thickness the variation in shear stresses is very high along (39.28 MPa to 23.15 MPa) and perpendicular (34.62 MPa to 16.97 MPa) to the loading direction. While, the specimen with three mm thickness exhibits maximum load bearing capacity, it also has relatively smaller variation in shear stresses along (34.91 MPa to 21.72 MPa) and perpendicular (32.72 MPa to 17.20 MPa), which shows uniformity of stresses with increase in thickness. However, a further increase in the thickness of the bond layer results in reduction in the shear capacity of the specimen.</p></div>","PeriodicalId":596,"journal":{"name":"International Journal of Steel Structures","volume":null,"pages":null},"PeriodicalIF":1.1000,"publicationDate":"2023-07-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://link.springer.com/content/pdf/10.1007/s13296-023-00766-8.pdf","citationCount":"0","resultStr":"{\"title\":\"Numerical Analysis of Interfacial Failure Mechanism in Bonded Steel–Concrete Composite Connections\",\"authors\":\"Pankaj Kumar, Arnav Anuj Kasar, Sandeep Chaudhary\",\"doi\":\"10.1007/s13296-023-00766-8\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"<div><p>The formation of steel–concrete composites using individual steel and concrete elements is commonly ensured by two different connection techniques at connected interface level: mechanical connectors and structural adhesives. Among these two connection techniques, the use of structural adhesive for bonding steel and concrete elements is rapidly increasing; primarily owing to uniform transfer of stresses over the entire bonded area. The behaviour of bonded connection with change in adhesive bond layer thickness at the level of composite interface are analysed using finite element analysis under static loading to examine the ultimate strength and shear stresses. The failure governing parameters of bonded connections, such as engendered stresses in terms of von-mises and hydrostatic stresses at bearing ends of the composite interface along with changes in failure patterns (from adhesive to cohesive) are discussed. Also, the maximum engendered stresses along the failure plane for different bond layer thicknesses are examined. In case of one mm bond layer thickness the variation in shear stresses is very high along (39.28 MPa to 23.15 MPa) and perpendicular (34.62 MPa to 16.97 MPa) to the loading direction. While, the specimen with three mm thickness exhibits maximum load bearing capacity, it also has relatively smaller variation in shear stresses along (34.91 MPa to 21.72 MPa) and perpendicular (32.72 MPa to 17.20 MPa), which shows uniformity of stresses with increase in thickness. However, a further increase in the thickness of the bond layer results in reduction in the shear capacity of the specimen.</p></div>\",\"PeriodicalId\":596,\"journal\":{\"name\":\"International Journal of Steel Structures\",\"volume\":null,\"pages\":null},\"PeriodicalIF\":1.1000,\"publicationDate\":\"2023-07-12\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"https://link.springer.com/content/pdf/10.1007/s13296-023-00766-8.pdf\",\"citationCount\":\"0\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"International Journal of Steel Structures\",\"FirstCategoryId\":\"5\",\"ListUrlMain\":\"https://link.springer.com/article/10.1007/s13296-023-00766-8\",\"RegionNum\":4,\"RegionCategory\":\"工程技术\",\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"Q3\",\"JCRName\":\"CONSTRUCTION & BUILDING TECHNOLOGY\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"International Journal of Steel Structures","FirstCategoryId":"5","ListUrlMain":"https://link.springer.com/article/10.1007/s13296-023-00766-8","RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q3","JCRName":"CONSTRUCTION & BUILDING TECHNOLOGY","Score":null,"Total":0}
Numerical Analysis of Interfacial Failure Mechanism in Bonded Steel–Concrete Composite Connections
The formation of steel–concrete composites using individual steel and concrete elements is commonly ensured by two different connection techniques at connected interface level: mechanical connectors and structural adhesives. Among these two connection techniques, the use of structural adhesive for bonding steel and concrete elements is rapidly increasing; primarily owing to uniform transfer of stresses over the entire bonded area. The behaviour of bonded connection with change in adhesive bond layer thickness at the level of composite interface are analysed using finite element analysis under static loading to examine the ultimate strength and shear stresses. The failure governing parameters of bonded connections, such as engendered stresses in terms of von-mises and hydrostatic stresses at bearing ends of the composite interface along with changes in failure patterns (from adhesive to cohesive) are discussed. Also, the maximum engendered stresses along the failure plane for different bond layer thicknesses are examined. In case of one mm bond layer thickness the variation in shear stresses is very high along (39.28 MPa to 23.15 MPa) and perpendicular (34.62 MPa to 16.97 MPa) to the loading direction. While, the specimen with three mm thickness exhibits maximum load bearing capacity, it also has relatively smaller variation in shear stresses along (34.91 MPa to 21.72 MPa) and perpendicular (32.72 MPa to 17.20 MPa), which shows uniformity of stresses with increase in thickness. However, a further increase in the thickness of the bond layer results in reduction in the shear capacity of the specimen.
期刊介绍:
The International Journal of Steel Structures provides an international forum for a broad classification of technical papers in steel structural research and its applications. The journal aims to reach not only researchers, but also practicing engineers. Coverage encompasses such topics as stability, fatigue, non-linear behavior, dynamics, reliability, fire, design codes, computer-aided analysis and design, optimization, expert systems, connections, fabrications, maintenance, bridges, off-shore structures, jetties, stadiums, transmission towers, marine vessels, storage tanks, pressure vessels, aerospace, and pipelines and more.