{"title":"大跨度半钢板-钢筋混凝土空心屋面结构及施工性能研究","authors":"M. Diao, Yi Li, Xinzheng Lu, H. Guan, Yun-Lun Sun","doi":"10.18057/IJASC.2019.15.1.3","DOIUrl":null,"url":null,"abstract":"This paper proposes a new large span half steel-plate-reinforced concrete (H-SC) hollow roof structure for nuclear power plants. The roof composes of 23 I-shaped H-SC beams. Each H-SC beam consists of a steel plate assembly (a bottom plate, a web plate and a short top plate), which is cast inside an I-shaped reinforced concrete beam. This novel system not only has an equivalently high bearing capacity, stiffness and lower gravity load comparing with conventional RC roof, but also can be conveniently constructed by using the bottom plates as formworks. The numerical simulation was conducted to demonstrate its mechanical capacities and the influence of construction process. Firstly, a finite element (FE) model for the H-SC composes was built and a one-third scaled 12 meters large-span H-SC beam was tested to validate the proposed FE model and analyze the steel-concrete-interface bond-slip. Then, the numerical simulation was conducted to assess the effect of the construction process on the mechanical performance of the entire roof structure, in which the deactivation element and trace element techniques were used to simulate the deformation induced by the construction process. The results show that the deflection induced by the construction process accounts for 87% of the final deflection.","PeriodicalId":56332,"journal":{"name":"Advanced Steel Construction","volume":null,"pages":null},"PeriodicalIF":1.7000,"publicationDate":"2019-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":"{\"title\":\"THE STRUCTURAL AND CONSTRUCTION PERFORMANCES OF A LARGE-SPAN HALF STEEL-PLATE-REINFORCED CONCRETE HOLLOW ROOF\",\"authors\":\"M. Diao, Yi Li, Xinzheng Lu, H. Guan, Yun-Lun Sun\",\"doi\":\"10.18057/IJASC.2019.15.1.3\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"This paper proposes a new large span half steel-plate-reinforced concrete (H-SC) hollow roof structure for nuclear power plants. The roof composes of 23 I-shaped H-SC beams. Each H-SC beam consists of a steel plate assembly (a bottom plate, a web plate and a short top plate), which is cast inside an I-shaped reinforced concrete beam. This novel system not only has an equivalently high bearing capacity, stiffness and lower gravity load comparing with conventional RC roof, but also can be conveniently constructed by using the bottom plates as formworks. The numerical simulation was conducted to demonstrate its mechanical capacities and the influence of construction process. Firstly, a finite element (FE) model for the H-SC composes was built and a one-third scaled 12 meters large-span H-SC beam was tested to validate the proposed FE model and analyze the steel-concrete-interface bond-slip. Then, the numerical simulation was conducted to assess the effect of the construction process on the mechanical performance of the entire roof structure, in which the deactivation element and trace element techniques were used to simulate the deformation induced by the construction process. The results show that the deflection induced by the construction process accounts for 87% of the final deflection.\",\"PeriodicalId\":56332,\"journal\":{\"name\":\"Advanced Steel Construction\",\"volume\":null,\"pages\":null},\"PeriodicalIF\":1.7000,\"publicationDate\":\"2019-01-01\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"\",\"citationCount\":\"0\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"Advanced Steel Construction\",\"FirstCategoryId\":\"5\",\"ListUrlMain\":\"https://doi.org/10.18057/IJASC.2019.15.1.3\",\"RegionNum\":3,\"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":"Advanced Steel Construction","FirstCategoryId":"5","ListUrlMain":"https://doi.org/10.18057/IJASC.2019.15.1.3","RegionNum":3,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q3","JCRName":"CONSTRUCTION & BUILDING TECHNOLOGY","Score":null,"Total":0}
THE STRUCTURAL AND CONSTRUCTION PERFORMANCES OF A LARGE-SPAN HALF STEEL-PLATE-REINFORCED CONCRETE HOLLOW ROOF
This paper proposes a new large span half steel-plate-reinforced concrete (H-SC) hollow roof structure for nuclear power plants. The roof composes of 23 I-shaped H-SC beams. Each H-SC beam consists of a steel plate assembly (a bottom plate, a web plate and a short top plate), which is cast inside an I-shaped reinforced concrete beam. This novel system not only has an equivalently high bearing capacity, stiffness and lower gravity load comparing with conventional RC roof, but also can be conveniently constructed by using the bottom plates as formworks. The numerical simulation was conducted to demonstrate its mechanical capacities and the influence of construction process. Firstly, a finite element (FE) model for the H-SC composes was built and a one-third scaled 12 meters large-span H-SC beam was tested to validate the proposed FE model and analyze the steel-concrete-interface bond-slip. Then, the numerical simulation was conducted to assess the effect of the construction process on the mechanical performance of the entire roof structure, in which the deactivation element and trace element techniques were used to simulate the deformation induced by the construction process. The results show that the deflection induced by the construction process accounts for 87% of the final deflection.
期刊介绍:
The International Journal of Advanced Steel Construction provides a platform for the publication and rapid dissemination of original and up-to-date research and technological developments in steel construction, design and analysis. Scope of research papers published in this journal includes but is not limited to theoretical and experimental research on elements, assemblages, systems, material, design philosophy and codification, standards, fabrication, projects of innovative nature and computer techniques. The journal is specifically tailored to channel the exchange of technological know-how between researchers and practitioners. Contributions from all aspects related to the recent developments of advanced steel construction are welcome.