Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Failure mechanism and failure patterns of SCS composite beams with steel-fiber-reinforced UHPC
Highlights Static tests of SCS composite beam with UHPC and without cross ties are carried out. Effect of cross ties on composite action between steel plate and concrete is studied. Influence mechanism of match between steel plate and core concrete is investigated. Contribution coefficients of steel plates to ultimate strength are proposed. Failure patterns judgment regulations of SCS composite beams with UHPC are explored.
Abstract Steel–concrete–steel (SCS) composite structures are widely applied in nuclear power plants, tunnels, and offshores. In this study, steel-fiber-reinforced ultra-high performance concrete (UHPC) is adopted as a core material to improve the structural behaviors of SCS composite structures. A series of static tests on SCS composite beams with UHPC under shear loads are performed to analyze failure patterns and failure mechanism. Results indicate that match relation between steel plates and core UHPC has an important effect on the structural behavior of SCS composite beams with UHPC; furthermore, effects of cross ties on the composite action between steel plates and core materials cannot be neglected. In addition, three-dimensional finite element (FE) models for SCS composite beams with UHPC are established and verified to investigate the effects of match relation between steel plates and core UHPC on the failure mechanism. Based on the experimental and FE simulation results, contribution coefficients of steel plates are proposed to reflect the composite action between steel plates and core materials for SCS composite beams with UHPC. Moreover, the judgment method of failure patterns for SCS composite beams with UHPC is studied. Finally, analytical method to predict the ultimate resistance for SCS composite beams with UHPC is presented and validated by comparison with ACI 349-06 and JEAG 4816 codes.
Failure mechanism and failure patterns of SCS composite beams with steel-fiber-reinforced UHPC
Highlights Static tests of SCS composite beam with UHPC and without cross ties are carried out. Effect of cross ties on composite action between steel plate and concrete is studied. Influence mechanism of match between steel plate and core concrete is investigated. Contribution coefficients of steel plates to ultimate strength are proposed. Failure patterns judgment regulations of SCS composite beams with UHPC are explored.
Abstract Steel–concrete–steel (SCS) composite structures are widely applied in nuclear power plants, tunnels, and offshores. In this study, steel-fiber-reinforced ultra-high performance concrete (UHPC) is adopted as a core material to improve the structural behaviors of SCS composite structures. A series of static tests on SCS composite beams with UHPC under shear loads are performed to analyze failure patterns and failure mechanism. Results indicate that match relation between steel plates and core UHPC has an important effect on the structural behavior of SCS composite beams with UHPC; furthermore, effects of cross ties on the composite action between steel plates and core materials cannot be neglected. In addition, three-dimensional finite element (FE) models for SCS composite beams with UHPC are established and verified to investigate the effects of match relation between steel plates and core UHPC on the failure mechanism. Based on the experimental and FE simulation results, contribution coefficients of steel plates are proposed to reflect the composite action between steel plates and core materials for SCS composite beams with UHPC. Moreover, the judgment method of failure patterns for SCS composite beams with UHPC is studied. Finally, analytical method to predict the ultimate resistance for SCS composite beams with UHPC is presented and validated by comparison with ACI 349-06 and JEAG 4816 codes.
Failure mechanism and failure patterns of SCS composite beams with steel-fiber-reinforced UHPC
Lin, Youzhu (Autor:in) / Yan, Jiachuan (Autor:in) / Wang, Zefang (Autor:in) / Fan, Feng (Autor:in) / Yang, Yue (Autor:in) / Yu, Zhiwei (Autor:in)
Engineering Structures ; 211
04.03.2020
Aufsatz (Zeitschrift)
Elektronische Ressource
Englisch
I-shaped ECC/UHPC composite beams reinforced with steel bars and BFRP sheets
| DOAJ | 2023