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CFT Connections: State-of-the-art Report and Numerical Validation by 3D FEM
Wilches Jose,Leon Roberto,Santa Maria Hernán,Graterol Anibal 한국강구조학회 2024 International Journal of Steel Structures Vol.24 No.4
Connections between concrete filled members are common in tall buildings, bridges, and offshore structures because of their robust structural performance. While extensive research has been done on isolated concrete-filled structural members, relatively little research has been conducted on composite connection regions. This article first describes a database on experimental/analytical investigations on concrete-filled connections comprising 135 tests. It then develops a generic numerical model capable of capturing the entire range of behavior of these connections, including local buckling of the steel tubes and friction/contact resistance between steel and concrete. The model was calibrated against a single test and its performance was verified against three other very different tests. The results indicate that the four models can track well the strength and stiffness of the specimens up to ultimate and predict well different failure patterns. Comparisons of the experimental and numerical load-deformation curves show very good agreement in predicting the strength and deformations at which different behaviors arise, and that performance is controlled primarily by both the strength of the concrete and the confinement effect of the steel tube in the connection area.
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The role of vehicular applications in the design of future 6G infrastructures
Jorge Gallego-Madrid,Ramon Sanchez-Iborra,Jordi Ortiz,Jose Santa 한국통신학회 2023 ICT Express Vol.9 No.4
A great lack of 5G design is the traditional bottom-up development of network evolution, which has not effectively considered the requirements of applications and, particularly, vehicle to everything (V2X) applications. This paper provides a service-centric approach towards 6G V2X, with a concise overview of the upcoming hyper-connected vehicular ecosystem and its integration in the whole 6G fabric, analyzing its particular infrastructure needs, as a way to reach key performance indicators (KPIs). We also present a 6G-oriented platform design able to manage the life-cycle of V2X applications across different domains by means of intelligent orchestration decisions.
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