PSI - Issue 64

Fernando Nunes et al. / Procedia Structural Integrity 64 (2024) 1081–1088 Author name / Structural Integrity Procedia 00 (2019) 000 – 000

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8. Anchoring and Inspection Structure with Clamped Joints Internal Installation - System description This article explores the feasibility of implementing internal maintenance structures within bridges, aiming to introduce innovative solutions that enhance maintenance procedures and ensure long-term structural integrity. Utilizing Finite Element (FE) simulations across a spectrum of conditions, the study evaluates these internal structures' practicality, efficiency, and resilience (Fig.5), considering factors such as weight, impact on structural performance, ease of installation, and cost-effectiveness. The FE simulations are designed to identify the most suitable materials and designs for the maintenance structures, alongside the optimal anchoring and installation techniques, to minimize disruption to the bridge’s functionality. Special focus is given to the adaptability of the maintenance structures across various bridge types, encompassing differences in design, dimensions, and construction materials. This research segment not only aims to augment existing findings but also to pioneer new avenues in the structural engineering domain applied to bridge infrastructure. Ultimately, the study intends to offer a comprehensive set of practical guidelines and technical recommendations for designing and implementing internal maintenance structures, thereby contributing to the sustainability and safety of transportation infrastructure.

Fig. 5. Detailed view of the anchorage structure on the bridge, highlighting the internally fixed joints for maintenance.

9. Structural Analysis and Integration of Maintenance Platforms under Simulated Operational Condition In the development of the mechanical fixation system under study, a strategic assembly of components was utilized to ensure structural integrity and reversibility, which are crucial considerations for interventions in historic architecture. At the core of this system are clamps, employed to secure metal spacers that play an essential role in preserving the condition of the rivets in the historic structure (Fig.6). The foundation of the system is a metal plate, 3 mm thick, designed with openings for screw fixation. This setup allows for the adjustable positioning of metal spacers, ensuring a precise fit between the existing rivets in the historic structure, thus offering versatility without necessitating structural modifications.

Fig. 6. Progressive stages of a mechanical joining process using clamps, IPE80 profile, head screws or rivets, and a set of screws, nuts, and washers on a metal sheet.

Metal spacers are adjusted and affixed to the historic structure using a combination of screws, nuts, washers, and clamps, establishing a secure base for the incorporation of the IPE80 profile (Fig.6). This profile is placed on the plate and fastened with clamps, endowing the system with a robust structure capable of withstanding significant mechanical