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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Fig. 8. Von Mises stress by beam length and screw configuration with trendlines.

The analysis of the behavior of IPE 80 beams under different bolt installation configurations (internal, middle, and external) and length variations (3000 mm, 3500 mm, and 4000 mm) provides insights into stress distribution and deformation capacity (Fig. 8). Beams with internal bolts showed a more robust behavior in bending resistance and deformation minimization under applied loads compared to other configurations. This highlights the importance of a well-planned fixation strategy to optimize structural performance. The linear relationship observed in the analysis of Figure 8, represented by the equation = + , plays a crucial role in understanding the stress behavior of the beams. In this equation, stands for the Von Mises stress, for the beam length, for the trend line slope, and for the y-intercept. This equation reveals how the stress within the beam changes as its length varies, with the slope ( ) indicating the rate of stress increase with beam length and the intercept ( ) reflecting the initial stress level when the beam length is zero. The observed linear relationship suggests that internal bolt configurations are more effective at minimizing stress induction over increased beam lengths. This mathematical insight into the relationship between bolt placement, beam length, and induced stress is invaluable for engineering and optimizing maintenance platforms, as it guides the selection of bolt configurations that promote structural integrity and longevity. Figure 8 demonstrates that Von Mises stresses increase with increasing beam length. The trend lines in Figure 8 further emphasize this relationship, indicating that stress rates are influenced by bolt placement. Internal bolts show a lower stress rate increase than middle and external bolts, thus providing better performance in maintaining structural integrity as beam length increases. 11. Conclusions This study developed and evaluated a clamped joint anchoring and inspection system to maintain historic metal structures. The dual approach, suitable for internal and external installations, proved effective in minimizing impacts on structural integrity while preserving the historical value of the constructions. Experimental analyses and Finite Element Method (FEM) simulations validated the technical feasibility, safety, and sustainability of the proposed system, highlighting its non-invasive nature and ease of assembly and disassembly. The Von Mises stress behavior analysis with beam length and bolt configurations, as depicted in Figure 8, demonstrates a clear linear relationship. The study found that Von Mises stresses increase with beam length, and the bolt placement influences this trend. Internal bolts exhibit a lower stress rate increase than middle and external bolts, thereby providing better performance in maintaining structural integrity as beam length increases. This insight is critical for engineering and optimizing maintenance platforms, guiding the selection of bolt configurations that promote structural integrity and longevity.