PSI - Issue 81

Volodymyr Romaniuk et al. / Procedia Structural Integrity 81 (2026) 276–281

281

5. Conclusions A comparative analysis of theoretical and experimental research results showed that the deviation of experimental stress values from theoretical ones for different values of tie rod displacement in the vertical direction was 5.9% for the upper flange of the half arch chord and 7.1% for the lower flange. Moreover, the theoretical stresses are greater. In addition, the conducted studies demonstrated that adjusting the height of the tie placement to the optimal value e 0 =115mm, calculated by formula (5), allows reducing the maximum stresses in the upper chord of the arch by 8.7% compared to the tie placement height e 0 =0mm. This provides an additional reserve of bearing capacity, and the optimal value is confirmed by experimental data. References DBN V.2.6-198, 2014. Steel Structures. Design Standards. Ministry of Regional Development of Ukraine, Kyiv. EN 1993-1-8, 2005. Eurocode 3: Design of Steel Structures. Morkhade, S.G., Gupta, L.M., 2015. An experimental and parametric study on steel beams with web openings. International Journal of Advanced Structural Engineering 7, 249 – 260. Pidgurskyi, I., Slobodian, V., Bykiv, D., Pidgurskyi, M., 2021. Investigation of the stress-strain sate of beams with different types of web perforation. Scientific Journal of the Ternopil National Technical University 3, 79-87. Romaniuk, V., Supruniuk, V., Bezniuk, L., Kononchuk, O., Meshcheryakova, O., Sorochak, A., 2024a. Experimental studies of a steel rafter arch with a perforated upper band. Procedia Structural Integrity 59, 479 – 486. Romaniuk, V., Bezniuk, L., Supruniuk, V., Kononchuk, O., Meshcheryakova, O., Sorochak, A., 2024b. Features of the work of continuous perforated beams near intermediate supports. Procedia Structural Integrity 59, 471 – 478. Romaniuk, V.V., Supruniuk, V.V., 2008. Calculation of Steel Rafter Arches with Perforated Upper Belt According to the Deformation Scheme: Recommendations. NUVHP, Rivne. Shardakov, I., Shestakov, A., Son, M., Zemlanuhin, A., Glot, I., 2018a. Beam to column flange connection: from elasticity to destruction (theory and experiment). Procedia Structural Integrity 13, 1324 – 1329. Shardakov, I., Shestakov, A., Glot, I., 2018b. Experimental and Theoretical Study of Deformation Processes in a Flange Connection of Iron Beams. Procedia Structural Integrity 9, 207 – 214. Tsavdaridis, K.D., D'Mello, C., 2011a. Vierendeel Bending Study of Perforated Steel Beams with Various Novel Shapes of Web Openings, through Non-linear Finite Element Analyses. Journal of Structural Engineering 138 (10), 1214 – 1230. Tsavdaridis, K.D., D'Mello, C., 2011b. Web Buckling Study of the Behaviour and Strength of Perforated Steel Beams with Different Novel Web Opening Shapes. Journal of Constructional Steel Research 67 (10), 1605 – 1620. Wang, J., Uy, B., Thai, H.-T., Li, D., 2018. Behaviour and design of demountable beam-to-column composite bolted joints with extended end-plates. Journal of Constructional Steel Research 144, 221 – 235.