222 S. Gómez et al. 26.5 Conclusions A Human-Structure Interaction Footbridge Testbed, a Benchmark Problem and a Blind Prediction Contest were proposed to integrate the research community around common purposes regarding the improvement of the understanding of the HIS, comparing analytic and numerical models and sharing experimental information. Six modes shapes and the corresponding vibration frequencies and damping ratios of the testbed were identified using controlled and ambient vibration tests. Two thousand tests were performed by 100 pedestrians walking on the bridge at different gait frequencies. Acceleration and support reactions records were taken during each test. One video camera placed at the middle of the bridge was used to calculate the pedestrians’ step length and correlate it with the foot length. The gait speed perception survey indicated that normal range frequencies of walking is between 1.8 and 2.1 Hz. The peak accelerations and peak support reactions normalized to pedestrian weight from uncontrolled gait frequency tests were correlated with the corresponding gait frequencies. A HSI model was developed and used for participating in the BPC, obtaining a score 62.02/100 for the type 1 BPC. References 1. Sánchez, J.A., Gómez, D., Thomson, P.: Análisis de la interacción humano-estructura en puentes peatonales de santiago de Cali. Dyna. 86–94, 178 (2014) 2. Živanovic´, S., Pavic´, A., Reynolds, P.: Vibration serviceability of footbridges under human-induced excitation: a literature review. J. Sound Vib. 279, 1–74 (2005) 3. SETRA: Assessment of vibrational behaviour of footbridges under pedestrian loading, Republique Francaise, 2006 4. Brownjohn, J.M.W., Moyo, P.: Long span steel pedestrian bridge at Singapore Changi Airport—part 1: prediction of vibration serviceability problems. Struct. Eng. 82, 21–27 (2004) 5. Bonelli, A., Bonora, M., Bursi, O., Santini, S., Vulcan, L., Zasso, A.: Dynamic analysis and vibration control of the twin deck curved suspension foot/cycle bridge “Ponte del Mare”. In: Proceedings Footbridge 2008 Conference, Porto, 2004 6. Caetano, E., Cunha, Á., Magalhães, F., Moutinho, C.: Studies for controlling human-induced vibration of the Pedro e Inês footbridge, Portugal. Part 1: assessment of dynamic behaviour. Eng. Struct. 32(4), 1069–1081 (2010) 7. Ross, J.N.: Human Induced Vibration on Footbridges, Brisbane, 2009 8. London Millennium Footbridge (online) (2000). Available http://www.fosterandpartners.com/media/Projects/0953/img5.jpg 9. Passerelle solférino (online) (2010). Available https://chasetaylorinc.files.wordpress.com/2010/04/p1060666.jpg?w=480&h=270 10. Ponte del mare, Italy, Pescara (online) (2010). Available https://commons.wikimedia.org/wiki/File:Ponte_del_mare,_Italy,_Pescara.jpg 11. Pedro and Inês Bridge, Coimbra (online) (2006). Available https://structurae.net/photos/75988-pedro-and-ines-bridge-coimbra 12. Goodwill Bridge (online) (2015). Available https://briscycle.com/assets/Uploads/_resampled/resizedimage900335-goodwill-bridge.jpg 13. Živanovic´, S., Pavic´, A., Ingólfsson, E.T.: Modelling spatially unrestricted pedestrian traffic on footbridges. ASCE J. Struct. Eng. 136(10), 1296–1308 (2010) 14. Racic, V., Pavic, A., Brownjohn, J.: Experimental identificacion and analytical modelling of human walking forces: literature review. J. Sound Vib. 326, 1–49 (2009) 15. Shahabpoor, E., Pavic, A., Racic, V.: Using MSD model to simulate human-structure interaction during walking. In: 31st IMAC, A Conference on Structural Dynamics, 2013 16. Živanovic´, S.: Benchmark footbridge for vibration serviceability assessment under vertical component of pedestrian load. ASCE J. Struct. Eng. 138(10), 1193–1202 (2012) 17. Matsumoto, Y., Sato, S., Nishioka, T., Shiojiri, H.: A study on design of pedestrian over-bridges. Trans. JSCE. 4, 50–51 (1972) 18. Matsumoto, Y., Nishioka, T., Shiojiri, H., Matsuzaki, K.: Dynamic design of footbridges. IABSE Proc. 1–15 (1978) 19. Newland, D.E.: Pedestrian excitation of bridges. Proc. Inst. Mech. Eng., Part C. 218, 477–492 (2004) 20. Whittington, B.R., Thelen, D.Y.G.: A simple mass-spring model with roller feet can induce the ground reactions observed in human walking. J. Biomech. Eng. 131, 011013 (2009)
RkJQdWJsaXNoZXIy MTMzNzEzMQ==