In the heart of Málaga, Spain, a unique wooden pedestrian bridge has not only become a vital part of the city’s infrastructure but also a subject of fascinating scientific study. The 270-meter-long bridge, part of the Senda Litoral de Málaga, has been the focus of research led by Álvaro Magdaleno González from the Institute of Transport and Territory (ITAP) at the University of Valladolid. The study, published in the journal ‘Informes de la Construccion’ (Construction Reports), delves into the dynamic response of the bridge to pedestrian traffic, offering insights that could shape the future of wooden structures in urban environments.
The bridge, designed by Media Madera Ingenieros Consultores S.L., is a marvel of modern engineering. Constructed from 215 tons of glulam conifer wood and nearly 15 tons of stainless steel, it was specifically adapted to withstand the challenging marine environment. “The materials and design were chosen to ensure durability and safety, but we also wanted to understand how the bridge would behave under real-world conditions,” explains Magdaleno González.
To this end, dynamic tests were conducted after the bridge was put into service in 2020. The results were promising. The researchers identified five modes of flexion and torsion below 3.7 Hz, all with damping ratios superior to 1.5%. These findings are crucial for understanding the bridge’s behavior under various loads, particularly pedestrian traffic.
One of the most significant discoveries was the bridge’s response to resonant pedestrian crossings. The tests revealed peak accelerations of up to 1.0 m/s², with maximum effective values below 0.60 m/s². These figures are well within safety limits, confirming the bridge’s suitability for its intended use.
The implications of this research extend beyond the immediate context of the Málaga bridge. As cities around the world seek sustainable and durable materials for infrastructure projects, wood is gaining traction as a viable option. The study’s findings could pave the way for more wooden structures in urban settings, offering a greener alternative to traditional materials like concrete and steel.
Moreover, the research highlights the importance of dynamic analysis in ensuring the safety and functionality of modern structures. By understanding how bridges and other infrastructures respond to real-world conditions, engineers can design safer, more efficient, and more sustainable solutions.
As Magdaleno González puts it, “This study is not just about one bridge; it’s about advancing our understanding of wooden structures and their potential in urban environments. It’s a step towards a more sustainable future.”
In the ever-evolving landscape of construction and infrastructure, this research serves as a beacon, guiding the way towards innovative, sustainable, and safe solutions. As cities grow and evolve, the lessons learned from the Málaga bridge could prove invaluable, shaping the skylines of tomorrow.