[en] This article explores the design and optimization of a bamboo pedestrian bridge as an ecological solution for tropical regions, measuring 18.60 m long and 3.10 m wide, featuring bamboo trusses and a deck made of Eucalyptus grandis wood. The study focuses on Dendrocalamus asper (Da) and Dendrocalamus giganteus (Dg), two bamboo species with exceptional mechanical properties. Their longitudinal modulus of elasticity, averaging 20,000 MPa, is nearly double that of glued laminated timber (11,600 MPa for GL24h). The structural lightness of bamboo is also noteworthy, with values of 0.00042 [1/m] for Da and 0.00051 [1/m] for Dg, making them three times lighter than concrete. This reduces loads on supporting elements and foundations, offering material savings and lower construction costs while maintaining structural integrity. A key aspect of this study is the direct comparison of the mechanical properties and structural behavior of both bamboo species. The curved configuration of the lower truss members ensures that two-thirds of these elements are compressed, utilizing bamboo's high compressive strength, comparable to 28-day-old high-strength concrete. The remaining one-third experiences tensile stress, benefiting from bamboo's superior tensile resistance, where concrete falls short. Finally, the global deflection is 8.80 mm for Da and 8.60 mm for Dg, both well below allowable limits, confirming the design's structural efficiency and viability. This research highlights bamboo as a sustainable, ecological, and cost-effective alternative for transport infrastructure.
Precision for document type :
Critical notes/Edition
Disciplines :
Architecture
Author, co-author :
Rivel, Sinta; Higher Polytechnic School, University of Antsiranana, Madagascar ; Higher Institute of Technology of Antsiranana, Madagascar ; Thematic Doctoral School “Renewable Energies and Environnement”, University of Antsiranana, Madagascar
Nematchoua, Modeste Kameni; Higher Polytechnic School, University of Antsiranana, Madagascar
Arnole, Rasolomampionona Zarasoa; Higher Polytechnic School, University of Antsiranana, Madagascar
Chrysostôme, Raminosoa; Higher Polytechnic School, University of Antsiranana, Madagascar
Richard, Rafefimanana Sambilason; Higher Polytechnic School, University of Antsiranana, Madagascar
Harijaona, Rafidison Barisoa; Higher Polytechnic School, University of Antsiranana, Madagascar
Sela, Jao Barahimo; Higher Polytechnic School, University of Antsiranana, Madagascar
Kameni Nematchoua, Modeste ; Université de Liège - ULiège > Département ArGEnCo > Urbanisme et aménagement du territoire ; Université de Liège - ULiège > Urban and Environmental Engineering
Language :
English
Title :
Bamboo pedestrian bridge: An ecological alternative for the tropical country regions
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