Abstract
Composite truss has the characteristics of light weight, high strength and full play of the axial mechanical properties of the composite components, which can be applied to form long-span bridges, roof structures et al. A novel 54m space truss string bridge made of pultruded GFRP profiles is proposed in this paper based on the composite pre-tightened tooth connection. The proposed space truss string bridge was fabricated, assembled and tested statically, and the load-displacement responses were recorded. The response of the bridge evidenced a sound carrying capacity, the deformation and stiffness of the space truss string bridge meet the requirements and can be used for bridge repair in emergency situations.
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