Abstract
Heavy mechanized bridge is utilized to be rapidly deployed as a temporary bridge to facilitate the movement of vehicles and personnel across obstacles. This paper presents a dynamic model of the TMM-3M heavy mechanized bridge during the span-lowering process, including considerations of cable deformation, rear outriggers, elasticity of tire, and front suspension system. Based on the dynamic model, the authors establish a system of differential equations describing the oscillation of the system using Lagrangian equations of the second kind. The article provides a fundamental basis for studying the entire process of deploying the TMM-3M bridge and aims to improve the rear outriggers and cable winding system to reduce bridge deployment time.
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