铁路架空线结构的新型拉挤复合桅杆设计

Q2 Engineering Designs Pub Date : 2023-06-16 DOI:10.3390/designs7030077

M. Grasso, M. Robinson, Brace Chaffey, P. Mortimer, J. Brighton

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引用次数: 0

摘要

对采用碳纤维增强聚合物(CFRP)拉挤材料进行高架线铁路电气化桅杆轻量化设计的结构可行性进行了研究和仿真。使用三点弯曲和有限元分析进行材料表征，以确定用于架空电气化复合桅杆的拉挤管的正交异性特性。提出了一种创新的桅杆设计，并通过比较风荷载和惯性荷载下的挠度和应力水平的仿真来验证。仿真结果表明，所提出的复合结构设计符合实施的力学性能要求，与现有钢桅杆设计相比，重量减轻80%以上，有利于应用。

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Innovative Pultruded Composite Mast Design for Railway Overhead Line Structures

The structural feasibility of using a pultrusion of carbon-fibre-reinforced polymers (CFRP) for the lightweight design of a mast for overhead line railway electrification was investigated and simulated. Material characterisation was undertaken using three-point bending and finite element analysis to identify the orthotropic properties of the pultruded tubes designed for a composite mast for overhead electrification. An innovative design of the mast was proposed and verified using a simulation that compared the deflection and stress levels under wind and inertial load. From the simulation results, it was concluded that the proposed composite structure design complies with the mechanical performance requirements for its implementation and benefits the application with a weight reduction of more than 80% with respect to the current steel mast design.

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