A simple analytical solution for predicting deflection of a hybrid FRP-aluminum modular space truss bridge

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• 作者：Fei Li 李飞 ; Dong-dong Zhang 张冬儿/a> ; Qi-lin Zhao 赵启朿/a>…
• 刊名：Journal of Central South University
• 出版年：2015
• 出版时间：November 2015
• 年：2015
• 卷：22
• 期：11
• 页码：4414-4425
• 全文大小：1,328 KB
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• 作者单位：Fei Li 李飞 (1)
  Dong-dong Zhang 张冬冬 (2)
  Qi-lin Zhao 赵启林 (2)
  An-zhong Deng 邓安仲 (1)
  
  1. Department of Engineering Management, Institute of Logistics Engineering of PLA, Chongqing, 400000, China
  2. College of Field Engineering, PLA University of Science and Technology, Nanjing, 210007, China
  
• 刊物类别：Engineering
• 刊物主题：Engineering, general
  Metallic Materials
  Chinese Library of Science
  
• 出版者：Central South University, co-published with Springer
• ISSN：2227-5223

文摘

A novel hybrid FRP-aluminum space truss was employed in a two-rut modular bridge superstructure, which is composed of standard structural units. The main objective of this work was to obtain a simple analytical solution that can conveniently predict the deflection of the proposed hybrid space truss bridge. The analytical formulae are expected to possess a straightforward format and simple calculation process. A simple description of the proposed bridge was introduced. The design formulae of the deflection were derived based on a simplified analytical plane truss model, which possessed hinge nodes and was subsequently simplified as two solid web beams during the theoretical derivation process. To validate the analytical model and formulae, numerical and experimental works were conducted and compared with the theoretical solutions. The results indicate that the analytical formulae provide higher deflection magnitudes with a difference of <1.5% compared with the experiments performed and <4.5% compared with the FE model used; the simplified plane truss is thus shown to be an effective analytical model for the derivation of deflection design formulae, which can conveniently calculate the deflection of the hybrid space truss bridge with satisfactory accuracy.