Internal force redistribution algorithm for steel–concrete composite girder bridges using virtual double-layer element

To improve the simulation calculation accuracy of long-span composite girder bridges during construction and ensure high calculation efficiency, this paper presents a novel algorithm for analyzing internal force redistribution in steel–concrete composite girder bridges. Based on section equivalence theory, the expression describing the internal force distribution of the steel girder and the concrete deck is derived, and a new finite element model of a double-layer element, named virtual double-layer element model, is established. Based on the exponential recursive method of concrete beam element shrinkage and creep effects and the influence mechanism of concrete deck shrinkage and creep in steel–concrete composite girders, an analysis model of composite girder shrinkage and creep is established. Calculation expressions of the equivalent node force increment and fixed-end force increment of the composite girder integral element after conversion of a composite section are derived. The feasibility of the method proposed in this paper is verified through analysis of models of a continuous beam and a cable-stayed bridge. The algorithm was applied to calculate the construction process of the world's largest span cable-stayed bridge, achieving alignment with its design objectives.

• Record URL:
  • https://doi.org/10.1016/j.conbuildmat.2024.138485
• Record URL:
  • http://www.sciencedirect.com/science/article/pii/S0950061824036274
• Availability:
  • Find a library where document is available. Order URL: http://worldcat.org/issn/09500618
• Supplemental Notes:
  • © 2024 Elsevier Ltd. All rights are reserved, including those for text and data mining, AI training, and similar technologies. Abstract reprinted with permission of Elsevier.
• Authors:
  • Huang, Gen
  • Yan, Donghuang
  • Chen, Changsong
  • She, Qincong
  • Ling, Lihua
  • Wang, Jing
  • Xu, Qiao
  • Lu, Fengyue
• Publication Date: 2024-10-25

Language

• English

Media Info

• Media Type: Web
• Features: References;
• Pagination: 138485
• Serial:
  • Construction and Building Materials
  • Volume: 449
  • Issue Number: 0
  • Publisher: Elsevier
  • ISSN: 0950-0618
  • Serial URL: http://www.sciencedirect.com/science/journal/09500618?sdc=1

Subject/Index Terms

• TRT Terms: Algorithms; Composite structures; Concrete; Girder bridges; Load transfer; Steel
• Subject Areas: Bridges and other structures; Highways; Materials;

Filing Info

• Accession Number: 01935144
• Record Type: Publication
• Files: TRIS
• Created Date: Oct 25 2024 9:29AM