Widening Methods of Existing Cast-in-Situ Continuous Curved Beams

An existing cast-in-situ continuous curved bridge was located at the acceleration lane of a new Interchange, widening was needed to meet the width requirements. The original lateral bump walls of the bridge were removed, cantilever sections of beam were cut off about 50cm, and medial bump walls were replaced with corrugated guardrails for balance. With the help of the finite element modeling, conditions of limit and normal state with different load combinations were analyzed. The results, numerical simulations of ultimate flexural capacity and stress of both the top and bottom sides under normal state, showed that the widening project was practicable. On the basis of numerical simulations, vertical deformations between existing and new beams under using stage were calculated, and by comparison on advantages and disadvantages of different splicing scheme, Polyurethane elastic expansion joint was finally recommended to treat Joints between new and old beams.

• Record URL:
  https://doi.org/10.1061/9780784479384.300
• Availability:
  • Find a library where document is available. Order URL: http://worldcat.org/isbn/9780784479384
• Supplemental Notes:
  • © 2015 American Society of Civil Engineers.
• Corporate Authors:

  American Society of Civil Engineers

  1801 Alexander Bell Drive
  Reston, VA  United States  20191-4400
• Authors:
  • Mei, Xiaoliang
  • Lin, Shuo
  • Li, Xinwei
• Conference:
  • Fifth International Conference on Transportation Engineering
  • Location: Dalian , China
  • Date: 2015-9-26 to 2015-9-27
• Publication Date: 2015-9

Language

• English

Subject/Index Terms

• TRT Terms: Cast in place concrete; Curved beams; Curved bridges; Finite element method; Flexural strength; Joints; Load limits; Simulation; Splicing; Width
• Uncontrolled Terms: Widening
• Subject Areas: Bridges and other structures; Construction; Highways; I53: Construction of Bridges and Retaining Walls;

Filing Info

• Accession Number: 01579223
• Record Type: Publication
• ISBN: 9780784479384
• Files: TRIS, ASCE
• Created Date: Oct 23 2015 9:35AM