Open Journal Systems

Research on Manufacturing and Construction Technology of 50m Steel Box Girder

LUO Kang yong

Article ID: 2573
Vol 2, Issue 1, 2022

DOI: https://doi.org/10.54517/vfc.v2i1.2573
VIEWS - 1139 (Abstract)

Download PDF

Abstract

In the construction of 50m steel box girder of Chengdu Tianfu Airport Expressway, in order to overcome the difficulty of making long steel box girder, China Tieshan Bridge first manufactured the plate unit in the Chengdu base factory, and then assembled the beam section, and transported the large piece for 28km. The steel beam in this project is an I-shaped structure, and each beam section is composed of a bottom plate, a web plate, a top plate, a horizontal connection and a cantilever arm. In the manufacture of beam sections, the actual assembly of each bridge steel plate girder is that each section is pre-assembled on the same tire mold frame, and the assembly iscarried out in sequence from the middle to the two sides, and the size error is controlled by the form of temporary matching between the blocks. And the overall linearity, to ensure the quality.

Keywords

Plate unit manufacturing; Penetration weld; Pre-assembled tire formwork; Beam section assembly.

References

1. Technical Specification for Construction of Highway Bridges and culverts, JTG/T F50-2011, sponsored by: Science and Technology Department of the Ministry of Transport, Developed by: Research Institute of Science and Technology of the Ministry of Transport, officially implemented on August 1, 2011.

2. Manufacturing Code for Railway Steel Bridges, Q/CR9211-2015, China Railway Corporation enterprise standard "Q/CR9211-2015 Manufacturing Code for Railway Steel Bridges" This standard has been implemented since 2015-06-01.

3. Code for Construction of Steel Structures, GB 50755-2012, jointly issued by the Ministry of Housing and Urban-Rural Development of the People's Republic of China and the General Administration of Quality Supervision, Inspection and Quarantine of the People's Republic of China, implemented on August 1, 2012.

4. Code for Acceptance of Construction Quality of Steel Structure Engineering, GB 50205-2001, Ministry of Construction of the People's Republic of China, effective on March 1, 2002.

5. Low alloy high strength Structural steel, GB/T 1591-2008, issued by the General Administration of Quality Supervision, Inspection and Quarantine of the People's Republic of China and the Standardization Administration of China, implemented on October 1, 2009.

6. Structural Steel for Bridges, GB/T 714-2015, issued by the General Administration of Quality Supervision, Inspection and Quarantine of the People's Republic of China and the Standardization Administration of China, implemented on June 1, 2016.

7. GB/T 700-2006, carbon structural steel [S].

8. GB/T 709-2006, Dimensions, shape, weight and allowable deviations of hot rolled steel plates and strips [S].

9. GB/T 5117-2012, non-alloy steel and fine-grain steel electrode [S].

10. GB/T 14957-1994, steel wire for fusion welding [S].

11. GB/T 8110-2008, carbon steel, low alloy steel welding wire for gas shielded arc welding [S].