scholarly journals NUMERICAL ANALYSIS OF A COMPOSITE STEEL BOX GIRDER BRIDGE IN FIRE

2016 ◽  
Author(s):  
Nicole Leo Braxtan ◽  
Qian Wang ◽  
Reeves Whitney ◽  
Gregory Koch
Keyword(s):  
Cross Sections ◽  
Failure Modes ◽  
Weathering Steel ◽  
Box Girder Bridges ◽  
Box Girder ◽  
Girder Bridges ◽  
Steel Box Girder ◽  
Wide Range ◽  
Steel Box Girder Bridge ◽  
The Individual

Box girder bridges are becoming more common because of their ease of construction, pleasing appearance, and serviceability. Projects with curved configuration and long spans can especially benefit from these advantages. However, the industry lacks a wide range of research on multi-span steel box girder cross-sections and their response to fire events. This poses a major risk to unprotected steel bridges using a box girder design. This paper will discuss a mathematical approach to determining and classifying different failure modes of weathering steel box girder bridges subject to two fire cases. Due to the rapid increase of temperature in the thin steel members, the strength of the steel deteriorates quickly. Results show that different fire locations can greatly affect the forces that act on the individual members of the structure.

Externally Prestressed Steel Box Girder Bridge

2012 ◽  
Vol 178-181 ◽  
pp. 2209-2212
Author(s):  
Jing Nan Yang ◽  
Xiong Jun He ◽  
Xiao Cheng Yang
Keyword(s):  
Practical Case ◽  
Small Cross Section ◽  
Box Girder Bridges ◽  
Box Girder ◽  
Girder Bridges ◽  
Bridge Span ◽  
External Prestressing ◽  
Steel Box Girder ◽  
Girder Bridge ◽  
Steel Box Girder Bridge

With a small cross section, a light deadweight and a convenient replaceable tendon, externally prestressed bridges have many special traits compared with other bridges. With a practical case, this paper analyzes the design of externally prestressed steel box girder bridges, which contains the bridge span, beam construction, externally prestressed layout, substructure and construction programs. Through economic, social analysis, discusses the prospects for the application of external prestressing structure .

Simplified Analysis of Longitudinal Stiffened Plates in a Continuous Steel Box Girder Bridge

2012 ◽  
Vol 178-181 ◽  
pp. 2526-2529
Author(s):  
Hui Zhang ◽  
Zhuo Ya Yuan ◽  
Shi Zhong Liu ◽  
Zi Jiang Yang ◽  
Xiong Wei Shi
Keyword(s):  
Large Scale ◽  
Discrete Models ◽  
Box Girder Bridges ◽  
Box Girder ◽  
Girder Bridges ◽  
Numerical Studies ◽  
Steel Box Girder ◽  
Large Width ◽  
Girder Bridge ◽  
Steel Box Girder Bridge

This paper investigates the thin-walled box girder bridges with large width-to-span ratios through both experimental and numerical studies. For the complexity of the bridge, different discrete models are presented in the analyzing of the longitudinal stiffened plate. In addition, a large-scale Plexiglas model is tested under different loading cases. The simplified simulation of the computation results compared well with the experimental results. It is illustrated that it is an effective method to predict properties of this kind of bridges.

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