Prediction of welding shrinkage deformation of bridge steel box girder based on wavelet neural network

This paper describes the design of the Murray and Wolverine River rail bridges, two of the largest river crossings on British Columbia's Tumbler Ridge branch line. These unique railway bridges feature a single-cell, continuous steel box girder superstructure supported by pairs of steel delta legs. The top flange of the box girder is an orthotropic deck plate that is a part of the ballast containment trough. Stability of the delta legs is provided by posttensioning of their bases to the concrete substructure. Key words: rail bridge, steel box girder, steel delta legs, orthotropic deck, posttensioning.

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Application of the Non-destructive Methods to the Determination of Discontinuities Between the Bridge Steel Box Girder and Concrete

Lecture Notes in Civil Engineering - Proceedings of the 1st Conference of the European Association on Quality Control of Bridges and Structures ◽

10.1007/978-3-030-91877-4_16 ◽

2021 ◽

pp. 132-139

Author(s):

Dalibor Sekulić ◽

Maria Grozdanić ◽

Karla Ille

Keyword(s):

Box Girder ◽

Steel Box Girder ◽

Bridge Steel ◽

Non Destructive ◽

Destructive Methods

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Crack identification inside on-site steel box girder based on fusion convolutional neural network

Sensors and Smart Structures Technologies for Civil, Mechanical, and Aerospace Systems 2018 ◽

10.1117/12.2298390 ◽

2018 ◽

Author(s):

Yang Xu ◽

Hui Li ◽

Jiahui Chen

Keyword(s):

Neural Network ◽

Convolutional Neural Network ◽

Crack Identification ◽

Box Girder ◽

Steel Box Girder

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Research on Integral Lifting Continuous Steel Box Girder Bridge Construction Technology

Applied Mechanics and Materials ◽

10.4028/www.scientific.net/amm.256-259.1674 ◽

2012 ◽

Vol 256-259 ◽

pp. 1674-1681

Author(s):

Hong Zhang ◽

Yong Tao Zhang ◽

Hao Zhu ◽

Ji Bin Gao

Keyword(s):

Optimization Design ◽

Water Environment ◽

Construction Technology ◽

Element Analysis ◽

Box Girder ◽

Large Segment ◽

Steel Box Girder ◽

Bridge Steel ◽

Girder Bridge ◽

Steel Box Girder Bridge

Due to over length and weight of the girder segment, the main bridge steel box girder of Chongqi Bridge adopts large segment integral lifting erection method; two sets of large floating cranes are needed for hoisting. According to the water environment condition at site, select the lifting equipments to research on; conduct restrict checking on the lifting weight, height and amplitude; new automatic balance type lifting sling structure form is adopted during lifting erection to make sure the stress on each lifting point is balanced; conduct optimization design onto the lifting points; aimed at lifting erection of large segments, use ansys to establish large solid simulation model for finite element analysis so as to guarantee safety of steel box girder structure during lifting erection of large segment.

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