scholarly journals Experimental Study on Force Bearing of Long Span Wide Steel Box Girder Cable-Stayed Bridge in Construction Stage

2019 ◽  
Vol 490 ◽  
pp. 032006
Author(s):  
Deyuan Deng ◽  
Jianxin Lu ◽  
Zhou Chen ◽  
Xiaoqing Zhang ◽  
Guofei Yang
Keyword(s):  
Experimental Study ◽  
Construction Stage ◽  
Box Girder ◽  
Cable Stayed Bridge ◽  
Long Span ◽  
Steel Box Girder

Experimental study on stability of orthotropic steel box girder of self-anchored suspension cable-stayed bridge

2021 ◽  
Vol 163 ◽  
pp. 107727
Author(s):  
Fei Wang ◽  
Zhong-da Lv ◽  
Min-jie Gu ◽  
Qin-kai Chen ◽  
Zhuo Zhao ◽  
...  
Keyword(s):  
Experimental Study ◽  
Box Girder ◽  
Cable Stayed Bridge ◽  
Steel Box Girder ◽  
Suspension Cable

Theoretical and Experimental Study on Cable-to-Irder Anchorages in Long-Span Cable-Stayed Bridges with Steel Box Girder

2011 ◽  
Vol 255-260 ◽  
pp. 1315-1318 ◽  
Author(s):  
Xing Wei ◽  
Jun Li
Keyword(s):  
Stress Concentration ◽  
Stress Distribution ◽  
Stress Transfer ◽  
Strength Criterion ◽  
Heavy Load ◽  
Box Girder ◽  
Static Test ◽  
Cable Stayed Bridge ◽  
Long Span ◽  
Steel Box Girder

Cable anchorages are among the most important elements in a cable-stayed bridge, which are complex in structure and bear heavy load. There are three main forms in anchorage zone between girder and cable in modern long-span cable-stayed bridge with steel box girder, which are ear-plate form, anchor-box form and anchor-plate form. Combining theoretical analysis with the static test, static behavior and stress transfer pathway of three typical cable-to-girder anchorages were analyzed, and the differences of stress distribution and stress concentration among anchorage zones were pointed out. Based on the Von.Mises strength criterion, bearing safety of three typical cable-to-girder anchorages was evaluated. Finally, the measures to reform stress distribution and reduce stress concentration are discussed. Some useful conclusions were obtained, which would benefit the design of cable-to-girder anchorages.

Construction Technology of Jiu-Jiang Yangtze River Highway Bridge

2014 ◽  
Vol 501-504 ◽  
pp. 1274-1278 ◽  
Author(s):  
Yong Tao Zhang ◽  
Xin Li ◽  
Xin Peng You
Keyword(s):  
Yangtze River ◽  
Control Measures ◽  
Highway Bridge ◽  
Construction Technology ◽  
Box Girder ◽  
Cable Stayed Bridge ◽  
Long Span ◽  
North Side ◽  
Steel Box Girder ◽  
Main Girder

Jiu-Jiang Yangtze River Highway Bridge, with a main span of 818m, is another long span hybrid girder cable-stayed bridge which connects Jiang Xi province and Hu Bei province in China. Steel box girder is adopted in main span and north side span, and main girder of south side span and south tower nearby is designed of concrete box girder. The pylon is concrete structure, with the height of 242.3m and H-shape. There are 216 cables used in this bridge, of which are assembled by parallel strands. Jiu-Jiang Yangtze River Highway Bridge began to construct in 2009, and was closed in December, 2012. The bridge opened to traffic officially in the next year. Design concept, construction method and vibration control measures about Jiu-Jiang Yangtze River Highway Bridge are introduced in this article.

Finite Element Analysis on Incremental Launching Construction for Steel Box Girder

2013 ◽  
Vol 671-674 ◽  
pp. 974-979
Author(s):  
Jie Dai ◽  
Jin Di ◽  
Feng Jiang Qin ◽  
Min Zhao ◽  
Wen Ru Lu
Keyword(s):  
Finite Element ◽  
Bending Moment ◽  
Internal Force ◽  
Element Analysis ◽  
Box Girder ◽  
Finite Element Software ◽  
Cable Stayed Bridge ◽  
Steel Box Girder ◽  
Maximum Value ◽  
Negative Bending

For steel box girder of cable-stayed bridge, which using incremental launching method, during the launching process, structural system and boundary conditions were changing, structure mechanical behaviors were complex. It was necessary to conduct a comprehensive analysis on internal force and deformation of the whole structure during the launching process. Took a cable-stayed bridge with single tower, double cable planes and steel box girder in China as an example; finite element software MIDAS Civil 2010 was used to establish a model for steel box girder, simulation analysis of the entire incremental launching process was carried out. Variation rules and envelopes of the internal force, stress, deformation and support reaction were obtained. The result showed that: the maximum value of positive bending moment after launching complete was 60% of the maximum value of positive bending moment during the launching process. The maximum value of negative bending moment after launching complete was 78% of the maximum value of negative bending moment during the launching process.

Cable Replacement of the Tacitus Cable Stayed Bridge

2018 ◽  
Author(s):  
Matti Kabos ◽  
Edwin Thie ◽  
Conor Lavery
Keyword(s):  
Bridge Deck ◽  
High Strength ◽  
Box Girder ◽  
Highway Infrastructure ◽  
Cable Stayed Bridge ◽  
Stay Cables ◽  
Main Cable ◽  
Steel Box Girder ◽  
Permanent Load ◽  
Steel Deck

As part of a major renovation programme of critical highway infrastructure in the Netherlands, the Tacitus Bridge at Ewijk, a 1055-metre-long orthotropic steel box girder deck of ten spans, with a main cable-stayed span of 270 metres, has undergone extensive strengthening and refurbishment. Due to the presence of micro-fissure defects identified in the existing lock coiled stay cables and an increase in permanent load on the bridge deck resulting from the addition of a high strength concrete overlay acting compositely with the orthotropic steel deck, it was concluded that the existing stay cables needed replacement. This paper presents the analytical approach developed to verify that the existing stay cables could be removed with no additional temporary supports and the use of advanced non-linear techniques to predict and monitor the performance of the bridge during each step of destressing the existing stay cables and of tensioning the new parallel strand cables.

scholarly journals Structural Health Monitoring of the Scaffolding Dismantling Process of a Long-Span Steel Box Girder Viaduct Based on BOTDA Technology

2019 ◽  
Vol 2019 ◽  
pp. 1-7
Author(s):  
Yong Ding ◽  
Feng Xiao ◽  
Weiwei Zhu ◽  
Tao Xia
Keyword(s):  
Health Monitoring ◽  
Strain Distribution ◽  
Time Domain Analysis ◽  
Element Model ◽  
Box Girder ◽  
Bridge Health Monitoring ◽  
Long Span ◽  
Steel Box Girder ◽  
Optical Time ◽  
Distributed Optical Fiber

In this study, a distributed optical fiber sensing technique based on Brillouin optical time-domain analysis (BOTDA) is used to construct a complete bridge health monitoring system by continuously laying distributed sensing fiber lines in a steel box girder. The bridge scaffolding dismantling process is monitored to study the variation of the strain distribution. Additionally, a bridge finite element model is built to simulate the bridge scaffolding removed condition, and the strain distribution of the long-span steel box girder viaduct after scaffolding dismantling is compared with the measured values. This study provides a reference for monitoring the scaffolding dismantling process based on BOTDA technology.

Research on the Fatigue Design Load of Orthotropic Steel Box Girder for Long Span Suspension Bridge

2012 ◽  
Vol 178-181 ◽  
pp. 2365-2368
Author(s):  
Ce Chen ◽  
Bo Hai Ji
Keyword(s):  
Suspension Bridge ◽  
Load Spectrum ◽  
Fatigue Load ◽  
Box Girder ◽  
Traffic Loading ◽  
Long Span ◽  
Vehicle Load ◽  
Steel Box Girder ◽  
Traffic Composition ◽  
Matlab Programming

Traffic composition and the vehicle load were statistically analyzed and a fatigue vehicle load model was established according to the law of equivalent fatigue damage. Based on the MATLAB programming language and the Statistics Toolbox, vehicle fatigue load spectrum was simulated for accurately assessing actual fatigue stress of existing bridge under traffic loading. And the fatigue load could be used in the design for suspension bridge steel box girder.

Sign in / Sign up

Export Citation Format

Share Document