Fatigue Evaluation of Flat Steel Box Girders with Closed Stiffeners of Large-Span Suspension Bridges under Different Heavy Trucks

2011 ◽  
Vol 147 ◽  
pp. 157-160 ◽  
Author(s):  
Yong Zeng ◽  
Hong Mei Tan
Keyword(s):  
Finite Element Analysis ◽  
Finite Element ◽  
Cross Section ◽  
Suspension Bridges ◽  
Box Girders ◽  
Element Analysis ◽  
Box Girder ◽  
Fatigue Assessment ◽  
Steel Box Girder ◽  
Flat Steel

Due to its outstanding aerodynamic shape and light weight, the trapezoidal cross-section flat steel box girder with orthotropic decks and thin-walled longitudinal stiffeners of trapezoidal cross section are widely used in long-span suspension bridges in the world. However, because of the geometrical characteristics and the relative flexibility of their components, these structures may be quite susceptible to traffic loadings that fatigue cracks tend to appear in these structures. In this paper, Jiangyin Bridge is used as a case study to investigate the fatigue performance of the steel girders of suspension bridge Jiangyin Bridge is the second longest bridge in China, which has the main span of 1385m. The stress analysis of steel box girders is firstly carried out based on the analysis of fatigue life. Fatigue assessment method is proposed on the basis of in-situ measurement data combined with finite element analysis. A complete fatigue assessment is made in this paper. Key words: flat steel box girder; orthotropic decks; finite element analysis; fatigue assessment

Spatial Finite Element Analysis on Bailey Trussed Girder of a Road

2011 ◽  
Vol 422 ◽  
pp. 693-696
Author(s):  
Yan Weng ◽  
Mei Cen ◽  
Ya Guang Xu
Keyword(s):  
Finite Element Analysis ◽  
Finite Element ◽  
Finite Element Model ◽  
Element Model ◽  
Box Girders ◽  
Element Analysis ◽  
Box Girder ◽  
Construction Scheme ◽  
Box Girder Bridge ◽  
Girder Bridge

A simple box girder bridge with spans 25m is being constructed on the No.2 road of a project of PanZhiHua Steel. A Bailey trussed girder is constructed under the bridge to assist its construction. The paper makes spatial finite element analysis about the Bailey trussed girder. Firstly, the spatial finite element model is built. Then the force, stress and displacement of the girder under six box girders’ self weigh and the construction load are analyzed in detail. Lastly, the construction scheme is optimized. After optimization, all indexes of Bailey trussed girder can meet code requirement.

Finite Element Analysis for the Collapse Accident of a 110kV Transmission Tower

2014 ◽  
Vol 986-987 ◽  
pp. 927-930
Author(s):  
Yi Zhu ◽  
Bo Li ◽  
Hao Wang ◽  
Kun Li
Keyword(s):  
Finite Element Analysis ◽  
Finite Element ◽  
Cross Section ◽  
Strong Wind ◽  
Transmission Tower ◽  
Element Analysis ◽  
Straight Line ◽  
The Finite Element Analysis

Put the finite element analysis of line tower coupling modeling to the collapse of a 110 kV line straight-line tower, study the effect of strong wind on transmission tower and wire. The results show that under the action of strong wind, the material specification selected by the part of the rods on the type of tower is lower, cross section is smaller, the principal material of tower will be instable and flexional under the compression, resulting in tower collapsed.

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.

scholarly journals Investigation of the Prediction Accuracy of a Finite Element Analysis Model for the Coating Thickness in Cross-Wedge Rolled Coaxial Hybrid Parts

Materials ◽  
2019 ◽  
Vol 12 (18) ◽  
pp. 2969 ◽  
Author(s):  
Jagodzinski ◽  
Kruse ◽  
Barroi ◽  
Mildebrath ◽  
Langner ◽  
...  
Keyword(s):  
Finite Element Analysis ◽  
Finite Element ◽  
Cross Section ◽  
Coating Thickness ◽  
Wedge Angle ◽  
Research Centre ◽  
Cross Wedge Rolling ◽  
Element Analysis ◽  
Hybrid Parts ◽  
Experimental Trials

The Collaborative Research Centre 1153 (CRC 1153) “Process chain for the production of hybrid high-performance components through tailored forming” aims to develop new process chains for the production of hybrid bulk components using joined semi-finished workpieces. The subproject B1 investigates the formability of hybrid parts using cross-wedge rolling. This study investigates the reduction of the coating thickness of coaxially arranged semi-finished hybrid parts through cross-wedge rolling. The investigated parts are made of two steels (1.0460 and 1.4718) via laser cladding with hot-wire. The rolling process is designed by finite element (FE)-simulations and later experimentally investigated. Research priorities include investigations of the difference in the coating thickness of the laser cladded 1.4718 before and after cross-wedge rolling depending on the wedge angle β, cross-section reduction ∆A, and the forming speed ν. Also, the simulations and the experimental trials are compared to verify the possibility of predicting the thickness via finite element analysis (FEA). The main finding was the ability to describe the forming behavior of coaxially arranged hybrid parts at a cross-section reduction of 20% using FEA. For a cross-section reduction of 70% the results showed a larger deviation between simulation and experimental trials. The deviations were between 0.8% and 26.2%.

Novel Finite Element Analysis of Curved Concrete Box Girders Using Hybrid Box Elements

2021 ◽  
Vol 147 (1) ◽  
pp. 04020284
Author(s):  
Taiyu Song ◽  
C. S. Walter Yang ◽  
David W. Scott ◽  
Yin Shen ◽  
Guoping Li
Keyword(s):  
Finite Element Analysis ◽  
Finite Element ◽  
Box Girders ◽  
Element Analysis
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