Numerical Simulation of Fatigue Performance of Diaphragm of Large-Span Bridge Orthotropic Deck

Under traffic loads, orthotropic steel bridge slabs suffer from an obvious fatigue problem. In particular, fatigue cracking of diaphragms seriously affects application and development of orthotropic bridge slabs. In the paper, based on cracking status quo of an orthotropic deck diaphragm of a large-span bridge, experimental tests were formulated to test stress distribution states of the diaphragm. The finite element software ABAQUS was used to establish a finite element model of the orthotropic deck diaphragm; numerical simulation was conducted on the basis of the experiments. Simulation results were compared with experimental results, so correctness of the finite element model was verified. Finally, Local Strain Approach (LSA) and Theory of Critical Distance (TCD) were used to conduct life assessment of the orthotropic deck diaphragms, and applicability of two methods was discussed. In this way, a fatigue life assessment method with high accuracy and good operability was provided for fatigue life assessment of orthotropic deck diaphragms.

[1]  Kai Cui,et al.  Virtual reality research of the dynamic characteristics of soft soil under metro vibration loads based on BP neural networks , 2018, Neural Computing and Applications.

[2]  Bin Cheng,et al.  Experimental study on fatigue failure of rib-to-deck welded connections in orthotropic steel bridge decks , 2017 .

[3]  Kai Cui,et al.  Experimental research and finite element analysis on the dynamic characteristics of concrete steel bridges with multi-cracks , 2017 .

[4]  Ming Yuan,et al.  Probabilistic Modeling of Fatigue Damage in Orthotropic Steel Bridge Decks under Stochastic Traffic Loadings , 2017 .

[5]  Fei Yan,et al.  Numerical simulation of fatigue behavior for cable-stayed orthotropic steel deck bridges using mixed-dimensional coupling method , 2017 .

[6]  Tingting Zhao,et al.  Unsaturated dynamic constitutive model under cyclic loading , 2017, Cluster Computing.

[7]  Hui Li,et al.  Cluster Analysis of Winds and Wind-induced Vibrations on a Long-span Bridge based on Long-term Field Monitoring Data , 2017 .

[8]  Guang-Dong Zhou,et al.  A generalized Pareto distribution–based extreme value model of thermal gradients in a long-span bridge combining parameter updating , 2017 .

[9]  L. Barsi,et al.  Numerical Investigation Of Fluid-structure Interaction For Long-span Bridge Decks , 2016 .

[10]  Jian Wang,et al.  Analysis of the dynamic response of a long span bridge using GPS/accelerometer/anemometer under typhoon loading , 2016 .

[11]  C. Uang,et al.  Stress Analyses and Parametric Study on Full-Scale Fatigue Tests of Rib-to-Deck Welded Joints in Steel Orthotropic Decks , 2012 .

[12]  Shota Urushadze,et al.  Modelling and fatigue life assessment of orthotropic bridge deck details using FEM , 2012 .

[13]  Y. Xiong,et al.  The effect of microstructures on fatigue crack growth in Q345 steel welded joint , 2012 .

[14]  Merit Enckell,et al.  Evaluation of a large-scale bridge strain, temperature and crack monitoring with distributed fibre optic sensors , 2011 .

[15]  Charles Sikorsky,et al.  Effects of Fabrication Procedures on Fatigue Resistance of Welded Joints in Steel Orthotropic Decks , 2009 .

[16]  Xiao Ling Zhao,et al.  Stress analyses and fatigue evaluation of rib-to-deck joints in steel orthotropic decks , 2008 .

[17]  John W. Fisher,et al.  Consistent Approach to Calculating Stresses for Fatigue Design of Welded Rib-to-Web Connections in Steel Orthotropic Bridge Decks , 2006 .

[18]  Zhi-Gang Xiao,et al.  Fatigue cracks in longitudinal ribs of steel orthotropic deck , 2006 .

[19]  Y. Edward Zhou,et al.  Assessment of Bridge Remaining Fatigue Life through Field Strain Measurement , 2005 .

[20]  John W. Fisher,et al.  Full-Scale Fatigue Tests of Steel Orthotropic Decks for the Williamsburg Bridge , 2003 .

[21]  Ai-Min Yang,et al.  Optimum surface roughness prediction for titanium alloy by adopting response surface methodology , 2017 .

[22]  Zong Lian.  Experimental study on fatigue crack behavior of Q345qD bridge steel butt welds , 2015 .

[23]  Koichi Yokozeki,et al.  Fatigue evaluation for longitudinal-to-transverse rib connection of orthotropic steel deck by using structural hot spot stress , 2015, Welding in the World.

[24]  Ronaldo C. Battista,et al.  Fatigue life estimates for a slender orthotropic steel deck , 2008 .

[25]  John W. Fisher,et al.  Full-scale fatigue tests of steel orthotropic deck panel for the Bronx – Whitestone Bridge rehabilitation , 2005 .