Finite Element Analysis on Mechanical Behavior of Orthotropic Steel Bridge Deck in Balinghe Bridge

2013 ◽  
Vol 639-640 ◽  
pp. 239-242
Author(s):  
Jian Hua Cheng ◽  
Jian Min Xiong ◽  
Jin Zhi Zhou
Keyword(s):  
Mechanical Behavior ◽  
Bridge Deck ◽  
Fatigue Cracks ◽  
Steel Bridge ◽  
Bridge Structure ◽  
Future Health ◽  
Wheel Load ◽  
Element Analysis ◽  
Box Girder ◽  
Orthotropic Steel Bridge Deck

Orthotropic plate participates in bridge structure as a part of steel box girder, while in Balinghe Bridge it is used as bridge deck directly to endure the wheel load [1]. In this paper it’s studied systematically the mechanical behavior of orthotropic steel bridge deck in combination with the deck model of Balinghe Bridge, and shows the positions emerging fatigue cracks to provide the basis for future health monitoring and put forward some suggestions.

Analysis on Crack Types and Causes of Junshan Bridge’s Steel Box Girder Orthotropic Plate

2013 ◽  
Vol 668 ◽  
pp. 621-624
Author(s):  
Jian Hua Cheng ◽  
Jian Min Xiong ◽  
Jie Dai
Keyword(s):  
Orthotropic Plate ◽  
Fatigue Cracks ◽  
Fatigue Cracking ◽  
Scientific Basis ◽  
Steel Bridge ◽  
Future Health ◽  
Box Girder ◽  
Detail Design ◽  
Design And Manufacturing ◽  
Long Operation

The fatigue cracking of orthotropic plate is a fatal problem for the long operation of steel bridge safely. There are numerous fatigue cracks appearing on Junshan Bridge, which locate mainly on diaphragm, U-Rib and fillet weld between the U-Rib and deck. Based on the location of fatigue cracks, the paper analyzed the causes of fatigue cracking from three aspects of mechanics cause, detail design and manufacturing factors, providing scientific basis of future health monitoring for bridges.

Research of Stress Concentration and Retrofitted Methods for Orthotropic Steel Bridge Decks

2010 ◽  
Vol 163-167 ◽  
pp. 3511-3516 ◽  
Author(s):  
Yan Ling Zhang ◽  
Yun Gang Zhang ◽  
Yun Sheng Li
Keyword(s):  
Stress Concentration ◽  
Stress Distribution ◽  
High Performance ◽  
Bridge Deck ◽  
High Performance Concrete ◽  
Steel Bridge ◽  
Wheel Load ◽  
Orthotropic Steel Deck ◽  
Orthotropic Steel Bridge Deck ◽  
Steel Deck

In this paper, the stress distribution of the orthotropic steel bridge deck in a suspend bridge under local wheel load is analyzed. Some retrofitted methods are introduced, two of which are studied. One is using the concrete paving layer (CPL), and the other is using the sandwich plate system (SPS) to strengthen the orthotropic steel bridge deck. Local finite element models are established by ANSYS; stress distribution of bridge deck is calculated under the designed vehicle load before and after the deck retrofitted by the CPL or the SPS, and the results are compared with each other. The analysis results indicate that, under wheel pressure load, the orthotropic steel deck appears stress concentration; after the deck was retrofitted no matter by the CPL or the SPS, all the stress peaks decrease obviously, and the fatigue resistance of the orthotropic steel deck increases, which indicate that the two methods are effective to retrofit the orthotropic steel bridge deck. Using the CPL method can lead to lower stress concentration than that of using the SPS method, but the concrete paving layer is easy to crack, so, high performance concrete with high tension strength is needed.

scholarly journals Mechanical behavior of the asphalt wearing surface on an orthotropic steel bridge deck under cyclic loading

2022 ◽  
Vol 16 ◽  
pp. e00836
Author(s):  
Viet Hai Hoang ◽  
Quang Tuan Nguyen ◽  
Anh Tuan Tran ◽  
Thi Cam Ha Tran ◽  
Tu Anh Do
Keyword(s):  
Cyclic Loading ◽  
Mechanical Behavior ◽  
Bridge Deck ◽  
Steel Bridge ◽  
Orthotropic Steel Bridge Deck

A Retrofitted Case Study of Orthotropic Steel Bridge Decks Strengthened with Sandwich Plate System

2011 ◽  
Vol 255-260 ◽  
pp. 866-870
Author(s):  
De Ying Zhang ◽  
Yun Sheng Li ◽  
Chun Lei Cui
Keyword(s):  
Elastic Modulus ◽  
Bridge Deck ◽  
Sandwich Plate ◽  
Element Model ◽  
Welding Residual Stress ◽  
Strengthening Effect ◽  
Steel Bridge ◽  
Wheel Load ◽  
Orthotropic Steel Bridge Deck ◽  
Plate System

Some retrofitted methods are introduced, and in these retrofitted methods, a strengthening case of using the sandwich plate system (SPS) to strengthen the orthotropic steel bridge deck of a suspend bridge was studied. A local finite element model is established by ANSYS based on an orthotropic steel bridge deck sample, stress distribution of deck due to the wheel load of the vehicle defined in China current code were analyzed under different loading conditions, and the strengthening effect with SPS was evaluated. The influence of the thickness and elastic modulus of elastic sandwich on the transverse stress of deck was analyzed. The results show that, compared with the orthotropic steel bridge deck before strengthened, the stress peak is decreased obviously without new welding residual stress be generated, and the fatigue resistant of bridge deck is increased apparently after the deck strengthened by SPS. The variation of the thickness and elastic modulus of the elastic sandwich have little influence on the stress behaviours of the orthotropic steel bridge deck.

scholarly journals Research on Fatigue Strength for Weld Structure Details of Deck with U-rib and Diaphragm in Orthotropic Steel Bridge Deck

Metals ◽  
2019 ◽  
Vol 9 (5) ◽  
pp. 484 ◽  
Author(s):  
Yixin Chen ◽  
Pengmin Lv ◽  
Datao Li
Keyword(s):  
Fatigue Strength ◽  
Bridge Deck ◽  
Stress Amplitude ◽  
Steel Bridge ◽  
Box Girder ◽  
Vehicle Load ◽  
Steel Box Girder ◽  
Deck Plate ◽  
Weld Structure ◽  
Orthotropic Steel Bridge Deck

The orthotropic steel bridge deck weld structure would easily cause fatigue cracking under the repeated action of vehicle load. This paper took the steel box girder in a bridge as a research object, researched the mechanical properties of the steel plate and the microstructure of the welded joint, then designed the fatigue specimens of the deck plate and did the fatigue test. The Δσ-N curves and stress amplitudes of the weld details of the deck plate with U-rib and diaphragm under different probabilities of survival were obtained. After extended the Δσ-N curves to the long life range, the fatigue damage calculation equation of the detail was proposed, and the cut-off limit under the 50% and 97.7% probability of survival were 81.50 MPa and 53.11 MPa, respectively. Based on the actual vehicle load spectrum and simplified finite element model of the steel box girder section, the stress amplitude of the details of the weld joint was calculated. The calculation result shows that the maximum stress amplitude of the concerned point was 38.29 MPa, less than the cut-off limit. It means that the fatigue strength of the details of the weld joint meet the requirement of the fatigue design.

Fatigue Life Estimation of Rib-to-Deck Joints in Orthotropic Steel Decks

2010 ◽  
Vol 163-167 ◽  
pp. 410-416 ◽  
Author(s):  
Yan Ling Zhang ◽  
Yun Sheng Li ◽  
De Ying Zhang
Keyword(s):  
Fatigue Life ◽  
Fracture Mechanics ◽  
Bridge Deck ◽  
Steel Bridge ◽  
Stress Range ◽  
Wheel Load ◽  
Linear Elastic ◽  
Elastic Fracture ◽  
Orthotropic Steel Bridge Deck ◽  
Orthotropic Steel Decks

A typical rib-to-deck joint in orthotropic steel bridge deck in a suspension bridge is analyzed in this paper. A local finite element model of bridge deck is established by ANSYS, the vehicle load defined in current code is selected as live load, the stress distribution of the deck bottom in the rib-to-deck joint is analyzed. Let the wheel load move along the longitudinal direction of the deck, the maximum stress range at rib-to-deck joint is obtained under three loading conditions in transverse direction, which are riding-rib wall loading, over-rib loading, and in-between-ribs loading respectively. Using the principles of linear elastic fracture mechanics, the fatigue life of rib-to-deck joint in orthotropic steel decks is evaluated. The analysis results indicate that, the higher stress range under overweight wheel load is the basic reason which will induce fatigue crack at rib-to-deck joint. The Paris formula which is based on the linear elastic fracture mechanics can be used to estimate the residual life of weld joints in orthotropic steel bridge deck.

Study on Influences of Thickness of Flange of U Rib on Mechanical Behaviors of Orthotropic Monolithic Steel Bridge Deck System

2010 ◽  
Vol 163-167 ◽  
pp. 122-126 ◽  
Author(s):  
Ru Deng Luo ◽  
Mei Xin Ye ◽  
Ye Zhi Zhang
Keyword(s):  
Finite Element Analysis ◽  
Yangtze River ◽  
High Speed ◽  
Bridge Deck ◽  
Steel Bridges ◽  
Engineering Practice ◽  
Steel Bridge ◽  
Mechanical Behaviors ◽  
Element Analysis ◽  
High Speed Railway

Orthotropic monolithic steel bridge deck system stiffened by U rib is very fit for high-speed railway steel bridges because of its excellent mechanical behaviors. Thickness of flange is a very important parameter of U rib and has influence on mechanical behaviors of orthotropic monolithic steel bridge deck system. Based on the engineering practice of Anqing Yangtze River Railway Grand Bridge, the kind and the extents of influences of thickness of flange of U rib on mechanical behaviors of orthotropic monolithic steel bridge deck system are studied with finite element analysis. The results show that thickness of flange of U rib has relative large positive influences on rigidity, strength and stability of orthotropic monolithic steel bridge deck system. 14~18mm is the appropriate range of thickness of flange of U rib for high-speed railway steel bridges.

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