scholarly journals EFFECT OF LANE MARK SHIFT ON FATIGUE DAMAGE IN ORTHOTROPIC STEEL DECK IN CONSIDERATION OF CRACK PENETRATING DECK PLATE

2018 ◽  
Vol 74 (1) ◽  
pp. 83-88
Author(s):  
Takeshi MORI ◽  
Sou KANEKO ◽  
Nobuhiko HAYASHI ◽  
Teruo OGASAWARA ◽  
Daisuke UCHIDA
Keyword(s):  
Fatigue Damage ◽  
Orthotropic Steel Deck ◽  
Deck Plate ◽  
Steel Deck

scholarly journals A Numerical Evaluation of Structural Hot-Spot Stress Methods in Rib-To-Deck Joint of Orthotropic Steel Deck

2020 ◽  
Vol 10 (19) ◽  
pp. 6924
Author(s):  
Nouman Iqbal ◽  
Heng Fang ◽  
Ahsan Naseem ◽  
Muhammad Kashif ◽  
Hans De Backer
Keyword(s):  
Hot Spot ◽  
Evaluation Methods ◽  
Single Element ◽  
International Institute ◽  
Hot Spot Stress ◽  
Shell Elements ◽  
Orthotropic Steel Deck ◽  
Deck Plate ◽  
Stress States ◽  
Steel Deck

This study numerically investigates the limitations of structural hot-spot stress (SHSS) methods and proposes a guideline for the calculation of hot-spot stresses, which can be used for the better evaluation of fatigue-related problems. Four different SHSS evaluation methods have been applied to the rib-to-deck (RD) welded joint in orthotropic steel deck (OSD). These methods are used to calculate SHSS at this critical joint utilizing finite element analyses (FEA) based software Siemens NX.12. The limitations and the accuracy of these methods have been observed under different element types and meshing techniques. Moreover, the effect of the nodal-averaging feature is being studied. Two types of governing stresses are produced by the application of Eurocode fatigue load model-4. Essentially, the bending in deck-plate produces highly non-linear stress at the deck-toe, and the membrane effect in rib-plate generates linear stress at the rib-toe. Guidelines are proposed considering different parameters on these two stress states by applying SHSS evaluation methods. In comparison to other SHSS approaches, the International Institute of Welding (IIW) quadratic stress extrapolation (QSE) method shows better results for solid single-element, and the American Society of Mechanical Engineers (ASME) through thickness stress linearization (TTSL) method stands out in solid cubic-mesh technique. In general, shell elements have more consistent SHSS results as compared to solid elements for both stress states.

Proactive maintenance method for fatigue cracks to steel bridge deck without traffic disruption

2019 ◽  
Author(s):  
Ryo Nakata ◽  
Yukio Adachi
Keyword(s):  
Fatigue Damage ◽  
Fatigue Resistance ◽  
Bridge Deck ◽  
Fatigue Cracks ◽  
New Method ◽  
Steel Bridge ◽  
Traffic Demand ◽  
Deck Plate ◽  
Steel Deck ◽  
Proactive Maintenance

<p>Fatigue damage is a major topic in bridge maintenance. The fatigue damage to steel bridge deck has been dramatically increasing since the first fatigue damage was observed in Hanshin expressway in early 2000s. Insufficient knowledge of bridge fatigue design and unexpected increase of traffic demand and heavy vehicle could be the cause of the fatigue damage.</p><p>Replacement of base pavement course to steel fiber reinforced concrete (SFRC) has been generally used for strengthening of steel decks; however, the countermeasure from the topside of the bridge deck could make serious traffic disruption. Therefore, reactive and proactive maintenance for such steel decks has not been well progressed so far.</p><p>According to the background above, Hanshin expressway has been making an effort on developing new method by strengthening steel deck from the bottom side. The idea of the new method is to enhance fatigue resistance by improving the weld joint between deck plate and U-rib plate. Three potential methods were identified and the effectiveness of those methods was studied in field for making sure of not only fatigue resistance improvement but also field construction.</p><p>This paper will introduce the new retrofit methods for steel deck and describe the effectiveness of those methods.</p>

Repairing fatigue damage on an orthotropic steel deck road bridge

2017 ◽  
Vol 170 (3) ◽  
pp. 143-151 ◽  
Author(s):  
Josef Steiner ◽  
Robert Laier ◽  
Till Würfel ◽  
Mathias Scherer
Keyword(s):  
Fatigue Damage ◽  
Orthotropic Steel Deck ◽  
Steel Deck

scholarly journals In Situ Experimental Study on the Behavior of UHPC Composite Orthotropic Steel Bridge Deck

Materials ◽  
2020 ◽  
Vol 13 (1) ◽  
pp. 253 ◽  
Author(s):  
Li Su ◽  
Shilei Wang ◽  
Yan Gao ◽  
Jianlei Liu ◽  
Xudong Shao
Keyword(s):  
High Performance ◽  
High Performance Concrete ◽  
Fatigue Cracks ◽  
Steel Bridge ◽  
Orthotropic Steel Deck ◽  
Deck Plate ◽  
In Situ Experiments ◽  
Before And After ◽  
Steel Deck

A novel ultra high performance concrete (UHPC) layer composite orthotropic steel deck was adopted in the construction of a new bridge in China to improve the fatigue performance of the orthotropic steel deck plate and reduce the disease of surface wearing layer. In situ experiments were conducted to study the UHPC layer’s impact on the behavior of the orthotropic steel deck. The test vehicle loads were applied on the deck plate before and after UHPC layer paving, the stresses where fatigue cracks usually occur and the deflections of critical sections were measured. The test results verified that the UHPC composite steel deck system could significantly reduce the stress of the rib-to-deck connection region and the stress at the bottom toe of rib-to-diaphragm weld. In addition, it slightly influenced the performance of U shape rib, girder web-to-deck and diaphragm cutout.

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