Auto‐adaptive multiblock cycle jump algorithm for fatigue damage simulation of long‐span steel bridges

2018 ◽  
Author(s):  
Bin Sun ◽  
You‐Lin Xu ◽  
Qing Zhu ◽  
Zhaoxia Li
Keyword(s):  
Fatigue Damage ◽  
Steel Bridges ◽  
Long Span ◽  
Jump Algorithm ◽  
Damage Simulation

Multi-scale fatigue damage prognosis for long-span steel bridges under vehicle loading

2019 ◽  
Vol 15 (4) ◽  
pp. 524-538 ◽  
Author(s):  
Bin Sun ◽  
You-Lin Xu ◽  
Feng-Yang Wang ◽  
Zhaoxia Li ◽  
Qing Zhu
Keyword(s):  
Fatigue Damage ◽  
Steel Bridges ◽  
Damage Prognosis ◽  
Multi Scale ◽  
Long Span ◽  
Vehicle Loading

Concurrent multi-scale fatigue damage evolution simulation method for long-span steel bridges

2017 ◽  
Vol 28 (2) ◽  
pp. 165-182 ◽  
Author(s):  
Bin Sun ◽  
You-Lin Xu ◽  
Qing Zhu ◽  
Zhaoxia Li
Keyword(s):  
Fatigue Damage ◽  
Damage Evolution ◽  
Large Scale ◽  
Simulation Method ◽  
Steel Bridges ◽  
Steel Bridge ◽  
Structural Failure ◽  
Evolution Simulation ◽  
Multi Scale ◽  
Long Span

Fatigue damage is one of the leading causes for structural failure of long-span steel bridges, but fatigue damage evolution of a long-span steel bridge is very complex. This study proposes a concurrent multi-scale fatigue damage evolution simulation method for long-span steel bridges from micro short crack nucleation and growth to macro structural component damage until mega structural failure. As a case study, the fatigue damage evolution of the Stonecutters Bridge in Hong Kong under cyclic vehicle loading is finally simulated using the proposed method. It shows that the proposed method is computationally feasible even for such a large scale structure. The method can provide a clear picture how micro short cracks grow into macro fatigue damage of structural components and eventually lead to mega structural failure.

Accurate and Rapid Determination of Fatigue Damage in Steel Bridges

1993 ◽  
Vol 119 (1) ◽  
pp. 150-168 ◽  
Author(s):  
C. Hahin ◽  
J. M. South ◽  
J. Mohammadi ◽  
R. K. Polepeddi
Keyword(s):  
Fatigue Damage ◽  
Rapid Determination ◽  
Steel Bridges

Fatigue Damage Retrofitting of Riveted Steel Bridges Using Stop-Holes

1999 ◽  
pp. 223-230 ◽  
Author(s):  
M. Al-Emrani ◽  
R. Crocetti ◽  
B. kesson ◽  
B. Edlund
Keyword(s):  
Fatigue Damage ◽  
Steel Bridges

Probabilistic Fatigue Damage Analysis of Long Span Suspension Bridge Due to Wind Induced Buffeting

2020 ◽  
Vol 980 ◽  
pp. 275-281
Author(s):  
Hu Jun
Keyword(s):  
Fatigue Life ◽  
Fatigue Damage ◽  
Time History ◽  
Suspension Bridge ◽  
Wind Load ◽  
Strong Wind ◽  
Fatigue Reliability ◽  
Long Span ◽  
Fatigue Damage Analysis ◽  
Fluctuating Wind

In order to consider the fluctuating wind load induced fatigue problem of long span suspension bridge, fatigue reliability formula is modified by assuming the fatigue life is accord with the weibull distribution. Based on the accurate bridge buffeting analysis of time history, the stress time history of components of a suspension bridge in east sea China is simulated, and then the fatigue damages and reliabilities are calculated. The results indicate that the main cables and hangers have enough fatigue reliability under the fluctuating wind load, the fatigue failure will not occur; the stiffening girder has larger fatigue damage, under 40 / (m.s-1) mean wind speed action, the girder of mid-support section’s average fatigue life is only 3.103 years, so the girder’s damage under strong wind action should be taken seriously.

Effect of uncertainties in wind speed and direction on the fatigue damage of long-span bridges

2015 ◽  
Vol 100 ◽  
pp. 468-478 ◽  
Author(s):  
Bejoy P. Alduse ◽  
Sungmoon Jung ◽  
O. Arda Vanli ◽  
Soon-Duck Kwon
Keyword(s):  
Wind Speed ◽  
Fatigue Damage ◽  
Long Span Bridges ◽  
Long Span

scholarly journals Detection of fatigue damage in long-span reinforced concrete structures

2018 ◽  
Vol 196 ◽  
pp. 03010 ◽  
Author(s):  
Igor Rubtsov ◽  
Ramidin Alisultanov ◽  
Alexander Zinatullin ◽  
Nikolay Midrigan
Keyword(s):  
Fatigue Damage ◽  
Reinforced Concrete Structures ◽  
Cyclic Loads ◽  
Cycle Asymmetry ◽  
Emergency Situations ◽  
Design Load ◽  
Long Span ◽  
Line Measurement ◽  
On Line ◽  
Short Time

The emergency situations and catastrophes with buildings and structures may be caused by both the short-time loads considerably exceeding the design load values and the cyclic loads exciting the fatigue damage in the structure material. The cyclic influence is characterized by the amplitude, the cycle asymmetry and the number of loading cycles. To reveal all the factors of a cyclic influence is possible by the on-line measurement of stresses or that of strains at the structure under observation.

Influence of Temperature and Increasing Traffic Flow on the Fatigue Damage of Welded Bridge Decks

2007 ◽  
Vol 348-349 ◽  
pp. 341-344 ◽  
Author(s):  
Tong Guo ◽  
Ai Qun Li ◽  
Zhao Xia Li
Keyword(s):  
Traffic Flow ◽  
Fatigue Damage ◽  
Suspension Bridge ◽  
Life Assessment ◽  
Element Analysis ◽  
Influence Of Temperature ◽  
Linear Effect ◽  
Long Span ◽  
Traffic Growth ◽  
Using Data

Fatigue life assessment of critical bridge members using online monitoring data has been investigated in recent years. To make a quick and efficient evaluation, a representative block of strain cycles is usually defined. However, such block sometimes fails to cover the change in fatigue damage by temperature fluctuation and traffic growth, which is important to the life prediction of the welds in a long-span suspension bridge. To find the influence of temperature and traffic volume on the fatigue damage, an equivalent vehicle load method is dedicated through finite element analysis, and the statistical disposition of traffic flow has been conducted, using data from the Runyang Bridge. The influence of traffic growth can be estimated and eliminated from the total damage so that the temperature effect on the fatigue damage is finally obtained. It is found that temperature has a linear effect on the fatigue damage. According to the fitted relationship between fatigue damage, temperature and the traffic flow, a more objective fatigue assessment is undertaken, based on the rain-flow counting method and the Palgren-Miner rule.

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