Experimental and numerical investigations on seismic performance of RC bridge piers considering buckling and low-cycle fatigue of high-strength steel bars

2021 ◽  
Vol 227 ◽  
pp. 111464 ◽  
Author(s):  
Yang Ding ◽  
Dianqi Wu ◽  
Junsheng Su ◽  
Zhong-Xian Li ◽  
Liang Zong ◽  
...  
Keyword(s):  
Seismic Performance ◽  
High Strength Steel ◽  
Low Cycle Fatigue ◽  
High Strength ◽  
Bridge Piers ◽  
Cycle Fatigue ◽  
Numerical Investigations ◽  
Steel Bars ◽  
Rc Bridge Piers

Comparative study on seismic vulnerability of RC bridge piers reinforced with normal and high-strength steel bars

Structures ◽  
2021 ◽  
Vol 29 ◽  
pp. 1562-1581
Author(s):  
Junsheng Su ◽  
Zhong-Xian Li ◽  
Rajesh Prasad Dhakal ◽  
Chao Li ◽  
Fangbo Wang
Keyword(s):  
Comparative Study ◽  
High Strength Steel ◽  
Seismic Vulnerability ◽  
High Strength ◽  
Bridge Piers ◽  
Steel Bars ◽  
Rc Bridge Piers

Ultra-low Cycle Fatigue Fracture of High-Strength Steel Q460C and Its Weld

2018 ◽  
Vol 30 (11) ◽  
pp. 04018280 ◽  
Author(s):  
Fei Yin ◽  
Lu Yang ◽  
Liang Zong ◽  
Xiyue Liu ◽  
Yuanqing Wang
Keyword(s):  
Fatigue Fracture ◽  
High Strength Steel ◽  
Low Cycle Fatigue ◽  
High Strength ◽  
Cycle Fatigue

scholarly journals Low-cycle fatigue behaviour of laser welded high-strength steel DOMEX 700 MC

2018 ◽  
Vol 157 ◽  
pp. 05013 ◽  
Author(s):  
Peter Kopas ◽  
Milan Sága ◽  
František Nový ◽  
Bohuš Leitner
Keyword(s):  
Fatigue Life ◽  
Welded Joints ◽  
High Strength Steel ◽  
Fatigue Testing ◽  
Low Cycle Fatigue ◽  
High Strength ◽  
Fatigue Behaviour ◽  
Total Strain Amplitude ◽  
Cycle Fatigue ◽  
Fatigue Life Analysis

The article presents the results of research on low cycle fatigue strength of laser welded joints vs. non-welded material of high-strength steel DOMEX 700 MC. The tests were performed under load controlled using the total strain amplitude ɛac. The operating principle of the special electro-mechanic fatigue testing equipment with a suitable clamping system was working on 35 Hz frequency. Fatigue life analysis was conducted based on the Manson-Coffin-Basquin equation, which made it possible to determine fatigue parameters. Studies have shown differences in the fatigue life of original specimens and laser welded joints analysed, where laser welded joints showed lower fatigue resistance. In this article a numerical analysis of stresses generated in bending fatigue specimens has been performed employing the commercially available FEM-program ADINA.

scholarly journals High-Strength Reinforcing Steel Bars: Low Cycle Fatigue Behavior Using RGB Methodology

2021 ◽  
Vol 15 (1) ◽  
Author(s):  
Jorge E. Egger ◽  
Fabian R. Rojas ◽  
Leonardo M. Massone
Keyword(s):  
Fatigue Life ◽  
Strain Amplitude ◽  
Low Cycle Fatigue ◽  
High Strength ◽  
Image Correlation ◽  
Total Strain ◽  
Total Strain Amplitude ◽  
Reinforcing Steel ◽  
Cycle Fatigue ◽  
Steel Bars

AbstractLow cycle fatigue life of high-strength reinforcing steel bars (ASTM A706 Grade 80), using photogrammetry by RGB methodology is evaluated. Fatigue tests are performed on specimens under constant axial displacement with total strain amplitudes ranging from 0.01 to 0.05. The experimental observations indicate that buckling of high-strength reinforcing bars results in a damaging degradation of their fatigue life performance as the slenderness ratio increases, including an early rebar failure as the total strain amplitude increases since it achieves the plastic range faster. In addition to this, the results show that the ratio of the ultimate tensile strength to yield strength satisfies the minimum of 1.25 specified in ASTM A706 for reinforcement. On the other hand, the RGB methodology indicates that the axial strains measured by photogrammetry provide more accurate data since the registered results by the traditional experimental setup do not detect second-order effects, such as slippage or lengthening of the specimens within the clamps. Moreover, the RGB filter is faster than digital image correlation (DIC) because the RGB methodology requires a fewer computational cost than DIC algorithms. The RGB methodology allows to reduce the total strain amplitude up to 45% compared to the results obtained by the traditional setup. Finally, models relating total strain amplitude with half-cycles to failure and total strain amplitude with total energy dissipated for multiple slenderness ratios (L/d of 5, 10, and 15) are obtained.

scholarly journals On the Low Cycle Fatigue Behavior in the Longitudinally Butt Welded Joints between High Strength Steel and Mild Steel

1977 ◽  
Vol 1977 (142) ◽  
pp. 236-244
Author(s):  
Kinichi Nagai ◽  
Mitsumasa Iwata ◽  
Kenhichiro Kurihara ◽  
Junkichi Yagi ◽  
Yasumitsu Tomita
Keyword(s):  
Mild Steel ◽  
Welded Joints ◽  
High Strength Steel ◽  
Low Cycle Fatigue ◽  
Fatigue Behavior ◽  
High Strength ◽  
Cycle Fatigue

scholarly journals Masing Behavior and Microstructural Change of Quenched and Tempered High-Strength Steel Under Low Cycle Fatigue

2019 ◽  
Vol 32 (11) ◽  
pp. 1346-1354 ◽  
Author(s):  
Feng-Mei Bai ◽  
Hong-Wei Zhou ◽  
Xiang-Hua Liu ◽  
Meng Song ◽  
Ya-Xin Sun ◽  
...  
Keyword(s):  
High Strength Steel ◽  
Low Cycle Fatigue ◽  
High Strength ◽  
Microstructural Change ◽  
Cycle Fatigue
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