Database trends and critical review of seismic performance tests on high strength steel reinforced concrete components

2021 ◽  
Vol 239 ◽  
pp. 112092 ◽  
Author(s):  
W.M. Hassan ◽  
M. Elmorsy
Keyword(s):  
Reinforced Concrete ◽  
Seismic Performance ◽  
Critical Review ◽  
High Strength Steel ◽  
High Strength ◽  
Performance Tests ◽  
Steel Reinforced Concrete

scholarly journals Analysis and Modification of Methods for Calculating Axial Load Capacity of High-Strength Steel-Reinforced Concrete Composite Columns

Materials ◽  
2021 ◽  
Vol 14 (22) ◽  
pp. 6860
Author(s):  
Jun Wang ◽  
Yuxin Duan ◽  
Yifan Wang ◽  
Xinran Wang ◽  
Qi Liu
Keyword(s):  
Reinforced Concrete ◽  
Bearing Capacity ◽  
High Strength Steel ◽  
Slenderness Ratio ◽  
High Strength ◽  
Confinement Effect ◽  
Test Results ◽  
Composite Columns ◽  
Steel Reinforced Concrete ◽  
Modified Formula

To investigate the applicability of the methods for calculating the bearing capacity of high-strength steel-reinforced concrete (SRC) composite columns according to specifications and the effect of confinement of stirrups and steel on the bearing capacity of SRC columns. The axial compression tests were conducted on 10 high-strength SRC columns and 4 ordinary SRC columns. The influences of the steel strength grade, the steel ratio, the types of stirrups and slenderness ratio on the bearing capacity of such members were examined. The analysis results indicate that using high-strength steel and improving the steel ratio can significantly enhance the bearing capacity of the SRC columns. When the slenderness ratio increases dramatically, the bearing capacity of the SRC columns plummets. As the confinement effect of the stirrups on the concrete improves, the utilization ratio of the high-strength steel in the SRC columns increases. Furthermore, the results calculated by AISC360-19(U.S.), EN1994-1-1-2004 (Europe), and JGJ138-2016(China) are too conservative compared with test results. Finally, a modified formula for calculating the bearing capacity of the SRC columns is proposed based on the confinement effect of the stirrups and steel on concrete. The results calculated by the modified formula and the finite element modeling results based on the confinement effect agree well with the test results.

Experimental and numerical investigations of fire resistance of continuous high strength steel reinforced concrete T-beams

2015 ◽  
Vol 78 ◽  
pp. 142-154 ◽  
Author(s):  
Qingfeng Xu ◽  
Chongqing Han ◽  
Yong C. Wang ◽  
Xiangmin Li ◽  
Lingzhu Chen ◽  
...  
Keyword(s):  
Reinforced Concrete ◽  
Fire Resistance ◽  
High Strength Steel ◽  
High Strength ◽  
Steel Reinforced Concrete ◽  
Numerical Investigations

Experimental and Numerical Studies on Seismic Behavior of Q460 High Strength Steel Reinforced Concrete Column

2018 ◽  
Vol 763 ◽  
pp. 763-770
Author(s):  
Su Wen Chen ◽  
Meng Yang ◽  
Zhao Xin Hou ◽  
Guo Qiang Li ◽  
Qing Liu
Keyword(s):  
Reinforced Concrete ◽  
Numerical Model ◽  
High Strength Steel ◽  
Seismic Behavior ◽  
High Strength ◽  
Concrete Column ◽  
Reinforced Concrete Column ◽  
Steel Reinforced Concrete ◽  
Numerical Studies ◽  
Seismic Design Code

High strength steel reinforced concrete (HSRC) column refers to steel reinforced concrete column using high strength steel with its yield strength over 420MPa. So far, research on seismic behavior of HSRC columns is limited. This paper presents experimental and numerical studies on seismic behavior of HSRC columns. Two Q460 high strength steel reinforced concrete columns have been tested under low cyclic loading with constant axial compression ratio of 0.3. Flexural failure is observed in the test. From the hysteresis curves, the specimens exhibit good ductility and satisfactory energy dissipation capacity. Displacement ductility factors are larger than 2. When load descends to 85% of the peak load, the ultimate drift ratios of two specimens are 1/29 and 1/26 respectively, which meet the requirements of Chinese Seismic Design code (GB 50011). To study the seismic behavior of HSRC columns more comprehensively, a numerical model has been established for simulating the experiment using OpenSees, which adopts nonlinear beam-column element and fiber model. The numerical result fits the test data well, which validates the effectiveness of numerical model. Parametric study is then carried out to further investigate the seismic behavior of HSRC columns.

Proportion of High-Strength Steel Bars in Reinforced Concrete Ductile Piers

2013 ◽  
Vol 838-841 ◽  
pp. 605-610
Author(s):  
Xiao Xiao ◽  
Zhao Hui Li ◽  
Sheng Bo Liu ◽  
Qiong Fang Wu
Keyword(s):  
Finite Element ◽  
Reinforced Concrete ◽  
Seismic Performance ◽  
High Strength Steel ◽  
High Strength ◽  
Longitudinal Reinforcement ◽  
Finite Element Software ◽  
Steel Bars ◽  
Reasonable Range

This paper mainly focuses on the affect factors of ductility of reinforced concrete pier with the high-strength longitudinal reinforcement and stirrups. By finite element software ANSYS, changed the amount of longitudinal reinforcement and high-strength stirrups in the piers, the ductility performance of concrete piers was studied. The results show that under certain conditions, the ductility coefficient of concrete piers with high-strength reinforcement can increase with the amount of stirrups. In addition, high-strength longitudinal reinforcement can improve the ductility performance of the concrete piers, but it should be controlled in a reasonable range. If there are too much high-strength longitudinal reinforcement in the concrete piers, the ductility performance will be lower, and structural seismic performance will also be affected.

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