Seismic performance of high strength reinforced concrete columns

2009 ◽  
Vol 31 (6) ◽  
pp. 697-716 ◽  
Author(s):  
Hakim Bechtoula ◽  
Susumu Kono ◽  
Fumio Watanabe
Keyword(s):  
Reinforced Concrete ◽  
Seismic Performance ◽  
High Strength ◽  
Concrete Columns ◽  
Reinforced Concrete Columns

scholarly journals Size Effect on the Seismic Performance of High-Strength Reinforced Concrete Columns with Different Shear Span-to-Depth Ratios

2018 ◽  
Vol 2018 ◽  
pp. 1-19
Author(s):  
Chunyi Yu ◽  
Hua Ma ◽  
Yongping Xie ◽  
Zhenbao Li ◽  
Zhenyun Tang
Keyword(s):  
Reinforced Concrete ◽  
Size Effect ◽  
Seismic Performance ◽  
Factor Of Safety ◽  
Shear Failure ◽  
High Strength ◽  
Concrete Columns ◽  
Reinforced Concrete Columns ◽  
Local Factor ◽  
Shear Span

The size effect on the seismic performance of conventional reinforced concrete columns has been observed in terms of flexural failure and shear failure. Under earthquake loading, slender columns experience flexural failure, and short columns experience flexure-shear failure and shear failure. However, the effect of section size on the seismic performance of high-strength reinforced concrete columns under the conditions of different shear span-to-depth ratios requires further confirmation. For this purpose, six high-strength reinforced concrete columns with shear span-to-depth ratios of 2 and 4 were subjected to cyclic loading in this study. The experimental results indicated that relative nominal flexural strength, energy dissipation coefficient, factor of safety, and local factor of safety all exhibited a strong size effect by decreasing with increasing column size. Furthermore, the size effect became stronger as the shear span-to-depth ratio was increased, except for average energy dissipation coefficient. The observed changes in the factor of safety were in good agreement with the Type 2 size effect model proposed by Bažant. Thus, based on the local factor of safety and Bažant’s Type 2 model, the code equation for moment capacity of different shear span-to-depth ratios was modified to provide a consistent factor of safety regardless of column size.

Experimental Study on Seismic Performance of HRB400 Reinforced Concrete Columns under Cyclic Loading

2011 ◽  
Vol 287-290 ◽  
pp. 703-707
Author(s):  
Yan Han ◽  
Hong Cheng Guan ◽  
Zhen Li
Keyword(s):  
Experimental Study ◽  
Reinforced Concrete ◽  
Seismic Performance ◽  
High Strength ◽  
Concrete Columns ◽  
Reinforced Concrete Columns ◽  
Failure Patterns ◽  
Steel Bar ◽  
Hysteretic Characteristics ◽  
Ductile Behavior

Through experimental study on three HRB400 steel bar reinforced concrete columns subjected to low cyclic reversed loading, the failure patterns, hysteretic curves and skeleton curves were obtained. The influence of longitudinal high-strength reinforcement ratio upon the hysteretic characteristics, ductile behavior and ability of energy dissipation were analyzed. The results show that the main failure pattern was bending failure; and with the increscent of the longitudinal high-strength reinforcing steel bar ratio, the columns can endure larger seismic loads and displacement; the seismic performance of the whole reinforced concrete columns can be effectively improved by arranging reasonable high-strength steel bars.

Experimental Study on Seismic Performance of RC Composite Core Walls with Steel Tube-Reinforced Concrete Columns and Concealed Steel Trusses under Eccentric Horizontal Loading

2010 ◽  
Vol 163-167 ◽  
pp. 2267-2273 ◽  
Author(s):  
Hong Ying Dong ◽  
Wan Lin Cao ◽  
Jian Wei Zhang
Keyword(s):  
Reinforced Concrete ◽  
Seismic Performance ◽  
Load Capacity ◽  
Concrete Columns ◽  
Steel Tube ◽  
Reinforced Concrete Columns ◽  
Deterioration Process ◽  
Combined Action ◽  
Process Energy ◽  
Steel Trusses

Two 1/6 scale core walls, including one RC core wall with steel tube-reinforced concrete columns and concealed steel trusses and one conventional RC core wall, were tested under eccentric horizontal cyclic loading. The load-capacity, ductility, hysteresis characteristics, stiffness, stiffness deterioration process, energy dissipation and damage characteristics of the two specimens were compared and discussed in this paper. It shows that the seismic performance of the RC core walls under combined action could be improved by setting the concealed steel trusses in the walls and using the steel tube-reinforced concrete columns as the boundary elements.

Seismic performance of reinforced concrete columns confined with two layers of stirrups

2018 ◽  
Vol 27 (12) ◽  
pp. e1484 ◽  
Author(s):  
Wei Li ◽  
Linzhu Sun ◽  
Junliang Zhao ◽  
Pengfei Lu ◽  
Fang Yang
Keyword(s):  
Reinforced Concrete ◽  
Seismic Performance ◽  
Concrete Columns ◽  
Reinforced Concrete Columns
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