Probabilistic Seismic Capacity Models for RC Bridge Columns

2013 ◽  
Vol 353-356 ◽  
pp. 2028-2032
Author(s):  
Wei Dong Zhuo ◽  
Wu Hua Zeng
Keyword(s):  
Reinforced Concrete ◽  
Damage Model ◽  
Damage Index ◽  
Concrete Columns ◽  
Bridge Columns ◽  
Test Results ◽  
Seismic Capacity ◽  
Modified Model ◽  
Performance Levels ◽  
Rc Bridge Columns

Reinforced concrete (RC) columns are the vital members in bridge under the action of earthquake. In this paper, a modified Park-Ang damage model with nonlinear combination of the deformation and the hysteretic energy is proposed as a measure of RC bridge columns damage. The nonlinear combination coefficient of the modified model has been calculated based on the 151 cyclic test results of flexure dominant reinforced concrete columns. In additional, the correlation between performance levels and the values of damage index is presented. It is suggested that the scatter of the modified model at different performance levels is significantly reduced compared to the original Park-Ang damage model. At last, the probabilistic capacity models for RC bridge columns are applied to perform a damage analysis.

scholarly journals Hysteretic Behavior of Steel Reinforced Concrete Columns Based on Damage Analysis

2019 ◽  
Vol 9 (4) ◽  
pp. 687 ◽  
Author(s):  
Bin Wang ◽  
Guang Huo ◽  
Yongfeng Sun ◽  
Shansuo Zheng
Keyword(s):  
Reinforced Concrete ◽  
Damage Index ◽  
Hysteresis Loops ◽  
Time History ◽  
Hysteretic Behavior ◽  
Loading Path ◽  
Test Results ◽  
Hysteresis Model ◽  
Skeleton Curve ◽  
Steel Reinforced Concrete

With the aim to model the seismic behavior of steel reinforced concrete (SRC) frame columns, in this research, hysteresis and skeleton curves were obtained based on the damage test results of SRC frame columns under low cyclic repeat loading and the hysteretic behavior of the frame columns was further analyzed. Then, the skeleton curve and hysteresis loops were further simplified. The simplified skeleton curve model was obtained through the corresponding feature points obtained by mechanical and regression analysis. The nonlinear combination seismic damage index, which was developed by the test results and can well reflect the effect of the loading path and the number of loading cycle of SRC frame columns, was used to establish the cyclic degradation index. The strength and stiffness degradation rule of the SRC frame columns was analyzed further by considering the effect of the accumulated damage caused by an earthquake. Finally, the hysteresis model of the SRC frame columns was established, and the specific hysteresis rules were given. The validity of the developed hysteresis model was verified by e comparison between the calculated results and the test results. The results showed that the model could describe the hysteresis characteristics of the SRC frame columns under cyclic loading and provide guidance for the elastoplastic time-history analysis of these structures.

Study on Performance Index for Reinforced Concrete Bridge Structures

2012 ◽  
Vol 193-194 ◽  
pp. 1079-1085
Author(s):  
Ben Yan Lu ◽  
Zhong Bin Cai ◽  
Zhong Qin Ye ◽  
Ya Jun Chen
Keyword(s):  
Reinforced Concrete ◽  
Seismic Design ◽  
Bridge Columns ◽  
Concrete Bridge ◽  
Performance Levels ◽  
Reinforced Concrete Bridge ◽  
Flexural Failure ◽  
Operational Life ◽  
Bridge Structures ◽  
Performance Based Seismic Design

According to the failure characteristics of reinforced concrete bridge columns and the need of performance based seismic design in bridge, reinforced concrete bridge column performance levels, which are categorized into fully operational, temporarily operational, reparably operational, life safe and near collapse levels are established. To relate bridge damage to socio-economic descriptions at the five designated performance levels, qualitative indices are established. Considering field investigations following a seismic event, quantitative indices for the same five designated performance levels are proposed. Based on the statistical data of 154 seismic performance tests of RC bridge columns with circular section subjected to flexural failure, drift ratio limit for the same five designated performance levels are put forward. It can be used to determine displacement of pier top in performance based seismic design.

scholarly journals Automated Damage Index Estimation of Reinforced Concrete Columns for Post-Earthquake Evaluations

2015 ◽  
Vol 141 (9) ◽  
pp. 04014228 ◽  
Author(s):  
Stephanie G. Paal ◽  
Jong-Su Jeon ◽  
Ioannis Brilakis ◽  
Reginald DesRoches
Keyword(s):  
Reinforced Concrete ◽  
Damage Index ◽  
Concrete Columns ◽  
Reinforced Concrete Columns ◽  
Index Estimation

Damage Analysis of High-Rise Building under Seismic Action Based on Damping Ratio Measurement

2011 ◽  
Vol 255-260 ◽  
pp. 2355-2359
Author(s):  
Cheng Qing Liu ◽  
Xin Long Xiao ◽  
Rui Liang ◽  
Shi Chun Zhao
Keyword(s):  
Reinforced Concrete ◽  
Damage Detection ◽  
Damping Ratio ◽  
Damage Model ◽  
Seismic Action ◽  
Test Results ◽  
Ratio Measurement ◽  
High Rise ◽  
High Rise Building ◽  
Efficient Detection

Based on the current methods of damage detection, a new detection damage model was proposed in order to search a more efficient detection method for reinforced concrete high-rise building damage induced by earthquake. This model is based on the regularity of change in the damping ratio of high-rise buildings, and the high order modes, mode participation coefficient and measure method of natural frequency, together with the type of structures, are taken into account in the model. The shaking test results for a model of reinforced concrete high-rise buildings show that the damage detection results based on the proposed model are close to the test results.

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