Abstract
Introduction: Blind analysis contests for predicting the results of several collapse tests on RC frame structure, were carried out by the Collapse Prevention Committee of Architectural Society of China in 2011. This paper presents the adopted numerical models for the collapse simulations of four RC column tests and one RC frame test. Methods: The columns and beams in the RC frame were modeled by beam elements using the fiber model of THUFIBER program. The confined effect of the stirrups in the square RC column was taken into account by using the backbone curve of confined concrete. The methods to determine the key parameters of the adopted model were introduced. Results and Conclusion: The prediction results were compared with the test results, and the adopted models exhibited good predictions for the general behavior of both the RC columns and frame. The model was proposed for investigating the collapse mechanism of RC frames.
Highlights
MethodsThe columns and beams in the RC frame were modeled by beam elements using the fiber model of THUFIBER program
Blind analysis contests for predicting the results of several collapse tests on RC frame structure, were carried out by the Collapse Prevention Committee of Architectural Society of China in 2011
The first author from Institute of Engineering Mechanics participated in these blind analysis contests, and achieved reasonable predictions for the RC column tests (Ranked No.1 out of 22 teams) and RC frame test (Ranked No.4 out of 30 teams) by using the fiber model provided by THUFIBER program [2]
Summary
The columns and beams in the RC frame were modeled by beam elements using the fiber model of THUFIBER program. The methods to determine the key parameters of the adopted model were introduced
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