Experimental Study of Reinforced Concrete Frame Rehabilitated by Concentric and Eccentric Bracing
Authors
Abstract:
Adding steel braces to reinforced concrete frames is a common way for seismic rehabilitation of these structures. Due to ease of installation and the possibility of creating openings in the braced bays, this method of rehabilitation has been more preferred than using shear walls. In this paper, three experimental specimens including a reinforced concrete frame, a reinforced concrete frame with concentric bracing and a reinforced concrete frame with eccentric bracing are constructed and their cyclic behavior investigated and compared with each other. Results show that the ultimate loads of the both concrete frames with concentric and eccentric braces are about 2.11 and 1.9 times more than that of reinforced concrete frame, respectively. Ductility of rehabilitated frame by eccentric bracing is more than that of reinforced concrete frame and rehabilitated frame by concentric bracing too. Moreover, the absorbed energy of the rehabilitated frames with eccentric and concentric bracing is about 1.98 and 1.63 times more than that of concrete frame.
similar resources
Numerical and Experimental Investigations on the Behavior of Steel-reinforced Concrete Columns Subjected to Eccentric Loading
Steel-reinforced concrete (SRC) columns, which are classified as composite columns, became the most widely used in recent years; because of their extensive advantages over the reinforced concrete and the steel columns. In this paper, the ductility index and its influential factors were explored to investigate the behavior of SRC columns. A straightforward approach was then proposed by establish...
full textexperimental investigation of masonry infilled reinforced concrete frame
an experimental study is conducted on three ½ scales, single-story, single-bay, frame specimens. the first specimen was a reinforced concrete frame with solid-brick infill. the second specimen was a reinforced concrete frame with hollow clay perforated-brick infill. the last specimen was a reinforced concrete frame without any infill. these three specimens were tested by pseudostatic method. di...
full textExperimental And Numerical Study On Softening And Pinching Effects Of Reinforced Concrete Frame
The response analysis of reinforced concrete (RC) structures subjected to strong earthquake motions requires material models that are able to simulate cyclic deformation and damage realistically. This paper presents the results of a study of pinching and softening behaviour in an RC frame subjected to cyclic loading. The experiment was conducted on a full-scale RC frame at Indian Institute of T...
full textExperimental Study and Modeling of Reinforced Concrete Beams Strengthened by Post-Tensioned External Reinforcing Bars
The utilization of unbounded external reinforcing bars is one of the strengthening methods used after loading stage and before failure. The method has been used in different forms to strengthen members of reinforced concrete structures. To investigate the effect of utilization of post-tensioned reinforcing bars in this method of strengthening, a number of reinforced concrete beams was tested. S...
full textExperimental Study on Seismic Performance of Reinforced Concrete Frame Columns Supported with Post-build Wing Walls
Abstract: Six specimens of concrete frame columns reinforced by post-build wing walls on the opposite faces were designed and fabricated to investigate their seismic performance. Axial compression ratio was considered as the critical factor and divided into 0.31, 0.36, and 0.40 before reinforcement. HRB400 steel grade was used to the longitudinal bar and the ratio of longitudinal reinforcement ...
full textEffect of Steel Confinement on Behavior of Reinforced Concrete Frame
The strength and ductility of concrete improve under multi-axial compressive stress due to confinement effect. Some parameters are effective for considering the confinement in concrete and various stress-strain models were developed by different researchers. Longitudinal and transverse reinforcement steels can influence on confinement in reinforced concrete members. In this paper, various stres...
full textMy Resources
Journal title
volume 8 issue 1
pages 71- 80
publication date 2020-02-01
By following a journal you will be notified via email when a new issue of this journal is published.
Hosted on Doprax cloud platform doprax.com
copyright © 2015-2023