Experimental study of jacket height and reinforcement effects on seismic retrofitting of concrete columns

Structures ◽  
2021 ◽  
Vol 31 ◽  
pp. 1084-1095
Author(s):  
Ali Zaiter ◽  
Tze Liang Lau
Keyword(s):  
Experimental Study ◽  
Concrete Columns ◽  
Seismic Retrofitting

EXPERIMENTAL STUDY ON JOINT OF SEISMIC RETROFITTING BRACE FOR STEEL STRUCTURE USING SHEAR-KEY PLATE ADHERED TO CONCRETE SLAB

2005 ◽  
Vol 70 (596) ◽  
pp. 133-140 ◽  
Author(s):  
Yasushi ICHIKAWA ◽  
Tsugutomo OKAYASU ◽  
Hiroshi NAKAMURA ◽  
Satoshi YAMADA ◽  
Akira WADA
Keyword(s):  
Experimental Study ◽  
Concrete Slab ◽  
Steel Structure ◽  
Seismic Retrofitting ◽  
Shear Key

scholarly journals Experimental study of the strengthening effect of reinforced concrete columns jacketed under service load level

2018 ◽  
Vol 183 ◽  
pp. 02008 ◽  
Author(s):  
Pavlo Krainskyi ◽  
Yaroslav Blikharskyy ◽  
Roman Khmil ◽  
Zinoviy Blikharskyy
Keyword(s):  
Experimental Study ◽  
Reinforced Concrete ◽  
Concrete Columns ◽  
Load Level ◽  
Strengthening Effect ◽  
Engineering Structures ◽  
Reinforced Concrete Columns ◽  
Technical Modification ◽  
Service Load

The need of structural retrofitting and strengthening of different buildings, engineering structures or their elements is always present. Among the main reasons are demages and material deterioration due to aging, improper maintenance or physical damages; planed repairs; reconstruction or extension of the building; technical modification or complete change of operations inside the building or the structure, etc. In some cases operation of the building during retrofitting or strengthening of its structures has to be partially or fully stopped. In other cases the strengthening process takes place while the building is still operational which means that structures are strengthened under service loads. The main goal of this research is to determine the strengthening effect of reinforced concrete jacketing applied to columns under service load level. For that the experimental study of six reinforced concrete columns were carried out: four reference columns, both strengthened by jacketing and unstrengthened and two strengthened under service load. The main results of the research are presented.

Experimental Study on the Shear Properties of Concrete Column Repaired by CFRP

2012 ◽  
Vol 166-169 ◽  
pp. 1598-1602
Author(s):  
Xi Guang Cui ◽  
Zhi Wei Wang ◽  
Nan Ma ◽  
Zhong Long Yu
Keyword(s):  
Experimental Study ◽  
Concrete Columns ◽  
Concrete Column ◽  
Longitudinal Reinforcement ◽  
Simulation Data ◽  
Carbon Fiber Reinforced Plastics ◽  
Reinforced Plastics ◽  
Fiber Reinforced Plastics ◽  
Main Factors ◽  
Good Agreement

In this paper, shear study was carried out on four reinforced concrete columns in which two columns were reinforced by CFRP (carbon fiber reinforced plastics). The three main factors: shear span ratio, ratio of longitudinal reinforcement, CFRP paste quantity (layer numbers) were analysied since they affect the reinforced effect of CFRP. Through the experiment and simulation, the results indicate that the shear strength of CFRP strengthened concrete columns is obvious, which shows good agreement with experimental and simulation data.

Mechanical Properties of Large Scale Confined Concrete

2011 ◽  
Vol 94-96 ◽  
pp. 1983-1988
Author(s):  
Jia Song ◽  
Zhen Bao Li ◽  
Yong Ping Xie ◽  
Xiu Li Du ◽  
Yue Gao
Keyword(s):  
Mechanical Properties ◽  
Experimental Study ◽  
Axial Compression ◽  
Large Scale ◽  
Plain Concrete ◽  
Concrete Columns ◽  
Confined Concrete ◽  
Transverse Reinforcement ◽  
Test Results ◽  
Reinforcement Configuration

An experimental study was made of the mechanical properties of large scale confined concrete subjected to the axial compression test. Eleven tied concrete columns and six plain concrete prisms were tested. In the test, each specimen had the same transverse reinforcement configuration, and similar volumetric ratio of lateral steel, while different size. The test results in this paper indicate that the size of the specimen has no obvious relationship with the ultimate strength, however, it does affect the post-peak ductility to some extent. As a supplement to the experimental study, a finite element method was adopted to imitate the mechanical behavior of the confined concrete under axial compression. The results of the imitation in this paper indicate the confinement mechanism of large scale specimens.

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