Behavior and design of slender circular tubed-reinforced-concrete columns subjected to eccentric compression

2016 ◽  
Vol 124 ◽  
pp. 17-28 ◽  
Author(s):  
Xuhong Zhou ◽  
Jiepeng Liu ◽  
Xuanding Wang ◽  
Y. Frank Chen
Keyword(s):  
Reinforced Concrete ◽  
Concrete Columns ◽  
Reinforced Concrete Columns ◽  
Eccentric Compression

Studying the Behavior of Reinforced Concrete Columns Confined by Steel Structure Under Eccentrically Loading

2020 ◽  
Vol 25 (1) ◽  
pp. 65-86
Author(s):  
احسان الطرشة ◽  
علي الجراش ◽  
فلاح مبارك
Keyword(s):  
Reinforced Concrete ◽  
Failure Load ◽  
Rectangular Cross Section ◽  
Steel Structure ◽  
Concrete Columns ◽  
Reinforced Concrete Columns ◽  
Compression Load ◽  
Reinforced Polymer ◽  
Eccentric Compression ◽  
Structure Thickness

Abstract This research paper presents an analytical study of a number of Reinforced  Concrete Columns models which have rectangular cross section and confined/unconfined by steel Structure of vertical angles and horizontal plates. Columns are subjected to centric and eccentric compression load. The objective is to know how far the bracing is effective in increasing the strength of these columns. This type of strengthening is considered better than the concrete Structure, Carbon Fiber Reinforced Polymer (CFRP) and other types because it has many features, easy and fast to be constructed. The study demonstrated that the bracing by steel Structure led to increase the strength in large ratios and had been clear that once the thickness of steel Structure is increased, the strength increases. And once the eccentricity is increased, the strength decreases and also the failure load. Keywords: reinforced concrete columns, bracing, steel structure, centriccompression, eccentric compression, steel structure thickness, strengtheningeffectiveness, failure load.

Experimental Study on Strengthening with Bonded Steel Angles for Reinforced Concrete Columns after Fire

2013 ◽  
Vol 639-640 ◽  
pp. 1120-1126
Author(s):  
Guo Feng Wang ◽  
Kai Yu ◽  
Jun Hua Li ◽  
Dong Liang Qiu
Keyword(s):  
Reinforced Concrete ◽  
Bearing Capacity ◽  
Concrete Columns ◽  
Fire Damage ◽  
Tension Zone ◽  
Test Results ◽  
Reinforced Concrete Columns ◽  
Standard Fire ◽  
Eccentric Compression ◽  
Steel Angles

The mechanical properties of fire-damage reinforced concrete columns strengthened with bonded steel angles were studied. Nine specimens were tested, including three normal temperature controlled columns, six heated under ISO834 standard fire. After exposure to fire, three of the six were rehabilitated with the bonded steel angles. It was shown by test results that the destructive properties of reinforced concrete columns with bonded steel angles may change and the small eccentric compression specimens may become large eccentric compression due to the steel angles increased the amount of steel in the tension zone of the specimen. In this research, compared with these under normal temperature, the bearing capacity of specimens which were exposure to fire was only ranged from 0.25 to 0.37 times. But the bearing capacity of specimens rehabilitated by the bonded steel angles can increase to 2.86 to 4.04 times of the originals and it can reach to the level of that in normal temperature.

scholarly journals COMPUTER MODELLING OF THE STRESS-STRAIN STATE OF PLUG-IN CONNECTIONS OF REINFORCED CONCRETE COLUMNS WITH THE COVERAGE PLATES UNDER THE OUT-OF-SQUARE ECCENTRIC COMPRESSION

2018 ◽  
Vol 14 (3) ◽  
pp. 126-135
Author(s):  
Boris S. Sokolov ◽  
Evgeniy O. Troshkov
Keyword(s):  
Reinforced Concrete ◽  
Strain State ◽  
Computer Modelling ◽  
Concrete Columns ◽  
Stress Strain ◽  
Reinforced Concrete Columns ◽  
Stress Strain State ◽  
Eccentric Compression ◽  
Research Plan ◽  
Bearing System

he technique and results of computer simulation of the stress-strain state of plug joints of reinforced concrete columns with overlap plates under the effect of out-of-square eccentric compression are described. An analysis of the results obtained is provided to optimize the experimental research plan and to develop a technique for calculating the strength of the joints used in the UICSS bearing system.

Failure Analysis of Reinforced Concrete Columns after High Temperature

2012 ◽  
Vol 157-158 ◽  
pp. 1578-1581 ◽  
Author(s):  
Li Li Bai ◽  
Tao Song
Keyword(s):  
Reinforced Concrete ◽  
High Temperature ◽  
Failure Analysis ◽  
Failure Modes ◽  
Limit State ◽  
Concrete Columns ◽  
State Equation ◽  
Single Factor ◽  
Reinforced Concrete Columns ◽  
Eccentric Compression

Mechanics models of RC(reinforced concrete) columns is established, after the limit state equation was formed, the failure modes of RC eccentric compression columns after high temperature is analyzed under considering various failure paths. Analysis results indicates that failure analysis is not safe under considering single failure mode, so comprehensive considering failure modes is more matching the true situation than only considering single factor when evaluate reliability of RC eccentric compression columns post-fire

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