Flexural Behavior of SRC Columns under Axial and Bilateral Loading

2012 ◽  
Vol 166-169 ◽  
pp. 3383-3390 ◽  
Author(s):  
Shi Ang Zhang ◽  
Zuo Zhou Zhao ◽  
Xiao Gang He
Keyword(s):  
Reinforced Concrete ◽  
Nonlinear Analysis ◽  
Confined Concrete ◽  
Flexural Behavior ◽  
Analysis Program ◽  
Fiber Model ◽  
Steel Reinforced Concrete ◽  
Column Section ◽  
Cover Concrete ◽  
Concrete Confinement

A nonlinear analysis program based on fiber model was developed and used in analyzing the flexural behavior of steel reinforced concrete (SRC) columns under axial and bilateral loading. Concrete different confinement levels for different zones in a SRC column section, such as cover concrete zone, stirrup confined concrete zone and steel confined concrete zone, etc., can be considered. Some SRC tested specimens were simulated using the developed program. It was pointed out that the flexural capacity will be lower-estimated if the concrete confinement was neglected.

scholarly journals The flexural behavior model of bamboo reinforced concrete beams using a hose clamp

2019 ◽  
Vol 276 ◽  
pp. 01033
Author(s):  
Muhtar ◽  
Sri Murni Dewi ◽  
Wisnumurti ◽  
As’ad Munawir
Keyword(s):  
Reinforced Concrete ◽  
Concrete Beam ◽  
Load Capacity ◽  
Reinforced Concrete Beam ◽  
Load Test ◽  
Reinforced Concrete Beams ◽  
Flexural Behavior ◽  
Steel Reinforced Concrete ◽  
And Behavior ◽  
Hose Clamp

Bamboo can use at the simple concrete construction because of the tensile strength of its mechanical property. Meanwhile, a slippery surface of the bamboo caused cracks in the bamboo reinforced concrete beam (BRC) not to spread and yield slip failure between a bamboo bar and concrete. Load test at the BRC beam yield humble load capacity. This study aims to improve the capacity and behavior of BRC beam bending by giving waterproof coating, sand, and hose clamp installation. The beam test specimen with the size of 75x150x1100mm made as many as 26 pieces with the variety of reinforcement. The hose clamp used on the bamboo reinforcement varies with a distance of 0 cm, 15 cm, 20 cm, and 25 cm. The testing using a simple beam with two-point loading. The test results show that BRC beams have different bending behavior compared to the steel reinforced concrete beam (SRC).

Experimental Study on Flexural Behavior of CFRP Bar Reinforced Concrete Bridge Deck with Corrosion and Salt Resistance

2014 ◽  
Vol 1004-1005 ◽  
pp. 1450-1454
Author(s):  
Ze Ying Yang ◽  
Yi Dong Zhang ◽  
Hua Ming Sun ◽  
Qi Hiu Sun ◽  
Jia You Liu
Keyword(s):  
Reinforced Concrete ◽  
Stress Distribution ◽  
Bridge Deck ◽  
Bridge Decks ◽  
Salt Resistance ◽  
Flexural Behavior ◽  
Flexural Capacity ◽  
Steel Reinforced Concrete ◽  
Reinforced Concrete Bridge ◽  
Concrete Bridge Deck

In order to improve bridges durability, this paper designed a kind of bridge deck with carbon fiber reinforced polymer (CFRP) bar reinforced concrete deck, which is salt and corrosion resistant. Through model test, the relationship between load and displacement, ultimate flexural capacity, stress distribution of CFRP bars, concrete strain distribution of the new bridge deck with different CFRP ratio was investigated. New bridge decks present characteristics of partial plastic failure, has similar structure strain trends and stress distribution compared with steel reinforced concrete decks, and accord with plane section assumption. The bond force, between CFRP bar and concrete, controll the flexural capacity of new bridge decks.

scholarly journals Flexural Behavior of Bamboo Reinforced Concrete Beam with Steel Stirrups

2019 ◽  
Vol 8 (4S2) ◽  
pp. 97-99
Keyword(s):  
Reinforced Concrete ◽  
Concrete Beam ◽  
Concrete Beams ◽  
Reinforced Concrete Beam ◽  
Flexural Behavior ◽  
Test Results ◽  
Steel Reinforced Concrete ◽  
Beam Design ◽  
Materials Used ◽  
Bamboo Reinforcement

The flexural behavior of concrete beams reinforced with bamboo was studied experimentally. Bamboo was used as the main reinforcement with different bonding materials in place of steel. A nominal mix of M20 grade concrete was adopted for the beam design. The Bamboo surface was treated with common binding materials like Araldite and Bitumen. Araldite and Bitumen are good binding materials used to connect materials like steel, carbon and many different materials. Two specimens were casted with bitumen coating, two specimens were coated with araldite, two specimens were casted without any binder coating and a specimen was casted using normal steel reinforcement. Beams were casted with bamboo reinforcement and cured for 28 days. Deflection and flexural behavior of the beams were monitored. The test results imply that araldite coating in concrete beams with bamboo reinforcement increased the flexural strength to that of bamboo reinforced concrete using bitumen which is lesser strength to that of steel reinforced concrete beam.

Flexural Behavior of Concrete Beam Reinforced with Steel and FRP Re-Bars

2006 ◽  
Vol 306-308 ◽  
pp. 1367-1372
Author(s):  
Jeong Hun Nam ◽  
Seung Sik Lee ◽  
Soon Jong Yoon ◽  
Won Sup Jang ◽  
S.K. Cho
Keyword(s):  
Reinforced Concrete ◽  
Concrete Beam ◽  
Concrete Beams ◽  
Reinforced Concrete Beams ◽  
Flexural Behavior ◽  
Structural Element ◽  
Steel Reinforced Concrete ◽  
Frp Composite ◽  
Theoretical Predictions ◽  
Coated Surface

FRP composite materials are widely applicable in the construction industries as a load-bearing structural element or a reinforcing and/or repairing materials for the concrete. In this paper, we presented the flexural behavior of steel reinforced concrete beams reinforced with FRP re-bars manufactured by different fibers but the same vinylester resin. Experimental investigation pertaining to the load-deflection and load-strain characteristics of steel reinforced concrete beams reinforced with FRP re-bars with garnet coated surface is presented and the theoretical prediction is also conducted. In the investigation, the effects of FRP re-bar reinforcement in addition to the steel reinforcement are estimated. The experimental results are compared with theoretical predictions. Good agreements are observed.

Flexural behavior of hybrid FRP/steel reinforced concrete beams

2015 ◽  
Vol 129 ◽  
pp. 111-121 ◽  
Author(s):  
Ilker Fatih Kara ◽  
Ashraf F. Ashour ◽  
Mehmet Alpaslan Köroğlu
Keyword(s):  
Reinforced Concrete ◽  
Concrete Beams ◽  
Reinforced Concrete Beams ◽  
Flexural Behavior ◽  
Steel Reinforced Concrete

The influence of strain history and strain gradient on confined concrete

1987 ◽  
Vol 14 (3) ◽  
pp. 336-341
Author(s):  
U. Ersoy ◽  
A. T. Tankut ◽  
M. Uzumeri
Keyword(s):  
Reinforced Concrete ◽  
Strain Gradient ◽  
Flexural Rigidity ◽  
Confined Concrete ◽  
Analytical Models ◽  
Repeated Loading ◽  
Strain History ◽  
Test Results ◽  
Ultimate Capacity ◽  
Concrete Confinement

This paper outlines the results of tests performed to study the effect of strain gradient, strain history, and initial precracking on the efficiency of confinement in reinforced-concrete columns. To this end, five reinforced-concrete specimens with closely spaced ties have been tested under combined flexure and axial load.Two of the specimens were used as control specimens, subjected only to a strain gradient. The remaining three specimens were precracked using different loading schemes and then tested under a combination of flexure and axial load. Two of these specimens were tested with repeated loading.The test results revealed that precracking lowered both the flexural rigidity and the ultimate capacity of the specimens. No significant differences were observed due to the type of loading used to initially crack the specimens. Repetition of loading did not seem to affect the ultimate capacity of the specimens.Comparison of the test results with four analytical models for confined concrete showed that the models that predicted the behaviour of the control specimens accurately, overestimated the capacities of the precracked specimens. The Thompson and Park concrete model accurately predicted the behaviour of the specimens tested with repeated loading. Key words: reinforced concrete, confined concrete, confinement, columns, cyclic loading, precracked column, experimental.

Researches on Rational Reinforcement of Equi-Limb L-Shaped Reinforced Concrete Columns

2013 ◽  
Vol 631-632 ◽  
pp. 759-764
Author(s):  
Chao Sun ◽  
Shu Li Zhao
Keyword(s):  
Reinforced Concrete ◽  
Nonlinear Analysis ◽  
Axial Compression ◽  
Integral Method ◽  
Concrete Columns ◽  
Experimental Results ◽  
Analysis Program ◽  
Reinforced Concrete Columns ◽  
Rational Reinforcement ◽  
Numerical Integral

A nonlinear analysis program for the capacity of L-shaped columns with numerical integral method is complied. Using the program, the Date of Mx-My curves under different axial compression ratios is obtained for five different reinforcement of equi-eimb L-shaped reinforced concrete columns.The maximum moments in various loading angles are analyzed, the cross-section’s ability to bear load influenced by different reinforcement is discussed, The rational reinforcement of equi-limb L-shaped reinforced concrete columns is derived. The date shows that the theoretical values and experimental results meet closely. Finally, Some suggestions in practice design for equi-limb L-shaped columns are given.

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