EXPERIMENTAL STUDY ON THE LOAD-DEFORMATION CHARACTERISTICS OF CONCRETE FILLED CIRCULAR STEEL TUBE SHORT COLUMNS UNDER AXIAL COMPRESSION CONSIDERING SIZE EFFECT

Measure the temperature change of concrete-filled steel tubular with high strength low heat micro-expansive in its hardening process with different mix proportion. Study self-stress of high strength low-heat micro-expansive and study the relations of the expansive admixtures quantity and its changing regularity with the time. Observe the fail of axial compression short column of concrete-filled steel tubular with high strength expansive under vertical loading, study the changing regularity of its stress under loading.

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Experimental study of push-out test of circular steel tube with various types of shear connectors

2018 1st International Scientific Conference of Engineering Sciences - 3rd Scientific Conference of Engineering Science (ISCES) ◽

10.1109/isces.2018.8340565 ◽

2018 ◽

Author(s):

Amer M. Ibrahim ◽

Huda M. Mubarak ◽

AbdulMuttalib I. Said

Keyword(s):

Experimental Study ◽

Steel Tube ◽

Shear Connectors ◽

Circular Steel Tube ◽

Push Out

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Experimental Study on the Axial Loading Tests of RC Columns Strengthened with Steel Tube

Applied Mechanics and Materials ◽

10.4028/www.scientific.net/amm.204-208.2878 ◽

2012 ◽

Vol 204-208 ◽

pp. 2878-2882 ◽

Cited By ~ 5

Author(s):

Miao Zhou ◽

Jian Wei Li ◽

Jing Min Duan

Keyword(s):

Experimental Study ◽

Bearing Capacity ◽

Axial Loading ◽

Steel Tube ◽

Experimental Results ◽

Engineering Practice ◽

Rc Columns ◽

Short Columns ◽

Loading Tests ◽

Engineering Staff

This paper carries out a series of experimental study on 6 column specimens, analyses and compares with the different parameters on the axial loading tests of RC columns and RC columns strengthened with steel tube. The experimental results show that the RC columns strengthened with steel tube take full advantage of loading properties of both materials, thus greatly improve the bearing capacity of specimens. With the same wall thickness steel tube, the improving degree of bearing capacity of long columns is bigger than the short columns, and the reinforcement effect is more obvious. The experimental results can offer reference for scientific research and engineering staff, and promote this reinforcement method to be widely used in engineering practice.

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Ultimate Bearing Capacity Analysis of Axially Compressive Circular Steel Tube Columns Filled with Bar-Reinforced Concrete

Applied Mechanics and Materials ◽

10.4028/www.scientific.net/amm.94-96.1205 ◽

2011 ◽

Vol 94-96 ◽

pp. 1205-1210

Author(s):

Zhao Liu ◽

Jun Hai Zhao

Keyword(s):

Reinforced Concrete ◽

Bearing Capacity ◽

Steel Tube ◽

Ultimate Bearing Capacity ◽

Strength Theory ◽

Principal Stresses ◽

Unified Strength Theory ◽

Short Columns ◽

Circular Steel Tube ◽

Circular Bar

The mechanical behavior and ultimate bearing capacity of the circular bar-reinforced concrete filled steel tube (BRCFST) short columns under axial compression are analyzed in this paper based on the unified strength theory. Considering the restriction effect of steel tube and hoop bar on concrete, the calculation formula of bearing capacity of the column is deduced. Parametric studies are carried out to evaluate the effects of intermediate principal stresses, diameter-thickness ratio of steel tube and the stirrup ratio on the bearing capacity of the column. A good agreement is reached by comparing the results calculated by the formula with the test results. It is concluded that the unified strength theory is applicable in the theoretical analyses of the BRCFST columns.

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A Method for Deformation Analysis of Bar-Reinforced Concrete Filled Steel Tubular Columns under Axial Compression

Advanced Materials Research ◽

10.4028/www.scientific.net/amr.163-167.576 ◽

2010 ◽

Vol 163-167 ◽

pp. 576-581

Author(s):

Jin Sheng Han ◽

Shu Ping Cong

Keyword(s):

Reinforced Concrete ◽

Axial Compression ◽

Deformation Process ◽

Steel Tube ◽

Experimental Results ◽

Lateral Strain ◽

Deformation Analysis ◽

Simple Method ◽

Full Load ◽

Short Columns

Based on experimental researches, a simple numerical analysis method was presented to simulate the full load-deformation process of bar-reinforced concrete filled steel tubular short columns subjected to axial compression. Firstly, the interaction process of steel tube and concrete was analyzed, and then, the simplified constitutive models of steel tube and concrete were established on the base of previous analysis results. Secondly, the relation between lateral and longitudinal strain of steel tube was analyzed based on experimental results, and a simple method was presented to calculate the lateral strain of steel tube. Finally, a program was worked out to simulate the full load-deformation process of bar-reinforced concrete filled steel tubular short columns. The program’s simulation results of both ultimate bearing capacity and load-deformation curves are in good agreement with the experimental results.

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