Cross-section strength of concrete-filled HSS columns at simple beam connections

1987 ◽  
Vol 14 (3) ◽  
pp. 408-417 ◽  
Author(s):  
E. Dunberry ◽  
D. Leblanc ◽  
R. G. Redwood
Keyword(s):  
Cross Section ◽  
Axial Load ◽  
Strength Reduction ◽  
Column Length ◽  
Small Reduction ◽  
Total Load ◽  
Steel Columns ◽  
Tubular Columns ◽  
Stub Columns ◽  
Empirical Means

Tests are described in which short, rectangular steel columns filled with concrete are loaded to failure under axial load. Part of the load is applied at typical beam connections within the column length; and part is applied at the top, representing the load from upper stories of a building. The length of the column near the connection over which slip takes place is examined, and the ultimate strength of the columns is compared with that of stub columns loaded uniformly over their length. A small reduction in strength is found to occur, which depends upon the proportion of total load applied at the connection. An empirical means of accounting for this strength reduction is given. Key words: columns, composite construction, connections, tubular columns, axial compression.

08.47: Experimental study of cross-section shape and infill influence on CFST stub columns subjected to axial load

ce/papers ◽  
2017 ◽  
Vol 1 (2-3) ◽  
pp. 2220-2226
Author(s):  
David Hernández-Figueirido ◽  
Carmen Ibañez ◽  
Ana Piquer ◽  
Óscar Martínez-Ramos
Keyword(s):  
Experimental Study ◽  
Cross Section ◽  
Axial Load ◽  
Cross Section Shape ◽  
Section Shape ◽  
Stub Columns

Experimental Investigation of Stiffened Square CFST Columns under Axial Load

2014 ◽  
Vol 919-921 ◽  
pp. 1794-1800
Author(s):  
Xin Zhi Zheng ◽  
Xin Hua Zheng
Keyword(s):  
Experimental Investigation ◽  
Bearing Capacity ◽  
Cross Sections ◽  
Axial Load ◽  
Local Buckling ◽  
Test Results ◽  
Tubular Columns ◽  
Economical Benefit ◽  
Steel Consumption ◽  
Cfst Columns

Abstract: 7 square steel tubular columns were tested to discuss the ultimate axial bearing capacity, ductility performance and the steel consumption under stiffened by steel belts and binding bars of different cross-sections. Test results indicate that only by increasing fewer amounts of steel usage, stiffened square CFST columns with binding bars can not only improve the overall effects of restraint and alleviate regional local buckling between the binding bars, but also improve the bearing capacity of concrete filled square steel tubular columns. The utility benefits and the economical benefit is considerable, deserving extensive use.

scholarly journals Axial Behavior of Concrete-Filled Double-Skin Tubular Stub Columns Incorporating PVC Pipes

Crystals ◽  
2021 ◽  
Vol 11 (12) ◽  
pp. 1434
Author(s):  
Muhammmad Faisal Javed ◽  
Haris Rafiq ◽  
Mohsin Ali Khan ◽  
Fahid Aslam ◽  
Muhammad Ali Musarat ◽  
...  
Keyword(s):  
Steel Tube ◽  
Tube Material ◽  
Steel Tubes ◽  
Tubular Columns ◽  
Axial Capacity ◽  
Double Skin ◽  
Axial Behavior ◽  
Pvc Pipe ◽  
The Cost ◽  
Stub Columns

This experimental study presents concrete-filled double-skin tubular columns and demonstrates their expected advantages. These columns consist of an outer steel tube, an inner steel tube, and concrete sandwiched between two tubes. The influence of the outer-to-inner tube dimension ratio, outer tube to thickness ratio, and type of inner tube material (steel, PVC pipe) on the ultimate axial capacity of concrete-filled double-skin tubular columns is studied. It is found that the yield strength of the inner tube does not significantly affect the ultimate axial capacity of concrete-filled double-skin tubular composites. With the replacement of the inner tube of steel with a PVC pipe, on average, less than 10% strength is reduced, irrespective of size and dimensions of the steel tube. Hence, the cost of a project can be reduced by replacing inner steel tubes with a PVC pipes. Finally, the experimental results are compared with the existing design methods presented in AISC 360-16 (2016), GB51367 (2019), and EC4 (2004). It is found from the comparison that GB51367 (2019) gives better results, followed by AISC (2016) and EC4 (2004).

Experimental research on square steel tubular columns filled with steel-reinforced self-consolidating high-strength concrete under axial load

2010 ◽  
Vol 32 (8) ◽  
pp. 2278-2286 ◽  
Author(s):  
Meichun Zhu ◽  
Jianxin Liu ◽  
Qingxiang Wang ◽  
Xiufeng Feng
Keyword(s):  
Experimental Research ◽  
High Strength Concrete ◽  
Axial Load ◽  
High Strength ◽  
Strength Concrete ◽  
Tubular Columns

Axial load behavior and strength of tubed steel reinforced-concrete (SRC) stub columns

2011 ◽  
Vol 49 (9) ◽  
pp. 1141-1150 ◽  
Author(s):  
Hongtuo Qi ◽  
Lanhui Guo ◽  
Jiepeng Liu ◽  
Dan Gan ◽  
Sumei Zhang
Keyword(s):  
Reinforced Concrete ◽  
Axial Load ◽  
Steel Reinforced Concrete ◽  
Load Behavior ◽  
Stub Columns

scholarly journals Investigation of Parameters Affecting the Equivalent Yield Curvature of Reinforced Concrete Columns

Materials ◽  
2020 ◽  
Vol 13 (7) ◽  
pp. 1594
Author(s):  
Umut Hasgul
Keyword(s):  
Reinforced Concrete ◽  
Cross Section ◽  
Axial Load ◽  
Concrete Columns ◽  
Load Level ◽  
Combined Effects ◽  
Reinforced Concrete Columns ◽  
Independent Effects ◽  
Equivalent Yield ◽  
Section Dimension

In this study, the response quantities affecting the equivalent yield curvature, which is important in the deformation-based seismic design and assessment of structural systems, are investigated for reinforced concrete columns with a square cross-section. In this context, the equivalent yield curvatures were determined by conducting moment–curvature analyses on various column models, in which the axial load level, cross-section dimension, longitudinal reinforcement ratio, and concrete compression strength were changed parametrically, and the independent and/or combined effects of the relevant parameters were discussed. Depending on the axial load levels of P/Agfc′ < 0.3, P/Agfc′ = 0.3, and P/Agfc′ > 0.3 for the considered columns, the yielding of reinforcement, yielding of reinforcement and/or concrete crushing, and concrete crushing governed the yield conditions, respectively. It can be noted that the cross-section dimension and axial load level became the primary parameters. Even though the independent effects with regard to particular parameters remained at minimal levels, the combined effects of them with the axial load became important in terms of the equivalent yield curvature.

Investigate on Axial Load Behaviors of T-Shaped CFT Stub Columns with Binding Bars

2014 ◽  
Vol 501-504 ◽  
pp. 510-513
Author(s):  
Xin Zhi Zheng ◽  
Xin Hua Zheng
Keyword(s):  
Experimental Data ◽  
Bearing Capacity ◽  
Ultimate Strength ◽  
Failure Mode ◽  
Axial Compression ◽  
Axial Load ◽  
Constitutive Relationship ◽  
Relationship Of ◽  
Stub Columns

. Abstract. Tests on TCFT-WB, including 11 specimens with binding bars and 5 without binding bars under axial compression were carried out. The effects of parameters on the behavior of specimens such as failure mode, bearing capacity and ductility are analyzed to provide experimental data for the following research. The formula to calculate ultimate strength of TCFT-WB columns under axial compression are deduced from the constitutive relationship of TCFT-WB. The calculated results are compared with those calculated by FEM analyses, showing the proposed formula can give reasonable predictions on the ultimate strength of TCFT-WB stub columns under axial compression.

Effects of sustained axial load and cooling phase on post-fire behaviour of reinforced concrete stub columns

2013 ◽  
Vol 59 ◽  
pp. 76-87 ◽  
Author(s):  
Jingsi Huo ◽  
Jiaguang Zhang ◽  
Zhiwei Wang ◽  
Yan Xiao
Keyword(s):  
Reinforced Concrete ◽  
Axial Load ◽  
Fire Behaviour ◽  
Cooling Phase ◽  
Stub Columns
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