Post-fire behaviour and capacity of high strength concrete-filled high strength steel tube (HCFHST) stub columns under combined compression and bending

2022 ◽  
Vol 253 ◽  
pp. 113837
Author(s):  
Yukai Zhong ◽  
Ke Jiang ◽  
Ou Zhao
Keyword(s):  
High Strength Steel ◽  
High Strength Concrete ◽  
High Strength ◽  
Steel Tube ◽  
Fire Behaviour ◽  
Strength Concrete ◽  
Stub Columns

Behaviour of Concrete Filled Steel Square-Tube Stub Column with Steel-Fiber Reinforced High Strength Concrete

2013 ◽  
Vol 663 ◽  
pp. 125-129 ◽  
Author(s):  
Chang Sik Choi ◽  
Hyung Suk Jung ◽  
Hyun Ki Choi
Keyword(s):  
High Strength Concrete ◽  
Steel Fiber ◽  
Load Capacity ◽  
Compressive Load ◽  
High Strength ◽  
Steel Tube ◽  
Fiber Reinforced Concrete ◽  
Fiber Reinforced ◽  
Strength Concrete ◽  
Stub Columns

The paper presents an experimental study on the behavior of axial loaded concrete-filled steel square-tube stub columns with high strength fiber reinforced concrete until failure. Four specimens were tested to investigate the effect of high strength concrete on the load carrying capacity of the concrete-filled steel square-tube stub columns. The effect of the presence of steel fiber in high strength concrete which filled in the steel tube was also investigated. The main parameters in the tests were: (1) the strength of concrete (30 Mpa and 100 Mpa), and (2) the use of reinforcing steel fiber in concrete (plain high strength concrete and steel fiber high strength concrete). The main purpose of these tests were three-step: (1) to describe a series of tests on composite stub columns, (2) to analyze the influence of several parameters, and (3) to compare the accuracy of the predictions by using the specifications in the code (ACI and EC4 etc.) for the design of high-strength composite columns. Experimental results indicate that the high strength of concrete and use of steel-fiber in concrete had significant influence on both the axial compressive load capacity and the ductile of the steel square-tube stub columns.

Finite Element Simulation on Behavior of the High-Strength Concrete Filled High-Strength Square Steel Tube Middle-Long Columns under Axial Compressive Load

2014 ◽  
Vol 578-579 ◽  
pp. 340-345
Author(s):  
Guo Chang Li ◽  
Bo Wen Zhu ◽  
Yu Liu
Keyword(s):  
Bearing Capacity ◽  
High Strength Concrete ◽  
Slenderness Ratio ◽  
High Strength ◽  
Steel Tube ◽  
New Combination ◽  
Length Variation ◽  
Compression Process ◽  
Strength Concrete ◽  
Square Steel Tube

In this paper, using ABAQUS, 16 high-strength concrete filled high-strength square steel tube middle-long columns’ axial compression process were simulated. The load-deflection relationships were obtained and the new combination in improving the bearing capacity and plastic deformation has a great advantage. Realization of length variation slenderness ratio by changing the length of column, this paper also study the influence of slenderness ratio, the main parameters of the high-strength concrete filled high-strength square steel tube middle-long column. It is found that both bearing capacity and the plastic capacity are associated with slenderness ratio.

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