Research on Mechanical Properties of Separation Concrete-Filled Steel Tubes Subjected to Eccentric Compression on Non-Separation Side

2011 ◽  
Vol 117-119 ◽  
pp. 887-892 ◽  
Author(s):  
Xia Ping Liu ◽  
Zhuo Sun ◽  
Hai Yun Huang ◽  
Shu Tang ◽  
Chun Hui Tang
Keyword(s):  
Mechanical Properties ◽  
Load Capacity ◽  
Eccentricity Ratio ◽  
Steel Tubes ◽  
Ultimate Load Capacity ◽  
Whole Process ◽  
Short Columns ◽  
Separation Ratio ◽  
Eccentric Compression ◽  
Concrete Filled Steel Tubes

This document deals with the whole process compression model test on 12 short columns of separation concrete-filled steel tubes (CFST) which are subjected to eccentric compression on the non-separation side. The experimental parameters include the separation ratio and the eccentricity ratio. The results show that the separation ratio and the eccentricity ratio will influence CFST components’ mechanical properties which contain the relationship of load-strain amd load-deformation, that especially embodied in the nonlinear stage. When compressed on non-separation side, the confinement of steel tubes to core concrete will be continuously weakened and the ultimate load capacity of the components will be decreased obviously with both the separation ratio and the eccentricity ratio increasing gradually. But it less serious which compare with that compressed on separation side.

Research on the Load Capacity of Separation Concrete-Filled Steel Tubes Subjected to Eccentric Compression on Separation Side

2010 ◽  
Vol 168-170 ◽  
pp. 632-636 ◽  
Author(s):  
Xia Ping Liu ◽  
Shu Tang ◽  
Chun Hui Tang ◽  
Zuo Yong Yang ◽  
Zuo Sun
Keyword(s):  
Ultimate Load ◽  
Load Capacity ◽  
Eccentricity Ratio ◽  
Steel Tubes ◽  
Ultimate Load Capacity ◽  
Short Columns ◽  
Separation Ratio ◽  
Eccentric Compression ◽  
Experimental Parameters ◽  
Concrete Filled Steel Tubes

This paper deals with the ultimate load capacity test on 14 short columns of separation concrete-filled steel tubes (CFST) which are subjected to the eccentric compression on separate side. The experimental parameters include the separation ratio and the eccentricity ratio. The result shows that the separation ratio and the eccentricity ratio will influence the load capacity of the components of the concrete-filled steel tubes which are subjected to the eccentric compression. The confinement of steel tubes to core concrete will be continuously weakened and the ultimate load capacity of the components will be decreased obviously with both the separation ratio and the eccentricity ratio increasing gradually.

NUMERICAL EVALUATION OF CONCRETE FILLED STAINLESS STEEL TUBE FOR SHORT COLUMNS SUBJECTED TO AXIAL COMPRESSION LOAD

2018 ◽  
Vol 80 (2) ◽  
Author(s):  
Azrul Abd Mutalib ◽  
Mohamed Hamza Mussa ◽  
Khaleel Mohammad Khaleel Abusal
Keyword(s):  
Stainless Steel ◽  
Ultimate Strength ◽  
Ultimate Load ◽  
Load Capacity ◽  
Concrete Strength ◽  
Steel Tube ◽  
Stainless Steel Tube ◽  
Steel Tubes ◽  
Ultimate Load Capacity ◽  
Short Columns

Recently, the concrete filled stainless steel tubes (CFSST) columns are widely applied in modern construction due to its aesthetic appearance, high corrosion resistant and less construction cost. The current study aims to evaluate the behavior of CFSST column with square hollow section (SHS) numerically under axial compressive load by using ABAQUS software. A good consistency had achieved between the numerical and experimental test results in terms of load-displacement behaviour and ultimate strength with a maximum difference equal to 2%. Intensive parametric studies had been conducted to determine the effects of stainless steel tubes and concrete properties on the ultimate load capacity of CFSST column. The results proved that the stainless steel tube thickness (t) capable to increase the strength of column by143.59% at t = 10 mm as compared with t = 2 mm, whereas a slight effect had observed for the variation of stainless steel proof stress ( ). On the other hand, the higher values of concrete strength (fc′) obviously reduced the lateral expansion of CFSST column at initial load and led to increase the ultimate load capacity by 34.18 % at fc′ = 80 MPa as compared with  fc′ = 30 MPa. Furthermore, the design strengths calculated according to the Eurocode 4 for concrete filled steel tube (CFST) column appeared a good agreement with the numerical results within an average difference value 2.49%, hence, it could consider as the most rational design method to determine the ultimate strength of CFSST column.

Research of Post-Fire Mechanical Property of Steel Fiber Reinforced Ceramsite Concrete Filled Steel Tubes after Exposure to Fire

2013 ◽  
Vol 790 ◽  
pp. 181-184
Author(s):  
Hai Lun Tong ◽  
Tian Hong Wang ◽  
Jian Qi Lu ◽  
Xin Tang Wang
Keyword(s):  
Bearing Capacity ◽  
Steel Fiber ◽  
Fiber Reinforced ◽  
Fire Load ◽  
Furnace Temperature ◽  
Steel Tubes ◽  
Compression Performance ◽  
Short Columns ◽  
Maximum Value ◽  
Concrete Filled Steel Tubes

The post-fire axial compressive behavior of a set of steel fiber reinforced ceramsite concrete filled steel tubular short columns (noted as SFCC-SSC) was experimentally studied. Effect of the maximum value of fire response temperatures of the specimens and some parameters on the axial compression performance of the specimens was especially discussed. The results show that the surface of the steel tubes after fire presented dark red for 700°Cof furnace temperature and orange red for 900°C, and there was no obvious descending segment in post-fire load-displacement curves of the most specimens subjected to fire load. It was concluded that the axial bearing capacity of the specimens aftersuffering the furnace temperature of 900°C is much less than that of the specimens not subjected to fire load, and the volume of steel fiber of 0.5% of has the greatest effect on post-fire bearing capacity of specimens of SFCC-SSC.

Ultimate Bearing Capacity of Composition Columns Reinforced with the Prefabricated SHSCUS Filled with Steel Tubes Subjected to Axial Load

2011 ◽  
Vol 368-373 ◽  
pp. 225-229
Author(s):  
Guo Can Chen ◽  
Zhi Sheng Xu ◽  
Zhi Shuo Yang
Keyword(s):  
Bearing Capacity ◽  
Load Capacity ◽  
High Strength ◽  
Ultimate Bearing Capacity ◽  
Concrete Cover ◽  
Design Rule ◽  
Superposition Method ◽  
Steel Tubes ◽  
Ultimate Load Capacity ◽  
Concrete Type

This paper presents an experimental investigation on the short composition columns reinforced with the prefabricated super high strength concrete used stone-chop(abbreviated to SHSCUS) filled with steel tubes with 1RC as reference. The experimental parameters were the concrete type inner steel tubes, and L/D ratio, steel ratio and so on. The performance of the composition columns was investigated using different diameter-to-thickness ratio of steel tubes ranging from 15 to 26.6, and different cubic strength of 126.7, 120.3, 122.4, 134.4, 125.4, 111.4, 108.6MPa of infill concrete. The experimental results showed that concrete cover falling off was prior to specimens failure, and that the design rule, as specified in current code suitable for HSC overestimate the ultimate bearing capacity, were not suitable for the case with SHSCUS. Then the hypothesis was put forward based on experimental phenomena observed, and the formula of its ultimate load capacity was suggested based on superposition method, by which the predicted values have a good coincidence with those from the experiments.

Experimental Research on Four-Tube Concrete-Filled Steel Tubular Laced Columns

2011 ◽  
Vol 311-313 ◽  
pp. 2204-2207 ◽  
Author(s):  
Bo Wang Chen ◽  
Ran He ◽  
Jian Guo Tan ◽  
Yang Oyang
Keyword(s):  
Mechanical Properties ◽  
Yield Point ◽  
Experimental Research ◽  
Failure Modes ◽  
Shear Failure ◽  
Short Columns ◽  
Eccentric Compression ◽  
Bending Failure ◽  
Overall Bending ◽  
Compressive Tests

By means of axial compressive and eccentric compressive tests of four Four-tube Concrete-filled Steel Tubular Laced Columns, to research the mechanical properties and failure modes of this structural without yield point. Research shows that, the failure modes of this model, as well as axial compressive short columns, have the same trend of oblique shear failure, and presenting overall bending failure under eccentric compression. The linear eccentricity takes a biggish influence on mechanical properties of laced columns.

Experimental Study of Performance of Self-Stress Lightweight Aggregate Concrete Filled Steel Tubes after Exposure to Fire

2013 ◽  
Vol 790 ◽  
pp. 173-176
Author(s):  
Jin Can Xu ◽  
Peng Fei Ren ◽  
Hai Lun Tong ◽  
Xin Tang Wang
Keyword(s):  
Bearing Capacity ◽  
Fire Behavior ◽  
Lightweight Aggregate ◽  
Lightweight Aggregate Concrete ◽  
Fire Load ◽  
Steel Tubes ◽  
Aggregate Concrete ◽  
Expansive Agent ◽  
Short Columns ◽  
Concrete Filled Steel Tubes

The post-fire behavior of a set of self-stress lightweight aggregate concrete filled steel tubular short columns (noted as SSLC-SSC) after exposure to fire was experimentally studied. Effect of the maximum value of fire response temperatures of the tubes and their geometric parameters on the strength and the other mechanical property of the specimens were especially discussed. The experimental results show that the specimens of SSLC-SSC have higher post-fire bearing capacity and better plastic deformation, there was no obvious descent segment in post-fire load-displacement curves of the most specimens subjected to fire load. It was concluded that the maximum response temperature of specimens has great effect on the post-fire bearing capacity of self-stress concrete-filled steel tubes subjected to fire load, and the value of self-stress corresponding to 10% of dosage of expansive agent has the greatest effect on post-fire bearing capacity of specimens of SSLC-SSC.

Study of Post-Fire Axial Compressive Behavior of Self-Stress Ceramsite Concrete Filled Steel Tubular Short Columns

2013 ◽  
Vol 790 ◽  
pp. 185-188
Author(s):  
Jian Qi Lu ◽  
Hai Lun Tong ◽  
Jin Can Xu ◽  
Xin Tang Wang
Keyword(s):  
Longitudinal Strain ◽  
Circumferential Strain ◽  
Local Buckling ◽  
Lightweight Aggregate ◽  
Lightweight Aggregate Concrete ◽  
Compressive Behavior ◽  
Steel Tubes ◽  
Aggregate Concrete ◽  
Short Columns ◽  
Concrete Filled Steel Tubes

The post-fire axial compressive behavior of a set of self-stress lightweight aggregate concrete filled steel tubes (noted as SSLC-ST) after exposure to fire was studied. Effect of the fire temperatures of the specimens and some parameters on the axial compressive behavior of the specimens was especially discussed. The results show that the initial circumferential strain of surface of the steel tubes is much larger than the longitudinal strain of the steel tubes, and the specimens of SSLC-ST have higher post-fire axial compression bearing capacity and better plastic deformation. It was concluded that the local buckling and overall failure of the specimens take place in succession while the specimens are axially loaded, and there are a lot of slip lines with angle of 45oon surface of the steel tubes.

Sign in / Sign up

Export Citation Format

Share Document