Bearing capacity of Steel Tubular columns filled with Steel-Reinforced High-strength Concrete subjected to eccentric compression

2015 ◽  
pp. 2221-2225
Author(s):  
Ping Guan ◽  
Lanxiang Chen
Keyword(s):  
Bearing Capacity ◽  
High Strength Concrete ◽  
High Strength ◽  
Strength Concrete ◽  
Tubular Columns ◽  
Eccentric Compression

Bending Bearing Capacity of Steel Tubular Columns Filled with Steel-Reinforced High-Strength Concrete

2015 ◽  
Vol 1089 ◽  
pp. 219-222
Author(s):  
Ping Guan ◽  
Lan Xiang Chen
Keyword(s):  
Stress Distribution ◽  
Bearing Capacity ◽  
High Strength Concrete ◽  
High Strength ◽  
Distribution Method ◽  
Strength Concrete ◽  
Tubular Columns ◽  
Bending Resistance ◽  
Section Form ◽  
Plastic Stress

Steel tubular column filled with steel-reinforced high-strength concrete (STSRHC) has higher bearing capacity and seismic performance, so STSRHC has a good application prospect in Engineering. So far, it is in the stage of research. To calculate the bending bearing capacity of steel tubular column filled with steel-reinforced high-strength concrete (STSRC), the bending resistance of STSRHC is predicted by the method of plastic stress distribution, and the formula of bending bearing capacity is successfully established. The results show that the calculated results based on the plastic stress distribution method and the experimental ones are in agreement well, and the formula can be used into columns that have different section form of inserted steel. The conclusions have a guiding significance on improving other performances of STSRHC.

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.

scholarly journals Steel Plate Cold-Rolled Section Steel Embedded High-Strength Concrete Low-Rise Shear Wall Seismic Performance

2018 ◽  
Vol 2018 ◽  
pp. 1-18
Author(s):  
Min Gan ◽  
Yu Yu ◽  
Liren Li ◽  
Xisheng Lu
Keyword(s):  
Bearing Capacity ◽  
Failure Mode ◽  
Seismic Performance ◽  
High Strength Concrete ◽  
Steel Plate ◽  
Shear Walls ◽  
High Strength ◽  
Shear Wall ◽  
Steel Plates ◽  
Strength Concrete

Four test pieces with different steel plate center-to-center distances and reinforcement ratios are subjected to low-cycle repeat quasistatic loading to optimize properties as failure mode, hysteretic curve, skeleton curve, energy dissipation parameters, strength parameters, and seismic performance of high-strength concrete low-rise shear walls. The embedded steel plates are shown to effectively restrict wall crack propagation, enhance the overall steel ratio, and improve the failure mode of the wall while reducing the degree of brittle failure. Under the same conditions, increasing the spacing between the steel plates in the steel plate concrete shear wall can effectively preserve the horizontal bearing capacity of the shear wall under an ultimate load. The embedded steel plates perform better than concealed bracing in delaying stiffness degeneration in the low-rise shear walls, thus safeguarding their long-term bearing capacity. The results presented here may provide a workable basis for shear wall design optimization.

08.05: Design of high strength concrete filled tubular columns

ce/papers ◽  
2017 ◽  
Vol 1 (2-3) ◽  
pp. 1869-1878
Author(s):  
J Y Richard Liew ◽  
Mingxiang Xiong ◽  
Yan-Bo Wang
Keyword(s):  
High Strength Concrete ◽  
High Strength ◽  
Strength Concrete ◽  
Tubular Columns

Loading Process Simulation of GFRP Tube Filled with Steel-Reinforced High-Strength Concrete Columns Subjected to Eccentric Compression

2011 ◽  
Vol 71-78 ◽  
pp. 4203-4206
Author(s):  
Le Zhou ◽  
Hong Tao Liu
Keyword(s):  
High Strength Concrete ◽  
Slenderness Ratio ◽  
Concrete Strength ◽  
High Strength ◽  
Concrete Columns ◽  
Composite Columns ◽  
Strength Concrete ◽  
Finite Strip Method ◽  
Eccentric Compression ◽  
High Strength Concrete Columns

For the further study of bearing compressive capacity of GFRP tube filled with SHC（steel-reinforced high-strength concrete）columns subjected to eccentric compression, and analysis its whole bearing compressive process under eccentric compression. Based on the flat section assumption finite strip method, the calculating program of bearing eccentric compressive capacity of GFRP tube filled with SHC columns is proposed according to existing retrofit theory and related technical procedures. The relation curves of load-deformation is gotten using this calculating program, at the same time it can get the effect curves of concrete strength, slenderness ratio, eccentricity and containing bone rate to load-deformation. Calculations show that the ultimate bearing compressive capacity of composite column decreases with the increase of slenderness ratio, and elastic stage of component curve gradually shortens and stiffness gradually loses; The ultimate bearing compressive capacity of composite columns decreases with the increase of eccentricity; component ductility improves; the ultimate bearing compressive capacity of composite columns increases with the increase of concrete strength. The calculated results agree well with the experimental results and this study provides a basis for practical design.

scholarly journals THEORETICAL MODEL FOR DOUBLE-SKINNED CONCRETE-FILLEDSTEEL-TUBULAR COLUMNS WITH EXTERNAL CONFINEMENT

2015 ◽  
Vol 21 (5) ◽  
pp. 666-676 ◽  
Author(s):  
Chun Xiao Dong ◽  
Johnny Ching Ming Ho
Keyword(s):  
Theoretical Model ◽  
High Strength Concrete ◽  
High Strength ◽  
Imperfect Interface ◽  
Steel Tube ◽  
Interface Bonding ◽  
Strength Concrete ◽  
Tubular Columns ◽  
Strength And Stiffness ◽  
Transverse Steel

Recent advances in the production of super-fine cement and filler technology has made the production of high-strength concrete (HSC) of 120 MPa practicable in the industry. Nonetheless, the application of such HSC in real construction is still limited. One of the reasons that inhibits the use of HSC is the brittleness, which causes HSC structures to fail explosively if the concrete confinement is not adequate. The traditional method of installing transverse steel as confinement is not feasible in HSC structures, as the steel will be too congested to ensure proper concrete placing. To overcome the problem, double-skinned high-strength concrete-filled-steel-tubular (HSCFST) columns has been advocated, which could provide large, continuous and uniform confinement to HSC. However, a major shortcoming of the double-skinned HSCFST columns is the imperfect interface bonding that occurs at the elastic stage that reduces the elastic strength and stiffness of columns. To improve the situation, the authors have verified previously that using external steel rings on the outer steel tube can successfully restrict the dilation of HSCFST columns and thus restore an intact interface bonding condition. As a continued study, the authors will in this paper develop a theoretical model for predicting the uni-axial load-carrying capacity of doubled-skinned HSCFST columns.

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