Pure Shear Capacity Analysis on Square Tube Filled with Steel Reinforced Concrete

2010 ◽  
Vol 163-167 ◽  
pp. 1578-1581
Author(s):  
Yang Wei Ou ◽  
Tong Feng Zhao ◽  
Xiao Dong Zhen
Keyword(s):  
Reinforced Concrete ◽  
Shear Force ◽  
Pure Shear ◽  
Steel Tube ◽  
Shear Capacity ◽  
Capacity Analysis ◽  
Steel Reinforced Concrete ◽  
Limit Value ◽  
Square Steel Tube ◽  
Shear Bending

Square steel tube filled with steel reinforced concrete subjected to shear force was simulated by finite element method. Limit value of broken on pure shear, bending-shear and bending were given. Influence of stirrup ratio, steel reinforced ratio, strength of concrete under shear force was also analyzed. Finally, formula for pure shear capacity of square steel tube filled with steel reinforced concrete was proposed by research the calculated results. Calculated results showed that it agreed well with that of corresponding document.

Flexural Capacity Study on Square Tube Filled with Steel Reinforced Concrete Members

2010 ◽  
Vol 163-167 ◽  
pp. 1574-1577 ◽  
Author(s):  
Tong Feng Zhao ◽  
Hong Nan Li ◽  
Jia Huan Yu
Keyword(s):  
Reinforced Concrete ◽  
Steel Tube ◽  
Flexural Capacity ◽  
Steel Reinforced Concrete ◽  
Deformation Curves ◽  
Concrete Members ◽  
Bending Load ◽  
Square Steel Tube ◽  
Abaqus Software

Moment-deformation curves of square steel tube filled with steel reinforced concrete subjected to bending load were simulated by the ABAQUS software. Calculated and experimental curves agreed well with each other. Through studying further the calculated member, the behavior of materials subjected to moment is given. Finally, flexural capacity formula of square steel tube filled with cross steel reinforced concrete is proposed.

scholarly journals Shear Bearing Capacity of Framework Joints of Steel-Reinforced Concrete-Filled Circular Steel Tube

2020 ◽  
Vol 2020 ◽  
pp. 1-15
Author(s):  
Yongjun Lin ◽  
Kaiqi Liu ◽  
Tianxu Xiao ◽  
Chang Zhou
Keyword(s):  
Reinforced Concrete ◽  
Bearing Capacity ◽  
Plastic Material ◽  
Element Model ◽  
Steel Tube ◽  
Shear Capacity ◽  
Steel Reinforced Concrete ◽  
Shear Mechanism ◽  
Circular Steel Tube ◽  
Shear Bearing Capacity

In this paper, in order to investigate the shear mechanism and shear capacity of framework joints of steel-reinforced concrete-filled circular steel tube (SRCFCST), a numerical finite element model reflecting the mechanical behavior of framework joints of SRCFCST column-reinforced concrete beam is established through simulating concrete by the damage plastic constitutive model and simulating steel by the ideal elastic-plastic material, and its effectiveness is verified by experimental data. On account of uniform distribution of circular steel reinforced around the section and without definite flange and web, the shear mechanism of the framework joints of SRCFCST is analyzed on the basis of equivalent circular steel tube (CST) to the rectangular steel tube. The method for calculating the superposed shear bearing capacities of the joint core area is proposed, which is composed of four parts, i.e., concrete inside tube, concrete outside tube, hooping and steel-reinforced web; and the corresponding formulas for calculating shear bearing capacity are established. The comparative analysis of joints’ shear bearing capacity indicates that the results of numerical simulation and shear bearing capacity formulas coincide well with the experimental values, which can provide reference for the nonlinear analysis and engineering design of similar joints.

Calculation Method on Capacity of Eccentrically Loaded Square Steel Tube Columns Filled with Steel Reinforced Concrete

2011 ◽  
Vol 255-260 ◽  
pp. 457-461 ◽  
Author(s):  
Tong Feng Zhao ◽  
Yang Wei Ou ◽  
Xiao Xuan Sheng
Keyword(s):  
Reinforced Concrete ◽  
Bearing Capacity ◽  
Steel Tube ◽  
Nonlinear Program ◽  
Compression Zone ◽  
Steel Reinforced Concrete ◽  
Calculation Results ◽  
Computation Formula ◽  
Zone Depth ◽  
Square Steel Tube

To study further the bearing capacity of square steel tube columns filled with steel reinforced concrete, several broken modes were divided based on the changing of neutral axial. Bearing capacity computation formula was deduced by stirrup method. Amplified coefficient of eccentricity was regressed based on computed results of nonlinear program, and mid-long columns capacity was deduced. Input the computation formula into Excel, capacity was calculated by exhaustion the compression zone depth of concrete. Calculation results were agreed well with the tested ones.

scholarly journals Bearing Capacity Studies on Square Steel Tube Confined Steel Reinforced Concrete Column under Eccentric Load

2020 ◽  
Vol 2020 ◽  
pp. 1-11
Author(s):  
Tongfeng Zhao
Keyword(s):  
Reinforced Concrete ◽  
Bearing Capacity ◽  
Slenderness Ratio ◽  
Steel Tube ◽  
Concrete Column ◽  
Eccentricity Ratio ◽  
Reinforced Concrete Column ◽  
Eccentric Load ◽  
Steel Reinforced Concrete ◽  
Square Steel Tube

In the present study, an experimental research was conducted on square steel tube confined steel reinforced concrete column under eccentric load. The major parameters of the specimens included slenderness ratio, eccentricity ratio, and structural steel reinforced ratio. According to the tested results, the eccentricity ratio, from 0 to 0.55, significantly affects the structural bearing capacity. The slenderness ratio, from 3 to 8, and steel reinforced ratio, from 0.3 to 0.41, slightly affect the capacity. Furthermore, a numerical analysis program was developed, and the calculated results are well consistent with the experimental results. Also, the theoretical formula for eccentrically loaded columns was proposed based on numerical results.

The Square Steel Tube Columns Filled with Steel-Reinforced Concrete Bias Supporting Capacity Unified Solution

2012 ◽  
Vol 193-194 ◽  
pp. 1418-1423
Author(s):  
Zhi Jie Liu ◽  
Jun Hai Zhao ◽  
Xu Guang Yu ◽  
Gai Qin Su ◽  
Xin Zhao
Keyword(s):  
Reinforced Concrete ◽  
Slenderness Ratio ◽  
Steel Tube ◽  
Reduction Factor ◽  
Calculation Formula ◽  
Strength Theory ◽  
Unified Strength Theory ◽  
Steel Reinforced Concrete ◽  
Circular Steel Tube ◽  
Square Steel Tube

The eccentric ultimate load calculation formula of square steel tube columns filled with steel-reinforced concrete was derived based on the Unified Strength Theory in this paper. The influence of intermediate principal stress and the restriction effect and the decrease of longitudinal stress were considered in the formula. Based on the axial compression load and the effect of consider the eccentricity ratio and slenderness ratio on the hearing capacity was considered, by introducing the reduction factor of concrete strength and the equivalent restriction reduction factor, the confinement of square steel tube towards concrete was equivalent to the confinement of circular steel tube towards it, based on unified strength theory solutions of thick tube, the calculation formula of eccentric compression bearing capacity of square steel tube columns filled with steel-reinforced concrete was deduced and analysed the influence complication. The results indicate unified strength theory has the good applicability and the solution has an important practical value for engineering application.

Finite Element Analysis on Circular Steel Tube Composite Column Filled with Steel Reinforced Concrete

2012 ◽  
Vol 166-169 ◽  
pp. 318-321
Author(s):  
Ya Feng Xu ◽  
Xu Yang ◽  
Xin Wang ◽  
Shou Yan Bai
Keyword(s):  
Finite Element Analysis ◽  
Finite Element ◽  
Reinforced Concrete ◽  
Axial Compression ◽  
Steel Tube ◽  
Element Analysis ◽  
Steel Reinforced Concrete ◽  
Axial Compression Ratio ◽  
Circular Steel Tube ◽  
Deformation Ability

The article analysis the seismic behaviors of circular steel tube composite column filled with steel reinforced concrete by the large finite element analysis software ABAQUS, adopted the load-displacement method and aimed at studying the mechanical properties of circular steel tube composite columns filled with steel reinforced concrete under horizontal low-cyclic loading, considering the degree of ductility, capacity of energy dissipation by the steel ratio and axial compression ratio. Under different axial compression ratios and steel ratios, the hysteresis curves and skeleton curves are carried out. Along with the increase of steel ratio, the deformation ability and ultimate bearing capacity are raised, but with the increase of axial compression ratio, the deformation ability becomes worse.

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