Bearing Capacity Analysis of the Cross-Section Steel Reinforced Concrete Column in Different Parameters

2013 ◽  
Vol 438-439 ◽  
pp. 526-529
Author(s):  
Ri Liang Li ◽  
Ya Feng Xu ◽  
Shou Yan Bai
Keyword(s):  
Reinforced Concrete ◽  
Bearing Capacity ◽  
Axial Compression ◽  
Compression Ratio ◽  
Large Scale ◽  
Displacement Curve ◽  
Reinforced Concrete Column ◽  
Steel Reinforced Concrete ◽  
Axial Compression Ratio ◽  
The Cross

This paper uses the large-scale finite element analysis software ABAQUS to simulate 12 cross steel reinforced concrete special-shaped columns with the control variables of axial compression ratio and rate of steel bone, and subjected to the monotonic load with 20mm horizontal displacement. 6 columns work under the different axial compression ratio of 0.0, 0.4, 0.5, 0.6, 0.7 and 0.8. Other 6 columns are made of different rates of steel bone with different steel bone thickness of 0mm, 2mm, 4mm and 6mm, 8mm and 10mm, and subject to vertical axial force in axial compression ratio of 0.3. By simulating, we obtain the load - displacement curve of different axial compression ratios and different rates of steel bone, and analyze the effect of the bearing capacity of the cross steel reinforced concrete special-shaped columns in different parameters. The results show that the bearing capacities of the columns decrease with the increasing ratio of axial compression, and increase with the increasing rate of steel bone.

Study on the Bearing Capacity and Ductility of Steel Reinforced Concrete Cross-Shaped Columns

2011 ◽  
Vol 243-249 ◽  
pp. 15-19 ◽  
Author(s):  
Zhe Li ◽  
Shao Ji Chen ◽  
Jing Xu ◽  
Ye Ni Wang ◽  
Cui Ping Zhang
Keyword(s):  
Reinforced Concrete ◽  
Bearing Capacity ◽  
Axial Compression ◽  
Cross Section ◽  
Compression Ratio ◽  
Computer Data ◽  
Steel Reinforced Concrete ◽  
Axial Compression Ratio ◽  
Eccentric Compression ◽  
Curvature Ductility

Compared with reinforced concrete shaped columns, bearing capacity and ductility of steel reinforced concrete shaped columns are significantly improved, so it is with theoretical significance and practical application of value to research. Based on the plain cross section presume, with material cross-section boundary calculation unit, 15 steel reinforced concrete cross-shaped columns(SRCCSC) have made nonlinear full-rang numerical analysis. It demonstrates that the most adverse curvature ductility load angle of SRCCRSC is 45°.Loading angle (), axial compression ratio (n), and the ratio of spacing and diameter of longitudinal reinforcements (s/d) are the principal factors in curvature ductility of SRCCSC subjected to biaxial eccentric compression. Under the most unfavorable loading angle, through a regression analysis of curvature ductility computer data of 150 cross-shaped columns with 8mm stirrups diameter and 150 columns with 10mm stirrups diameter, it can be obtained with the relationship betweenand axial compression ration,s/d, of SRCCSC subjected to biaxial eccentric compression.

Analysis on Axial Compression Bearing Capacity of Steel Reinforced Concrete Sandwich Node

2014 ◽  
Vol 501-504 ◽  
pp. 685-689
Author(s):  
Liang Li Xiao ◽  
Xiao Yu ◽  
Jian Wei Han
Keyword(s):  
Reinforced Concrete ◽  
Bearing Capacity ◽  
Axial Compression ◽  
Compression Ratio ◽  
Concrete Strength ◽  
Technical Specification ◽  
Limit Values ◽  
Steel Reinforced Concrete ◽  
Axial Compression Ratio ◽  
Joint Construction

According to the limit values of axial compression ratio of steel reinforced concrete given by technical specification for steel reinforced concrete composite structure (JGJ138-2001), the axial force of steel reinforced concrete sandwich nodes calculated by MIDAS and the axial bearing capacity calculated by limit values of axial compression ratio are compared with an actual project. The results show that steel concrete columns with designed strength of C60, the strength more than of column concrete strength higher than C50 is the least requirement as to meet the axial compression ratio. The result provides a theoretical basis for the future of safety work and the sandwich joint construction.

On the Stress-Strain of Steel Tube Column Filled with Steel-Reinforced Concrete Subject to Compression-Flexure Loading

2011 ◽  
Vol 71-78 ◽  
pp. 3855-3860
Author(s):  
Xiao Liu ◽  
Min Li
Keyword(s):  
Reinforced Concrete ◽  
Bearing Capacity ◽  
Axial Compression ◽  
Compression Ratio ◽  
Limit Equilibrium ◽  
Steel Tube ◽  
Stress Strain ◽  
Peak Displacement ◽  
Steel Reinforced Concrete ◽  
Axial Compression Ratio

In order to study the bearing capacity and section stress-strain distribute on the steel tube filled with steel-reinforced concrete (STSRC) compression-flexure column, four compression-flexure members of STSRC were tested and theoretical researched. The major parameters of the test were axial compression ratio (n=0.5~0.85). The result of the study showed that: load-deformation() typical curve includes three stages, elastic characteristic, elastic-plastic characteristic, and disruption; Along with the increase of axial compression ratio, the bearing capacity and ductility reduced, but the peak displacement had not change enough; The composite column conformed to plane section, and the larger the axial compression ratio, the further distance of neutral axis of section to the centric axis and closer to the tensile region. ; During the loading process, the steel skeleton in compressive zone yield, but in tensile region never yielded. According to the test results and the limit equilibrium method, the formula for calculating the compression-flexure member of STSRC was established. A good agreement between the calculation results and testing results illustrates, which is feasible to using the calculating formula to calculate the bearing capacity of STSRC.

scholarly journals Experimental Study and Damage Model on the Seismic Behavior of Reinforced Concrete L-Shaped Columns under Combined Torsion

2020 ◽  
Vol 10 (19) ◽  
pp. 7008
Author(s):  
Deyi Xu ◽  
Yang Yang ◽  
Zongping Chen
Keyword(s):  
Reinforced Concrete ◽  
Bearing Capacity ◽  
Axial Compression ◽  
Compression Ratio ◽  
Failure Modes ◽  
Shear Failure ◽  
Plastic Hinge ◽  
Combined Loading ◽  
Equivalent Viscous Damping ◽  
Axial Compression Ratio

Due to the advantage of saving indoor space, a special-shaped column frame attracted more attention of the engineers and researchers. This paper presented a quasi-static cyclic loading experiment of six specimens of reinforced concrete (RC) L-shaped columns under compression-flexure-shear-torsion combined loadings to investigate the effect in the ratio of torsion to moment (T/M) and axial compression ratio (n) on their seismic performance. The results showed that the failure modes of L-shaped specimens included bending failure, bending-torsion failure, and torsion-shear failure with the hysteretic curves exhibiting S shape. With the increase of T/M ratio, cracks on the flange developed more fully, and the height of plastic hinge decreased and torsion bearing capacity improved. Besides, as the T/M ratio increased the twist ductility increased, while displacement ductility decreased. On the other hand, with a higher axial compression ratio, torsion bearing capacity and bending stiffness were both increased. Moreover, the equivalent viscous damping coefficient of bending and torsion were 0.08~0.28 and 0.13~0.23, respectively. The average inter-story drift ratio met the requirements of the Chinese standard. Finally, two modified models were proposed to predict the progression of damage for the L-shaped column under combined loading including torsion.

Seismic Behavior Analysis on Reinforced Concrete Core Walls Based on Fiber Model

2010 ◽  
Vol 163-167 ◽  
pp. 1068-1073 ◽  
Author(s):  
Wei Hou ◽  
Qing Xuan Shi ◽  
Zhi Lin Ma
Keyword(s):  
Reinforced Concrete ◽  
Bearing Capacity ◽  
Axial Compression ◽  
Compression Ratio ◽  
Nonlinear Behavior ◽  
Width Ratio ◽  
Inelastic Behavior ◽  
Concrete Core ◽  
Fiber Model ◽  
Axial Compression Ratio

Reinforced concrete core walls with good anti-side rigidity and spatial rigidity is used widely in high-rise buildings. Elasto-plastic static analysis of core walls are be realized by the program CANNY based on the theory of fiber model. Compared with the tests, Results from the simulation anlysis match well with those from the tests. The influence of axial compression ratio and height-width ratio on the bearing capacity and deformation of core walls are analyzed systemically. It is shown that the fiber model is available and successful for the numerical simulation of core walls. The axial compression ratio has distinct affect on the elastic and inelastic behavior of RC core walls. The ratio of height to width not only has effect on the bearing capacity and deformation performance, but also changes the failure mode of RC core walls. The numerical results confirmed the accuracy of this analysis procedure in representing the nonlinear behavior of core walls.

Experimental Research and Calculation Analysis on Shear Crack Load of Steel Reinforced Concrete T-Shaped Columns

2012 ◽  
Vol 166-169 ◽  
pp. 154-158
Author(s):  
Jun Tao Li ◽  
Xiang Gang Zhang ◽  
Zopng Ping Chen
Keyword(s):  
Reinforced Concrete ◽  
Axial Compression ◽  
Compression Ratio ◽  
Shear Crack ◽  
Load Test ◽  
Steel Reinforced Concrete ◽  
Shear Span ◽  
Axial Compression Ratio ◽  
Shear Cracking ◽  
Calculation Analysis

Based on the experiment of 8 steel reinforced concrete T-shaped columns specimens under monotonic static shear load, test value of shear crack load were obtained. Influence on shear crack load because of the shear span ratio, axial compression ratio and stirrup ratio was analyzed, the added coefficient θ of flange and α of steel were introduced. The calculation formula for shear cracking load was given. It is shown that shear cracking load reduces as the shear span ratio and increases with the axial compression ratio increases within a certain range, shear cracking load increases with stirrup ratio increasing, the calculated value of shear cracking load is in good agreement with the experimental data.

The Hysteretic Property Study of Cross Steel Reinforced Concrete Special-Shaped Column in Different Axial Compression Ratios

2013 ◽  
Vol 351-352 ◽  
pp. 671-674
Author(s):  
Ya Feng Xu ◽  
Ri Liang Li ◽  
Shou Yan Bai
Keyword(s):  
Reinforced Concrete ◽  
Axial Compression ◽  
Compression Ratio ◽  
Analysis Software ◽  
Element Analysis ◽  
Skeleton Curve ◽  
Steel Reinforced Concrete ◽  
Axial Compression Ratio ◽  
Hysteretic Property ◽  
The Finite Element Analysis

In this paper, the finite element analysis software ABAQUS is used to study the hysteretic property of cross steel reinforced concrete special-shaped column in different axial compression ratios. In the same condition, we can get the deformation diagram of cross steel reinforced concrete special-shaped column which the axial compressive ratio is 0.0, 0.4, 0.5, 0.6, 0.7 and 0.8 by changing the axial load of the column, then extract the hysteretic curve and skeleton curve. By contrast, it can be seen that the hysteretic property of column reduce with the increasing of axial compression ratio, and the ultimate bearing capacity of column also reduce with the increasing of axial compression ratio.

Discussion on Limit Values of Axial Compression Ratio of Steel Reinforced Concrete Columns

2014 ◽  
Vol 578-579 ◽  
pp. 37-40 ◽  
Author(s):  
Yun Yun Li ◽  
Bao Sheng Yang
Keyword(s):  
Reinforced Concrete ◽  
Axial Compression ◽  
Compression Ratio ◽  
Experimental Test ◽  
Concrete Columns ◽  
Reinforced Concrete Columns ◽  
Limit Values ◽  
Displacement Ductility ◽  
Steel Reinforced Concrete ◽  
Axial Compression Ratio

Through the experimental test, influences of axial compression ratio on seismic ductility of SRC columns are analyzed. The limit values of axial compression ratio of the columns are obtained, corresponding to different stirrup ratios at a certain level of displacement ductility.

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