The Analysis of Influencing Factors of Multi-Ribbed Composite Wall’s Skeleton Curve

2011 ◽  
Vol 250-253 ◽  
pp. 3355-3360
Author(s):  
Peng Chang ◽  
Hang Zeng
Keyword(s):  
Axial Compression ◽  
Compression Ratio ◽  
Linear Regression Analysis ◽  
Limit Load ◽  
Element Model ◽  
Multiple Linear Regression Analysis ◽  
Skeleton Curve ◽  
Shear Span ◽  
Axial Compression Ratio ◽  
Composite Wall

Based on the numerical simulation of the basic behavior of multi-ribbed composite wall under low frequency cyclic load, the skeleton curve is consistent with the experimental results. Also, the factors such as axial compression ratio, the intensity of filling blocks and the shear span ratio which may influence the shape of the skeleton curves are analyzed. The results shows that the yield load of multi-ribbed composite wall as well as the limit load are positively related to the block strength, while are negatively related to shear span ratio. Besides, by the method of finite element model, 9 groups of skeleton curve data of multi-ribbed composite wall in different axial compression ratio, shear span ratio and the intensity of filling blocks were simulated. On the basis of multiple linear regression analysis of the numerical results, the equations for calculating the feature points in the skeleton curve are given.

Finite Element Analysis on Different Axial Compression Ratio of Composite CFST Column and Steel Beam Connection

2014 ◽  
Vol 578-579 ◽  
pp. 278-281
Author(s):  
Pi Yuan Xu ◽  
Qian Chen ◽  
Ya Feng Xu
Keyword(s):  
Finite Element Analysis ◽  
Finite Element ◽  
Bearing Capacity ◽  
Axial Compression ◽  
Compression Ratio ◽  
Element Model ◽  
Element Analysis ◽  
Finite Element Software ◽  
Axial Compression Ratio ◽  
Modeling Process

In this paper, in order to understand fully the development of failure mechanism, bearing capacity and seismic performance of the steel H-beams and composite concrete filled steel tubular (CFST) column joints strengthened by outside strengthening ring, in the space zone the effects of changing the axial compression ratio is investigated. A 3D joint finite element model is built up by finite element software ABAQUS, the elastic-plastic finite element analysis is carried through numerical modeling process. The analysis results showed that low axial compression ratio has a little influence on the bearing capacity; with the increase of axial pressure the bearing capacity will decrease in a high axial compression ratio, moreover the failure pattern of joint changes from beam end to column end. The ductility of the specimens is decreased by raising axial compression ratio.

Nonlinear Analysis of I-Shaped Short Pier Shear Wall with Concealed Bracings

2012 ◽  
Vol 472-475 ◽  
pp. 757-760
Author(s):  
Ya E Li ◽  
Yu Hong Tang ◽  
Zhi Hua Li ◽  
Zhi Hai Hao
Keyword(s):  
Axial Compression ◽  
Compression Ratio ◽  
Seismic Behavior ◽  
Shear Wall ◽  
Wall Model ◽  
Skeleton Curve ◽  
Finite Element Software ◽  
Axial Compression Ratio ◽  
Concealed Bracings ◽  
Seismic System

In this paper, research on I-shaped short pier shear wall model which is the relatively weak seismic system components is presented. According to the results of Finite element software ABAQUS simulation, the influence of the bearing capacity, ductility and skeleton curve behavior on the I-shaped short pier shear wall with concealed bracings is mainly studied under different axial compression ratio and different reinforcement proportion of the concealed bracings. The results indicate that the I-shaped short pier shear wall with concealed bracings has a higher carrying capacity, and the ductility has also been enhanced. And the factor that axial compression ratio, reinforcement proportion of the concealed bracings significantly affect the seismic behavior of the I-shaped short pier shear wall with concealed bracings

Damage Analysis of the SRHSHPC Frame Columns under Low Cyclic Reversed Horizontal Loading

2008 ◽  
Vol 385-387 ◽  
pp. 97-100 ◽  
Author(s):  
Shan Suo Zheng ◽  
Liang Zhang ◽  
Bin Wang ◽  
Lei Li ◽  
Lei Zeng
Keyword(s):  
Axial Compression ◽  
Compression Ratio ◽  
High Performance Concrete ◽  
Concrete Strength ◽  
Damage Model ◽  
Damage Development ◽  
Maximum Deformation ◽  
Shear Span ◽  
Axial Compression Ratio ◽  
Horizontal Loading

Based on tests under low cyclic reversed horizontal loading, damage behaviors of steel reinforced high strength and high performance concrete (SRHSHPC) frame columns are analyzed. The strength attenuation that considered as damage variable is figured out, and the influence of axial compression ratio, shear span ratio, stirrup ratio and concrete strength on the strength attenuation is discussed. The accumulative damage model, which can reveal the effect of cyclic loading and maximum deformation, is established for the SRHSHPC frame columns. The different phases of damage growth and their features for the SRHSHPC frame columns are analyzed, and the relation of damage and displacement is ascertained. Furthermore, the influence of axial compression ratio, shear span ratio, stirrup ratio and concrete strength on the damage development is also discussed. The results show that the damage model could give a rational description for damaging process of the SRHSHPC frame columns.

Experimental Study on Seismic Performance of AAS-CFST Column

2014 ◽  
Vol 670-671 ◽  
pp. 344-348 ◽  
Author(s):  
Wen Feng Chen ◽  
Xiao Hui Yuan ◽  
Bin Li
Keyword(s):  
Axial Compression ◽  
Seismic Performance ◽  
Compression Ratio ◽  
Deformation Mode ◽  
Steel Tube ◽  
Hysteretic Behavior ◽  
Initial Stiffness ◽  
Skeleton Curve ◽  
Smooth Test ◽  
Axial Compression Ratio

Three model specimens of alkali-activated slag concrete filled steel tube (AAS-CFST) with different axial compression ratio and steel ratio were designed and tested in the present study. The seismic performance of the structures were evaluated by testing them with combined lateral constant compression and vertical cyclic loads. The structural performance, such as the testing observations, hysteretic behavior, skeleton curve, stiffness degradation, energy dissipation capacity and ductility performance was discussed in detailed. The results show that all the specimens’ damage were bending deformation mode, and the hysteretic curves are relatively smooth. Test data indicated that increased the axial compression ratio improved the load bearing capacity, initial stiffness.

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.

Seismic performance and shear bearing-capacity of truss SRC beam-column frame joints

2020 ◽  
pp. 136943322097729
Author(s):  
Zhiheng Deng ◽  
Changchun Xu ◽  
Jian Zeng ◽  
Huaping Wang ◽  
Xiaoping Wu ◽  
...  
Keyword(s):  
Energy Dissipation ◽  
Bearing Capacity ◽  
Axial Compression ◽  
Seismic Performance ◽  
Compression Ratio ◽  
Design Parameters ◽  
Skeleton Curve ◽  
Axial Compression Ratio ◽  
Section Size ◽  
Shear Bearing Capacity

The structural performance of a frame joint is particularly important, which can determine the safe state of the global structure. For this reason, the seismic performance of the truss steel reinforced concrete (SRC) beam-column frame joints is investigated by the experimental study and the nonlinear finite element modeling. The main design parameters include the section size of the web rods, the axial compression ratio and the section size of I-steel. The failure mechanism, load-displacement skeleton curve, the ductility and energy dissipation capacity, and shear deformation in the core zone of the truss SRC beam-column joints are studied. A formula is put forward to describe the shear bearing-capacity of the joints. The results indicate that the truss SRC beam-column frame joints generally have good seismic performance. The size of steel and web members have impact on the seismic performance of the truss SRC beam-column joints, and the axial compression ratio is an important factor that impacts the hysteresis behavior and energy dissipation. The proposed shear bearing-capacity formula can objectively reflect the performance of the joints.

scholarly journals Calculation Model of Shear Capacity of Multiple Composite Core Column Joints Based on Softened Tension-Compression Bar Model

2021 ◽  
Vol 2021 ◽  
pp. 1-11
Author(s):  
Xu Wentao ◽  
Yang Chengyu
Keyword(s):  
Axial Compression ◽  
Compression Ratio ◽  
Engineering Application ◽  
Effective Area ◽  
Shear Capacity ◽  
Ratio Method ◽  
Shear Span ◽  
Axial Compression Ratio ◽  
Hysteretic Performance ◽  
Core Column

This paper aims to study the seismic performance of multiple composite core column joints. The influence of the stress mechanism, axial compression ratio, and shear span ratio on the failure mode, hysteretic performance, and shear capacity of the multiple composite core column joints was studied through the low-reversed cyclic loading tests of three specially designed and manufactured multiple composite core column joints. The angle ratio method is used to calculate the effective area of the vertical tie bar, and based on the mechanism of the softening tension-compression bar, the formula for calculating the shear capacity of the joint with multiple composite core column is established. In addition, it is also verified by the test data in this paper. The experimental results show that when the axial compression ratio increases from 0.26 to 0.45, the number and width of cracks at the beam end decrease. When the shear span ratio increases from 1.67 to 2.22, the number and width of cracks at the joint beam end increase. The average value and standard deviation of the ratio between the measured value and the calculated value of the shear capacity are 0.97 and 0.16, indicating that the proposed calculation method has a high agreement with the actual value and strong engineering application.

Axial Compression Ratio on Seismic Performance of CFPR Steel Tube Composite Columns Filled with Steel Reinforced Concrete

2013 ◽  
Vol 351-352 ◽  
pp. 687-690
Author(s):  
Ya Feng Xu ◽  
Yue Wang ◽  
Shou Yan Bai
Keyword(s):  
Reinforced Concrete ◽  
Axial Compression ◽  
Compression Ratio ◽  
Great Influence ◽  
Steel Tube ◽  
Skeleton Curve ◽  
Composite Columns ◽  
Steel Reinforced Concrete ◽  
Axial Compression Ratio ◽  
Axis Compression

To study the mechanical properties of CFPR steel tube composite columns filled with steel reinforced concrete under different axis compression ratio by adopting 3 specimens of theirs quasistatic tests are carried out. The failure mechanism and test results are analyzed with member of the load-displacement hysteretic curves, skeleton curves. The results show that the axial compression ratio decreases conducive to the improvement of the bearing capacity of specimens. Axial compression ratio has a great influence on the skeleton curve and ductility. Axial compression ratio is higher, the descent stage of the skeleton curve is steeper, the ductility is better. With the increase of the axial compression ratio, the ductility coefficient and energy dissipation capacity is lower.

scholarly journals Experimental Study On Hysteretic Behavior of Concrete Filled Square CFRP Steel Tubular Beam-Column

2021 ◽  
Author(s):  
Wang Qing-li ◽  
Kuan Peng ◽  
Guo Yi-Huan ◽  
Shao Yong-bo
Keyword(s):  
Energy Consumption ◽  
Axial Compression ◽  
Compression Ratio ◽  
Deformation Mode ◽  
Hysteretic Behavior ◽  
Stiffness Degradation ◽  
Middle Section ◽  
Cumulative Energy ◽  
Skeleton Curve ◽  
Axial Compression Ratio

Abstract In order to study the hysteretic behavior of concrete filled square CFRP steel tubular Beam-Column under different influence factors, 12 specimens were designed, and the failure mode, middle section lateral force-deflection(P-Δ) curve, middle section bending moment-curvature(M-φ) curve and middle section deflection-deformation(Δ−Δ') curve were studied. Axial compression ratio and longitudinal CFRP reinforcement coefficient as influencing factors, the effects of axial compression ratio and longitudinal CFRP reinforcement coefficient on P-Δ skeleton curve, M-φ skeleton curve, strength and stiffness degradation, ductility, cumulative energy consumption and other indexes were studied; the P-Δ curve and deformation mode of the specimens were simulated by ABAQUS, and the effects of axial compression ratio, slenderness ratio and other main parameters on the hysteretic performance of the members were studied. The test results show that CFRP has good lateral restraint and longitudinal reinforcement effect on CFST, and the local buckling of CFST is delayed. The P-Δ curve and M-φ curve of all specimens are full. In addition, the steel tube and CFRP have good synergy in both longitudinal and transverse directions. The change of axial compression ratio and longitudinal CFRP reinforcement coefficient has no significant effect on the strength degradation. The increase of axial compression ratio and longitudinal CFRP reinforcement coefficient can improve the flexural capacity and stiffness of the specimens, and slow down the stiffness degradation, but reduce the ductility and cumulative energy consumption of the specimens. The finite element software ABAQUS is used to simulate the P-Δ curve and deformation mode of specimens. It is found that the simulation results are in good agreement with the experimental results. Based on the model analysis of the main parameters, it is found that the increase of steel yield strength and CFRP layers can improve the bearing capacity of the specimens, and the axial compression ratio has the most significant effect on the specimens.

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