scholarly journals Stiffness Degradation of Shear Wall with Frame Column and its Influence to Structural Performance

2022 ◽  
Vol 2148 (1) ◽  
pp. 012038
Author(s):  
Ming Wen ◽  
Zipeng Huang ◽  
Xinfang Wang ◽  
Baokui Chen ◽  
Yu Wan
Keyword(s):  
Axial Compression ◽  
Compression Ratio ◽  
Element Model ◽  
Shear Wall ◽  
Stiffness Degradation ◽  
Amplification Coefficient ◽  
Stiffness Ratio ◽  
Maximum Displacement ◽  
Axial Compression Ratio ◽  
Practical Engineering

Abstract The shear wall with frame column has a wide application prospect in practical engineering for it has better ductility, bearing capacity and stiffness degradation than the shear wall with unframed column. In this paper, the finite element model of shear wall with frame column for an experiment was established in ABAQUS software firstly, Then on the base of proving the model’s precision, the axial compression ratio and the stiffness ratio of shear wall with frame column were adjusted, the influence of different axial compression ratio and stiffness ratio on the stiffness degradation coefficient was analyzed and the corresponding formulas were fitted. At last, by changing the axial compression ratio and the stiffness ratio of shear wall with frame column, The influence of stiffness degradation on the maximum displacement amplification coefficient and the bottom shear amplification coefficient were studied and the relevant formulas were fitted.

The seismic performance of precast short-leg shear wall under cyclic loading

2020 ◽  
pp. 136943322096372
Author(s):  
Xiuli Du ◽  
Min Wu ◽  
Hongtao Liu
Keyword(s):  
Energy Consumption ◽  
Cyclic Loading ◽  
Axial Compression ◽  
Seismic Performance ◽  
Compression Ratio ◽  
Structural Parameters ◽  
Shear Wall ◽  
Shear Capacity ◽  
Axial Compression Ratio ◽  
Hysteretic Performance

In order to study the seismic performance of precast short-leg shear wall connected by grouting sleeves (PSSW), the three-dimensional numerical model was established by using the experiment of PSSW subjected to low cyclic loading. Based on good agreement between numerical results and experimental results, the numerical analysis models with different structural parameters of axial compression ratio and splicing position were designed in detail, and the effects of various parameters on the seismic performance of PSSW were analyzed. The results show that the PSSW exhibits wide and stable hysteresis loops, indicating a satisfactory hysteretic performance and an excellent energy consumption capacity. With the increase of the axial compression ratio, the shear capacity of horizontal splice seam is improved, but the ductility coefficient and total energy consumption decrease obviously. The most disadvantageous position of PSSW can be effectively avoided by changing the position of the post pouring seam. The bearing capacity of the specimens is basically stable, and the energy consumption increases significantly, so the post pouring seam of precast wall is recommended to be far away from the bottom section of the wall. In addition, the failure mechanism of different splicing positions was analyzed in detail.

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

scholarly journals Insight into the Effect of Adhesive Interface on the Ultimate Capacity of the Double-Superposed Shear Wall

2018 ◽  
Vol 2018 ◽  
pp. 1-18
Author(s):  
Wenying Zhang ◽  
Lianping Yang ◽  
Shaole Yu ◽  
Xinxi Chen ◽  
Xuewei Zhang
Keyword(s):  
Bearing Capacity ◽  
Axial Compression ◽  
Compression Ratio ◽  
Precast Concrete ◽  
Boundary Elements ◽  
Shear Wall ◽  
Ultimate Bearing Capacity ◽  
Ultimate Capacity ◽  
Axial Compression Ratio ◽  
Adhesive Interface

This paper presents the results of a numerical and analytical study to investigate the effect of adhesive interface on the ultimate capacity of a new composite sandwich shear wall: double-superposed shear wall. The effect of adhesive interface on the ultimate capacity of two different wall configurations under different axial compression ratios was studied. The results indicate that, for the two different wall configurations, the bond strength of adhesive interface has a negligible effect on ultimate bearing capacity. As a result of the different intensity grades between cast-in-situ concrete wythe and precast concrete wythe, the double-superposed shear wall with precast boundary elements (wall configuration W3) yields a higher ultimate bearing capacity than that with cast-in-place boundary elements (wall configuration W2), when the axial compression ratio exceeds 0.2, which is contrary to the results under 0.1 axial compression ratio. A new calculation method for ultimate bearing capacity is proposed to take into account the different intensity grades, and the calculation results show a very good agreement with the numerical simulation results.

Research on Defect and Adjustment of Complex Shear Wall Partitioned Design Method

2011 ◽  
Vol 243-249 ◽  
pp. 980-984
Author(s):  
Xue Yi Fu ◽  
Jia Xin Qu
Keyword(s):  
Axial Compression ◽  
Compression Ratio ◽  
Design Method ◽  
Concrete Strength ◽  
Shear Walls ◽  
Shear Wall ◽  
Axial Compression Ratio ◽  
Complex Shear ◽  
Section Design ◽  
Effective Flange Width

Both reference [1~2] method and partitioned design method (GB 50010-2002) were adopted to design complex shear walls, and some factors such as axial compression ratio, reinforcing ratio, section dimension, concrete strength grade and effective flange width were considered, then their limited loading capacity would be compared with each other when axial force was considered as a fixed value. It was found that there were some defects of complex shear wall partitioned design method. And its applied conditions were suggested, which included section restricted condition and limited value of axial compression ratio. When these conditions couldn’t be satisfied, the adjusted reinforcement partitioned design method of reference [3] was suggested. If the uneconomical problem of partitioned design method could not be accepted, whole section design method of reference [1~2] would be suggested.

Finite Element Analysis of the Precast Shear Walls

2013 ◽  
Vol 275-277 ◽  
pp. 1276-1280
Author(s):  
Yun Lin Liu ◽  
Wan Yun Yin ◽  
Ru Ling ◽  
Ke Wei Ding ◽  
Ren Cai Jin ◽  
...  
Keyword(s):  
Finite Element Analysis ◽  
Finite Element ◽  
Axial Compression ◽  
Seismic Performance ◽  
Compression Ratio ◽  
Shear Wall ◽  
Element Analysis ◽  
Axial Compression Ratio ◽  
Precast Shear Wall ◽  
The Finite Element Analysis

To reduce the construction cost of the domestic promotion of the new prefabricated concrete shear wall structure system which is promoted in our country. To analyze the factors which can affect the load-carrying capacity and seismic performance of shear wall, including the axial compression ratio, the concrete strength, the reinforcement ratio and some other factors. Among all these factors, the axial compression ratio is the main factor influencing the seismic performance and the section ductility [1]. This paper adopts the ANSYS finite element analysis program, operating a nonlinear analysis on the performance of the precast shear wall when it is with one-way loading, studying the axial compression ratio's effect on the bearing capacity and deformability of the precast shear wall. According to the finite element analysis, when the axial compression ratio is between 0.2 to 0.4 and as it rises, the specimen's bearing capacity and stiffness will increases while deformability and ductility will decrease. Through the finite element analysis, we can provide reliable theory basis for the performance of the precast shear wall when it is with one-way loading.

Effect of axial compression ratio on concrete-filled steel tube composite shear wall

2018 ◽  
Vol 22 (3) ◽  
pp. 656-669 ◽  
Author(s):  
Hetao Hou ◽  
Weiqi Fu ◽  
Canxing Qiu ◽  
Jirun Cheng ◽  
Zhe Qu ◽  
...  
Keyword(s):  
Bearing Capacity ◽  
Axial Compression ◽  
Compression Ratio ◽  
Shear Walls ◽  
Shear Wall ◽  
Steel Tube ◽  
Concrete Filled Steel Tube ◽  
Axial Compression Ratio ◽  
Composite Shear Wall ◽  
Composite Shear

This study proposes a new type of shear wall, namely, the concrete-filled steel tube composite shear wall, for high performance seismic force resisting structures. In order to study the seismic behavior of concrete-filled steel tube composite shear wall, cyclic loading tests were conducted on three full-scale specimens. One conventional reinforced concrete shear wall was included in the testing program for comparison purpose. Regarding the seismic performance of the shear walls, the failure mode, deformation capacity, bearing capacity, ductility, hysteretic characteristics, and energy dissipation are key parameters in the analysis procedure. The testing results indicated that the bearing capacity, the ductility, and the energy dissipation of the concrete-filled steel tube composite shear walls are greater than that of conventional reinforced concrete shear walls. In addition, the influence of axial compression ratio on the seismic behavior of concrete-filled steel tube composite shear wall is also investigated. It was found that higher axial compression ratio leads to an increase in the bearing capacity of concrete-filled steel tube composite shear walls while a reduction in the ductility capacity.

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.

Bearing Capacity of Frame’s Column Strengthened with Addition Flange Wall

2010 ◽  
Vol 160-162 ◽  
pp. 614-618 ◽  
Author(s):  
Ru Heng Wang ◽  
Bin Jia ◽  
Wen Guo ◽  
Chao Fan
Keyword(s):  
Bearing Capacity ◽  
Numerical Integration ◽  
Axial Compression ◽  
Compression Ratio ◽  
Special Section ◽  
Lateral Stiffness ◽  
Engineering Structures ◽  
Axial Compression Ratio ◽  
The Poor ◽  
Practical Engineering

A large number of frames damaged due to the poor lateral stiffness in “5.12” earthquake. Additonal flange wall could effectively improve the lateral stiffness. This paper analyzed the behavior capability of special-shaped column of the practical engineering structures, meanwhile, obtained N-M curve, Mx-My curve and M-φ of biaxial eccentricity compression based on numerical integration method.The results show that,the failure mode of special section column after reinforcing and rectangular column under the biaxial eccentricity compression are conform,including fail in tension or compression and the limit failure. When the axial compression ratio is quite slightly,and section eccentric tension destruction, the thrust increases, the anti-bending ability increases.When section bearing destruction, along with axle strength enlargement, the anti-bending ability reduces.And the results reveal the axial compression ratio could influence the bearing capacity and ductility of frame’s column obviously.

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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