Non-Linear Analysis of Z-Shaped Section Reinforced Concrete Column

2011 ◽  
Vol 366 ◽  
pp. 276-280
Author(s):  
Tie Cheng Wang ◽  
Xuan Chen
Keyword(s):  
Reinforced Concrete ◽  
Great Influence ◽  
Linear Analysis ◽  
Material Strength ◽  
Concrete Column ◽  
Analysis Method ◽  
Reinforcing Bars ◽  
Reinforced Concrete Column ◽  
Column Section ◽  
Shaped Section

Making use of the numerical analysis method, the ductility of reinforced concrete column with Z-shaped cross-section was analyzed. Considering stirrup confinements’ influence upon concrete deformation, with using self-made programs, some elements imposing influence on column section ductility were analyzed, such as axial compressive ratio、loading angle、material strength and setting mode of reinforcing bars. The results indicates that the loading angle has great influence on section especially under smaller compressive ratio, while the strength changes of the concrete and reinforced bars has a little influence. Thus, without changing amount of steel, encrypted hooping will effectively improve the ductility of column section.

Study on Ductility Performance of T-Shaped Section Steel Reinforced Concrete Columns

2013 ◽  
Vol 351-352 ◽  
pp. 359-362 ◽  
Author(s):  
Xin Wang
Keyword(s):  
Reinforced Concrete ◽  
Large Scale ◽  
Future Research ◽  
Repeated Loading ◽  
Concrete Column ◽  
Reinforced Concrete Column ◽  
Element Analysis ◽  
Steel Reinforced Concrete ◽  
Mechanics Characteristic ◽  
Shaped Section

This paper, the mechanics characteristic of T-shaped section steel reinforced concrete column under low period repeated loading by using large-scale finite element analysis software ABAQUS was analyzed, combined existing research, the influence of the performance of ductility under different steel ratio and axial compression ratio was studied, we concluded that the T-shaped section steel reinforced concrete column has the very good ductility performance, and put forward the axial compressive ratio limit under the different parameters, and to provide the reference for future research and application.

Stress Analysis of Axial Compression Steel Reinforced Concrete Column under High-Temperature Fire

2011 ◽  
Vol 243-249 ◽  
pp. 691-694
Author(s):  
Shan Suo Zheng ◽  
Qing Lin Tao ◽  
Hong Ren Zhang ◽  
Bin Wang
Keyword(s):  
Reinforced Concrete ◽  
High Temperature ◽  
Stress Analysis ◽  
Axial Compression ◽  
Cross Section ◽  
Superposition Principle ◽  
Material Strength ◽  
Concrete Column ◽  
Reinforced Concrete Column ◽  
Steel Reinforced Concrete

Based on the fact that building material strength degeneration rules in domestic and overseas are different under the high-temperature fire, with the program ANSYS, the temperature stress distribution of cross-section is obtained and the two results are compared according to stress analysis of numerical simulation on the axial compression steel reinforced concrete column (ACSRCC) under high-temperature fire. Based on the conversion principle of different materials stress and the superposition principle, the numerical calculation method on cross-section stress of ACSRCC under high-temperature fire is proposed, and the calculated results agree with simulation data well. The influences of the concrete coverage thickness and other factors on ACSRCC mechanical properties under high-temperature fire are also discussed in the paper.

Experimental Evaluation of Steel Beam Bolted to Reinforced Concrete Column Connections

2008 ◽  
Vol 400-402 ◽  
pp. 311-319 ◽  
Author(s):  
Xian Li ◽  
Yan Xiao
Keyword(s):  
Reinforced Concrete ◽  
Seismic Behavior ◽  
Scale Model ◽  
Material Strength ◽  
Steel Beam ◽  
Concrete Column ◽  
Bottom Flange ◽  
Reinforced Concrete Column ◽  
Floor Slab ◽  
Composite Joint

In order to improve the constructability and meanwhile ensure excellent seismic behavior, an innovative bolted endplate connection to steel beam and reinforced concrete column (RCS) was developed, and three full scale model joints with or without floor slab were tested under simulated seismic loading. The proposed composite joint is characterized by an extended endplate which is welded to steel beam with reduced sections in factory and then bolted to reinforced concrete column using high-strength steel rods in field. The effect of material strength and concrete floor slab on the seismic behavior of joints was studied. Experimental results indicated that both specimens without floor slab exhibited good ductility and energy-dissipating ability with full plastic hinging formed at the reduced sections of steel beam. However, owing to the effect of floor slab, the beam sections became unsymmetrical and positive moment strength of the joint was increased significantly. The specimen with floor slab fractured at the weld between the bottom flange of the beam and the endplate, and the failure mode resembled what occurred during the Northridge earthquake.

scholarly journals Verification of the eccentrically compressed reinforced concrete column calculation model based on the results of a full-scale experimental study

2018 ◽  
Vol 251 ◽  
pp. 04013 ◽  
Author(s):  
Mikhail Andreev ◽  
Sergey Bulushev ◽  
Marina Dudareva
Keyword(s):  
Reinforced Concrete ◽  
Finite Elements ◽  
Software Package ◽  
Experimental Studies ◽  
Concrete Column ◽  
Structural Elements ◽  
Reinforcing Bars ◽  
Reinforced Concrete Column ◽  
Comparison Of The Results ◽  
Joint Behavior

The article presents the results of a numerical experiment consisting in a test of an eccentrically compressed reinforced concrete column and comparison of the results obtained with the results of experimental studies. With the development of numerical methods and software packages, methods (techniques) of modeling structural elements using more detailed calculation models with solid finite elements that allow direct consideration of the joint behavior of concrete and reinforcing bars become relevant. The use of such methods requires verification of individual load-bearing structural elements, such as columns, beams, slabs. The article refers to a nonlinear concrete model – Continuous Surface Cap Model (CSCM). This model is implemented in the LS-DYNA software package and enables to consider the joint behavior of reinforcing bars and concrete, using bar (for reinforcing bars) and solid (for concrete) finite elements. An eccentrically compressed reinforced concrete column of square section with dimensions of 150х150х1150 (h) mm is chosen as an object of modeling. The studies have shown that the ultimate breaking load on the column based on the results of numerical modeling is consistent with the experimental values (discrepancy does not exceed 3.4%). The pattern of development of cracks and fractures, obtained from the results of modeling in the LS-DYNA software package corresponds to the pattern of fractures obtained as a result of experimental studies. According to comparison of the results obtained, it can be argued that a numerical test showed good agreement with the results obtained during full-scale experiments.

Calculation Method Investigation on Jacketing Reinforcement of RC Eccentric Compressive Column Subjected to Fire

2012 ◽  
Vol 166-169 ◽  
pp. 1548-1553
Author(s):  
Jin Jun Guo ◽  
Yan Lu ◽  
Ping Xian Li
Keyword(s):  
Reinforced Concrete ◽  
Temperature Distribution ◽  
Calculation Method ◽  
Load Capacity ◽  
Concrete Column ◽  
Compressive Failure ◽  
Reinforced Concrete Column ◽  
Rc Column ◽  
Column Section ◽  
Reinforcement Design

Based on eccentric compressive experiments of reinforced concrete column strengthened with jacketing method, the paper calculated and analyzed jacketing reinforcement of RC eccentric compressive column subjected to fire. The calculation procedure of residual load capacity of compressive member after fire was put forward according to temperature distribution at column section. To distinguish tensile or compressive failure of RC column, the formulas of relative balanced depth of compressive zone of jacketing section were deduced as well as the corresponding applied calculation method of norm section load capacity was presented under the second loaded stage. In addition, the reinforcement design and construction of one fire damaged building was conducted in terms of this paper’s method. The good running status of strengthened columns for many years validates the applicability of this method.

Study on Bearing Capacity of Reinforced Concrete Column with Z-Shaped Cross-Section under Biaxial Eccentric Compression

2011 ◽  
Vol 243-249 ◽  
pp. 431-437
Author(s):  
Tie Cheng Wang ◽  
Xuan Chen
Keyword(s):  
Reinforced Concrete ◽  
Bearing Capacity ◽  
Cross Section ◽  
Concrete Strength ◽  
Concrete Column ◽  
Analysis Method ◽  
Reinforced Concrete Column ◽  
Factors Affecting ◽  
Eccentric Compression ◽  
Shaped Cross Section

Making use of the numerical analysis method, the bearing capacity of reinforced concrete column with Z-shaped cross-section subjected to biaxial eccentric compression was analyzed in this paper. Some factors affecting the ultimate bearing capacity of Z-shaped reinforced concrete column were studied, such as loading angle, ratio of axial compression, reinforced ratio, concrete strength and reinforcement arrangement in the limb. It is shown that the worst loading angle was near the second center bisector, the bearing capacity can be improved by enhance reinforced ratio, rebar strength or concrete strength, and the reinforcement arrangement in the limb had little effect on the bearing capacity.

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