scholarly journals The Bearing Capacity Calculation Method of Cracked Reinforced Concrete Column at High Temperature

2017 ◽  
Vol 11 (1) ◽  
pp. 887-895
Author(s):  
Yuzhuo Wang ◽  
Jian Song ◽  
Cancan Wang ◽  
Chuanguo Fu
Keyword(s):  
Reinforced Concrete ◽  
High Temperature ◽  
Bearing Capacity ◽  
Element Model ◽  
Concrete Column ◽  
Reinforced Concrete Column ◽  
Numerical Studies ◽  
Different Types ◽  
Capacity Calculation ◽  
Parametric Studies

Introduction: This paper presents results from a set of numerical studies on the cracked reinforced concrete column at high temperature. Methods: The macroscopic finite element model used in the accounts analysis for high temperature properties of constitutive materials. The validity of the model is established by comparing the predictions from numerical analysis with the data measured in the fire test. Result and Conclusion: Data from the test indicated that the temperature of rebar in column with cracks is 57% ~ 130% higher than that without cracks under the same condition, and different types of crack had significant influence on the bearing capacity of column. These results from parametric studies were utilized to propose ultimate bearing capacity of cracked reinforced concrete column.

Stimulation Analysis of High Temperature Bearing Capacity of Steel Reinforced Concrete Column Strengthened by CFRP

2013 ◽  
Vol 351-352 ◽  
pp. 401-405
Author(s):  
Cheng Zhu Qiu ◽  
Gang Yang
Keyword(s):  
Reinforced Concrete ◽  
High Temperature ◽  
Bearing Capacity ◽  
Cross Section ◽  
Concrete Columns ◽  
Concrete Column ◽  
Reinforced Concrete Column ◽  
Simulation Research ◽  
Steel Reinforced Concrete ◽  
Finite Element Software

The steel reinforced concrete column is one of the important members for structures, it is essential to study the high temperature performance of concrete column. The numerical simulation research is done using finite element software ANSYS. Under the high temperature, the analysis of the compressive bearing capacity and flexural capacity of the concrete columns strengthened by CFRP is done, and the compressive bearing capacities of different cross-section concrete columns strengthened with CFRP are tested.

Temperature Field Analysis of Steel Reinforced Concrete Column in Fire

2013 ◽  
Vol 351-352 ◽  
pp. 615-618 ◽  
Author(s):  
Jian Hua Chen ◽  
Chao Ma ◽  
Jian Hua Li ◽  
Qin Qian
Keyword(s):  
Temperature Field ◽  
Reinforced Concrete ◽  
High Temperature ◽  
Field Analysis ◽  
Concrete Column ◽  
Distribution Law ◽  
Reinforced Concrete Column ◽  
Element Analysis ◽  
Steel Reinforced Concrete ◽  
Nice Agreement

In order to analyze the mechanical properties of the remaining carrying capacity of steel reinforced concrete columns after exposure to fire, full preparations must be needed. In this paper, the numerical simulation of the temperature field of steel reinforced concrete column section was being adopted the finite element analysis software MSC.MARC to analyze. Temperature distribution law of the column cross-section in the case of uneven fire was obtained. There has a nice agreement between calculation and original test data which created the conditions for high temperature and high temperature performance analysis for SRC columns

Analysis and Prospect of Size Effect on Normal Section Bearing Capacity of Reinforced Concrete Column

2013 ◽  
Vol 351-352 ◽  
pp. 422-426
Author(s):  
Yong Ping Xie ◽  
Lei Jia ◽  
Gang Sun
Keyword(s):  
Compressive Strength ◽  
Reinforced Concrete ◽  
Theoretical Analysis ◽  
Size Effect ◽  
Bearing Capacity ◽  
Concrete Column ◽  
Concrete Compressive Strength ◽  
Reinforced Concrete Column ◽  
Normal Section

With the development of modern constructional technique, more attention on the size effect is paid by academics and engineers. The normal section bearing capacity of Reinforced Concrete Column is analyzed by eccentrically compressed theory firstly. The size effect on normal section bearing capacity of reinforced concrete column is obtained by theoretical analysis and experimental summary. The size effect formula of concrete compressive strength is proposed. Finally, a research thinking of size effect on bearing capacity is suggested.

Experimental Research on Bearing Capacity of Concrete Columns with High Strength Concrete Core under Axial Compression Loading

2012 ◽  
Vol 479-481 ◽  
pp. 2041-2045
Author(s):  
Yue Qi
Keyword(s):  
Reinforced Concrete ◽  
Bearing Capacity ◽  
Axial Compression ◽  
High Strength Concrete ◽  
High Strength ◽  
Concrete Columns ◽  
Concrete Column ◽  
Reinforced Concrete Column ◽  
Concrete Core ◽  
Strength Concrete

Based on experimental research on plain concrete columns with high strength concrete core, the formula to predict the bearing capacity of concrete columns with high strength concrete core under axial compression loading was brought forward in previous paper, in order to verify the formula whether right, axial compression test including 3 concrete columns with high strength concrete core and 1 ordinary reinforced concrete column were completed, and the failure characteristic was analyzed additionally. According to experimental results, it can be shown that the failure modes of concrete columns with high strength concrete core are similar to that of ordinary reinforced concrete columns, however, the bearing capacity of concrete columns with high strength concrete core is significant higher compared with that of ordinary reinforced concrete column; the results of the bearing capacity obtained by the formula (2) was in good agreement with the experimental results.

Research Progress of Shear Behavior of Reinforced Concrete Column with Rectangular Section in Fire

2014 ◽  
Vol 1065-1069 ◽  
pp. 2323-2327
Author(s):  
Yue Yao ◽  
Yong Jun Liu ◽  
Xue Wang
Keyword(s):  
Reinforced Concrete ◽  
High Temperature ◽  
Shear Capacity ◽  
Research Progress ◽  
Concrete Column ◽  
Temperature Analysis ◽  
Reinforced Concrete Column ◽  
Rectangular Section ◽  
Research Results ◽  
In Fire

Nowadays there are lots of cases in which buildings collapse as a result of fire. As the main infrastructure of a building, column’s losing its shear capacity in the fire is one of the factors that causes the buildings collapse. This essay fouses on the summary of the research results of column shear capacity at high temperature, analysis of the reasons why column shear and wreck in the fire, review of experiments , simulators, and the outlook of its development in the future.

scholarly journals Finite Element Modeling of a Reinforced Concrete Column Strengthened with Steel Jacket

2018 ◽  
Vol 4 (5) ◽  
pp. 916
Author(s):  
Hamza Mahdi Salman ◽  
Mohannad Husain Al-Sherrawi
Keyword(s):  
Finite Element ◽  
Reinforced Concrete ◽  
Finite Element Model ◽  
Element Model ◽  
Concrete Column ◽  
Reinforced Concrete Column ◽  
Steel Jacket ◽  
First Case ◽  
Live Loads ◽  
Axial Resistance

The reinforced concrete column is designed to have a nominal axial resistance. Under different conditions like errors in design, and changing the use of the building from residential to public or storage (extra live loads), the reinforced concrete column will not be able to sustain the desired applied load, and the strengthening is required. This paper presents a finite element model to simulate and investigate the behavior of adding steel jacket to a preloaded and non-damaged reinforced concrete column. Depending on the loading state of the non-strengthened reinforced concrete column and the purpose of adding the steel jacket, two possible cases have been studied. In the first case, which is suitable to investigate the reinforced concrete column with design errors, the steel jacket has been added to the unloaded reinforced concrete column; while the second case is suitable for adding steel jacket to the pre-loaded non-damaged reinforced concrete column. The finite element model was carried out using the ABAQUS/standard v. 6.13 software. The results obtained by the proposed finite element model showed fairly good agreement with the existing experimental and analytical results.

Mechanical Behavior Analysis of Reinforced Concrete Column Strengthening with Shear Wall

2013 ◽  
Vol 438-439 ◽  
pp. 696-700
Author(s):  
Peng Tian ◽  
Xu Dong Shi ◽  
Yuan Qing Wang ◽  
Yan Nian Zhang
Keyword(s):  
Reinforced Concrete ◽  
Bearing Capacity ◽  
Wall Thickness ◽  
Mechanical Performance ◽  
Concrete Columns ◽  
Shear Wall ◽  
Concrete Column ◽  
Reinforced Concrete Column ◽  
Skeleton Curve ◽  
Reversed Loading

This paper studies the influences of factors such as axial compressive ratio and shear wall thickness on the mechanical performance of the reinforced concrete column strengthening with shear wall under low-cyclic reversed loading. Considering the secondary stress characteristics of the strengthening column, a numerical analysis was made on the load displacement hysteretic curve and skeleton curve. The results show that, with the increasing of axial compression ratio, the bearing capacity and stiffness of reinforced concrete column increased, but the ductility of reinforced column reduced; the bearing capacity and rigidity of reinforced column strengthening with shear wall increase while the ductile was lower; the change of shear wall thickness has a little effect on the bearing capacity, but improves the energy dissipation capacity of reinforced concrete columns.

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.

Analysis Research of Reinforced Concrete Z-Shaped Column Normal Section Bearing Capacity

2011 ◽  
Vol 94-96 ◽  
pp. 258-261
Author(s):  
Bai Shou Li ◽  
Bin Bo Yang
Keyword(s):  
Reinforced Concrete ◽  
Bearing Capacity ◽  
High Reliability ◽  
Concrete Column ◽  
Reinforced Concrete Column ◽  
Normal Section ◽  
Ansys Simulation ◽  
Finite Element Software ◽  
Elastic Curve ◽  
The Difference

In view of the fact that the Z-shaped reinforced concrete column normal section bearing capacity formula has not been clear about the difference stipulation question with other specially column section bearing capacity computation, carries on axial compression-test of the Z- shaped reinforced concrete column with different volume reinforcement characteristic. In this article, established the Z shape column's load - elastic curve, promoted the Z-shaped column normal section bearing capacity formula including section correlation coefficient, and carried on the simulation using the ANSYS finite element software. The result indicated that the ANSYS simulation value was closely with the experimental value and the formula predicted value, and the formula predicted value security, has the high reliability.

Research on Compression Failure and Size Effect in High Strength Eccentric Reinforced Concrete Column

2012 ◽  
Vol 193-194 ◽  
pp. 656-661 ◽  
Author(s):  
Cedrick Mbang Matamb ◽  
Xiu Li Du ◽  
Jian Wei Zhang
Keyword(s):  
Reinforced Concrete ◽  
Size Effect ◽  
Bearing Capacity ◽  
Cross Section ◽  
High Strength ◽  
Concrete Column ◽  
Reinforced Concrete Column ◽  
Failure Characteristics ◽  
Compression Failure ◽  
Characteristics Analysis

This test was investigated on the compression failure in eccentric reinforced concrete square cross-section. In total twelve different scale specimens were eccentrically compressed with size of: 200×200mm; 400×400mm; 800×800mm. specimens were divided into 3 groups with 4 each. Only six columns have been investigated in this paper thus a column by eccentricity. The main point were based on the existence of size effect phenomenon on cross-section components collapsed with different sizes to the ultimate bearing capacity and the cross-section strain, ductility, deflection, and other failure characteristics. Analysis of the experimental data’s showed that the size effect phenomenon exists.

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