Seismic Damage Model for Steel Reinforced High Strength and High Performance Concrete Frame Joints

2007 ◽  
Vol 348-349 ◽  
pp. 837-840
Author(s):  
Shan Suo Zheng ◽  
Lei Zheng ◽  
Lei Li ◽  
Shun Li Che ◽  
Liang Zhang
Keyword(s):  
Axial Compression ◽  
Compression Ratio ◽  
High Performance ◽  
High Performance Concrete ◽  
Damage Model ◽  
High Strength ◽  
Seismic Damage ◽  
Damage Analysis ◽  
Concrete Frame ◽  
Axial Compression Ratio

Based on damage mechanics and failure model, a seismic damage model applying to steel reinforced high strength and high performance concrete frame joints is put forward, which takes deformation and cumulative damage into account. The damage performance of five tentative frame joints is compared and analyzed according to deformation and dissipated hysteretic energy under different loading levels, and the main influence factors on damage performance are established. The damage indexes of tentative frame joints are calculated, and the influence of strength grade of concrete and axial compression ratio on damage performance is discussed. The results indicate that the general damage is controlled by the damage of concrete in the earlier stage of loading, and by the damage of shape steel and stirrup in the later stage of loading; joints with lower axial compression ratio and lower concrete strength grade possess better hysteretic energy performance. Damage analysis provides an available means for the research of steel reinforced high strength and high performance concrete frame joints under seismic load. The damage model presented can be a reference for seismic damage analysis of the structure, prediction of earthquake damage in future, estimation of economic loss and repair after earthquake.

Component Seismic Damage Model for SRHSHPC Joints

2009 ◽  
Vol 417-418 ◽  
pp. 705-708
Author(s):  
Shan Suo Zheng ◽  
Bin Wang ◽  
Lei Li ◽  
Wei Wang ◽  
Jin Chuan He
Keyword(s):  
High Performance ◽  
High Performance Concrete ◽  
Damage Model ◽  
High Strength ◽  
Seismic Damage ◽  
Reduction Factor ◽  
Damage Analysis ◽  
Ultimate Deformation ◽  
Number Of Cycles ◽  
Relationship Of

The deficiency of present damage model is generalized by studying existing references. The mechanical properties of steel reinforced high strength and high performance concrete (SRHSHPC) members under monotonic loading, including the capacity of ultimate deformation, strength, stiffness, etc. are analyzed after the different number of cycles. The reduction factor is introduced, the dynamic variation relationship of ultimate deformation with the number of cycles is obtained, and the merits of existing damage model are utilized, finally the seismic damage model, which is suitable for SRHSHPC beam-column joints, is established. In order to verify the rationality of damage model, Opensees as a nonlinear analysis program is adopted to simulate SRHSHPC joints, the comparison of the numerical analysis results with experimental results shows that the proposed damage model can capture the behaviors of joints very well. The model can, therefore, be used to carry out seismic damage analysis of other SRHSHPC members.

Seismic Damage Law of Steel Reinforced High Strength and High Performance Concrete Frame Columns

2010 ◽  
Vol 450 ◽  
pp. 231-234 ◽  
Author(s):  
Shan Suo Zheng ◽  
Pi Ji Hou ◽  
Bin Wang ◽  
Lei Li ◽  
Zhi Qiang Li
Keyword(s):  
High Performance ◽  
High Performance Concrete ◽  
Concrete Strength ◽  
Damage Model ◽  
Damage Index ◽  
High Strength ◽  
Seismic Damage ◽  
Experimental Result ◽  
Concrete Frame ◽  
Damage Models

In this paper, the damage performance of 13 SRHSHPC frame columns are tested and analyzed under low cycle loading. The effect of concrete strength, axial compression ratio and shear span ratio on the damage of SRHSHPC frame columns is discussed, and then the experimental result is quantified with damage index. Based on existing seismic damage models, a new seismic damage model is put forward for SRHSHPC frame columns by a nonlinear combination of deformation and accumulative dissipation.

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.

scholarly journals Seismic Damage Model of High-Strength Reinforced Concrete Frame Columns

2021 ◽  
Vol 237 ◽  
pp. 03025
Author(s):  
Guojun Zhang
Keyword(s):  
Damage Model ◽  
Damage Index ◽  
High Strength ◽  
Concrete Columns ◽  
Seismic Damage ◽  
Strength Concrete ◽  
Concrete Frame ◽  
Damage Models ◽  
Axial Compression Ratio ◽  
History Of

In this paper, several existing seismic damage models as well as their characteristics were discussed first of all. And then it was figured out that variational history of incremental dissipated hysteretic energy of tentative frame columns under different loading cycle levels; the influence of axial compression ratio, type of stirrups, stirrup ratio, reinforcement ratio, strength grade of concrete and shear span ration on the incremental dissipated hysteretic energy was discussed and analysed. The damage index of tentative frame columns was compared and analysed according to the existing seismic damage models, and the seismic damage models adapt to high-strength concrete columns and ordinary-strength concrete columns were offered. The influence of shear span ration, axial compression ratio and stirrup ratio on the damage was discussed and analysed according to the variational history of the damage index under different loading cycle levels. Lastly through analysing all sorts of seismic damage models comparatively, the seismic damage model of high strength concrete frame columns is put forward, which offers good basement for further damage analysis.

Seismic Damage Analysis of SRHSHPC Frame Beams

2012 ◽  
Vol 166-169 ◽  
pp. 2001-2004
Author(s):  
Bin Wang ◽  
Shansuo Zheng ◽  
Fei Yu
Keyword(s):  
High Performance ◽  
High Performance Concrete ◽  
Design Method ◽  
Damage Model ◽  
High Strength ◽  
Seismic Damage ◽  
Stiffness Degradation ◽  
Earthquake Resistant Design ◽  
Study Results ◽  
Strength And Stiffness

Based on the test results of steel reinforcement high strength high performance concrete (SRHSHPC) frame beams, a new seismic damage model of SRHSHPC frame beams considered the strength and stiffness degradation was proposed, which was a non-linear combination of the deformation and accumulative damage. The results can more clearly reflect the laws of strength and stiffness degradation of SRHSHPC frame beams under reversed loading. The study results can supply the theory support for the seismic damage assessment and the establishment of damage-based earthquake-resistant design method of SRHSHPC members.

Study on the Behaviors of Steel Reinforced Concrete Cloumns

2011 ◽  
Vol 368-373 ◽  
pp. 248-252
Author(s):  
Bao Sheng Yang ◽  
Yun Yun Li
Keyword(s):  
Bearing Capacity ◽  
Axial Compression ◽  
Compression Ratio ◽  
High Strength Concrete ◽  
Seismic Behavior ◽  
Slenderness Ratio ◽  
High Strength ◽  
Concrete Columns ◽  
Axial Compression Ratio ◽  
High Strength Concrete Columns

The influence on columns behaviors of slenderness ratio are analyzed, and the influence on columns’ anti-seismic behavior of axial compression ratio, stirrup ratio and steel form are analyzed through the test on bearing capacity and level load of low cycle reverse of steel reinforced high-strength concrete columns. The bearing capacity of the long columns reduces along with the slenderness ratio increasing and augments along with concrete strength increasing. Probability of suddenly destruct increases along with the column slenderness ratio augmenting through the test. In addition, anti-seismic behavior of columns are effected not only axial compression ratio, but also steel form. Axial compression coefficien of the steel reinforced high-strength concrete columns with different steel form may be adjusted, however, the influence of stirrup ratio is very little on anti-seismic behavior of columns.

Study on the Sensitivity Factors Affecting the Anti-Seismic Performances of Steel Reinforced High-Strength Concrete Columns

2013 ◽  
Vol 405-408 ◽  
pp. 845-849
Author(s):  
Yun Yun Li ◽  
Bao Sheng Yang
Keyword(s):  
Axial Compression ◽  
Seismic Performance ◽  
Compression Ratio ◽  
High Strength Concrete ◽  
High Strength ◽  
Concrete Columns ◽  
Limit Values ◽  
Strength Concrete ◽  
Axial Compression Ratio ◽  
High Strength Concrete Columns

Through the experimental tests on 6 steel reinforced high-strength concrete columns under low cyclic horizontal loads, the influence on anti-seismic performance of the columns under different axial compression ratio, stirrup ratio and steel form is analyzed, and that anti-seismic performance of the columns is affected not only by axial compression ratio, but also by steel form. For steel reinforced high-strength concrete columns with different steel forms, the limit values of axial compression ratio may be adjusted, while the influence of stirrup ratio is not prominent.

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