scholarly journals Prestressed Steel Reinforced Concrete Frame Applied to Outer-jacketing Structure and its Restoring Force Model Based on IDARC

2013 ◽  
Vol 6 (11) ◽  
pp. 2045-2051
Author(s):  
Jing Ji ◽  
Wen-fu Zhang ◽  
Chao-qin Yuan ◽  
Dan Yang ◽  
Fei Xing
Keyword(s):  
Reinforced Concrete ◽  
Force Model ◽  
Reinforced Concrete Frame ◽  
Restoring Force ◽  
Steel Reinforced Concrete ◽  
Concrete Frame ◽  
Model Based ◽  
Restoring Force Model

Study on Moment-Curvature Hysteretic Model of Steel Reinforced Concrete Column

2011 ◽  
Vol 250-253 ◽  
pp. 2749-2753
Author(s):  
Ling Xin Zhang ◽  
Ping Chuan Wu ◽  
Gui Hong Ni
Keyword(s):  
Reinforced Concrete ◽  
Seismic Analysis ◽  
Force Model ◽  
Concrete Column ◽  
Hysteretic Model ◽  
Reinforced Concrete Column ◽  
Restoring Force ◽  
Steel Reinforced Concrete ◽  
Restoring Force Model ◽  
Hysteretic Characteristics

The study on the hysteretic characteristics of steel reinforced concrete (SRC) members is the basis of nonlinear seismic analysis of such structures. So in this paper, by summarizing the hysteretic features of SRC members, a quadrant-linear restoring-force model is suggested. Then the model is verified with available experimental results and proved to be effective and reliable.

scholarly journals The Hysteresis Performance and Restoring Force Model for Corroded Reinforced Concrete Frame Columns

2016 ◽  
Vol 2016 ◽  
pp. 1-19 ◽  
Author(s):  
Guifeng Zhao ◽  
Meng Zhang ◽  
Yaoliang Li ◽  
Dawang Li
Keyword(s):  
Reinforced Concrete ◽  
Seismic Energy ◽  
Equivalent Model ◽  
Hysteresis Curve ◽  
Force Model ◽  
Rc Frame ◽  
Reinforced Concrete Frame ◽  
Restoring Force ◽  
Skeleton Curve ◽  
Restoring Force Model

A numerical simulation of the hysteresis performance of corroded reinforced concrete (RC) frame columns was conducted. Moreover, the results obtained were compared with experimental data. On this basis, a degenerated three-linearity (D-TRI) restoring force model was established which could reflect the hysteresis performance of corroded RC frame columns through theoretical analysis and data fitting. Results indicated that the hysteretic bearing capacity of frame columns decreased significantly due to corrosion of the rebar. In view of the characteristics of the hysteresis curve, the plumpness of the hysteresis loop for frame columns decreased and shrinkage increased with increasing rebar corrosion. All these illustrated that the seismic energy dissipation performance of frame columns reduced but their brittleness increased. As for the features of the skeleton curve, the trends for corroded and noncorroded members were basically consistent and roughly corresponded to the features of a trilinear equivalent model. Thereby, the existing Clough hysteresis rule can be used to establish the restoring force model applicable to corroded RC frame columns based on that of the noncorroded RC members. The calculated skeleton curve and hysteresis curve of corroded RC frame columns using the D-TRI model are closer to the experimental results.

Seismic Performance Evaluation for Steel Reinforced Concrete Frame Structures

2011 ◽  
Vol 255-260 ◽  
pp. 2421-2425
Author(s):  
Qiu Wei Wang ◽  
Qing Xuan Shi ◽  
Liu Jiu Tang
Keyword(s):  
Reinforced Concrete ◽  
Seismic Performance ◽  
Frame Structure ◽  
Reinforced Concrete Frame ◽  
Seismic Performance Evaluation ◽  
Steel Reinforced Concrete ◽  
Concrete Frame ◽  
Structural Capacity ◽  
Reinforced Concrete Frame Structures ◽  
Dynamic Nonlinear Analysis

The randomness and uncertainty of seismic demand and structural capacity are considered in demand-capacity factor method (DCFM) which could give confidence level of different performance objectives. Evaluation steps of investigating seismic performance of steel reinforced concrete structures with DCFM are put forward, and factors in calculation formula are modified based on stress characteristics of SRC structures. A regular steel reinforced concrete frame structure is analyzed and the reliability level satisfying four seismic fortification targets are calculated. The evaluation results of static and dynamic nonlinear analysis are compared which indicates that the SRC frame has better seismic performance and incremental dynamic analysis could reflect more dynamic characteristics of structures than pushover method.

Seismic Performance Analysis of Steel Reinforced Concrete Frame-Concrete Core Wall Structure

2011 ◽  
Vol 243-249 ◽  
pp. 740-745 ◽  
Author(s):  
Qing Ning Li ◽  
Qing Mei Liu ◽  
Lin Zhao
Keyword(s):  
Reinforced Concrete ◽  
Time History ◽  
Wall Structure ◽  
Reinforced Concrete Frame ◽  
Concrete Core ◽  
Steel Reinforced Concrete ◽  
Concrete Frame ◽  
High Rise ◽  
History Analysis ◽  
Rare Earthquake

A steel reinforced concrete frame-concrete core wall structure is taken as the research object in this paper. The whole space finite element models are established by software ETABS, modal analysis, response spectrum method and elastic time-history analysis are conducted. And static elastio-plastic time history analysis of the high-rise structure is conducted by software MIDAS/GEN. Seismic response of the high-rise structure is analyzed under medium earthquake and rare earthquake , elastic deformation is calculated under conventional earthquake and elastic-plastic deformation is calculated under rare earthquake. The results show that the structure can meet the requirements of no-damage under light earthquake, repairable under medium earthquake and no-collapse under strong earthquake.

Research on Quantified Performance Index for Steel Reinforced Concrete Frame Structures

2011 ◽  
Vol 368-373 ◽  
pp. 3353-3356
Author(s):  
Qiu Wei Wang ◽  
Qing Xuan Shi ◽  
Liu Jiu Tang
Keyword(s):  
Reinforced Concrete ◽  
Performance Index ◽  
Frame Structures ◽  
Reinforced Concrete Frame ◽  
Steel Reinforced Concrete ◽  
Concrete Frame ◽  
Performance Based Seismic Design ◽  
Reinforced Concrete Frame Structures ◽  
Relationship Of ◽  
Theoretical Results

The interstory drift of frame structures is caused by beams, columns and joints. The calculation formula of storey yield drift for reinforced concrete frame structures is obtained by adding above three kind of deformation, and the comparative analysis show that theoretical results have good consistency with experimental data. The expression formula of storey yield drift angle for steel reinforced concrete (SRC) frame structures are analyzed by using the same hypothesis and methods, and quantified performance index for SRC frames having a certain guarantee value are proposed according to relationship of four seismic performance levels. The conclusion obtained provide basic information for performance-based seismic design of SRC frame structures.

scholarly journals Seismic Behavior of Reinforced Concrete Frame Joints in Coastal Atmosphere

2020 ◽  
Vol 2020 ◽  
pp. 1-15
Author(s):  
Chen Cao ◽  
Shan-suo Zheng ◽  
Wei-bing Hu ◽  
Li-guo Dong ◽  
Xiao-rui Liu
Keyword(s):  
Reinforced Concrete ◽  
Energy Dissipation ◽  
Axial Compression ◽  
Atmospheric Environment ◽  
Force Model ◽  
Rc Frame ◽  
Restoring Force ◽  
Restoring Force Model ◽  
Salt Fog Corrosion ◽  
Salt Fog

The study aims to research the influence of salt fog corrosion cycles on seismic performance of reinforced concrete (RC) frame beam-column joints in coastal atmosphere. Based on low cyclic loading tests of six RC frame beam-column joint specimens, this study analyses the failure patterns, hysteresis loops, load carrying capacity, displacement, backbone curves, and energy dissipation capacity of corrosion-damaged RC frame beam-column joints. The effect of salt fog corrosion cycles and axial compression ratios are tested repeatedly. The results show that with the same level of axial compression of the frame joint specimens, as the increase of salt fog cycles, the strength, ductility, energy dissipation, bearing capacity, and deformation capacity of joints degenerated to different degrees． When the corrosion level is the same, the stiffness degradation appeared to be more apparent as the increase of axial compression ratio. Then, the behavior degeneration rule of the RC frame beam-column joints is analyzed and formed according to the results of the test; the degeneration restoring force models of corroded RC frame beam-column joints is formed and verified based on Clough’s three-line degenerate restoring force model and the introduction to cyclic degeneration index. The results show that the restoring force model can better describe the hysteresis characteristics of the beam-column joints of corroded RC frames. The research is a theoretical reference for the seismic analysis of the RC frame structure affected by coastal atmospheric environment.

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