Seismic fragility analysis of steel reinforced concrete frame structures based on different engineering demand parameters

2018 ◽  
Vol 20 ◽  
pp. 736-749 ◽  
Author(s):  
Chengxiang Xu ◽  
Jie Deng ◽  
Sheng Peng ◽  
Chengyu Li
Keyword(s):  
Reinforced Concrete ◽  
Fragility Analysis ◽  
Seismic Fragility ◽  
Frame Structures ◽  
Reinforced Concrete Frame ◽  
Steel Reinforced Concrete ◽  
Concrete Frame ◽  
Reinforced Concrete Frame Structures ◽  
Engineering Demand Parameters

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.

Seismic Fragility Analysis of SRC Frame Structures

2012 ◽  
Vol 166-169 ◽  
pp. 2042-2045 ◽  
Author(s):  
Shan Suo Zheng ◽  
Wen Bo Li ◽  
Qian Li ◽  
Fan Wang
Keyword(s):  
Rapid Development ◽  
Quantitative Relationship ◽  
Frame Structure ◽  
Seismic Fragility ◽  
Frame Structures ◽  
Reinforced Concrete Frame ◽  
Steel Reinforced Concrete ◽  
Concrete Frame ◽  
Damage Degree ◽  
Reinforced Concrete Frame Structures

With the rapid development and extensive application of SRC (steel reinforced concrete) frame structures, the study on seismic fragility of SRC structure under earthquakes seems rather important. The seismic fragility of the SRC frame structures is studied by the method of Incremental Dynamic Analysis (IDA) in this paper. IDA method is conducted on 9 storey SRC frame structure to obtain the IDA curves of this model. Meanwhile, the seismic fragility of the model is analyzed to get the fragility curve. The result shows that IDA can describe the quantitative relationship between the exceeding probability of different states and damage degree of the target.

Fragility Analysis Method for Vertically Irregular Reinforced Concrete Frame Structures

2008 ◽  
Vol 400-402 ◽  
pp. 587-592
Author(s):  
Jin Jie Men ◽  
Qi Zhou ◽  
Qing Xuan Shi
Keyword(s):  
Reinforced Concrete ◽  
Fragility Analysis ◽  
Frame Structures ◽  
Analysis Method ◽  
Reinforced Concrete Frame ◽  
Performance Levels ◽  
Concrete Frame ◽  
Drift Ratio ◽  
Story Drift ◽  
Reinforced Concrete Frame Structures

This paper concentrates on the fragility analysis method for vertically plan reinforced concrete frame structures. The weakness story inter-story drift ratio is selected as the fragility variable for vertically plan structures. Five states are established to distinguish the structural seismic performance levels, which are expressed with inter-story drift ratio. Then through the nonlinear dynamic analysis and linear regress, the exceeding probability function of seismic response is obtained and a new fragility analysis method is put forward for vertically irregular frame structures. Two kind of unit models, two kind of hysteretic models and forty earthquake records are chosen to established structure-earthquake system samples. Thus one hundred and twenty structure-earthquake system samples are obtained for irregular reinforced concrete frame, which take into account the uncertainty of member materials, structures systems, numerical simulation models and earthquake motions adequately. Then example is presented to demonstrate the applicability and utility of the proposed methodology. Seismic performances of a vertically irregular reinforced concrete frame structure are evaluated in detail. It is concluded that fragility curves are more abrupt in low input earthquake motion intensity and they are influenced much by the structural performance levels.

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.

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