A method for probabilistic seismic design of RC structures

In accordance with the philosophy of performance based seismic design (PBSD), the fully operational performance level (or service performance level) for frequently occurring earthquakes and the criteria for determining its allowable drift indices is discussed in this paper. To determine the allowable drift limits of the service performance level for frequently occurring earthquake, it is important that not only the degree of damage of nonstructural members but also the degree of cracking in structural components should be controlled. Based on an analysis of test results and calculation results, a series of allowable drift index limits that conform to the fully operational performance level of RC structures are presented.

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Discussion and Method on Performance Based Seismic Design for Concrete-Filled Steel Tubular Structures

Advanced Materials Research ◽

10.4028/www.scientific.net/amr.163-167.372 ◽

2010 ◽

Vol 163-167 ◽

pp. 372-375

Author(s):

Wen Da Wang ◽

Xiu Li Xia ◽

Yan Li Shi

Keyword(s):

Seismic Design ◽

Earthquake Engineering ◽

Tubular Structures ◽

Design Code ◽

Theory Analysis ◽

Rc Structures ◽

Engineering Research ◽

Seismic Design Code ◽

Specific Performance ◽

Performance Based Seismic Design

The theory of performance-based seismic design (PBSD) is the key issue for the modern earthquake engineering research. With comparison of the traditional prescriptive seismic design code based on the bearing capacity design, the PBSD method presents the specific performance object for the buildings. On the base of the background and development of the PBSD about reinforced concrete (RC) structures, some researches and design approaches of PBSD were proposed for the concrete-filled steel tubular (CFST) structures based on the research results on PBSD of RC structures and the mechanical behavior of CFST structures. Some theory analysis was performed to investigate the PBSD performance of CFST structures. This is referred to further study on PBSD for CFST structures.

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Seismic Assessment of RC Structures in Service Affected by Reinforcement Corrosion

Advanced Materials Research ◽

10.4028/www.scientific.net/amr.163-167.3263 ◽

2010 ◽

Vol 163-167 ◽

pp. 3263-3266

Author(s):

Du Jian Zou ◽

Tie Jun Liu ◽

Hai Xia Lv ◽

Jun Teng

Keyword(s):

Seismic Design ◽

Time History ◽

Working Life ◽

Concrete Cover ◽

Chloride Ions ◽

Reinforcement Corrosion ◽

Rc Structures ◽

Acceleration Time History ◽

Limit Value

The safety and serviceability of RC structures are time-dependent due to degradation phenomena, therefore assessing the fulfillment of required levels of safety and serviceability up to the end of the design working life of the structure is particular important. Among the most frequent environmental attacks affecting RC structures, reinforcement corrosion is considered the most dangerous source of degradation, which may occur only after depassivation due to carbonation of concrete cover, penetration of chloride ions, or a combination of both. In this paper, the effects of rebars corrosion on seismic response of RC structures were presented. A case study was analysed using time history analyses, in sound as well as damaged conditions, assuming a moderate corrosive attack. The outcomes were discussed in terms of displacement time history curves and acceleration time history curves. In addition, the interstory drift obtained form time history analyses was compared and discussed with the limit value provided by Code for seismic design of building.

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