The effect of roof systems on seismic performance of reinforced concrete frame-bent main building of large-scale thermal power plant

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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Seismic performance of ductile medium height reinforced concrete frame buildings designed in accordance with the provisions of the 1995 National Building Code of Canada

Canadian Journal of Civil Engineering ◽

10.1139/l99-020 ◽

1999 ◽

Vol 26 (5) ◽

pp. 606-617 ◽

Cited By ~ 2

Author(s):

A C Heidebrecht ◽

N Naumoski

Keyword(s):

Reinforced Concrete ◽

Seismic Performance ◽

Frame Structure ◽

Performance Criteria ◽

Building Code ◽

Reinforced Concrete Frame ◽

Concrete Frame ◽

Moment Resisting Frame ◽

Moment Resisting ◽

Interstorey Drift

This paper describes an investigation into the seismic performance of a six-storey ductile moment-resisting frame structure located in Vancouver and designed and detailed in accordance with the seismic provisions of the National Building Code of Canada (1995). Both pushover and dynamic analyses are conducted using an inelastic model of the structure as designed and detailed. The structural performance of a number of design variations is evaluated using interstorey drift and member curvature ductility response as performance measures. All frames studied are expected to perform at an operational level when subjected to design level seismic excitations and to meet life safe performance criteria at excitations of twice the design level.Key words: seismic, building, frames, ductile, design, performance, reinforced concrete, code.

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Study of the Seismic Performance of Reinforced Concrete Frame with Reinforcement

International Journal of Digital Content Technology and its Applications ◽

10.4156/jdcta.vol7.issue6.27 ◽

2013 ◽

Vol 7 (6) ◽

pp. 235-243

Author(s):

Jiang YouSheng

Keyword(s):

Reinforced Concrete ◽

Seismic Performance ◽

Reinforced Concrete Frame ◽

Concrete Frame

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Experimental Study on Seismic Retrofitting of Reinforced Concrete Frames Using Welded Concrete-Filled Steel Tubes

Applied Sciences ◽

10.3390/app10207061 ◽

2020 ◽

Vol 10 (20) ◽

pp. 7061 ◽

Cited By ~ 1

Author(s):

Kyong Min Ro ◽

Min Sook Kim ◽

Young Hak Lee

Keyword(s):

Reinforced Concrete ◽

Seismic Performance ◽

Seismic Energy ◽

Maximum Load ◽

Steel Tube ◽

Seismic Retrofitting ◽

Reinforced Concrete Frame ◽

Concrete Frame ◽

Moment Resisting Frames ◽

Moment Resisting

Buildings constructed with non-seismic details are at risk of damage and collapse when an earthquake occurs due to a lack of strength, stiffness, and ductility. For reinforced concrete (RC) moment-resisting frames, seismic retrofitting methods that can enhance strength or ductility should be applied. However, such strategies have many disadvantages related to constructability, serviceability, securing integrity, and cost. In this paper, a welded concrete-filled steel tube (WCFST) system was examined in order to resolve the problems of the existing seismic retrofitting methods for RC moment-resisting frames. To evaluate the seismic performance of the proposed system, two specimens, one with non-seismic details and another reinforced with a WCFST seismic system, were manufactured for the cyclic loading tests. As a result of the experiments, the specimen retrofitted with the WCFST system showed maximum load, effective stiffness, and energy dissipation capacity values approximately 3, 2, and 2.5 times greater, respectively, than those obtained from the existing reinforced concrete frame specimen. The experimental results indicate that the proposed WCFST system is expected to be effective at improving the seismic performance by enhancing both the strength of the existing reinforced concrete frame structures and the dissipation of the seismic energy.

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