Seismic Retrofit of Non-ductile RC Frames Using Friction Dampers PDF Download
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Author: Rajesh Shankar Rao
Publisher:
ISBN:
Category :
Languages : en
Pages : 602
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Book Description
Author: Rajesh Shankar Rao
Publisher:
ISBN:
Category :
Languages : en
Pages : 602
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Book Description
Author: R. S. Rao
Publisher:
ISBN:
Category : Damping (Mechanics)
Languages : en
Pages : 154
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Book Description
Author: Chih-Ping Fan
Publisher:
ISBN:
Category : Damping (Mechanics)
Languages : en
Pages :
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Book Description
Many reinforced concrete (RC)) frame buildings constructed in the United States during the 1950s through 1970s were designed for gravity loads only using the non-seismic design provisions of the ACI-318 building code and ACI-315 detailing manual. The seismic performance of these RC frame buildings is unsatisfactory with brittle (non-ductile) failure modes that are controlled by poor reinforcing details including reinforcement with inadequate anchorage details, and joints and critical regions with light confinement and inadequate shear reinforcement. In particular, the columns of these non-ductile frame buildings have inadequate strength and ductility. Therefore, these buildings require retrofit to provide good seismic performance.
Author:
Publisher:
ISBN:
Category : Reinforced concrete construction
Languages : en
Pages : 188
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Book Description
Author:
Publisher:
ISBN:
Category : Buildings, Reinforced concrete
Languages : en
Pages : 40
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Book Description
Author:
Publisher:
ISBN:
Category : Earthquake engineering
Languages : en
Pages : 210
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Book Description
Author: Zaid Al-Sadoon
Publisher:
ISBN:
Category :
Languages : en
Pages :
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Book Description
Author: Comité euro-international du béton
Publisher: Thomas Telford
ISBN: 9780727720856
Category : Technology & Engineering
Languages : en
Pages : 328
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Book Description
This report examines the behaviour of individual frame members subjected to the cyclic actions arising in seismically loaded frames i.e. slender flexure-dominated beams, short columns and beam-column joints. The report also considers global inelastic frame behaviour and its modelling, and the peculiarities of the behaviour of masonry-filled frames.
Author: Yahya Kurama
Publisher:
ISBN:
Category : Reinforced concrete construction
Languages : en
Pages : 67
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Book Description
Author: Ali Molaei
Publisher:
ISBN:
Category : University of Ottawa theses
Languages : en
Pages :
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Book Description
A large number of building inventory in Canada and elsewhere in the world consists of non-ductile reinforced concrete frames, with or without masonry infill panels. These structures suffer damage when seismic force demands are higher than their force capacities. Therefore, seismic retrofitting of such frame buildings for drift control remains to be a viable option for improved building performance. A retrofit methodology has been developed in the current research project, which involves diagonal bracing of frames with prestressing strands. An experimental research project has been conducted to assess the effectiveness of diagonal prestressing in non-ductile reinforced concrete frame buildings. The experimental program consists of two large-scale single-bay single-storey reinforced concrete frames, with a height of 3.0m and a span length of 3.5 m. The frames were designed and built to reflect the 1960's practice in Canada, without the seismic requirements of current building codes, and hence are seismically deficient. They were retrofitted with diagonally placed prestressing strands, having two different areas of steel, prestressed to 40% of the strand capacity. One of the frames was retested after the failure of the strands, with a new set of strands without any prestressing, forming the third test. The results indicate that lateral bracing reinforced concrete frames with high-strength prestressing strands is an effective strategy for controlling lateral drift and hence potential damage in buildings during strong earthquakes. Prestressing of the strands increases initial stiffness, as compared to non-prestressed cables, and provide superior performance. The area of diagonally placed steel (including the number of strands) and the level of initial prestressing depend on the required level of upgrade in the building in terms of seismic force requirements. The design procedure recommended in this thesis may be employed for implementing the technology. The thesis presents the details of the experimental program, and the test results. It also provides analytical verification of the approach, with a step-by-step design procedure.
