TY - JOUR
T1 - Repair and retrofitting of rc walls using selective techniques
AU - Elnashai, A. S.
AU - Pinho, R.
N1 - Funding Information:
The experimental work was carried out by Dr. A. I. Salarna, as part of his doctoral thesis at Imperial College. The tests were funded by the UK Science and Engineering Research Council. The current work is supported financially by the European Community through the research network ICONS (Innovative Concepts for Seismic Design of New and Existing Structures) and by the Calouste Gulbenkian Foundation.
PY - 1998
Y1 - 1998
N2 - In the context of capacity design philosophy, where a desired failure mode exhibiting adequate levels of energy absorption capacity is envisaged, control must be exercised on the member behaviour to safeguard the achievement of the target overall response. Therefore, local repair and retrofitting methods that result in unquantifiable effects on seismic response characteristics should be re-assessed. In contrast, techniques to affect, in a controlled and easy-to-monitor fashion, individual design response parameters, i.e. stiffness, strength and ductility, may provide a new framework for repair and retrofitting earthquake-damaged structures to mirror ‘capacity design’ principles used for new structures. Such an approach is discussed in this paper and possible scenarios where selective intervention may be required are identified. A number of tests on RC walls are also reviewed to confirm the feasibility of the proposed intervention techniques. Finally, extensive parametric studies are carried out, using verified analytical models, leading to the derivation of selective re-design expressions and guidelines.
AB - In the context of capacity design philosophy, where a desired failure mode exhibiting adequate levels of energy absorption capacity is envisaged, control must be exercised on the member behaviour to safeguard the achievement of the target overall response. Therefore, local repair and retrofitting methods that result in unquantifiable effects on seismic response characteristics should be re-assessed. In contrast, techniques to affect, in a controlled and easy-to-monitor fashion, individual design response parameters, i.e. stiffness, strength and ductility, may provide a new framework for repair and retrofitting earthquake-damaged structures to mirror ‘capacity design’ principles used for new structures. Such an approach is discussed in this paper and possible scenarios where selective intervention may be required are identified. A number of tests on RC walls are also reviewed to confirm the feasibility of the proposed intervention techniques. Finally, extensive parametric studies are carried out, using verified analytical models, leading to the derivation of selective re-design expressions and guidelines.
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U2 - 10.1080/13632469809350334
DO - 10.1080/13632469809350334
M3 - Article
AN - SCOPUS:0032328489
SN - 1363-2469
VL - 2
SP - 525
EP - 568
JO - Journal of Earthquake Engineering
JF - Journal of Earthquake Engineering
IS - 4
ER -