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Optimization of energy dissipation devices, rolling systems and hydraulic couplers for reducing seismic risk to structures and industrial facilities

Objective



Objectives and content

Earthquake protection of important buildings and bridges, potentially hazardous industrial plant and vital equipment is of key importance on both safety and economic grounds. Constructors, plant designers and equipment manufacturers have the need for additional techniques for providing that protection. Manufacturers, developers and end-users of anti-seismic devices have identified methods, which together have the potential significantly to augment the options currently available and therefore greatly increase the possibility that economic seismic protection can be provided to any particular structure, plant or equipment. Three types of device -elasto-plastic, viscous dampers, hydraulic couplers - require significant optimisation of existing technology and fabrication methods. Others - viscoelastic dampers, and particularly rolling-ball systems - need even more extensive development and evaluation; the last, however, may be effective for light, complex structures which are otherwise difficult to protect. The principle objectives are to optimise the design manufacture and performance of the five types of device mentioned, to fabricate prototypes and to evaluate the benefits of the devices to design of safe structures. The properties of the devices will be characterised, and theoretical models produced. Structure mock-ups, in particular civil buildings, sections of chemical or other industrial plant (liquefied natural gas tank and curved pipeline segments), and equipment (in particular HV electrical switchgear) protected by the most appropriate type of device will be tested under seismic loadings and the performance of the devices assessed. Comparison with predictions of structural response using a theoretical model of the particular device will enable the adequacy of those models for structural design purposes to be evaluated. The test programme will provide information for the appropriate CEN Technical Committee intending to draw up appropriate standards for anti-seismic devices.

The project will lead to a range of optimised devices which together should provide constructors and equipment manufacturers with sufficient options for seismic protection to cover many of the situations where existing methods are not satisfactory. The collection of the information required for a users' manual will form part of the work programme.

The consortium embraces device manufacturers (ALGA and FIP), construction and equipment fabricators (BOUYGUES and GEC-ALSTHOM), end-users of structures and equipment (BOUYGUES and ENEL), research and development teams who are leaders in the field (ENEA, MRPRA and IST), and laboratories (JRC-ISPRA, ISMES and LIN) with unrivalled facilities in seismic and dynamic testing.

Funding Scheme

CSC - Cost-sharing contracts

Coordinator

ENEL SPA
Address
Via Pozzobonelli 6
20162 Milano
Italy

Participants (10)

Alga SpA
Italy
Address
Via Olona 12
20123 Milano
Bouygues
France
Address
1,Avenue Eugâne Freyssinet 1
78061 Saint-quentin-en-yvelines
Commission of the European Communities
Italy
Address
Via E. Fermi 1
21020 Ispra - Varese
ENEA - Ente per le Nuove Tecnologie, l'Energia e l'Ambiente
Italy
Address
Via Martiri Di Monte Sole 4
40129 Bologna
ENEL.HYDRO SPA
Italy
Address
Via Pastrengo 9
24068 Seriate
FIP Industriale SpA
Italy
Address
Via Scapacchio 41
35030 Selvazzano Dentro Pordenone
GEC Alsthom T&D SA
France
Address
130,Rue Léon Blum 130
69611 Villeurbanne
INSTITUTO SUPERIOR TECNICO
Portugal
Address
Av. Rovisco Pais 1
1049-001 Lisboa
Tun Abdul Razak Research Centre Ltd.
United Kingdom
Address
Brickendonbury
SG13 8NL Stevenage - Hertford
Università degli Studi di Bologna
Italy
Address
Viale Risorgimento 2
40136 Bologna