Urban Habitat Constructions under Catastrophic Events FINAL - PowerPoint PPT Presentation

Urban Habitat Constructions under Catastrophic Events FINAL CONFERENCE. Naples, 16 th - 18 th September 2010 Chair of the Action: Federico Mazzolani , IT, fmm@unina.it COST Science Officer: Thierry Goger , tgoger@cost.esf.org The solid springer rule – behavior under dynamic stress Study case : The Castle of Gagliano Aterno (AQ) M. Candela Mediterranean University of Reggio Calabria, P.A.U Department, Italy R. Fonti “ Federico II” University, D.I.S.T. Department, Napoli, Italy

Italy Gagliano Aterno (Aq) Castle Urban Habitat Constructions underCatastrophic Events FINAL CONFERENCE. Naples, Abruzzo Gagliano Aterno (Aq) Castle view Gagliano Aterno village L’Aquila area

The Catastrophic Event of 6 th April 2009 L'Aquila Earthquake - hour : 03:32 L’Aquila Urban Habitat Constructions underCatastrophic Events FINAL CONFERENCE. Naples, L’Aquila Epicentre – L’Aquila record Gagliano Aterno Gagliano Aterno’s Castle: 6 th April 2009 – L’Aquila Earthquake

Gagliano Aterno (Aq) the Castle Urban Habitat Constructions underCatastrophic Events FINAL CONFERENCE. Naples, Northern front Plane section : second floor Gagliano Aterno’s Castle: Geometrical features

1st Phase: the oldest masonry 2nd Phase : 600‘ elements - part of the original It became an house-castle - was plan that arrived intact until introduced the double open gallery now Urban Habitat Constructions underCatastrophic Events FINAL CONFERENCE. Naples, the double open gallery Gagliano Aterno’s Castle: Typological reading

Urban Habitat Constructions underCatastrophic Events FINAL CONFERENCE. Naples, Double open gallery: first floor cross vaults sequence Double open gallery: ground floor barrel vaults sequence Gagliano Aterno’s Castle: Typological reading

3th Phase : 1800 – early part of 1900‘ s We have: - the replacement of some masonry covering structures with wooden one, in both levels - the construction of some pavilion vaults, in bricks, at the first floor Urban Habitat Constructions underCatastrophic Events FINAL CONFERENCE. Naples, Rebuilding area Building area - new covering elements Gagliano Aterno’s Castle: Typological reading

Urban Habitat Constructions underCatastrophic Events FINAL CONFERENCE. Naples, Detail 1 Detail 1 Double open gallery: first floor Wooden structures Gagliano Aterno’s Castle: Typological reading Double open gallery: first floor wall painted and old cracks view

2nd Phase scheme ground floor – plane section with cracks the double open gallery Urban Habitat Constructions underCatastrophic Events FINAL CONFERENCE. Naples, damaged area Photo: barrel vaults and façade of the open gallery - distinction Gagliano Aterno’s Castle: Damage Analysis

damaged 3th Phase scheme area First floor – plane view with cracks Rebuilding area Urban Habitat Constructions underCatastrophic Events FINAL CONFERENCE. Naples, Building area - new covering elements damaged area Photo: cross vault damage springer level Gagliano Aterno’s Castle: Damage Analysis

Area investigated We have two problems: - the deformation of the south-west front of the double open gallery Urban Habitat Constructions underCatastrophic Events FINAL CONFERENCE. Naples, - the hinges development on cross vaults lineout Double open gallery – first floor photo Gagliano Aterno’s Castle: Damage Analysis

Second problem First problem Urban Habitat Constructions underCatastrophic Events FINAL CONFERENCE. Naples, Crack detail Crack detail 1 2 crack: - duo to cross vaults ending disconnection crack: - duo to front double Gagliano Aterno’s Castle: Damage Analysis open gallery disconnection

First problem - Traditional Repair analyses Urban Habitat Constructions underCatastrophic Events FINAL CONFERENCE. Naples, 2 1 Different seismic devices - Metallic tie-rod - Wooden tie with wooden anchor Gagliano Aterno’s Castle: Damage Analysis

Second problem - Detail analyses Urban Habitat Constructions underCatastrophic Events FINAL CONFERENCE. Naples, 3 Different behavior under dynamic condition for one side to the other one Detail 3 solid springer frontal view at extrados level solid springer lateral view Gagliano Aterno’s Castle: Damage Analysis

Second problem - Area subject to solid repair springer repair Urban Habitat Constructions underCatastrophic Events FINAL CONFERENCE. Naples, Old part New part Solid springer + double-arc settled on the extrados of the vaults at the cross between them Gagliano Aterno’s Castle: Strategy of intervention

Thank you for your attention Urban Habitat Constructions underCatastrophic Events FINAL CONFERENCE. Naples, «[...] they laterally inserted bricks here and there, with ends connected as comb. This setting suggests the image of right and left hand's fingers tightening one another [...]» «[...] inserivano qua e là dei mattoni con le estremità collegate in forma di pettine, quasi che stringessimo le dita della destra con quelle della sinistra.[...]» (L.B. Alberti, De re aedificatoria - XV) Gagliano Aterno’s Castle: the end