ITSA20120012A1

ITSA20120012A1 - ANTI-SEISMIC SUSPENSION SYSTEM

Info

Publication number: ITSA20120012A1
Application number: IT000012A
Authority: IT
Inventors: Augusto Pierri
Original assignee: Augusto Pierri
Priority date: 2012-10-19
Filing date: 2012-10-19
Publication date: 2013-01-18

Description

DESCRIZIONE DESCRIPTION

TITOLO: “SISTEMA ANTISISMICO A SOSPENSIONI” TITLE: "SUSPENSION ANTI-SEISMIC SYSTEM"

L’idea si basa sul principio fìsico per il quale un corpo, sotto l’azione di forze esterne, tende a restare nella propria posizione grazie alla propria massa. The idea is based on the physical principle according to which a body, under the action of external forces, tends to remain in its position thanks to its mass.

In tale ottica il sistema proposto è conformato in modo da isolare le fondazioni vere e proprie dello stabile dalle strutture a contatto con il suolo in modo da ridurre notevolmente, se non annullare, le pericolose spinte orizzontali dovute al sisma. In this perspective, the proposed system is shaped in such a way as to isolate the real foundations of the building from the structures in contact with the ground in order to considerably reduce, if not cancel, the dangerous horizontal thrusts due to the earthquake.

Essenzialmente esso consiste nel sospendere, mediante pendoli o tiranti, liberi di oscillare in ogni senso orizzontale, ad una struttura scatolare molto rigida adeguatamente conformata a contatto del terreno, la struttura di base sulla quale grava 10 stabile in elevazione. Essentially it consists in suspending, by means of pendulums or tie rods, free to oscillate in any horizontal direction, to a very rigid box-like structure suitably shaped in contact with the ground, the base structure on which the stable structure rests in elevation.

In occasione di movimenti tellurici, mentre la struttura a contatto del terreno segue 11 movimento del suolo, l’edifìcio, per l’inerzia dovuta alla sua massa, grazie ai pendoli, tutti verticali e paralleli nonché senza vincoli orizzontali, resta fermo o si muove molto meno del terreno. During telluric movements, while the structure in contact with the ground follows the movement of the ground, the building, due to the inertia due to its mass, thanks to the pendulums, all vertical and parallel as well as without horizontal constraints, remains stationary or moves much less than the ground.

I tiranti sono dimensionati per sovrasollecitazioni verticali e dotati di un sistema atto a smorzare le brusche spinte verticali dovute a sismi sussultori The tie rods are sized for vertical overstresses and equipped with a system designed to dampen the abrupt vertical thrusts due to jolting earthquakes.

Un insieme di ammortizzatori a contorno della base dell’edificio, posti in senso inclinato, attutisce eventuali oscillazioni sia orizzontali che verticali. A set of shock absorbers around the base of the building, placed in an inclined direction, cushion any horizontal or vertical oscillations.

Tutti i componenti descritti, in conformità a quanto disposto dalle norme tecniche antisismiche, sono ispezionabili e sostituibili. All the components described, in compliance with the provisions of the anti-seismic technical standards, can be inspected and replaced.

II sistema, mediante interventi più articolati e attraverso adeguati studi, può trovare applicazione anche su immobili già esistenti, particolarmente in quelli di pregio storico artistico. The system, through more articulated interventions and through adequate studies, can also find application on existing buildings, particularly in those of historical and artistic value.

DESCRIZIONE: DESCRIPTION:

Il sistema si compone di ima struttura altamente rigida, scatolare, interrata o comunque a contatto del terreno, nella quale e alla quale viene “sospesa” mediante membrature e pendoli o tiranti, tutti verticali, paralleli e liberi di oscillare in qualsiasi direzione, un’altra struttura sulla quale si articola lo stabile vero e proprio. The system consists of a highly rigid structure, box-like, buried or in any case in contact with the ground, in which and from which it is "suspended" by means of members and pendulums or tie rods, all vertical, parallel and free to swing in any direction, a another structure on which the real building is articulated.

Appena un po’ più complesso delle tradizionali fondazioni a travi rovesce in conglomerato cementizio armato, delle quali occupa pressocché la stessa altezza, poiché riduce notevolmente le sollecitazioni sismiche comportando strutture in elevazione molto più snelle, il sistema resta valido anche dal punto di vista economico. Just a little more complex than traditional backward beam foundations in reinforced concrete, of which it occupies almost the same height, since it greatly reduces seismic stresses resulting in much leaner elevated structures, the system remains valid also from an economic point of view.

Esso può essere realizzato in tutti i materiali usati oggi nel campo delle costruzioni: legno, acciaio o altri metalli, calcestruzzo armato, fibre di vetro o di carbonio, materiali plastici, gomma etc. ciascuno utilizzato per la sua caratteristica meccanica precipua, nei componenti e in schemi, sezioni e composizioni, come di seguito rappresentati per solo esempio, debitamente calcolati e dimensionati secondo i principi della scienza delle costruzioni. It can be made of all materials used today in the construction field: wood, steel or other metals, reinforced concrete, glass or carbon fibers, plastic materials, rubber etc. each used for its main mechanical characteristic, in the components and in diagrams, sections and compositions, as shown below for example only, duly calculated and sized according to the principles of construction science.

Come accennato, a solo titolo esemplificativo, si riporta un possibile schema costruttivo in cemento armato nel quale sono evidenziati i componenti salienti e dove è evidenziato il suo funzionamento. As mentioned, by way of example only, a possible construction scheme in reinforced concrete is shown in which the salient components are highlighted and its operation is highlighted.

Claims

CLAIMS 1. Safeguard of everything that weighs on the system, in particular the lives of the inhabitants preserved not only from possible collapses of parts, structural or otherwise, of the building but also from falls of furniture and furnishings.

2. Resolution of the anti-seismic structural problem with a relatively simple technology with the use of commonly used techniques and methodologies;

3. Cancellation or at least strong abatement of the horizontal stresses of seismic actions and movements;

4. Preservation of elevated structures in the event of an earthquake as well as non-structural parts of the building;

5. Preservation of all the contents of a building, furniture and furnishings, in the event of an earthquake.

6. Resolution of the problem of dissipating the horizontal and vertical thrust as well as maintaining the building on site after the earthquake without complicated mechanisms.

7. Also economic validity of the system because the reduction of seismic stresses involves much leaner structures in elevation;

8. Possibility of application on existing buildings of particular historical and artistic value but also not.

9. Accessibility to all suspensions for periodic inspections and maintenance and therefore possible replacement of components as determined by the anti-seismic regulations in force.

10. Possibility of differentiated sizing and adjustment of each suspension in order to obtain a uniform tension in all the tie rods. Possibility of differentiated sizing and adjustment of every suspension, to get uniform stress in each tie beam.