Anti-seismic elastomeric insulators are elements that are strategically placed between the structure and the foundation of different structures and buildings to reduce structural rigidity. In this way, they are capable of cushioning and absorbing movement, and reducing deformations, in the event of an earthquake.
LDRB type bearings have a low damping coefficient of approximately 6-10%, for this reason their use is limited.
HDRB type bearings have an absorption coefficient of a maximum of 10-16%, their use is quite widespread as it is a highly compensated product in terms of its cost-performance balance.
Perhaps the most widespread currently due to the results obtained in comparison with lower performance bearings after the earthquakes that occurred in L'Aquila and Amatrice in 2009, are supports with lead core (LRB).
More specifically, it can be said that anti-seismic elastomeric insulators serve to decouple the structure or construction from the ground on which it sits, and provide it with sufficient flexibility so that, in the event of an earthquake, the infrastructure is not damaged or collapses. because of the vibration.
Interbuna designs, manufactures and markets the following types:
Our anti-seismic elastomeric insulators have different quality certificates: ISO 9001 and the specific one for structural supports EN 1337-3, which follows European regulations on the matter. Interbuna is also in the process of obtaining the EN 15129 certificate.
Anti-seismic elastomeric insulators are mainly used in bridges and public buildings, such as hospitals, airports and stations, bridges, power generating plants, historical buildings, and also in private constructions, such as hotels, etc. The most used are those of the HDRB type and especially LRB given their good performance in real cases.
Their effectiveness is based on the fact that they isolate the structure from the foundation so that the ground does not transfer the seismic movements and energy that occur during the earthquake to the construction.
Anti-seismic elastomeric insulators are considered the most effective technology to cushion the effects of an earthquake on structures and buildings. In addition, it is possible to install them not only in new constructions and structures, but also in old ones. Its effectiveness is total, and it also allows increasing the useful life of buildings and bridges, minimizing the action of earthquakes on them. Furthermore, they are suitable for installation in structures where space is limited and where it is not possible to install separate support and anti-seismic protection systems.
They resemble type C supports according to the EN1337-3 standard in a circular shape and usually have square anchor plates that are attached to the superstructure and substructure in a way that allows them to be replaced in a simple and inexpensive way.
LRB insulators differ from HDRB and LDRB because inside they have a lead core whose plastic deformation allows the effective absorption of a large amount of energy, this effect combined with the elasticity of the rubber that allows great deformation and rapid recovery make that support is refocused after the earthquake.
Instalation
Does not require maintenance
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A Cacesa commercial that emerged in the late 90s
with a clearly international character and basically focused
in elastomeric bearing and expansion joints for bridges.
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