Isolation bearing

The isolation bearing refers to the supporting device that is arranged to achieve the isolation requirement. It is an isolation layer between the upper structure and the foundation, and a rubber isolation bearing is installed to make a soft connection with the ground. It can offset about 80% of the energy of the earthquake. For example, laminated rubber bearings (or isolated rubber bearings, laminated rubber pads, etc.). It is a structural member with small horizontal stiffness and large vertical stiffness, which can withstand large horizontal deformation and can be used as part of the load-bearing system. Such seismic technology is derived from the development of rocket engines.
The traditional seismic technology is to firmly connect the superstructure and foundation of the building, that is, to make the house firmer and cast with thicker steel bars and more concrete, but the seismic effect is not ideal. The isolation bearing is to add an isolation layer between the upper structure and the foundation, and install a rubber isolation bearing to make a soft connection with the ground. With such a technology, the energy of about 80% of the earthquake can be offset. Such seismic technology comes from rocket engines, which were developed by designers who developed rocket solid-state engines.
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Since the 1960s and 1970s, people have carried out comparative systematic research and experiments on seismic isolation bearings, and conducted experiments in actual engineering, and made a lot of follow-up observations. There are two main aspects related to the study of seismic isolation components: on the one hand, actively exploring new materials, new processes, and new methods to develop various isolation components; on the other hand, studying how to apply isolation bearings in engineering practice and consider them. Seismic isolation performance and engineering cost issues.

They can be used as separate components or combined. Sometimes they need to be determined according to the requirements of the building function. The supporting isolators mainly bear the load on the upper structure of the building. The damping damper is mainly used to control the isolation bearing. The horizontal deformation does not exceed the limits specified in the specification, mitigating the sloshing of the superstructure of the building and resetting at the end of the earthquake.

Durability for laminated rubber bearings. We can get it through some tests, such as heating and rapid testing. The building is constantly subjected to vertical loads during use, and is also affected by the external environment, such as temperature changes, air oxidation, normal small vibrations, etc. Therefore, the durability of the rubber isolation bearing should be It requires its own materials to have good properties and to ensure the requirements of architectural design.

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