What is the principle of earthquake-resistant building? What is it?

The so-called earthquake-free construction method is to prevent the force generated by the earthquake from directly acting on the building, so as to avoid the destruction of the building. Specifically, a special device is added between the building and the foundation to absorb the energy of ground motion, so as to minimize the shaking of the building and prevent the building from being damaged.

Although this idea of building structure has been put forward for a long time, it has not attracted people's attention. Before the Hanshin Earthquake in June, 5438+0995, Japan built two earthquake-free buildings in Kobe. After the Hanshin earthquake, two earthquake-free buildings in Kobe were intact, which proved the superiority of this architectural technology. ?

The earthquake caused the building to shake and collapse because the building was directly fixed on the foundation. When earthquake energy is transferred to a building, it is converted into vibration energy of the building. Columns and walls will be destroyed once they absorb this vibration energy. If the building is separated from the foundation, even if the foundation shakes, the building will not shake. Can this idea be done in reality? The answer is yes.