All domestic and foreign use of stacked rubber bearings seismic isolation of the house, after a number of strong earthquakes, seismic isolation effect is good, seismic performance is remarkable.
Example 1: the 1994 Los Angeles earthquake of 6.7, 31 hospitals were severely damaged, 9 hospitals were evacuated for localized damage, USC University Hospital for the underground 1 layer, the ground 7 layers of seismic isolation structure, the earthquake has not been damaged at all, there is no vase fall, the hospital around the building is generally seriously damaged, the hospital house is not even aware of the occurrence of strong earthquakes, the people even did not realize. All kinds of equipment was not damaged, the hospital function was maintained, and became a disaster relief center, which played a very important role in the post-earthquake emergency relief. And 1 kilometer away from the Los Angeles Central Hospital caused losses of 389 million U.S. dollars.
Example 2: In the 1995 Hanshin 7.2 magnitude earthquake in Japan, there were 2 buildings with seismic isolation structures that achieved seismic observation records. The West Post Building, with a floor area of 46,000 square meters and 6 floors, is the largest seismically isolated building in Japan. The maximum acceleration in the horizontal direction on the 1st floor of the ground was observed in the seismic record to be only 1/3-1/4 of that of the foundation. The building was intact after the earthquake, with no damage to its equipment, and played a large role in disaster relief, giving full play to the effect of the seismic isolation. the Matsumura-Gumi Research Institute Building is a 3-story seismic isolation building, and the building and the adjoining administration building are 3-story non-seismically isolate buildings, both of which received seismic observation records. The maximum acceleration values on the 1st floor of the seismically isolated building decreased compared to the foundation, while the maximum acceleration on the roof of the non-seismically isolated building was 2-5 times greater than that of the seismically isolated building.
Example 3: In 1994, a 7.3-magnitude earthquake in Jiji, Taiwan, with an intensity of 6 degrees in Shantou City, shook the houses of all kinds so much that the residents panicked and the water in the buckets splashed out about 1/3 of the way, while those on the isolated building on Linghai Road did not feel any tremor and did not know that the earthquake had occurred.
Example 4: 1995 Yunnan Wuding 6.5 magnitude earthquake, the earthquake occurred, Dali strong tremor, while the rubber cushion seismic isolation building - Dali State Traffic Command Center building in the majority of people do not feel, do not know that the earthquake occurred.
Example 5: In 1996, a strong earthquake of magnitude 7 occurred in Lijiang, Yunnan Province. The dormitory building of the State Administration of Taxation in Xichang City is a six-story seismic isolation building. Employees living upstairs, just feel a slight shaking, while the neighboring building of a conventional seismic building is only four floors high, the people living upstairs shook very badly, panicked and fled outside.
Example 6: Lushan County People's Hospital, which survived the 4-20 Lushan earthquake, has become the spokesman for the "building strong", and its secret lies in the foundation part of the "spring buffer". The main building of Lushan County People's Hospital, which was intact and less damaged after the earthquake, has attracted attention. In other parts of Sichuan, there are also a number of seismic isolation buildings.