JPH01118567U - - Google Patents

Description

[Brief explanation of the drawing]

Figure 1 is a schematic plan view showing the entrance/exit part of the seismic isolation building, Figure 2 is a sectional view taken along the arrow line in Figure 1, and Figure 3 is an enlarged cross-section of the cross section in Figure 2. Figure 4 shows the third model with a different shape of the passing material.
A sectional view similar to the one shown in the figure, FIG. 5 is a sectional view illustrating a conventional seismically isolated building entrance. 1... Laminated rubber bearing, 2... Pedestal, 3... Lower structure, 4... Upper structure, 5... External road surface, 6...
Passing floor, 7... Tip surface, 8... Grating, 9
... Sliding material, 10 ... Retaining wall, 12 ... External road surface,
14... Floor extension part, 16... End surface, 18... Passing material, 20... Entrance/exit, 22... Passing material, 24...
...floor extension.

Claims (1)

[Scope of utility model registration request] It consists of a lower structure anchored to the ground and an upper structure built on the lower structure via a seismic isolation device.During an earthquake, the upper structure and lower structure have relative vibration characteristics that differ in their natural periods of vibration. At the entrance/exit of a seismically isolated building, the floor surface related to the entrance/exit of the seismically isolated building is slightly extended outward, and an interval corresponding to the expected maximum horizontal amplitude is provided between the tip of the floor extension and the external road surface. An inverted trapezoid-shaped wood or hard plastic bridge is interposed between these spaces with a continuous flat surface, and the end surface of the extension part or the end where the external road surface and the bridge are in contact. An entrance/exit structure for a seismically isolated building where the surface is formed at almost the same angle of inclination as the end face of the bridge.