JPH0598786A - Vibration-absorber of room floor in building - Google Patents

Abstract

PURPOSE:To simplify the structure, facilitate the construction work, and increase the economic merit. CONSTITUTION:The top face is shaped to be of a spherically recessed curvature 1 and a semi-spherical dowel hole 3 is provided on the spherical bottom face 2. And further, a weight 4 is put in the lower part. A semi-spherical dowel 7 protruded on the slab face of a building body B is fitted so as to freely slide in the dowel hole 3 in a rolling metal A like a turnable made so as to rise for itself when knocked over, having a self-restoring force. And a semi-spherical metal 10 suspended from a steel frame 9 receiving the floor plate is supported on the spherically recessed curvature 1 at the top and a spring 12 is set between the rolling metal A and the slab face.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a floor of a building room, such as a computer room, a measurement room, an exhibition room for arts and crafts, and a floor of a building room that is used for floor vibration for the purpose of avoiding horizontal vibration during an earthquake. It relates to seismic isolation devices.

[0002]

2. Description of the Related Art In the conventional seismic isolation device of this type, an oil damper, a leaf spring, a viscous damper, a seismic isolation structure for supporting a floor structure using a coil spring, an air spring, a ball bearing, a laminated rubber, etc. It is configured so that the seismic isolation function is exhibited by combining a shock absorbing device such as a rubber spring.

[0003]

The above-mentioned conventional device has a structure in which a seismic isolation function is exerted by combining a device portion supporting a floor structure and a shock absorber, and the device is expensive,
A high degree of construction accuracy is required for the installation of this device. The present invention has been proposed in view of the above problems of the prior art, and an object of the present invention is to provide a seismic isolation device for an internal floor that has a simplified structure and is easy to construct.

[0004]

In order to achieve the above object, a seismic isolation device for a building inner floor according to the present invention has a top surface formed into a spherical concave curve and a spherical lower bottom surface having a hemispherical shape. The dowel hole in the rolling hardware having the dowel hole and the weight at the bottom is slidably fitted to the hemispherical dowel projecting on the slab surface of the building frame, and the top spherical recess is provided. The curved surface supports a hemispherical metal object projectingly provided on the lower surface of the floor support frame in a slidable manner, and an ammunition machine is interposed between the rolling hardware and the slab.

[0005]

According to the present invention, as described above, the floor structure support has a top surface formed into a spherical concave curved surface, and a weight is provided below the main body having a hemispherical dowel hole in the spherical lower bottom surface. Also, using a rolling hardware having a certain degree of resilience by itself, a lower hinge structure in which the hemispherical dowel protruding from the slab surface of the building body is slidably fitted in the hemispherical dowel hole of the hardware. And the top spherical surface slidably supports a hemispherical metal object protruding from the lower surface of the floor support frame, and the double hinge mechanism with the upper hinge mechanism allows the floor support frame to freely move in any direction against horizontal vibration. While being movable, the restoring force of the rolling hardware itself is exerted, and the restoring force is amplified by the ammunition inserted between the rolling hardware and the slab to exert the seismic isolation function.

[0006]

The present invention will be described below with reference to the illustrated embodiments. A is a steel rolling hardware, which is formed on the top spherical concave curved surface 1 as shown in FIG. 4, and is made of cast iron at the bottom of a hollow conical main body having a spherical lower bottom surface 2 provided with a hemispherical dowel hole 3. The weight 4 is provided, and the metal itself rises up and has resilience in all directions as shown in FIG. In the figure, 5 is a hollow part of the rolling hardware A.

The rolling hardware A is disposed in a recess provided in the building frame B, and is slidably mounted on a hemispherical dowel 7 projecting from a surface plate 6 disposed on the slab surface at the bottom of the recess. A hemispherical metal fitting 1 that is fitted and hung vertically from the floor plate steel frame 9 that constitutes the support frame of the floor panel 8 on the top spherical concave curved surface 1.
0 is slidably supported. The rolling hardware A
Horizontal support arms 11 are provided so as to project in two directions orthogonal to each other, and an ammunition 12 such as a coil spring is interposed between each of the support arms 11 and the surface plate 6.

An expansion joint 13 is provided between the periphery of the seismic isolation floor device constructed as described above and the building frame B. In the figure, reference numeral 14 is a sliding plate, 15 is a bullet stopper metal fitting, and 16 is an anchor bolt for fixing the surface plate 6. Since the illustrated embodiment is configured as described above, a lower hinge mechanism configured by the fitting portion of the hemispherical dowel hole 3 of the rolling hardware A and the hemispherical dowel 7 of the surface plate 6, Top spherical concave curved surface 1 of the rolling hardware A
By the double hinge mechanism with the upper hinge mechanism constituted by the hemispherical hardware 10 supporting portion of the floor plate steel frame 9 at, the floor support mechanism can move in any direction against horizontal vibration at the time of earthquake and the rolling hardware A The restoring force of itself is exerted, the restoring force is amplified by the ammunition 12, the horizontal vibration of the floor is reduced, and the seismic isolation function is exerted.

[0009]

As described above, the present invention uses, as the support portion of the floor structure, a rolling metal fitting which has a resilience to horizontal vibration by itself, which utilizes the principle of the rising and rising minister,
It is designed to reduce the horizontal vibration of the floor inside the building floor during an earthquake by amplifying the restoring force with an ammunition installed between the same hardware and the slab of the building skeleton. It is robust, requires no maintenance, and can reduce costs compared to conventional devices.

[Brief description of drawings]

FIG. 1 is a vertical cross-sectional view showing an embodiment of a seismic isolation device for an indoor floor of a building according to the present invention.

FIG. 2 is a plan view of FIG.

FIG. 3 is a plan view showing an arrangement of rolling hardware.

FIG. 4 is a vertical cross-sectional view of a rolling hardware.

FIG. 5 is an explanatory diagram showing the restoring performance of the rolling hardware.

[Explanation of symbols]

 A Rolling hardware B Building frame 1 Top spherical concave curved surface 2 Spherical bottom surface 3 Hemispherical dowel hole 4 Weights 6 Surface plate 7 Hemispherical dowel 9 Floor plate steel frame 10 Hemispherical hardware 11 Horizontal support arm 12 Ammo

Claims (1)

[Claims] 1. A rolling hardware having a top surface formed in a spherically concave curved shape, a spherical lower bottom surface provided with a hemispherical dowel hole, and a weight provided at a lower portion of the dowel hole in a building. The rolling metal fitting is slidably fitted to the hemispherical dowel protruding from the slab surface of the frame, and the hemispherical metal fitting projecting from the lower surface of the floor support frame is slidably supported on the top spherical concave curved surface. A seismic isolation device for the indoor floor of the building, characterized in that an ammunition is inserted between the slab and the slab.