JP3093003U - Vibration control device attached to anchor bolt - Google Patents

Abstract

(57) [Summary] [Problem] Horizontal and vertical vibrations that occur during an earthquake
The impact is too much to be transmitted directly from the anchor bolt to the base. Further, since the current seismic isolation method is difficult to use at a high price for ordinary houses and the like, there is a demand for an inexpensive, easy-to-use and cost-effective one. SOLUTION: An elastic body insertion hole 15 is provided between an anchor bolt 2 and a base 5, into which an elastic body having a vibration damping property is inserted, and an insertion part 1a and a flange-shaped part 1b are provided therein. The insertion part 1a of the elastic body 1 having the anchor bolt insertion hole 20 penetrated from above the center is inserted, and the flange part 1b is pressed by the washer 4 and fixed by the nut 3.

Description

[Detailed description of the device]

[0001]

[Technical field to which the device belongs]

  The present invention relates to an anchor bolt that is embedded in the foundation of a building. It is related to the vibration transmitted to the base fixed by.

[0002]

[Prior art]

  Conventionally, seismic isolation for superstructures, etc. is performed by the slip method using rollers or spheres A large number of elastic support type structures using a bearing have been developed. Steel for laminated rubber bearings Plates and rubbers alternately stacked, high damping rubbers with lead plugs internally, In addition, as disclosed in Japanese Patent Laid-Open No. Hei 2-200925, relative vibration in a horizontal direction relative to a laminated rubber bearing is used. There is a combination of elasto-plastic dampers for absorbing movement. In addition, utility model registration In the official bulletin, the actual bolts with anchor bolts were used as a base isolation and vibration control structure. There are No. 9 and Noboru 3034049.

[0003]

[Problems to be solved by the device]

  Of the conventional technologies, the seismic isolation method currently used has a high proportion of elastic support methods. Some of the laminated rubber bearings have already been put to practical use, but They are suitable for heavy buildings, and are required for installation in lightweight structures such as ordinary houses. It is not suitable in terms of area and price. Anchor bolts with limited steel thickness Then, there is a drawback in that even if it is a supportive structure, it reacts to a minute shake.

[0004]   Another drawback of current anchor bolts is that when horizontal vibrations are generated due to an earthquake, The inner bolt and the base collide directly with each other and a strong shock is transmitted to the upper part. It The vertical vibration of the earthquake is smaller than the horizontal motion, but the destructive force is great. Current anchor There is a problem that Bolt does not support that. General housing in terms of price Construction needs to be cheap, easy to use and cost effective.

[0005]

[Means for Solving the Problems]   In order to achieve the above object, the vibration control device of the present invention comprises an anchor bolt and a base. An elastic body insertion hole for inserting an elastic body having a vibration control property is provided between the insertion section and the insertion section. It has a collar-shaped part, and an anchor bolt insertion hole is penetrated from the center of the diameter to the bottom. Insert the elastic body into the insertion part, press the collar-shaped part with a washer, and fix it with a nut. It is configured as follows.

[0006]   And, in order to further attenuate the horizontal vibration at the time of the earthquake, the base insertion part of the elastic body is It is desirable to provide a suitable convex portion and concave portion.

[0007]   In addition, the thickness of the collar part, the area that hits the base, and the surface that hits the base of the insertion part. A wider product is preferable for vertical movement and horizontal movement.

[0008]   Also, although not included in the present invention, is it not a foundation to put a cushioning material between the foundation and the base? It is preferable because it absorbs the vibrations from those.

[0009]   Further, the collar-shaped portion of the elastic body and the base insertion portion may be molded separately. Because of that It is possible to change the material of the elastic body of the rib-shaped part and the base insertion part.

[0010]   When inserting the elastic body, apply adhesive to the anchor bolt insertion hole and The anchor bolt and the elastic body may be bonded. If it is made separately, the base insertion part is It may be bonded before mounting the table.

[0011]

[Embodiment of device]

  An embodiment of the invention will be described with reference to the drawings on the basis of examples, as shown in FIG. In the embodiment, the elastic body insertion hole 15 for inserting the elastic body having the vibration control property is fixed to the foundation 10. Installed on the base 5 around the fixed anchor bolt 2 in a predetermined size, and there It is provided with an insertion portion 1a and a collar-shaped portion 1b, and the anchor bolt insertion hole 20 is penetrated through the center portion thereof. Insert the insertion portion 1a of the elastic body 1 that has been installed, press the collar-shaped portion 1b with the washer 4, and press the nut 3 It is fixed at.

[0012]   In this case, the base 5 is made of wood, which is not included in the present invention as described above. Whether it is steel frame or reinforced concrete, the cushioning material 6 is used as the foundation 1 If it is sandwiched between 0 and the base 5, vibration from the foundation can be suppressed considerably.

[0013]   For the elastic body 1, for example, neoprene rubber or the like is selected. It is determined by the structure of the object, the material of the base, or the thickness.

[0014]   In addition, since the drawing is a vertical sectional view in FIG. 1, a table showing whether the elastic body 1 is a cylindrical type or a prismatic type is shown. Although not shown, if it is made with a cylindrical type and with a square prism type of regular square Comparing the two, the same effect can be obtained from any direction with respect to the horizontal shake for a cylinder. The same reaction occurs, but in the case of a prism, the input angle is determined by the difference in the length of one side and the length of the diagonal line. Due to the difference in the deformation method, It can be understood that the cylindrical type is far more preferable except in such cases.

[0015]   FIG. 2A is a perspective view in which the main body of the elastic body 1 is formed in a columnar shape. Ground at the bottom The insertion part 1a receives horizontal motion pressure at the time of earthquake, and the upper part receives vertical motion from the base. A collar-shaped collar portion 1b with an anchor bolt at the center of the diameter. Anchor bolt It has an insertion hole (20). (B) shows that the elastic body 1 is attached to the anchor bolt 2. FIG. The same elastic body 1 as shown in FIG. 1 is made in one piece It is a thing. All built-in type are attached to the anchor bolt 2 after the construction. Therefore, if you want to attach it, apply an adhesive when attaching it.

[0016]   FIG. 3 shows a convex portion 7 and a concave portion 8 formed in the insertion portion 1a shown in FIGS. It was made. The round protrusions in the vertical sectional view in (a) may be The shape may be formed along the circumference like the shape of). The purpose is the impact of horizontal vibration of an earthquake It is in the dispersion and creates a space between the base 5 and the recess 8 of the insertion part 1a to achieve it. The main purpose is to Therefore, regardless of the type of unevenness. Area ratio of convex portion 7 and concave portion 8 The rate and the depth of the recesses are determined by the hardness of the elastic body 1, the thickness of the diameter, and the material of the base 5. It

[0017]   FIG. 4 shows the insertion of the elastic body 1 in which the insertion portion 1a and the collar-shaped portion 1b are separately molded. A part 1A and a collar part 1B. The anchor bolt insertion hole 20 has an insertion portion 1A and a collar portion 1 It penetrates in the center of the diameter of B. It is used when you want to make the elastic material and hardness different.

[0018]

[Effect of device]

  Since the present invention is configured as described above, it has the following features. Produce an effect.

[0019]   With the structure according to claim 1, the insertion portion of the elastic body is formed from the foundation to the anchor. -The horizontal vibration of the earthquake transmitted to the bolt causes the anchor bolt and the base to directly collide. And, the collar-shaped part can reduce the vibration of the vertical motion of the earthquake. Depending on it It is possible to respond to complex shaking with a synergistic effect.

[0020]   Further, as in claim 2, by providing the concave portion and the convex portion in the insertion portion of the elastic body, It is possible to further reduce the shock caused by the horizontal vibration of the earthquake.

[0021]   Further, as in claim 3, by separately molding the insertion portion of the elastic body and the collar-shaped portion, Therefore, the material of the insert part and the collar part can be different. This is the degree of freedom of vertical movement of the earthquake To avoid triggering rocking vibration that occurs when there is too much, only the collar part When using a hard elastic body or wanting to put the insertion part on the anchor bolt from the beginning It is convenient for cases. Also, it is possible to use only the insertion part and only the collar part.

[Brief description of drawings]

FIG. 1 is a vertical cross-sectional view showing a state where an elastic body is attached to an elastic body insertion hole.

FIG. 2 is a perspective view of the elastic body main body alone and a state in which the main body is attached to an anchor bolt.

FIG. 3 is a longitudinal sectional view showing one type of uneven portion of the base insertion portion and a perspective view showing one type.

FIG. 4 is a perspective view in which a base insertion portion and a collar-shaped portion are separately molded.

[Explanation of symbols]

1 elastic body 1a, 1A insertion part 1b, 1B collar part 2 Anchor bolt 3 nuts 4 washers 5 foundation 6 buffer goods 7 convex 8 recess 10 basics 15 Elastic body insertion hole 20 Anchor bolt insertion hole

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[Procedure amendment]

[Submission date] October 28, 2002 (2002.10.
28)

[Procedure Amendment 1]

[Document name to be corrected] Drawing

[Name of item to be corrected] Figure 1

[Correction method] Change

[Correction content]

[Figure 1]

[Procedure Amendment 2]

[Document name to be corrected] Drawing

[Name of item to be corrected] Figure 3

[Correction method] Change

[Correction content]

[Figure 3]

Claims (3)

[Scope of utility model registration request] 1. An elastic body insertion hole (15) for inserting an elastic body having a vibration control property is provided between the anchor bolt (2) and the base (5), and the insertion portion (1a) and the collar are provided therein. Form (1
b), the insertion portion (1a) of the elastic body (1) having the diameter and having an anchor bolt insertion hole (20) penetrating from the center to the bottom is inserted, and the collar-shaped portion (1b) is a washer. A vibration control device to be attached to an anchor bolt, which is used by pressing with (4) and fixing with a nut (3). 2. The vibration control device according to claim 1, wherein a convex portion (7) and a concave portion (8) are formed in the insertion portion (1a) of the elastic body (1). 3. The vibration control device according to claim 1, wherein the insertion portion (1A) and the collar-shaped portion (1B) of the elastic body (1) are individually molded.