JPH0710105U - Column base plate fixing device - Google Patents

Abstract

(57) [Summary] [Purpose] When pouring grout material, the degree of filling is high enough to prevent defective filling, and strong fixed strength can be injected. Different grout materials are used depending on the situation at the site. It is an object of the present invention to provide a pedestal base plate fixing device that can be used. [Structure] After the packing 6 is adhered to the lower surface of the base plate 3, the lower grout material 7 is filled in the gap between the packing 6 and the basic concrete 1, and the upper grout material 9 is injected from the upper grout material injection port 10 of the nut 5. Then, the column base base plate fixing device is characterized in that the gap between the anchor bolt 8 and the base plate 3 is filled, and the gap between the anchor bolt 8 and the washer 4 and the gap between the anchor bolt 8 and the nut 5 are filled integrally.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention sandwiches a level mortar previously installed on basic concrete and a mortar to be injected after the base plate is installed, and joins anchor bolts embedded in the basic concrete with nuts and washers. Column base plate fixing device.

[0002]

[Prior art]

 As a conventional device for fixing the steel column base plate, level mortar is formed on the foundation concrete and the anchor bolt is embedded so that its upper end projects. Then insert the base plate from above the anchor bolts, and the washer and nut from above the anchor bolts. After that, there has been conventionally devised a device for manually packing hardened non-shrink mortar into the gap between the upper surface of the base concrete and the lower surface of the base plate, or for pouring the non-shrink mortar into the weir plate at a considerable distance from the periphery of the base plate. Came. Basically, the upper surface of the foundation and the lower surface of the base plate, the gaps between the bolt holes and the anchor bolts are filled with grout material at the same time to solidify or integrally form a protrusion that joins with a flat plate or column, and at the center. A column pedestal with through holes is concretely placed inside the lower end of the steel pipe column, the through hole of the column pedestal and the foundation, a bottom projection is provided, and the base plate and concrete foundation are level mortar. In some cases, the in-plane relative movement is restricted by inserting the grout material that is injected after the base plate is installed. However, these devices tend to cause defective filling, and work cannot be performed unless the gap between the upper surface of the foundation and the lower surface of the base plate is wide. Furthermore, the amount of non-shrink mortar used is large, which is uneconomical. Further, in any of the devices, close contact between the base plate and the base concrete can be expected to some extent, but close contact between the anchor bolt and the base plate cannot be expected. Therefore, it is necessary to develop an apparatus that also considers the material of the grout material.

[0003]

The present invention solves the problems of the conventional column base fixing device, and when pouring grout material, the filling degree is high enough to prevent defective filling, and the fixing strength is strong. It is an object of the present invention to provide a column base plate fixing device that can be injected and can use different grout materials depending on the situation of the site.

[0004]

[Means for Solving the Problems]

 In order to solve this problem, the column base plate fixing device according to claim 1 of the utility model registration claim of the present application, that is, after the packing is adhered to the lower surface of the base plate, the gap is formed between the packing and the foundation concrete. Fill the lower grout material, then inject the upper grout material from the upper grout material inlet of the nut to fill the gap between the anchor bolt and the base plate and the gap between the anchor bolt and washer and the gap between the anchor bolt and nut. This can be achieved by a pedestal base plate fixing device characterized by monolithic filling.

[0005]

【Example】

 Referring to the drawings, an embodiment of the present invention will be described. FIG. 1 is a schematic view of a column base plate fixing device according to the present invention, in which a level mortar 2 is installed beside an anchor bolt 8 embedded on a concrete foundation 1. After inserting the base plate 3, the washer 4, and the nut 5 from the upper part of the anchor bolt 8, a packing 6 is inserted between the foundation concrete 1 and the base plate 3 and adhered to the lower surface of the base plate. Next, the lower grout material 7 fills the lower part surrounded by the basic concrete 1, the level mortar 2, and the packing 6 on the lower surface of the base plate. After the upper grout material is injected through the upper grout material injection hole 10 provided in the nut 5 in advance, after filling the gap between the anchor bolt 8 and the base plate 3 and the gap between the anchor bolt 8 and the washer 4. Then, the gap between the anchor bolt 8 and the nut 5 is also filled and the anchor bolt 8 is fixed.

Since the upper grout material and the lower grout material are separated by the packing, different kinds may be used. Especially, when the anchor bolt and the base plate, the washer, and the nut are required to be fixed firmly, As the grout material, it is preferable to use mortar ground having high yield strength or epoxy resin having high compressive strength, for example, 400 kg / cm ² .

FIG. 2 is an enlarged view of the nut 5, which clearly shows the upper grout injection port 10. The upper grout injection port 10 may be a single port or a plurality of ports, but a plurality of ports are preferable in terms of ease of injection.

FIG. 3 is an enlarged view of the packing 6, which is inserted into the anchor bolt 8 by the insertion cutout 11.

[0009]

[Effect of device]

 With the device according to the present invention, it is possible to inject grout material with high filling degree and strong fixed strength, and different kinds of lower grout material and lower grout material with packing as a boundary may be used, depending on the situation of the site. The effect is that a different grout material can be used each time.

[Brief description of drawings]

FIG. 1 is an overall schematic view of a column base plate fixing device according to the present invention.

FIG. 2 is an enlarged plan view of a nut of the column base plate fixing device according to the present invention.

FIG. 3 is an enlarged front view of the packing of the column base plate fixing device according to the present invention.

[Explanation of symbols]

 1 Foundation concrete 2 Level mortar 3 Base plate 4 Washer 5 Nut 6 Packing 7 Lower grout material 8 Anchor bolt 9 Upper grout material 10 Upper grout material inlet 11 Cutout for insertion

Claims (1)

[Scope of utility model registration request] 1. An anchor bolt sandwiching a level mortar previously provided on a foundation concrete and a mortar to be injected after the base plate is installed and being embedded in the foundation concrete is joined through a nut and a washer. In the column base plate fixing device, after the packing 6 is adhered to the lower surface of the base plate 3, the lower grout material 7 is filled in the gap between the packing 6 and the basic concrete 1, and the upper portion of the nut 5 above the upper grout material injection port 10 is filled. A grout material 9 is injected to fill the gap between the anchor bolt 8 and the base plate 3 and to integrally fill the gap between the anchor bolt 8 and the washer 4 and the gap between the anchor bolt 8 and the nut 5. Column base plate fixing device.