JPH02252815A - Fixing of ground anchor head part - Google Patents

Abstract

PURPOSE:To enable collective arrangement of all nuts in a limited range by arranging plural steps of anchor discs, in which plural tension members composing a ground anchor, are fixed, and fixing required number of tension members at every individual anchor disk. CONSTITUTION:All tension members 1 are inserted on an anchor plate 4, and an lower part anchor disk 31 is placed. Then a nut 2 is threadedly engaged with a screw sleeve 1a of the member 1 fixed to the disc 31, a tension bar 5 is connected and also a ram chair 6 is installed, and the member 1 is hardly fastened with a jack 7 with reaction force taken with the chair 6. Moreover the member 1 is fixed to the disk 31 with the nut 2 clamped. And all tension members 1 are made to penetrate an upper anchor disk 32 and placed on the nut 2, and is fixed to the anchor disk 32 in the same way. Consequently many nuts can be collectively arranged in a limited range.

Description

DETAILED DESCRIPTION OF THE INVENTION (Industrial Application Field) The present invention relates to a method for fixing a ground anchor head, which fixes a ground anchor composed of a plurality of tensile members using a plurality of nuts.

(Problem to be Solved by the Invention) When fixing the tensile material of a ground anchor using a nut, conventionally one nut is used for the ground anchor where the tensile material is assembled into a single piece. , in this fixing method, 1
There is a limit to how much tensile force can be applied because the nut is subject to the tension of the ground anchor as a whole.

This problem can be solved by constructing the ground anchor from multiple tensile members each having low strength and anchoring each tensile member with a nut, but in this case, the number of nuts increases, so the anchoring part The issue is how to place them.

This invention was made by paying attention to the problems in arrangement when using a plurality of nuts, and attempts to propose a fixing method that allows fixing of a plurality of nuts in a small area.

(Means for solving the problem) When fixing multiple tensile members by the above means, all the nuts should be placed within a range commensurate with the diameter of the hole drilled in the ground anchor. However, in the present invention, a plurality of anchor disks to which a plurality of tensile members constituting a ground anchor are fixed are arranged in multiple stages, and the required number of tensile members are fixed to each anchor disk. This makes it possible to collect all nuts within a limited range.

The anchor disk has insertion holes corresponding to the number of tensile members constituting the ground anchor, and all the tensile members whose heads are connected to threaded sleeves are inserted through all the anchor disks.

The lower anchor disk, located at the bottom of the anchor disks, rests on an anchor plate with an opening in the center that is installed on the building frame, and the required number of tensile members are tensioned on this lower anchor disk and fixed there with nuts. be done.

An upper anchor disk rests on the nuts secured to the lower anchor disk, and the remaining tensile material is secured to the upper anchor disk.

(Example) The present invention will be explained below based on the drawings showing one embodiment.

This invention is a method of fixing a plurality of tensile members 1 constituting a ground anchor A to an anchor disk 3 individually with nuts 2, as shown in FIG.

In the embodiment, eight tensile members 1 are divided and fixed into two pieces, an upper anchor disk 3I and a lower anchor disk 3t.

As shown in FIG. 2, all the anchor disks 3+, 3g are provided with insertion holes 3a for the number of tensile members 1 through which threaded sleeves la connected to the heads of the tensile members 1 are inserted. 3. ．． 3. is installed with a fully tensioned threaded sleeve la inserted therethrough as shown in FIG.

The lower anchor disk 3, located at the lowest position, is placed on an anchor plate 4 installed on the main body S, which has an opening through which the entire tension member 1 can pass, and the upper anchor disk 3! rests on a plurality of nuts 2 which anchor some tension material 1 to the lower anchor disk 3I.

The fixing procedure will be explained with reference to FIG.

First, insert the entire tensile material l onto the anchor plate 4 and lower the anchor disk 3. (1).

Next, this lower anchor disk 3. At the same time, the tension bar 5 is connected by screwing the nuts 2 to the threaded sleeves la of the required number of tensile members 1 that are fixed to the tension member 1, and a ram tie aero is installed on the lower anchor disk 31, and this takes up the reaction force and tightens the tension member. 1 becomes nervous due to Jyatsuki 7 (I[)
.

Next, tighten the nut 2 to attach the tension member 1 to the lower anchor disk 3. (Ill).

This procedure is repeated to fix a portion of the entire tensile material 1 to the lower anchor disk 31.

Next, lower anchor disk 3. Place the upper anchor disk 3 □ on the nut 2 to which part of the tensile material 1 has been fixed by inserting all the tensile material 1 (■), and fix the remaining tensile material 1 in the above manner.
The work is completed when it is firmly attached to the upper anchor disk 3□ (Fig. 1).

(Effects of the Invention) This invention is as described above, by inserting a plurality of tensile members constituting a ground anchor, placing a plurality of anchor disks on the anchor disks, and dividing all the tensile members into the valves and fixing them individually. Because of this, it is possible to arrange a large number of nuts within a limited area.

[Brief explanation of drawings]

Figure 1 is a sectional view showing the fixing state of the fixing unit, Figure 2-1
, II are the X-X lines in FIG. 1, respectively. Y-Y line sectional view, Figure 3-! ~■ are cross-sectional views showing the construction procedure of the present invention. A...Ground anchor l...Tension material,
1a...Threaded sleeve, 2...Nut, 31...Lower anchor disk, 38...
...Upper anchor disk, 3a...Insertion hole, 4...Anchor plate, 5...Tensigon bar, 6...Ram chair, 7...
... Jyatsuki, S ... ... skeleton. ■ Tomijime

Claims (1)

[Claims] (1) A method in which a ground anchor consisting of a plurality of tensile members each having a threaded sleeve connected to the head is divided into at least two anchor disks using nuts on the frame. A lower anchor disk having a plurality of insertion holes is placed on an anchor plate with an opening in the center, which is installed on the building frame, with all the tensile members inserted through it, and the required number of tensile members are tensioned on this lower anchor disk. ,
The ground anchor head is fixed to the upper anchor disk by tightening the nut, placing an upper anchor disk having a plurality of insertion holes on the plurality of nuts, tensioning the remaining tensile material, and tightening the nut. How to establish the department.