JPS5851236Y2 - Reinforcing device for lifting material - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a reinforcing device for shoring materials in pile shoring, and more particularly to a reinforcing device for shoring materials that protects flanges and webs of shoring materials from excessive compressive force.

To prevent collapse or excessive deformation of the side of the root cut, earth retaining walls such as sheet piles are placed around the outer periphery of the structure, and the earth pressure and water pressure that acts on the earth retaining wall from the side of the root cut during excavation is absorbed by the beam. However, when these struts and struts are erected inside the root cut, the struts and struts are supported because they are interposed between the earth retaining wall and the struts. Compressive force is relatively concentrated on the lumber at the joint with the lumber, and as a result, if excessive soil shogi occurs on the side,
There is a possibility that local failure such as buckling may occur in the flanges and webs of the H-shaped retainer.

Conventionally, as a reinforcing means for preventing the above-mentioned local breakage of the retaining material, a retaining material 3 interposed between the inner surface of the earth retaining wall 1 and the strut 2 as shown in FIGS. 1 and 2 has been used. strut 2
3 and 4, in which the concrete 4 is poured into the upper part surrounded by the opposing web 3a and two parallel pieces (flanges) 3b, 3b at the joint A with the As shown in the figure, at the joint A between the inner surface of the retaining wall 1 and the strut 2 of the retaining material 3 interposed between the struts 2, two parallel pieces (flanges) of the retaining material 3 are opposed. There is a method in which a plurality of steel reinforcing pieces (stiffeners) 5 are inserted between 3 b and 3 b and fixed by welding.

However, the former reinforcement method requires concrete stoppers when placing the concrete 4, and also
, it becomes impossible to place concrete on the lower surface side of the web 3a and the web 3a cannot be sufficiently reinforced, or the joining position of the strut 2 to the bracing material 3 is known in advance. If it were, the concrete 4 could be cast in advance by inverting the material 3, but this work would be extremely troublesome and complicated.

Furthermore, when removing the filler material 3, it is necessary to remove and treat the concrete 4, which takes time and effort.

In addition, the latter method requires special skills such as welding, and the use of steel reinforcement pieces (stiffeners) on-site.
Welding No. 5 is extremely difficult work, and as a result, the reliability of the welded part becomes low.

Furthermore, a gas fuser is required to remove the steel reinforcing piece (stiffener) 5, and the removed steel reinforcement piece (stiffener)
5 is virtually impossible to use, and also has disadvantages such as damaging the lifting material 3 and increasing the wear rate of the lifting material 3.

The present invention solves the above-mentioned problems1.The purpose of this invention is to make it easy to attach to and remove from the restoring material, and to make it reliable and economical. An object of the present invention is to provide a restoring material reinforcing device that can be reinforced.

To this end, the present invention connects the external and internal members with screws so that they can expand and contract, and then inserts this between two parallel pieces (flanges) of the restoring material to reinforce the necessary parts. be.

Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings.

FIG. 5 shows an example of a restoring material reinforcing device according to the present invention, in which 10 indicates a cylindrical steel outer member, and the inner peripheral surface of this outer member 10 has internal threads 11 with a desired pitch. is formed over the entire length, and the female thread 11 is a square thread.

Further, a cylindrical internal member 12 having an outer diameter smaller than the inner diameter is fitted into the outer member 10, and a rectangular male thread 13 is formed on the outer peripheral surface of one end thereof to be screwed into the female thread 11 of the outer member 10. and the outer material 1 of the inner material 12
At the other end protruding outward, there is a resting member 3 as shown in Fig. 6.
A head 14 is provided which abuts against the parallel piece (flange) 3b of the
A plurality of tool insertion holes (blind holes) 16 are formed at desired intervals along the circumferential direction on the outer circumferential surface of the head, and furthermore, on the abutting end surface of the head 14, a strut 2 and a resting member 3 are formed. A hole 15 is formed into which the head of the bolt/nut 6 that connects the two is inserted.

Next, a case will be described in which the flange and web of the upright member are reinforced by the reinforcing device configured as described above.

First, as shown in FIG. 6, the reinforcing device 20, which has been reduced to almost the minimum length, is inserted between the two parallel pieces (flanges) 3b and 3b of the upright member 3 at the joint with the strut 2. The hole 15 of the head 14 is engaged with the coupling bolt nut 6, and the open end of the outer member 10 on the opposite side of the head 14 is raised so that it is located on the same axis as the bolt nut 6, so that the parallel member 3 It is made to face the anti-slip bolt nut 7 attached to the piece (flange) 3b.

In this state, the outer member 10 and the inner member 12 are rotated relative to each other so that the reinforcing device 20 is extended.
0 a to the parallel piece (flange) on the bolt/nut 7 side 3 b
collide with.

Next, insert a tool (not shown) into the hole 16 in the head 14 of the inner member 12.
When the inner member 14 is rotated in the extending direction, the reinforcing device is inserted between the two parallel pieces (flanges) 3b and 3b of the restoring member 3, as shown by reference numeral 20' in FIG. will be done.

In this state, the reinforcing device 20' is attached to the parallel pieces of the upright member 3 (
The earth pressure or water pressure applied to the flange) 3b and the web 3a is shared, and the parallel piece (flange) 3b and the web 3a are reinforced.

Although FIG. 6 shows only two reinforcing devices installed at the joint between the upright member 3 and the strut 2, in reality, four reinforcing devices are installed at two locations above and below the web 3a of the upright member 3. It has been reinforced in places.

In addition, when removing the lifting material 3, the reinforcing device is lifted and the lifting material 3 is removed.
When removing the hook, it can be easily removed by turning the inner member 12 or the outer member 10 in a direction that reduces the overall length of the reinforcing device.

In the above embodiment, a case has been described in which the reinforcing device interposed between the two parallel pieces (flanges) 3b and 3b of the restoring member 3 is prevented from slipping by the bolt nuts 6.7. , but is not limited to this, for example, a protrusion 18 may be provided on the abutment member 17 attached to the head 14 of the inner member 12 and the open end of the outer member 10 shown by the two-dot chain line in FIG.
, 19, respectively, and the protrusions 18, 19 may be raised to engage with bolt holes protruding from the two parallel pieces (flanges) 3b, 3b of the material 3. 1
Permanent magnets may be embedded in the head part 14 of 2 and the abutment member 17 of the outer member 10 so that the permanent magnets can be used to lift up and attract the member 3.

Furthermore, if the head 14 with respect to the inner member 12 and the abutment member 17 with respect to the outer member 10 are made rotatable, friction damage to the restoring member 3 due to rotational operation of the inner member 12 or the outer member 10 can be prevented. can be eliminated.

Further, the male thread 13 of the internal member 12 is not limited to a part as in the embodiment, but may be formed over the entire length of the internal member 12, or a part to be engaged with a tool may be provided on the external member 10. good.

As described above, according to the present invention, the external material and the internal material are elastically connected by a threaded joint, and this is interposed between two parallel pieces (flanges) of the restoring material to reinforce the flange and the web. Because it is made of concrete, it is easy to install and remove it from the restoration material, improving workability.The reinforcement device itself has a large capacity of about 10 tons, so it can be easily attached to and removed from the restoration material. Alternatively, the strength as a reinforcing material is greater than that of a welded reinforcing piece, and the number of reinforcing pieces attached to the upright member can be easily increased or decreased depending on the required strength.

In addition, since special joining methods such as welding are not required,
Even after attaching the ribbed material, it can be easily attached to the bottom side of the web, and since it is expandable and retractable, even if the spacing between the two parallel pieces (flanges) of the ribbed material is different, it will remain the same. It has the advantage that it can be used as a reinforcing device, and that it can also be used for other reinforcing devices.

[BRIEF DESCRIPTION OF THE DRAWINGS] Fig. 1 is a side view showing an example of the conventional method of reinforcing the raised material, Fig. 2 is a plan view thereof, and Fig. 3 is the same (other than the conventional method of reinforcing the raised material). 4 is a plan view thereof, FIG. 5 is a sectional view showing an example of the tummy tuck reinforcing device according to the present invention, and FIG. 6 is a partially cutaway side view showing its use condition. It is a diagram. 1... retaining wall, 2... strut, 3...
・・・Top material, 3a...Web, 3b...
... Parallel piece (flange), 6.7 ... Bolt nut for preventing slippage, 10 ... External material, 11
...Female thread, 12...Internal material, 13.
...Male thread, 14...Head, 15...
... Hole, 16... Tool insertion hole, 17...
...Abutting member, 18.19... Protrusion, 20.2
0'...Reinforcement device.

Claims (1)

[Scope of utility model registration request] It consists of an outer member having a female thread on its inner circumferential surface and an inner member fitted into this outer member and having a male thread on its outer circumferential surface that engages with the female thread, and is expanded and contracted by the relative rotation of the outer and inner members. A lining material reinforcing device characterized in that it is attached between two parallel pieces (flanges) of a lining portion.