WO2020166101A1

WO2020166101A1 - Stabilizing structure for temporary structures, bridging installation method, and connection fitting for bridging

Info

Publication number: WO2020166101A1
Application number: PCT/JP2019/025137
Authority: WO
Inventors: 正勝関山; 雅一遠藤; 康宏幡野
Original assignee: 日建リース工業株式会社
Priority date: 2019-02-13
Filing date: 2019-06-25
Publication date: 2020-08-20
Also published as: TWI816976B; JP7023249B2; JP2020133126A; TW202030409A

Abstract

[Problem] To allow bridging to be mounted to a jack base. [Solution] A connection fitting B, as a separate member, is attached to a rotary body 30 for adjusting the height of a vertical member D in a jack base A, and bridging C is provided via the connection fitting B.

Description

Stabilization structure of temporary structure, installation method of root entrapment, and connecting bracket for root ensemble

The present invention relates to a stabilizing structure or the like in a temporary structure such as scaffolding or support used at a construction site or the like. Relates to the invention.

In the vicinity of the installation surface of temporary structures such as scaffolds and supports, it is common to provide roots that connect vertical materials such as struts and building materials over multiple spans.
The roots have an effect of dispersing a horizontal force such as a wind load generated in the vertical material to other vertical materials, and an effect of preventing uneven settlement of the vertical material.
The roots are required to be installed at the lowest possible position, and the following modes are known as the modes of connection with the vertical members.

[Conventional mode 1]
As shown in FIG. 6, a root member d is attached to a vertical member b attached to the jack base a through a separate orthogonal clamp c.
[Conventional mode 2]
As shown in Patent Document 1 below, an insert piece is provided at the end of the root, and a receiving portion for the insert piece is formed on the building side.

JP-A-2002-47793

However, the conventional installation method of roots has at least one of the problems described below.
(1) The reduction of the installation height of the root entrainment is limited to near the lower end of the vertical member.
(2) Even if the rotating body of the jack base naturally loosens and rotates downward due to external factors such as contact with a temporary structure or vibration due to an earthquake or wind, the root swelling is vertical. Since the height of the material is kept constant, the vertical material and the rotating body are separated from each other, and the load of the temporary structure is not transmitted to the jack base.
(3) When a panel material is attached separately to the vertical material to use the temporary structure as a frame of the temporary enclosure, the root clamped on the vertical material and the handle of the rotating body interfere with the panel material. I have a concern.

Therefore, at least one of the objects of the present invention is to provide a means for attaching a root to the jack base.

The first invention of the present application made to solve the above problems is a stabilizing structure for a temporary structure such as a scaffold or a supporting structure, which includes a bottom part in contact with an installation surface, and a temporary structure extending upward from the bottom part. A plurality of jack bases, which has at least a screw rod to which a vertical member can be attached, and a rotating body that is screwed onto the screw rod and can move up and down, and a connecting fitting that can be attached to each jack base, It is characterized by comprising at least a root clamp arranged via the connecting fitting.
A second invention of the present application is the first invention, wherein the rotating body has recesses formed at least at one or more locations on a side circumference of the rotating body, and the connecting fitting is a side circumference of the rotating body. It is characterized by having at least a mounting portion which can be engaged with the concave portion while sandwiching, and a gripping portion which is provided on the back side of the mounting portion and which can grip the root swell.
Further, a third invention of the present application is a method of installing roots in a temporary structure such as a scaffold or a shoring structure, which comprises a bottom part which is in contact with the installation surface and a vertical member which extends upward from the bottom part to form the temporary structure. At least having a screw rod to which can be attached and a rotating body that is screwed into the screw rod and can move up and down, and a step of installing a jack base, and screwing the rotating body using a handle of a separate member. Adjusting the rotating body to a predetermined position, removing the handle from the rotating body, and attaching a connecting metal fitting to the rotating body, arranging roots on the plurality of rotating bodies via the connecting metal fittings. And at least the step of performing.
Further, a fourth invention of the present application is characterized in that, in the third invention, in the rotating body, the attachment mechanism of the handle and the attachment mechanism of the coupling fitting are combined.
Further, a fifth invention of the present application is a connecting metal fitting for root entrainment, which is attached to a rotating body of a jack base used for temporary structures such as scaffolding and support work, and can be attached while sandwiching the side circumference of the rotating body. A mounting portion and at least a gripping portion for gripping the root sill, and the mounting portion extends so as to sandwich the side circumference of the rotating body, and a pair of arm portions and one arm portion. At least a protrusion protruding inward from the arm and a bolt screwed inwardly from the other arm portion are provided, and the protrusion can be fixed by sandwiching the rotating body from the side circumference. It is characterized by having done.

According to the present invention, at least one of the effects described below can be obtained.
(1) Since the root sill attached to the vertical member can be installed at a lower position, it contributes to the stabilization of the temporary structure.
(2) Even if the rotating body loosens and tries to rotate naturally for some reason after construction of the temporary structure, the rotation operation is restricted by the root gripped by the connecting metal fittings. It is possible to prevent positional deviation of the rotating body. As a result, since the position (height) of the rotating body is maintained, the contact between the vertical member and the rotating body is always maintained, and the load of the temporary structure can be reliably transmitted to the jack base. ..
(3) Since the handle used for the rotating operation of the rotating body is removed from the rotating body of the jack base and the root base is attached to the jack base itself, the interference elements of other attaching members with respect to the vertical member are reduced. The degree of freedom in designing temporary structures is improved.

The schematic perspective view of the temporary structure which concerns on 1st Example. The schematic perspective view of a jack base and a connection metal fitting. The figure which shows an example of the installation procedure of root entrapment. The figure for demonstrating an effect. The figure which shows the jack base which concerns on 2nd Example. The figure which shows the installation aspect of the conventional root entrapment.

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

<1> Overall configuration (Fig. 1)
FIG. 1 shows a construction state of a temporary structure according to the present invention.
The temporary structure according to the present invention includes a jack base A arranged on the installation surface of the temporary structure, a connecting fitting B attached to the jack base A, and a root member arranged between the jack bases A via the connecting fitting B. And at least C.
Further, a vertical material D having a longitudinal direction in the vertical direction, such as building materials and columns that form a temporary structure, is attached to the jack base A from above.

<2> Jack base (Fig. 2)
The jack base A is a member arranged at the bottom of the temporary structure.
The jack base A is usually a bottom portion 10 in contact with the installation surface, a screw rod 20 extending upward from the bottom portion 10, and a vertical member D screwed into the screw rod 20 and inserted into the screw rod 20 from below. It is configured to include a rotating body 30 capable of adjusting a separation distance between the bottom portion 10 and the lower end of the vertical member D while supporting the same.
Of these, the details of the rotating body 30 will be described below.

<3> Rotating body (Fig. 2)
The rotating body 30 is a member for adjusting the separation distance between the bottom portion 10 and the lower end of the vertical member D.
When the installation surface is on a sloping ground or has a large amount of unevenness, the work of adjusting the position of the rotating body 30 is performed in order to keep the temporary structure provided above the jack base A horizontal.
In the conventional rotating body 30, in order to perform the screwing operation on the threaded rod 20, it is general that a handle portion protruding from the side peripheral surface is generally provided. It is configured so that it can be freely attached and detached without permanently installing parts.
In this embodiment, the concave portion 31 is formed on the side peripheral surface of the rotating body 30.
Using the handle E, which is a separate member that can be locked in the recess 31, the rotating body 30 can be screwed.

<3.1> Form of Recesses In the present invention, the number and position of the recesses 31 are not particularly limited.
In this embodiment, the recesses 31 are arranged at four positions on the side peripheral surface of the rotating body 30 at intervals of 90°. This is to improve the work efficiency by performing the work while exchanging the concave portion 31 for locking the handle E when performing the screwing operation using the handle E.

<3.2> Dual Use of Recess The above-mentioned recess 31 may be configured to be usable also for attachment of the connecting fitting B described later.
Therefore, the larger the number of the recesses 31 is, the more flexibly the longitudinal direction of the root claw C with respect to the attachment position of the coupling fitting B, that is, the position of the rotating body 30 can be set. However, in the jack base A, since the pitch of the vertical movement for one rotation of the rotating body 30 is small, if the concave portions 31 are provided at four positions of 90° each as in the present embodiment, the installation direction of the root claw C is defined. When doing so, there is almost no trouble such as the jack base A being separated from the installation surface.

<4> Connecting bracket (Fig. 2)
The connecting metal fitting B is a member for mounting the root base C at a position lower than the vertical member D by being mounted on the jack base A.
In the present embodiment, the connecting fitting B is configured to have a mounting portion 40 that can be mounted on the rotating body 30 of the jack base A and a grip portion 50 that can grip the root claw C.

<5> Mounting part (Fig. 2)
The attachment portion 40 is a portion for attaching to the rotating body 30 of the jack base A.
In the present embodiment, the mounting portion 40 is configured by a member having a substantially U-shape having a pair of arm portions 41 arranged to face each other in a separated state in a plan view.
The separation distance of the pair of arm portions 41 can be configured to be larger than the diameter of the rotating body 30 described above, and the side peripheral surface of the rotating body 30 can be positioned so as to be narrowed by the pair of arm portions 41.
The one arm 41 is provided with a protrusion 42 that projects inward, and the other arm 41 is provided with a bolt 43 that is screwed so as to adjust the inward protruding length.
By engaging the projections 42 and the bolts 43 with the two recesses 31 provided at the rotating body 30 at intervals of approximately 180°, the connecting fitting B can be fixed to the rotating body 30.

<6> Gripping part (Fig. 2)
The gripping portion 50 is a member for gripping the root claw C.
The grip portion 50 may be in any form as long as the root member C arranged so as to be substantially orthogonal to the vertical member D or the screw rod 20 can be attached.
In the present embodiment, the grip portion 50 uses a single pipe clamp fixed to the back side of the mounting portion 40.

<7> Usage (Fig. 3)
With reference to the drawings, a procedure for installing the root entrainment C in installing the temporary structure will be described.
(1) Installation of jack base (Fig. 3(a))
First, the jack base A is arranged at a predetermined interval.
(2) Position adjustment of the rotating body (Fig. 3(b))
The handle E is locked in the recess 31 provided in the rotating body 30 to perform a rotating operation, and the height of each rotating body 30 is adjusted.
(3) Installation of connecting metal fittings (Fig. 3(c))
The rotating body 30 is removed from the handle E, the connecting fitting B is fitted into the recess 31 of the rotating body 30, and the bolts 43 are fastened and fixed.
(4) Installation of roots (Fig. 3(d))
Attach the root clamp C via each connecting bracket B.

<7.1> Position Adjustment of Rotating Body Using Root Entrainment In the step (2) described above, it is not necessary to adjust the height of all the rotating bodies 30. Then, referring to the position on the open end side of the root entrainment C attached to the part of the rotating body 30 in the step (4), the position of the remaining rotating body 30 is adjusted and the connecting fitting B is installed. May be.

<8> Action/effect (Fig. 4)
The effect of the temporary structure to which the present invention is applied will be described with reference to the drawings.
(1) Stabilization of temporary structures (Fig. 4(a))
Since the root gullet C can be installed at a position lower than that of the conventional vertical member D, it contributes to the stabilization of the temporary structure.
(2) Restraint of the rotating body 30 and maintenance of load transferability (Fig. 4(a))
Each root gullet C is installed in such a manner that it is connected to at least three rotating bodies 30 (jack base A). Therefore, even if the rotating body 30 loosens and tries to rotate naturally due to an external factor such as contact with a temporary structure or vibration due to an earthquake or wind, the rotation is caused by the root claw C held by the connecting fitting B. Since the operation is restricted, it is possible to prevent the positional displacement of the rotating body 30 after the temporary structure is constructed.
Furthermore, since the position (height) of the rotating body 30 can be maintained, the contact between the vertical member D and the rotating member 30 is always maintained, so that the vertical member D and the rotating member 30 are separated from each other. The load transferability of the entire temporary structure can be maintained without the problem that the load of the temporary structure is not transferred to the jack base A due to the storage.
(3) Prevention of interference when disposing another member on the vertical member D (Fig. 4(b))
When a panel material or the like is separately attached to the vertical material D in order to use the temporary structure as a temporary enclosure, there is a concern that the root claw C that was conventionally clamped on the vertical material D and the handle E portion of the rotating body 30 interfere with each other. However, since the handle E was removed from the rotating body 30 of the jack base A and the root claw C was attached to the jack base A, the interference element of the attachment portion 40 material with respect to the vertical material D was reduced, and the temporary installation The degree of freedom in designing structures is improved.

Another embodiment of the rotating body of the jack base according to the present invention will be described.
As shown in FIG. 5, in the jack base A according to the present embodiment, female screw portions 311 are formed in the recesses 31 provided at four positions on the side circumferential surface of the rotating body 30 at equal intervals, and the female screw portion 311 is formed. The handle E provided with the male screw portion 60 that can be screwed in is provided at two places to form the same appearance as the conventional rotating body 30.
In this case, the handle E used in the first embodiment is unnecessary.

A jack base 10 bottom portion 20 screw rod 30 rotating body 31 recessed portion 311 female screw portion B connecting metal fitting 40 mounting portion 41 arm portion 42 protrusion 43 bolt 50 gripping portion C root gutter D vertical material E handle 60 male screw portion a jack base b vertical Material c Orthogonal clamp d Root entrapment

Claims

Stabilization structure for temporary structures such as scaffolding and support work,
At least a bottom portion that contacts the installation surface, a screw rod that extends upward from the bottom portion and that can attach a vertical member that constitutes the temporary structure, and a rotating body that can be vertically moved by being screwed into the screw rod, Multiple jack bases,
With connecting metal fittings that can be attached to each jack base,
Arranged via the connecting metal fittings, with roots,
At least
Stabilization structure for temporary structures.
The rotating body is
At least one or more locations are formed on the side circumference of the rotating body to form recesses,
The connecting fitting is
While sandwiching the side circumference of the rotating body, a mounting portion that can be engaged with the recess,
A grip portion that is provided on the back side of the mounting portion and that can grip the root ridge,
At least,
The stabilizing structure for a temporary structure according to claim 1.
A method for installing roots in temporary structures such as scaffolding and support,
A jack having at least a bottom portion in contact with the installation surface, a screw rod extending upwardly from the bottom portion to which a vertical member forming a temporary structure can be attached, and a rotating body screwed to the screw rod and vertically movable. The process of installing the base,
Adjusting the rotating body to a predetermined position by screwing the rotating body using a handle of another member;
A step of removing the handle from the rotating body and attaching a connecting fitting to the rotating body;
A step of arranging roots on a plurality of rotating bodies through connecting metal fittings;
Including at least
How to install roots in temporary structures.
In the rotating body, the attachment mechanism of the handle and the attachment mechanism of the connecting fitting are also used.
The method for installing roots in the temporary structure according to claim 3.
It is a connecting metal fitting for roots attached to the rotating body of the jack base used for temporary structures such as scaffolding and support work,
A mounting portion that can be mounted while sandwiching the side circumference of the rotating body,
At least a gripping part for gripping the root gully,
The mounting portion is
A pair of arm portions extending so as to sandwich the side circumference of the rotating body,
A protrusion protruding inward from one arm,
At least a bolt, which is screwed so as to project inward from the other arm,
By the projection and the bolt, the rotating body can be sandwiched and fixed from the side circumference,
Connecting metal fittings for root entrapment.