JP2016050397A - Temporary scaffolding unit and temporary pier - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a temporary scaffolding unit and a temporary pier capable of rationally securing a passageway.SOLUTION: A temporary pier 1 includes a main girder 2, a lining plate 3 laid on a top surface of the main girder 2, a base cover member 4 laid on the top surface of the main girder 2 along an edge part of the lining plate 3, and a temporary scaffolding unit 5 fitted on the base covering member 4 and extending laterally from the main girder 2. The temporary scaffolding unit 5 includes a plurality of brackets 51 slidable along a longitudinal direction of the base covering member 4, a scaffold board 52 laid on the plurality of brackets 51, and a handrail 53 installed horizontally at an edge part of the plurality of brackets 51.SELECTED DRAWING: Figure 2

Description

  The present invention relates to a temporary scaffold unit and a temporary pier.

A temporary pier of a temporary structure is generally designed to have a width of about 6 to 7 m.
The temporary pier construction method includes a delivery method in which the temporary pier is extended from one shore along the opposite shore.

  In the sending-out method, construction is performed with a rough terrain crane, a crawler crane, etc. installed on the existing part of the temporary pier. However, in a narrow temporary pier, it may not be possible to secure a work path beside the rough terrain crane.

Therefore, in order to secure a work passage in a narrow temporary pier, etc., for example, a method of laying a main girder for a passage on the side of the temporary pier and laying a main girder for the passage in this overhanging portion, For example, a method of fixing the bracket to the bracket can be considered.
Further, Patent Document 1 discloses a method for providing a working scaffold that extends and hangs to the side of a bridge using an existing rail of the bridge.

JP 2001-172920 A

The method of extending the receiving girder substantially increases the width of the temporary pier, which increases the amount of steel and increases the labor during construction.
Further, in the method of fixing the bracket, the work passage is always formed over the entire length of the temporary pier, but it is not reasonable because the width of the temporary pier is substantially increased.
Furthermore, the construction method of Patent Document 1 is applied to an existing bridge and cannot be applied to a temporary pier.

  From such a viewpoint, an object of the present invention is to propose a temporary scaffold unit and a temporary pier that can reasonably secure a passage.

  In order to solve the above problems, the temporary scaffold unit of the present invention is supported by a ground covering material, and is laid on the plurality of brackets and a plurality of brackets attached to the ground covering material. A scaffolding plate; and a handrail horizontally mounted on tip portions of the plurality of brackets, wherein the bracket includes a locking member that is locked to an upper portion of the ground covering material, and the bracket side of the ground covering material. An abutting member that abuts on the side surface of the cover material, and is slidable along the longitudinal direction of the cover material or detachable from the cover material.

According to such a temporary scaffold unit, it can be appropriately moved according to the progress status during construction, which is reasonable. That is, since it is supported by the bracket locked to the ground covering material so as to be slidable or detachable, the movement is easy.
The temporary scaffold unit according to the present invention can be installed as long as it is a structure provided with a ground covering material along the edge of the lining plate. May be.

  The said ground covering material consists of steel materials provided with the web which connects a pair of upper and lower flanges and the both flanges, for example. In this case, the locking member is provided with a first roller that rolls on the side of the web opposite to the bracket, and a second roller that rolls on the side of the web on the bracket side. What is necessary is just to use a member. If it does in this way, since it will become possible to run a bracket along a ground covering material, a temporary scaffold unit can be simply moved without using a crane.

  Furthermore, if the third roller for rolling the upper surface of the upper flange is provided on the locking member, the temporary scaffold unit can be moved more easily.

  Further, the second temporary scaffold unit of the present invention is provided so as to extend outside the temporary pier, and is supported so as to be detachable or slidable with respect to a member provided at an edge of the temporary pier. It has the member and the scaffold board and handrail attached to the said supporting member, It is characterized by the above-mentioned.

  According to such a temporary scaffold unit, since it is provided so as to be movable through a support member that is detachably or slidably supported with respect to a member provided on the temporary pier, it is appropriately selected according to the progress status during construction. Can be moved.

  Moreover, the temporary jetty of the present invention includes a main girder, a lining plate laid on the upper surface of the main girder, and a ground covering material laid on the upper surface of the main girder along an end portion of the lining plate. A temporary scaffold unit attached to the ground covering material and projecting to the side of the main girder, wherein the temporary scaffold unit is movable.

  According to this temporary pier, it is possible to secure a necessary passage at a required position by moving the temporary scaffold unit according to the progress of the temporary pier construction and the usage status of the temporary pier. Is.

  Further, the ground covering material is made of a steel material having a U-shaped cross section including a pair of upper and lower flanges and a web, and the temporary roller unit travels on one side of the web, and the other of the web If it has the 2nd roller which drive | works this side surface, the movement of a temporary scaffold unit will become easy.

  According to the temporary scaffold unit and temporary pier of the present invention, it is possible to reasonably secure a passage.

It is a top view which shows the temporary jetty which concerns on embodiment of this invention. (A) is a cross-sectional view of the temporary scaffold unit installed in the temporary pier of FIG. 1, (b) is a side view of the temporary scaffold unit.

In this embodiment, a temporary pier 1 constructed by a hand-drawn delivery method will be described.
As shown in FIG. 1, the temporary pier 1 of the present embodiment includes a main girder 2, a lining plate 3, a ground covering material 4, and a temporary scaffold unit 5.

Temporary pier 1 uses a heavy machine (not shown) installed on the shore or existing part of temporary pier 1 to send out (extend) main girder 2 and lining board 3 from one shore toward the opposite shore. Form.
When installing a heavy machine on the existing part of the temporary pier 1, the temporary scaffold unit 5 is installed on the temporary pier 1 along the installation position of the heavy machine as shown in FIG.

The main girder 2 is constructed along the axial direction of the temporary pier 1 as shown in FIG.
In the present embodiment, four main girders 2, 2,... Are arranged in parallel at equal intervals, but the number of main girders 2 is not limited. In the present embodiment, the distance between the center lines of the main beam 2 is set to be the same as the length of the lining plate 3 in the longitudinal direction.

As shown in FIG. 2A, the main girder 2 of the present embodiment is configured by an I-shaped steel including a pair of upper and lower flanges 21 and 21 and a web 22 that connects the flanges 21 and 21. . The main girder 2 is installed by connecting I-shaped steel from one bank to the opposite bank as needed.
In addition, the material which comprises the main girder 2 is not limited to I-section steel, For example, H-section steel and groove type steel may be sufficient.

The lining board 3 is a plate-like member having a rectangular shape in plan view, and is laid on the upper surface of the main beam 2 as shown in FIG. 1 and FIG.
In the present embodiment, the lining plate 3 is horizontally placed between the adjacent main girders 2. The longitudinal direction of the lining plate 3 is a direction orthogonal to the axial direction of the temporary pier 1. The lining plate 3 is laid so as to be continuous along the axial direction of the main girder 2. By arranging the plurality of lining plates 3 without any gaps, a work floor is formed on the upper surfaces of the plurality of main girders 2, 2,.

In this embodiment, the butting surfaces of the lining plates 3 adjacent to each other on the left and right (in the direction orthogonal to the axial direction of the temporary pier 1) are on the extension line of the web 22 of the main girder 2 (the center line of the main girder 2). As shown, the lining plate 3 is laid.
The lining plate 3 is fixed to the main beam 2 using a jig or the like as necessary.
In addition, the lining board 3 should just have a yield strength required at the time of construction and use of the temporary jetty 1.

  The ground covering material 4 is disposed on the left and right edges (ends) of the temporary pier 1 along the axial direction of the temporary pier 1. In the present embodiment, the ground covering material 4 is laid on the upper surfaces of the two main girders 2 arranged outside the four main girders 2. That is, the ground covering material 4 is laid along the end portion of the lining plate 3.

As shown in FIG. 2A, the ground covering material 4 of the present embodiment is made of a steel material having a U-shaped cross section including a pair of upper and lower flanges 41 and 41 and a web 42 that connects the flanges 41 and 41. .
In addition, the material which comprises the ground covering material 4 is not limited, For example, H-section steel, L-section steel, etc. may be sufficient.

  The ground covering material 4 is mounted on the upper surface of the main girder 2 so that the flanges 41, 41 stick out from the web 42 toward the opposite side of the lining plate 3, and is fixed to the main girder 2. The method of fixing the ground covering material 4 to the main girder 2 is not limited. For example, the flange 21 of the main girder 2 and the flange 41 of the ground covering material 4 are sandwiched and fixed by a jig such as a clamp. Alternatively, it may be bolted.

  As shown to (a) of FIG. 2, in this embodiment, the butt | matching surface of the side surface of the web 42 of the ground covering material 4 and the end surface of the lining board 3 is the web 22 of the main girder 2 (center of the main girder 2). Line).

  The front end of the flange 41 on the lower side of the ground covering material 4 (the end opposite to the web 42) is located on the inner side (the web 42 side) than the front end of the flange 21 on the upper side of the main girder 2. 2 is configured such that a part of the upper surface of the upper flange 21 (the end on the side opposite to the cover plate 3) is exposed.

The temporary scaffold unit 5 is attached to the ground covering material 4 so as to project to the side of the main beam 2 as shown in FIG.
The temporary scaffold unit 5 is movable along the ground covering material 4.

The temporary scaffold unit 5 according to the present embodiment includes a bracket 51 (support member), a scaffold plate 52, and a handrail 53.
As shown in FIG. 2 (b), in the present embodiment, the base material 3 is provided with four brackets 51, 51,... Along the axial direction, but the number of brackets 51 is two or more. There is no limitation as long as there is.

The bracket 51 of this embodiment is formed by combining steel materials (for example, angle steel).
The bracket 51 includes a vertical member 51a erected on the main girder 2 along the outer side surface of the ground covering material 4 (tips of the upper and lower flanges 41 and 41), and an upper end of the vertical material 51a. It is formed in a right triangle shape by a cross member 51b extending on the opposite side, and an oblique member 51c connecting the lower end of the vertical member 51a and the tip of the cross member 51b.
In addition, the material which comprises the bracket 51 and the shape of the bracket 51 are not limited.

  At the base end portion (vertical member 51 a) of the bracket 51, a locking member 54 that is locked to the upper portion of the ground covering material 4 and an abutting member that contacts the side surface of the web 42 of the ground covering material 4 on the bracket 51 side. 55.

The locking member 54 is formed in an L shape so that the locking member 54 can be locked to a corner portion between the upper surface of the flange 41 on the upper side of the ground covering material 4 and the side surface of the web 42 on the lining plate 3 side. ing.
The locking member 54 includes a first roller 56 that rolls on the side of the web 42 on the side of the lining plate 3 (a side opposite to the bracket 51), and a third roller 57 that rolls on the upper surface of the flange 41. Is provided.

The first roller 56 is installed on the locking member 54 via a jack, and is provided so as to be able to advance and retreat in the projecting direction of the web 41 of the cover material 4 (direction perpendicular to the axial direction of the temporary pier 1). .
Since the contact state with the web 41 is maintained when the first roller 56 advances by the jack, the bracket 51 can be prevented from falling.

A fourth roller 58 that rolls on the upper surface of the flange 21 on the upper side of the main girder 2 is provided at the lower end of the vertical member 51 a of the bracket 51.
The contact member 55 of the present embodiment is a second roller that rolls on the side surface of the web 42 of the ground covering material 4.

  That is, the bracket 51 of the present embodiment is configured to be slidable along the longitudinal direction of the ground covering material 4 by the first roller 56, the contact member (second roller) 55, the third roller 57, and the fourth roller 58. Has been.

  The scaffold plate 52 is placed on the upper surface of the cross member 51 b of the plurality of brackets 51. In the present embodiment, one scaffolding plate 52 is horizontally mounted across the four brackets 51, but there are a plurality of scaffolding plates 52 along the axial direction of the temporary pier 1 according to the size of the temporary scaffolding unit 5. You may arrange | position continuously.

In the present embodiment, as shown in FIG. 2A, the three scaffolding plates 52, 52, 52 are arranged in parallel along the longitudinal direction of the cross member 51b (the direction perpendicular to the axial direction of the temporary pier 1). Has been. The number of scaffold plates 52 is not limited. Moreover, the material which comprises the scaffold board | plate 52 is not limited, For example, an expanded metal etc. should just be used.
The scaffold plate 52 is installed so that no gap is generated between the adjacent scaffold plates 52. Further, the scaffold plate 52 is fixed to the bracket 51 as necessary.

The handrail 53 is installed in the front-end | tip part of several bracket 51,51, ....
The handrail 53 is formed by horizontally placing a handrail bar 53b on a support column 53a erected at the tip of the bracket 51. The configuration of the handrail 53 is not limited.

  The temporary scaffold unit 5 is restrained by the ground covering material 4 by stopper jigs 59, 59 provided at both ends in the axial direction. That is, the temporary scaffold unit 5 is prevented from moving along the cover material 4 by the stopper jig 59, and can be moved along the cover material 4 when the stopper jig 59 is removed.

  According to the temporary pier 1 of the present embodiment, since the temporary scaffold unit 5 is slidably provided, the temporary scaffold can be provided at a desired position according to the progress of the construction of the temporary pier 1. Therefore, the construction of the temporary pier 1 can be easily performed.

Since the temporary scaffold unit 5 can be easily moved by using human power, a winch, or the like, the temporary scaffold unit 5 can be easily and inexpensively constructed as compared with a case where the temporary scaffold unit 5 is lifted by a heavy machine or the like.
By moving the temporary scaffold unit 5 without disassembling, it is possible to save labor during construction.

Moreover, since the temporary scaffold unit 5 is formed by assembling unitized members, it is easy to install and can be diverted.
Furthermore, since it is formed by combining unitized members, a highly reliable temporary scaffold can be formed.

The embodiment according to the present invention has been described above. However, the present invention is not limited to the above-described embodiment, and the above-described components can be appropriately changed without departing from the spirit of the present invention.
Although the temporary pier has been described in the above embodiment, the use of the temporary scaffold unit of the present invention is not limited to the construction of the temporary pier, and may be a temporary work table, for example.

  In the said embodiment, although the case where a bracket was slidable along the longitudinal direction of a ground covering material was demonstrated, you may install a roller (1st roller-4th roller) as needed, and it may abbreviate | omit. Good. That is, the bracket does not necessarily need to be slidable and may be detachable from the ground covering material.

  In the above embodiment, the bracket has the first roller, the second roller, the third roller, and the fourth roller, but the number of rollers provided in the bracket is not limited. For example, you may have only two rollers, a 1st roller and a 2nd roller.

Moreover, although the said embodiment demonstrated the case where the bracket was attached to the ground covering material (it latched), if the member which attaches a bracket is a member provided in the edge part of a temporary pier, it will be ground. It is not limited to the covering material.
Further, the support member of the temporary scaffold unit is not limited to the bracket.

DESCRIPTION OF SYMBOLS 1 Temporary pier 2 Main girder 3 Covering board 4 Ground covering material 41 Flange 42 Web 5 Temporary scaffolding unit 51 Bracket (support member)
52 Scaffold plate 53 Handrail 54 Locking member 55 Contact member (second roller)
56 1st roller 57 3rd roller

Claims (6)

A temporary scaffold unit supported by a ground covering material,
A plurality of brackets attached to the ground covering material;
A scaffold plate laid on the plurality of brackets;
A handrail laid horizontally at the tip of the plurality of brackets,
The bracket includes a locking member that is locked to an upper portion of the ground covering material, and a contact member that is in contact with a side surface of the ground covering material on the bracket side, and the longitudinal direction of the ground covering material A temporary scaffold unit characterized by being slidable along the surface or detachable from the ground covering material. The ground covering material is made of a steel material having a pair of upper and lower flanges and a web connecting the flanges,
The locking member is provided with a first roller that rolls on the side surface of the web opposite to the bracket,
The temporary scaffold unit according to claim 1, wherein the contact member is a second roller that rolls on a side surface of the web on the bracket side.   The temporary scaffold unit according to claim 2, wherein a third roller that rolls on the upper surface of the upper flange is provided on the locking member. It is a temporary scaffold unit that extends over the outside of the temporary pier,
A support member that is detachably or slidably supported with respect to a member provided at an edge of the temporary pier,
A temporary scaffold unit comprising a scaffold plate and a handrail attached to the support member. The main girder,
A lining plate laid on the upper surface of the main beam;
A ground covering material laid on the upper surface of the main girder along the edge of the lining plate;
A temporary pier equipped with a temporary scaffold unit attached to the ground covering material and projecting to the side of the main girder,
The temporary pier, wherein the temporary scaffold unit is movable. The ground covering material is made of a steel material having a U-shaped cross section provided with a pair of upper and lower flanges and a web,
The said temporary scaffold unit is provided with the bracket which has the 1st roller which drive | works the one side surface of a web, and the 2nd roller which drive | works the other side surface of the said web, The Claim 5 characterized by the above-mentioned. The temporary pier described.

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