JPH09217307A - Structure of safety wall with covering plate and installation method of the safety wall - Google Patents

Abstract

PROBLEM TO BE SOLVED: To improve safety by standing a covering plate which is removed vertically by a covering plate support member around an opening which is constituted by removing the covering plate and fixing the covering plate support member on a covering beam by a jig for fixing. SOLUTION: A part of covering plates 1 is removed from a closed face which is formed by spreading out many covering plates 1 to open a rectangular opening 3 for doorway. A corner part support member 4 is arranged at four corners of the opening 3, and two side part support members 5 are arranged in a central part of two side pieces. Moreover, the covering plate 1 which is removed is stood against a pair of opposing side parts of the opening 3 by using the corner part support member 4 and the side part support member 5 to constitute a safety wall. Furthermore, a safety fence 6 is mounted on a pair of the other opposing side parts. Each support member 4, 5 is fixed on a covering beam for laying covering plate which is exposed in the opening 3 by using a locking metal fitting. Consequently, it is possible to eliminate a possibility that the safety wall is blown off by strong wind and moves like conventional pylon and barricade and improve safety.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a closed surface formed by laying a large number of lining plates and removing a part of the lining plates to carry a material or the like into the closed surface. The present invention relates to a structure of a safety wall for securing safety around an opening obtained by removing a plate and a method of installing the safety wall.

[0002]

2. Description of the Related Art For example, in subway construction and the like, in order to perform work such as excavation in the underground space of a road, by covering a road surface by arranging a plurality of rectangular metal plates called lining plates, In that case, you can pass the vehicle as usual,
Subway construction can be done in the basement. In such construction, the foundation pile is usually buried in the ground and H
A lining girder made of shaped steel or the like is laid horizontally, and a plurality of lining plates are laid on the lining girder to increase the strength against the load caused by the passage of vehicles and the like.

Further, it is necessary to remove the lining plate when carrying in construction materials or heavy equipment into the underground, and usually the heavy lining equipment such as a crane or a wrecker is used to lift the lining plate. Then, the opening from which the lining plate has been removed poses a risk that the worker may fall or materials may fall, so in the past, a foldable barricade around the opening,
A pylon, a tiger rope (a black and yellow striped rope), etc. are used to prevent people from entering.

[0004]

However, although such a conventional method can secure a certain degree of safety, for example, parts used for construction may fall on the floor surface from the opening. However, there was a possibility that the barricade would move due to strong winds, and higher safety was required.

The present invention has been made in order to solve such a conventional problem, and an object thereof is to utilize a detached lining plate to fall a person around the opening with high safety. Another object of the present invention is to provide a structure of a safety wall that can prevent falling of parts and the like and a method of installing the safety wall.

[0006]

In order to achieve the above object, the structure of the safety wall according to the present invention is a rectangular structure in which a part of the lining plates is removed from a closed surface formed by spreading a large number of lining plates. In the structure of the safety wall formed around the opening when the opening / closing opening for the opening is formed, the removed lining plate is provided at a plurality of positions on the peripheral side of the opening. A lining plate supporting member that leans substantially vertically around the opening, and a fixing jig that fixes the lining plate supporting member to a lining girder for mounting the lining plate exposed in the opening. It is a feature.

Further, the method of installing the safety wall according to the present invention is characterized in that a plurality of lining plates are spread over the closed surface,
A method of installing a safety wall formed around the opening when a rectangular doorway opening is opened by removing a part of the lining board, the lining board near the opening is A lining plate supporting member capable of leaning the lining plate was fixed on the lining girder for placing the lining plate exposed when removed, and the lining plate was removed along the two opposite sides of the opening. The lining plate is leaned against the lining plate support member, and the lining plate and the lining plate support member are fixed by locking means for locking the lining plate support member and the lining plate, It is characterized by attaching a safety fence along the other two opposite sides.

According to the present invention constructed as described above, when some of the lining plates spread over a large number of the lining plates are removed to form the material carrying-in opening, opening is performed. The lining plate support member is fixed on the exposed lining girder, and the removed lining plate is supported and leaned against the lining plate support member. Therefore, the removed lining plate
It can be used as a safety wall that guards around the opening, improving the safety against people falling, dropping materials, etc., and saving space for the removed lining plate. become able to.

[0009]

Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 is a perspective view showing a configuration of an embodiment of a structure of a safety wall using a lining plate to which the present invention is applied, and FIG. 2 is a plan view thereof. The lining plate 1 shown in FIGS. 1 and 2 is used, for example, at a construction site of a subway, so that subway construction work can be performed underground and vehicles can be passed through as usual on the ground. A large number of lining boards 1 are spread over the entire surface. Then, a lining plate 1 arranged at a predetermined portion for carrying in materials and the like is removed to form rectangular openings 3 and four corners of the opening 3 have corner supporting members. 4 are arranged, and two side supporting members 5 are arranged at the central portions of the two sides.

Then, the corner support member 4 and the side support member 5 are used to lean the removed lining plate 1 against a pair of opposite sides of the opening 3 to form a safety wall. Further, safety fences 6 are attached to the other pair of opposing sides to prevent a person from falling into the opening 3 and materials from falling. Further, when the lining plate 1 is leaned against each of the support members 4 and 5, a locking metal fitting 7 (locking means) is attached to fix the lining plate 1.

FIGS. 3 and 4 are perspective views showing the structure of the corner support member 4, with each drawing (a) showing an outside perspective view and each drawing (b) showing an inside perspective view. And what is shown in FIG. 3 and what is shown in FIG. 4 has a symmetrical structure,
The corner supporting members 4 of the type shown in FIG. 3 are used for the corners C1 and C4 shown in FIG. 2, and the corner supporting members 4 of the type shown in FIG. 4 are used for the corners C2 and C3.

As shown in FIGS. 3 (a) and 3 (b), in the corner support member 4, a trapezoidal surface 11a whose one side is cut in a taper shape and a rectangular surface 11b are substantially perpendicular to each other. The connected outer frame 11 having an L-shaped cross section and the rectangular surface 11 of the outer frame 11
a support piece 12 fixed to the trapezoidal surface 11a so as to be parallel to b, a base plate 13 fixed to the bottom of the support piece 12, ribs 14 and 15 provided upright from the base plate 13, and the ribs. It has a fixing plate 16 attached in parallel with the base plate 13 at the upper end portion. The lower end of the outer frame 11 is set higher than the position of the base plate 13 by a predetermined distance. The fixing plate 16 has four bolt holes 17 for fixing a later-described locking metal fitting 7. Further, a bolt hole 19 for fixing a bracket described later is formed near the upper end of the trapezoidal surface 11a. The corner support member 4 sandwiches the lining plate 1 between the rectangular surface 11b and the support piece 12 and leans the lining plate 1. The corner supporting member 4 of the type shown in FIG.
Since it has a symmetrical shape with that shown in FIG.

FIG. 5 is a perspective view showing the structure of the side support member 5. As shown in the figure, the supporting member 5 is provided with a supporting piece 20 standing upright on one side of the base plate 18 for leaning the lining plate 1, and in the vicinity of the middle of the supporting piece 20 in parallel with the base plate 18. The fixing plate 21 is fixed with a narrower width than the base plate 18. And
In order to support the load applied to the fixing plate 21,
A trapezoidal rib 22 is interposed between the fixing plate 21 and the base plate 18. Further, trapezoidal frame members 23 are arranged on both sides of the fixing plate 21. Then, similar to the above-mentioned corner support member 4, bolt holes 24 for fixing a later-described locking metal fitting 7 are formed at eight positions in the fixing plate 21.

FIG. 6 is a perspective view showing the structure of the locking metal fitting 7 used for fixing the corner support member 4 and the side support member 5 and the lining plate 1, and as shown in the drawing, The metal fitting 7 includes fixing plates 16 and 21 for the support members 4 and 5 and bolts.
It is composed of a base plate 33 fixed with nuts, a long piece 34 having a long rectangular shape, a hooking portion 35 formed in the upper end of the long piece 34 and having a hook shape, and a reinforcing rib 36. ing. In addition, the base plate 33
Has a bolt hole 36 for fixing to each support member 4, 5.
Are drilled at four locations.

FIGS. 7 and 8 show how the corner support member 4, the side support member 5 and the lining plate 1 are fixed to each other at the corners and sides of the opening 3 by using the metal fittings 32. Shows,
The operation of this embodiment will be described with reference to the drawings. First, in the case where several lining plates 1 are removed from the road surface that is covered with a large number of lining plates 1 to form the openings 3, the linings to be removed based on the size of the material to be carried in. The number and position of the plates 1 are determined. Then, when the number of the lining plates 1 to be removed is determined, the lining plates 1 at this portion are hung using a heavy machine such as a crane or a tow truck.

As a result, for example, when the opening 3 as shown in FIGS. 1 and 2 is formed, the inside of the opening 3 is covered with an H-shaped steel or the like on which the removed cover plate 1 is mounted. The work girder 2 is exposed. Therefore, the corner support members 4 are attached to the four corners of the opening 3 using the lining girder 2. That is, as shown in FIG. 7, the corner supporting member 4 is placed on the exposed flange surface of the lining girder 2, and the flange surface and the base plate 13 of the corner supporting member 4 are clamped by a plurality of clamps 31 (FIG. Then use 2 pieces) to fasten and fix. After that, one end side of the lining plate 1 is inserted and leaned against a groove surrounded by the outer frame 11 of the corner support member 4 and the support piece 12 (see FIGS. 3 and 4) in a U-shape. At this time, 4 of the lining plate 1
Angle pieces 1a for preventing slippage on the back side of the two corners
Is attached, the lining plate 1 may be inserted so that the angle piece 1a and the side edge of the support piece 12 are in contact with each other. Further, as shown in FIG. 8, the opposite end of the lining plate 1 is supported and leaned against the supporting piece 20 of the side supporting member 5 (see FIG. 5). Also in this case, the angle piece 1a of the lining plate 1 and the support piece 20 are brought into contact with each other and leaned against each other, as in the above.

Then, in order to firmly fix the leaning lining plate 1, a locking metal fitting 7 is used. That is, as shown in FIGS. 7 and 8, after the hook portion 35 of the locking metal fitting 7 is hooked in the groove on the side surface of the lining plate 1, the fixing plates 16 and 21 of the support members 4 and 5 (see FIG. 3). , FIG. 5) and the base plate 33 of the locking fitting 7 are fixed with bolts and nuts. As a result, the lining plate 1 is firmly leaned against the periphery of the opening 3 and acts as a safety wall. Then, the lining plate 1 is also provided on the opposite side by the same method.
As a safety wall, so that the two sides of the opening 3 are surrounded by the lining plate 1.

Next, a safety fence 6 is erected on the other pair of side portions that are not surrounded by the lining plate 1 of the opening 3 to secure the surrounding safety. Less than,
The structure of the safety fence 6 will be described. Safety fence 6 shown in Figure 1
Is an L-shaped handrail 41 which is arranged at the end and has an almost L-shape.
And a U-shaped handrail 42 arranged in the middle and forming a U-shape. Then, as shown in FIG. 9, a handrail fixing bracket 43a is attached to the outer frame 11 of the corner support member 4 through a bolt hole 19, and L
One end of the U-shaped handrail 41 is supported by the bracket 43a, and further, as shown in FIG. 1, brackets 43b for fixing the handrail are attached to both sides of the U-shaped handrail 42. The other end of the character handrail 41 is supported and fixed by this bracket 43b. Further, the leg portions of the handrails 41, 42 can be fitted and fixed in the hanging holes formed at the corners of the lining plate 1.

FIG. 10 is an explanatory view showing how the L-shaped handrail 41 and the U-shaped handrail 42 are connected, and FIG.
Shows a front view, and FIG. 7 (b) shows a bottom view. As shown in the figure, a bracket 43b having a circular hole is fixed to the leg portion 42a of the U-shaped handrail 42 by welding or the like, and the end portion of the L-shaped handrail 41 is inserted into the circular hole. Fasten with bolts 44. As a result, the two side portions that are not surrounded by the lining plate 1 can be surrounded by the safety fence 6, and the safety in this part can be ensured. Also,
Since the widths of the L-shaped handrail 41 and the U-shaped handrail 42 are substantially the same as the width of the lining plate 1 on the short side, the hangings formed at the corners of the lining plate 1 are just used. Can be fitted into a holding hole. Therefore, in the embodiment shown in FIG.
The three lining plates 1 are removed in the lateral direction to form the opening 3, but even if this number increases to four or five, a U-shaped handrail 42 is sequentially added for safety. The fence 6 can be configured.

FIG. 11 is an explanatory view showing the structure of the locking metal fitting 51 when the lining plate 1 having no groove for locking the hook portion 35 of the locking metal fitting 7 is used on the side surface. That is, two types of so-called metro type and sumideck type are generally used for the lining plate 1. Of these, for the metro type lining plate, as described above, the groove is formed on the side surface portion of the lining plate 1. Since the groove is formed, the hook portion 35 of the locking metal fitting 7 can be locked by using this groove, but since there is no groove on the side surface of the sumideck type lining plate, the back surface of the lining plate is not formed. The locking metal fitting 51 and the locking piece 54 are fitted and fixed in the opening in the. The locking metal fitting 51 is composed of a base plate 53, a long piece 55 erected vertically to the base plate 53, and reinforcing ribs 52, and bolt holes 56 are formed at four corners of the base plate 53. Has been done. Further, on the upper side of the long piece 55, two bolt holes 57 for fastening and fixing the locking piece 56 are formed.

12 (a) and 12 (b) are explanatory views showing the structure of the locking piece 54. FIG. 12 (a) is a front view, FIG. 12 (b) is a side view (viewed from the arrow "A"), and FIG. c) shows the bottom view (view from the “B” arrow), respectively. As shown in each of FIGS. 12A and 12B, the locking piece 54 has a structure in which a strip-shaped flat plate is smoothly bent at the central portion to form a step, and a bolt hole 58 is formed on one end side. Has been done. Then, as shown in FIG. 13, after the bent portion 59a on the back surface side of the sumi-deck type lining plate 59 is sandwiched between the upper end portion of the locking metal fitting 51 and the locking piece 54, the bolt of the locking metal fitting 51. Bolts and nuts are inserted through the holes 57 and the bolt holes 58 of the locking pieces 54 to fasten and fix them. As a result, the sumi-deck type lining plate 59 is firmly fixed to the locking fitting 51.

In this way, in this embodiment,
When the plurality of lining plates 1 are removed to form the opening 3 for carrying in materials and the like, the removed lining plates 1 are leaned against a pair of opposing sides around the opening 3 to form a safety wall. ,
A handrail-shaped safety fence 6 is attached to the other pair of sides by fitting and fixing it in the hanging hole of the lining plate 1. Therefore, with a simple structure, the periphery of the opening can be surrounded by a solid member, and the safety around the opening 3 is significantly improved.

[0023]

As described above, according to the structure of the safety wall and the method for installing the safety wall of the present invention, the periphery of the opening formed by removing the lining plate is removed from the lining plate and Surrounded by a safety fence. And since the lining plate is firmly fixed on the lining girder by the lining plate supporting member fixed by a fixing jig such as a clamp, it can be leaned firmly and the safety fence is covered with lining. It can also be fitted firmly into the hole for suspending the plate and firmly fixed. Therefore, unlike conventional pylons and barricades, it is not moved by being hit by a strong wind, and the effect of significantly improving safety is obtained.

[Brief description of drawings]

FIG. 1 is a perspective view showing a configuration of an embodiment of a structure of a safety wall to which the present invention is applied.

FIG. 2 is an explanatory diagram showing a state when the configuration shown in FIG. 1 is viewed from above.

3A and 3B are explanatory diagrams showing a configuration of a first corner support member, in which FIG. 3A shows an outside state and FIG. 3B shows an inside state.

4A and 4B are explanatory views showing a configuration of a second corner portion supporting member, in which FIG. 4A shows an outside state and FIG. 4B shows an inside state.

FIG. 5 is a perspective view showing a configuration of a side support member.

FIG. 6 is a perspective view showing a configuration of a locking metal fitting.

FIG. 7 is an explanatory view showing a state in which a lining plate is fixed by a corner locking member.

FIG. 8 is an explanatory diagram showing a state in which a lining plate is fixed by a side support member.

FIG. 9 is an explanatory view showing a state where a handrail fixing bracket is fixed to a corner supporting member.

FIG. 10 is an explanatory diagram showing how the L-shaped handrail and the U-shaped handrail are connected.

FIG. 11 is an explanatory view showing a structure of a locking metal fitting for fixing a smideck type lining plate.

FIG. 12 is an explanatory diagram showing a configuration of a locking piece, (a)
Is a front view, (b) is a side view, and (c) is a bottom view.

FIG. 13 is an explanatory view showing a state in which a sumi-deck type lining plate is leaned against by a locking metal fitting.

[Explanation of symbols]

 1 lining plate 2 lining girder 3 opening 4 corner support member (lining plate support member) 5 side support member (lining plate support member) 6 safety fence 7,51 locking metal fitting (locking means) 11 Outer frame 11a Trapezoidal surface 11b Rectangular surface 12,20 Support piece 13,18,33,53 Base plate 14,15,22,36 Rib 16,21 Fixing plate 17,19,24,36,56,57,58 Bolt hole 23 Frame material 31 Clamp (fixing jig) 34,55 Long piece 35 Hooking part 41 L-shaped handrail 42 U-shaped handrail 43a, 43b Bracket 44 Bolt 54 Locking piece 59 Sumideck type lining plate

Claims (5)

[Claims] 1. Formed around a rectangular opening / closing opening when a part of the lining plate is removed from a closed surface formed by spreading a large number of lining plates to open the rectangular entrance / exit opening. In the structure of the safety wall, a lining plate support member, which is disposed at a plurality of locations around the opening, and leans the removed lining plate almost vertically around the opening, and the lining plate support. A structure for a safety wall using a lining plate, comprising: a fixing jig for fixing a member to a lining girder for mounting a lining plate exposed in the opening. 2. The lining according to claim 1, further comprising locking means for locking the lining plate supported and leaned by the lining plate supporting member to the lining plate supporting member. Safety wall structure using plates. 3. The removed lining plate is erected by the lining plate supporting member along the two opposite sides of the opening having a rectangular opening, and the other two opposite sides. The structure of a safety wall using a lining plate according to claim 1, wherein a safety fence that is detachably locked to the lining plate support member is installed. 4. The safety wall using a lining plate according to claim 3, wherein the safety fence is fitted and fixed to a hanging hole of a lining plate laid around the opening. Structure. 5. Formed around a rectangular opening / closing opening when a part of the lining plate is removed from the closed surface formed by laying a large number of lining plates to open the rectangular entrance / exit opening. In the method of installing a safety wall, a lining plate supporting member capable of leaning a lining plate on a lining girder for placing a lining plate, which is exposed when the lining plate is removed, in the vicinity of the opening. And a lock for leaning the removed lining plate against the lining plate supporting member along two opposite sides of the opening, and locking the lining plate supporting member and the lining plate. A method of installing a safety wall using a lining plate, characterized in that the lining plate and the lining plate support member are fixed by means, and a safety fence is attached along the other two opposite sides of the opening.