JP2023018208A - Method and device for constructing sidewalk guard working platform - Google Patents

Abstract

To provide a method and a device for constructing a sidewalk guard working platform for protecting passers-by on a sidewalk from falling objects.SOLUTION: This method comprises: a foothold construction step of constructing first and second foothold structures (1a and 1b) at positions of both sides sandwiching a sidewalk; a working platform construction step of connecting the first and second foothold structures by beam means (2) to construct a working platform structure (M); a unit frame mounting step of mounting and fixing unit frames (7) along an upper part of the beam means via a mounting metal fixture (6); a roof substrate formation step of connecting bottom parts of the adjacent unit frames to each other via a lower crosspiece member (25); a roof material laying step of laying a plurality of roof panels (33) on the lower crosspiece member between the adjacent unit frames; and a roof material holding step of connecting upper parts of the adjacent unit frames to each other via an upper crosspiece member (34) to hold the roof panels.SELECTED DRAWING: Figure 3

Description

The present invention relates to a method and apparatus for constructing a sidewalk protection platform for protecting pedestrians on a sidewalk facing a construction site from falling objects.

At a construction site, for example, a temporary scaffolding is constructed so as to surround a building, and work such as construction work is performed at a high place. In addition, even if there is no temporary scaffolding, work is carried out at high places in existing structures, structures under construction, and the like. However, when a sidewalk faces a construction site, there is a risk that tools, work equipment, and other items being worked at height may fall, posing a hazard to passers-by on the sidewalk.

For this reason, it is preferable to construct a sidewalk protection gantry surrounding the sides and top of the sidewalk to protect pedestrians on the sidewalk from falling objects.

JP 2019-52436 A JP 2012-219615 A

The sidewalk protection gantry that the present applicant has conventionally implemented is, for example, pillars formed of steel frames such as H-shaped steel and L-shaped steel are arranged in rows at intervals on the side of the sidewalk, and the pillars are connected by long beams. At the same time, short beams are fixed to the upper ends of the pillars, and the short beams are connected with braces to construct a gantry structure. After that, plywood panels are laid on the short beams to form a roof. is configured as

However, since it is necessary to prepare steel columns, long beams, short beams, etc. for each site, the productivity is low, and it is not easy to carry to the site because it is heavy. Furthermore, since it is necessary to assemble the posts and beams by connecting and fixing them with a large number of bolts and nuts while lifting them with heavy machinery such as a crane on site, work efficiency is poor and it takes a long time to construct them. , incurs a very high cost.

By the way, Patent Document 1 proposes a temporary passage structure that connects the ticket gate and the platform outdoors due to station construction, and Patent Document 2 proposes a modular pedestrian tunnel, which can be easily constructed. provided access for persons However, any structure has a problem in terms of strength, and since it does not have strength comparable to the above-mentioned steel-frame sidewalk protection gantry that the applicant has conventionally implemented, safety cannot be ensured. Can not.

Therefore, the present invention provides a method and apparatus for constructing a sidewalk protection platform that has strength comparable to that of a steel-frame sidewalk protection platform, while solving various problems related to construction workability and costs as described above. The challenge is to

Therefore, the first aspect of the present invention relating to the method for constructing a sidewalk protection gantry is a method for constructing a protection gantry for protecting passers-by on the sidewalk from falling objects that fall onto the sidewalk facing the construction site. With respect to the X direction along the sidewalk and the Y direction intersecting the sidewalk, (A) construct a scaffolding structure extending in the X direction, and construct a first scaffolding structure and a second scaffolding structure on both sides of the sidewalk. (B) connecting the first scaffolding structure and the second scaffolding structure with beam means extending in the Y direction at a height position that does not hinder the traffic of passers-by; and (C) unit frame mounting for mounting and fixing a unit frame extending in the Y direction along the upper part of the beam means via a mounting bracket. (D) a step of forming a roof foundation in which the lower parts of unit frames adjacent in the X direction are connected by lower crosspiece members, and a plurality of lower crosspiece members are spaced apart in the Y direction; E) Between the unit frames adjacent in the X direction, a plurality of roof panels are laid on the lower rail members in an overlapping state, and the side edges of the roof panels are aligned with the holding grooves of the unit frames. and (F) connecting the upper parts of unit frames adjacent in the X direction with upper crosspiece members and arranging a plurality of upper crosspiece members at intervals in the Y direction to form a roof panel. and a roof material holding step for holding the

The second aspect of the present invention constitutes means for constructing a protective platform for protecting pedestrians on the sidewalk from objects falling on the sidewalk facing the construction site. With respect to the Y direction intersecting the sidewalk, (A) a scaffolding construction step of constructing a scaffolding structure extending in the X direction and constructing a first scaffolding structure and a second scaffolding structure on both sides of the sidewalk; The first scaffolding structure and the second scaffolding structure are connected by beam means extending in the Y direction at a height position that does not hinder the traffic of passers-by, and a plurality of beam means are arranged at intervals in the X direction. (C1) a tilted structure forming step of attaching a movable frame capable of tilting downward in the Y direction along the upper portion of the beam means via jack means; (C2 ) a unit frame mounting step of mounting and fixing a unit frame extending in the Y direction along the upper portion of the movable frame via a mounting bracket; (E) between unit frames adjacent to each other in the X direction, a plurality of lower rail members are provided on the lower rail members; (F) a roof material laying step of laying roof panels in an overlapping state and fitting the side edges of the roof panels into the holding grooves of the unit frames; and a roof material holding step of holding the roof panel by connecting the upper rail members to the upper rail members and arranging the plurality of upper rail members at intervals in the Y direction.

Furthermore, the third invention of the present invention constitutes a means for constructing a protective platform for protecting pedestrians on the sidewalk from objects falling on the sidewalk facing the construction site. With respect to the Y direction intersecting the sidewalk, (A) a scaffolding construction step of constructing a scaffolding structure extending in the X direction and constructing a first scaffolding structure and a second scaffolding structure on both sides of the sidewalk; The first scaffolding structure and the second scaffolding structure are connected by beam means extending in the Y direction at a height position that does not hinder the traffic of passers-by, and a plurality of beam means are arranged at intervals in the X direction. (C1) arranging mounting brackets provided with jack means along the upper part of the beam means so that the height of the mounting brackets arranged in a row is directed toward the sidewalk; (C2) an inclined structure forming step of aligning along a downwardly inclined inclined line; (D) a step of forming a roof substrate in which the lower parts of unit frames adjacent in the X direction are connected to each other by lower crosspiece members, and a plurality of lower crosspiece members are arranged at intervals in the Y direction; and (E) the X direction. Between the unit frames adjacent to each other, a plurality of roof panels are laid on the lower rail members in an overlapping state, and the side edges of the roof panels are fitted into the holding grooves of the unit frames. (F) A roof that holds roof panels by connecting the upper parts of unit frames adjacent in the X direction with upper crosspiece members and arranging a plurality of upper crosspiece members at intervals in the Y direction. and a material holding step.

In a preferred embodiment of the method of the present invention, after the unit frame attaching step, a rectangular frame forming step of connecting both ends of the unit frames adjacent in the X direction with a pair of end frames is configured. In the roof material laying process, the edge of the roof panel is fitted into the grooves of the pair of end frames.

Regarding the apparatus of the present invention, the unit frame used in the construction method has, in terms of cross section, integrally formed upper and lower horizontal walls at the upper and lower ends of the vertical wall, and holding grooves at the upper part located on both sides of the vertical wall. and a lower connecting groove, the holding groove is formed to open toward the side of the unit frame, and the side edge of the roof panel is fitted into the holding groove It is

In one embodiment, the connecting groove is formed so as to open toward the side of the unit frame, and fixed protrusions protruding from the connecting groove are provided at intervals in the longitudinal direction of the unit frame. In the unit frames adjacent to each other in the X direction, the lower crosspiece members are constructed so as to span the fixed protrusions facing each other.

In another embodiment, the connecting groove constitutes a trough opening upward toward the holding groove, and the outer side wall of the trough is spaced apart in the longitudinal direction of the unit frame. Fixed protrusions are protruded, and the lower crosspiece member is constructed so as to span the fixed protrusions facing each other in the unit frames adjacent in the X direction.

The mounting bracket is provided with support means having an upward substantially U-shape with raised portions formed at both ends of a flat plate portion, and is constructed so that the lower portion of the unit frame can be freely inserted between the raised portions.

Therefore, side fixing means can be provided for detachably fixing the standing portion and the unit frame to each other, and bottom fixing means can be provided for detachably fixing the flat plate portion and the unit frame to each other. .

ADVANTAGE OF THE INVENTION According to the present invention, it is possible to provide a construction method and apparatus for a sidewalk protection gantry which can have strength comparable to that of a steel-framed sidewalk protection gantry and which is excellent in construction workability, cost, and the like. .

FIG. 2 is a perspective view showing a first scaffolding structure and a second scaffolding structure constructed by a scaffolding construction process in relation to the construction method of the footpath protection gantry of the present invention; FIG. 4 is a perspective view showing a gantry structure constructed by a gantry construction process; FIG. 10 is a perspective view showing a sidewalk protection gantry constructed through a unit frame mounting process, a roof substrate forming process, a roofing material laying process, and a roofing material holding process; It is a perspective view which shows the implementation method of a scaffold construction process. FIG. 10 is a perspective view showing a state in which the scaffolding structure is provided with the beam means in relation to the gantry construction process. FIG. 4 is a perspective view showing the beam means in an exploded state; FIG. 2 shows a state in which mounting brackets are attached to beam means in a unit frame mounting step according to the first aspect of the present invention, FIG. It is a diagram. (A) is a perspective view showing a state in which the unit frame is being attached to the beam means, (B) is a side view of the unit frame, and (C) is a cross-sectional view taken along the line AA, with respect to the unit frame attaching step of the first invention. . FIG. 4 is a perspective view showing the mounting bracket provided on the beam means and the unit frame in a separated state in relation to the first invention. FIG. 4 is a perspective view showing a state in which a unit frame mounting process, a rectangular frame forming process, and a roof substrate forming process have been performed on the gantry structure; FIG. 4 is a perspective view showing a pair of end frames and a lower rail member; FIG. 4 is a perspective view showing a connecting portion between a unit frame and an end frame on the base end side of the gantry; FIG. 4 is a perspective view showing a connecting portion between the unit frame and the end frame on the tip side of the gantry; It is a perspective view which shows a roof material laying process. FIG. 4 is a perspective view showing a state in which the roof material is supported on the tip side of the gantry; It is a perspective view which shows a roof material holding process. It is a perspective view which shows an upper crosspiece member. FIG. 4 is a perspective view showing a state in which a roof material is held on the tip side of the gantry; FIG. 10A is a perspective view showing a state in which the movable frame is attached to the beam means, and FIG. 8B is a perspective view showing the jack means, showing the step of forming the inclined structure in relation to the second invention of the present invention. In the second invention, in the step of attaching the unit frame to the movable frame, it shows a state in which the mounting bracket is attached to the movable frame, (A) is a perspective view showing the entire movable frame, and (B) is a perspective view showing the mounting bracket. It is a diagram. FIG. 12 is a perspective view showing a state in which a mounting bracket provided with jack means is faced to the upper portion of the beam means in relation to the third invention of the present invention; 8A is a perspective view showing a step of forming an inclined structure and a step of attaching a unit frame, and FIG. 8B is a perspective view showing a mounting bracket provided with a jack means, with respect to the third invention. FIG. 11 is a perspective view of a unit frame in the third invention; FIG. 11 is a cross-sectional view of a unit frame in the third invention; FIG. 12 is a cross-sectional view showing side fixing means and bottom fixing means for fixing the mounting bracket and the unit frame to each other in relation to the third invention; FIG. 26 is a cross-sectional view taken along the line BB of FIG. 25; 8A is a perspective view showing a state in which the unit frame is attached and fixed to the mounting bracket, and FIG. 8B is a perspective view showing a state in which the unit frame is broken, with respect to the third invention. Regarding the bottom fixing means of the third invention, (A) and (B) are a perspective view and a cross-sectional view showing the state before fixing, respectively, and (C) and (D) are a perspective view and a cross-sectional view showing the fixed state, respectively. be.

Preferred embodiments of the present invention will be described in detail below with reference to the drawings.

1 to 18 show a method of constructing a footpath protection gantry including all steps from a scaffold construction step to a roof material holding step, and a construction apparatus for carrying out the construction method, relating to the first aspect of the present invention. there is

On the other hand, FIGS. 19 and 20 show a tilting structure forming process, a unit frame mounting process, and an apparatus for carrying out these processes in relation to the second invention of the present invention.

21 to 28 show a tilting structure forming step, a unit frame attaching step, and an apparatus for carrying out these steps in relation to the third aspect of the present invention. 4 shows a configuration, another embodiment of the side fixing means and an embodiment of the bottom fixing means;

(First invention)
As shown in FIG. 1, in an environment in which a sidewalk P faces a construction site W, first first roads extending in the X direction are placed on both sides of the sidewalk P in the X direction along the sidewalk and the Y direction intersecting the sidewalk. A scaffold structure 1a and a second scaffold structure 1b are constructed (scaffold construction step). Normally, the first scaffolding structure 1a is constructed on the site of the construction site W, and the second scaffolding structure 1b is constructed on one side of the sidewalk opposite to the first scaffolding structure 1a, but it is not limited to this.

Hereinafter, for convenience of explanation, of the Y directions, the direction toward the construction site W is defined as a proximal direction Y1, and the opposite direction is defined as a distal direction Y2. The side scaffolding structure will be described as a second scaffolding structure 1b.

The first scaffolding structure 1a and the second scaffolding structure 1b, as shown in FIG. The gantry structure M is constructed by arranging the beam means 2, 2 with an interval in the X direction (gantry construction step).
After that, a unit frame mounting process, a roof substrate forming process, a roofing material laying process, a roofing material holding process, etc., which will be described later, are carried out, and as a result, the sidewalk protection gantry N, which is the intended object as shown in FIG. 3, is constructed and completed. do.

As shown in the figure, the sidewalk protection gantry N constitutes a high-strength rigid structure with a frame made up of a large number of frame members. As will be described later, the canopy Na that covers the overhead of passersby coming and going on the sidewalk is constructed by fixing and supporting a roof panel on a beam frame by means of a unit frame and crosspiece members that are integrally connected to the unit frame. Therefore, even if the falling object is heavy, it will not pass through the canopy Na and can be reliably prevented from falling onto the sidewalk. In addition, the framework tower structures Nb and Nb are provided by the first scaffolding structure 1a and the second scaffolding structure 1b, and the canopy Na is supported thereon, so that a highly rigid structure is constructed as a whole. It can be used as an evacuation site to ensure the safety of passers-by even in the event of a storm such as a typhoon.

(Scaffolding construction process)
As shown in FIG. 4, the first scaffolding structure 1a and the second scaffolding structure 1b are formed by using temporary scaffolding that is widely used at construction sites and the like. In the case of the figure, two supporting columns 3a and 3b spaced apart in the Y direction are arranged as one pair of supporting columns 3, and the supporting columns 3 and 3 are spaced apart in the X direction. It is constructed by connecting via connecting means 4 including scaffolding boards 4a.

As a result, the scaffolding structures 1a, 1b form rigid framework tower structures Nb, Nb as shown in FIG. Moreover, like a temporary scaffold, it provides a working floor for subsequent construction work. In addition, in the case of the figure, a wedge binding type scaffolding is illustrated, but a framework scaffolding may be adopted.

(Gantry construction process)
The first scaffolding structure 1a and the second scaffolding structure 1b are connected by the beam means 2 to form a gantry structure M. As shown in FIG. At this time, as shown in FIGS. 5 and 6, the beam means 2 is formed by a beam frame 5 framed by a pipe material such as a steel pipe.

The beam frame 5 is preferably composed of a long exclusive beam frame 5M and a short extension beam frame 5S. As shown in the figure, the extension beam frame 5S is connected to the exclusive beam frame 5M. By doing so, the entire length of the beam frame body 5 can be extended. Thereby, the first scaffolding structure 1a and the second scaffolding structure constructed with an interval corresponding to the width of the sidewalk P are constructed. It is possible to suitably connect the bodies 1b to each other.

In the case of the figure, the connecting structure of the dedicated beam frame 5M and the extension beam frame 5S employs flange-type wedge fastening means used in temporary scaffolding, but is not limited to this. .

(Unit frame mounting process)
As shown in FIGS. 7 to 9, the upper part of the beam means 2 on which the gantry structure M is constructed, that is, the upper frame 5a of the beam frame body 5, is provided with mounting brackets 6 along the upper frame. A unit frame 7 extending in the Y direction is attached and fixed via a mounting bracket 6 .

As shown in FIG. 7, the mounting bracket 6 includes a clamping means 8 which grips and fastens the upper frame 5a of the beam frame body 5, and is mounted on the clamping means 8 so as to be rotatable about the vertical axis. support means 9 are provided.

The support means 9 is formed in an upward substantially U-shape by bending upright portions 9b, 9b at both ends of a flat plate portion 9a, and is provided with a pin hole 9c passing through the upright portions 9b, 9b. there is

The unit frame 7 is composed of a mold material extruded from a metal material such as aluminum, and as shown in FIGS. An upper lateral wall 12, a lower lateral wall 13, and an intermediate lateral wall 14 are integrally formed in each part so as to intersect each other. The groove 16 is opened to the side and is formed to have a cross-section of a substantially royal shape.

The vertical wall 11 has a locking hole 17 formed by an elongated hole extending in the longitudinal direction of the unit frame 7 at the groove bottom of the connecting groove 16 . They are arranged in rows with a gap in the direction.

The mounting bracket 6 and the unit frame 7 are mutually formed so that the lower lateral wall 13 of the unit frame 7 is fitted into the substantially U-shaped support means 9 of the mounting bracket 6. The unit frame 7 is fixedly supported by the support means 9 by inserting the locking pin 18 into the pin hole 9c of the support means 9 in the fitting 6 and the locking hole 17 of the vertical wall 11 of the unit frame 7. A part fixing means 10A is constructed.

As a result, as shown in FIG. 8A, the unit frame 7 is attached and fixed via the mounting bracket 6 over substantially the entire length of the upper frame 5a of the beam frame 5. As shown in FIG.

(unit frame)
As shown in FIGS. 8 and 9, the unit frame 7 is formed by joining a long dedicated unit frame 7M arranged in the proximal direction Y1 and a short extension unit frame 7S arranged in the distal direction Y2. By extending, the upper frame 5a of the beam frame 5 as a whole is configured to be attached and fixed over substantially the entire length.

For this reason, a joint means is provided to connect the joint ends of the dedicated unit frame 7M and the extension unit frame 7S. The joint means is configured such that a joint member 19 projecting from one of the frames 7 is inserted into the joint groove 16 of the other frame 7 . In the illustrated embodiment, as shown in FIG. 9, one frame 7S has a pair of joint members 19, 19 fixed to connecting grooves 16, 16 on both sides of the vertical wall 11 extending from the end of the frame 7S. The joint members 19, 19 project into the connecting grooves 16, 16 of the other frame 7M to sandwich the vertical wall 11, and the joint member 19 and the vertical wall 11 communicate with each other. Pins (not shown) are configured to be inserted into 19a and 11a.

The unit frame 7 has a multi-purpose function that enables unitization with other members. As described above, the lower lateral wall 13 has the function of being fixedly supported by the mounting bracket 6 by cooperating with the locking hole 17 at the bottom of the connecting groove 16 . Further, the connecting groove 16 has a function of connecting the external fittings of the lower rail members in the roof substrate forming process to be described later. It is made to protrude outside the connection groove 16 from the part.

Further, the holding groove 15 of the unit frame 7 has a function of inserting the side edge portion of the roof panel in the roofing material laying process, which will be described later. Furthermore, the upper lateral wall 12 has a function of connecting the upper rail member in the roofing material holding process described later, and is positioned above the fixing projection 20 to A socket member 21 is provided on one side, and a fitting 22 is provided on the other side. The socket member 21 forms a rectangular tubular insertion space above the upper lateral wall 12 . The mounting bracket 22 has two plate portions with an open top, and a hole 22a passing through the plate portions.

(Rectangular frame forming process and roof substrate forming process)
After the unit frames 7 are attached to the gantry structure M in the unit frame attachment step, as shown in FIG. The first end frame 23 connects them to each other, and the ends in the leading end direction Y2 are connected to each other by a second end frame 24, thereby forming a rectangular frame as a whole (rectangular frame forming step).

In addition, the lower parts of the unit frames 7, 7 which are located between the end frames 23, 24 and which are adjacent in the X direction are connected to each other via the fixed protrusions 20 provided in the connecting grooves 16. 25, and a plurality of lower crosspiece members 25 are arranged at intervals in the Y direction (roof substrate forming step).

As shown in FIG. 11 , the first end frame 23 and the second end frame 24 are formed by an elongated shape member 27 having grooves 26 . A fixing metal fitting 28 formed in a horizontal U-shape is fixed to the side, and a locking pin 29 is provided on the fixing metal fitting 28 . The first end frame 23 and the second end frame 24 have the same configuration, but are arranged to face each other symmetrically, and the grooves 26 are opposed to each other.

As shown in FIG. 11, the lower crosspiece member 25 is made of a square pipe material, and has external fittings 30 formed in a horizontal U-shape fixed to both ends thereof. The tongue pieces 31, 31 are extended and a locking pin 32 is provided.

12 shows the end portion of the unit frame 7 in the proximal direction Y1, and FIG. 13 shows the end portion thereof in the distal direction Y2. ing.

As shown in FIGS. 12 and 13 , in the end frames 23 and 24 , the end portions of the mold members 27 are fitted into the holding grooves 15 of the unit frame 7 together with the fixing metal fittings 28 . By lowering the locking pin 29 that was lifted during fitting, the locking pin is engaged with the hole 12a formed in the upper lateral wall 12 of the unit frame 7 and the hole 28a (see FIG. 11) formed in the fixture 28. 29 are inserted and fixed to each other.

The lower rail member 25 is formed on the tongues 31, 31 in a state in which the external fitting 31 is externally inserted onto the fixed projection 20 of the unit frame 7, and the tongues 31, 31 sandwich the fixed projection 20 from above and below. 11) and a hole 20a (see FIG. 9) formed in the fixing protrusion 20. The locking pin 32 is inserted through the hole 31a (see FIG. 11) formed in the fixed protrusion 20, and is locked and fixed to each other.

(Roofing material laying process)
Subsequently, as shown in FIG. 14, between the unit frames 7, 7 adjacent in the X direction, a plurality of roof panels 33 overlap each other in the X direction and the Y direction on the lower crosspiece member 25. It is laid in the state (roofing material laying process).

The roof panel 33 can use a corrugated sheet made of resin, but is preferably made of FRP or other reinforced resin. The side edges 33x are fitted into the holding grooves 15 of the unit frame 7, and the Y-direction end edges 33y are fitted into the grooves 26 of the end frames 23 and 24. As shown in FIG.

(Roof material holding process)
After that, on the laid roof panel 33, the upper parts of the unit frames 7, 7 adjacent in the X direction are connected to each other by the upper crosspiece members 34, and the plurality of upper crosspiece members 34 are arranged at intervals in the Y direction. By doing so, the roof panel 33 is held (roof material holding step).

As shown in FIG. 17, the upper rail member 34 is formed of a square pipe material, and has a first insertion piece 34a and a second insertion piece 34b projecting from both ends thereof. A locking pin 35 is provided, and a pressing piece 36 formed by bending a metal plate into a V shape is fixed to the lower surface of the square pipe material. At this time, two pressing pieces 36, 36 are arranged as one set near both ends of the upper rail member 34, and the one pair of pressing pieces 36, 36 are arranged on both inclined surfaces of the corrugation troughs of the roof panel 33. It is preferable to configure it along 33a, 33a.

When attaching the upper rail member 34, as shown in FIG. 18, the unit frames 7, 7 adjacent in the X direction are installed with the socket member 21 and the mounting bracket 22 facing each other. there is Therefore, the upper rail member 34 first inserts the second insertion piece 34b into the socket member 21 of one unit frame 7 (lower unit frame in the drawing), and then inserts the first insertion piece 34a into the other unit frame 7. (the upper unit frame in the drawing) is fitted between the two plate portions of the mounting bracket 22, and the hole 34c (see FIG. 17) of the first insertion piece 34a and the hole 22a (see FIG. 9) of the mounting bracket 22 ) by inserting the locking pin 35 into it.

As described above, the fixing protrusion 20 for connecting and fixing the lower rail member 25, and the socket member 21 and the mounting bracket 22 for connecting and fixing the upper rail member 25 are arranged vertically corresponding to each other. The panel 33 is sandwiched between the lower rail member 25 and the upper rail member 34 . At this time, the upper crosspiece member 34 preferably holds the corrugated slope of the roof panel 33 with the pressing piece 36 .

(Sideway protection gantry)
Through the above steps, the construction of the sidewalk protection gantry N shown in FIG. 3 is completed. The first scaffolding structure 1a and the second scaffolding structure 1b that provide the framework tower structure Nb can be constructed simply and easily by following a conventionally known temporary scaffolding construction method.

Then, after the gantry structure M is constructed by the gantry construction process of constructing the beam frame 5 on the first scaffold structure 1a and the second scaffold structure 1b, and the unit frames 7 are attached by the unit frame attachment process, Centering on the unit frame 7, the arrangement of the end frames 23 and 24 (rectangular frame forming process), the arrangement of the lower crosspiece member 25 (roof substrate forming process), and the laying of the roof panel 33 (roofing material laying process) ) and arrangement of the upper rail member 34 (roof material holding step), the work efficiency is good and the construction cost is low.

Moreover, each member (the end frames 23 and 24, the lower crosspiece member 25, the roof panel 33, and the upper crosspiece member 34) are all assembled to the unit frame 7 to form a unit. , the production efficiency of the members is high, the manufacturing cost is low, and the management of the members during construction and dismantling is easy.

(Second invention)
19 and 20 show some steps in the second invention of the present invention.

As described above, in the case of the first invention, (A) scaffold construction process, (B) gantry construction process, (C) unit frame installation process, (D) roof base formation process, (E) roof material laying process, ( F) The roof material holding step, and the second invention includes (C1) a sloped structure forming step and (C2) a unit frame between the (B) gantry building step and (D) roof substrate forming step. It constitutes an attachment process, and is different from the first invention in this respect.

That is, in the case of the second invention, after the gantry structure M is constructed by the gantry construction process, the movable frame 38 that can be tilted downward in the Y direction along the upper frame 5a of the beam frame 5 via the jack means 37. is attached (inclined structure forming step), and subsequently, the unit frame 7 extending in the Y direction is attached and fixed along the upper portion of the movable frame 38 via the mounting bracket 6 (unit frame attaching step). The subsequent steps of forming the roof substrate, laying the roofing material, and holding the roofing material are the same as those of the above-described first embodiment of the invention.

(Tilted structure forming step)
As shown in FIG. 19, jacking means 37 are arranged in a row by using the upper openings of the vertical frames 5b which are fixed at intervals in the longitudinal direction of the upper frame 5a of the beam frame body 5. A movable frame 38 is attached to the means 37 (inclined structure forming step).

As shown in FIG. 19B, the jack means 37 includes a jack portion 37a in which a nut is screwed onto the bolt shaft, and a clamping means 37b provided above the bolt shaft. The lower end of the downwardly inserted bolt shaft is inserted into the upper opening of the vertical frame 5b, and the nut is mounted on the edge of the upper opening. Therefore, the movable frame 38 is attached by being gripped and fastened by the clamp means 37b of the jack means 37 arranged in a line.

When the nut of the jack means 37 is rotated, the bolt shaft is vertically screwed to move the clamp means 37b up and down. can tilt the axis L2 of the movable frame 38 to a predetermined angle θ.

As a result, as shown in FIG. 19A, the movable frame 38 can be tilted downward toward the leading end direction Y2 in the Y direction, and the tilt angle .theta. Configure the roof slope to allow rainwater to run down. Incidentally, according to the structure in which the jack means 37 are arranged in rows, it is possible to tilt downward in the direction opposite to that shown in the drawing, that is, toward the base end direction Y1. can be selected.

(Unit frame mounting process)
In the second invention, as a matter of course, as shown in FIG. (unit frame attachment step).

The configurations of the mounting bracket 6 and the unit frame 7 are the same as those of the above-described first invention, so description thereof will be omitted.

(Third invention)
21 to 28 show some steps in the third invention of the present invention.

As described above, in the case of the first invention, (A) scaffold construction process, (B) gantry construction process, (C) unit frame installation process, (D) roof base formation process, (E) roof material laying process, ( F) Roof material holding step, but the third invention is comprised of (C1) inclined structure forming step and (C2) unit frame between (B) gantry building step and (D) roof base forming step. It constitutes an attachment process, and is different from the first invention in this respect.

That is, in the case of the third invention, after the gantry structure M is constructed by the gantry construction process, the mounting brackets 6 provided with the jack means 37 are arranged in rows along the upper part of the beam frame 5, and the mounting brackets arranged in rows are arranged. 6 are arranged so that their heights are along the slope line L3 that slopes downward toward the sidewalk (tilt structure forming step), and in this state, the unit frame 7 extending in the Y direction is aligned along the slope line L3. It is mounted and fixed by the mounting bracket 6 (unit frame mounting process).

Therefore, in the inclined structure forming process of the third invention, the movable frame 38 as in the second invention is not used, and a device in which the jack means 37 and the mounting bracket 6 are integrated is used.

The roof substrate forming process, the roofing material laying process, and the roofing material holding process, which are carried out after the unit frame attaching process, are the same as those in the above-described embodiment of the first invention.

As shown in FIG. 22(B), the jack means 37 comprises a jack portion 37a in which a nut is screwed onto the bolt shaft. It is provided so as to be fixable (Fig. 25). The mounting bracket 6 is composed of a support means 9 which is formed in an upward substantially U-shape by bending upstanding portions 9b, 9b at both ends of a flat plate portion 9a.

(Tilted structure forming step)
As shown in FIGS. 21 and 22(A), the jack means 37 provided with the mounting bracket 6 attaches the lower end of the bolt shaft inserted downward through the nut to the vertical frame 5b of the beam frame body 5. It is installed by inserting it into the top opening and resting the nut on the opening edge of the top opening. At this time, as shown in the figure, the tops of all the vertical frames 5b of the beam frame 5 are formed so as to be open, and by selecting a desired opening, the jack means 37 can be installed at an arbitrary position. is preferred.

In this state, when the nut of the jack means 37 is rotated, the bolt shaft is vertically screwed to move the mounting bracket 6 up and down. The height of the mounting bracket 6 is aligned along the inclined line L3 inclined downward at a predetermined angle θ toward the sidewalk (inclined structure forming step). At this time, the mounting bracket 6 is fixed on the jack means 37 in a state in which the rotational attitude is adjusted around the horizontal axis R, and the flat plate portion 9a is made to follow the inclined line L3.

(Unit frame mounting process)
Therefore, the unit frame 7 is mounted and fixed on the mounting bracket 6 in a state of being oriented in the Y direction and along the inclined line L3 (unit frame mounting process). As a result, the unit frame 7 is tilted downward toward the tip end direction Y2 in the Y direction. enable. According to the construction of the jack means 37, it is possible to tilt in the direction opposite to that shown in the drawing, that is, to tilt downward toward the base end direction Y1. can be done.

(another embodiment regarding the unit frame)
23 and 24 show another embodiment of the unit frame 7. FIG. The unit frame 7 is composed of a mold member extruded from a metal material such as aluminum. An upper holding groove 15 and a lower connecting groove 16 are provided on both sides, and the holding groove 15 is opened sideways. It has features different from the invention.

The vertical wall 11 forms branch walls 40, 40 branching to the left and right via a step wall 39 facing the holding groove 15 in the vicinity of the lower end thereof. 41 is formed.

A connecting groove 16 formed by laterally extending the lower lateral walls 13, 13 from the lower ends of the branch walls 40, 40 is formed by erecting the side walls 42 from the ends of the lower lateral wall 13. A trough 16 a is formed between the branch walls 40 , and the trough 16 a opens upward toward the holding groove 15 . In addition, it is preferable to form an inward rib-shaped wall 42a at the upper end of the side wall 42. As shown in FIG.

By forming such gutter grooves 16a, rainwater overflowing from the side edge portions 33x of the roof panel 33, when the side edge portions 33x of the roof panel 33 are fitted into the holding grooves 15, as indicated by the dashed line in FIG. It is preferably received by the grooves 16a and drained along the gutter grooves 16a by the downward slope of the inclination angle θ.

Further, the gutter 16a can serve to form joint means for connecting the joint ends of the dedicated unit frame 7M and the extension unit frame 7S, as shown in FIG. The joint member 19 can be easily and easily protruded from the frame 7 by inserting it into the gutter groove 16a of one frame 7 and fixing it. By inserting the joint member 19 into the gutter groove 16a of the other frame 7, the joint member 19 and the gutter groove 16a can be preferably connected without rattling. At this time, the joint member 19 is formed of a groove-shaped member as shown in the drawing, and is configured so as not to block the drain channel of the gutter groove 16a.

In order to carry out the roof substrate forming step described above with respect to the first invention, that is, to enable the lower parts of the adjacent unit frames 7, 7 to be connected to each other by the lower crosspiece members 25, the unit frames 7 are provided with the side walls 42. A fixing protrusion 20 as a plug means is fixed to the fixing protrusion 20, and the outer fitting 30 of the lower rail member 25 as described above is connected to the fixing protrusion 20. As shown in FIG.

(another embodiment for lateral fixation means)
In the case of the embodiment shown in FIG. 22(B), FIGS. It is composed of a push bolt 43 penetrating from the outside to the inside of the portion 9b. The pushing bolt 43 is screwed into a nut 44 fixed to the outer surface of the standing portion 9b. are pressed against the side wall 42 to fix the upright portion 9b and the side wall 42 to each other.

(bottom fixing means)
According to the configuration in which the locking groove 41 is formed in the unit frame 7, it is possible to provide the bottom fixing means 10B for detachably fixing the flat plate portion 9a of the mounting bracket 6 and the locking groove 41 to each other.

As shown in FIGS. 24 and 28B, the locking groove 41 of the unit frame 7 is formed so as to narrow the width of the opening by protruding lips 41a inward from both edges of the downward opening. The opening width W1 is formed so as to satisfy W2>W1 with respect to the groove width W2 inside the locking groove 41. As shown in FIG. Accordingly, a locking step portion 41b is formed inside the locking groove 41 by the lip 41a.

On the other hand, the support means 9 in the mounting bracket 6 has an insertion hole 45 in the flat plate portion 9a that communicates with the locking groove 41 while supporting the unit frame 7. As shown in FIG. The insertion hole 45 is formed by an elongated hole extending in the longitudinal direction of the locking groove 41, and as shown in FIG. , and the dimension W4 in the lateral direction is formed so that W4≧W1.

A fixing bolt 46 having a head portion 47 which is detachably engaged with the insertion hole 45 and the engagement groove 41 thus formed is provided, thereby constituting the bottom fixing means 10B.

As shown in FIG. 28(B), the head 47 of the fixing bolt 46 has a shape in which a pair of corners located on a diagonal line are cut off from a generally rectangular shape in plan view. W5 is formed so as to satisfy W2≧W5>W1, and width W6 is formed so as to satisfy W1≧W6.

According to such a configuration, the unit frame 7 is mounted on the support means 9 of the mounting bracket 6, and the opening of the locking groove 41 and the insertion hole 45 of the flat plate portion 9a are aligned and communicated with each other. 28A and 28B, the head 47 of the fixing bolt 46 is inserted into the locking groove 41 from below the flat plate portion 9a, and then, as shown in FIGS. 28C and 28D. As shown, when the fixing bolt 46 is rotated by approximately 90 degrees, the head portion 47 is locked to the locking stepped portion 41b. Therefore, by screwing a nut 49 onto the screw shaft portion 48 of the fixing bolt 46 in this state, the bottom portion of the unit frame 7 can be fastened to the flat plate portion 9 a of the support means 9 .

W Construction site P Sidewalk M Gantry structure N Sidewalk protection gantry Na Canopy Nb Frame tower structure 1a First scaffolding structure 1b Second scaffolding structure 2 Beam means 3 Struts 3a, 3b Struts 4 Connecting means 4a Scaffolding board 5 Beams Frame 5M Dedicated beam frame 5S Extension beam frame 5a Upper frame 5b Vertical frame 6 Mounting bracket 7 Unit frame 7M Dedicated unit frame 7S Extension unit frame 8 Clamp means 9 Support means 9a Flat plate portion 9b Standing portion 9c Pin hole 10A Side fixing means 10B Bottom fixing means 11 Vertical wall 11a Locking hole 12 Upper horizontal wall 12a Hole 13 Lower horizontal wall 14 Intermediate horizontal wall 15 Holding groove 16 Connecting groove 16a Gutter groove 17 Locking hole 18 Locking pin 19 Joint member 19a Locking hole 20 Fixing projection 21 Socket member 22 Mounting metal fitting 22a Hole 23 First end frame 24 Second end frame 25 Lower crosspiece member 26 Groove 27 Mold member 28 Fixing metal fitting 28a Hole 29 Locking pin 30 External fitting 31 Tongue 31a Hole 32 Locking pin 33 Roof panel 33x Side edge 33y Edge 33a Inclined surface 34 Upper crosspiece members 34a, 34b Insertion piece 34c Hole 35 Locking pin 36 Pressing piece 37 Jacking means 37a Jacking part 37b Clamping means 38 Movable frame 39 step wall 40 branch wall 41 locking groove 41a lip 41b locking stepped portion 42 side wall 42a rib-like wall 43 push bolt 44 nut 45 insertion hole 46 fixing bolt 47 head 48 screw shaft portion 49 nut

Claims (9)

A method of constructing a protective platform for protecting passers-by on the sidewalk from objects falling on the sidewalk facing a construction site.
(A) a scaffolding construction step of constructing a scaffolding structure extending in the X direction and constructing a first scaffolding structure (1a) and a second scaffolding structure (1b) on both sides of the sidewalk;
(B) The first scaffolding structure and the second scaffolding structure are connected by a beam means (2) extending in the Y direction at a height position that does not hinder the traffic of passers-by, and a plurality of beam means are spaced apart in the X direction. A gantry construction process for constructing a gantry structure (M) by arranging with a gap between
(C) a unit frame mounting step of mounting and fixing a unit frame (7) extending in the Y direction along the upper part of the beam means via a mounting bracket (6);
(D) A roof base in which the lower parts of unit frames (7, 7) adjacent in the X direction are connected to each other by lower crosspiece members (25), and a plurality of lower crosspiece members are spaced apart in the Y direction. a forming step;
(E) Between the unit frames (7, 7) adjacent in the X direction, a plurality of roof panels (33) are laid on the lower crosspiece member in an overlapping state, and the roof panel side a roof material laying step of fitting the edge (33x) into the holding groove (15) of the unit frame;
(F) The upper parts of the unit frames (7, 7) adjacent in the X direction are connected to each other by an upper crosspiece member (34), and a plurality of upper crosspiece members are spaced apart in the Y direction to form a roof panel. a step of holding the roofing material to be held;
A method for constructing a footpath protection gantry, comprising: A method of constructing a protective platform for protecting passers-by on the sidewalk from objects falling on the sidewalk facing a construction site.
(A) a scaffolding construction step of constructing a scaffolding structure extending in the X direction and constructing a first scaffolding structure (1a) and a second scaffolding structure (1b) on both sides of the sidewalk;
(B) The first scaffolding structure and the second scaffolding structure are connected by a beam means (2) extending in the Y direction at a height position that does not hinder the traffic of passers-by, and a plurality of beam means are spaced apart in the X direction. A gantry construction process for constructing a gantry structure (M) by arranging with a gap between
(C1) an inclined structure forming step of attaching a movable frame (38) that can be inclined downward toward the sidewalk via jack means (37) along the upper part of the beam means;
(C2) a unit frame mounting step of mounting and fixing a unit frame (7) extending in the Y direction along the upper portion of the movable frame via mounting brackets;
(D) A roof base in which the lower parts of unit frames (7, 7) adjacent in the X direction are connected to each other by lower crosspiece members (25), and a plurality of lower crosspiece members are spaced apart in the Y direction. a forming step;
(E) Between the unit frames (7, 7) adjacent in the X direction, a plurality of roof panels (33) are laid on the lower crosspiece member in an overlapping state, and the roof panel side a roof material laying step of fitting the edge (33x) into the holding groove (15) of the unit frame;
(F) The upper parts of the unit frames (7, 7) adjacent in the X direction are connected to each other by an upper crosspiece member (34), and a plurality of upper crosspiece members are spaced apart in the Y direction to form a roof panel. a step of holding the roofing material to be held;
A method for constructing a footpath protection gantry, comprising: A method of constructing a protective platform for protecting passers-by on the sidewalk from objects falling on the sidewalk facing a construction site.
(A) a scaffolding construction step of constructing a scaffolding structure extending in the X direction and constructing a first scaffolding structure (1a) and a second scaffolding structure (1b) on both sides of the sidewalk;
(B) The first scaffolding structure and the second scaffolding structure are connected by a beam means (2) extending in the Y direction at a height position that does not hinder the traffic of passers-by, and a plurality of beam means are spaced apart in the X direction. A gantry construction process for constructing a gantry structure (M) by arranging with a gap between
(C1) An inclined structure in which mounting brackets provided with jack means are arranged in rows along the upper part of the beam means, and the heights of the mounting brackets arranged in a row are aligned along an inclined line that inclines downward toward the sidewalk. a forming step;
(C2) a unit frame mounting step of mounting and fixing the unit frame (7) extending in the Y direction with the mounting bracket in a state along the inclined line;
(D) A roof base in which the lower parts of unit frames (7, 7) adjacent in the X direction are connected to each other by lower crosspiece members (25), and a plurality of lower crosspiece members are spaced apart in the Y direction. a forming step;
(E) Between the unit frames (7, 7) adjacent in the X direction, a plurality of roof panels (33) are laid on the lower crosspiece member in an overlapping state, and the roof panel side a roof material laying step of fitting the edge (33x) into the holding groove (15) of the unit frame;
(F) The upper parts of the unit frames (7, 7) adjacent in the X direction are connected to each other by an upper crosspiece member (34), and a plurality of upper crosspiece members are spaced apart in the Y direction to form a roof panel. a step of holding the roofing material to be held;
A method for constructing a footpath protection gantry, comprising: After the unit frame attaching step, there is a rectangular frame forming step of connecting both ends of the unit frames (7, 7) adjacent to each other in the X direction by means of a pair of end frames (23) and (24) extending in the X direction. is composed of
2 or 3, characterized in that, in the roof material laying step, the edge portion (33y) of the roof panel (33) is fitted into the groove portions (26) of the pair of end frames. 3. The construction method of the sidewalk protection platform according to 3. In the construction method of sidewalk protection gantry according to claim 1, 2, 3 or 4,
The unit frame (7) has an upper lateral wall (12) and a lower lateral wall (13) integrally formed at the upper and lower ends of the vertical wall (11), respectively, and located on both sides of the vertical wall (11). It is composed of a mold material having an upper holding groove (15) and a lower connecting groove (16), and the holding groove (15) is formed so as to open toward the side of the unit frame (7),
An apparatus for constructing a sidewalk protection gantry, characterized in that it is constructed such that a side edge (33x) of a roof panel (33) is fitted into the holding groove (15). The connecting groove (16) is formed to open toward the side of the unit frame (7), and fixed projections protrude from the connecting groove (16) at intervals in the longitudinal direction of the unit frame (7). The part (20) is protruding,
The unit frames (7, 7) adjacent to each other in the X direction are configured such that the lower crosspiece member (25) is constructed so as to extend over the fixed protrusions (20, 20) facing each other. The sidewalk protection gantry construction device according to claim 5. The connecting groove (16) constitutes a gutter (16a) opening upward toward the holding groove (15), and the gutter (16a) is spaced apart in the longitudinal direction of the unit frame (7). ) has a fixed protrusion (20) protruding from the outer side wall (42) of the
The unit frames (7, 7) adjacent to each other in the X direction are configured such that the lower crosspiece member (25) is constructed so as to extend over the fixed protrusions (20, 20) facing each other. The sidewalk protection gantry construction device according to claim 5. The mounting bracket (6) is provided with a support means (9) having an upward, substantially U-shaped configuration in which raised portions (9b) are formed at both ends of a flat plate portion (9a). The lower part of the frame (7) is configured so that it can be inserted freely,
8. The sidewalk protection gantry according to claim 5, 6 or 7, further comprising side fixing means (10A) for detachably fixing said standing portion (9b) and said unit frame (7) to each other. building equipment. The mounting bracket (6) is provided with a support means (9) having an upward, substantially U-shaped configuration in which raised portions (9b) are formed at both ends of a flat plate portion (9a). The lower part of the frame (7) is configured so that it can be inserted freely,
Construction of sidewalk protection gantry according to claim 5, 6 or 7, characterized in that bottom fixing means (10B) for detachably fixing said flat plate (9a) and unit frame (7) to each other is provided. Device.

Images