JP6218112B2 - Ceiling material fall prevention structure and construction method thereof - Google Patents

Description

  The present invention relates to a ceiling material fall prevention structure and a construction method thereof.

  For example, in a new ceiling construction or renovation work in a theater, it is necessary to install a fairly high scaffold over almost the entire floor surface that is stepped. As a result, in the case of theater ceiling renovation work, the performance must be stopped completely.

  By the way, in the previous Great East Japan Earthquake, there have been reports of cases where ceiling materials have fallen in various buildings. Therefore, a renovation work to prevent the ceiling material from falling without stopping the scheduled performance by the theater owners, that is, without actually building a scaffold (hereinafter referred to as “ceiling fail-safe construction”). There is a request that I want you to go.

  The present invention has been made in view of the above-described problems, and provides a ceiling material fall prevention structure capable of preventing the ceiling material from falling without substantially assembling a scaffold in a theater or the like, and a method for constructing the ceiling material fall prevention structure. The purpose is to do.

In order to solve the above-mentioned problem, the first embodiment of the present invention is a construction method for a ceiling material fall prevention structure for preventing the ceiling material from falling,
A first step of forming a pair of holes in the ceiling material;
A second step of passing the fall-preventing wire through one of the pair of holes and attaching one end of the fall-preventing wire to a support member above the ceiling; and
Using the construction wire suspended from the other of the pair of holes, the other end side of the fall prevention wire is passed through the other hole from below, and a required tension is applied to the fall prevention wire. And a third step of attaching the other end of the fall-preventing wire to the support member in a state in which a ceiling material fall-preventing structure is provided.

In the second embodiment of the present invention, the ceiling material fall prevention structure for preventing the ceiling material from falling,
A fall-preventing wire disposed so as to pass through a pair of holes formed in the ceiling material and extend along the lower surface of the ceiling material;
A ceiling comprising: an attachment member for attaching one end and the other end of the fall prevention wire to a support member above the ceiling in a state in which a required tension is applied to the fall prevention wire. Provide a material fall prevention structure.

  In the present invention, the fall prevention wire rod is provided with a required tension applied to the fall prevention wire rod arranged so as to pass through the pair of holes formed in the ceiling material and extend along the lower surface of the ceiling material. One end and the other end are attached to the support member above the ceiling material. Therefore, it is possible to reliably prevent the ceiling material from falling without substantially constructing a scaffold in a theater or the like.

BRIEF DESCRIPTION OF THE DRAWINGS It is a figure which shows schematically the whole structure of the ceiling material fall prevention structure concerning embodiment of this invention, Comprising: It is the top view which looked up at the ceiling surface from the bottom. It is a figure which shows a mode that a hole is formed in the required position of a ceiling board. It is a figure which shows a mode that the hollow member by which the end of the wire rod for fall prevention was temporarily fixed is pulled up to a required position by pulling up the construction wire. It is a figure which shows a mode that the end of the wire for fall prevention is attached to the support member above a ceiling board. It is a figure which shows a mode that the other end of the wire material for fall prevention is attached to the support member above a ceiling board. It is a figure which shows roughly the modification applied to the folded-plate surface-shaped ceiling. It is a figure which shows roughly the modification which attached the auxiliary | assistant fall prevention wire.

  Embodiments of the present invention will be described with reference to the accompanying drawings. FIG. 1 is a diagram schematically showing an overall configuration of a ceiling material fall prevention structure according to an embodiment of the present invention, and is a plan view of a ceiling surface looking up from below. In the present embodiment, the present invention is applied to, for example, preventing the fall of ceiling materials (ceiling boards, field edges, field edge receivers, etc.) in theaters. Specifically, in order to facilitate understanding of the invention, as shown in FIG. 1, a ceiling having a relatively simple configuration in which twelve rectangular ceiling plates 11 are vertically and horizontally attached along a plane. The present invention is applied.

  In FIG. 1, small circles denoted by reference numeral 12 are drawn vertically and horizontally at a pitch corresponding to the length of the long side of the ceiling board 11 or a pitch close thereto. The plurality of circles 12 correspond to the positions of the plurality of holes 1 formed in the ceiling board (and hence the ceiling material) 11 in the ceiling fail safe construction. A plurality of fall prevention wires 2 for preventing the ceiling material from falling are between a pair of circles 12 adjacent in the horizontal direction in FIG. 1 and between a pair of circles 12 adjacent in the vertical direction in FIG. Each extends linearly.

  For example, a fishing line having sufficient strength can be used as the fall prevention wire 2. In this embodiment, the attachment structure and the construction method of each fall prevention wire 2 extending linearly between the pair of holes 1 are basically the same. Therefore, paying attention to the attachment structure of one fall prevention wire 2 extending linearly between any pair of holes 1 and its construction method, the ceiling material fall prevention structure and its construction according to the present embodiment A method will be described.

  In the present embodiment, as shown in FIG. 2, the hole 1 is formed at a required position of the ceiling plate 11. In FIG. 2, a region where the hole 1 is to be formed in the ceiling plate 11 is covered with a container (cover member) 3 from below, and dust generated when the ceiling plate 11 is punched from above is collected in the container 3. That is, in the construction example shown in FIG. 2, the hole 1 is formed in the required position of the ceiling board 11 with the appropriate drilling tool using the work space above the ceiling board 11. At this time, the container 3 can be stably held at a required position when the hole 1 is formed by holding a support rod (not shown) extending downward from the bottom of the container 3 for collecting the dust.

  Further, when the distance from the floor to the ceiling plate 11 is relatively large and a perforated panel is used as the ceiling plate 11, the container 3 is stably held at a required position using the existing holes of the effective panel. can do. Specifically, for example, the lower ends of a pair of construction wires (for example, fishing lines) suspended from a pair of existing holes in the effective panel are tied to both ends of the container 3, and a pair of construction wires are installed from the work space above the ceiling plate 11. The container 3 can be positioned at a required position by pulling up the wire.

  When a pair of construction wires are tied to both ends of the container 3, it is desirable to attach a counterweight member extending downward from the bottom to the container 3 in order to pull up the container 3 while maintaining the required posture. When it is not necessary to collect the dust generated when the ceiling plate 11 is drilled, it is not necessary to use the container 3, and if possible, a method of drilling the ceiling plate 11 from below may be employed. .

  Next, in this embodiment, as shown in FIG. 3, the construction wire (for example, fishing line) 4 a is suspended from one hole 1 a of the pair of adjacent holes 1, and the tip of the construction wire 4 a is a hollow member. Tie to the top of 5a. The hollow member 5a has, for example, a cylindrical main body 5aa, and a trumpet-shaped lower end 5ab that gradually widens outward. One end of the drop-preventing wire 2 passes through the hollow member 5a and is temporarily fixed to the upper end thereof. In FIG. 3, for the sake of clarity of the drawing, the outer shape of the hollow member 5a and the drop preventing wire 2 penetrating the hollow member 5a are both shown by solid lines.

  In FIG. 3, two fall prevention wires 2 penetrating through the hollow member 5 a are depicted, but one of the fall prevention wires should pass through the hole on the right side of the hole 1 a along the horizontal direction in FIG. 3. The other is the wire 2 for prevention of fall which should penetrate the hole in the left side of the hole 1a along the horizontal direction in FIG. Considering the fall-preventing wire 2 that should pass through the hole on the near side of the hole 1a and the hole on the far side along the direction perpendicular to the plane of FIG. 3, the fall-preventing wire passing through one hollow member 5 The maximum value of the number of 2 is 4.

  In the present embodiment, as shown in FIG. 3, by pulling up the construction wire 4a from the work space above the ceiling plate 11, the hollow member 5a to which one end of the fall prevention wire 2 is temporarily fastened is pulled up and thus hollow. The member 5a is passed through the hole 1a from below. Specifically, as shown in FIGS. 3 and 4, the hollow member 5a is pulled up to a position where the lower end 5ab closes the hole 1a from below.

  And the construction wire 4a is removed from the hollow member 5a, and the upper end of the hollow member 5a is attached to the horizontal member 6a located above the ceiling board 11 as shown in FIG. The horizontal member 6a may be, for example, an existing member that constitutes a grape shelf, or may be a new member that is attached to an existing member. As an example, the hollow member 5a is fixedly attached to the flange of the horizontal member 6a by the cooperative action of a male screw portion and a nut formed at the upper end portion thereof.

  One end of the fall preventing wire 2 temporarily secured to the upper end of the hollow member 5a is removed from the hollow member 5a and wound around a relatively large outer diameter pipe member 7a attached to the horizontal member 6a, for example. The pipe member 8a having a relatively small outer diameter attached to the horizontal member 6a is fixedly attached. Specifically, one end of the drop preventing wire 2 may be tied to the pipe member 8a, or one end of the drop preventing wire 2 may be fixed to the pipe member 8a using an appropriate fixing member.

  Next, in the present embodiment, as shown in FIG. 3, the construction wire (for example, fishing line) 4b is suspended from the other hole 1b of the pair of adjacent holes 1, and the tip of the construction wire 4b is a hollow member. Tie to the top of 5b. The hollow member 5b has, for example, a cylindrical main body 5ba and a trumpet-shaped lower end portion 5bb which is gradually opened toward the outside, like the hollow member 5a through which one end side of the fall preventing wire 2 passes. The other end of the fall-preventing wire 2 having one end attached to the horizontal member 6a via the pipe members 7a and 8a passes through the hollow member 5b and is temporarily fastened to the upper end thereof.

  In the present embodiment, the other end of the fall-preventing wire 2 is temporarily secured by pulling up the construction wire 4b from the work space above the ceiling plate 11 as in the case of the work performed for one hole 1a. The hollow member 5b is pulled up, and consequently the hollow member 5b is passed through the hole 1b from below. Specifically, as shown in FIG. 5, the hollow member 5b is pulled up to a position where the lower end 5bb blocks the hole 1b from below. Then, the construction wire 4b is removed from the hollow member 5b, and the upper end of the hollow member 5b is attached to the horizontal member 6b located above the ceiling plate 11.

  Similarly to the horizontal member 6a, the horizontal member 6b may be, for example, an existing member constituting a grape shelf, or may be a new member attached to the existing member. Further, the horizontal member 6b may be the same member as the horizontal member 6a, or may be a member different from the horizontal member 6a. As an example, the hollow member 5b is fixedly attached to the flange of the horizontal member 6b by the cooperative action of the male screw portion and the nut formed at the upper end portion thereof.

  The fall-preventing wire 2 temporarily secured to the upper end of the hollow member 5b is wound around, for example, a relatively large outer diameter pipe member 7b attached to the horizontal member 6b, and then attached to the horizontal member 6b. The pipe member 8b having a relatively small outer diameter is fixedly attached. Specifically, as in the case of one end of the fall prevention wire 2, the other end of the fall prevention wire 2 may be tied to the pipe member 8b, or the fall prevention wire using an appropriate fixing member. The other end of 2 may be fixed to the pipe member 8b.

  At this time, with the required tension applied to the fall-preventing wire 2, the other end of the fall-preventing wire 2 is connected to the horizontal member 6b as a support member via the pipe members 7b and 8b as attachment members. It is important to install. Thus, the fall prevention wire 2 is disposed so as to pass through the pair of holes 1 a and 1 b formed in the ceiling plate 11 and to extend along the lower surface of the ceiling plate 11. And the fall prevention wire 2 is in a state where a required tension is applied, and one end and the other end of the fall prevention wire 2 are connected to the horizontal members 6a and 6b above the ceiling plate 11 via the pipe members 7a and 8a; 7b and 8b. Attached.

  As shown in FIGS. 4 and 5, the fall-preventing wire 2 to which a required tension is applied comes into contact with a smooth curved surface formed inside the lower end portion 5ab of the hollow member 5a on one hole 1a side, On the other side of the hole 1b, it comes into contact with a smooth curved surface formed inside the lower end 5bb of the hollow member 5b. In this way, when the required tension is applied to the fall prevention wire 2 by contacting the smooth curved surface formed inside the lower ends 5ab and 5bb of the hollow members 5a and 5b, the fall prevention wire 2 is provided. Can be prevented from being broken or broken by the pointed portions around the holes 1a and 1b of the ceiling plate 11.

  If necessary, one hollow member 5a through which one end side of the fall prevention wire 2 penetrates and the other hollow member 5b through which the other end side of the fall prevention wire 2 penetrates, for example, are appropriately extended in the horizontal direction. It can also be connected by an intermediate member (not shown). By attaching this intermediate member, the lower end portion 5ab of the hollow member 5a and the lower end portion 5bb of the hollow member 5b are stably held at the required positions, and as a result, the required tension applied to the fall prevention wire 2 is stabilized. Can be retained.

  In the present embodiment, the horizontal member 6a constitutes a support member to which one end of the drop preventing wire 2 penetrating the hollow member 5a is attached and to which the upper end of the hollow member 5a is attached. The horizontal member 6b constitutes a support member to which the other end of the drop preventing wire 2 penetrating the hollow member 5b is attached and to which the upper end of the hollow member 5b is attached. The pipe members 7a and 8a constitute an attachment member for attaching one end of the fall prevention wire 2 to the horizontal member 6a, and the pipe members 7b and 8b are for attaching the other end of the fall prevention wire 2 to the horizontal member 6b. The mounting member is configured.

  However, various modifications of the specific configurations of the support member and the attachment member are possible. Specifically, a mode in which the upper ends of the hollow members 5a and 5b are attached to the support member, one end of the drop preventing wire 2 penetrating the hollow member 5a and the other end of the drop preventing wire 2 penetrating the hollow member 5b are attached to the mounting member. Various modifications are possible with respect to the mode of attaching to the support member via the, the form of the support member and the attachment member.

  In the present embodiment, the above-described operation of stretching the fall-preventing wire 2 so as to pass through the pair of holes 1a and 1b formed in the ceiling plate 11 and extend along the lower surface of the ceiling plate 11 is performed as shown in FIG. The process is repeated for a pair of holes adjacent in the middle horizontal direction and a pair of holes adjacent in the vertical direction in FIG. As a result, as shown in FIG. 1, a plurality of fall prevention wires 2 for preventing the ceiling material from falling are stretched vertically and horizontally along the lower surface of the ceiling plate 11.

  As described above, in the present embodiment, the fall-preventing element is disposed so as to pass through the pair of holes 1a and 1b formed in the ceiling board (and thus the ceiling material) 11 and to extend along the lower surface of the ceiling board 11. One end and the other end of the fall preventing wire 2 are attached to the support members (6a, 6b) above the ceiling plate 11 in a state where a necessary tension is applied to the wire 2. Therefore, it is possible to reliably prevent the ceiling material from falling without substantially constructing a scaffold in a theater or the like. As a result, the theater owner does not need to cancel the scheduled performance during the ceiling fail-safe construction, can secure the performance revenue even during the construction period, and can avoid the risk of leaving the customer.

  In the above-described embodiment, twelve rectangular ceiling plates 11 are attached vertically and horizontally along a plane to form a planar ceiling. However, the present invention is not limited to this, and various forms are possible for the shape, number, arrangement, and ceiling surface shape of the ceiling plate. Moreover, in the above-mentioned embodiment, the plurality of holes 1 for penetrating the drop prevention wire 2 are formed vertically and horizontally at a pitch corresponding to the length of the long side of the rectangular ceiling plate 11 or a pitch close thereto. Yes. However, the present invention is not limited to this, and various forms are possible for the number and arrangement (pitch) of holes to be formed in the ceiling panel.

  For example, as shown in FIG. 6, the present invention can be similarly applied to a ceiling in which a plurality of ceiling plates 11 are attached in a folded plate shape instead of a flat shape. In this case, depending on the inclination of the ceiling surface, the lower end portion 51ab of the hollow member 51a through which one end side of the fall prevention wire 2 passes and the lower end portion 51bb of the hollow member 51b through which the other end side of the fall prevention wire 2 passes, The central axis of the main body 51aa of the hollow member 51a and the central axis of the main body 51ba of the hollow member 51b may be rotationally asymmetric.

  In the case of the modification of FIG. 6, if necessary, one hollow member 51a through which one end of the fall prevention wire 2 penetrates and the other hollow member 51b through which the other end of the fall prevention wire 2 penetrates, for example, It can be connected by a suitable intermediate member (not shown) extending in the horizontal direction. In the case of the modification of FIG. 6, in order to avoid breakage or breakage of the drop preventing wire 2 due to the protruding corner portion 52 of the ceiling surface, the pipe-shaped curing member 53 through which the drop preventing wire 2 penetrates The positioning may be performed so as to contact the portion 52.

  In addition, various forms are possible about the specific structure of the curing member for avoiding the breakage | damage or fracture | rupture of the wire 2 for fall prevention by the protrusion corner part 52. FIG. Moreover, in order to position and arrange the curing member so as to contact the protruding corner portion 52, an appropriate guide member may be used as necessary. As an example, for example, a guide member that can be pulled up using a construction wire suspended from a pair of holes in the ceiling plate 11 is used, and a curing member that is stably placed on the guide member is brought into contact with the protruding corner 52. After the positioning, a method of attaching the other end of the fall prevention wire 2 to the support member above the ceiling plate 11 may be used.

  Further, as shown in FIG. 7, in addition to the fall-preventing wire 2 stretched using a plurality of holes formed vertically and horizontally at a pitch corresponding to the length of the long side of the ceiling plate 11 or a pitch close thereto, Further, a modification in which auxiliary fall prevention wires (for example, fishing lines) 21 are attached using a plurality of holes formed vertically and horizontally at a pitch close to the length of the long side of the entire rectangular ceiling is also possible. . In FIG. 7, the fall prevention wire 2 according to the above-described embodiment is indicated by a solid line, and the auxiliary fall prevention wire 21 is indicated by a broken line.

  The attachment structure and construction method of the auxiliary fall prevention wire 21 are the same as the attachment structure and construction method of the fall prevention wire 2 according to the above-described embodiment, and redundant description is omitted. However, in consideration of the effect of gravity, the auxiliary fall prevention wire 21 stretched over a relatively large span is supported from below by the fall prevention wire 2 stretched over a relatively small span. It is desirable to configure as follows. In the modified example of FIG. 7, the ceiling material can be more reliably prevented from falling by the cooperative action of the fall preventing wire 2 and the auxiliary fall preventing wire 21.

  In the above-described embodiment and modification, for example, fishing lines are used as the fall prevention wire 2, the auxiliary fall prevention wire 21, and the construction wire 4. However, the present invention is not limited to this, and various forms are possible for the material of these wires.

  Moreover, in the above-mentioned embodiment, the hollow members 5a and 5b which the wire 2 for fall prevention penetrates are used. However, the present invention is not limited to this, and the use of the hollow members 5a and 5b can be omitted. In this case, for example, without using the construction wire 4a, the fall prevention wire 2 is passed from above (or below) through one hole 1a, and one end of the fall prevention wire 2 is connected to the support member 6a above the ceiling plate 11. Just attach it to Further, the other end side of the fall prevention wire 2 was passed from the lower side to the other hole 1b using the construction wire 4b suspended through the other hole 1b, and the required tension was applied to the fall prevention wire 2. In this state, the other end of the fall-preventing wire 2 may be attached to the support member 6b.

DESCRIPTION OF SYMBOLS 1; 1a, 1b Hole 2 Fall prevention wire 3 Waste collection container 4; 4a, 4b Construction wire 5a, 5b Hollow member 6a, 6b Support member 7a, 7b, 8a, 8b Pipe member 11 Ceiling plate 21 For auxiliary Fall prevention wire rod

Claims (14)

A construction method for a ceiling material fall prevention structure that prevents the ceiling material from falling,
A first step of forming a pair of holes in the ceiling material;
A second step of passing the fall-preventing wire through one of the pair of holes and attaching one end of the fall-preventing wire to a support member above the ceiling; and
Using the construction wire suspended from the other of the pair of holes, the other end side of the fall prevention wire is passed through the other hole from below, and a required tension is applied to the fall prevention wire. And a third step of attaching the other end of the fall-preventing wire to the support member in a state of providing a ceiling material fall-prevention structure construction method. The said 2nd process WHEREIN: The one end side of the said wire for prevention of fall is passed through said one hole from the downward direction using the construction wire drooped through said one hole. Construction method. In the second step, one end of the drop preventing wire passing through the first hollow member is temporarily fastened to an upper end of the first hollow member, and the first hollow member is attached to the one side from below using the construction wire. The construction method according to claim 2, wherein an upper end of the first hollow member is attached to the support member through the hole. In the second step, the one hole is closed from below by the lower end of the first hollow member, and the drop preventing wire is brought into contact with a smooth curved surface formed in the lower end. The construction method according to claim 3. In the third step, the other end of the fall preventing wire penetrating the second hollow member is temporarily fastened to an upper end of the second hollow member, and the second hollow member is attached from below using the construction wire. The construction method according to claim 1, wherein an upper end of the second hollow member is attached to the support member through the other hole. In the third step, the other hole is closed from below by the lower end of the second hollow member, and the drop preventing wire is brought into contact with a smooth curved surface formed in the lower end. The construction method according to claim 5. In the first step, a region where the hole is to be formed is covered with a container from below, and dust generated when the ceiling material is punched from above is collected in the container. The construction method according to any one of the above. The construction method according to any one of claims 1 to 7, wherein a wire rod having a shape of a fishing line is used as the fall prevention wire rod. A ceiling material fall prevention structure that prevents the ceiling material from falling,
A fall-preventing wire disposed so as to pass through a pair of holes formed in the ceiling material and extend along the lower surface of the ceiling material;
A ceiling comprising: an attachment member for attaching one end and the other end of the fall prevention wire to a support member above the ceiling in a state in which a required tension is applied to the fall prevention wire. Material fall prevention structure. The ceiling according to claim 9, further comprising a first hollow member disposed in a state in which one end side of the fall prevention wire is penetrated, wherein an upper end of the first hollow member is attached to the support member. Material fall prevention structure. 11. The ceiling according to claim 10, wherein the lower end of the first hollow member has a form that closes the one hole from below and has a smooth curved surface that comes into contact with the fall-preventing wire. Material fall prevention structure. The second hollow member disposed in a state in which the other end side of the fall prevention wire passes therethrough, and an upper end of the second hollow member is attached to the support member. The ceiling material fall prevention structure according to any one of the above items. The ceiling according to claim 12, wherein the lower end of the second hollow member has a form that closes the other hole from below and has a smooth curved surface that comes into contact with the fall-preventing wire. Material fall prevention structure. The ceiling material fall prevention structure according to any one of claims 9 to 13, wherein the fall prevention wire has a shape of a fishing line.

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