JP2011196088A - Folding-type curing and supporting structure suitable for crane handling specification - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a method which is excellent in working efficiency associated with carrying into and out of a job site and movement and storage in the job site, when roof curing, warming curing, etc. are performed by a combination of a general coupling single pipe and a synthetic resin curing sheet on a building and civil-engineering site, and which enables construction to be performed by making a general worker in the job site empirically and intuitively understand a structure and an assembling method in the case of a special or large-scale curing method.SOLUTION: Two rectangular curing and supporting structures comprise a rafter-like member and a combination of short-axis and long-axis materials or a member constituted by integrating the short-axis and long-axis materials together, so as to facilitate the carrying into and out of the job site and the movement and storage in the job site. The two rectangular curing and supporting structures are openably/closably constituted while being combined together in a folding screen shape by means of a hinge, so as to serve as a folding-type curing and supporting structure suitable for crane work.

Description

      The present invention relates to a curing support structure for building and civil engineering that can be easily carried in, assembled, moved, and carried out by crane work and has high versatility.

      Opportunities that require curing in construction and civil engineering work are diverse, ranging from the most versatile connected single-pipe pipes used as a curing support structure to those using large-scale steel structures. For this reason, the selection of materials is important in the provisional design plan and greatly affects the construction period and cost.

        Curing support using steel structure or membrane structure is often used for curing covering all or most of medium- and large-scale structures built on relatively shaped sites. For a structure or a small-scale structure, a curing support structure with a connected single pipe is generally applied.

As a case that makes it difficult to select a curing support structure, there is a linear structure whose length ranges from several hundred to several kilometers. Curing of linear structures such as waterways extending over several kilometers with a width of about 3 to 5 m or less is not suitable for large-scale curing methods because the construction range moves in units of tens or hundreds of meters. Therefore, as the curing support unit is assembled with a single pipe and the construction range moves, the units are sequentially moved by a lifting device such as a crane or a backhoe. In addition, the connecting parts of these units are loosened while moving, and curing is carried out while reworking them, which increases labor costs and leads to unexpected construction delays when the unit is damaged or deformed.

      Many curing support structures have been devised, but there are only a few versatile methods, and the most versatile method is a combination of a curing support structure with a single-piece pipe and a synthetic resin curing sheet material (blue sheet, etc.) It can be said. This is a single pipe member and its connection method is widespread and familiar, blue sheet as a curing material is cheap and easy to obtain, and in various field requirements such as tearing to provide an opening It can be said that it is a material that is suitable for responding and can be handled intuitively and empirically by general workers.

JP 2002-70169 JP-A-6-272394 JP 2002-106171 A

      Although the method in the above-mentioned patent document functions as a temporary roof, a frame straddling a rising reinforcing bar or the like often found in construction / civil engineering construction sites is impossible because there is a roof member.

      In addition, no function is considered for work efficiency at the time of loading / unloading to / from the site and movement / storage / storage in the site.

      The structure and the assembly method are complicated, and it is not a method that ordinary workers in the field can understand and construct empirically or intuitively.

In construction and civil engineering work, the support structure can be carried in, assembled, moved, and carried out mainly by crane work so that it does not require much labor and time for the temporary and cured roof assembly. It is a curing support structure with the following characteristics.
(1) A rafter-shaped curing support material and a combination of a short shaft material and a long shaft material for supporting them, or two rectangular curing support material receivers in which they are integrated, It is a curing support structure that can be opened and closed like a folding screen by combining one of the long sides of the integrated member with a hinge.
(2) The short shaft side or the short side of the integrated member (when the support structure is folded, it becomes a gable roof-like form, but the position of the gable at this time) It is a curing support structure with hardware for crane hanging on both sides.
(3) There are four hardware for crane lifting on the side of the wives, and a total of eight on both wives, for four-point suspension when the support structure is closed and for four-point suspension when the support is open. This is a curing support structure with hardware.
(4) The four-point hanging hardware when the support structure is in the closed state is a curing support structure in which the position is near the wife side of the hinged portion at the end of the short shaft member.
(5) When the support structure is in the open state, if the length of the short shaft material is l in the vicinity of the center of the short shaft material, the four-point hanging hardware is 1/3 or more and l / 2 or less from the side end portion that is not the connecting portion It is a support structure for the wife.
(6) Curing support structure in which the length of the short side of the short shaft material or the integral member is in the range of 1200 mm or more and 2400 mm or less not exceeding the width of the carrier bed.

The long shaft material and the short shaft material of the curing support structure characterized as described above and the integrated member can be made of wood, metal, synthetic resin, glass fiber, or the like. The wood is light and has a strong bending strength, so it is economical and can be used in the field. In addition, there is an advantage that even if the structure on site is accidentally contacted, there is little damage that damages the contact object. When a frame is required for a large span, a member composed of metal, synthetic resin, or glass fiber with a high section moment of inertia such as an I-type or rectangular section is a suitable material, and a shaft is combined. Since the shaft assembly can be configured as an integrated member as described in (1) above, the structure can be made stable, but the handling ease and economic efficiency at the site are inferior to wood.

        According to the present invention, a large-scale structural form is not required for the construction of a curing support structure, and a general worker can work empirically and intuitively with crane work during loading, assembly, movement, and disassembly. It is economical because it has high work efficiency and does not require a professional job. In addition, since it is possible to straddle the rising reinforcing bars and protrusions, the structure can be applied to a complex structure in combination with a synthetic resin curing sheet or the like.

Full oblique view of the open state Full oblique view of the closed state Location of hanging hardware Site delivery situation diagram Unloading and loading situation diagram Deployment status diagram Moving situation diagram Implementation diagram

       The invention will now be described in detail in the following examples.

       In order to constitute a curing support structure as shown in FIG. 1, a cedar square material having a cross-sectional dimension of 90 mm × 90 mm is used for the long shaft material (1) having a length of 4 m and the short shaft material (2) having a length of 2 m, and In (3), a material obtained by halving the square member was used. Each joint was fixed with a tenon joint and a part screw. Furthermore, in order to reinforce the joint part, fire metal (4) was provided at the four corners, but the position was set inside the joint part in consideration of contact with the on-site structure. The rafter-shaped curing support material (5) used a larch material cross-sectional dimension of 50 mm × 25 mm with a large amount of oil. Larch wood is a suitable material because it has the property of being easily removed even when the concrete is accidentally adhered and hardened during concrete placement.

      FIG. 2 shows the curing support structure in a folded state. The two rectangular members were connected at four locations (90 locations in FIG. 2) with hinges for welding (6) having a width of 90 mm. Each of the welding hinge flags has a U-shaped section of an iron plate having a length of 240 mm (U-shaped upper side 75 mm + U-shaped vertical side 90 mm + U-shaped bottom side 75 mm), width 154 mm, and thickness 3.2 mm. Then, welding was performed so that the vertical side portion of the member processed so as to sandwich the regular square material faces the U-shaped vertical side portion. This bent iron plate member has a structure in which it can be opened and closed like a folding screen by sandwiching a square member, tightening with two M8 bolts so as to penetrate the upper and bottom sides of the U-shape, and providing four joints.

      In the position shown in FIG. 3, in the short shaft material of 2 m member, the hanging bracket (7) for the open state is attached to the position of the wife side 900 mm from the free end. Since a large pulling shear force is also applied to the suspension fitting, the plate portion of the member in which the half-ring suspension ring is welded to the plate is attached to the U-shaped iron plate used in Example 2 by fillet welding.

      As shown in FIG. 4, the curing support structure of the present invention corresponds to the length of the short shaft member or the short shaft member (2) of the integral member so that it can be loaded in a folded state on the carrier of the transport vehicle (8). It is important that the length of the container does not exceed the width of the loading platform.

      FIG. 5 shows the operation at the time of carrying in and taking out a member from the site. When lifting the curing support structure with a mobile crane or on-site crane, first, the closed state is stabilized by hanging the suspension wire (10) on the hanging bracket (9) for the closed state. Can be done.

      FIG. 6 shows the development work of the curing support structure according to the present invention. Although it can be carried into the site from the transporter by crane work, it needs to be opened for use as a curing support structure. Maintain the state where the suspension wire (10) is attached to the suspension bracket for the closed state, have an ordinary worker slightly open the free end near the ground, lower the crane, and ground the crane. Can be expanded into an open state.

      FIG. 7 shows that after deployment, the suspension wire (10) is changed to the position of the suspension bracket for the open state, and can be lifted by crane work on the support material for the support structure such as pipe support and frame support work. The state where it was lifted in the open state is shown.

      FIG. 8 shows an example in which the pipe support is a curing support structure support (11). The pipe support and the curing support structure can be connected by using a large take-up suitable for a 90 mm × 90 mm square member. The frame support material can be connected in the same manner, and various frames can be formed by combining with general-purpose products that are generally distributed at construction sites.

1 Long shaft material 2 Short shaft material 3 Purlin material (curing support material receiving material)
4 Burning material 5 Curing support material 6 Hinge 7 Hanging bracket for open state 8 Transport vehicle 9 Hanging bracket for closed state 10 Hanging wire 11 Curing support structure support

Claims (6)

        A curing support structure that can be opened and closed by combining a combination of a short shaft material and a long shaft material, or a member in which they are integrated, and two rectangular curing support structures composed of rafter-like members with a hinge.          The curing support structure according to claim 1, wherein a bracket for hanging a crane is attached to the short shaft member or the integral member.         Hardware for crane suspension shall be provided on the outer surface of the short shaft material or on that surface of the integral member, and a total of 8 brackets for 4 point suspension when the support structure is closed and 4 point suspension when the support structure is open. The curing support structure according to claim 2, wherein the curing support structure is provided.         4. The curing support structure according to claim 3, wherein the four-point hanging metal fitting when the support structure is in a closed state is attached to an end portion of the short shaft member that is hinged on the outer surface of the end portion of the short shaft member or its surface. .         When the support structure of claim 3 is in the open state, the four-point hanging bracket is located near the outer central portion of the short shaft material so that a large bending moment does not act on the hinge part when the support structure is lifted in the open state and the open state is stable. If the length of the short shaft material is l, a curing support structure in which the position is more than l / 3 and less than l / 2 from the end that is not on the connecting part side. A curing support structure in which the short side length of the short shaft material or the integral member according to claim 1 is in a range of 1200 mm to 2400 mm.