JPH0932288A - Support method and tool for gap filling filler for pipe insertion hole - Google Patents

Abstract

PROBLEM TO BE SOLVED: To flexibly cope with the case where a pipe passing through an insertion hole is dislocated from the center of the insertion hole by burying multiple support tools each having a filled section and a support pawl section in concrete structure element, and radially protruding the support pawl sections toward the center of the insertion hole. SOLUTION: The vertical extension section 5 of a support tool 1 is arranged along the outer peripheral face of a tube body B, and the edge of the tube body B is pinched by it and a pinch pawl 8. A support pawl section 3 is automatically protruded radially toward the center of the tube body B. The tube body B fitted with the support tools 1 at uniform intervals is combined with another formwork, concrete is placed, the tube body B is removed after concrete is hardened, and the operability is good. A plate material having strength, workability, and fire resistance is inserted into one end section of the insertion hole to block it for supporting the unhardened filler, and it is supported by the support pawl sections 3. The utilization range of the system of burying the support tool 1 into a concrete structure element in advance can be expanded.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a technique for filling a gap between pipes such as slabs and the like in insertion holes formed for passing pipes such as wiring pipes and water pipes in concrete structural elements.

[0002]

2. Description of the Related Art In order to fill gaps between insertion holes and pipes, a hardening filler such as mortar is generally used. Therefore, it is necessary to support the filler from one end side of the insertion hole until the filler filled in the gap is cured. As such a supporting technique, for example, Japanese Patent Publication No. 4-3
Techniques such as those found in JP-A-8862 and JP-A-61-130687 are known.

These techniques are disclosed in Japanese Laid-Open Patent Publication No. 4-38862, which is a sheet-like support tool.
In No. 1-130687, a sealant holding sheet is used to close the gap at one end of the insertion hole. In the case of the insertion hole in the concrete slab, which is the most common case, the installation of the supporting tool for that purpose is performed from the lower surface of the slab. Such installation work cannot proceed without some scaffolding because the lower surface of the slab is at a high position. However, due to legal restrictions on working conditions, a simple scaffolding such as a stepladder cannot be used.
For this reason, it often happens that a large amount of work is required to install the scaffold. Further, when the position of the insertion hole is close to the corner, it is often difficult to install the scaffold. In other words, the method of using a sheet-shaped support tool requires that the support tool be installed on the lower side of the slab that is in a high position and in poor working conditions, so it is easy to use a scaffold for other work. It has the disadvantage that work efficiency is poor and labor costs are high if a foothold cannot be secured.

For such a technique, for example, the actual exploitation Sho 63
Like the technique disclosed in JP-A-41146, a support tool (hole filling frame) when forming a concrete structural element.
In the case of the technique in which the above is embedded in the concrete structural element in advance, there is no problem in the work of installing the support. However, when a hole-filling frame as in Japanese Utility Model Laid-Open No. 63-41146 is used as a support, the position of the pipes passing through the hole is always located at the center of the hole because of the structure of the hole-filling frame. There is a constraint that it must be. In other words, since the hole-filling frame is formed of a single plate-like member and completely covers one end of the insertion hole, it is possible to remove pipes greatly from the small hole provided in the center of the insertion hole. Is a problem that pipes and hole filling frames interfere with each other and cannot be applied.

[0005]

The present invention has been made in view of such circumstances, and is a system in which a support tool is embedded in the concrete structural element in advance when the concrete structural element is formed. In order to make more effective use of the advantage that the installation work of the support is easy, it is possible to flexibly deal with the case where the position of the pipes passing through the insertion hole deviates from the center of the insertion hole. It is an object.

[0006]

For this purpose, in the present invention, after the pipes are inserted through the through holes formed in the concrete structural element, the space between the pipes and the through holes is filled with a filling material such as mortar. As a supporting method for supporting the uncured filler when filling and hardening by filling, multiple supports equipped with embedded parts and supporting claws are used to form the concrete structural elements. The parts are embedded in the concrete structural element around the insertion hole, and the supporting claws are provided so as to radially project toward the center of the insertion hole at one end of the insertion hole, and pipes are provided in the insertion hole. After the insertion, the cut plate material for passing the pipes is dropped into the insertion hole so as to be supported by the support claw portions of the plurality of support tools, and is positioned at one end of the insertion hole. Provide support method so as to close to the end portion of the support of the uncured filler.

According to this supporting method, if the number of supporting tools is set to, for example, 3 to 4, even if the pipes passing through the insertion holes come off the center of the insertion holes, the supporting tools are attached to the pipes. Interference of the support claws can be substantially avoided, and the plate material that will eventually close one end of the insertion hole for supporting the uncured filler is also cut according to the insertion position of the pipes. Since it can be applied, it is possible to avoid interfering with pipes. That is, even if the position of the pipes passing through the insertion hole is deviated from the center of the insertion hole, it is possible to flexibly deal with it.

With respect to such a supporting method, a locking means is provided in the embedded portion of the supporting tool, and the supporting tool is fitted to the tubular body used as a frame for the insertion hole when the concrete structural element is formed. It is possible to make the concrete structural element formed in the state of being locked, that is, by driving the concrete into the formwork and hardening it, so that the embedded portion of the support is embedded in the concrete structural element.

[0009] With this configuration, the support hole is in a form in which the respective support members surround the periphery of the insertion hole at one end and the supporting claws thereof project radially toward the center of the insertion hole. It can be fixedly provided by the cylindrical body, and the installation work of each support tool can be simplified. In addition, each support can also function as a support for the tubular body, which can be useful for labor saving in the work of assembling the tubular body with another formwork for forming a concrete structural element.

The support used in the above supporting method is
Equipped with an embedded part that is embedded in the concrete structural element around the insertion hole, and a support claw part that is in a state of protruding toward the center of the insertion hole at one end of the insertion hole depending on the embedded state of the embedded part in the concrete structural element. It has a different structure.

Further, when the locking means is provided in the embedded portion as described above, the locking means is provided in a vertically extending portion formed in a flat plate shape, and is arranged in a state of being opposed to the vertically extending portion. And a clamping claw provided with an appropriate spring property, a structure in which the edge of the cylinder is clamped by arranging the longitudinally extending portion along the outer peripheral surface and the clamping claw along the inner peripheral surface. Is preferred.

With this configuration, the support tool can be locked to the tubular body by a simple operation in which the edge of the tubular body is sandwiched between the vertically extending portion and the holding claw.

[0013]

BEST MODE FOR CARRYING OUT THE INVENTION An embodiment of the present invention will be described below. First, an embodiment of the support tool will be described. As shown in FIG. 1, the support 1 has a structure including an embedded portion 2 and a support claw portion 3.

The embedded portion 2 extends vertically in the form of a flat plate, and a vertically extending portion 5 extending from the lower end of the vertical extension portion 5 in the state of being orthogonal to the flat portion and extending in the horizontal direction. A laterally extending portion 6 and a vertically extending portion 5 and a holding claw 8 which forms a locking means in pairs with the vertically extending portion 5. Further, the laterally extending portion 6 and the vertically extending portion 5 have a concrete structure. An anchor claw 9 and an anchor claw 10 are provided as an anchor for concrete when embedded in the element.

The longitudinally extending portion 5 and the laterally extending portion 6 are formed by pressing one steel plate. Further, the sandwiching claw 8 is formed by giving a spring property by partially cutting and raising the central portion of the vertically extending portion 5 and bending it in a protruding shape. This facilitates processing and saves material. For the same reason, the anchor claw 9,
10 is also formed by partially cutting and raising the laterally extending portion 6 and the longitudinally extending portion 5.

The supporting claw portion 3 is provided at the same level as the longitudinally extending portion 5 and extends from the lower end of the longitudinally extending portion 5 in the direction opposite to the laterally extending portion 6. Further, two supporting claws 3 are provided as a pair of right and left so as to sandwich the sandwiching claw 8 from the relationship of forming the sandwiching claw 8 as described above. If both supporting claws 3 and 3 are formed from a single steel plate together with the longitudinally extending portion 5 and the laterally extending portion 6, the workability can be improved, but from the viewpoint of efficient use of the material. It is preferable that they are separately formed and connected by welding or the like.

As shown in FIG. 1, such a supporting tool 1 is used by being locked to a cylindrical body B generally called a void which is used as a mold for forming an insertion hole. The preferable number of one cylindrical body B, that is, one insertion hole is about 3 or 4 as shown in FIG. 1, and each of them is arranged at equal intervals. Each support 1 is locked to the tubular body B by holding the vertically extending portion 5 along the outer peripheral surface and holding the edge between the vertically extending portion 5 and the holding claw 8. Then, the support claws 3 are naturally in a state of radially projecting toward the center of the cylindrical body B. At the same time, the laterally extending portions 6 are radially projected toward the outside of the cylindrical body B. As can be seen from this, the three support tools 1 are not only supported by the tubular body B, but also function as a support when the tubular body B is conversely combined with another formwork for forming a concrete structural element. To do.

In this way, the cylinder B, to which the support 1 which also functions to support it is attached, is combined with another formwork for forming a concrete structural element, concrete is driven, and the cylinder is cured after the concrete is hardened. If B is removed, the concrete structural element C as shown in FIG.
The support 1 is inserted into the insertion hole H with the embedding part 2 embedded therein.
It is possible to obtain a state in which the support claws 3 are arranged around the circumference of the insertion hole H and radially project toward the center of the insertion hole H at one end of the insertion hole.

In order to support one end of the insertion hole H for supporting the uncured filling material by using each support 1 provided along the insertion hole H in this manner, for example, a rock wool plate is used. A plate material 11 having appropriate strength necessary for supporting the uncured filler, easy to process, and fire resistant is dropped into the insertion hole H, and is supported by the support claw portion 3. Plate material 11
Is, as shown in FIG. 3, two halves 11p and 11p.
Used in combination, and the support 1
A notch 12 is made in the portion corresponding to, and a notch 13 for avoiding the pipe P passing through the insertion hole H is made.

[0020]

As described above, according to the present invention,
Even if the position of the pipes passing through the insertion hole is deviated from the center of the insertion hole, it is possible to flexibly cope with it, and when forming the concrete structural element, the support tool should be embedded in the concrete structural element in advance. The range of use of the method can be expanded.

[Brief description of drawings]

FIG. 1 is a perspective view showing a state in which a support according to an embodiment of the present invention is locked to a cylinder.

FIG. 2 is a cross-sectional view of an arrangement state around the insertion hole of the support tool of FIG.

FIG. 3 is a plan view of a plate member that is supported by the support tool of FIG. 1 and is used to close one end of the insertion hole.

[Explanation of symbols]

 1 Support Tool 2 Embedded Section 3 Support Claw Section 5 Longitudinal Extension Section 8 Clamping Claw 11 Plate Material 13 Notch B Cylinder C Concrete Structural Element H Insertion Hole P Pipe

Claims (4)

[Claims] 1. When a pipe is inserted through an insertion hole formed in a concrete structural element, and then a gap between the pipe and the insertion hole is filled and hardened with a filling material such as mortar,
In a supporting method for supporting an uncured filler, a plurality of supporting members each having an embedded portion and a supporting claw portion are provided, and when the concrete structural element is formed, each embedded portion is covered with concrete around the through hole. While embedding in the structural element
The supporting claws are provided at one end of the insertion hole in a state of radially projecting toward the center of the insertion hole, and after inserting the pipes into the insertion hole, make a cut for inserting the pipes. The applied plate material is dropped into the insertion hole so as to be supported by the support claw portions of the plurality of support tools and positioned at one end portion of the insertion hole, so that the one end portion is closed for supporting the uncured filler. A supporting method characterized by having done. 2. A locking means is provided in an embedded portion of the support tool, and the support tool is locked by the locking means to a tubular body used as a mold for an insertion hole when forming a concrete structural element, and in this state. The supporting method according to claim 1, wherein the embedded portion of the support is embedded in the concrete structural element by forming the concrete structural element with. 3. A support tool used in the supporting method according to claim 1, wherein an embedding portion embedded in the concrete structural element around the insertion hole and an insertion hole depending on an embedding state of the embedding portion in the concrete structural element. A support tool provided with a support claw portion that projects toward the center of the insertion hole at one end of the support. 4. The support tool used in the supporting method according to claim 2, wherein the locking means of the embedded portion is a longitudinally extending portion that extends in the longitudinal direction and opposes the longitudinally extending portion. A support tool which is arranged in a state and is configured to hold a rim of a tubular body by arranging a vertically extending portion along an outer peripheral surface and a holding claw along an inner peripheral surface.