JP7049961B2 - How to add equipment mount - Google Patents

Description

The present invention relates to a method of adding a facility pedestal in which a support for an equipment pedestal is installed on a slab having a floor structure in which a waterproof layer is laid and a new waterproof layer is provided around the support.

The conventional method of adding a facility pedestal on a slab having a floor structure in which a waterproof layer is laid is generally performed on a slab by installing a support for the equipment pedestal and providing a new waterproof layer around the support. Multiple layers were driven into the slab by removing the waterproof layer at the location where the support was installed, placing the base plate at the lower end of the support on the slab from which the waterproof layer was removed, with an adjustment mortar in between. This is done by fixing the base plate with the anchor of.
However, in such a method of adding an equipment frame, it is necessary to remove the waterproof layer, which causes a problem that the construction period is lengthened and the cost is increased, and that there is a risk of water leakage during the work. Therefore, as a conventional method, a foundation member is installed on the waterproof layer without removing the waterproof layer, a part of the outdoor equipment is placed on the foundation member, and a new waterproof layer is provided around the foundation member. A method for adding a gantry has been proposed (see, for example, Patent Document 1).

Japanese Unexamined Patent Publication No. 2011-231481

However, in the method described in Patent Document 1, since the foundation member is installed on the waterproof layer, the waterproof layer may be damaged, and further, for adjusting the levelness and level of the foundation member. Complicated work is required.

In view of this situation, a main problem of the present invention is to provide a technique capable of adding an equipment stand to a floor structure such as a rooftop with a short construction period and high accuracy while reducing the risk of water leakage during work. be.

The first characteristic configuration of the present invention is to install a support for an equipment pedestal on a slab of a floor structure in which a waterproof layer is laid and presser concrete is laid on the waterproof layer, and a new support is provided around the support. It is a method of adding a facility stand that provides a waterproof layer.
In the presser concrete removing step of removing the place where the support column is installed in the slab and the part of the presser concrete around it with the waterproof layer left.
Anchor driving step of executing the presser concrete removing step to penetrate the waterproof layer and driving a plurality of anchors into the installation location of the support column in the slab from which the presser concrete has been removed without removing the waterproof layer. When,
A support column in which a base plate at the lower end of the support column is fixed only to a plurality of anchors driven in the anchor driving step so that the base plate is floated from the waterproof layer in all parts other than the plurality of anchors. Fixing process and
A new waterproof layer laying step of laying the new waterproof layer around the support fixed in the support fixing step, and a new waterproof layer laying step.
The point is to perform a presser concrete restoration step of restoring a portion of the presser concrete around the installation location of the support column removed in the presser concrete removal step .

According to this configuration, the columns are fixed to multiple anchors driven into the slab without removing the existing waterproof layer, so the work of removing the waterproof layer is omitted and the construction period is shortened and the cost is reduced. In addition to being able to reduce the risk of water leakage during work.
Furthermore, since the support is fixed to the multiple anchors driven into the slab with the base plate at the lower end of the support floating, the slab and the slab are laid while preventing damage to the waterproof layer laid on the slab. The levelness and level of the base plate of the column can be easily adjusted without being affected by the waterproof layer.
Therefore, according to the present invention, it is possible to provide a method for adding an equipment pedestal that can add an equipment pedestal to a floor structure such as a rooftop in a short construction period and with high accuracy while reducing the risk of water leakage during work.
Further, according to this configuration, the support is fixed to the anchor driven into the slab without removing the existing waterproof layer in a state where the installation location of the support and the part of the presser concrete around the support are removed. A new waterproof layer will be laid around it, after which the part of the presser concrete around the location of the removed columns will be restored. Then, around the pillars, a new waterproof layer is layered on top of the existing waterproof layer while being protected by the restored presser concrete, so that water leakage at the boundary between them is surely prevented. be able to.

The second characteristic configuration of the present invention is that in the support column fixing step, the lower nut is screwed into the plurality of anchors while floating from the waterproof layer, and the base plate is installed on the lower nut.

According to this configuration, in the strut fixing process, the lower nut is screwed into a plurality of anchors driven into the slab while floating from the waterproof layer on the slab, and the base plate of the strut is installed on the lower nut. By adopting the configuration, it is possible to fix the base plate of the column to a plurality of anchors driven into the slab while floating from the waterproof layer on the slab. In this case, the levelness and level of the base plate of the support column installed on the lower nuts can be easily adjusted by simply adjusting the level of each lower nut screwed into the plurality of anchors.

The third characteristic configuration of the present invention is that in the anchor driving step, a waterproof treatment is applied to the periphery of the penetration portion of the anchor with respect to the waterproof layer .

Flow diagram showing the flow of how to add equipment mounts The figure which shows the state of the support post installation place after the presser concrete removal process Diagram showing the state of the support column installation location after the anchor driving process The figure which shows the state of the support post installation place after the support support fixing process The figure which shows the state of the support post installation place after the mortar filling process Diagram showing the state of the column installation location after the new waterproof layer laying process Diagram showing the state of the column installation location after the presser concrete restoration process The figure which shows the installation state of the equipment pedestal Top view of the base plate of the column

An embodiment of the present invention will be described with reference to the drawings.
As shown in FIG. 8, the method of adding the equipment pedestal of the present embodiment (hereinafter referred to as “the method of adding the main pedestal”) is to add the equipment pedestal 20 for installing a heavy machine or the like on the floor structure 1 of the rooftop or the like. It is configured as a way to do it.
Here, the equipment pedestal 20 is configured to have a frame body 20B on which a heavy machine or the like is placed, and columns 20A extending downward from at least four corners of the frame body. As shown in FIGS. 7 and 9, the pillar 20A includes a pillar portion 22 made of H-shaped steel extending in the vertical direction and a flat plate-shaped base plate 21 joined to the lower end portion thereof. Has been done. In this embodiment, the base plate 21 is joined to the lower end of the pillar 22 in a state where the upper surface of the base plate 21 on the lower end of the pillar 22 is in contact with the lower end of the pillar 22. However, the form of the base plate 21 and the connection state to the lower end of the column 20A can be appropriately changed. For example, the base plate 21 is joined to the side surface of the lower end of the column 22 so as to extend outward. It doesn't matter.

The method for adding the main gantry will be described in detail later, but as shown in FIGS. 7 and 8, the stanchion 20A of the equipment gantry 20 is installed on the slab 2 of the floor structure 1 in which the waterproof layer 3 is laid, and the stanchion is concerned. It is configured as a method of providing a new waterproof layer 33 around the 20A, and in the method of adding the gantry, as shown in FIG. 1, a presser concrete removing step (step # 1) and an anchor driving step (step # 2). , The column fixing step (step # 3), the mortar filling step (step # 4), the new waterproof layer laying step (step # 5), and the presser concrete restoration step (step # 6) are executed in the order described. Will be done.
Hereinafter, the details of each step will be described in order.

(Presser concrete removal process)
As shown in FIG. 2, in the floor structure 1 before the execution of the method for adding the main frame, the waterproof layer 3 is laid on the surface of the concrete slab 2. Further, a presser concrete 4 is laid on the surface of the waterproof layer 3, and a finishing material 5 is appropriately laid on the surface of the presser concrete 4.
Then, in the method of adding the main stand, first, the presser concrete removing step (step # 1 in FIG. 1) is executed. In this presser concrete removing step, the part 4a of the presser concrete 4 and the part 5a of the finishing material 5 around the installation location X of the support column 20A (see FIG. 8 and the like) are removed with the waterproof layer 3 left. .. At this time, the area of the parts 4a and 5a to be removed in the presser concrete 4 and the finishing material 5 is slightly larger than that of the support column 20A.

(Anchor driving process)
After the pressing concrete removing step (step # 1 in FIG. 1) is executed, the anchor driving step (step # 2 in FIG. 1) is executed. In this anchor driving step, as shown in FIG. 3, a plurality of anchors 25 are driven into the installation location X of the support column 20A in the slab 2 by penetrating the waterproof layer 3 without removing the waterproof layer 3. In this embodiment, four anchors 25 for fixing one support column 20A (see FIG. 8 and the like) are driven into each installation location X. Further, the area around the penetrating portion of the anchor 25 in the waterproof layer 3 is temporarily waterproofed during the anchor driving operation by a simple method such as a sealing agent.

(Strut fixing process)
After the anchor driving step (step # 2 in FIG. 1) is executed, the support column fixing step (step # 3 in FIG. 1) is executed. In this support column fixing step, as shown in FIG. 4, the support column 20A is fixed to the plurality of anchors 25 driven in the anchor driving step in a state where the base plate 21 at the lower end of the support column 20A is floated from the waterproof layer 3. To.
Specifically, in this support column fixing step, the lower nut 26 is screwed onto the plurality of anchors 25 in a state of being floated from the waterproof layer 3, and the base plate 21 is installed on the lower nut 26. In that state, the levelness and level of the base plate 21 are adjusted by adjusting the height position of the lower nut 26 screwed into each of the plurality of anchors 25. Then, when the adjustment is completed, the washer 28 and the upper nut 27 are screwed into each of the plurality of anchors 25, and the upper nut 27 is tightened. Then, the base plate 21 is fixed to the anchor 25 by sandwiching the base plate 21 between the lower nut 26 and the upper nut 27.

That is, in the main pedestal expansion step, a plurality of anchors 25 are driven into the slab 2 without removing the existing waterproof layer 3 as shown in FIG. 3 in the anchor driving step, and in the next column fixing step, FIG. 4 As shown in the above, the support column 20A is fixed to the plurality of anchors 25. That is, since the work of removing the existing waterproof layer 3 is omitted, the construction period can be shortened and the cost can be reduced. Further, the existing waterproof layer 3 remains, so that the risk of water leakage during work is reduced.

(Mortar filling process)
After the execution of the support column fixing step (step # 3 in FIG. 1), the mortar filling step (step # 4 in FIG. 1) is executed. In this mortar filling step, as shown in FIG. 5, between the existing waterproof layer 3 laid on the slab 2 and the base plate 21 fixed to the anchor 25 while floating upward from the waterproof layer 3. The gap is filled with the non-shrink mortar 30. Here, the periphery of the gap filled with the non-shrink mortar 30 is closed by a temporary mold 35, and the mold 35 is removed after the non-shrink mortar 30 is solidified. In the method of adding the gantry, the load transmitted from the base plate 21 of the support column 20A is supported by the anchor 25 through the lower nut 26. Therefore, this mortar filling step is omitted and the gap between the waterproof layer 3 and the base plate 21 is omitted. May be left as it is as a space. In this case, since the anchor 25 has a structure protruding from the slab 2, the anchor 25 and the like can be designed so as to have a necessary yield strength against the bending moment generated by the shearing force transmitted from the equipment frame 20 at the time of an earthquake. desirable.

(New waterproof layer laying process)
After the execution of the mortar filling step (step # 4 in FIG. 1), a new waterproof layer laying step (step # 5 in FIG. 1) is executed. In this new waterproof layer laying step, as shown in FIG. 6, a new waterproof layer 33 is laid around the support column 20A fixed in the above-mentioned column fixing step.
The new waterproof layer 33 is erected from an annular flat surface portion 33b laid on the upper surface of the existing waterproof layer 3 around the support column 20A and from the central portion of the flat surface portion 33b along the outer peripheral portion of the support column 20A. It is composed of a rising portion 33a.

(Presser concrete restoration process)
After the execution of the new waterproof layer laying step (step # 5 in FIG. 1), the presser concrete restoration step (step # 6 in FIG. 1) is executed. In this presser concrete restoration step, as shown in FIG. 7, for example, a portion 4b of the presser concrete 4 is placed on the flat surface portion 33b of the new waterproof layer 33 around the installation location X of the support column 20A, and the portion 4b of the presser concrete 4 is placed on the flat portion 33b. In the form of laying the part 5b of the finishing material 5, the part 4b of the presser concrete 4 removed in the above-mentioned step of removing the presser concrete (step # 1 in FIG. 1) and further the part 5b of the finishing material 5 are restored.

Then, around the installation location X of the support column 20A, the flat surface portion of the new waterproof layer 33 is placed on the existing waterproof layer 3 in a state of being protected by the portion 4b of the presser concrete 4 restored in the presser concrete restoration step. 33b will exist in an overlapping state. Therefore, water leakage at the boundary between the existing waterproof layer 3 and the new waterproof layer 33 is surely prevented.

[Another Embodiment]
Other embodiments of the present invention will be described. It should be noted that the configurations of the respective embodiments described below are not limited to being applied independently, but can also be applied in combination with the configurations of other embodiments.

(1) In the above embodiment, in the support column fixing step (see FIG. 4), by installing the base plate 21 of the support column 20A on the lower nuts 26 screwed into the plurality of anchors 25, the base plate 21 of the support column 20A is attached to the plurality of anchors 25. The base plate 21 of the support column 20A is fixed in a state of being floated from the waterproof layer 3 on the slab 2, but the method of fixing the base plate 21 to the plurality of anchors 25 may be appropriately modified.

(2) In the above embodiment, the presser concrete removing step (see FIG. 2) is performed before the anchor driving step (see FIG. 3) is executed, and the presser concrete restoration step (see FIG. 6) is performed after the execution of the new waterproof layer laying step (see FIG. 6). Although it is configured to perform (see FIG. 7), if the presser concrete does not exist on the existing waterproof layer 3, the presser concrete removal step and the presser concrete restoration step may be omitted as appropriate.

1 Floor structure 2 Slab 3 Waterproof layer 4 Presser concrete 4a, 4b Presser concrete part 20 Equipment stand 20A Support 21 Base plate 25 Anchor 26 Lower nut 33 Waterproof layer X Installation location

Claims (3)

A method of adding a facility pedestal in which a support for an equipment pedestal is installed on a slab having a floor structure in which a waterproof layer is laid and presser concrete is laid on the waterproof layer, and a new waterproof layer is provided around the support. And
In the presser concrete removing step of removing the place where the support column is installed in the slab and the part of the presser concrete around it with the waterproof layer left.
Anchor driving step of executing the presser concrete removing step to penetrate the waterproof layer and driving a plurality of anchors into the installation location of the support column in the slab from which the presser concrete has been removed without removing the waterproof layer. When,
A support column in which a base plate at the lower end of the support column is fixed only to a plurality of anchors driven in the anchor driving step so that the base plate is floated from the waterproof layer in all parts other than the plurality of anchors. Fixing process and
A new waterproof layer laying step of laying the new waterproof layer around the support fixed in the support fixing step, and a new waterproof layer laying step.
A method for adding a facility pedestal to perform a presser concrete restoration step of restoring a part of the presser concrete around the installation location of the support column removed in the presser concrete removal step . The method for adding an equipment stand according to claim 1, wherein in the support column fixing step, a lower nut is screwed onto the plurality of anchors while floating from the waterproof layer, and the base plate is installed on the lower nut. The method for adding an equipment frame according to claim 1 or 2 , wherein in the anchor driving step, waterproofing treatment is performed on the periphery of the penetration portion of the anchor with respect to the waterproof layer .

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