Bed structure and construction method of the bed structure

Abstract

To provide a floor structure and its construction method that can more reliably prevent the occurrence of various defects related to covering materials.SOLUTION: A floor structure 11 comprises a floor base 12 having a cylindrical member 123 installed corresponding to a frame hole 121b formed in a predetermined floor formwork 121, and in which a predetermined flooring material 122 is cast outside the cylindrical member 123 on the floor formwork 121, and a covering material 13 sprayed on a lower surface of floor formwork 121. In such the floor structure 11, a locking portion 15a having a cylindrical shape and protruding outward is formed in an upper portion. The locking portion 15a is installed in series with the cylindrical member 123 by being locked to the floor formwork 121. A supplementary sleeve 15 is provided which has a length such that at least its lower portion can protrude below the covering material 13. The covering material 13 is then sprayed onto an outside of the supplementary sleeve 15 on the lower surface of the floor formwork 121.SELECTED DRAWING: Figure 1

Description

Technical Field

[0001] The present invention relates to a floor structure in which concrete or the like is placed on a floor formwork and pipes or the like are provided in a state of penetrating vertically, and a construction method of the floor structure.

Background Art

[0002] Conventionally, as a floor structure, on a predetermined floor formwork (for example, a deck plate mainly made of a relatively thin iron plate such as a flat deck or a ferro deck (registered trademark)), after arranging steel bars, a floor material such as concrete or mortar is placed, and pipes or the like are provided in a state of penetrating vertically. Also, in the case of a floor where steel bars are arranged on a predetermined floor formwork and concrete is placed, if it meets the certification conditions, it receives a fire resistance designation, but if it does not meet the certification conditions, it receives a fire resistance structure certification with a sprayed fireproof material. Thus, a covering material such as a fireproof covering material may be provided on the surface of the structure such as the lower surface of the floor formwork. Also, not limited to the case of imparting fire resistance performance, a covering material such as a urethane material as a heat insulating material may be provided on the surface of the structure such as the lower surface of the floor formwork in order to improve the heat insulating performance of either the upper or lower room of the floor (see, for example, Patent Document 1, etc.).

[0003] Conventionally, a floor structure having the above-described covering material and pipes is constructed, for example, as follows. First, as shown in FIG. 20, (1) after installing a cylindrical member 101 (generally called a "sleeve") on a floor formwork 100, steel bars (not shown) are arranged outside the cylindrical member 101 on the floor formwork 100, and then a floor material 102 is placed. Next, as shown in FIG. 21, (2) the floor formwork 100 inside the cylindrical member 101 is cut and removed to form a through-hole 100a for inserting a pipe through the floor formwork 100.

[0004] Next, as shown in FIG. 22, (3) a covering material 103 such as a heat insulating material or a fireproof covering material is provided on the lower surface of the floor formwork 100 by spraying. Then, as shown in FIG. 23, (4) an extra covering material 103 that is located near the through-hole 100a or the like and becomes an obstacle when arranging pipes is removed.

[0005] Next, as shown in FIG. 24, the pipe 104 is inserted through the cylindrical member 101 and the frame hole 100a so as to pass through the covering material 103. Then, as shown in FIG. 25, a sheet-like sealing member 105 is attached from the outer peripheral surface of the pipe 104 to the surface of the covering material 103 to close the gap between the pipe 104 and the covering material 103. And finally, a predetermined filling material 106 (for example, mortar or the like) is filled between the cylindrical member 101 and the pipe 104 to complete the construction of the floor structure.

[0006] In addition, when the floor formwork is a Ferrodeck (registered trademark) which is a deck plate with reinforcement provided in advance, instead of using the cylindrical member, in place of the above steps (1) and (2), after placing the floor material on the floor formwork, core removal of these floor materials and the like may be performed to form a through hole penetrating the floor formwork and the floor material. Even in this case, after the formation of the through hole, the same steps as the above (3) to (7) are performed to complete the construction of the floor structure.

Prior Art Documents

Patent Documents

[0007]

Patent Document 1

Summary of the Invention

Problems to be Solved by the Invention

[0008] By the way, the construction of the floor structure is shared between the construction work side and the facility work side. After the through hole in the frame is formed on the facility work side, the spraying of the covering material is performed on the construction work side, and the removal of the excess portion at the frame hole location in the covering material is performed on the facility work side, which is generally the case. Here, when removing the excess portion at the frame hole location in the covering material on the facility work side, if the covering material is excessively peeled or chipped, as a result, there may be a need for repair work on the covering material on the construction work side. Therefore, the separation of work between the construction work side and the facility work side is not good, and there is a risk of causing a delay in the construction period.

[0009] In addition, by performing construction for removing or repairing the covering material, there is a risk that the appearance may deteriorate due to the presence of the removed part or the repaired part. Further, along with the removal or repair of the covering material, for example, a shortage of the covering material thickness due to the generation of a gap may occur, so that the intended functions (such as fire resistance performance and heat insulation performance) achieved by providing the covering material may not be sufficiently exhibited, and the quality of the floor structure may deteriorate.

[0010] The present invention has been made in view of the above circumstances, and an object thereof is to provide a floor structure and a construction method thereof that can more reliably prevent the occurrence of the above problems related to the covering material.

Means for Solving the Problems

[0011] Hereinafter, each means suitable for solving the above object will be described separately. In addition, the effects specific to the corresponding means will be added as necessary.

[0012] Means 1. A floor base portion having a cylindrical member installed on the floor form corresponding to a frame hole formed in a predetermined floor form, and a predetermined floor material being placed outside the cylindrical member on the floor form, A floor structure including a covering material sprayed on the lower surface of the floor form, The frame hole is formed by cutting the floor form with the cylindrical member installed therein in an endless shape inside the cylindrical member, and has a smaller diameter than the inner diameter of the cylindrical member. A splicing sleeve having a cylindrical shape and having a locking portion protruding outward formed at the upper portion, and the locking portion being locked to the portion of the floor form forming the frame hole, so that the splicing sleeve is provided in series with the cylindrical member and has a length such that at least the lower portion can protrude below the covering material. The floor structure is characterized in that the covering material is sprayed outside the splicing sleeve on the lower surface of the floor form.

[0013] According to the above-mentioned means 1, in a floor structure in which a cylindrical member is provided on a floor base, a splicing sleeve having a length such that at least the lower part can protrude below the covering material is provided in series with the cylindrical member. By providing such a splicing sleeve, when spraying the covering material, it is possible to more reliably prevent the adhesion of excess covering material that becomes an obstacle when inserting the pipe, and as a result, the operation of cutting and removing the excess covering material becomes unnecessary. Thereby, when removing the covering material, the covering material will not be excessively peeled or chipped, so that the repair work of the covering material on the construction side becomes unnecessary. As a result, the separation of the construction work between the construction side and the equipment installation side is improved, and the construction period can be compressed.

[0014] In addition, it is possible to more reliably prevent the deterioration of the appearance due to the presence of the removed portion and the repaired portion in the covering material, and good appearance quality can be obtained. Furthermore, since the removal and repair of the covering material are unnecessary, it is possible to more reliably exert the intended function by providing the covering material, and the quality of the floor structure can be improved.

[0015] Means 2. After forming a vertical formwork with a combustible cylindrical member temporarily installed on the floor formwork corresponding to the formwork holes formed in a predetermined floor formwork, a floor base formed by placing a predetermined floor material outside the cylindrical member on the floor formwork, A floor structure comprising a covering material sprayed on the lower surface of the floor formwork, The cylindrical member is to be removed after the floor material is placed, The formwork holes are formed by cutting the floor formwork in an endless shape inside the part corresponding to the removal location of the cylindrical member in the floor base, and are made smaller in diameter than the inner diameter of the cylindrical member. A splicing sleeve having a cylindrical shape and having a locking portion protruding outward is formed at the upper part, and the locking portion is locked to the part forming the formwork hole in the floor formwork, so that it is provided in series with the part corresponding to the removal location of the cylindrical member in the floor base, and has a length such that at least the lower part can protrude below the covering material. The floor structure is characterized in that the covering material is sprayed outside the splicing sleeve on the lower surface of the floor formwork.

[0016] In addition, the phrase "the part corresponding to the removal location of the cylindrical member in the floor base" can be paraphrased as the part of the floor base that forms (faces) the space remaining after the removal of the cylindrical member.

[0017] According to the above means 2, in a floor structure having a frame hole formed inside the space remaining after removing a cylindrical member, after the floor material is placed after the cylindrical member is temporarily provided on the floor base, a splicing sleeve having a length such that at least the lower part can protrude below the covering material is provided in series with the part of the floor base corresponding to the removal location of the cylindrical member. In this floor structure, the cylindrical member serving as the vertical formwork is made of a paper void or a combustible void board box, etc., and it is assumed that the cylindrical member is removed after the floor material is placed. By providing such a splicing sleeve, the same operational effects as those of means 1 are achieved.

[0018] Means 3. A pipe provided in a state of passing through the frame hole and penetrating the floor base and the covering material vertically, A filling material filled at least between the part of the floor base corresponding to the cylindrical member and the pipe, And a sealing member attached to at least the outer peripheral surface of the pipe to prevent the filling material from leaking downward, The floor structure according to means 1 or 2, characterized in that the sealing member is attached from the outer peripheral surface of the part of the pipe that passes through the inside of the splicing sleeve and protrudes below the splicing sleeve to the outer peripheral surface of the part of the splicing sleeve that protrudes below the covering material.

[0019] In addition, "the part of the floor base corresponding to the cylindrical member" refers to the "cylindrical member" in the above means 1 (when subordinate to the above means 1), and refers to "the part of the floor base corresponding to the removal location of the cylindrical member" in the above means 2 (when subordinate to the above means 2).

[0020] Conventionally, a sealing member for preventing leakage of the filling material downward is attached from the outer peripheral surface of the pipe to the surface of the covering material. However, there are many fine irregularities on the surface of the covering material. Therefore, the sealing member is likely to peel off, and the appearance related to the attachment state of the sealing member is likely to deteriorate.

[0021] On the other hand, for example, it is conceivable to adopt a configuration in which the sealing member is attached to the lower surface of the floor formwork. In this case, however, the portion of the floor formwork that becomes the surface to which the sealing member is attached must not be covered with the covering material. However, if configured in this way, there is a risk that the intended functions (such as fire resistance performance) by providing the covering material will not be sufficiently exhibited.

[0022] In this regard, according to the above means 3, the sealing member is attached not to the surface of the covering material but to the outer peripheral surface of the portion of the added sleeve that protrudes below the covering material. Therefore, compared with the case where the surface of the covering material is the attachment target, the sealing member can be made more difficult to peel off, and the appearance related to the attachment state of the sealing member can be improved.

[0023] Furthermore, there is no need to adopt a configuration in which a part of the floor formwork is not covered with the covering material in order to attach the sealing member (to secure the surface to which the sealing member is attached). As a result, the intended functions by providing the covering material can be more reliably exhibited.

[0024] Means 4. A floor structure comprising a floor base on which a predetermined floor material is placed on a predetermined floor formwork, and a through hole penetrating the floor formwork and the floor material, and a covering material sprayed on the lower surface of the floor formwork. It is cylindrical, and a plurality of slits extending in the axial direction or obliquely to the axis are formed at the upper part, and a plurality of support portions are formed at the upper part by bending the portion located between the slits outward. While the plurality of support portions are in pressure contact with the through-hole forming portion which is the portion forming the through-hole in the floor base portion, it is fixed to the through-hole forming portion by a predetermined caulking material, thereby being provided in series with the through-hole forming portion, and further comprising a patch sleeve having a length such that at least the lower part can project below the covering material. The floor structure is characterized in that the covering material is sprayed outside the patch sleeve on the lower surface of the floor formwork.

[0025] According to the above means 4, in a floor structure in which a through-hole is formed in the floor base by core pulling or the like, the same operational effects as those of the above means 1 are achieved.

[0026] Further, according to the above means 4, the patch sleeve has a plurality of support portions formed by a relatively simple method such as slit formation and bending outward, and using these plurality of support portions, it is provided in series with the through-hole forming portion of the floor base. Therefore, it is possible to effectively suppress an increase in labor and cost related to the production of the patch sleeve.

[0027] Means 5. A pipe provided in a state of passing through the through-hole and vertically penetrating the floor base and the covering material, A filler filled at least between the through-hole forming portion and the pipe, And a sealing member attached to at least the outer peripheral surface of the pipe to prevent the filler from leaking downward. The floor structure according to means 4, wherein the sealing member is attached from the outer peripheral surface of the portion of the pipe that passes through the patch sleeve and projects below the patch sleeve to the outer peripheral surface of the portion of the patch sleeve that projects below the covering material.

[0028] According to the above means 5, the same operational effects as those of the above means 3 are achieved.

[0029] A floor base having a cylindrical member installed on the floor form corresponding to a frame hole formed in a predetermined floor form, and a predetermined floor material being placed outside the cylindrical member on the floor form, A covering material sprayed on the lower surface of the floor form, A pipe provided in a state of passing through the inside of the cylindrical member and the frame hole and vertically penetrating the floor base and the covering material, A filling material filled at least between the cylindrical member and the pipe, A construction method of a floor structure including at least a sealing member attached to the outer peripheral surface of at least the pipe to prevent the filling material from leaking downward, A frame hole forming step of cutting the floor form in an endless shape inside the cylindrical member to form the frame hole having a smaller diameter than the inner diameter of the cylindrical member, A splicing sleeve installation step of inserting a splicing sleeve having a cylindrical shape and a locking portion protruding outward formed at the upper part and having a length such that at least the lower part can protrude below the covering material into the frame hole from above, and locking the locking portion to the portion of the floor form where the frame hole is formed, and providing the splicing sleeve and the cylindrical member in series, A covering material spraying step of spraying the covering material outside the splicing sleeve on the lower surface of the floor form after the splicing sleeve installation step, A pipe insertion step of inserting the pipe into the cylindrical member and the splicing sleeve, A pasting step of pasting the sealing member from the outer peripheral surface of the portion of the pipe protruding below the splicing sleeve through the inside of the splicing sleeve to the outer peripheral surface of the portion of the splicing sleeve protruding below the covering material after the pipe insertion step, A construction method of a floor structure including a filling step of filling the filling material between the pipe, the cylindrical member, and the splicing sleeve after the pasting step.

[0030] According to the above means 6, the same operational effects as those of the above means 1 and 3 are achieved.

[0031] After constructing a vertical formwork with a combustible cylindrical member temporarily installed on the floor formwork corresponding to the formwork holes formed in the specified floor formwork, a floor base is formed by placing a specified floor material outside the cylindrical member on the floor formwork, a coating material sprayed on the lower surface of the floor formwork, a pipe provided in a state of penetrating the floor base and the coating material vertically through a portion in the floor base corresponding to the removal location of the cylindrical member and through the formwork hole, a filling material filled at least between a portion in the floor base corresponding to the removal location of the cylindrical member and the pipe, A construction method for a floor structure comprising at least a sealing member attached to the outer peripheral surface of the pipe to prevent leakage of the filling material downward, a cylindrical member removal step of removing the cylindrical member after the floor material is placed, a formwork hole forming step of cutting the floor formwork in an endless shape inside a portion in the floor base corresponding to the removal location of the cylindrical member to form the formwork hole having a smaller diameter than the inner diameter of the cylindrical member, a splicing sleeve installation step of inserting a splicing sleeve having a cylindrical shape and a locking portion formed at the upper part protruding outward, and having a length such that at least the lower part can protrude below the coating material, into the formwork hole from above, and locking the locking portion to a portion of the floor formwork where the formwork hole is formed, and providing the splicing sleeve and a portion in the floor base corresponding to the removal location of the cylindrical member in series, a coating material spraying step of spraying the coating material outside the splicing sleeve on the lower surface of the floor formwork after the splicing sleeve installation step, a pipe insertion step of inserting the pipe into a portion in the floor base corresponding to the removal location of the cylindrical member and into the splicing sleeve, After the pipe insertion process, a pasting process of pasting the sealing member from the outer peripheral surface of the part of the pipe that passes through the additional sleeve and protrudes below the additional sleeve to the outer peripheral surface of the part of the additional sleeve that protrudes below the coating material; After the pasting process, a filling process of filling the filling material between the pipe, the part of the floor base corresponding to the removal location of the cylindrical member, and the additional sleeve, characterized in that the construction method of the floor structure includes these processes.

[0032] According to the above means 7, the same effects as those of the above means 2 and 3 will be achieved.

[0033] Means 8. A floor base formed by placing a predetermined floor material on a predetermined floor formwork, and a through hole penetrating the floor formwork and the floor material is formed after the placement of the floor material, A coating material sprayed on the lower surface of the floor formwork, A pipe provided in a state of penetrating the floor base and the coating material up and down through the through hole, A filling material filled between at least the through hole forming part, which is the part of the floor base where the through hole is formed, and the pipe, A construction method of a floor structure including at least a sealing member pasted on the outer peripheral surface of the pipe to prevent the filling material from leaking downward, An additional sleeve forming a plurality of supports at the upper part by forming a plurality of slits extending in the axial direction or obliquely to the axis at the upper part and bending the part located between the slits outward, and having a length such that at least the lower part can protrude below the coating material, is inserted into the through hole from above, and while pressing the plurality of supports against the through hole forming part, it is fixed to the through hole forming part with a predetermined caulking material, and the additional sleeve and the through hole forming part are provided in series. The additional sleeve installation process; After the additional sleeve installation process, a coating material spraying process of spraying the coating material outside the additional sleeve on the lower surface of the floor formwork; A pipe insertion step of inserting the pipe into the through hole and the added sleeve; After the pipe insertion step, an attachment step of attaching the sealing member from the outer peripheral surface of the portion of the pipe that passes through the added sleeve and protrudes below the added sleeve to the outer peripheral surface of the portion of the added sleeve that protrudes below the covering material; A construction method for a floor structure, characterized by including a filling step of filling the filling material between the pipe, the through hole forming portion, and the added sleeve after the attachment step.

[0034] According to the above means 8, the same operational effects as those of the above means 4 and 5 will be achieved.

Brief Description of the Drawings

[0035]

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Embodiments for Carrying Out the Invention

[0036] Hereinafter, embodiments will be described with reference to the drawings. 〔First Embodiment〕 The floor structure 11 is a structure corresponding to the floor of a building, and as shown in FIG. 1, it includes a floor base 12, a covering material 13, a pipe 14, an extension sleeve 15, a sealing member 16, and a filling material 17.

[0037] The floor base 12 is a composite floor formed by placing a predetermined floor material 122 (for example, concrete, mortar, etc.) on a floor form 121 made of thin steel plate. In this embodiment, the floor form 121 is a so-called flat deck, and while being bent so that a rib portion 121a for ensuring rigidity protrudes downward, the upper surface is configured to be a flat surface. Note that the floor form 121 may have some irregularities on its upper surface.

[0038] Also, the floor base 12 includes a cylindrical member 123 for preventing the floor material 122 from being placed at a planned formation site of a frame hole 121b (described later) of the floor form 121. The cylindrical member 123 has a cylindrical shape and is formed of a predetermined thin metal plate. Note that the cylindrical member 123 may be, for example, other than a cylindrical shape (for example, a rectangular cylindrical shape, etc.), or may be one in which a lattice for preventing falling is formed on the inner circumference. Further, as another example, the cylindrical member 123 has a cylindrical or rectangular cylindrical shape, but is a vertical formwork formed of a combustible material such as a predetermined paper or resin corrugated board, and may be removed after the placement of the floor material 122.

[0039] In this embodiment, after installing the cylindrical member 123 on the floor form 121 corresponding to the planned formation site of the frame hole 121b described later, the floor material 122 is placed outside the cylindrical member 123 on the floor form 121, thereby preventing the placement of the floor material 122 at the planned formation site of the frame hole 121b. Before placing the floor material 122, mesh bars, assembled reinforcing bar trusses, or normal reinforcement bars are arranged on the floor form 121, and the floor material 122 is placed so that these mesh bars and the like are embedded. In addition, a lid (not shown) for closing the upper opening of the cylindrical member 123 may be installed, or a member for closing the gap between the upper surface of the floor form 121 and the lower end of the cylindrical member 123 may be arranged, and then the floor material 122 may be placed. Further, depending on the size of the cylindrical member 123, reinforcing bars may be arranged around the cylindrical member 123 for reinforcing the floor base 12.

[0040] Furthermore, at a position overlapping with the inside of the cylindrical member 123 in the floor base 12, a frame hole 121b penetrating the floor form 121 is formed. The frame hole 121b is used for passing the pipe 14 and is formed after the placement of the floor material 122. More specifically, basically, after the placement of the floor material 122, a space for inserting the pipe 14 is formed by the inner space of the cylindrical member 123. However, since only the floor form 121 exists in a form that obstructs its insertion, the floor form 121, which is a thin steel plate, is cut and removed endlessly inside the cylindrical member 123, thereby forming a frame hole 121b having a smaller diameter than the inner diameter of the cylindrical member 123. Also, when using a cylindrical member 123 formed of a combustible material, this cylindrical member 123 is removed after the placement of the floor material 122. After that, there is only no cylindrical member 123, and a space for inserting the pipe 14 is formed by the inner space of the part corresponding to the removal location of the cylindrical member 123 in the floor base 12, and there is no change in that only the floor form 121 exists in a form that obstructs its insertion. Therefore, also in this case, the floor form 121, which is a thin steel plate, is cut and removed endlessly inside the cylindrical member 123 or inside the part corresponding to the removal location of the cylindrical member 123 in the floor base 12 (the cylindrical space formed after the solidification of the floor material 122 due to the presence of the cylindrical member 123), thereby forming a frame hole 121b having a smaller diameter than the inner diameter of the cylindrical member 123.

[0041] Also, as described above, since the inner diameter of the frame hole 121b is made smaller than the inner diameter of the cylindrical member 123, the frame hole forming portion 121c, which is the portion of the floor form 121 where the frame hole 121b is formed, has an inner flange shape that protrudes inward from the inner peripheral surface of the cylindrical member 123 (or the portion where the cylindrical member 123 existed). Incidentally, the shape of the frame hole 121b is not particularly limited as long as the frame hole forming portion 121c protrudes inward from the inner peripheral surface of the cylindrical member 123 (or the portion where the cylindrical member 123 existed), and for example, it may be rectangular in plan view or polygonal in plan view.

[0042] The covering material 13 is provided by being sprayed outside the splicing sleeve 15 on the lower surface of the floor form 121 after the formation of the frame hole 121b, and covers the entire lower surface of the floor form 121. Examples of the covering material 13 include heat insulating materials and refractory covering materials. Incidentally, there are a large number of fine irregularities on the surface of the covering material 13.

[0043] The pipe 14 is formed of a predetermined metal plate and has a cylindrical shape. The pipe 14 is provided in a state of passing through the inside of the cylindrical member 123 (or the portion corresponding to the removed portion of the cylindrical member 123 in the floor base 12) and the frame hole 121b, and penetrating the floor base 12 and the covering material 13 vertically. Incidentally, the outer peripheral surface of the pipe 14 is a smooth surface.

[0044] The splicing sleeve 15 is a cylindrical member and has functions such as preventing the covering material 13 from overflowing into the space (the space where the pipe 14 is to be arranged) where the pipe 14 is arranged when the covering material 13 is sprayed. The splicing sleeve 15 is made of a thin metal plate (for example, an iron plate, etc.) with a thickness of, for example, 0.5 mm, and has an outer diameter that is slightly smaller than the inner diameter of the frame hole 121b (for example, an outer diameter that is 5 mm smaller than the inner diameter of the frame hole 121b).

[0045] Further, on the upper part of the extension sleeve 15, a flange-shaped locking portion 15a formed by, for example, flanging (flare processing) is protruded outward. Then, when the locking portion 15a is locked to the frame hole forming portion 121c, the extension sleeve 15 is provided in series with the cylindrical member 123 (or the portion corresponding to the removed portion of the cylindrical member 123 in the floor base portion 12). Incidentally, the locking portion 15a may have a tapered shape in which the outer diameter gradually increases toward the upper end of the extension sleeve 15.

[0046] Further, the extension sleeve 15 has a length such that at least the lower part can protrude below the covering material 13. In the present embodiment, the length of the extension sleeve 15 is set to a length that protrudes, for example, about 100 mm below the covering material 13. Further, the outer peripheral surface of at least the portion of the extension sleeve 15 that protrudes downward from the covering material 13 is a smooth surface that is smoother than the surface of the covering material 13.

[0047] The sealing member 16 is a sheet-like member in which an adhesive layer is provided on the back surface of a thin metal sheet made of, for example, aluminum or the like. The sealing member 16 is attached from the outer peripheral surface of the portion of the pipe 14 that passes through the extension sleeve 15 and protrudes below the extension sleeve 15 to the outer peripheral surface of the portion of the extension sleeve 15 that protrudes below the covering material 13 (see FIG. 2). Thereby, the gap S (see FIG. 3) located between the lower end of the extension sleeve 15 and the pipe 14 is blocked by the sealing member 16, and thus the leakage of the filling material 17 downward is prevented. Incidentally, the sealing member 16 before use is a flat sheet having a rectangular shape in plan view. The sealing member 16 is used after bending and spreading the circular portion 16a located at the center thereof outward (see FIG. 4). In FIG. 1 and the like, the portion of the sealing member 16 that is particularly attached to the extension sleeve 15 is shown in a simplified manner.

[0048] The filling material 17 is filled between the outer peripheral surface of the pipe 14 and the inner peripheral surfaces of the cylindrical member 123 (or the portion corresponding to the removal location of the cylindrical member 123 on the floor base 12) and the extension sleeve 15. Examples of the filling material 17 include mortar and rock wool.

[0049] Next, the construction method (construction process) of the floor structure 11 described above will be explained. As shown in FIG. 5, the construction process of the floor structure 11 includes a placing process, a frame hole forming process, an extension sleeve installation process, a coating material spraying process, a pipe insertion process, an attaching process, and a filling process. Here, the construction of the floor structure 11 is shared between the construction side and the equipment installation side. At least the extension sleeve installation process, the pipe insertion process, and the attaching process are carried out by the equipment installation side, and at least the coating material spraying process is carried out by the construction side.

[0050] First, in the placing process of step S1, after installing the cylindrical member 123 on the floor form 121 corresponding to the planned formation location of the frame hole 121b and performing reinforcement (not shown), the floor material 122 is placed outside the cylindrical member 123 on the floor form 121.

[0051] Next, in the frame hole forming process of step S2, by using a predetermined cutting tool (such as a circular saw), the floor form 121 is cut in an endless shape inside the cylindrical member 123 to form a frame hole 121b in the floor form 121. Along with the formation of the frame hole 121b, an inner flange-shaped frame hole forming portion 121c that protrudes inside the inner peripheral surface of the cylindrical member 123 is formed on the floor form 121. In addition, when a cylindrical member 123 made of a combustible material is used, a "cylindrical member removal process" for removing the cylindrical member 123 is carried out. For example, when the cylindrical member 123 is composed of a paper void, since a release agent is usually applied to the outer surface of the paper void, the cylindrical member 123 can be peeled off and removed by deforming the paper void to be recessed toward the inner side of the space. In addition, when a cylindrical member 123 made of a combustible material is used, the frame hole 121b can be formed by cutting the floor form 121 inside the portion corresponding to the removal location of the cylindrical member 123 on the floor base 12.

[0052] Next, in the additional sleeve installation step of step S3, the additional sleeve 15 is inserted into the frame hole 121b from above, and the locking portion 15a is locked to the frame hole forming portion 121c, so that the additional sleeve 15 and the cylindrical member 123 (or the portion corresponding to the removal location of the cylindrical member 123 in the floor base 12) are provided in series (see Fig. 6. Figs. 6 to 9 are diagrams when the cylindrical member 123 is finally left). In addition, when the cylindrical member removal step is performed, the additional sleeve 15 and the portion corresponding to the removal location of the cylindrical member 123 in the floor base 12 (in this embodiment, the floor material 122 located immediately outside the cylindrical member 123 in Fig. 6) are provided in series. The additional sleeve installation step is performed by the facility construction side. In addition, a member for closing the gap between the locking portion 15a and the frame hole forming portion 121c may be arranged therebetween. This member may be fixed to the locking portion 15a in advance before the additional sleeve 15 is inserted into the frame hole 121b.

[0053] In the subsequent coating material spraying step of step S4, the coating material 13 is sprayed outside the additional sleeve 15 on the lower surface of the floor form 121 (see Fig. 7). The coating material spraying step is performed by the building construction side, not the facility construction side. Due to the presence of the additional sleeve 15, usually, the building construction side does not spray the coating material 13 into the cylindrical member 123 side (inside the additional sleeve 15), but only sprays the coating material 13 outside the additional sleeve 15.

[0054] Next, in the pipe insertion step of step S5, the pipe 14 is inserted into the cylindrical member 123 (or the portion corresponding to the removal location of the cylindrical member 123 in the floor base 12) and inside the additional sleeve 15 (see Fig. 8). The pipe insertion step is performed by the facility construction side. Here, when the pipe 14 is inserted, since the coating material 13 does not exist at a position that obstructs the insertion and installation of the pipe 14, the pipe 14 can be inserted without removing the excess coating material 13. In addition, the pipe insertion step may be performed before the coating material spraying step.

[0055] Next, in the pasting step of step S6, a sealing member 16 is pasted from the outer peripheral surface of the portion of the pipe 14 that protrudes below the additional sleeve 15 to the outer peripheral surface of the portion of the additional sleeve 15 that protrudes below the covering material 13 (see Fig. 9).

[0056] Thereafter, in the filling step of step S7, the floor structure 11 is completed by filling a filling material 17 between the pipe 14, the cylindrical member 123 (or the portion corresponding to the removal location of the cylindrical member 123 in the floor base 12), and the additional sleeve 15. Note that the floor structure 11 from which the cylindrical member 123 is finally removed has the configuration shown in Fig. 26.

[0057] As described above, according to the present embodiment, by providing the additional sleeve 15, it is possible to more reliably prevent excess covering material 13 that would interfere with inserting the pipe 14 from adhering when spraying the covering material 13. As a result, the operation of cutting and removing the excess covering material 13 becomes unnecessary. Accordingly, when removing the covering material 13, the covering material 13 will not be excessively peeled or chipped, and thus the repair work on the covering material 13 by the construction side becomes unnecessary. As a result, the separation between the construction work by the construction side and the equipment work by the equipment side is improved, and the construction period can be compressed.

[0058] In addition, it is possible to more reliably prevent a deterioration in appearance due to the presence of removal and repair portions in the covering material 13, and a good appearance quality can be obtained. Furthermore, since removal and repair of the covering material 13 are unnecessary, it is possible to more reliably exhibit the intended functions (such as heat insulation performance and fire resistance performance) by providing the covering material 13, and the quality of the floor structure 11 can be improved.

[0059] In addition, the sealing member 16 is pasted not on the surface of the covering material 13 but on the outer peripheral surface of the portion of the additional sleeve 15 that protrudes below the covering material 13. Therefore, compared to the case where the surface of the covering material 13 is the pasting target, the sealing member 16 can be made more difficult to peel off, and the appearance related to the pasting state of the sealing member 16 can be improved.

[0060] Furthermore, in order to attach the sealing member 16 (to ensure the surface to which the sealing member 16 is to be attached), it is not necessary to configure a part of the floor formwork 121 not to be covered with the covering material 13. Thereby, the intended function by providing the covering material 13 can be more surely exhibited. 〔Second Embodiment〕 Next, the second embodiment will be described centering on the differences from the first embodiment. In the first embodiment, the floor base 12 of the floor structure 11 is formed by installing the cylindrical member 123 on the floor formwork 121 corresponding to the frame holes 121b of the floor formwork 121 and then placing the floor material 122 outside the cylindrical member 123 on the floor formwork 121. On the other hand, in the second embodiment, as shown in FIG. 10, the floor base 22 of the floor structure 21 is formed by placing the floor material 222 on the floor formwork 221 and then forming a through hole 22a that penetrates the floor formwork 221 and the floor material 222 by a core removal method or the like. Therefore, in the floor base 22 in the second embodiment, the through hole 22a for passing the pipe 24 is formed without using the cylindrical member 123, and the through hole 22a has a constant inner diameter in the vertical direction, and the portion (frame hole forming portion 221c) of the floor formwork 221 that forms the frame hole 221b does not protrude inward.

[0061] Note that the floor formwork 221 in the second embodiment is a so-called fellow deck (registered trademark), and reinforcing bars (not shown) such as reinforcing bars are previously arranged on the upper surface. The reinforcing bars are in a state of being embedded in the floor material 222 by placing the floor material 222 on the floor formwork 221. The through hole 22a is formed after placing the floor material 222.

[0062] Also, in the second embodiment, corresponding to the configuration in which the frame hole forming portion 221c does not protrude inward as described above, the additional sleeve 25 has a configuration in which a plurality of support portions 25a are provided at its upper portion. Here, the plurality of support portions 25a are provided by forming a plurality of slits 25b extending in the axial direction (the central axis direction of the additional sleeve 25) at the upper portion of the additional sleeve 25 and bending the portions of the additional sleeve 25 located between the slits 25b outward (see FIGS. 11 and 12). Note that the slit 25b may extend obliquely with respect to the axis of the additional sleeve 25.

[0063] Then, the additional sleeve 25 is provided in series with the through-hole forming portion 22b by a plurality of support portions 25a being in pressure contact with the through-hole forming portion 22b, which is the portion forming the through-hole 22a in the floor base portion 22, and the support portions 25a and the like being fixed to the through-hole forming portion 22b by a predetermined caulking material 28. The caulking material 28 is, for example, a silicone-based caulking material (sealing material) or the like and hardens over time. Note that due to the presence of the caulking material 28, the space inside the through-hole forming portion 22b and the space outside the additional sleeve 25 do not communicate through the gaps between the respective support portions 25a.

[0064] Also, the covering material 23, the pipe 24, the sealing member 26, and the filling material 27 in the second embodiment are the same as the covering material 13, the pipe 14, the sealing member 16, and the filling material 17 in the first embodiment. However, in the second embodiment, the pipe 24 is provided in a state of passing through the through-hole 22a and penetrating the floor base portion 22 and the covering material 23 vertically. Further, the filling material 27 is filled between the outer peripheral surface of the pipe 24 and the inner peripheral surfaces of the through-hole forming portion 22b and the additional sleeve 25.

[0065] Next, the construction method (construction process) of the floor structure 21 in this second embodiment will be described. As shown in FIG. 13, the construction process of the floor structure 21 includes a placing process, a through-hole forming process, an additional sleeve installation process, a coating material spraying process, a pipe insertion process, an attachment process, and a filling process. Here, at least the additional sleeve installation process, the pipe insertion process, and the attachment process are performed by the facility construction side, and at least the coating material spraying process is performed by the building construction side.

[0066] First, in the placing process of step S11, the floor material 222 is placed on the floor formwork 221 in which reinforcing bars are previously arranged. Next, in the through-hole forming process of step S12, using a core drilling tool such as a diamond core drill (diamond core cutter), the floor material 222 and the floor formwork 221 are cut out to form a through-hole 22a in the floor base 22.

[0067] Subsequently, in the additional sleeve installation process of step S13, the additional sleeve 25 is inserted into the through-hole 22a from above, and a plurality of support portions 25a are brought into pressure contact with the lower portion of the through-hole forming portion 22b (see FIGS. 14 and 15). Further, by injecting a caulking material 28 to the outer peripheral side of the support portion 25a or the like, the additional sleeve 25 is fixed to the through-hole forming portion 22b by the caulking material 28, and the additional sleeve 25 and the through-hole forming portion 22b are provided in series (see FIG. 16). The additional sleeve installation process is performed by the facility construction side.

[0068] Subsequently, in the coating material spraying process of step S14, the coating material 23 is sprayed outside the additional sleeve 25 on the lower surface of the floor formwork 221 (see FIG. 17). The coating material spraying process is performed by the building construction side.

[0069] Next, in the pipe insertion process of step S15, the pipe 24 is inserted into the through-hole 22a and the additional sleeve 25 (see FIG. 18). The pipe insertion process is performed by the facility construction side. Incidentally, the pipe insertion process may be performed before the coating material spraying process.

[0070] Next, in the pasting step of step S16, in the same manner as in the first embodiment, a sealing member 26 is pasted from the outer peripheral surface of the portion of the pipe 24 that protrudes downward from the additional sleeve 25 to the outer peripheral surface of the portion of the additional sleeve 25 that protrudes downward from the covering material 23 (see FIG. 19).

[0071] Thereafter, in the filling step of step S17, the construction of the floor structure 21 is completed by filling the filling material 27 between the pipe 24, the through-hole forming portion 22b, and the additional sleeve 25.

[0072] As described above, according to the second embodiment, basically, the same operational effects as those of the first embodiment are achieved.

[0073] In addition, in the second embodiment, the additional sleeve 25 has a plurality of support portions 25a formed by relatively simple methods such as the formation of the slit 25b and the bending process to the outside, and the plurality of support portions 25a are used to be provided in series with the through-hole forming portion 22b. Therefore, it is possible to effectively suppress an increase in the labor and cost involved in manufacturing the additional sleeve 25.

[0074] Note that the technical matters related to the first embodiment and the technical matters related to the second embodiment may be appropriately combined. For example, in the additional sleeve 15 in the first embodiment, a locking portion 15a having the same structure as the support portion 25a in the second embodiment may be provided.

[0075] Note that the present invention is not limited to the description of the above embodiments, and for example, it may be implemented as follows. Of course, other application examples and modification examples not illustrated below are also naturally possible.

[0076] (a) In the above embodiments, the additional sleeves 15 and 25 are cylindrical, but the additional sleeve may be in a cylindrical shape as long as it is cylindrical, and is not limited to a cylindrical shape. Therefore, for example, the additional sleeve may be in a rectangular cylindrical shape, an elliptical cylindrical shape, a polygonal cylindrical shape (such as a hexagonal cylindrical shape), or the like.

[0077] (b) In the above-described embodiment, the sealing members 16 and 26 are sheet-like members, but a tape (such as an aluminum tape, etc.) may be used as the sealing member. Of course, both a sheet-like member and a tape may be used as the sealing member.

[0078] (c) In the above-described embodiment, the floor forms 121 and 221 are exemplified as a flat deck and a fellow deck (registered trademark), but other deck plates may be used as the floor form.

[0079] (d) In the above-described embodiment, the pipes 14 and 24 are configured to be inserted into the cylindrical member 123 or the through hole 22a, etc., but for example, something other than a pipe, such as a cable for wiring, etc., may be configured to be inserted.

Explanation of Reference Numerals

[0080] 11, 12… floor structure, 12, 22… floor base, 13, 23… covering material, 14, 24… pipe, 15, 25… added sleeve, 15a… locking portion, 16, 26… sealing member, 17, 27… filling material, 22a… through hole, 22b… through hole forming portion, 25a… support portion, 25b… slit, 28… caulking material, 121, 221… floor form, 121b, 221b… frame hole, 122, 222… floor material, 123… cylindrical member.

Claims

1. A floor base having a cylindrical member installed on the floor form corresponding to a frame hole formed in a predetermined floor form, and a predetermined floor material being placed outside the cylindrical member on the floor form, A floor structure comprising a covering material sprayed on the lower surface of the floor form, The frame hole is formed by cutting the floor form in an endless shape inside the cylindrical member where the cylindrical member is installed, and has a smaller diameter than the inner diameter of the cylindrical member, A splicing sleeve having a cylindrical shape and having a locking portion protruding outward formed at the upper portion, and the locking portion being locked to a portion of the floor form where the frame hole is formed, thereby being provided in series with the cylindrical member, and having a length such that at least the lower portion can protrude below the covering material, The floor structure is characterized in that the covering material is sprayed outside the splicing sleeve on the lower surface of the floor form.

2. After constructing a vertical formwork with a combustible cylindrical member temporarily installed on the floor form corresponding to a frame hole formed in a predetermined floor form, a floor base having a predetermined floor material placed outside the cylindrical member on the floor form, A floor structure comprising a covering material sprayed on the lower surface of the floor form, The cylindrical member is to be removed after the floor material is placed, The frame hole is formed by cutting the floor form in an endless shape inside a portion corresponding to the removal location of the cylindrical member in the floor base, and has a smaller diameter than the inner diameter of the cylindrical member, A splicing sleeve having a cylindrical shape and having a locking portion protruding outward formed at the upper portion, and the locking portion being locked to a portion of the floor form where the frame hole is formed, thereby being provided in series with a portion corresponding to the removal location of the cylindrical member in the floor base, and having a length such that at least the lower portion can protrude below the covering material, The floor structure is characterized in that the covering material is sprayed outside the splicing sleeve on the lower surface of the floor form.

3. A pipe provided in a state of penetrating the floor base and the covering material vertically through the frame hole, A filling material filled at least between a portion corresponding to the cylindrical member in the floor base and the pipe, At least a sealing member attached to the outer peripheral surface of the pipe to prevent the filling material from leaking downward. The sealing member is attached from the outer peripheral surface of the portion of the pipe that passes through the extension sleeve and protrudes downward from the extension sleeve to the outer peripheral surface of the portion of the extension sleeve that protrudes downward from the covering material. The floor structure according to claim 1 or 2, characterized in that.

4. A floor base formed by placing a predetermined floor material on a predetermined floor formwork, and having a through hole formed through the floor formwork and the floor material, A floor structure comprising a covering material sprayed on the lower surface of the floor formwork, A plurality of slits are formed in the upper part in the axial direction or in an oblique direction with respect to the axis, and a plurality of support portions are formed in the upper part by bending the portion located between the slits outward. The plurality of support portions are provided in series with the through hole forming portion by being press - contacted with the through hole forming portion, which is the portion forming the through hole in the floor base, and being fixed to the through hole forming portion with a predetermined caulking material, and having an extension sleeve having a length such that at least the lower part can protrude below the covering material. The floor structure, characterized in that the covering material is sprayed outside the extension sleeve on the lower surface of the floor formwork.

5. A pipe provided in a state of passing through the through hole and vertically penetrating the floor base and the covering material, A filling material filled at least between the through hole forming portion and the pipe, A sealing member attached to at least the outer peripheral surface of the pipe to prevent the filling material from leaking downward, The sealing member is attached from the outer peripheral surface of the portion of the pipe that passes through the extension sleeve and protrudes downward from the extension sleeve to the outer peripheral surface of the portion of the extension sleeve that protrudes downward from the covering material. The floor structure according to claim 4, characterized in that.

6. A floor base having a cylindrical member installed on the floor formwork corresponding to a frame hole formed in the predetermined floor formwork, and a predetermined floor material being placed outside the cylindrical member on the floor formwork, A covering material sprayed on the lower surface of the floor formwork, A pipe provided in a state of passing through the inside of the cylindrical member and the frame hole and vertically penetrating the floor base and the covering material, A filling material filled at least between the cylindrical member and the pipe, A construction method for a floor structure, comprising a sealing member that is attached to at least the outer peripheral surface of the pipe to prevent the filler from leaking downward. A frame hole forming step of cutting the floor formwork endlessly inside the cylindrical member to form the frame hole having a smaller diameter than the inner diameter of the cylindrical member. A step of installing a splicing sleeve, which is cylindrical and has a locking portion protruding outward formed at the upper part and has a length such that at least the lower part can protrude below the covering material, inserting the splicing sleeve into the frame hole from above, and locking the locking portion to the portion of the floor formwork where the frame hole is formed, so as to provide the splicing sleeve and the cylindrical member in series. A covering material spraying step of spraying the covering material outside the splicing sleeve on the lower surface of the floor formwork after the step of installing the splicing sleeve. A pipe insertion step of inserting the pipe into the cylindrical member and the splicing sleeve. An attaching step of attaching the sealing member from the outer peripheral surface of the portion of the pipe that passes through the splicing sleeve and protrudes below the splicing sleeve to the outer peripheral surface of the portion of the splicing sleeve that protrudes below the covering material after the pipe insertion step. A construction method for a floor structure, characterized by including a filling step of filling the filler between the pipe, the cylindrical member and the splicing sleeve after the attaching step.

7. After constructing a vertical formwork with a combustible cylindrical member temporarily installed on the floor formwork corresponding to the frame hole formed in the predetermined floor formwork, a floor base formed by placing a predetermined floor material outside the cylindrical member on the floor formwork, A covering material sprayed on the lower surface of the floor formwork, A pipe provided in a state of passing through the floor base and the covering material vertically through a portion corresponding to the removal location of the cylindrical member in the floor base and through the frame hole, A filler filled at least between a portion corresponding to the removal location of the cylindrical member in the floor base and the pipe, A construction method for a floor structure, comprising a sealing member that is attached to at least the outer peripheral surface of the pipe to prevent the filler from leaking downward. A cylindrical member removing step of removing the cylindrical member after the floor material is placed. A frame hole forming step of cutting the floor formwork endlessly inside the portion corresponding to the removal location of the cylindrical member in the floor base to form the frame hole having a smaller diameter than the inner diameter of the cylindrical member. A method for constructing a floor structure, comprising: inserting a splicing sleeve, which is cylindrical and has a locking portion formed at the upper part and protruding outward, into the frame hole from above, and locking the locking portion to a portion of the floor formwork where the frame hole is formed, and providing the splicing sleeve and a portion corresponding to a removal portion of the cylindrical member in the floor base in series; After the step of installing the splicing sleeve, a step of spraying a covering material outside the splicing sleeve on the lower surface of the floor formwork; A step of inserting a pipe into a portion corresponding to a removal portion of the cylindrical member in the floor base and into the splicing sleeve; After the step of inserting the pipe, a step of attaching a sealing member from an outer peripheral surface of a portion of the pipe that passes through the splicing sleeve and protrudes below the splicing sleeve to an outer peripheral surface of a portion of the splicing sleeve that protrudes below the covering material; After the step of attaching, a step of filling a filling material between the pipe, a portion corresponding to a removal portion of the cylindrical member in the floor base, and the splicing sleeve.

8. A floor base formed by placing a predetermined floor material on a predetermined floor formwork and forming a through hole that penetrates the floor formwork and the floor material after the placement of the floor material; A covering material sprayed on the lower surface of the floor formwork; A pipe provided in a state of passing through the through hole and vertically penetrating the floor base and the covering material; A filling material filled between at least a through hole forming portion, which is a portion of the floor base where the through hole is formed, and the pipe; A method for constructing a floor structure, comprising: a sealing member attached to at least an outer peripheral surface of the pipe to prevent leakage of the filling material downward. A splicing sleeve having a cylindrical shape, with a plurality of slits formed in the upper part extending in the axial direction or obliquely with respect to the axis, and a plurality of support portions formed in the upper part by bending the portions located between the slits outward, and having a length such that at least the lower part can protrude below the covering material, is inserted into the through hole from above, and while pressing the plurality of support portions against the through hole forming portion, it is fixed to the through hole forming portion with a predetermined caulking material, and the splicing sleeve and the through hole forming portion are provided in series, a splicing sleeve installation step; After the splicing sleeve installation step, a covering material spraying step of spraying the covering material outside the splicing sleeve on the lower surface of the floor formwork; A pipe insertion step of inserting the pipe into the through hole and the splicing sleeve; After the pipe insertion step, an attaching step of attaching the sealing member from the outer peripheral surface of the portion of the pipe that passes through the splicing sleeve and protrudes below the splicing sleeve to the outer peripheral surface of the portion of the splicing sleeve that protrudes below the covering material; After the attaching step, a filling step of filling the filling material between the pipe, the through hole forming portion, and the splicing sleeve, a construction method of a floor structure characterized by including the above steps.

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