JP4412731B2 - Floating floor construction method and floating floor structure - Google Patents

Description

  The present invention relates to a floating floor construction method and a floating floor structure for constructing a floating floor for relaxing floor impact noise on upper and lower floors in an apartment house or the like.

  In apartment houses such as condominiums, hospitals, hotels, schools, etc., floor impact noise is likely to occur between the upper and lower floors, and a floating floor with high floor impact noise mitigation performance is installed as a countermeasure. Conventionally, when installing such a floating floor, after completing the partition inside the dwelling unit, laying a buffer material such as glass wool or rock wool, forming a waterproof layer, and then placing mortar on the top Yes. It is common to form a floating floor in this way.

  Although the floating floor method disclosed in the following Patent Document 1 and the following Patent Document 2 has its own anti-vibration support column part, the partitioning is completed after the completion of the frame construction, and then the floating floor construction is performed. Wet mortar and concrete of wet materials will be handled in a narrow space where the upper and lower slabs are also completed. Thus, in these floating floor construction methods, since floating floor construction is performed in a closed space, both the process and the construction method are very complicated.

Further, as described in Patent Document 3 (0003 to 0006) below, there is a limit to the increase in the weight of the floating floor portion, and there is a limit to the performance improvement. For this reason, when the load on the floor is large and a large vibration isolation effect is required, a concrete anti-vibration floating floor as shown in FIG. 8 of Patent Document 3 is adopted. The overall thickness was thick.
JP 2003-328538 A JP-A-9-228613 Japanese Patent Laid-Open No. 8-319711

  The present invention provides a floating floor construction method and a floating floor structure that can realize a significant cost reduction and construction period reduction in the construction of a floating floor layer with high sound insulation, in view of the problems of the conventional technology as described above. Objective.

In order to achieve the above object, the floating floor construction method according to the present invention includes a deck plate in a state where the deck plate is disposed above a reinforced concrete slab surface made of a full PCa plate through a plurality of support columns having an anti-vibration effect. A floating floor method for forming a floating floor layer by a synthetic slab by placing concrete or mortar on the deck plate after installing a concrete stopper on the outer edge of the plurality of the full PCa plates. A plurality of the deck plates are arranged so that a joint position of the full PCa plate when installed and a joint position of the composite slab when installing a plurality of the composite slabs are substantially the same in the upper and lower directions, Next, concrete is placed at the joint position of the full PCa plate, and then the joint is placed at the joint position of the synthetic slab. Characterized in that the cement plate after installing perform pouring of the concrete or mortar in the deck plate.

  According to this floating floor method, a concrete stop is installed on the outer edge of the deck plate placed above the reinforced concrete slab surface via a plurality of columns, and then concrete or mortar is placed on the deck plate. By doing so, a floating floor layer having high sound insulation can be formed. For this reason, the placement of the concrete mortar for forming the floating floor layer can be performed at the time of placing the concrete during the construction of the structure. Therefore, it is not necessary to perform floating floor construction in a narrow closed space after partitioning is completed after completion of the frame construction as in the prior art, so that significant cost reduction and construction period reduction are possible.

  In the floating floor construction method, it is preferable that the deck plate to which the plurality of support columns are attached is disposed above the reinforced concrete slab surface. In this way, by attaching a vibration-proof strut to the deck plate in advance and placing the deck plate above the reinforced concrete slab, the strut can be easily and accurately placed between the reinforced concrete slab surface and the deck plate in a short time. Can be installed well.

  Moreover, it is preferable to install the said reinforced concrete slab with a full PCa board. As a result, the number of man-hours on site can be greatly reduced.

  The deck plate may have a corrugated shape with a convex crest and a concave trough on the upper surface, and the support column may be disposed on the crest on the lower surface of the deck plate. preferable. Thereby, the whole height of a reinforced concrete slab and a synthetic | combination slab can be restrained low.

Further, the joint position of the full PCa plate when the full PCa plate installed plurality, and the joint position of the combined slab when the composite slab installed plurality, and child at substantially the same position in the vertical more, after completing the pouring of concrete joint position of the full PCa plate, carrying out the pouring of the concrete or mortar after installing the joint plate in the deck plate to the joint position of the composite slab Is possible.

  Further, at least one of the formwork for the doorway wall and the formwork for forming the outer wall in the girder is formed by taking out from the reinforced concrete slab side, and after the construction of the floating floor, the upper frame construction can be performed by the formwork. it can.

  The floating floor structure according to the present invention is constructed by the above-described floating floor construction method. According to this floating floor structure, it is possible to realize a significant cost reduction of a floating floor having a floating floor layer with high sound insulation.

  According to the floating floor construction method and the floating floor structure of the present invention, it is possible to realize significant cost reduction and construction period reduction in the construction of the floating floor layer having high sound insulation.

  The best mode for carrying out the present invention will be described below with reference to the drawings. FIG. 1 is a schematic view of a floating floor structure according to the floating floor construction method of the present embodiment as viewed from the front. 2 is a plan view (a) of a section where a plurality of full PCa plates of FIG. 1 are installed, and a plan view (b) of a section where a floating floor layer is arranged on the full PCa plate of FIG. FIG. 3 is a front view showing the structure of the floating floor in the vicinity of the beam in FIG. FIG. 4 is a side view showing a joint portion between the full PCa plate and the full PCa plate of FIG.

  The floating floor structure shown in FIG. 1 has a full PCa plate 11 installed as a reinforced concrete slab between a beam 1 and a beam 2 in the vertical direction and a relatively short columnar shape on the full PCa plate 11 at a predetermined interval. It comprises a plurality of anti-vibration rubber struts 13 and a deck synthetic slab 12 arranged as a floating floor layer above the full PCa plate 11 via the plurality of anti-vibration rubber struts 13.

  As shown in FIGS. 2 (a) and 2 (b), a plurality of full PCa plates 11 are arranged in one section 10, 10 'of the apartment, and then water is placed in one section 10' as shown in FIG. 2 (b). Except for the surrounding area 15, a plurality of anti-vibration rubber struts 13 are arranged at predetermined intervals, and a deck composite slab 12 is formed thereon. After that, the individual rooms are partitioned.

  In addition, a full PCa board is manufactured in the factory by one piece of reinforced concrete slabs by precast (PCa), and concrete placement for slabs at the construction site, excluding the joint part between the precast boards, It is unnecessary.

  As shown in FIGS. 1 and 2, the doorway wall 5 is located between the sections 10 and 10 'in which the necessary number of full PCa plates 11 are laid, as indicated by the broken lines in FIG. The beam portion 3 is located in the direction perpendicular to the sheet of FIG.

  The floating floor construction shown in FIGS. 1 and 2 will be described with reference to FIGS. As shown in FIG. 3, the deck plate 21 is arranged so that the plurality of anti-vibration rubber columns 13 are positioned on the full PCa plate 11. The deck plate 21 is made of steel, stainless steel, or the like, and is configured in a wave shape by a peak portion 21a and a valley portion 21b as shown in FIG. Further, as shown in FIG. 3, a concrete fixing member 35 is erected on the outer edge portion of the deck plate 21 in the vicinity of the lower end of the door boundary wall 5 indicated by a broken line.

  As shown in FIG. 4, the entire height of the floor slab + floating floor slab can be suppressed as much as possible by setting the deck plate 21 so that the anti-vibration rubber strut 13 is positioned on the mountain portion 21a. At this time, a plurality of anti-vibration rubber struts 13 are attached in advance to a predetermined position of the peak portion 21a of the deck plate 21 by bonding or the like, and the deck plate 21 is set on the full PCa plate 11, thereby The arrangement of the anti-vibration rubber struts 13 can be performed very easily and accurately in a short time.

  The deck composite slab 12 is formed by placing concrete on the deck plate 21 as shown by the broken line in FIG.

  As shown in FIG. 3, below the door wall 5, a formwork 23 is disposed inside the beam 2 by being supported by a formwork support 26 a, and between the upper end of the beam 2 and the lower surface of the full PCa plate 11. The mold 24 is arranged with support by the mold support 26b. A reinforcing bar 25 is arranged in the mold 24. Further, an L-shaped form wall 22 for the door wall made of stainless steel or the like is disposed at the end of the full PCa plate 11 corresponding to the door wall 5.

  After arranging and supporting each member as shown in FIG. 3, concrete is placed on the deck plate 21 as described above, and the direction of the arrow C in FIG. Concrete is placed into the molds 24 and 23 of the beam 2.

  As described above, the concrete placement for forming the deck composite slab 12 (floating floor layer) having the floating floor structure and the concrete placement inside the beam 2 can be performed at the same time.

  Further, in the joint portion 30 between the full PCa plates 11 and 11 at the longitudinal end portion of the full PCa plate 11 as shown in FIG. 2A, as shown in FIG. 4, a concave portion 30a formed in the joint portion 30. After the concrete is cast and the upper portion of the joint portion 30 is closed by the closing plate 31, the concrete 32 shown by the broken line in FIG. 4 is placed on the deck plate 21 as described above. The concrete placed in the recess 30a can ensure the transmission of the in-plane shear force at the joint 30 in the full PCa plate 11.

  Next, the construction procedure of the floating floor of FIGS. 1 and 2 will be further described with reference to FIGS. FIGS. 5 to 11 are top views of FIGS. 3 and 4, and are diagrams for explaining each construction in the door wall of FIG. 3 and the joint portion of FIG. 4.

  When each full PCa plate 11 is arranged as shown in FIG. 5, the joint portion 30 between the full PCa plates 11 and 11 at the end in the longitudinal direction (lateral direction in FIG. 5) of the full PCa plate 11 Thus, the recess 30a is formed. In addition, indentations 30b are intermittently formed in the longitudinal direction of the recesses 30a so as to increase the longitudinal width w of the recesses 30a. A beam 2 is located at the center of FIG. 5 and a beam 3 in the horizontal direction is located at the door boundary wall 5 (FIGS. 1 and 3) between the longitudinal ends of each full PCa plate 11.

  Next, as shown in FIG. 6, the door wall mold 22 of FIG. 3 made of stainless steel or the like is disposed between the longitudinal ends of the pair of full PCa plates 11.

  Next, as shown in FIG. 7, the deck plate 21 of FIG. 3 to which the anti-vibration rubber support 13 of FIGS. 1 to 4 is attached in advance is laid on each full PCa plate 11 of FIG. At this time, the joint portion 30 of the full PCa plate 11 at the end portion in the longitudinal direction of the full PCa plate 11 and the portion of the door wall mold 22 located on the joint portion 30 are open.

  Next, as shown in FIG. 8, a pair of L-shaped deck concrete stoppers 35 are installed on the outer edge of the deck plate 21 along the horizontal beam portion 3. The deck concrete retaining member 35 is preferably made of the same material as the deck plate 21.

  Next, as shown in FIG. 9, concrete 36 and 37 are placed on the beam portion 3 and the joint portion 30 of FIG. 8 including the beam 2 portion of FIG. 3.

  Next, as shown in FIG. 10, the opening between the deck plates 21 is closed by disposing the closing plate 31 between the deck plates 21 in the upper portion (FIG. 4) of the concrete 37 placed in the joint portion 30 of FIG. 9. . The closing plate 31 is preferably made of the same material as the deck plate 21.

  Next, as shown in FIG. 11, concrete 32 (see FIG. 4) is placed on the entire deck plate 21 of FIG.

  Next, with reference to FIG. 12, the construction of the floating floor in the vicinity of the outer wall portion in FIG. 2 will be described. FIG. 12 is a front view (a) showing the structure of the floating floor in the vicinity of the beam 1 on the outer wall portion in FIG. 2 and a view (b) showing a state in which the formwork of the next floor is built.

  As shown in FIG. 12A, the deck plate 21 is arranged so that a plurality of vibration-proof rubber columns 13 are positioned on the full PCa plate 11 in the upper part of the beam 1. At this time, similarly to FIG. 4, the deck plate 21 to which the anti-vibration rubber support column 13 is attached in advance at a predetermined position of the peak portion 21 a (FIG. 4) of the deck plate 21 is set on the full PCa plate 11. Further, similarly to FIG. 3, a concrete fixing member 35 is erected on the outer edge portion of the deck plate 21 on the outer wall portion 1 a side indicated by a broken line in the drawing. The deck composite slab 12 is formed by placing concrete on the deck plate 21 as shown by broken lines in the figure.

  As shown in FIG. 12 (a), below the deck composite slab 12, a formwork 53 is arranged inside the beam 1 with support by a formwork support 56a. A reinforcing bar 55 is arranged in the mold 53. Further, an L-shaped form wall 22 for the door wall made of stainless steel or the like is disposed at the end of the full PCa plate 11 corresponding to the outer wall portion 1a.

  After each member is arranged and supported as shown in FIG. 12 (a), concrete is placed on the deck plate 21 as described above, and the concrete is beamed from the upper part of the beam 1 in the direction of arrow C 'in the figure. By casting into one mold 54, both concrete can be cast at the same time.

  Next, as shown in FIG. 12 (b), for the construction of the outer wall portion 1a above the deck composite slab 12, the formwork 53 is disposed by being supported by the formwork support 56a so as to be connected to the formwork 54. By doing so, the formwork of the next floor can be built.

  As described above, the formwork 54 is formed by being taken out from the full PCa plate 11 side, and the upper frame work can be performed by the formwork 54 after the floating floor is constructed.

  As described above, according to the floating floor construction method of the present embodiment, when placing a reinforced concrete slab of a structure or a concrete of a structure, the concrete of the floating floor layer can be placed simultaneously. In addition, it is possible to avoid the complicated method of performing floating floor construction in individual rooms after completion of finishing partitioning in the conventional floating floor construction, and it becomes possible to construct floating floor layers at once when placing concrete in the building, both in terms of process and construction method Very simple. Thus, since the floating floor layer with high sound insulation can be formed at the time of concrete placement at the time of constructing the structure, it is possible to greatly reduce the cost and the construction period.

  As described above, the best mode for carrying out the present invention has been described. However, the present invention is not limited to these, and various modifications are possible within the scope of the technical idea of the present invention. For example, the floating floor method is suitable for construction of apartment houses such as apartments, but is not limited thereto, and may be applied to construction of hospitals, hotels, schools, etc. It can also be applied to the construction of building machinery room floors and buildings under railway overpasses that require vibration prevention.

  Further, the deck concrete fixing member 35 may be a plate that functions as a simple slab regardless of the deck composite slab 12 or a discarded frame, and may be of any type. In addition, it is possible to correspond to the lower full PCa plate with a half PCa plate in which the upper half is cast on site, and to construct a slab that is built on site with a normal formwork. By continuously laying a deck composite slab and placing concrete on the next day, it is possible to complete the floating floor construction and start the form work for the columns and walls of the next floor. Thereby, it is possible to form the floating floor layer at the latest before the interior partitioning work.

It is the schematic which looked at the structure of the floating floor by the floating floor construction method of this Embodiment from the front. FIG. 2 is a plan view (a) of a section in which a plurality of full PCa plates of FIG. 1 are installed and a plan view (b) of a section in which a floating floor layer is disposed on the full PCa plate of FIG. It is a front view which shows the structure of the floating floor in the vicinity of the intermediate beam 2 of FIG. It is a side view which shows the joint part between the full PCa board of FIG. 2, and a full PCa board. It is a top view of Drawing 3 and Drawing 4, and is a figure showing the state where a full PCa board was laid. It is a top view of Drawing 3 and Drawing 4, and is a figure showing the state where the formwork for doorway walls was arranged in Drawing 5. FIG. 7 is a top view of FIGS. 3 and 4, showing a state in which a deck plate with a vibration-proof rubber column in FIG. 6 is laid. It is a top view of Drawing 3 and Drawing 4, and is a figure showing the state where deck concrete stop L shape member was installed in Drawing 7. It is a top view of Drawing 3 and Drawing 4, and is a figure showing the state where concrete was laid in a beam part and a joint part in Drawing 8. It is a top view of Drawing 3 and Drawing 4, and is a figure showing the state where the concrete laid in Drawing 9 was blocked. It is a top view of Drawing 3 and Drawing 4, and is a figure showing the state where concrete was laid on the whole deck plate in Drawing 10. It is the front view (a) which shows the structure of the floating floor in the vicinity of the beam 1 of the outer wall part of FIG. 2, and the figure (b) which shows the state which built the formwork of the next floor.

Explanation of symbols

1, 2 Beams 3 Beams 5 Door boundary walls 10, 10 'One section 11 Full PCa plate 12 Deck composite slab 13 Anti-vibration rubber struts 15 Region 21 Deck plate 21a Mountain part 21b Valley part 22 24 Formwork 30 Joint part 31 Closure plate 32, 36, 37 Concrete 35 Deck concrete stopper 53, 54 Forming of outer wall part

Claims (5)

After the deck plate is disposed above the reinforced concrete slab surface made of a full PCa plate through a plurality of struts having a vibration-proofing effect, a concrete stopper is installed on the outer edge of the deck plate, and then the deck plate A floating floor construction method in which a floating floor is formed by a synthetic slab by placing concrete or mortar on top ,
The deck so that a joint position of the full PCa plate when a plurality of the full PCa plates are installed and a joint position of the composite slab when a plurality of the composite slabs are installed are substantially the same in the vertical direction. Place multiple plates,
Next, concrete is placed at the joint position of the full PCa plate,
Next, after placing a joint plate at the joint position of the synthetic slab, concrete or mortar is placed on the deck plate . The floating floor construction method according to claim 1 , wherein the deck plate to which the plurality of support columns are attached is disposed above the reinforced concrete slab surface. The deck plate has a wave shape with a crest that is convex and a trough that is concave on the top surface,
Floating floor construction method according to claim 1 or 2, wherein the strut is arranged so as to be located in the ridges at the lower surface of the deck plate. At least one of a door wall formwork and an outer wall formwork in a girder is formed by taking it out from the reinforced concrete slab side, and after the floating floor is constructed, the upper frame is constructed by the formwork. floating floor construction method according to any one of 3. A floating floor structure constructed by the floating floor construction method according to any one of claims 1 to 4 .

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