JP2019035206A - Underground double wall structure - Google Patents

Abstract

To surely perform processing of preventing water from entering the indoor without installing a conventional weir in an underground double wall.SOLUTION: In a structure of a double wall 2 in which a rail 30 is installed on a floor slab 12 along an outer wall 11 and a lower end of a wall panel 20 is fitted to a panel fitting groove 301 of the rail 30 and an upper end is fixed to an upper floor slab 13, the rail 30 includes a bottom plate portion 31 fixed to the floor slab 12, a front plate portion 33 rising from an inner end of the bottom plate portion 31 and a back plate portion 32 which rises from an outer end of the bottom plate portion 31 and which constitutes a weir higher than the front plate portion 33. Furthermore, a cut-off structure is provided in which a first cut-off seal 41 is provided between the rail 30 and a drainage groove 15, and a second cut-off seal 42 is provided between the bottom plate portion 31 inside the first cut-off seal 41 and the floor slab 12.SELECTED DRAWING: Figure 1

Description

  The present invention relates to a structure of an underground double wall constructed inside an outer wall in a basement floor of a building.

  On the basement floor of the building, a double wall is provided inside the outer wall in contact with the soil to prevent the ingress of groundwater into the interior and the condensation on the indoor wall surface. Conventionally, the underground double wall is generally a wet wall in which concrete blocks having moisture permeability are stacked. However, it takes a lot of time and labor to load a large number of concrete blocks and rebars into a narrow basement floor and stack the blocks accurately while filling the joints with mortar. Due to restrictions, there was a problem in terms of workability. Then, the underground double wall which solves the said fault by a concrete block by using the wall panel which consists of a dry-type material processed beforehand was proposed (patent document 1).

Japanese Patent Laid-Open No. 5-280064

  In the above document, a weir (weir body 5) is provided integrally with the floor slab along the outer wall on the inner side of the outer wall, a drainage groove is provided between the outer wall and the weir, and a panel stands on the weir. The structure of the double underground wall in which the weir is provided in this way is the same in the case of the concrete block. The drainage groove is provided in order to allow groundwater that has passed through the outer wall and moisture condensed on the outer wall to be drained without entering the inside of the double wall. However, it takes time to construct the weir integrally with the floor slab, so there is a problem in workability, and there is a disadvantage that the material cost is excessive and the cost is increased.

  The present invention has been made in view of the above circumstances, and its main purpose is to prevent water from entering indoors reliably without providing a conventional weir and to improve workability and cost. It is to provide an advantageous underground double wall structure.

  The underground double wall structure of the present invention is an underground double wall structure in which a wall panel is erected on the floor slab inside the underground outer wall with a predetermined distance from the outer wall, and the wall panel standing on the floor slab is provided. A rail that forms a drainage groove between the outer wall and the outer wall is installed at an installation position, and a lower end portion of the wall panel is installed on the rail, and an upper end portion of the wall panel is fixed to an upper floor slab. Are a bottom plate portion fixed to the floor slab, a front plate portion rising from an inner end portion of the bottom plate portion, and a spine rising from an outer end portion of the bottom plate portion and constituting a dam higher than the front plate portion. A plate portion, and the inside thereof is formed in a substantially L-shaped cross section that is a panel fitting groove into which the lower end portion of the wall panel is fitted, and is formed between the rail and the drainage groove. 1 water stop seal is provided, in front of the first water stop seal Wherein the second water-stopping seal between the bottom plate and the floor slab is provided. In addition, “inside” and “outside” in the configuration of the rail are such that the outer wall side of the rail is the outer side and the indoor side opposite to the outer wall is the inner side.

  According to the present invention, by installing the rail on the floor slab, the back plate portion of the rail serves as a weir and a drainage groove is formed between the rail and the outer wall. For this reason, it is not necessary to provide a concrete weir integral with the floor slab as in the prior art, and the floor slab can be formed flat. A double wall can be easily constructed by fitting the lower end portion of the wall panel into the panel fitting groove of the rail installed on the floor slab and fixing the upper end portion to the upper floor slab. From these, the workability is improved. In addition, the first and second water stop seals effectively prevent the water in the drainage from entering the inside (indoor side) of the double wall through between the rail and the floor slab.

  In the present invention, a third waterproof seal is provided between the back plate portion of the rail and the back surface of the wall panel, and a fourth seal is provided between the front plate portion of the rail and the front surface of the wall panel. Including a form in which a water-stop seal is provided. According to this embodiment, the intrusion of water into the rail is prevented by the third and fourth waterproof seals, and as a result, rust, corrosion, contamination, etc. of the inside of the rail or the wall panel can be suppressed.

  The present invention includes a form in which a fifth water stop seal is provided between the bottom plate portion inside the second water stop seal and the floor slab. According to this aspect, the effect of preventing water from entering the indoor side from the drainage groove is further improved.

  The present invention includes a form in which a groove portion into which the second water stop seal is fitted is formed in the bottom plate portion of the rail. According to this aspect, the second water stop seal can be positioned on the bottom plate portion of the rail, and the workability is improved.

  The present invention includes a form in which the core member and the rail of the wall panel are made of a material having heat insulating properties and / or nonflammability. According to this embodiment, a double wall having heat insulating properties, nonflammability properties or both properties is constructed.

  Advantageous Effects of Invention According to the present invention, it is possible to reliably perform indoor water intrusion prevention treatment without providing a conventional weir and to provide an underground double wall structure that is advantageous in terms of workability and cost. Play.

It is sectional drawing which shows the structure of the double wall which concerns on one Embodiment of this invention. It is an II arrow directional view of FIG. It is a perspective view which shows the double wall structure of one Embodiment. It is sectional drawing which shows the joining structure of a wall panel. It is sectional drawing which shows another form of a rail and a 1st, 4th water stop seal. It is sectional drawing which shows the form which provided the reinforcing material inside the rail.

Hereinafter, an embodiment of the present invention will be described with reference to the drawings.
1 to 3 show a basement floor in which a basement space (hereinafter, indoors) 1 is formed by a casing 10 constructed in the soil and a double wall 2 inside the casing 10. The housing 10 includes an outer wall 11, a floor slab 12, an upper floor slab 13, and a pillar 14. As shown in FIG. 2, the double wall 2 is configured such that a plurality of wall panels 20 are erected between columns 14 and adjacent wall panels 20 are joined to each other. The double wall 2 is constructed with a predetermined interval (about 150 to 200 mm) between the outer wall 11 and the double wall 2. The wall panel 20 is erected on the flat floor slab 12 via a rail 30 for wall panel installation that is directly installed on the floor slab 12.

[1] Configuration of Wall Panel As shown in FIG. 4, the wall panel 20 is configured by a metal sandwich panel in which a core material 22 is sandwiched between two metal face materials 21. The face material 21 is a metal thin plate, for example, a color steel plate, a fluorine steel plate, a vinyl chloride steel plate, a Galvalume steel plate (registered trademark), a stainless steel plate such as SUS304, or the like. The thickness of the face material 21 is, for example, about 0.27 to 1.2 mm. It is preferable that at least the outer surface of the face material 21 is anti-mold and antibacterial treated by painting.

  As the core material 22, a lightweight resin foam formed into a panel having a certain thickness is used. Among them, a material having heat insulation properties or a material having heat insulation properties and nonflammability is suitable. As the material having heat insulation properties, a foamed resin such as polystyrene resin is used, and preferably a material having high heat insulation properties because it hardly absorbs moisture. Moreover, as a material which has heat insulation and nonflammability, foams such as calcium carbonate and phenol resin, polyurethane foam such as hard polyisocyanurate foam, and the like are suitable.

  This type of core material 22 is bonded to the inner surface of the face material 21 with an appropriate adhesive such as a urethane-based adhesive or an epoxy-based adhesive. The overall dimensions of the wall panel 20 are, for example, a width of about 900 mm, a height of about 1800 to 5000 mm, and a thickness of about 40 to 50 mm. One wall panel 20 having a height ranging from the floor slab 12 to the upper floor slab 13 is used.

  The wall panels 20 are joined to each other by fitting a groove-like recess 221 and a protrusion 222 formed along the longitudinal direction of the core material 22 on the joining end surface. In addition, as the wall panels 20 at both ends adjacent to the pillars 14, those in which the end faces on the pillar 14 side are processed into flat surfaces are used.

[2] Configuration of Rail As shown in FIG. 1, the rail 30 has a flat bottom plate portion 31 fixed to the floor slab 12, and the end of the bottom plate portion 31 on one end side in the width direction (left side in FIG. 1). The back plate portion 32 rises at a right angle from the portion, and the front plate portion 33 rises at a right angle from the end portion on the other end side. The rail 30 has a back plate portion 32 arranged on the outer wall 11 side, a front plate portion 33 arranged on the indoor 1 side, and a bottom plate portion 31 installed on the floor slab 12. The rail 30 is installed along the outer wall 11, and a panel fitting groove 301 that opens upward is formed inside.

  By installing the rail 30, the drainage groove 15 is formed between the rail 30 and the outer wall 11. The back plate portion 32 constitutes a weir for forming the drainage groove 15, and its height is higher than that of the front plate portion 33, and has a height (about 100 to 120 mm) sufficient to constitute the weir. . On the other hand, the height of the front plate portion 33 is set such that the wall panel 20 can be inserted into the panel fitting groove 301, and is set to about 40 mm, for example. The width of the panel fitting groove 301 is set to a size corresponding to the thickness of the wall panel 20, that is, a width slightly larger than the thickness of the wall panel 20.

  The rail 30 is preferably made of a hard resin having heat insulating properties and nonflammability. When the rail 30 is obtained with a hard resin, it can be obtained by extrusion molding. In addition, when obtaining the rail 30 which has heat insulation, hard vinyl chloride is suitable, and when obtaining the rail 30 which has heat insulation and nonflammability, a phenol resin is suitable. The material of the rail 30 is not limited to resin, and for example, a metal one is also used. In the case of metal, for example, one obtained by bending a steel plate or one obtained by extruding aluminum is used.

  A first water stop seal 41 is provided over the entire length of the rail 30 at an outer corner formed by the bottom plate portion 31 and the back plate portion 32 of the rail 30. The first water-stop seal 41 is formed in a band shape by an elastic material such as a resin such as soft vinyl chloride or rubber, and has a cross-sectional shape of a tongue piece that becomes narrower toward the tip, and is thick. One end in the width direction is fixed to the corner. The first water stop seal 41 is inclined so as to extend downward from the portion fixed to the rail 30 toward the outside.

  A second water stop seal 42 is provided between the lower surface of the bottom plate portion 31 of the rail 30 and the floor slab 12. The second water-stop seal 42 is preferably formed of a rubber having elasticity such as synthetic rubber such as IIR (isoptylene / isoprene rubber or butyl rubber), EPM / EPDM (ethylene propylene rubber), or natural rubber in a belt shape. Used. The second water-stop seal 42 has a length corresponding to the entire width of the double wall 2 and is installed on the floor slab 12, and the rail 30 is installed thereon. When the rail 30 is installed, the second water stop seal 42 is crushed and elastically deformed.

  A third water stop seal 43 and a fourth water stop seal 44 are provided over the entire length of the rail 30 at the upper end portions of the back plate portion 32 and the front plate portion 33 of the rail 30, respectively. The third water seal 43 closes the gap between the upper end of the rail 30 and the back surface of the wall panel 20, and the fourth water seal 44 is between the upper end of the rail 30 and the front surface of the wall panel 20. It closes the gap. These water-stop seals 43 and 44 are the same as the first water-stop seal 41, and are formed in a band shape by an elastic material such as a resin such as soft vinyl chloride or rubber, and the cross-sectional shape is directed toward the tip. The tongue is thin. The third and fourth water-stop seals 43 and 44 are tilted inward so that each of the gaps can be closed, and one end in the width direction of the thicker side is fixed to the rail 30. .

  The first, third and fourth water stop seals 41, 43, 44 can be fixed to the rail 30 with an adhesive or the like. In addition, as described above, the rail 30 is made of a hard resin such as hard vinyl chloride, and the first, third and fourth water stop seals 41, 43 and 44 are made of a soft resin such as soft vinyl chloride. In this case, the first, third and fourth water-stop seals 41, 43 and 44 together with the rail 30 can be integrally formed by extrusion molding. Thereby, each water stop seal 41,43,44 is integrally shape | molded with respect to the rail 30, and manufacture is easy.

[3] Construction of Double Wall In order to construct the double wall 2 using the rail 30 and the plurality of wall panels 20, first, the rail 30 is placed on the flat floor slab 12 spaced apart from the outer wall 11 by a predetermined distance. Install at the construction position. The rail 30 is placed in a state in which the back plate portion 32 is arranged on the outer wall 11 side and extends along the outer wall 11. Then, the anchor screw 61 passed through the bottom plate portion 31 and the second water-stop seal 42 is screwed into the floor slab 12 and the bottom plate portion 31 is fastened to the floor slab 12 to be installed on the floor slab 12. By installing the rail 30, the drainage groove 15 is formed between the rail 30 and the outer wall 11. On the other hand, an upper fixing angle 50 having an L-shaped cross section is fixed to the upper floor slab 13 with an anchor screw 62.

  Next, the lower end portion of the wall panel 20 is fitted into the panel fitting groove 301 of the rail 30, and the back surface of the upper end portion is brought into contact with the upper fixed angle 50. Then, the attachment screw 63 is passed through the wall panel 20 from the surface side of the upper end portion of the wall panel 20 and screwed into the upper fixed angle 50, and the upper end portion of the wall panel 20 is fastened to the upper fixed angle 50.

  Subsequently, the wall panel 20 is similarly stood beside the wall panel 20 fixed as described above, the joining end portion is joined as shown in FIG. 4, and the upper end portion is attached to the upper fixing angle 50 with the mounting screw 63. The fixing operation is repeated, and a predetermined number of wall panels 20 are erected between the columns 14. Thereafter, the joint between the bottom plate portion 31 of the rail 30 on the indoor 1 side and the floor slab 12 and the joint between the column 14 and the wall panel 20 are filled with a seal (fifth water-stop seal) 45. In addition, when a clearance gap arises between the upper end surface of the wall panel 20 and the upper floor slab 13, the clearance gap is plugged up by filling the clearance gap with a suitable clearance gap filling material. Thus, the double wall 2 is constructed. In addition, in order to inspect and ventilate the drainage groove 15, it is preferable to provide inspection ports (not shown) in a pair of states with respect to the plurality of wall panels 20 between the two adjacent pillars 14.

[4] Double Wall Structure and Effects The double wall 2 of the present embodiment has a rail 30 for standing the wall panel 20 installed on the floor slab 12, and the back plate portion 32 of the rail 30 is a weir. Thus, the drainage groove 15 is formed between the rail 30 and the outer wall 11. Groundwater that flows through the outer wall 11 flows into the drainage groove 15, and the water is collected by a predetermined drainage structure. The water in the drainage groove 15 is prevented from entering the indoor 1 by the rail 30, the first and second water stop seals 41 and 42, and the sealing 45.

  That is, in a state where the rail 30 is installed on the floor slab 12, the first water stop seal 41 is elastically deformed so that the tip part contacts the bottom part of the drainage groove 15 and warps, and the lower surface of the tip part is the drainage groove. Surface contact with the bottom of 15. The first water stop seal 41 closes and seals the gap between the rail 30 and the drainage groove 15. Further, the second water-stop seal 42 is pressed by the rail 30 to be crushed and elastically deformed, and the entire lower surface is in close contact with the floor slab 12. The gap between the bottom plate portion 31 and the floor slab 12 is closed and sealed by the second water stop seal 42. Further, the gap between the rail 30 and the floor slab 12 on the indoor 1 side is closed and sealed by the sealing 45. As described above, the space between the rail 30 and the floor slab 12 is sealed from the outside to the inside by the triple water stop structure of the first and second water stop seals 41 and 42 and the sealing 45. As a result, the water in the drainage groove 15 is effectively prevented from entering the indoor 1 through between the rail 30 and the floor slab 12.

  Further, as described above, the drain plate 15 is formed between the rail 30 and the outer wall 11 by using the back plate portion 32 of the rail 30 as a weir. Therefore, the concrete weir integrated with the floor slab 12 as in the prior art. The floor slab 12 can be formed flat. Further, the lower end portion of the wall panel 20 is fitted into the panel fitting groove 301 of the rail 30 installed on the floor slab 12, and the upper end portion is fixed to the upper floor slab 13 via the upper fixing angle 50, so that it can be simplified. The double wall 2 can be constructed, and the workability is improved.

  Further, by standing the wall panel 20 on the rail 30, the third water-stop seal 43 and the fourth water-stop seal 44 are warped with the tip portions contacting the back and front surfaces of the wall panel 20, respectively. And is in surface contact with the wall panel 20. As a result, the gap between the upper end of the rail 30 and the wall panel 20 is closed and sealed. The water seals 43 and 44 prevent water from entering the rail 30, and as a result, rust, corrosion, contamination, etc. of the rail 30 or the wall panel 20 are suppressed.

  In addition, although the surface of the outer wall 11 is susceptible to concrete whiteness (eflorescence) due to the influence of moisture such as groundwater leakage and condensation, the surface of the outer wall 11 is not visible from the indoor 1 side by the double wall 2. The white flowers and water stains occurring on the outer wall 11 are not visible, and the aesthetics are maintained. Moreover, the inner wall of the indoor 1 can be comprised by using the wall panel 20 as a finishing material.

  In addition, even if mold or the like is generated on the surface of the outer wall 11, the double wall 2 can suppress the influence of mold directly. Moreover, when the material which has heat insulation is used for the core material 22 and the rail 30 of the wall panel 20, the advantage that it is hard to produce condensation on the wall panel 20 is acquired, and when the material which has nonflammability is used. Nonflammability can be improved. Further, since the wall panel 20 is made of metal and has high durability, the double wall 2 can also have high durability.

[5] Other Embodiments As shown in FIG. 5, a groove 312 extending in the longitudinal direction of the rail 30 is formed by a pair of protrusions 311 on the lower surface of the bottom plate 31 of the rail 30, and a second portion is formed in the groove 312. The water stop seal 42 may be fitted. By fitting the second water stop seal 42 in the groove 312, the second water stop seal 42 can be positioned on the bottom plate portion 31 of the rail 30, and the workability is improved.

  Moreover, the 1st water stop seal | sticker 41 of FIG. 5 is a form different from the 1st water stop seal | sticker 41 shown in FIG. 1, Comprising: It is comprised with the cross-sectional semicircular arc shaped elastic body. In this case, the first water stop seal 41 is elastically deformed and crushed when the rail 30 is installed on the floor slab 12, and is in close contact with the floor slab 12. The water stop seal of such a form can also be applied to the third and fourth water stop seals 43 and 44. FIG. 5 shows a fourth water stop seal 44 </ b> B which is another form of the fourth water stop seal 44. The fourth water-stop seal 44B is separate from the rail 30, and after the wall panel 20 is stood on the rail 30, it is pushed into the gap between them and attached. As shown in the figure, the fourth water-stop seal 44B is generally triangular in cross-section, and has a plurality of upper and lower ridges extending along the longitudinal direction of the fourth water-stop seal 44B and in close contact with the surface of the wall panel 20 in a pressed state. The fixed state is obtained by elastically engaging the rail 30. The first water stop seal 41 and the fourth water stop seal 44B shown in FIG. 5 are made of synthetic resin such as soft vinyl chloride, IIR (isoptylene / isoprene rubber or butyl rubber), EPM / EPDM (ethylene propylene rubber), etc. It is made of rubber having elasticity such as rubber and natural rubber, and these materials are formed in a band shape.

  FIG. 6 shows a configuration in which a reinforcing member 35 is stretched on the inner surface of the rail 30. The lower end portion of the panel 30 is fitted inside the reinforcing member 35 and fastened to the rail 30 by a screw 64 that is screwed through the rail 30, the reinforcing member 35, and the wall panel 20 from the indoor 1 side. A plurality of positions fixed by the screws 64 are set at intervals in the longitudinal direction of the rail 30. In FIG. 6, the screw 64 has a length that penetrates the rail 30 and is exposed to the drainage groove 15 side. However, the length of the screw 64 is the front plate portion 33 with respect to the rail 30. It is sufficient even if it has a length up to the middle of the core material 22 of the wall panel 20.

  The reinforcing member 35 is preferably made of a rigid metal, and for example, a steel plate, stainless steel, or aluminum is used. In the case of a steel plate or stainless steel, it can be obtained by processing into a shape and size in which the outer surface contacts the inner surface of the rail 30 by bending. In the case of aluminum, it can be manufactured by extrusion. The reinforcing member 35 is fixed to the inner surface of the rail 30 by bonding with an adhesive or by being molded integrally with the rail 30. The rail 30 is reinforced by the reinforcing member 35. As a result, the wall panel 20 is supported more firmly and more stably.

  The present invention is applicable to underground double walls.

  DESCRIPTION OF SYMBOLS 1 ... Indoor, 2 ... Double wall, 11 ... Outer wall, 12 ... Floor slab, 13 ... Upper floor slab, 15 ... Drainage groove, 20 ... Wall panel, 21 ... Face material, 22 ... Core material, 30 ... Rail, 301 ... Panel fitting groove, 31 ... Bottom plate part, 312 ... Groove part, 32 ... Back plate part, 33 ... Front plate part, 41 ... First water stop seal, 42 ... Second water stop seal, 43 ... Third Water stop seal, 44 ... 4th water stop seal, 45 ... Sealing (5th water stop seal).

Claims (5)

An underground double wall structure in which a wall panel is erected on the floor slab inside the underground outer wall with a predetermined distance from the outer wall,
At the standing position of the wall panel in the floor slab, a rail is formed that forms a drainage groove with the outer wall,
The lower end of the wall panel is installed on the rail and the upper end of the wall panel is fixed to the upper floor slab,
The rail is
A bottom plate portion fixed to the floor slab, a front plate portion rising from an inner end portion of the bottom plate portion, and a back plate portion rising from an outer end portion of the bottom plate portion and constituting a dam higher than the front plate portion And the inside of the wall panel is formed into a panel fitting groove into which the lower end of the wall panel is fitted.
A first water stop seal is provided between the rail and the drainage groove;
An underground double wall structure, wherein a second water stop seal is provided between the bottom plate portion inside the first water stop seal and the floor slab. A third water seal is provided between the back plate portion of the rail and the back surface of the wall panel;
The underground double-wall structure according to claim 1, wherein a fourth water-stop seal is provided between the front plate portion of the rail and the front surface of the wall panel.   The underground double-walled structure according to claim 1 or 2, wherein a fifth water-stop seal is provided between the bottom plate portion inside the second water-stop seal and the floor slab. .   The underground double-wall structure according to any one of claims 1 to 3, wherein a groove portion into which the second water-stop seal is fitted is formed in the bottom plate portion of the rail.   The underground double wall structure according to any one of claims 1 to 4, wherein the core member and the rail of the wall panel are made of a material having heat insulating properties and / or nonflammability.

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