JPH08239843A - Waterproofing device in basement - Google Patents

Abstract

PURPOSE: To provide a waterproofing device which is excellent in waterproof against water leakage from joint parts of a base and panels and also can be constructed at low cost in a basement which is formed with the base and an outer peripheral walls structured on it. CONSTITUTION: A waterproofing sheet 27 is set so that it rides across a flange of a channel-shaped base 2 and the upper surface of a base board concrete 1. Also the waterproofing sheet 27 is fitted closely to the base 2 with a retaining fitting 51.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a waterproof device for a basement.

[0002]

2. Description of the Related Art In a basement, it is important to prevent groundwater from leaking into the room. Conventionally, the following methods have been taken as measures against water leakage in the basement.

(1). Leakage from the underground wall and floor is recognized, and the leaked water is drained as a double wall and double floor. (2). Waterproofing only the basement wall and making the others the same as (1). (3). This is called the water barrier bag method, which encloses all the underground structures with a waterproof layer. (Four). Impermeable materials such as steel, resin concrete, and resins that make up floors, walls, and ceilings.

[0004]

In the above-mentioned conventional waterproof construction method, the construction methods (1) and (2) are natural design concepts, but require maintenance of facilities and are not suitable as a house. Although (3) is perfect as a measure against water leakage, it has the drawback of poor workability. Method (4) is a construction method that is excellent in workability and cost, but if the wall or the joint between the wall and the floor is not completely waterproofed, water may leak from that part.

In view of the above, the present invention has a basement and a peripheral wall constructed on the base, and is excellent in waterproofness against leakage of water from the joint between the base and the wall panel. Moreover, the purpose of the present invention is to provide a waterproofing method for a basement that can be constructed at low cost.

[0006]

In order to solve the above-mentioned problems, the present invention is to install a base having a U-shaped cross-section on the foundation slab concrete with its open portion facing inward, In the basement construction method to construct the outer wall of the basement in
It is characterized in that a waterproof sheet is installed across the entire upper surface of the foundation concrete and the upper surface of the lower flange of the base.

In the above, it is possible to install a pressing metal fitting on the upper surface of the waterproof sheet along the lower flange, and to adhere the end of the waterproof sheet to the foundation concrete with this pressing metal. It is possible to interpose a waterproof material between the end faces of the base.

At this time, the waterproof material and the waterproof sheet between the bases are brought into close contact with each other by the pressing fitting.

Further, according to the invention of claim 5, in the case where a plate for joining the bases to each other is attached to the end face of the base, the lower flange of the base is projected toward the room side from the plate, and the waterproof material is provided at this protruding portion. And stick the tarpaulin.

Further, in the above, it is conceivable to interpose a waterproof material between the upper surface of the base and the lower end surface of the wall panel.

[0011]

1 and 3 show a cross section of a basement using the wall panel of the present invention. In the figure, (1) is the slab concrete cast in situ on the underground floor where the ground has been excavated, and (2) is the steel with a roughly U-shaped cross section that is installed on the top surface of this slab concrete (1). It shows the foundation. This base (2) is installed along the outer peripheral wall of the basement with the U-shaped open portion facing inward, and the base (2) is made of steel that constitutes the outer peripheral wall of the base. The wall panel (3) is fixed. At that time, a swelling packing material (5) that absorbs moisture and enhances adhesion is interposed between the lower surface of the wall panel (3) and the upper surface of the upper flange (4) of the base (2). . In addition,
The foundation (2) is installed on the foundation support (13) which was previously installed on the discarded concrete (6), and in this state, the foundation concrete
(1) is placed.

A peripheral beam (7) made of H-shaped steel is installed on the upper surface of the wall panel (3) and fixed to the wall panel (3). Further, an H-shaped steel ceiling beam (8) having a cross section smaller than that of the peripheral beam (7) is passed between the peripheral beams (7), and the ceiling beam (8)
And a steel folding plate material (10) used for roofing material, etc., is installed between the outer beam (7) and a bracket (9) with an L-shaped cross section attached to the side surface of the web. Roof concrete (11) made of concrete is placed. Further, on the upper surface of the roof concrete (11), a heat insulating material (14) made of foamed resin is provided so as to fit under the upper flanges (12) and (12) of the outer perimeter beam (7) and the ceiling beam (8). ) Is attached. Similarly, a heat insulating material (18) is fitted on the outer side of the outer peripheral beam (7).

On the outside of the wall panel (3), the outer peripheral beam (7) is provided.
A protective layer panel (15) is attached from the lower flange of the base material to the outer surface of the base (2) so that the outer surface of the protective layer panel (15) contacts the ground surrounding the basement. . Reference numeral (16) denotes a decorative plate made of a precast concrete plate which is installed so as to cover the above-ground exposed surface of the protective layer panel (15) and the outer surface of the heat insulating material (18).

Reference numeral (19) is a frame of a building on the ground floor placed on the upper surface of the outer perimeter beam (17), and reference numeral (20) is an outer wall panel attached to the outside of the frame (19).

Next, on the upper surface of the foundation concrete (1), a floor concrete (25) is placed in the space surrounded by the steel base (2). A waterproof sheet (27) is laid on the upper surface of (1) so as to extend to the upper surface of the lower flange (5) of the steel base (2).

FIG. 2 shows the structure of the wall panel (3). In the figure, (33) and (34) are a pair of upper and lower horizontal frames made of C channel, and (35) and (35) are a pair of left and right vertical frames which are also made of C channel, and their ends are mutually connected. They are joined to form a frame-shaped steel frame (36). In addition, between the upper and lower horizontal frames (33) (34), a pair of two stud members (37) (37), which are C-channels having a small cross section, are arranged back-to-back, and a space is provided in the horizontal direction. It is installed in advance. These stud materials (37) (37)…
Is a bent steel plate that is joined to one side in the width direction of the frame (36), that is, is biased toward the indoor side as shown in FIG. 3 and is bent outwardly to have a U-shaped cross section. The keystone plate (38) is attached so that the back surface of the keystone plate (38) abuts on the stud material (37) and its periphery fits into the frame (36), and the periphery thereof is surrounded by the horizontal frame (34).
And welded to the inner peripheral surface of the vertical frame (35). (39) is a waterproof surface plate formed by bending a peripheral portion of a stainless steel thin plate in the same direction to form a substantially dish shape, and from the surface side of the keystone plate (38), the frame (36) the folding The curved edge portion (40) is attached so as to be fitted and fixed by welding or the like.

As shown in FIGS. 4 and 5, at the end of the base (2), a web (41) perpendicular to the upper flange (4) of the base (2) is bent inward at a right angle to form the bent portion (42). ) Inside,
Bonding plate for bonding the bases (2) (2) to each other
(43) is stuck. (44) is the bonding plate (4
3) Bolt holes for joining (43) to each other. Further, the lower flange (45) is wider than the joining plate (43) and the upper flange (4), and its edge portion projects toward the interior side, and its longitudinal end portion is bent downward at a right angle. It has been tuned (46). (47) is a sealing material in the shape of a square rod, which is below the indoor edge of the lower flange (5).
Pre-bonded along the longitudinal direction. This seal material (4
7) is embedded in the upper surface of the foundation concrete (1) as shown in FIG. Also, the base (2)
As shown in Fig. 5, the back side of the
(55) is welded.

Reference numeral (49) is a seal material composed of a swellable packing which is interposed between the end faces of the bases (2) and (2) at the joint portion of the bases (2) and (2). The base of the base (2) is formed in such a shape that the lower end of a rectangular shape that pierces the part is projected (48) in one direction and abuts the side surface of the bent end (42) (46). ) (2) is interposed. Reference numeral (50) is a spacer that is inserted into the hollow portion and has a bolt hole through which the joining bolt (51) passes. Then, the foundations (2) and (2) are the foundation slab concrete while interposing the sealing material (47) in the connecting portion as described above.
It is installed on (1), but as mentioned above, the end of the waterproof sheet (27) laid on the foundation concrete (1) is
A pressing metal fitting (52), which is overlapped with the protruding portion of the lower flange (45) and is made of a channel material, is further provided on the upper portion thereof along the edge of the waterproof sheet (27), and the pressing metal fitting (52) is also provided. Of the screw (5
3) is pierced through the waterproof sheet (27) and screwed to the lower flange (45) of the base (2) to be fixed, and the waterproof sheet (27) is brought into close contact with the base (2) by the pressing metal fitting (52). ing. At that time, the upper surface of the end of the sealing material (49) between the bases (2) and (2) located at the protruding portion of the lower flange (45) is also in close contact with the back surface of the waterproof seal (27). Holds a portion of honey.

Then, on the upper surface of the upper flange (4) of the base (2), as described above, the wall panel is provided via the sealing material (5).
(3) is installed. At this time, as shown in FIG. 6, a swelling sealing material (54) is also interposed between the wall panels (3) and (3). The sealing material (54) is the base
(2) A waterproof layer continuous in the vertical direction is formed in close contact with the upper end of the sealing material (49) between (2). Further, as shown in FIG. 3, the bent portion (40) of the waterproof surface plate (39) is in close contact with the lower end of the wall panel (3), and the waterproof layer is also vertically continuous in this portion as well. It will be. The base (2) is made of rust-resistant chrome steel or stainless steel.

[0020]

As described above, according to the present invention, the waterproof sheet is laid on the slab concrete to prevent the infiltration of groundwater that permeates the slab concrete to the floor side, and Since the lower flange of the base that composes the surroundings and the waterproof sheet are placed on top of each other and are in close contact with each other, even if there is groundwater that has entered from between the back of the base and the foundation concrete, this part will also flow to the inside of the room. There is no intrusion. Further, even at the joint between the bases, the sealant between the bases can prevent the intrusion of groundwater, and the waterproof sheet is also in close contact with the sealant between the bases, so that a higher waterproof performance can be obtained. . Further, in the present invention, between the base and the wall panel above it,
Further, since the sealing material is also provided at the connecting portion of the wall panel, there is an effect that the sealing materials are continuous with each other and a structure having high water honey is obtained.

[Brief description of drawings]

FIG. 1 is a vertical sectional view of a main part of a basement showing an embodiment of the present invention.

FIG. 2 is an exploded perspective view of a wall panel.

FIG. 3 is an enlarged cross-sectional view of a main part of FIG.

FIG. 4 is a perspective view of a main part showing a base portion in a vertical section.

FIG. 5 is an exploded perspective view showing a connecting portion of a base.

FIG. 6 is a cross-sectional view of a main part of a joint portion between wall panels.

[Explanation of symbols]

 (1) Foundation concrete (2) Base (3) Wall panel (4) Base upper flange (5) Waterproof sealant (27) Waterproof sheet (45) Base lower flange (47) Waterproof sealant (51) Presser Metal fittings

Claims (6)

[Claims] 1. A basement construction method in which a base having a U-shaped cross section is installed on a foundation slab with its open portion facing inward, and an outer peripheral wall of the basement is constructed on the base. A waterproofing device for a basement, wherein a waterproof sheet is installed over the entire upper surface of concrete and the upper surface of the lower flange of the base. 2. The basement according to claim 1, wherein a pressing metal fitting is installed on the upper surface of the waterproof sheet along the lower flange, and the end of the waterproof sheet is brought into close contact with the lower flange by the pressing metal fitting. Waterproof device. 3. The basement waterproofing apparatus according to claim 2, wherein a waterproof material is interposed between the base end surfaces of the connecting portion of the base. 4. The waterproof device for a basement according to claim 3, wherein the waterproof material and the waterproof sheet between the bases are brought into close contact with each other by the pressing fitting. 5. A plate having a plate for joining the bases attached to an end face of the base, wherein a lower flange of the base is projected toward the room side from the plate, and the waterproof material and the waterproof sheet are closely attached to each other at the projecting portion. Paragraph 4 waterproof device of the basement. 6. The waterproof device for a basement according to claim 1, wherein a waterproof material is interposed between the upper surface of the base and the lower end surface of the wall panel forming the outer peripheral wall.