JP4133373B2 - Continuous wall waterproofing device - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a continuous wall waterproof device, and more particularly to a continuous wall waterproof device in which a core material such as H-shaped steel or I-shaped steel is embedded.
[0002]
[Prior art]
A soil cement column wall or a muddy water solidifying wall (hereinafter referred to as a continuous wall) is constructed as a temporary retaining wall or water-stopping wall, in which H-shaped steel or I-shaped steel is embedded as a core material. The continuous wall is constructed underground before excavating the underground of the structure, and the underground space is constructed by exposing the front end of the core of the continuous wall by subsequent excavation.
[0003]
The core material embedded in the continuous wall is generally buried in the ground after the construction of the underground outer wall, which is the main body structure. However, in recent years, the core material is part of the main body structure. In order to use it effectively, a synthetic wall construction method in which stud bolts are placed on the flange surface of the core material and integrated with the outer wall is used, but because of the stud bolts, a waterproof sheet is attached to the entire surface of the continuous wall. It cannot be waterproofed. Therefore, the waterproofing at the front end portion of the core material of the continuous wall is conventionally performed by the flanges at the front end portions of the adjacent H-shaped steel core materials 2 embedded in the continuous wall 1 as shown in FIGS. The steel sheet 4 was welded between the three, or the waterproof sheet 5 was pasted on the entire front end portion of the core member 2 as shown in FIG.
[0004]
As publicly known examples, Japanese Patent Application Laid-Open Nos. H5-222241, H8-296247, H7-90875, H9-242089, H11-336109, H11-293918. JP-A-11-229413, JP-A-11-50445, JP-A-2001-159146, JP-A-2001-200548, and JP-A-2001-241054.
[0005]
[Problems to be solved by the invention]
However, the conventional waterproofing method has the following problems.
[0006]
(1) In order to prevent water leakage, it is necessary to reliably weld the steel plate to the flange of each core member over the entire length, and it takes time for construction.
[0007]
(2) Since the accuracy of dropping the core material into the soil cement or muddy water cannot be ensured sufficiently, the flange surfaces of the adjacent core materials are not necessarily parallel to each other, resulting in twisting. Therefore, it is difficult to attach and weld the steel plate to the flange of the adjacent core material.
[0008]
(3) Affixing the waterproof sheet to the front surface of the continuous wall also covers the flange surface of the core material without water leakage, which impairs economic efficiency.
[0009]
The present invention eliminates the above-mentioned drawbacks.
[0010]
[Means for Solving the Problems]
The continuous wall waterproofing device of the present invention includes a plurality of core members embedded in the continuous wall and having flanges at least at the front end thereof, receiving portions provided on both sides of the flanges of the respective core members, and core members adjacent to each other. Each of the receiving portions adjacent to each other includes a waterproof plate in which bent portions at both ends thereof are inserted, a side surface of the flange, and an elastic body fitted between the corresponding bent end surfaces of the waterproof plate. Features.
[0012]
The receiving portion is formed of a receiving material, and an end portion of the receiving material is bent, and the bending angle and the bending angle of the waterproof plate are respectively 90 degrees or more.
[0014]
The receiving portion is a C-shaped groove.
[0015]
The elastic body is water expandable.
[0017]
DETAILED DESCRIPTION OF THE INVENTION
Embodiments of the present invention will be described below with reference to the drawings.
[0018]
In the continuous wall waterproofing device of the present invention, as shown in FIG. 1, it extends laterally outward on both sides of the front end side flange 3 of the H-shaped steel core 2 and extends outward at right angles. An L-shaped receiving material 6 bent in the direction is fixed in advance by welding or the like, and receiving portions 7 are formed outside both side portions of the core material 2 of the flange 3, and then the core material 2 is made of soil cement or muddy water. As shown in FIG. 2, the underground wall (dotted line portion) is excavated until the front end portion of the core material 2 embedded in the continuous wall 1 is exposed, as shown in FIG. Further, the bent portions 8 of the waterproof plate 9 such as a steel plate having bent portions 8 at both ends thereof are inserted into the receiving portions 7 of the adjacent core members 2, respectively, and both the front end side flange 3 and the waterproof portion are inserted. Insert an elastic body 10 such as rubber between the bent portion 8 of the plate 9 and stop the water. Mel.
[0019]
If the elastic body 10 is water-expandable, it can be fitted into the portion without containing water, and if water is supplied to the elastic body 10 after that, the waterproof plate 9 is more firmly attached to the flange. 3 can be fixed, and the working time can be shortened.
[0020]
Further, as shown in FIG. 4, the bending angle of the L-shaped portion of the receiving member 6 and the bending angle of the bent portion 8 of the waterproof plate 9 are each 90 degrees or more, and these portions overlap each other to form the waterproof plate 9 It is preferable not to be detached outward from the receiving portion 7. In this embodiment, the waterproof plate 9 is inserted into the receiving portion 7 from above.
[0021]
FIG. 5 shows another embodiment of the waterproof device for continuous walls according to the present invention. In this embodiment, instead of using the waterproof plate 9, the waterproof sheet having a length corresponding to the separation distance between a plurality of adjacent core members 2 is shown. 11, with both ends of the waterproof sheet 11 inserted into the receiving part 7, the elastic body 10 is fitted into the receiving part 7 from the outside of the waterproof sheet 11 to stop the water.
[0022]
As shown in FIG. 6, it is preferable that the bending angle of the L-shaped portion of the receiving member 6 is 90 degrees or more so that the elastic body 10 is not easily detached from the receiving portion 7.
[0023]
Further, if the receiving material 6 does not protrude forward from the surface of the flange 3, the excavator bucket is not caught by the receiving material 6 when excavating until the front end portion of the core material 2 is exposed. In addition, it is possible to easily remove foreign matters and the like adhering to the flange surface with an excavator.
[0024]
FIG. 7 shows still another embodiment of the present invention. In this embodiment, instead of using the L-shaped receiving member 6, U-shapes are provided at both end portions of the front end side flange of the core member 2. A shaped receiving material 12 is fixed, and the receiving portion 7 is constituted by the receiving material 12.
[0025]
In this case as well, as shown in FIG. 8, if the receiving member 12 is not projected forward from the surface of the flange 3, the excavator bucket can be used when excavating until the front end of the core member 2 is exposed. Excavation can be carried out smoothly without being caught, and foreign substances adhering to the flange surface can be easily removed with an excavator.
[0026]
9, instead of the U-shaped receiving material 12, a receiving material 13 made of a C-shaped groove is used, or as shown in FIGS. 10 and 11, the receiving materials 12 and 13 are used. May be made narrow so that the elastic body 10 is not easily detached from the receiving portion 7.
[0027]
Further, as shown in FIGS. 12 and 13, the openings of the receiving members 12 and 13 may be provided at both end portions of the flange so as to face outward of the side surface of the flange 3, respectively.
[0028]
【The invention's effect】
According to the continuous wall waterproof device of the present invention, the accuracy of dropping the core material into the soil cement or muddy water cannot be sufficiently ensured, and even if the core material is twisted, the solidified soil cement or muddy water is sufficient. Even if it is not scraped off and protrudes from the flange surface, a waterproof member such as a steel plate or a waterproof sheet is fixed with an elastic body, so that there is a great advantage that water can be stopped regardless of some installation errors.
[0029]
Further, by installing the waterproof sheet only on the soil cement or the muddy water part, the amount of the waterproof sheet can be reduced, and the waterproof sheet can be fixed even when there is a fixed object on the flange surface.
[0030]
Moreover, since the steel plate can be fixed by fitting the elastic body without welding the steel plate to be a waterproof sheet as in the prior art, the installation work can be shortened.
[0031]
Further, the elastic body can be made more difficult to come off by making the angle of the L-shaped portion of the receiving material and the angle of the bent portions at both ends of the steel material 90 degrees or more, or by narrowing the opening of the receiving portion.
[Brief description of the drawings]
FIG. 1 is a plan view for explaining a waterproof device for a continuous wall according to the present invention.
FIG. 2 is a plan view for explaining the waterproof device for a continuous wall according to the present invention.
FIG. 3 is a plan view for explaining the waterproof device for continuous walls according to the present invention.
FIG. 4 is a plan view for explaining another embodiment of the continuous wall waterproofing device of the present invention.
FIG. 5 is a plan view for explaining another embodiment of the waterproof device for continuous walls according to the present invention.
FIG. 6 is a plan view for explaining another embodiment of the continuous wall waterproofing device of the present invention.
FIG. 7 is a plan view for explaining another embodiment of the continuous wall waterproofing device of the present invention.
FIG. 8 is a plan view for explaining another embodiment of the continuous wall waterproofing device of the present invention.
FIG. 9 is a plan view for explaining still another embodiment of the continuous wall waterproof device of the present invention.
FIG. 10 is a plan view for explaining still another embodiment of the waterproof device for continuous walls according to the present invention.
FIG. 11 is a plan view for explaining another embodiment of the waterproof device for continuous walls according to the present invention.
FIG. 12 is a plan view for explaining another embodiment of the waterproof device for continuous walls according to the present invention.
FIG. 13 is a plan view for explaining still another embodiment of the waterproof device for continuous walls according to the present invention.
FIG. 14 is a plan view of a conventional continuous wall waterproofing device.
FIG. 15 is a perspective view of a conventional continuous wall waterproofing device.
FIG. 16 is a perspective view of another conventional continuous wall waterproofing device.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Continuous wall 2 Core material 3 Flange 4 Steel plate 5 Waterproof sheet 6 L-shaped receiving material 7 Receiving part 8 Bending part 9 Waterproofing board 10 Elastic body 11 Waterproof sheet 12 U-shaped receiving material 13 Receiving material

Claims (4)

  A plurality of core members having flanges at least at the front end thereof embedded in the continuous wall, receiving portions provided on both sides of the flanges of the respective core members, and the receiving portions adjacent to each other of the adjacent core members, respectively. A continuous wall waterproofing device comprising: a waterproof plate into which bent portions at both ends are inserted; a side surface of the flange; and an elastic body fitted between the corresponding bent end surfaces of the waterproof plate. The receiving portion is formed by the receiving member is bent the end of the receiving member, and the bending angle, according to claim 1 placing the bent angle of the waterproof plate is characterized in that at each 90 degrees or more Continuous wall waterproofing device. 3. The continuous wall waterproofing device according to claim 1, wherein the receiving portion is a C-shaped groove. Waterproof device of the continuous wall of claim 1, 2 or 3, wherein the said elastic material is water swellable.

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