JPH09242089A - Underground outer wall using earth retaining wall - Google Patents

Abstract

PROBLEM TO BE SOLVED: To effectively utilize an earth retaining wall so as to use the area of chamber of building widely by arranging a wide sheet pile in width between steel members driven into the ground at the earth retaining position at a proper interval, and forming a water resistant layer and the like on the surface thereof, thereby providing an underground outer wall. SOLUTION: In constructing a housing with an underground room or building by excavating the ground, H type steel members 1 are driven in the ground at a proper interval, and between the respective steel members 1 one sheet of pile 2 with a wide width is arranged thereby forming an earth retaining wall. Both side eges of the sheet pile 2 is connected to the rear surface of the flange 1a on the front side of the steel member 1. The pile 2 is formed of ALC plate (air foaming concrete plate subjected to autoclave curing), and on the front surface of earth retaining wall in the sheet pile 2, a longitudinal groove 3 and a slantwise groove 3 are formed to guide penetration water downward. 0n the whole surface of the earth retaining wall a water resistant layer 4 or moisture resistant layer is formed to form an underground outer wall. It is thus possible to provide the underground outer wall excellent in water tightness with its structure having no seam in the sheet piles, which can be used as an earth retaining wall.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an outer wall of an underground wall which can be used as a basement wall of a house with a basement or other structures.

[0002]

2. Description of the Related Art When pile-mounting a ground that is prone to collapse, the main piles are driven into the ground at appropriate intervals, and a plurality of steel sheet piles are driven laterally between the main piles by shifting the width of the piles. A mountain retaining wall is created by closing the space between the main piles with sheet piles. Then, in the space created by excavating the front side of the retaining wall, a concrete underground outer wall is constructed, and then the parent piles and sheet piles that make up the retaining wall are extracted and the back side of the underground outer wall is backfilled, The sheet pile will be reused.

[0003]

DISCLOSURE OF THE INVENTION Problems to be Solved by the Invention As in the prior art, the mountain retaining wall is to be removed after constructing an underground outer wall or the like on the front side thereof, and is temporarily installed to construct the underground outer wall or the like. It has no further functionality. Then, this invention makes it possible to effectively utilize the mountain retaining wall by using the mountain retaining wall as the underground outer wall, and further to make it possible to widely utilize the room area of the building by the thickness of the general underground outer wall. And

[0004]

Means for Solving the Problems Underground outer walls utilizing the mountain retaining wall of the present invention which have achieved the above-mentioned object, are long steel members driven into the ground at appropriate intervals at the mountain retaining position, and between the steel members,
A wide sheet of sheet pile is arranged to form a mountain retaining wall, and a waterproof layer and a moisture proof layer are provided on the surface of the mountain retaining wall.
It is characterized in that the mountain retaining wall is constructed as an outer underground wall. By attaching the waterproof layer and the moisture-proof layer to the surface of the sheet pile and the steel material by mechanical means such as bolts and screws, the moisture-proof layer can be reliably fixed even in the presence of seepage water.
By forming a groove on the surface side of the sheet pile constituting the mountain retaining wall to guide the permeated water downward and burying gravel in the upper layer of the ground side of the mountain retaining wall, the water permeated from the gap between the sheet pile and the steel material It can be guided by the ditch and descend, and penetrate into the ground from the gravel in the upper layer of the ground. Instead of providing a waterproof layer or the like on the surface of the mountain retaining wall as described above, a sealing material may be provided at the joint between the steel material and the sheet pile to prevent water leakage. As the sheet pile, an ALC sheet or an extrusion-formed cement sheet can be used.

There are 2 underground outer walls using the above retaining walls.
Form a wide sheet pile provided between the steel materials of the book,
Since the watertightness and moistureproof layer are provided on the surface of the sheet pile or steel material that composes the mountain retaining wall, or the sealing material is provided between both ends of the sheet pile and the steel material to keep the watertightness, the surface side of the mountain retaining wall Water can be prevented from penetrating into the wall and can be used as an underground wall without removing the steel materials and sheet piles that compose the mountain retaining wall.

[0006]

BEST MODE FOR CARRYING OUT THE INVENTION A first embodiment of an underground outer wall using a mountain retaining wall according to the present invention will be described with reference to FIGS. When excavating the ground to construct a dwelling with a basement or a structure, H-shaped steel 1 is driven into the ground at appropriate intervals (for example, at intervals of 2 m), and one sheet pile 2 having a wide width is formed between each H-shaped steel 1. Are installed from above to build a mountain retaining wall. Both side edge portions of the sheet pile 2 are positioned on the back surface of the front flange 1a of the H-section steel 1 and serve as joints. In this embodiment, the H-shaped steel 1 is used as the main pile, but I-shaped steel or other long cross-section steel can be applied. As the sheet pile 2, a sheet having a width several times as large as a normal sheet (a gap width between the two H-section steels) is used, and the joint portions of the mountain retaining wall are formed by the side edges of the wide sheet pile 2 and the H-section steel 1. Watertightness is maintained by being generated only during the period. A watertightness may be improved by sandwiching a sealing material at the joint between the flange 1a of the H-section steel 1 and the sheet pile 2.

The sheet pile 2 is made of an ALC plate (aerated concrete plate made by autoclave curing),
For example, longitudinal and oblique grooves 3 are formed on the surface side of the mountain retaining wall of the sheet pile 2 so that the permeated water is guided downward. In addition, as described above, after the sheet pile 2 is arranged between the H-shaped steels 1 to construct the mountain retaining wall, the waterproof layer 4 or the moisture proof layer is provided on the entire surface of the mountain retaining wall to form on the underground outer wall. To be done. The water leakage on the surface of the sheet pile 2 is prevented from leaking to the surface side of the underground outer wall. The back side of the mountain retaining wall is backfilled with earth and sand. The waterproof layer 4 and the like are formed of a synthetic resin sheet or the like, and the waterproof layer 4 is formed by mechanical means such as screwing nuts into anchor bolts embedded in the sheet pile 2 or H-shaped steel 1 or by using screws or other locking metal fittings. 2 or H-shaped steel 1, and further, in order to keep the watertightness around the bolts and screws, a sealing material is provided around them or a waterproof resin is applied. The waterproof layer 4 can be fixed by using an adhesive having a strong adhesive force. Then, when the waterproof layer 4 and the like are fixed, the opening of the groove 3 is covered with the waterproof layer 4, and the groove 3 becomes a hollow state with a small cross section, which serves as a water channel for permeated water.

In the above, when the sheet piles 2 are arranged between the H-shaped steels 1, the ground is excavated in a state having a space where the sheet piles 2 are arranged. It is preferably applied. Since the ground on the front side of the mountain retaining wall constructed by driving the H-shaped steel 1 and arranging the sheet pile 2 is excavated to construct a structure, the gravel 5 is buried in the upper layer portion of the excavated ground near the mountain retaining wall. Then, a solid foundation 6 of concrete is placed on it. Then, the permeated water which is guided by the groove 3 on the surface of the sheet pile 2 and descends is permeated into the ground through the layer of the gravel 5.

Next, a second embodiment will be described with reference to FIGS. In the mountain retaining wall of this embodiment, the H-section steel 1 is driven into a predetermined ground position at appropriate intervals in the same manner as in the above-mentioned examples, and then the flange 1a of each H-section steel 1 located on the surface side of the mountain retaining wall is formed. Sealing materials 7 each having a U-shaped cross section are attached to both side portions by an adhesive or by sandwiching. In this state, one wide sheet pile 2 is arranged between each H-section steel, and the back side thereof is backfilled with earth and sand to form a mountain retaining wall, which can be used as an underground outer wall. In this state, the sealing material 7 is interposed between the front flange 1a of the H-shaped steel 1 and the joint portion of the sheet pile 2, and the watertightness of that portion can be improved. In this embodiment, since the wide sheet pile 2 formed by extrusion molding cement is used, leakage water is less likely to occur than the ALC sheet, and a sealing material is used at the joint between the sheet pile 2 and the H-section steel 1. 7 is provided, the waterproof layer 4 is not provided as in the above embodiment.

As the seal member 7, a synthetic rubber seal,
A waterproof gasket can be used. Since the watertightness between the H-section steel 1 and the sheet pile 2 is improved by providing the sealing material 7 in this way, the groove 3 for guiding the permeated water in the above-mentioned embodiment is not provided. However, in order to further improve the moisture resistance, the groove 3 may be provided on the surface of the sheet pile 2 or the waterproof layer 4 may be provided as in the above embodiment. In this embodiment, in order to improve the watertightness between the H-section steel 1 and the sheet pile 2, the seal material 7 having a U-shaped cross section is provided between them, but the seal material is not limited to the cross-sectional shape. A state in which the strip-shaped sealing material is adhered to both side edges of the sheet pile 2 or the flange 1a of the H-section steel 1 and the sealing material 7 is sandwiched between both side edges of the sheet pile 2 and the flange 1a of the H-section steel 1. You may Further, in the first embodiment, the ALC plate was used as the sheet pile, and in the second example, the extruded concrete board was used as the sheet pile. However, it is possible to replace the sheet pile materials and use them, and further to prevent rusting on the surface of the steel sheet. It is also possible to apply a plate material provided with layers to the sheet pile.

[0011]

According to the present invention, the sheet pile forming the mountain retaining wall is formed wide so that the space between the two steel members can be closed by one sheet pile, and the sheet pile has no seam, so the underground outer wall having good watertightness. Becomes Therefore, the retaining wall can be effectively used, and the room area of the building can be widely used by the thickness of the general underground outer wall. In addition, the watertightness of the retaining wall can be improved by providing a waterproof layer or moisture-proof layer on the surface side of the sheet pile, or by providing a sealing material at the joint between both side edges of the sheet pile and the steel material, and it can be used as an underground wall. It is possible. Further, the water that has permeated the surface side of the mountain retaining wall can descend downward along the groove provided in the sheet pile and permeate into the ground below the mountain retaining wall to form a moisture-proof underground wall. .

[Brief description of drawings]

FIG. 1 is a perspective view of a mountain retaining wall according to a first embodiment of the present invention.

FIG. 2 is a cross-sectional view showing the lower portion of the mountain retaining wall of FIG.

FIG. 3 is a perspective view showing a mountain retaining wall according to a second embodiment of the present invention.

4 is a cross-sectional view of the mountain retaining wall of FIG.

[Explanation of symbols]

 1 H-shaped steel 2 Sheet pile 3 Groove 4 Waterproof layer 5 Gravel 7 Seal material

Claims (5)

[Claims] 1. A steel material which is long at appropriate intervals is driven into the ground at the mountain retaining position, and a wide sheet pile is arranged between the steel materials to form a mountain retaining wall, and the surface of the mountain retaining wall is waterproofed. Layer and moisture barrier are provided, and the retaining wall is constructed as an underground outer wall. 2. The underground outer wall using the retaining wall according to claim 1, wherein the waterproof layer and the moisture-proof layer are attached to the surface of the sheet pile and the steel material by mechanical means such as bolts and screws. . 3. The underground outer wall using the mountain retaining wall according to claim 1, wherein a groove that guides the permeated water downward is formed on the surface side of the sheet pile constituting the mountain retaining wall. 4. A steel material having a long length is driven into the ground at appropriate intervals at the mountain retaining position, and one sheet pile having a wide width is arranged between the steel materials to form a mountain retaining wall. An underground outer wall using a mountain retaining wall, wherein a waterproof sealing material is provided between the edge and the mountain retaining wall, and the mountain retaining wall is formed as an underground underground wall. 5. The subterranean outer wall using the retaining wall according to claim 1, wherein the sheet pile is formed of an ALC plate or an extruded cement plate.