JPH05272131A - Underground continuous wall constructing method - Google Patents

Abstract

PURPOSE:To efficiently and perfectly fill the space between adjacent steel sheet piles and between both side walls of the steel sheet pile and a trench with an age-hardening material by a simple means. CONSTITUTION:To the width-directional end parts of the flange 2 in a H-shaped steel section 1, numbers of steel male couplings 3 are fixed at intervals in the longitudinal direction of the flange 2 to constitute a male-coupling-fitted steel sheet pile 4. To the width-directional end parts of the flange 6 in a H-shaped steel section 5, steel female couplings 8 consisting of a tubular body with a slit 7 are integrally provided to constitute a female-coupling-fitted steel sheet pile 9. Respective steel piles 4, 9 are built in such a state that the male couplings 3 of the male-coupling-fitted steel sheet pile 4 have been inserted into the female couplings 8 of the female-coupling-fitted steel sheet pile 9, inside the trench 11 of the ground 10; and an age-hardening material 13 is injected and filled into the space between adjacent steel sheet piles and between the steel sheet pile and the trench 11 through tremie tubes 12 that have been inserted between the adjacent steel sheet piles.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for constructing a continuous underground wall such as a retaining wall for an underground structure.

[0002]

2. Description of the Related Art Conventionally, as a method of constructing an underground continuous wall,
As shown in FIG. 9, the ground 10 is filled with the muddy water 17.
A groove hole 11 is formed by drilling, a female joint 18 extending in the longitudinal direction of the flange is fixed to one end of each flange of the H-section steel, and the other end of each flange of the H-section steel is formed in the longitudinal direction of the flange. The steel sheet pile 20 with the joint is formed by fixing the male joint 19 extending to
Is installed in the muddy water in the groove hole 11 with the male joint 19 fitted in the female joint 18, and the male joints 19 extending vertically are fixed to both sides of the partition plate 21 in the width direction, A protection and reaction force member 22 is formed, and each male joint 19 of the protection and reaction force member 22 is inserted into each female joint 18 of the steel sheet pile 20 with a joint at the end, and the partition plate 21 and the slot 1
1 is filled with a granular filler 23 such as gravel between the end and
A partition member 24 is interposed between each female joint 18 and both side walls of the slot 11. Next, as shown in FIG. 10, muddy water between the steel sheet pile 20 with a joint and both side walls of the slot 11 is solidified to form a solidified material layer 25, and then, between the adjacent steel sheet piles 20 with a joint. A method of filling concrete 26 is known.

[0003]

In the case of the above-mentioned conventional underground continuous wall construction method, a solidification material is injected into the muddy water 17 between the steel sheet pile 20 with a joint and both side walls of the slot 11. After the layer 25 is formed, concrete is filled between the adjacent steel sheet piles 20 with joints, so that there is a problem that the construction is complicated and the construction efficiency is poor.

[0004]

In order to advantageously solve the above-mentioned problems, in the method of constructing an underground continuous wall of the present invention,
To the widthwise end of the flange 2 of the H-shaped steel 1, the ends of a large number of steel male joint members 3 are fixed at intervals in the longitudinal direction of the flange to form a steel sheet pile 4 with a male joint. Shaped steel 5
At the end of the flange 6 in the width direction, a female female joint member 8 made of a tubular body having a slit 7 is integrally provided in a state of being arranged so as to extend in the longitudinal direction of the flange, and a steel sheet pile 9 with a female joint is provided. Constructed with a large number of steel sheet piles 4 with a male joint and a plurality of steel sheet piles 9 with a female joint in a slot 11 provided in the ground 10 with a male joint member 3 inserted in a female joint member 8. Then, the time-curable material 13 is injected and filled from the tremie tube 12 inserted between the adjacent steel sheet piles between the adjacent steel sheet piles and between the steel sheet piles and the slot 11.

[0005]

1 to 7 show an embodiment of the present invention, in which a plurality of male T-shaped male joint members having T-shaped cross sections are provided at both ends of each flange 2 in the H-shaped steel 1 in the width direction. 3, the front end of the web 14 is fixed by welding at intervals in the longitudinal direction of the flange to form the steel sheet pile 4 with a male joint, and at both ends of the H-shaped steel 5 in the width direction of each flange 6, A portion of the steel female joint member 8 having a partially cut circular cross section having a slit 7 extending in the pipe axis direction is opposite to the slit 7, and the female joint member 8 is fixed to the flange 6 by welding. A steel sheet pile 9 with a female joint is constructed.

When constructing a continuous underground wall using the steel sheet pile 4 with a male joint and the steel sheet pile 9 with a female joint, as shown in FIG.
As shown in FIG. 2, a large number of steel sheet piles 4 with male joints and a large number of steel sheet piles 9 with female joints are alternately arranged in series in the slot 11 provided in the ground 10, and the male joint member is formed. The flange 15 and the base end side portion of the web 14 in 3 are inserted in the female joint member 8 and built.

Next, a partition plate 16 is interposed between the steel sheet pile and both side walls of the slot 11, and adjacent steel sheet piles 4 with male joints.
And the female jointed steel sheet pile 9 are inserted into the tremie tube 12, and while the time-curable material 13 such as concrete is injected from the tremie tube 12, the tremie tube 12 is pulled out to adjoin the adjacent steel sheet piles 4, 9. The time-curable material 13 is filled in between the steel sheet piles 4, 9 and the slot 11 from between the tip side portions of the webs 14 in the vertically adjacent male joint members 3. Between both side walls of the same and the female joint member 8 is also filled with the time-curable material 13.

Next, the partition plate 16 is removed and relocated, and the tremie tube 12 is inserted at another position. In the same manner as described above, the time-curable material 13 is passed from the tremie tube 12 to the adjacent steel sheet piles 4. , 9 and each steel sheet pile 4, 9 and slot 1
The space between both side walls of No. 1 and the inside of the female joint member 8 are filled, and the same process is repeated thereafter.

In carrying out the present invention, as shown in FIG. 8, at one end portion of each flange 2 in the H-shaped steel 1 in the width direction, the web 14 of the steel male joint member 3 having a large number of T-shaped cross sections is formed. A female female joint member 8 made of a tubular body having a tip portion fixed at intervals in the longitudinal direction of the flange and having a slit 7 at the other widthwise end of each flange 2 in the H-section steel 1, It is also possible to use a steel sheet pile that is fixed and configured so as to extend in the longitudinal direction of the flange.
The male joint may have an arbitrary cross section.

[0010]

According to the present invention, the end portions of a large number of male male joint members 3 are fixed to the widthwise end portions of the flanges 2 of the H-section steel 1 at intervals in the longitudinal direction of the flanges. A steel sheet pile 4 with a male joint is formed, and a female female joint member 8 made of a tubular body having a slit 7 is arranged at the end of the flange 6 in the H-shaped steel 5 so as to extend in the longitudinal direction of the flange. Are integrally provided in a state to form a steel sheet pile 9 with a female joint, and a large number of steel sheet piles 4 with a male joint and a plurality of steel sheet piles 9 with a female joint are formed in a slot 11 provided in the ground 10. The male joint member 3 is inserted into the member 8 and the time-curable material 13 is inserted from the tremie pipe 12 inserted between the adjacent steel sheet piles into the space between the adjacent steel sheet piles and between the steel sheet piles and the slot 11.
Since it is injected and filled between the steel sheet pile 4 with the male joint and the steel sheet pile 9 with the female joint, the time-curable material 13 is simply injected from the tremie pipe 12 inserted between the adjacent steel sheet piles 4, 4. 9 and each steel sheet pile 4, 9 and slot 11
The time-curable material 13 can be completely filled with high efficiency between the both side walls.

[Brief description of drawings]

FIG. 1 is a cross-sectional plan view through a position between male joint members showing a method of constructing an underground continuous wall according to an embodiment of the present invention.

FIG. 2 is a cross-sectional plan view passing through a male joint member showing a method of constructing an underground continuous wall according to an embodiment of the present invention.

FIG. 3 is a perspective view showing a steel sheet pile with a male joint used in an embodiment of the present invention.

FIG. 4 is a cross-sectional plan view of a portion between male joint members showing a steel sheet pile with a male joint used in an embodiment of the present invention.

FIG. 5 is a cross-sectional plan view of a portion of the male joint member showing the steel sheet pile with a male joint used in the embodiment of the present invention.

FIG. 6 is a perspective view showing a steel sheet pile with a female joint used in an embodiment of the present invention.

7 is a cross-sectional plan view of the steel sheet pile with a female joint shown in FIG.

FIG. 8 is a perspective view showing a male joint member and a steel sheet pile with a female joint member that can be used when the present invention is carried out.

FIG. 9 is a cross-sectional plan view showing a state in which a steel sheet pile with a joint is built in muddy water of a slot in a conventional underground continuous wall construction method.

FIG. 10 is a cross-sectional plan view showing a state in which muddy water between a slot and a steel sheet pile with a joint is solidified and concrete is filled in the steel sheet pile with a joint in a conventional underground continuous wall construction method.

[Explanation of symbols]

 1 H-section steel 2 Flange 3 Male joint member 4 Steel sheet pile with male joint 5 H-section steel 6 Flange 7 Slit 8 Female joint member 9 Steel sheet pile with female joint 10 Ground 11 Groove hole 12 Tremy tube 13 Time hardening material 14 Web 15 Flange 16 partition plate

 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor, Hiroshi Miki 2-3-6 Otemachi, Chiyoda-ku, Tokyo Within Nippon Steel Corporation (72) Inventor Hiroshi Furube 2-chome, Kita-Aoyama, Minato-ku, Tokyo No. 8 Intra-company group (72) Inventor Toshio Watanabe 1-2-3 Shibaura, Minato-ku, Tokyo Shimizu Construction Co., Ltd.

Claims (1)

[Claims] 1. A steel sheet pile 4 with a male joint, wherein end portions of a large number of male male joint members 3 are fixed to the widthwise end portion of a flange 2 of an H-shaped steel 1 at intervals in the longitudinal direction of the flange. And a female female joint member 8 made of a tubular body having a slit 7 at the widthwise end of the flange 6 of the H-shaped steel 5,
The steel sheet pile 9 with a female joint is formed integrally with the flange so as to extend in the longitudinal direction of the flange to form a steel sheet pile 9 with a female joint. The steel sheet pile with a joint 9 is built in a state in which the male joint member 3 is inserted in the female joint member 8, and the time-curable material 13 is inserted from the tremie pipe 12 inserted between the adjacent steel sheet piles to the adjacent steel sheet pile. A continuous underground wall construction method of injecting and filling the space between the steel sheet pile and the slot 11.