JP2622035B2 - Earth retaining method and earth retaining material - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an earth retaining method and an earth retaining material used in the method.

[0002]

2. Description of the Related Art In a conventional method of this kind, a lightweight steel sheet pile is erected in a digging groove constructed in the ground, and then the steel sheet pile is pressed into the bottom of the digging groove, and then the bellows and the cutting beam are removed. Installed sequentially.

[0003]

However, when attaching the flared material and the cutting beam, an operator must enter the inside of the digging groove to perform the work, and during the assembly, the digging groove wall is required. There was a danger that workers could be hit by the collapse. The present invention has been proposed in view of the problems of the prior art described above, and the object thereof is to assemble the earth retaining structure from the above-ground portion at the most dangerous time when the excavation groove wall may collapse. Another object of the present invention is to provide a piled sheet pile retaining method capable of working inside an excavation trench after it is in a safe state and a soil retaining material used in the method.

[0004]

According to the earth retaining method of the present invention, in order to attain the above object, a pair of hanging members opposed to a plurality of suspension members suspended from the suspension members are provided. Aside from being detachably supported, an earth retaining material constructed by mounting a cutting girder between the same two uplifting materials is suspended in the excavation groove, and the excavation groove wall and each of the uplifting materials After the steel sheet pile is erected, the steel sheet pile is press-fitted into the bottom of the excavation groove, and then the cutting beam jack is extended to be supported on a cradle pivotally supported at the lower end of the suspension member so as to be able to move up and down. Pressing the pair of uplifting members against the respective steel sheet piles, then releasing the engagement between the respective uplifting members and the suspension members, and removing the suspension members and the suspension members It is.

Further, the earth retaining support material according to the present invention comprises a horizontal suspension member, a suspension member suspended from the front, rear, left and right of the suspension member, and a support pivotally supported on the lower end of each suspension member so as to be able to undulate. Table,
It is composed of a pair of protruding members supported on each of the receiving stands, and a cutting beam jack mounted between the respective protruding members.

[0006]

According to the present invention, the soil retaining material constructed as described above is suspended in the excavation groove, and the suspended material in the soil retaining material is suspended from the suspended member via the suspension member. A steel sheet pile was built in the gap between one pair of uplifting materials and the excavation trench wall,
Each of the steel sheet piles is pressed into the bottom of the excavation groove to drive a steel sheet pile along the wall of the excavation groove, and further, the cutting beam jacks previously mounted between the pair of flared members are operated from the ground part. The earth pressure and the groundwater pressure applied to the excavation groove wall are pressed through the steel sheet pile, the flared material and the cut beam by pressing the cutting beam jack on the steel sheet pile wall through the flared material. With the support, the entire retaining material is in a stable form, and the retaining operation is performed in a safe environment.

[0007] Thereafter, the engagement between the suspension member and the bulging member in the earth retaining material is released, the suspension member and the suspension member are taken out of the excavation groove, and a safe state is established. It is necessary to go inside and perform necessary construction.

[0008]

BRIEF DESCRIPTION OF THE DRAWINGS FIG. A is an earth retaining material, in which a pair of horizontal members 2 is connected between a pair of parallel horizontal members 1 facing each other, and a pair of connecting members 3, 3 are provided between the respective vertical members 2, 2. The members 1, 2, 3 constitute a frame-shaped hanging member.

The connecting member 3 is coupled to a required mounting hole of the group of mounting holes arranged in the horizontal vertical member 2, and is mounted and adjusted at a predetermined position in the longitudinal direction. In the figure, reference numeral 4 denotes a lifting bracket attached to the upper surface of the horizontal vertical member 2. Two pairs of suspending members 5 are suspended between the opposing pair of connecting members 3 and 3 via the upper end stopper 5a of the member 5, and a locking fitting 6 is provided at the lower end of the suspending member 5. A pair of opposed belly members 7 are mounted and supported by the locking fittings 6. The stopper 5a is attached and adjusted to a predetermined position in the transverse direction by being coupled to the long slot 3a provided in the connecting member 3.

[0010] The latch 6 is a cylindrical piece 6a fitted to the lower end of the suspension member 5, and is pivotally connected to the lower end of the piece 6a.
The cylindrical part 6a and the suspension member 5 are fixed by inserting pins through the pin holes arranged in a row, respectively. In addition, cradle 6
b is fixed in a horizontal position by inserting a pin into the pin hole 6b 'and a pin hole 6a' provided at a corresponding portion of the cylindrical piece 6a, so that the locking metal member 6 is attached vertically. The position is adjusted and, at the same time, the belly material 7 is supported (see FIG. 5). By removing this pin, the receiving base 6b is rotated downward to lock the belly material 7. Is released. (See FIG. 6) Further, a horizontal cut-off jack 9 is mounted between the pair of opposed protruding members 7, 7 via a fixture 10.

Then, the ground B is excavated by the backhoe C, and the soil retaining support material A assembled to a width slightly smaller than the groove width is suspended and inserted into the excavation groove D (see FIG. 7).
At this time, the belly 7 is temporarily suspended from the vertical member 2 by a chain (not shown). A steel sheet pile E is erected between the protruding material 7 of the earth retaining material A and the inner wall of the excavation groove D, and the steel sheet pile E is pressed into the steel sheet pile E (see FIG. 9). From the section by the operation of the hydraulic pump F,
The steel sheet pile E is crimped through the protruding material 7 (see FIG. 11).
Thereafter, the pin connecting the receiving table 6b and the cylindrical piece 6a is removed, and the receiving table 6b is rotated as shown in FIG. After that, the earth retaining material A was removed by the crane G and then (Fig. 13).
(See Reference) The pipe H is laid in the trench D and the trench D is backfilled.
(See FIG. 14.) At this time, the chain is detached from the support material, and locked to a steel sheet pile or the like.

[0012]

According to the present invention, the earth retaining material, in which the uplifting material and the cut-out jack are previously assembled on the ground, is suspended in the excavation groove, and the space between the excavation groove wall and the uplifting material is hung. A steel sheet pile is erected and inserted into the steel sheet pile, and the cutting beam is extended from the ground so that the pair of flared materials is pressed against the steel sheet pile to carry out soil retention. Is supported through steel sheet piles, uplifting members, and girder beams to stabilize the entire earth retaining structure, ensure that the earth retaining operation is performed in a safe environment, and that the excavation trench may collapse. When there is a dangerous situation, do not enter the excavation trench and assemble the earth retaining structure from the ground to create a safe state, then enter the excavation trench and suspend the bulging material in the earth retaining material. Release the engagement with the suspension members and work inside the excavation trench, It is intended to ensure a full sexual.

Further, according to the present invention, since the bulging material of the support material and the cut-off jack are previously assembled on the ground and then suspended in the excavation groove, the height of the mountain retaining device is accurately positioned. . The invention of claim 2 is directed to a horizontal suspension member, a suspension member suspended from the front, rear, left and right of the suspension member, a pedestal pivotally supported at the lower end of each suspension member, and on each pedestal. By constructing the earth retaining material from a pair of uplifting materials supported by, and a cut beam jack mounted between each of the uplifting materials,
The above-mentioned sheet pile retaining method can be safely and efficiently performed.

[Brief description of the drawings]

FIG. 1 is a perspective view showing an embodiment of an earth retaining material according to the present invention.

FIG. 2 is a plan view of the earth retaining material.

FIG. 3 is a side view of the earth retaining material.

FIG. 4 is a view taken along the arrow in FIG. 3;

FIG. 5 is a roll view of FIG. 3;

FIG. 6 shows a state in which the engagement between the belly member and the suspension member is released in FIG. 5;

FIG. 7 is a longitudinal sectional view showing an excavation step of one embodiment of the earth retaining method according to the present invention.

FIG. 8 is a vertical cross-sectional view showing a step of inserting a soil retaining material.

FIG. 9 is a vertical cross-sectional view showing a steel sheet pile setting process.

FIG. 10 is a longitudinal sectional view showing a step of press-fitting a steel sheet pile.

FIG. 11 is a cross-sectional side view showing a step of disposing a cutting beam jack.

FIG. 12 is a cross-sectional side view showing a step of releasing engagement between the belly member and the suspension member.

FIG. 13 is a cross-sectional side view showing a removal process of the earth retaining material.

FIG. 14 is a cross-sectional side view showing a pipe laying and backfilling step.

[Explanation of symbols]

 Reference Signs List A soil retaining material B ground D excavation groove E steel sheet pile 1 horizontal horizontal member 2 horizontal vertical member 3 connecting material 4 lifting metal fitting 5 hanging member 6 locking metal fitting 7 belly material 9 cutting beam jack

Claims (2)

(57) [Claims] 1. A pair of suspension members suspended from a suspension member, detachably supporting a pair of opposed protruding members, and mounting a cutting beam jack between the same pair of protruding members. The earth retaining support material is suspended in the excavation groove, a steel sheet pile is erected between the excavation groove wall and each of the bulging materials, and the steel sheet pile is pressed into the excavation groove bottom, and then the The pair of flared members supported on a receiving table pivotally supported at the lower end of a suspension member by extending a cutting beam jack are pressed against the respective steel sheet piles, and then the respective flared jacks are pressed. An earth retaining method, wherein the suspension member is disengaged from the suspension member and the suspension member and the suspension member are removed. 2. A horizontal suspending member, a suspending member suspended from the front, rear, left and right of the suspending member, a pedestal pivotally supported at the lower end of each suspending member, and supported on each pedestal. An earth retaining support material, comprising: a pair of raised materials, and a cut-off jack attached between the raised materials.