JPH076233Y2 - Liner plate structure for retaining wall - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION <Industrial Application Field> The disclosed technology is applied to a technical field of a structure of a metal liner plate of an earth retaining wall which holds a vertical shaft such as a tunnel or a manhole in opposition to the earth pressure of the vertical shaft. Belong to

<Summary of summary> Thus, the invention of this application is the inner surface of a vertical shaft such as a tunnel or manhole in order to maintain the shape against the earth pressure from the natural ground of the vertical shaft in a state where the vertical shaft is excavated and formed in the natural ground. The liner plate that is additionally formed as a soil retaining wall has a set number of corrugated rows parallel to each other in the liner plate body of a predetermined unit in a fold shape, and the liner plate body of each unit The connection flanges that are connected by the liner plate body bolts for each unit are integrally formed at both ends in the folding direction and at both ends in the direction intersecting the folds, and are attached along the corrugated row of the liner plate body. The invention relates to a liner plate structure for a retaining wall having a reinforcing ring for linking, and particularly along a connecting flange at both ends intersecting in the folding direction of the liner plate body, or An L-shaped or H-shaped ring-shaped bracket is provided on a metal ring receiving bracket that is provided in parallel with the connecting flange at a predetermined interval and a ring holding bracket that is installed in parallel with the ring receiving bracket.
The invention relates to a liner plate structure for a retaining wall in which a mold or T-shaped reinforcing ring is sandwiched.

<Prior art> As is well known, effective land use is a very important issue in Japan, where the land is small. Therefore, many facilities such as structures are installed on a limited land, not only on the ground but also underground. Even in this case, various technologies to be collectively provided have been developed and put into practical use.

Thus, in constructing such a structure for effective use of land, it may be designed to avoid mutual interference of structures on the ground, but in the ground, for example, when constructing a tunnel, manhole, etc. Drills the shaft, but to prevent collapse of the shaft formed in the ground, in order to keep the shaft against the earth pressure from the ground, a so-called earth retaining wall is formed on the inner wall of the shaft. Is common.

A so-called metal liner plate is widely used for such an earth retaining wall because it has sufficient strength and rigidity as compared with a concrete wall, has a small space occupancy rate, and has high durability.

As shown in FIGS. 5 to 8, the seed liner plate has a plurality of corrugated rows 3, 3 ... Which are parallel to each other, and is formed in a fold shape, and is connected to both ends in the direction of the fold for interconnection. Having flanges 4 and 4, connecting flanges at both ends that intersect in the fold direction
As shown in FIGS. 5 and 6, for example, the units of the liner plate body 6 in which 5, 5 are formed are arranged in a staggered manner, and the connecting flanges 4, 4, ..., 5, 5 ... The liner plate 8 is fastened and connected so as to be attached to the liner plate 8 in parallel with the corrugated row 3 in order to sufficiently resist the earth pressure and to further improve the strength and the rigidity. In general, an H-shaped shaped steel 9 as shown in FIG. 9 is interposed as a reinforcing ring between the connecting flanges 4 and 4 in the fold direction and is fastened with a bolt 7 for reinforcement.

<Problems to be Solved by the Invention> However, in such a liner plate 8, in order to connect the units of each liner plate body 6 via the reinforcing ring 9, as shown in FIG. The back side, that is, the work such as bolt tightening from the inside of the natural ground 1 has to be performed, and there is a drawback that the work in a narrow space is extremely complicated and difficult, and the back surface of the liner plate body 6 There is an inconvenience that the excavation part 10 has to be excavated from the ground 1 on the side and the construction amount is large, and the disposal amount of the residual soil is large and the disposal causes pollution problems. Not only does this increase the number of installations and the number of installations, but it also results in higher costs, but it also has the disadvantage of increasing the number of bolts 7,7 ... tightening and increasing the construction period. It was.

In addition, many liner plate bodies 6, 6 ... need to be installed at the same time, which requires a high degree of skill and has a negative point in that construction management is complicated.

<Purpose of Invention> The purpose of the invention of this application is to solve the problem of the liner plate of the retaining wall, which is indispensable with the vertical shaft construction on the mountain based on the above-mentioned prior art.
Construction can be performed smoothly in response to changes in the ground side, construction on the backside can be done easily, the number of man-hours is small, the amount of residual soil can be reduced, the amount of concrete placed can be kept small, and simultaneous progress is possible. It is intended to provide a liner plate structure for an earth retaining wall, which is excellent in the field of civil engineering construction application in the construction industry by making it possible to remarkably improve workability.

<Means / Action for Solving the Problems> In order to solve the above-mentioned problems, the configuration of the invention of the present application, which has the above-mentioned utility model registration claim as its gist
Excavating and forming vertical shafts such as tunnels and manholes in the ground,
When installing a liner plate for the retaining wall on the inner wall surface, a predetermined number of corrugated rows that are alternately parallel to each other are provided in a fold shape and at both ends in the fold direction and both ends in the direction intersecting the fold. The liner plate body with the connecting flange formed integrally is bolted along both ends of the L-shaped or H-shaped reinforcing ring and the T-shaped reinforcing ring along the corrugated row so that they cross in the fold direction. The ring holding bracket and the ring holding bracket that are integrated with the ring holding bracket sandwich the reinforcing ring to significantly reduce the number of steps for mounting and fastening bolts, etc. The overall number of man-hours is reduced by reducing excess digging, the amount of remaining soil is suppressed, the amount of concrete poured is kept low, the construction period is shortened, and the overall cost can be significantly reduced. Work efficiency is also improved, in which took technical means to be able to also increase considerably the safety.

<Embodiment> An embodiment of the invention of this application will be described below with reference to FIGS.

It should be noted that parts that are the same as those in the drawings starting from FIG. 5 will be described using the same reference numerals.

In the embodiment shown in FIGS. 1 and 2, 8'is a liner plate which is the center of the gist of the invention of this application, and this embodiment is a retaining wall when a vertical shaft for a tunnel is formed in the ground 1. And a rectangular liner plate body 6 of a predetermined size, in which the corrugated rows 3, 3, ... Formed in the longitudinal direction are formed in parallel with each other in a predetermined number in the folding direction. The connecting flanges 4, 4 for alternately connecting and for connecting the L-shaped reinforcing ring 9'are integrally formed at both ends in the fold ring direction, and are similarly formed at both ends in the direction intersecting the fold direction. Connection flanges 5 ', 5'for mutual connection are formed, and holes 13, 13 ... For mounting bolts (not shown) are provided in each of them.

Thus, in the invention of this application, the corrugated row 3 is formed at the connecting flange 5'of the end portion in the direction intersecting with the folding direction.
A ring receiving bracket 11 for supporting the reinforcing ring 9'from below and a ring pressing bracket for pushing in from the upper side while having a similar corrugated shape to the lower side
12 is integrally formed so that the L-shaped reinforcing ring 9 is sandwiched as shown in FIG. 2 so that the mounting strength and rigidity can be reinforced without using bolts.

Therefore, when forming the liner plate 8 ',
The liner plate body 6 is adjacent to the ground 1 on the inner surface of the liner plate 8 ', and the ring receiving bracket 11 and the ring pressing bracket 12 are preliminarily attached to the connecting flanges 5'at both ends in the direction intersecting with the folding direction. All liner plates are fixed by means of bolting or the like, the connecting flanges 5'are connected to each other by fastening the bolts, and the reinforcing ring 9'is sandwiched between the ring receiving bracket 11 and the ring pressing bracket 12. The reinforcement ring 9'can be additionally installed while the main body 6 is being installed in parallel at the same time. Moreover, since it is not necessary to excavate an overditch on the backside ground 1 side of the liner plate main body 6, the man-hours are remarkably increased. Reduced,
Moreover, the construction can be performed with almost no skill required, a large amount of residual soil treatment by excavation is not required, and naturally, the amount of the placed concrete is small, and the construction of the liner plate 8'can be completed safely and smoothly in a short construction period. I can.

Of course, with respect to the earth pressure of the natural ground 1, the liner plate body 6, the connecting flanges 4,5 ', and the reinforcing ring 9'can sufficiently counteract this and maintain the shape retention.

The embodiment shown in FIG. 3 is a mode in which the reinforcing ring 9 ″ is T-shaped, and the ring receiving bracket 11 ′ and the ring pressing bracket 12 ′ are formed in shapes corresponding to these. Also, the embodiment shown in FIG.
Is an H-shaped configuration in which the ring receiving bracket 11 ″ and the ring pressing bracket 12 ″ are formed in a shape that can be appropriately configured, and both are substantially the same as the above-described embodiment. There is nothing.

Needless to say, the embodiment of the invention of this application is not limited to the above-mentioned embodiments, and various embodiments such as providing appropriate reinforcing ribs on the reinforcing ring or the connecting flange can be adopted.

The material of each reinforcing ring may be a design change target such as a metal having a predetermined corrosion resistance and can be appropriately selected by those skilled in the art.

Also, the target shaft is not limited to tunnels and manholes,
It goes without saying that vertical shafts for forming foundation piles can also be targeted.

<Advantages of Device> As described above, according to the device of the present application, basically, a liner plate for a retaining wall made of metal is formed to excavate a vertical shaft such as a tunnel or a manhole formed in the ground to obtain its shape retention. In the same manner as in the conventional mode, a predetermined number of corrugated rows are formed on a rectangular liner plate body of a predetermined size, connecting flanges are provided at both ends in the fold direction, and both ends in the direction intersecting with the fold direction. Not only a liner plate can be formed by forming a connecting flange in the section to sufficiently enhance the strength and rigidity of the liner plate body in a small space to ensure sufficient shape retention by mutual connection, but also the strength of the liner plate. And a stiffening ring made of steel for greater rigidity. Set between the connecting flanges to the liner plate at the end of the liner plate body in the direction intersecting the folding direction. By forming the liner plate and the ring holding bracket integrally so that the reinforcing ring is sandwiched, not only the number of bolts for attaching the reinforcing ring is significantly reduced, but also the back side of the liner plate body is closer to the ground. Since the man-hours for tightening the work can be reduced, the man-hours are remarkably reduced, and there is no need to over-dig the ground behind the liner plate, which can reduce the number of works and reduce the amount of residual soil discharged. The amount of processing can be reduced, there is an advantage that pollution problems can be removed, and since it is not necessary to excavate near the ground behind the liner plate, construction can be done easily and safely. As a result, the cost can be reduced and it is not necessary to have skill.

Further, not only is the liner plate initially attached to the inner surface of the shaft, but also the disassembly such as reassembling due to diversion can be carried out quickly and smoothly with high efficiency.

[Brief description of drawings]

1 to 4 are explanatory views of an embodiment of the invention of this application, FIG. 1 is a partially enlarged perspective view of one embodiment, FIG. 2 is a longitudinal sectional view of the same, and FIG. Vertical column assembly drawing of the embodiment of
FIG. 4 is a partial sectional side view of still another embodiment, FIG. 5 is an overall schematic surface view of a liner plate in a shaft, FIG. 6 is the same sectional view, and FIG. 7 is a front view of a liner plate body. 8
FIG. 9 is a side view of the same, and FIG. 9 is a cross-sectional view of a liner plate based on the prior art, taken together with the ground. 3 ... corrugated line, 4 ... end connecting flange 5 '... end connecting flange liner plate body 8' ... earth retaining wall liner plate 9 '... reinforcing ring, 11 ... ring receiving bracket 12 ... … Ring retainer bracket

 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Hiroaki Aoki 2-1-17 Harigaya, Urawa City, Saitama Prefecture

Claims (5)

[Scope of utility model registration request] 1. A liner plate body having a plurality of corrugated rows parallel to each other in a fold shape, and a connecting flange integrally formed at an end portion in a fold direction and an end portion in a direction intersecting with the fold. In a liner plate structure for a retaining wall, which has a reinforcing ring attached and connected along a corrugated line of the liner plate body, the liner plate structure is provided along a connecting flange of an end portion of the liner plate body that intersects in a folding direction. A liner plate structure for a retaining wall, wherein a reinforcing ring is sandwiched between the ring receiving bracket and the ring pressing bracket provided along with the ring receiving bracket. 2. The liner plate structure for a retaining wall according to claim 1, wherein the reinforcing ring is L-shaped. 3. The liner plate structure for an earth retaining wall according to claim 1, wherein the reinforcing ring is formed in an H shape. 4. The liner plate structure for a retaining wall according to claim 1, wherein the reinforcing ring is formed in a T shape. 5. A utility model registration claim, characterized in that a predetermined number of at least one of the ring receiving bracket and the ring pressing bracket are interposed between end portions intersecting in a fold direction. The liner plate structure for the retaining wall of paragraph.