JPH04153409A - Large sectional underground wall such as connecting wall, coupling wall, adding wall, etc., having high strength with exterior wall surface in neighboring line position or large sectional underground wall such as connecting wall, coupling wall, adding wall, etc. - Google Patents

Abstract

PURPOSE:To make it possible to provide an exterior wall surface over the length of a boundary by constructing a narrow straight line type wall piece after a straight line type underground wall is constructed by an excavation working machine placed in a neighboring line position. CONSTITUTION:An approximate straight-line type excavated hole is excavated by an excavation working machine, cement is poured into the hole, and then, force-fit of a reinforced cage is made to construct an approximate straight line type underground wall piece B. After that, in the same manner, a straight line type underground wall A is constructed. The straight line type underground wall pieces A and B are connected to each other, and a large sectional underground wall C having high strength and providing an exterior wall surface C' is constructed in a neighboring line position D. According to the constitution, a construction having excellent strength can be constructed.

Description

Detailed Description of the Invention "Industrial Application Field" A connection wall with great strength having an outer wall surface at a proximity line position;
Large cross-section underground walls of connecting walls, connecting walls, stacked walls, row walls, etc. (in the present invention, they are referred to as connecting walls, connecting walls, connecting walls, etc.)
(including large-section underground walls at great depths, hereinafter the same shall apply), or connecting walls, connecting walls, attached walls, stacked walls, parallel walls, etc. that have great strength at the construction location (in the present invention, connecting walls, connecting walls, etc. This refers to large-section underground walls (including large-section, large-section underground walls at great depth; hereinafter the same) of walls, joint walls, etc.).

``Conventional technology and its challenges'' Conventionally, working machines for constructing excavated holes with a large width (in the depth direction of the wall, hereinafter the same) used a tooth-shaped grab bucket with three jaw-like bodies. It is possible to drill T-shaped holes, Y-shaped holes, and medium-sized holes by IM (a digging grab bucket has been disclosed (for example, Japanese Patent Publication No. 4.7-10947)).

However, this prior art invention illustrates various forms of the excavated hole, but all of them show examples of use in foundation work for piles of towers and structures, and also show examples of using this for foundation work of piles for towers and structures. It is targeted.

However, as is clear from the name, the present invention applies to large cross-section underground walls (hereinafter simply referred to as large cross-section underground walls) such as connection walls, connection walls, and butt walls that have great strength and have an outer wall surface at the proximity line position. The technical challenge is to improve so-called large-section underground walls.

Further, in the invention of the above-mentioned known document, the l excavation hole for foundation work having this adjacent wall is constructed on a line distant from the boundary.

Therefore, it is considered difficult to construct a large cross-section underground wall with great strength whose outer wall surface is provided at the boundary cup.

That is, assuming that a large cross-section underground wall with high strength is constructed, it is natural that the basement of the structure, underground mall, underground parking lot, etc.
Underground structures such as protective walls and underground tanks (hereinafter simply referred to as underground structures).

) or ground structures such as hills based on underground walls (hereinafter referred to as
It is simply a ground structure. ) etc., the dimensions of the floor surface become smaller so that it will not be distorted.

For this reason, the large cross section is constructed with a somewhat smaller size, resulting in an underground wall with a structure that is somewhat less able to withstand earth pressure loads. For this reason, for example, in large structures or their foundations, this poses a serious problem. Technical issues remain in this respect as well.

Furthermore, if a large cross-section underground wall with high strength is constructed to solve the above problem, the floor area of the above-mentioned underground structure or above-ground structure cannot be expected to be expanded, and each floor of the structure It lacks effective use.

Furthermore, the invention of the above technical document has several problems from a commercial standpoint, such as the structure of the shaped steel or whether or not to erect the shaped steel.
In addition, it is not actually used as a product without lacking technical support for the method of construction, etc., and when constructing large cross-section underground walls with great strength, there is a need for technical support. It seems that there is a lack of

Furthermore, as described in detail above, connecting walls, connection walls, and large cross-section underground walls (hereinafter simply referred to as large cross-section underground walls) such as connection walls, connection walls, and joint walls (hereinafter simply referred to as large cross-section walls) having high strength are installed at the construction location. Currently, construction methods using the spline method have not been implemented in the past.

"Means for Solving the Problems" In view of the above, the present invention aims to further improve the underground walls, and in order to solve the above-mentioned technical problems, the present invention is directed to the boundary-cup (proximity line position). , hereinafter), to construct an underground wall with excellent strength by making it possible to construct a large cross-section underground wall with great strength, on which the outer wall surface is provided. In addition, in order to expand the floor space of underground structures or above-ground structures, etc., and thereby achieve effective use of each floor, the following configuration was adopted.

That is, in the present invention, an excavation work machine having a grinding capacity of 1M in an approximately one-character shape when viewed from above is installed at a proximate line position, and a stabilizing liquid approximately in one-character shape is filled through this excavation work machine. After shaping the excavated hole, and then press-fitting solid materials such as reinforcing bar cages and ready-mixed concrete into this approximately letter-shaped drilled hole, the construction work for one element is completed and the approximately letter-shaped underground is constructed. This almost single-letter-shaped underground wall piece is constructed using a spline method.

Thereafter, approximately one-letter-shaped wall pieces for the gap are sequentially constructed between the almost one-letter-shaped underground wall pieces using the construction method, and the almost one-letter-shaped underground wall pieces for this gap and the almost one-letter-shaped underground wall Connect the pieces.

and a connection having great strength in which the outer wall surface is located at the proximity line position of the structure constructed by linking the substantially single-character-shaped underground wall pieces for each of the gaps and each of the substantially single-character-shaped underground wall pieces, respectively. Large-section underground walls such as walls, connecting walls, and attached walls.

Further, to more effectively construct the large cross-section underground wall,
In order to construct the building using soil cement, the following structure was adopted.

That is, in the present invention, an I-excavation working machine having the ability to excavate an approximately straight-shaped hole in plan view is installed at a proximate line position, and through this excavating work machine, while excavating an approximately straight-shaped excavation hole. By stirring and mixing this excavated earth and sand with cement milk, a soil-cement-like almost straight-shaped underground wall piece material is constructed, and then a reinforcing bar cage is built on this soil-cement-like almost straight-shaped underground wall material. This is a roughly single-letter-shaped underground wall piece that will be constructed after the construction work of the l element is completed, and this roughly single-letter-shaped underground wall piece will be constructed using the spline method.

Thereafter, approximately one-letter-shaped wall pieces for the gap are sequentially constructed between the almost one-letter-shaped underground wall pieces using the construction method, and the almost one-letter-shaped underground wall pieces for this gap and the almost one-letter-shaped underground wall Connect the pieces.

Then, the outer wall surface is located at the proximity line 1◇ of the structure constructed by connecting the approximately single-character-shaped underground wall pieces for each of the above-mentioned gaps and each of the above-mentioned approximately single-character-shaped underground wall pieces, respectively. These are large cross-section underground walls such as connecting walls, connection walls, and attached walls.

Furthermore, in order to construct the large cross-section underground wall using the spline method and in the form of a connection wall, a connecting wall, abutment wall, etc., the following configuration is adopted.

That is, the present invention has the advantage of equipping an excavation machine with an excavation capacity capable of excavating in an approximately straight shape when viewed from above at a construction location. After shaping, solid materials such as reinforcing bar cages and ready-mixed concrete are press-fitted into this approximately letter-shaped excavated hole, and the construction work for one element is completed here, resulting in an approximately letter-shaped underground wall piece being constructed. This approximately single-character-shaped underground wall piece will be constructed using the spline method.

Thereafter, approximately one-letter-shaped wall pieces for the gap are sequentially constructed between the almost one-letter-shaped underground wall pieces using the construction method, and the almost one-letter-shaped underground wall pieces for this gap and the almost one-letter-shaped underground wall Connect the pieces.

and a connecting wall, a connecting wall, and an affixing wall having a structure constructed by connecting each of the substantially single-character-shaped underground wall pieces for each of the gaps and each of the substantially single-character-shaped underground wall pieces, respectively. This is a large cross-section underground wall.

"Operation" Next, the operation (construction procedure) of the present invention will be explained with reference to the schematic diagram of the construction procedure in FIG.

First, in construction methods that use clamshell bucket-type, packet-type excavation machines such as Kelly's Maebashi, horizontal cutter IM cutting machines, vertical force / center excavation machines, etc., the proximity line An excavation work machine comprising two excavation buckets arranged substantially opposite each other, or the horizontal cutter excavation work machine, or the vertical cutter excavation work machine (hereinafter, in this example, one excavation work machine equipped with a chipping packet). (This will be explained with a machine.) While excavating a hole that is almost a straight line shape when viewed from above, a
Stabilizing liquid is injected from a stabilizing liquid tank (not shown).

When excavation is carried out to a predetermined position through the above-mentioned excavation and earth removal, injection of stabilizing liquid, and turning of a part of the stabilizing liquid to the above-mentioned stabilizing liquid filtration tank, an IM hole with a shape of approximately - is formed here.

Then, solid materials such as a substantially single-letter reinforcing bar cage and ready-mixed concrete (hereinafter simply referred to as "substantially one-letter-shaped reinforcing bar cage and ready-mixed concrete") are press-fitted into this substantially single-letter-shaped excavated hole.

Through this substantially single-character-shaped reinforcing bar cage and the press-fitting of solid material, an approximately single-character-shaped underground wall piece of the element is constructed (the state shown in Fig. 5A).

Next, regarding the construction work of the next element, first of all, the width of the approximately one-letter-shaped underground wall piece of the above-mentioned element (in the left and right direction as viewed from the drawing in Fig. 5, hereinafter) and the approximately The construction work will be carried out in the same manner as mentioned above, leaving an unbuilt part of the same width.

That is, through the excavating work machine, a stabilizing liquid is injected from the stabilizing liquid tank into the excavated area while forming an excavated hole that is approximately in the shape of a single letter when viewed from above at the above-mentioned proximity line position.

After cutting and removing the soil, injecting a stabilizing liquid, and turning a part of it into the stabilizing R111 overtank, I excavate to a predetermined position, and an approximately single-letter-shaped I excavation hole is formed here. It will be done.

Therefore, next, a substantially straight-shaped reinforcing bar cage and ready-mixed concrete are press-fitted into this roughly straight-shaped excavated hole.

Through the press-fitting of this nearly single-character shaped reinforcing bar cage or shaped steel (hereinafter referred to simply as the almost single-character shaped reinforcing bar cage) and fresh concrete, the next almost single-character shaped underground wall piece of the next single element is created here. It is constructed (state of mouth in Figure 5).

After that, by repeating the same construction work as described above using the spline method, each approximately single-letter-shaped underground wall piece and each unconstructed part are constructed alternately at the construction location (Fig. 5, H). condition).

Thereafter, while excavating an approximately linear-shaped excavation hole in plan view at the proximity line position in one element of the unconstructed part via the excavation work machine, a stabilizing liquid is poured into this excavated part from the stabilizing liquid tank. inject. In the case of this excavation, the excavation work machine was advanced using the existing almost one-character-shaped underground wall piece as a kite.
The structure is such that a nearly single-letter-shaped single-bend opening is reliably created in the vertical direction.

When excavating to a predetermined position through the above-mentioned excavation and earth removal, injection of stabilizing liquid, and return of a part of it to the above-mentioned stabilizing liquid filtration tank, an approximately straight-shaped excavated hole for the gap is formed. It will be done.

Therefore, a solid material such as a substantially single-character shaped reinforcing bar cage and ready-mixed concrete (hereinafter simply referred to as "virtually single-character shaped reinforcing bar cage and ready-mixed concrete 1.") was placed in the approximately single-character-shaped excavated hole for this gap. Press in.

A nearly straight-shaped underground wall piece for a one-element gap is constructed through this roughly straight-shaped reinforcing bar cage and press-fitting of fresh concrete, and on both sides of the roughly straight-shaped underground wall piece that has already been constructed. are linked.

Therefore, the construction work for the next element was carried out, and the work for this one element was completed through the same construction work as described above for this unconstructed part, and an approximately one-character-shaped underground wall piece for the gap was constructed. , and on both sides of it, the almost single-character-shaped underground wall pieces that have already been constructed are connected (state of the 5th National Government).
.

As mentioned above, by performing construction work on each unbuilt part, the almost one-letter-shaped underground wall pieces for the gap and the one-letter-shaped underground wall pieces are connected, and finally, a continuous structure with great strength is achieved. A large underground wall with a large cross section is constructed (Fig. 5 Horn condition)
In addition, in the construction method using a multi-axis I excavation work machine, a three-axis excavation stirring ocher (in the present invention, it is not limited to three axes) is provided at the proximity line position in an approximately - letter shape.
Cement milk is injected from a cement milk tank (not shown) while excavating an approximately linear-shaped excavation hole in plan view using an excavation machine equipped with the excavation work machine, and the excavated soil and cement milk are stirred and mixed.

When excavating to a predetermined location through the above-mentioned excavation and stirring and mixing with cement milk, a soil-cement-like, approximately straight-shaped underground wall piece material is constructed here.

Therefore, next, reinforcing members of approximately one-letter-shaped reinforcing bar cages are erected into this soil-cement-like, almost one-letter-shaped underground wall piece material.

One element of an almost single-character-shaped underground wall piece is constructed through the construction of the almost single-character-shaped reinforcing bar cage (B) (the state shown in Figure 5 A).

Next, regarding the construction work of the next element, first of all, the width of the approximately one-letter-shaped underground wall piece of the above-mentioned one element (in the left and right direction as viewed from the drawing in Fig. 5, hereinafter the same) and approximately Leaving an unbuilt part of the same width, the next part was constructed in the same way as above.

That is, while excavating an approximately linear-shaped excavation hole in plan view using the excavation work machine, cement milk is injected from the cement milk tank, and the excavated soil and cement milk are stirred and mixed.

When excavating to a predetermined position through the above-mentioned excavation and stirring and mixing with cement milk, a soil-cement-like, approximately straight-shaped underground wall piece material is constructed here.

Therefore, next, a nearly single-character shaped reinforcing bar cage was erected on this soil-cement-like approximately single-character shaped underground wall piece material.

Through the press-fitting of this approximately single-character-shaped reinforcing bar cage, the next approximately single-character-shaped underground wall piece of one element is constructed here (
Figure 5: State of the mouth).

After that, by repeating the same construction work as described above using the spline method, each approximately one-letter-shaped underground wall piece and each unconstructed part are constructed alternately at the construction location (see the fifth section). situation).

After that, cement milk is injected from the cement milk tank into one element of the unconstructed part while drilling an approximately single-letter-shaped excavation hole for the gap in plan view at the proximity line position using the excavation work machine. Then, stir and mix the sand and cement milk.

When excavated to a predetermined location through the above-described fine cutting and stirring and mixing with cement milk, a soil-cement-like, approximately straight-shaped underground wall piece material for a gap is constructed.

Therefore, next, a reinforcing member for a substantially straight-line reinforcing bar cage is press-fitted into this soil-cement-like, roughly straight-shaped underground wall piece material for the gap.

Through the construction of this almost straight-shaped reinforcing steel cage, a nearly straight-shaped underground wall piece for the gap of one element is constructed, and on both sides of it, almost straight-shaped underground wall pieces that have already been constructed are constructed. are linked.

Therefore, the construction work of the next element is carried out, and this unbuilt part ζ is also constructed through the same construction work as described above.
After the element work is completed, a nearly single-character-shaped underground wall piece for the gap is constructed, and on both sides, the already constructed almost single-character-shaped underground wall pieces are connected (state of the 5th national government). .

As described above, by carrying out construction work on each unbuilt part, the almost single-character-shaped underground wall pieces and the almost single-character-shaped underground wall pieces for the gap are connected, and finally have a continuous and large strength. A large cross-section underground wall is constructed (Fig. 5 Horn condition)
It should be noted that instead of the substantially straight-shaped reinforcing bar cage, it is also possible to use a straight-shaped steel bar with a bow or other drawn copper-silver or the like.

In addition, Figure 6 ■ and ■ show an example of constructing a large cross-section underground wall by providing the above-mentioned almost single-character-shaped underground wall pieces and the almost single-character-shaped underground wall pieces for gaps in a key shape or a single ■ shape. FIG.

Furthermore, FIG.
An example of constructing a large cross-section underground wall is shown below.

In addition, a large cross-section underground wall with the structure shown in FIG.

``Example'' An excavating machine used for constructing a large cross-section underground wall with high strength according to the present invention will be explained below.

The excavation work machine shown in Figs. 1 and 2 is a multi-axis excavation work machine used for constructing a soil-cement-like almost straight-shaped underground wall piece through stirring and mixing of cement milk and excavated soil. 1 is the main body of the driving device, 2.3 is a steady rest, 4 is a large number of stirring fronts 5 (sometimes also serving as stirring blades, hereinafter referred to as "intervals"), and an excavating stirring device with a cutting edge 6 at the tip. In this example, the excavating and stirring augers 4 are provided in three rows in the horizontal direction as shown in FIG. (The three rows are as explained above.) When viewed from above, they are arranged almost in the shape of a single letter.

20- Therefore, by driving this excavation work machine,
An approximately single-letter-shaped excavation hole was excavated, and at the excavation site where the almost single-letter-shaped IM excavation was performed, there was a soil-cement-like approximately single-letter-shaped underground wall piece formed by stirring and mixing the excavated soil and cement milk. The material is constructed.

This soil-cement-like almost single-letter-shaped underground wall piece material,
For example, by press-fitting a nearly single-character shaped reinforcing cage,
A substantially single-character-shaped underground wall piece A or a substantially single-character-shaped underground wall piece B for a gap is constructed.

Although not shown in the drawings, the excavating and stirring auger 4 is provided with an opening at an appropriate location for spouting cement milk, hentonite, and the like.

In the figure, 7 is the crane, 8 is the top sheave, and 9 is the leader.

In the construction method using the above-mentioned multi-axis excavation work machine, a three-shaft (I excavation work machine equipped with an excavation stirring auger 4 While excavating an approximately straight-shaped excavation hole in plan view, cement milk is injected from the cement milk tank 40, and the excavated soil and cement milk are stirred and mixed.

When a predetermined position is excavated through the above-mentioned excavation and stirring and mixing with cement milk, a soil-cement-like approximately one-letter-shaped underground wall piece material is formed here.

Then, by erecting, for example, a substantially letter-shaped reinforcing bar cage into this soil-cement-like substantially single-letter-shaped underground wall piece material, a substantially single-letter-shaped underground wall piece A is constructed.

First, this one-letter-shaped underground wall piece A is constructed using the spline method. A substantially single-character-shaped underground wall piece B for a gap is constructed between the approximately single-character-shaped underground wall pieces A by using the multi-axis excavation machine and performing substantially the same operation.

As a result, the substantially single-character-shaped underground wall piece A and the almost single-character-shaped underground wall piece B for the gap have a stepped outer wall surface C'' at the proximity line position or the construction site, resulting in great strength. A large cross-section underground wall C is constructed.

On the other hand, the excavation work machine not shown in Figures 3 and 4 uses a packet type 1 excavation work machine such as a clamshell packet type or a Kelly excavator to drill holes almost opposite each other at the underground wall construction site. This excavated hole is filled with a stabilizing liquid, and while the stabilizing liquid is removed, a solid material such as ready-mixed concrete or a nearly single-shaped reinforcing bar cage is press-fitted into the hole, and the hole is filled with a stabilizing liquid.
This is a mechanical device used to construct character-shaped underground wall pieces or almost single-character-shaped underground wall pieces for gaps.

Specifically, in order to excavate an approximately single-letter-shaped I excavation hole or an approximately single-letter-shaped excavated hole for a gap (hereinafter simply referred to as an approximately single-letter-shaped excavated hole), for example, a hanging lobe 1 is used.
1, a sleeve 14 slidably provided on a mounting rod 13 hanging from the adjustable guide 12, and the mounting rod 13.
A pair of excavation packets 15, 15 (
Hereinafter, it will be referred to as 15. ), and a link 16, 1G (hereinafter referred to as 1G) provided between this excavation packet 15 and the sleeve 14.

The excavation buckets 15 are arranged in a single-letter shape when viewed from above.

In addition, in this excavating work machine, for example, when the sleeve 13 locked to the lobe 11 is pulled up by winding up the lobe 11, the non-knobs 16 are pulled up. As a result, each excavation bucket 15 is opened in the radial direction.

Therefore, the lobe 11 is let out and the S-cutting bucket 15 is dropped by its own weight, and its excavating claws 17 are dug into the ground of the excavation target (preceding polling may be provided).
.

Then, the lobe 11 is wound up, the link 16 is pushed down, and the excavation bucket 15 sequentially swings in the closing direction.

As a result, the excavating claws 17 that have bitten into the ground excavate the underground and store the excavated earth and sand in the excavating bucket 15.

Thereafter, by pulling up the lobe 11 via a heavy machine (not shown), the excavated earth and sand of the blocked excavation packet 15 is removed from a location where it does not interfere with construction or 111!
Eliminated by A tank etc.

Therefore, by driving this excavation work machine,
An excavation hole approximately in the shape of a single letter in plan view or a moat I\jl hole in the shape of a single letter in plan view will be excavated underground at the construction site, and a stabilizing liquid tank (not shown) will be installed in this excavated area. More stabilizing fluid is injected.

Then, for example, a substantially straight-shaped reinforcing bar cage and a solid material such as ready-mixed concrete are press-fitted into the roughly straight-shaped excavated hole filled with the stabilizing liquid or the roughly straight-shaped bored hole for the gap.

By press-fitting these approximately one-letter-shaped reinforcing bars and solid materials such as ready-mixed concrete, and removing the stabilizing liquid, an approximately one-letter-shaped underground wall piece A or an approximately one-letter-shaped underground wall piece for a gap is constructed. Wall piece B is constructed.

After constructing this almost single-letter-shaped underground wall piece A or the almost single-letter-shaped underground wall piece B for the gap by the spline method, each almost single-letter-shaped underground wall piece A or the almost single-letter-shaped underground wall for each gap is constructed using the spline method. By connecting the pieces B, a large cross-section underground wall with great strength is constructed.

In addition, the excavation work machine for constructing the above-mentioned almost single-character type underground wall piece A or the almost single-character type underground wall piece B for interstice may be replaced by other excavation work machines shown in Figs. 8 and 9. obtain.

First, there is a vertical cutter excavating machine shown in FIG.

Specifically, a rotary cutter excavator is ideal;
The outline thereof is a pair of rotary cutters having a casing 20, a slide cutter 21 provided on the casing 20 so as to be able to move up and down, and a plurality of claw pieces 22a below the slide cutter 21, which are rotationally driven by a drive device (not shown). 22, and between this rotary cutter 22, there is an earth and sand discharge pipe 23 having a slightly upward lower end, and an almost box-shaped earth and sand having a discharge pipe 24. This excavated earth and sand is guided to the earth discharge pipe 23 through the nozzle 25 of the discharge pipe 24, and is discharged to the ground through this discharge pipe 23, and at the same time, a stable liquid is supplied to the excavated hole, for example, through a forced circulation system. This is a machine designed to both pump and replenish.

Further, the rotary cutter 22 rotates at a constant speed in opposite directions, cancels out the excavation torque generated on both sides, maintains a balance of force, and smoothly moves the rotary cutter 22 in the vertical direction. Enables digging.

This vertical cutter excavating machine is suspended from a boom (not shown) of heavy equipment (not shown) via a robe or chain (not shown).

Similarly, there is a horizontal cutter excavating machine shown in FIG.

Specifically, the revolution bending front bridge is ideal, and its outline is as follows:
1, a gear fixed to the output shaft of this motor 31, a double pipe 32 having a cooperating gear, a mud removal hose 33 communicating above the double pipe 32, and a mud removal hose 33 connected to the double pipe 32. Several rotary shafts (not shown) that are horizontally driven to rotate by a gear (not shown) and a planetary gear mechanism provided, and a large number of drill bits 3 that can rotate and revolve around the axis provided at the lower end of the shaft.
4, a stabilizing liquid discharge nozzle (not shown) provided in the double pipe 32, and a structure for discharging excavated soil and muddy water from inside the double pipe 32. In the figure, 35 is a main body casing. Both sides of 30 (in the drawing of Figure 9, the back side or the front side)
→ Noid cutter installed at the bottom.

This excavation work machine is suspended from a boom (not shown) of heavy equipment (not shown) via a rope or chain (not shown), and is driven by the rotation of a motor 31 and a gear transmission mechanism. The drill bit 34 is used to excavate earth and sand, and the excavated earth and sand are discharged into an above-ground sludge treatment tank through the inner cylinder of the double pipe 32 along with muddy water containing a stabilizing liquid and slime.

In addition, each trill bit 34 rotates in the opposite direction to offset the spacing reaction force, thereby making it possible to reliably excavate in the vertical direction.

Although not specifically explained or illustrated, the use of materials such as tremie pipes and locking pipes is similarly interpreted in the construction method or wall construction of the present invention. Furthermore, various methods and devices are conceivable for connecting each wall.

"Effects of the Invention" Since the present invention has the configuration described in detail in section 2 below, it has the following effects.

(1) First, the present invention deploys an excavation work machine at a close line position, forms a leak hole filled with stabilizing liquid in the shape of an approximately single character through this excavation work machine, and then forms a leakage hole filled with a reinforcing bar cage and a raw material. Solid materials such as concrete are press-fitted to construct approximately one-character-shaped underground wall pieces using the spline method.

Thereafter, approximately one-letter-shaped wall pieces for the gaps are sequentially constructed between the approximately one-letter-shaped underground wall pieces using the above-mentioned construction method, and these approximately one-letter-shaped underground wall pieces for each gap and each of the above-mentioned approximately one-letter-shaped underground wall pieces are successively constructed for the gaps. It is a large cross-section underground wall such as a connecting wall, connecting wall, or abutment wall that has great strength and has an outer wall surface at a proximate line position of a structure constructed by connecting inner wall pieces.

Therefore, the effect of making it possible to construct a large cross-section underground wall with high strength, whose outer wall surface is provided at the boundary cup, and this large cross-section underground wall with high strength,
It is a structure with excellent strength.

In addition, the floor area of underground structures or above-ground structures can be expanded, thereby making it possible to effectively utilize each floor.

(2) In addition, the present invention provides an excavating work machine disposed at a proximate line position, and while excavating an approximately straight-shaped bent hole through this excavating work machine, the excavated earth and sand and cement milk are stirred and combined. First, we will construct a roughly straight-shaped underground wall piece material that is similar to soil cement, and then we will erect a reinforcing bar cage and construct a single-shaped underground wall piece using the spline method.

Thereafter, approximately one-letter-shaped wall pieces for the gaps are sequentially constructed between the approximately one-letter-shaped underground wall pieces using the above-mentioned construction method, and these approximately one-letter-shaped underground wall pieces for each gap and each of the above-mentioned approximately one-letter-shaped underground wall pieces are successively constructed for the gaps. It is a large cross-section underground wall such as a connecting wall, connecting wall, or abutment wall that has great strength and has an outer wall surface at a proximate line position of a structure constructed by connecting inner wall pieces.

Therefore, it is possible to use soil cement to construct a large cross-section underground wall with a large strength, and the outer wall surface of the boundary cup is provided with a large cross-section underground wall, and the soil cement has the advantage of having a large strength. Large-section underground walls are structures with excellent strength.

Further, as described above, by expanding the floor area of underground structures or above-ground structures, etc., there is an effect that effective use of each floor can be achieved.

(3) Furthermore, the present invention disposes the excavation work machine at a construction position, forms an excavation hole filled with stabilizing liquid in the shape of a substantially straight line through the excavation work machine, and creates a row of reinforcing bar cages. Solid materials such as concrete are press-fitted to construct approximately one-character-shaped underground wall pieces using the spline method.

Thereafter, approximately one-letter-shaped wall pieces for the gaps are sequentially constructed between the approximately one-letter-shaped underground wall pieces using the above-mentioned construction method, and these approximately one-letter-shaped underground wall pieces for each gap and each of the above-mentioned approximately one-letter-shaped underground wall pieces are successively constructed for the gaps. These are large cross-section underground walls such as connection walls, connection walls, and buttress walls that have a high strength structure and are constructed by connecting inner wall pieces.

Therefore, there is an effect that this type of large cross-section underground wall can be reliably constructed by the spline method and in the form of a connecting wall, a connecting wall, a butt wall, etc.

This large-section underground wall also has a structure with excellent strength.

(4) Furthermore, the present invention is a structure in which a substantially straight-shaped reinforcing bar cage is erected.

Therefore, a large cross-section underground wall having high strength can sufficiently cope with earth pressure loads, and can improve the strength against wall loads of above-ground structures.

[Brief explanation of the drawing]

The drawing shows an embodiment of an excavating machine used for constructing a large cross-section underground wall with high strength according to the present invention. 1 and 2 show a multi-axis excavating machine, with FIG. 1 being a front view and FIG. 2 being an end view viewed from above. Figures 3 and 4 show a bucket I-type excavation machine, with Figure 3 being a front view with the excavation bucket open, and Figure 4 being a front view with the excavation bucket closed. It is. 5A to 5A are scaled schematic diagrams showing the construction procedure. Furthermore, FIGS. 6 (1) and (2) to 7 (7) are schematic diagrams showing large cross-section underground walls constructed using other construction methods, respectively. Furthermore, FIG. 8 is a partially cutaway front view showing an example of a vertical cutter (excavation work machine), and FIG. 9 is a front view showing an example of a horizontal cutter (excavation work machine). 1: Drive unit main body 2.3: Steady rest 4; Drilling stirring auger 5: Stirring peg 6: Drilling cutter 7: Crane 8 Nidotsubu sheave 9: Leader 11; Lobe 12: Adjustable chi!・ 13: Mounting rod] 4: Sleeve 15, 15: (Drilling Buckets 16, 16: Link 17: I! Claw 20: Casing 21: Slide cutter 22: Rotary cutter 22a: Claw piece 23: Discharge pipe 24: Discharge pipe 25: Nozzle 30: Main body casing 31: Motor 32: Double pipe aa: tJ muddy water hose 4 nitrile bit 35: Sight cutter A: Almost single-character type underground wall piece B; Almost single-character type underground wall piece C for gap: Large cross-section underground wall with great strength C'I External wall surface D: Proximity Line Position Patent Applicant: Masami Nimura, Patent Attorney: Takenaka - Sen 1, Case Description 1990 Patent Application No. 252854 2, Title of Invention: Strength of External Wall Surface Located at Proximity Line Position connection t with
:,? , Large cross-section underground walls such as connecting walls, attached walls, etc., or large cross-section underground walls such as connecting walls, connecting walls, attaching walls, etc. with great strength 3. Relationship with the case of the person making the amendment Patent applicant address 1-225 Hetsuki, Nakamura-ku, Nagoya fH Jiji Name 2
Masami Mura 4, Agent (T address Uba i-+h Narumi-cho, Midori-ku, Nagoya I 0
No. 5; 3 Habilion Bunker A-4 (No. 11 Name (8:3 o 6) Patent Attorney Takenaka
- Declaration 5, Date of amendment order (shipment address) Heisei: January 22, 3 [] 6, Subject of amendment (1) Column for brief explanation of drawings in the specification. 7. Contents of correction

Claims (5)

[Claims] (1) An excavation machine that has the ability to excavate in an approximately one-letter shape when viewed from above is placed in a nearby position, and through this excavation machine, an excavation hole filled with stabilizing liquid that is approximately one-letter shape is formed. , Then, solid materials such as reinforcing bar cages and ready-mixed concrete are press-fitted into this almost single-character-shaped excavated hole, and the construction work for one element is completed here, resulting in a roughly single-character-shaped underground wall piece. An approximately one-character-shaped underground wall piece is constructed using the spline method. Thereafter, approximately one-letter-shaped wall pieces for the gap are successively constructed between the approximately one-letter-shaped underground wall pieces using the construction method,
This approximately single-letter-shaped underground wall piece for the gap is connected to the approximately single-letter-shaped underground wall piece. and a connection having great strength in which the outer wall surface is located at the proximity line position of the structure constructed by linking the substantially single-character-shaped underground wall pieces for each of the gaps and each of the substantially single-character-shaped underground wall pieces, respectively. Large cross-section underground walls such as walls, connecting walls, and attached walls. (2) An excavation machine that has the ability to excavate in an approximately straight-shape shape when viewed from above is installed at a nearby line position, and through this excavation machine, while excavating an approximately straight-shape excavation hole, the excavated earth and sand are excavated. Through stirring and mixing with cement milk, a soil-cement-like, almost single-character-shaped underground wall piece material is constructed, and then a reinforcing bar cage is erected on this soil-cement-like, almost single-character-shaped underground wall piece material. This is an approximately single-character-shaped underground wall piece that is constructed after completion of the element construction work, and this approximately single-character-shaped underground wall piece is constructed using a spline method. Thereafter, approximately one-letter-shaped wall pieces for the gap are successively constructed between the approximately one-letter-shaped underground wall pieces using the construction method,
This approximately single-letter-shaped underground wall piece for the gap is connected to the approximately single-letter-shaped underground wall piece. and a connection wall having great strength and having an outer wall surface at a proximity line position of a structure constructed by connecting the substantially single-character-shaped underground wall piece for the gap and the substantially single-character-shaped underground wall piece, respectively; Large cross-section underground walls such as connecting walls and attached walls. (3) In the excavated hole that was drilled in an almost straight-line shape when viewed from above,
A large cross-section of a connecting wall, connecting wall, affixing wall, etc. having a large strength and having an outer wall surface at the proximity line position according to claim 1 or 2, in which a substantially single-character shaped reinforcing bar cage is built. Underground wall. (4) An excavation machine having the ability to excavate in an approximately one-character shape when viewed from above is placed at the construction location, and through this excavation work machine, an excavation hole filled with stabilizing liquid is formed in an approximately one-character shape; After that, solid materials such as reinforcing bar cages and ready-mixed concrete are press-fitted into this almost single-character-shaped excavated hole, and the construction work for one element is completed here, resulting in a roughly single-character-shaped underground wall piece. Single character type underground wall piece,
Construct using spline method. Thereafter, approximately one-letter-shaped wall pieces for the gap are successively constructed between the approximately one-letter-shaped underground wall pieces using the construction method,
This approximately single-letter-shaped underground wall piece for the gap is connected to the approximately single-letter-shaped underground wall piece. and a connecting wall, a connecting wall, and an affixing wall having a structure constructed by connecting each of the substantially single-character-shaped underground wall pieces for each of the gaps and each of the substantially single-character-shaped underground wall pieces, respectively. Large cross-section underground walls such as (5) An excavation machine that has the ability to excavate in an approximately straight shape when viewed from above is placed at the construction location, and the excavated soil and cement are excavated through this excavation machine while excavating an approximately straight hole. Through stirring and mixing with milk, a soil-cement-like, almost single-character-shaped underground wall piece material is constructed, and then a reinforcing bar cage is erected on this soil-cement-like, almost single-character-shaped underground wall piece material, to form one element. This approximately single-character-shaped underground wall piece is constructed after the completion of the construction work, and this approximately single-character-shaped underground wall piece is constructed using the spline method. Thereafter, approximately one-letter-shaped wall pieces for the gap are successively constructed between the approximately one-letter-shaped underground wall pieces using the construction method,
This approximately single-letter-shaped underground wall piece for the gap is connected to the approximately single-letter-shaped underground wall piece. Then, a connection wall, a connection wall, a butt wall, etc., which has a structure with high strength and is constructed by connecting the substantially single-character-shaped underground wall piece for the gap and the substantially single-character-shaped underground wall piece, respectively. Large section underground wall.