JP2003113695A - Method and propelling pipe for forming earth pressure wall - Google Patents

Method and propelling pipe for forming earth pressure wall

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Publication number
JP2003113695A
JP2003113695A JP2001307013A JP2001307013A JP2003113695A JP 2003113695 A JP2003113695 A JP 2003113695A JP 2001307013 A JP2001307013 A JP 2001307013A JP 2001307013 A JP2001307013 A JP 2001307013A JP 2003113695 A JP2003113695 A JP 2003113695A
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JP
Japan
Prior art keywords
pipe
propulsion
earth pressure
cut
circular
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Withdrawn
Application number
JP2001307013A
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Japanese (ja)
Inventor
Ryoji Honma
良治 本間
Original Assignee
Ryoji Honma
良治 本間
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Application filed by Ryoji Honma, 良治 本間 filed Critical Ryoji Honma
Priority to JP2001307013A priority Critical patent/JP2003113695A/en
Publication of JP2003113695A publication Critical patent/JP2003113695A/en
Withdrawn legal-status Critical Current

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Abstract

(57) [Summary] [Problem] To use a deformed pipe made of a hard material in which a part of the circumference of a circular pipe is depressed and penetrates the recess in the pipe axis direction as a propulsion pipe. It is an object of the present invention to prevent water mixed with earth and sand from entering into a dent when forming an earth pressure wall by superimposing adjacent deformed pipes in the dent to form an earth pressure wall. SOLUTION: The hollow portion of a deformed pipe is filled with an inorganic solid material which is easy to cut, and the outer shape is made into an original circular tubular shape. The front ground is excavated in a circular shape that cuts into the hole, and another similar profiled pipe is propelled into the excavated hole.

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 an earth pressure wall and a propulsion pipe for constructing an earth pressure wall.

[0002]

2. Description of the Related Art It is already known as a pipe roof construction method to construct an earth pressure wall by pushing a large number of pipes into the ground in a state of closely contacting each other one after another. The earth pressure wall thus constructed will be used later to excavate the inside of the earth pressure wall to make a tunnel or the like.

Since the pipe used for such an application is to construct a wall that can withstand earth pressure, it is made of a hard material,
Especially made of iron, especially steel. In addition, the pipes should have the same cross section from one end to the other because they must be in close contact with each other so that water and sediment cannot pass between adjacent pipes in the ground. Therefore, a steel pipe having a circular cross section is actually used as the pipe.

A propulsion method is used to push the pipe into the ground to form an earth pressure wall. The propulsion method is to position the excavator at the tip, excavate the front ground with the excavator, dig a hole just enough to push in the pipe, and push the pipe with the jack while discharging the cut soil through the pipe. And bury it in the ground. Generally, an excavator excavates the front ground in a circular shape, and therefore a pipe having a circular cross section is suitable.

However, when circular tubes are pushed in close contact with each other, adjacent tubes come into direct contact with each other. In this case, the adjacent tubes cannot be firmly bonded to each other. Therefore, in order to firmly connect the adjacent tubes to each other, it has been proposed to attach a locking portion to the tubes and push the tubes in. This proposal is disclosed in, for example, Japanese Patent Laid-Open No. 8-
It is described in Japanese Patent No. 135363.

According to Japanese Patent Laid-Open No. 8-135363, the pipe is not limited to a circular cross-section, but may be a pipe having a quadrangular cross section, and such a pipe is continuously formed from one end to the other end in the longitudinal direction. A first guide means (first locking portion) and a second guide means (second locking portion) are attached, and the first locking portion is formed by cutting a part of the cylinder and traverses it. A pipe roof construction method in which the space is wide and the second locking part is a protrusion whose cross-section is open, and the second locking part is bited into the first locking part to propel the cylinder is doing. Further, this publication describes disposing a seal means in the space to prevent the fluid from flowing in the space serving as the first locking portion. As the sealing means, an organic substance such as expanded polystyrene and expanded rubber is filled in the space serving as the first locking portion.

According to this construction method, the adjacent cylinders are merely connected to each other only by interposing the protruding first engaging parts by engaging the second engaging parts in the first engaging parts. The tubes are far from each other, so the connections between the tubes are not very strong.

Therefore, it has been proposed to use a deformed pipe in order to more firmly connect adjacent pipes. This proposal is described in JP-A-2000-213275. The method described in this publication uses, as shown in FIG. 1, a deformed pipe made of a hard material, in which a part of an arc of a circular pipe having a cross section is recessed, and the recess is penetrated in the pipe axial direction to be present. It is a method of propelling this into the ground. As shown in FIG. 1, the modified tube has a circular cross section,
A circular arc portion a is cut out, a partition b is attached inside the circular arc portion a, and a recess c is formed after the cutout. In the profiled pipe of FIG. 1, a reinforcing piece d is provided inside the recess c in order to reinforce the edge of the recess c.

When the front ground is hard and there is no risk of landslides and no risk of ground water spouting, the deformed pipe shown in FIG. 1 can be directly propelled and buried in the ground. However, in reality, there is rarely any ground where there is no danger of landslides or floods. Therefore, if the profiled pipe shown in FIG. 1 is propelled into the hole excavated in a circular shape, water containing soil and sand may enter the depression c. Then, the surface of the excavated ground will sink, and in extreme cases, the ground will sink. It is absolutely necessary to avoid such a situation. This is because the pipe roof construction method has the greatest advantage that it can excavate underground without affecting the ground surface.

Therefore, in order to avoid the above-mentioned situation, Japanese Patent Laid-Open No. 2000-213275 teaches that a filling material is filled in the depression formed in the underground in the propulsion process. As the filling material, use a solid fine powder that is dissolved or dispersed in water or harmless oil and has plasticity, and has the property of keeping the voids in a certain shape when filled in the voids. I have decided.

Such a filling material works effectively during the progress of propulsion to some extent. However, at a wellhead such as a starting shaft or a reaching shaft, the filling material flows out of the hollow at the time of filling and thus does not work effectively. Therefore, in JP 2000-297593 A, as shown in FIG. 2, a short side pipe e is brought into contact with the recess c at both ends of the deformed pipe 1 so that the filling material filled in the recess c goes out of the pit. It proposes to prevent the outflow. This publication does not particularly explain what the side tube e should be made of, but it is understood that it is formed by bending a metal plate like a tube into a D-shaped cross section. .
The side pipe e is abutted separately on the front end and the rear end of the profiled pipe, but the side pipe at the tip is fixed to the tip of the profiled pipe,
Although it will be moved to the reaching wellhead with the propulsion of the deformed pipe, the side pipe at the rear end is fixed to the wellhead of the starting shaft and is supposed to move with respect to the deformed pipe. And
Filling material is filled between these two side tubes,
It is designed to prevent water mixed with sediment from entering.

However, in this method, attachment and detachment of the side tube are troublesome and time-consuming. In particular, since the side pipe at the rear end must be kept in the starting hole as the profiled pipe is propelled, a seal is required between the side pipe e and the profiled pipe, which complicates the structure. Therefore, this method is not advantageous.

[0013]

DISCLOSURE OF THE INVENTION The present invention is simple and advantageous for preventing the entry of water mixed with earth and sand into the recess provided in the profiled pipe when propelling the profiled pipe as described above. It was done in an attempt to provide a method.

[0014]

This invention is disclosed in Japanese Patent Application Laid-Open No. 2000-
Although the deformed tube used in JP-A-213275 and JP-A-2000-297593 is used, a solid inorganic material which is easy to cut is previously formed over the entire depression of the deformed tube without directly propelling the deformed tube. The main idea is to fill and shape the deformed tube to keep its original circular cross section and propel it into the ground. This eliminates the need for side pipes and allows the use of circular wellheads. As the material that can be easily cut, for example, bentonite cement mortar and various materials can be used. A material that can be easily cut must have such strength that it does not become a burden when cutting with an excavator and that the forming surface does not break even when propelled in contact with the ground. Therefore, if the cohesive soil front ground does not contain gravel and boulders, cutting easily inorganic material may be of the uniaxial compressive strength of about 0.5N / mm 2 ~5.0N / mm 2, but including boulders If it is gravel, 5.0 N / mm 2 to 20 N
/ Mm 2 is desirable.

Further, according to the present invention, the first buried pipe is filled with the first buried pipe adjacent to the first buried pipe laid by first propelling the above-mentioned propulsion pipe. It is necessary to enter the easily-cuttable inorganic material part to excavate the front ground in a circular shape, dig a hole just large enough to accommodate the propulsion pipe, and put the second propulsion pipe in the hole. Characterize. Moreover, at this time, the second propulsion pipe is characterized in that the part of the inorganic material, which is easily cut, is oriented toward the propulsion pipe to be laid next. Therefore, the second
The propulsion pipe is characterized in that the original circular pipe portion thereof, that is, the arc-shaped hard material portion enters into the easily cut material portion of the first embedded pipe.

In this way, the second propulsion pipe is connected to the first
Since it is always in close contact with the buried pipe of No. 3, it is possible to prevent unpleasant earth and sand from entering between these two pipes. In addition, as an easy-to-cut material, an inorganic solid material that does not reduce the strength of concrete even if mixed into concrete is used. When cement mortar or the like is poured in to fill the gap, the embedded pipes can be firmly bonded to each other even if a material that is easily cut remains. Therefore, the subsequent operation becomes easy. The present invention has been completed based on such knowledge.

The present invention relates to a method of embedding a large number of pipes in close contact with each other one after another in the ground to form an earth pressure wall, in which a part of the circumference of a pipe having a circular cross section is depressed as a pipe.
Using a deformed pipe made of a hard material that penetrates through the recess in the axial direction of the pipe, pre-fills the recess of the deformed pipe with an inorganic solid material that is easy to cut. As the pipe, the front ground is excavated in a circular shape to dig a hole for accommodating the propulsion pipe, the propulsion pipe is pushed into the hole to lay the first embedded pipe, and then the first solid embedded solid inorganic material that is easy to cut The front ground is excavated in a circular shape over the part, the hole for accommodating the propulsion pipe is excavated, the second propulsion pipe is inserted in the hole, and the solid material part of the second propulsion pipe which is easy to cut is then buried. Push the second propulsion pipe into the ground toward the pipe, lay the second buried pipe in close contact with the first buried pipe, and repeat this process to bury the propulsion pipes one after another in the ground. The present invention provides a method for forming an earth pressure wall, which is characterized by forming an earth pressure wall.

The present invention also provides a propulsion pipe used in the method for constructing the earth pressure wall described above. The invention related to the propulsion pipe is such that a part of the circumference of the circular pipe is recessed,
In a deformed pipe made of a hard material formed by penetrating the recess in the axial direction of the pipe, the hollow is filled with an inorganic solid material that is easy to cut, and the outer shape is the original circular tubular shape. It is a propulsion tube for pressure wall construction.

[0019]

BEST MODE FOR CARRYING OUT THE INVENTION An example of the present invention will be described below with reference to the drawings. FIG. 3 is a partially cutaway perspective view of the propulsion pipe according to the present invention. Figure 4
FIG. 4 is a partially cutaway perspective view of an embedded pipe laid by pushing the propulsion pipe shown in FIG. 3 into the ground. FIG. 5 is a sectional view of another propulsion pipe according to the present invention. FIG. 6 is a sectional view of the buried pipe when the propulsion pipe shown in FIG. 5 is buried in the ground. Figure 7
FIG. 7 is a sectional view of another propulsion pipe according to the present invention. Figure 8
FIG. 6 is a sectional view of an embedded pipe when the propulsion pipe and the like shown in FIG. 5 are embedded differently. FIG. 9 is a cross-sectional view of a buried pipe formed of still another propulsion pipe according to the present invention. FIG. 10 is a sectional view of still another propulsion pipe according to the present invention. Figure 11
FIG. 3 is a cross-sectional view of the earth pressure wall in a use state constructed by the method of the present invention.

In FIG. 3, the propulsion pipe according to the present invention is
It is based on the deformed tube proposed by Japanese Patent Laid-Open No. 2000-213275. The deformed pipe was originally a circular pipe made of steel, and a part 11 of the circumference was cut out, and a partition wall 12 was newly welded to the inside thereof, and both side edges of the cutout part 11 were separated by the partition wall 12.
It is made to project further, and a recess 13 is formed therein, and the recess 13 penetrates in the axial direction of the pipe to be present. The central angle of the notched arc portion is preferably in the range of 60 to 120 degrees, and particularly preferably in the range of 70 to 90 degrees. In the thus-formed profiled tube, the edge of the notch portion 11 is weak, and therefore a reinforcing piece 14 is provided inside the recess for reinforcement. The propulsion pipe used in the present invention is an inorganic solid material 15 that is easily cut into the recess 13 of such a deformed pipe.
To fill the outer shape of the original circular steel pipe.

As the inorganic material which can be easily cut, various materials other than the above-mentioned bentonite cement mortar can be used. For example, gypsum, diatomaceous earth, clay, AE
Mineral materials such as mortar and foamed mortar can be used. Such a mineral material is advantageous in that when cement mortar is added to this mineral material, it becomes well compatible with the mortar and becomes a solid solid as a whole, so that it is not necessary to completely remove it. As the bentonite cement mortar, it is preferable to use a mixture of sand 3 to 5 and bentonite 0.2 to 1.0 with respect to 1 volume of cement. The inorganic material may contain a small amount of organic matter.

The propulsion pipe shown in FIG. 3 can be formed by excavating the front ground in a circular shape by an excavator, digging a hole in which only the propulsion pipe can be inserted, and pressing the hole into the hole. Thus, this propulsion pipe can be easily buried in the ground by the propulsion method and
It can be a buried pipe. At this time, the propulsion tube is placed toward the propulsion tube into which the solid material 15 which is easy to cut is pushed next.

A second propulsion pipe is placed in the relationship as shown in FIG. 4 in the first buried pipe laid as described above. In FIG. 4, the front ground is excavated by the excavator in a circular shape indicated by a dotted line X so as to cut into a material portion of the first buried pipe 1 which is easy to cut. At this time, the excavation part indicated by the dotted line X is
The embedded pipe 1 is sunk as much as possible into the inorganic solid material portion 15 that is easy to cut. This excavation section is the second
It is large enough to accommodate the propulsion tube.

The second propulsion pipe 2 is put into the hole thus excavated. At this time, the second propulsion pipe is placed so that it faces toward the third propulsion pipe into which the easily cut inorganic material portion 15 is next pushed. In this state, the propulsion pipe 2 is propelled. Then, the hard material portion of the second propulsion pipe 2, that is, the original circular pipe portion comes into contact with the easily-cut inorganic material portion of the propulsion pipe 1. Therefore, the propulsion pipes 1 and 2 are in close contact with each other, with the hard material portion of the propulsion pipe 2 entering the easily-cuttable inorganic material portion of the propulsion pipe 1. Therefore, there is little room for sediment to flow between the two propulsion pipes 1 and 2.

The operation of laying the second propulsion pipe is repeated, and a large number of propulsion pipes are embedded in close contact with each other one after another. As shown in FIG. 4, rebars Y extending in a direction orthogonal to the axis of each pipe are passed between the pipes closely embedded in this way, and a recess 1 filled with a material that is easy to cut is provided.
Superfluid cement mortar, cement paste, or the like is injected into 3 to strengthen the connection between the buried pipes. Furthermore, the buried pipe itself is strengthened by filling the interior of the pipe itself made of a hard material with mortar. As a result, the group of buried pipes constitutes a strong earth pressure wall.

As the propulsion pipe, in addition to the structure shown in FIGS. 3 and 4, the structure shown in FIGS. 5, 7, 9 and 10 can be used. The propulsion tube 3 of the structure shown in FIG. 5 is similar to the propulsion tube 1 shown in FIG.
Compared with the one shown in FIG. 1, an extra locking piece 16 is provided on the outer surface of the tube. As shown in FIG. 6, the locking piece 16 engages the locking piece 16 with the edge of the recess of the buried pipe 1 when pushing the propulsion pipe 3 adjacent to the buried pipe 1 already pushed into the ground. Since the propulsion pipe 3 can be propelled while being stopped, the inorganic solid material portion 1 of the propulsion pipe 3 which is easy to cut
It is useful for orienting 5 in a fixed direction and for propelling the propulsion pipe 3 while ensuring that the propulsion pipe 3 closely contacts the buried pipe 1.

At this time, as shown in FIG. 5, the propulsion pipe 3 is provided with a long fragile material 17 having an L-shaped cross section along the edge of the depression 13 and then made of an inorganic material which can be easily cut thereafter. It is preferable to fill with the solid material 15. As the fragile material 17, it is preferable to use a plastic foam, particularly a synthetic resin foam such as polystyrene or phenol resin. Such brittle material can be easily removed when cutting the solid material 15 which is easy to cut.

Further, the propulsion pipe 4 shown in FIG. 7 is used as a starting pipe to closely extend the propulsion pipe from this pipe to both sides. The propulsion pipe 4 is a pipe having a circular cross section, in which two arcuate portions that are diametrically opposed to each other are notched, and partition walls 42 are provided in each notch to form recesses 43 on both sides, and in each recess 43. Further, a reinforcing piece 44 is attached to form a deformed tube, and the hollow 43 is filled with a solid material 45 that is easy to cut, so that the outer shape is an original circular tube.

FIG. 8 shows an embodiment of the method of the present invention in which the propulsion pipe 5 according to the present invention using a deformed pipe having three depressions is used as a starting pipe and the earth pressure wall is extended in three directions from the starting pipe. There is. The propulsion pipe 5 is formed by cutting out three circular arcs located in one diametrical direction and one radial direction orthogonal to this in one circular pipe, and forming partition walls 52 inside each notch to form a recess. Then, the hollow is filled with an inorganic solid material 55 that is easy to cut, and the outer shape is the original circular tube shape. In FIG. 8, the material 55 is cut to connect the propulsion pipe 3 in three directions.

FIG. 9 shows a cross section of yet another propulsion tube according to the invention. In FIG. 9, the propulsion pipe 6 is a deformed pipe made of concrete in which a part of a pipe having a circular cross section is penetrated in the pipe axial direction to make a depression, and includes a reinforcing bar 61 inside,
The hollow was filled with a solid material 65 that is easy to cut, and the outer shape was originally a circular tube, but in FIG. 9, most of the material 65 is cut to connect with the propulsion pipe 7. ing. Further, the propulsion pipe 6 is provided with locking grooves 67 having a wide cross section on both sides of the depression.

The propulsion pipe 7 in FIG. 9 is similar to the propulsion pipe 6, but is provided with an extra ridge 78 as compared with the propulsion pipe 6.
The protrusion 78 fits into the locking groove 67 of the adjacent propulsion pipe 6 and serves to fix the position of the propulsion pipe 7 with respect to the propulsion pipe 6. In addition, in the propulsion pipe 7, the entrance of the locking groove 77 is closed by a material 79 that is easily peeled off. However, when the material 79 is filled with the inorganic solid material 75 that is easy to cut into the recess, the solid material 75 is locked by the locking groove. When the front ground is excavated in a circular shape across the material 75 while preventing the material 79 from entering into the material 77, the material 79 is immediately peeled off or disappears, and the protrusion of the propulsion pipe adjacent to the locking groove 77 is formed. It helps to make it easier to enter.

FIG. 10 shows a cross section of another propulsion tube 8 according to the present invention. The propulsion tube 8 shown in FIG. 10 is similar to the propulsion tube 3 shown in FIG. 5, but uses two kinds of materials having different compositions as the inorganic solid material with which the depression 13 is filled. It is very different from the propulsion pipe 3. In other words, the propulsion pipe 8 has a predetermined boundary surface 19 that is created by cutting when the second propulsion pipe is buried adjacent to the propulsion pipe 8. Is filled with a material 151 that is not related to the above, preferably a material that is difficult to cut, and a portion that is closer to the surface than the boundary surface 19 is filled with the material that is easy to cut to form the original circular tubular shape. In addition, the stud streak 18 may be fixed to the back portion so that the material 151 is surely left in the recess 13. In this way, it is easy to cut a solid material that is easy to cut.
It is preferable to use concrete as the material 151.

A cross section of the earth pressure wall constructed by using the propulsion pipes 1 to 4 is shown in FIG. The earth pressure wall constructed according to the present invention is used for excavating the inside thereof to form a cavity 9 underground. As shown in the figure, the cavity 9 can be used as a tunnel or a road drainage duct.
In particular, this method can be used to build structures such as tunnels and roads under existing railroad tracks and under rivers.

[0034]

According to the present invention, as a pipe, a deformed pipe in which a part of the circumference of a circular pipe having a circular cross section is recessed, and the recess penetrates in the axial direction of the pipe, is used. A pre-filled with an inorganic solid material that is easy to cut into is the original circular tubular shape of the propulsion tube, and the front ground is excavated in a circular shape to dig a hole for accommodating the propulsion tube and push the propulsion tube into the hole. Since the first buried pipe is laid in, the first buried pipe can be laid without difficulty. Then, the front ground is excavated in a circular shape over the easily-cuttable inorganic material portion of the first embedded pipe, and a hole for accommodating the propulsion pipe is dug, so that the hole is formed by cutting into the first embedded pipe. There is. For this reason, in the process of propelling the propulsion pipe, the outer surface of the propulsion pipe is inserted into the inorganic solid material portion of the embedded pipe, which is easy to cut, and the propulsion pipe is propelled in close contact with the embedded pipe. There is no gap between the two pipes due to the overlap, so there is no risk of a large amount of sediment flowing between them. Therefore, there is no possibility that the ground surface will sink. Moreover, this propulsion is easy because the solid material portion that is easily cut is excavated. In addition, among the buried pipes thus created, the pipes buried later largely cut into the side faces of the pipes buried earlier, so that the connection between adjacent pipes is strong.

In the method of the present invention, when a mineral material such as bentonite mortar is used as the inorganic material that is easy to cut, after the propulsion pipe is buried, the solid material that is easy to cut remains compatible with the concrete. It is not necessary to completely remove the solid material that can be easily cut from the inside, and by pouring the superfluid cement mortar or paste onto this, the adjacent embedded pipes can be firmly fixed. Therefore, the structure of the earth pressure wall becomes easy.

Further, the earth pressure wall forming propulsion pipe according to the present invention serves as a material for forming the earth pressure wall as described above.

[Brief description of drawings]

FIG. 1 is a cross-section of a conventional profiled tube used to construct an earth pressure wall.

FIG. 2 is a perspective view showing a conventional method of forming an earth pressure wall using the deformed pipe shown in FIG.

FIG. 3 is a partially cutaway perspective view of a propulsion pipe according to the present invention.

FIG. 4 is a partially cutaway perspective view of a buried pipe laid by pushing the propulsion pipe shown in FIG. 3 into the ground.

FIG. 5 is a sectional view of another propulsion pipe according to the present invention.

FIG. 6 is a cross-sectional view of an embedded pipe when the propulsion pipe shown in FIG. 5 is embedded in the ground.

FIG. 7 is a cross-sectional view of another propulsion pipe according to the present invention.

8 is a cross-sectional view of a buried pipe when the propulsion pipe and the like shown in FIG. 5 are buried differently.

FIG. 9 is a cross-sectional view of a buried pipe made of yet another propulsion pipe according to the present invention.

FIG. 10 is a cross-sectional view of still another propulsion pipe according to the present invention.

FIG. 11 is a cross-sectional view of the earth pressure wall in a used state constructed by the method of the present invention.

[Explanation of symbols]

a arc part b partition wall c dent d reinforcing piece e side pipe Y rebar 1 deformed pipe 2, 3, 4, 5, 6, 7, 8 propulsion pipe, buried pipe 9 cavity 11 part of circumference, notch 12, 42 , 52 Partition walls 13, 43 Recesses 14, 44 Reinforcing pieces 15, 45, 55, 65, 75 Inorganic solid material 16 that is easy to cut 16 Locking pieces 17 Fragile material 18 Studs 19 Interface 61 Reinforcing bars 67, 77 Locking grooves 78 Ridge 79 Material that is easy to peel off

Claims (6)

[Claims]
1. A method of constructing an earth pressure wall by embedding a large number of pipes in close contact with each other one after another to form an earth pressure wall, in which a portion of the circumference of a circular pipe having a circular cross section is recessed, and the recess is a pipe axis. Using a deformed pipe made of a hard material that penetrates through in the direction, the hollow of the deformed pipe is pre-filled with an inorganic solid material that is easy to cut, and the outer shape of the circular pipe is used as the propulsion pipe. , Excavating the front ground in a circular shape to dig a hole for housing the propulsion pipe, push the propulsion pipe into the hole, and lay the first buried pipe,
Then, the front ground is excavated in a circular shape over the easy-to-cut inorganic solid material portion of the first buried pipe, the hole for accommodating the propulsion pipe is dug, the second propulsion pipe is inserted in the hole, and the second propulsion is performed. The second propulsion pipe is pushed into the ground by directing the easy-to-cut inorganic solid material portion of the pipe toward the propulsion pipe to be laid next.
Construction of earth pressure wall, which is characterized in that a second embedding pipe is laid in close contact with the earth embedding pipe, and then this is repeated to embed propulsion pipes one after another in the ground to form earth pressure wall. Method.
2. In a deformed pipe made of a hard material, wherein a part of the circumference of a circular pipe is dented, and the dent penetrates in the axial direction of the pipe, and an inorganic solid material that is easy to cut is previously formed in the dent. A propulsion pipe for earth pressure wall construction, characterized by being filled and molded into an original circular tubular shape.
3. A boundary surface into which a hard material portion of an adjacent deformed pipe enters into the depression is determined in advance, and an inorganic solid material having no relation to easiness of cutting is filled in the boundary surface. The earth pressure wall forming propulsion pipe according to claim 2, wherein the surface side of the boundary surface is filled with an inorganic solid material that is easy to cut.
4. The propulsion pipe for constructing an earth pressure wall according to claim 3, wherein a stud streak is provided deeper than the boundary surface in the recess.
5. The locking piece is further provided on the outer surface of the profiled tube in the direction opposite to the recess, and the locking piece is further provided.
2. The earth pressure wall forming propulsion pipe according to any one of items.
6. The concrete according to claim 2, wherein concrete containing reinforcing bars is used as the hard material.
Propulsion pipe for earth pressure wall construction as described in one section.
JP2001307013A 2001-10-03 2001-10-03 Method and propelling pipe for forming earth pressure wall Withdrawn JP2003113695A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
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Application Number Priority Date Filing Date Title
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Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100713787B1 (en) * 2006-08-25 2007-05-02 송관권 The underground structure assembly and the underground structure building method which it uses
JP2007162323A (en) * 2005-12-13 2007-06-28 Fukuda Corp Wall body forming method and wall body
KR100815174B1 (en) 2006-09-11 2008-03-20 (주)대우건설 Pipe Roof Tunnel and Constructing Method thereof
CN101806217A (en) * 2010-03-12 2010-08-18 中铁四局集团有限公司 Tunneling method for three-line parallel small-distance shallow-buried and unsymmetrical-pressure tunnel groups
CN103375170A (en) * 2013-07-26 2013-10-30 中铁六局集团石家庄铁路建设有限公司 Underground excavation construction deformation control method for three-hole small clear distance tunnel underpass trunk railway
KR102071647B1 (en) * 2019-06-19 2020-01-30 강신관 Pipe roof structures and construction method of underground structure using thereof

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2007162323A (en) * 2005-12-13 2007-06-28 Fukuda Corp Wall body forming method and wall body
KR100713787B1 (en) * 2006-08-25 2007-05-02 송관권 The underground structure assembly and the underground structure building method which it uses
KR100815174B1 (en) 2006-09-11 2008-03-20 (주)대우건설 Pipe Roof Tunnel and Constructing Method thereof
CN101806217A (en) * 2010-03-12 2010-08-18 中铁四局集团有限公司 Tunneling method for three-line parallel small-distance shallow-buried and unsymmetrical-pressure tunnel groups
CN101806217B (en) * 2010-03-12 2013-05-29 中铁四局集团有限公司 Tunneling method for three-line parallel small-distance shallow-buried and unsymmetrical-pressure tunnel groups
CN103375170A (en) * 2013-07-26 2013-10-30 中铁六局集团石家庄铁路建设有限公司 Underground excavation construction deformation control method for three-hole small clear distance tunnel underpass trunk railway
KR102071647B1 (en) * 2019-06-19 2020-01-30 강신관 Pipe roof structures and construction method of underground structure using thereof

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