JP2002227598A - Construction method for underground structure - Google Patents

Construction method for underground structure

Info

Publication number
JP2002227598A
JP2002227598A JP2001019171A JP2001019171A JP2002227598A JP 2002227598 A JP2002227598 A JP 2002227598A JP 2001019171 A JP2001019171 A JP 2001019171A JP 2001019171 A JP2001019171 A JP 2001019171A JP 2002227598 A JP2002227598 A JP 2002227598A
Authority
JP
Japan
Prior art keywords
pipe
propulsion
underground structure
underground
construct
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.)
Pending
Application number
JP2001019171A
Other languages
Japanese (ja)
Inventor
Takashi Mizutani
Yoshio Mochizuki
Tsuneo Obata
小幡常雄
望月喜雄
水谷隆
Original Assignee
Nippon Zenith Pipe Co Ltd
Tekken Constr Co Ltd
日本ゼニスパイプ株式会社
鉄建建設株式会社
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Nippon Zenith Pipe Co Ltd, Tekken Constr Co Ltd, 日本ゼニスパイプ株式会社, 鉄建建設株式会社 filed Critical Nippon Zenith Pipe Co Ltd
Priority to JP2001019171A priority Critical patent/JP2002227598A/en
Publication of JP2002227598A publication Critical patent/JP2002227598A/en
Pending legal-status Critical Current

Links

Abstract

(57) [Summary] [PROBLEMS] To construct an underground structure having a large diameter and a relatively short overall length with an advantage in terms of cost and construction period, and to construct an underground structure having various cross-sectional shapes with high design flexibility. thing. SOLUTION: A divided body 11 divided into a plurality of pieces along the axial direction is carried into a site to assemble a propulsion pipe 10, and propulsion is performed while sequentially adding a plurality of assembly-type propulsion pipes 10 to the side of the propulsion pipe 10. The pipe support 30 is formed, and a lower part of the pipe support 30 is excavated to construct the underground structure 40.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a technique for constructing an underground structure having a large cross section applicable to a tunnel, an underground platform, an underground mall, an underground storage facility, and the like.

[0002]

2. Description of the Related Art Japanese Patent Laid-Open Publication No. 4-64697 discloses a method in which two advanced shafts are connected to each other by a pipe support in a roof shape, and the ground below the support is excavated to construct a large-section tunnel. Is known by: When the diameter of the advanced pit is relatively large and the total length is long, the shield method is preferable, and the diameter is smaller than the shield method (for example, the inner diameter is 150 mm to 3000 m).
In the case of m), the propulsion method is suitable.

[0003]

For example, an inner diameter of 3500 m
When a tunnel having a large diameter of at least m and a span length of about 300 m and a short overall length is constructed, the above-described conventional tunnel construction technology has the following problems. <B> Due to road conditions, the concrete propulsion pipe with an inner diameter of 3000 mm is the limit of transportation, and a larger diameter pipe cannot be transported. In order to solve the problem of transportation, a method of on-site production of concrete pipes is also conceivable, but it is difficult to secure a production place and there is concern about strength due to insufficient quality control. difficult. <B> The shield construction method is not suitable for the construction of a tunnel with a short overall length, because the use of a shield machine or the like increases the construction cost and requires a long time for preparation and removal of the equipment.

The present invention has been made in view of the above points, and an object of the present invention is to construct an underground structure having a large diameter and a relatively short overall length in an advantageous manner in terms of cost and period, and to design the underground structure. It is to construct underground structures of various cross-sections with high degree of freedom.

[0005]

That is, the invention according to claim 1 is a method for constructing a structure underground by press-fitting a propulsion pipe from a shaft, and comprising a plurality of divided bodies along an axial direction. To the site to assemble the propulsion pipes, propelling while sequentially adding the plurality of assembly-type propulsion pipes, forming a pipe support on the side of the propulsion pipe, and excavating the lower part of the pipe support. Provided is a method for constructing an underground structure, which comprises constructing an underground structure. According to a second aspect of the present invention, there is provided a method for constructing an underground structure according to the first or second aspect, wherein an opening for passing a pipe layer is provided in advance in a divided body constituting the propulsion pipe. provide.

[0006]

Embodiment 1 Hereinafter, an embodiment of the present invention will be described with reference to the drawings.

<A> Field Assembly of Propulsion Pipe FIG. 1 shows a conceptual diagram relating to a method of constructing a large-diameter propulsion pipe 10. The propulsion pipe 10 is, for example, a pipe made of reinforced concrete having an inner diameter of 3500 mm or more.
Consists of one.

Referring to FIG. 2 to FIG.
Is composed of a gutter-shaped piece divided into a plurality of pieces along a direction (axial direction) perpendicular to the cross section of the pipe body, forms an axial joint surface 12 of the skeleton, and has a plurality of bolt holes in the joint surface 12. Having.

The outer periphery of one (left side in FIG. 2) of the divided body 11 forms a concave portion 14 of a fixed length from the end portion in the axial direction, and the outer periphery of the other (right side in FIG. 2) has the concave portion. A collar 15 is provided that can be fitted to the collar 14 so that the recess 14 can fit into the collar 15 when the propulsion tube 10 is connected. In the present invention, the divided body 11 is not manufactured on site, but is manufactured at a high quality in a factory having a manufacturing environment. The number of divided bodies 11 constituting the propulsion pipe 10 may be three or more in addition to the two pieces shown in the drawing. The number may be determined appropriately. The cross-sectional shape of the propulsion pipe 10 is not limited to a circle, but may be an ellipse, a rectangle, or the like.

Next, a method of assembling the propulsion pipe 10 will be described. The above-mentioned divided body 11 manufactured at a high quality is carried into the site. Since the divided body 11 is divided into a size that can be carried, the conveyance of the divided body 11 is not restricted by the diameter of the propulsion pipe 10 to be assembled. And the divided body 11,
The joint surfaces 11 and 12 of the body 11 are joined to each other, and the inside and the outside of the frame are connected by bolts and nuts 13 to form an annular assembly. After the connection, concrete is filled into the bolt box of each divided body 11 to perform a smooth filling process. In addition, as shown in FIG. 4, if a sealing material 16 is provided on the outer peripheral surface of the concave portion 14, the propulsion pipe 1
A high waterproofness can be imparted to the 0 and 10 connection parts.

<B> Propulsion As shown in FIG. 1, the annularly assembled propulsion tube 10 is suspended in a shaft 20 on which a propulsion table 21 is set, and is pressed into the ground using a propulsion jack 22. At this time, the propulsion pipe 10 may be propelled by disposing a sharp-edged conduit 16 at the tip of the propulsion pipe 10 or a known excavator. Thereafter, a step of connecting the extension propulsion pipe 10 to the tail end of the existing propulsion pipe 10 and a press-fitting step are repeated to construct a tunnel to a predetermined length.

[0012]

Second Embodiment FIGS. 5 to 7 show another embodiment in which a horseshoe-shaped underground space is constructed by using the above-described divided propulsion pipe 10. FIG.

As shown in FIGS. 6 and 7, while drilling the ground in an arc from the inside of the propulsion pipe 10 by a boring machine having steerability (not shown), the pipe 31 having a perforated structure is connected and extended. Lay it. The pipe 31 has a larger curvature than the propulsion pipe 10, is laid at predetermined intervals along the axial direction of the propulsion pipe 10, and finally protrudes to the left and right sides of the propulsion pipe 10 to form a roof shape. When laying the pipe 31, the through-hole 17 is previously formed in the divided body 11 to be penetrated by the pipe 31.
Should be provided.

Next, after removing the boring machine, the ground around the group of pipes 31 is reinforced by injecting or freezing a chemical solution through the group of pipes 31 having a perforated structure, and the pipe support 3
0, 30 are formed. While excavating the ground below the pipe supports 30, 30, concrete is poured onto the exposed ground wall surface to form an underground structure 4 having a horseshoe cross section as shown in FIG. 5.
Construct 0. Although not shown, each pipe support 3
After 0, 30 reaches the predetermined position, each pipe support 30
When the widened space is filled with mortar or the like, the tip end portion of each of the pipe supports 30 can be prevented from sinking.

FIG. 8 shows that the above-mentioned arched pipe supports 30, 30 are formed between a plurality of propulsion pipes 10a, 10b, 10c arranged side by side at a predetermined interval, and these pipe supports 30, 30 are formed. Another example in which an underground structure 40 having a rectangular cross section is constructed in a space where the lower part of 30 is excavated. In the drawings, the underground structure 40 and the propulsion pipes 10a to 10c are superposed for convenience of description, but actually, when the underground structure 40 is constructed, a part of the propulsion pipes 10a to 10c is removed.

FIGS. 9 to 11 show an arcuate pipe support 30 formed between a plurality of propulsion pipes 10a to 10d at predetermined vertical and horizontal positions.
Another example of excavating the lower part of the underground to form an underground space having various cross-sectional shapes is shown. 9 shows a case where an underground space having a circular cross section is formed, FIG. 10 shows a case where the cross section is a rounded rectangle, and FIG. 11 shows a case where the cross section is a horizontally long ellipse. In the case where the distance between the propulsion pipes 10a to 10d is long as in this example, the pipe supports 30, 30 having a length reaching the midpoint of the propulsion pipes 10a to 10d are formed, and the pipe supports 30, 30 are formed. Join the tip of When joining the pipe supports 30, 30,
Mortar or the like may be filled into the space where the end portions of the pipe supports 30, 30 have been widened and excavated, and then joined.

The underground structure 40 and underground space thus formed can be used, for example, for mountain tunnels, underground storage tanks, subway platforms, and the like.

In general, when the inner diameter of the propulsion pipe 10 is about 3000 mm, it is often difficult to carry out work by installing construction equipment such as a boring machine and a pile driving machine.
More than 00 mm is required. Even in this embodiment,
Like the first embodiment, the number of the propulsion pipes 10 is not one, and the on-site assembly type divided body 11 is formed in a size that can be transported to the site. Use becomes possible, and workability can be greatly improved.

[0019]

Third Embodiment FIGS. 12 to 15 show two tunnels 50a and 50b between two shield tunnels 50a and 50b.
Another embodiment applied to the case where a platform 51 communicating with a and 50b and a branch tunnel 52 are formed is shown.

In FIG. 12, the propulsion pipe 10 is not shown for easy understanding, but is actually provided above the middle between the shield tunnels 50a and 50b as shown in FIG. FIG. 12 also shows the cross-sectional shape of each part A to C of the tunnel.

FIG. 13 is an explanatory view for constructing the vicinity of the part A in FIG.
A case is shown in which pipe supports 30 are provided between a and 50b and between the bottoms of the shield tunnels 50a and 50b, respectively, and the inside thereof is excavated to form a platform 51.

FIG. 14 is an explanatory view for constructing the vicinity of the portion C in FIG.
A pipe support 30 is provided between a and 50b and between the bottoms of the shield tunnels 50a and 50b, respectively, and the inside of these is excavated in the same manner as the part A, except that the propulsion pipe 10 and the shield tunnels 50a and 50b are excavated. The frame of the branch tunnel 52 is constructed using the pipe supports 30 formed between the two.

FIG. 15 shows shield tunnels 50a and 50b.
FIG. 4 is an explanatory view of independently constructing a branch tunnel 52, in which a substantially annular pipe support layer 52 is formed below the propulsion pipe 10,
The frame of the branch tunnel 52 is constructed inside the pipe support layer 52.

[0024]

As described above, according to the present invention, a large-diameter and relatively short-length propulsion pipe can be used by assembling a split-type propulsion pipe at a site, and therefore, it is advantageous in terms of cost and time. Can be constructed. In addition, a large-diameter propulsion pipe can be used to form an underground space of various cross-sectional shapes with a high degree of design freedom.

[Brief description of the drawings]

FIG. 1 is a model diagram of a method for constructing an underground structure according to the present invention.

FIG. 2 is an explanatory view of a partially broken propulsion pipe.

FIG. 3 is a sectional view of a connecting portion of the divided body.

FIG. 4 is an enlarged sectional view of a connection portion of the propulsion pipe.

FIG. 5 is a model diagram according to the second embodiment.

FIG. 6 is an explanatory view of a process of extending a pipe from a propulsion pipe.

FIG. 7 is an explanatory view of a step of forming a pipe support using a pipe extended from a propulsion pipe.

FIG. 8 is another model diagram of constructing an underground structure using a plurality of propulsion pipes and pipe supports.

FIG. 9 is another model diagram of constructing an underground structure using a plurality of propulsion pipes and pipe supports.

FIG. 10 is another model diagram of constructing an underground structure using a plurality of propulsion pipes and pipe supports.

FIG. 11 is another model diagram of constructing an underground structure using a plurality of propulsion pipes and pipe supports.

FIG. 12 is a model diagram of the invention according to the second embodiment in which a platform and a branch pipe of a shield tunnel are added.

FIG. 13 is an explanatory diagram of a construction method near a part A in FIG.

FIG. 14 is an explanatory diagram of a construction method near a C part in FIG. 12;

FIG. 15 is an explanatory view of a method of constructing a branch pipe in FIG.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 10 Propulsion pipe 11, 11 Split body 20 Vertical shaft 21 Propulsion stand 22 Jack 30 Pipe support 31 Pipe 32 Pipe support layer

 ──────────────────────────────────────────────────続 き Continuing on the front page (72) Inventor Tsuneo Obata 2-5-3 Misakicho, Chiyoda-ku, Tokyo Inside Tekkoken Construction Co., Ltd. (72) Inventor Takashi Mizutani 2-24-14 Higashi-Nihonbashi, Chuo-ku, Tokyo Japan Zenith Pipe Co., Ltd. F-term (reference) 2D054 AA10 AC15 AC18 2D055 AA10 BA04 EB01 FB01 KB08

Claims (2)

[Claims]
1. A method for constructing a structure underground by press-fitting a propulsion pipe from a shaft, comprising: transporting a plurality of divided bodies along an axial direction to a site to assemble the propulsion pipe; A plurality of propulsion pipes of the formula are sequentially added and propelled, a pipe support is formed on a side of the propulsion pipe, and a lower part of the pipe support is excavated to construct an underground structure. How to build the structure.
2. The method for constructing an underground structure according to claim 1, wherein an opening for passing a pipe layer is provided in advance in a divided body constituting the propulsion pipe.
JP2001019171A 2001-01-26 2001-01-26 Construction method for underground structure Pending JP2002227598A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP2001019171A JP2002227598A (en) 2001-01-26 2001-01-26 Construction method for underground structure

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2001019171A JP2002227598A (en) 2001-01-26 2001-01-26 Construction method for underground structure

Publications (1)

Publication Number Publication Date
JP2002227598A true JP2002227598A (en) 2002-08-14

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ID=18885097

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2004353264A (en) * 2003-05-28 2004-12-16 Kajima Corp Construction method of tunnel confluence section and tunnel confluence section
JP2017043982A (en) * 2015-08-27 2017-03-02 鹿島建設株式会社 Underground structure, and construction method of underground structure

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0490000A (en) * 1990-08-01 1992-03-24 Toshinori Toyoda Execution method for large section tunnel and foundation solidifying pillar constructing device
JPH06264698A (en) * 1993-03-17 1994-09-20 Mitsui Constr Co Ltd Method for constructing tunnel
JPH0676492U (en) * 1993-04-12 1994-10-28 眞樹 加藤 Assembled propulsion method pipe
JPH06330689A (en) * 1993-05-24 1994-11-29 Mitsui Constr Co Ltd Tunnel construction method
JPH10114954A (en) * 1997-10-30 1998-05-06 Chiken Kogyo Kk Manhole body block applied to small-bore pipe jacking and method of manhole construction
JP2000265797A (en) * 1999-03-15 2000-09-26 Okumura Corp Construction of tunnel

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0490000A (en) * 1990-08-01 1992-03-24 Toshinori Toyoda Execution method for large section tunnel and foundation solidifying pillar constructing device
JPH06264698A (en) * 1993-03-17 1994-09-20 Mitsui Constr Co Ltd Method for constructing tunnel
JPH0676492U (en) * 1993-04-12 1994-10-28 眞樹 加藤 Assembled propulsion method pipe
JPH06330689A (en) * 1993-05-24 1994-11-29 Mitsui Constr Co Ltd Tunnel construction method
JPH10114954A (en) * 1997-10-30 1998-05-06 Chiken Kogyo Kk Manhole body block applied to small-bore pipe jacking and method of manhole construction
JP2000265797A (en) * 1999-03-15 2000-09-26 Okumura Corp Construction of tunnel

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2004353264A (en) * 2003-05-28 2004-12-16 Kajima Corp Construction method of tunnel confluence section and tunnel confluence section
JP4493936B2 (en) * 2003-05-28 2010-06-30 鹿島建設株式会社 Method for constructing tunnel junction and tunnel junction
JP2017043982A (en) * 2015-08-27 2017-03-02 鹿島建設株式会社 Underground structure, and construction method of underground structure

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