KR20160121363A - Segment for tunnel and construction method thereof - Google Patents

Abstract

According to an embodiment of the present invention, a segment assembly including a bi-directional male socket module capable of preventing a generation of eccentric load in a faying portion of a segment, comprises: a segment including one through path penetrating a tunnel in a longitudinal direction on an inside of a center of a circular arc-shaped body of the tunnel extending in a circumferential direction, first and second longitudinal faying surfaces, and first and second embedded recesses disposed on both ends of the through path with respect to the first and second faying surfaces; a steel wire piece inserted into the through path; an arm member installed in the first embedded recess of the first longitudinal faying surface; and a bi-directional male socket module installed in the second embedded recess of the second longitudinal faying surface, wherein the bi-directional male socket module includes an embedded arm member embedded in the second embedded recess having a wedge installation portion forming a first through hole communicating with the through path inside one end, a protruding intermediate connection member screw-coupled to the other end of the embedded arm member, and a conic member screw-coupled to the protruding intermediate connection member having a second through hole communicating with the through path.

Description

TECHNICAL FIELD [0001] The present invention relates to a segment assembly for a tunnel having a bidirectional male socket module for tightening a longitudinal steel wire, and a tunnel using the segment assembly.

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a segment assembly for a tunnel having a bidirectional male socket module for tensioning a longitudinal steel wire, and a tunnel using the same. More particularly, the present invention relates to a segment assembly for a tunnel, Tension welding of the longitudinal steel wire which can prevent the eccentric load of the joint portion of the segment from being generated by tensioning the steel wire and enable the operator to perform the joining operation easily even when the work space is very narrow without a separate steel wire fastening device To a segment assembly for a tunnel having a bidirectional male socket module and a tunnel using the segment assembly.

Generally, the segment is assembled in the factory after it is assembled in the field. It has many advantages such as reducing noise and complaints generated in the field, shortening the working time and shortening the construction period.

In addition, the segment can be constructed by a shielding method in a tunnel excavation method, that is, a cylindrical shield is inserted into a vertical hole, a tunnel is excavated by rotating a cutter head, and a tunnel is constructed by repeatedly installing a precast segment at the rear of the shield And the like.

In order to bond these segments to each other, a bolt fastening method such as an inclined bolt or a curved bolt is widely used.

However, the bolt fastening method requires manually tightening using a force, and since several bolts are used for each segment, there is a problem that the required air is long.

In addition, in the method using the inclined bolts, the bolts are not disposed perpendicularly to the joining surfaces of the segments, but are arranged obliquely. In the method using the joining bolts, not only the embedding grooves for mounting must be formed very large, There is a problem that an eccentric load is generated due to the load of the segment or the load of the segment itself.

To solve this problem, a method using a steel wire has been proposed.

[Prior Art Literature]

Korean Patent No. 1470056 entitled " Segment Structure Having Longitudinal Stretch Wire and Lateral Shear Key and Construction Method of Shield Tunnel Using It ", filed on Dec. 01, 2014,

Korean Registered Patent No. 1333096 (Registered Date: Nov. 20, 2013), entitled "Steel wire fastening device for assembling a segment of a shield tunnel and method thereof"

However, as shown in FIG. 10, such methods are applied to prevent eccentric loads and to form four through-passages for each segment for earthquake-proof, and to form four segments as one unit, There is a problem that the fixing effect is meaningless and it is difficult to support the shear force and the bending stress generated by the weight of each segment by causing each segment to be fixed by only one steel wire.

Further, it is not very easy to grasp the position of the segment fixed in the field, and a separate feeding device or fastening device for calculating and supplying the steel wire feeding position in advance is required.

In addition, since at least four through-holes must be formed for each segment, there is a difficulty in forming four long longitudinal through-holes when forming the segments, thereby causing the strength of the segments to be weakened, have.

In order to connect the four longitudinal segments, it is necessary to be able to tension and insert a thick and long steel wire having a very high strength. In the tunnel drilling method, since the segment is installed almost simultaneously with the excavation, There is no room for insertion, so that there is a problem that practically such a method can not be practiced.

SUMMARY OF THE INVENTION It is an object of the present invention to provide a bidirectional male socket module capable of preventing an eccentric load from being generated in a joint portion of a tunnel segment and forming a single through- It is possible to work in a separate fastening apparatus or a narrow working space by using a steel wire piece having a short segment width, and it is possible to carry out work in a narrow working space by using a simple fastening method instead of a complicated fastening method, To provide a segment assembly for a tunnel having a bidirectional male socket module for tightening a longitudinal steel wire capable of inter-ring bonding and a tunnel using the segment assembly.

According to an aspect of the present invention, there is provided a segment assembly including a bidirectional male socket module according to an embodiment of the present invention. The segment assembly includes a through-hole passing through the center of a long arc- An arc-shaped segment having longitudinal first and second abutment surfaces, first and second embedding grooves disposed at opposite ends of the through passage with respect to the first and second abutment surfaces;

A steel wire inserted into the through-hole;

An arm member provided in a first embedding groove of the longitudinal first connecting surface; And

And a bidirectional male socket module installed in a second embedding groove of the longitudinal second joint surface,

Wherein the bidirectional male socket module comprises a buried arm member having a wedge seating portion embedded in the second buried groove and forming a first through hole communicating with the through hole, And a cone-shaped member having a protruding intermediate connecting member which is threadedly engaged with the protruding intermediate connecting member and has a second through-hole communicating with the through-hole, and the wedge receiving portion, after the predetermined distance, Having a slope that tapers toward the hole,

Wherein the embossing arm member further comprises a tubular first embedding tube member having a first helical projection formed on an inner wall by a predetermined distance from one end thereof and a reinforcing portion welded to the outside of the first embedding tube portion by at least two L-

The arm member further has a tubular second take-up tube portion and a disc upper portion coupled to an end of the second buried tube portion,

Wherein the protruding intermediate connecting member has a tubular shape and includes an elastic portion for elastically supporting the conical member and a receiving portion for supporting the elastic portion inside, a second helical projection is formed along an outer peripheral portion of one end, Further comprising a protruding tube portion on which a third helical projection is formed along the main portion,

And a first wedge and a second wedge which are respectively engaged with the wedge seating portion of the embroidery arm member and the cone portion of the cone member when the steel wire is inserted through the first and second through holes .

According to another aspect of the present invention, there is provided a tunnel using a segment assembly, comprising: a predetermined number of first segments in an n-th column; and a plurality of first segments in the n-th column, A predetermined number of second segments of a first column are inserted into a through passage passing through a center of each of a predetermined number of second segments of the (n + 1) th column, Directional male socket module of at least three each of the at least three bidirectional male socket modules prepared at the first junction plane of the first segments of the row and at least three bidirectional male socket modules of the first segments of the n- And is engaged with an arm member formed on a second joint surface of the second segments of the (n + 1) th row, wherein n is a natural number.

According to an embodiment of the present invention, a segment assembly for a tunnel having a bidirectional male socket module for tightening a longitudinal steel wire and a tunnel using the same can prevent an eccentric load from being generated at a joint portion of a tunnel segment, Even if only one through-hole is formed for the segment, not only a firm longitudinal fastening to the bidirectional male socket module is possible, but also by using a short steel wire having a segment width of 50 to 60 cm, work is performed in a separate fastening device or a narrow work space Longitudinal segment-to-ring bonding is possible by a simple fastening method rather than a complicated fastening method.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a schematic view showing a tunnel by joining a segment assembly for a tunnel according to an embodiment of the present invention; FIG.
Figure 2 is an exploded view of the tunnel of Figure 1;
3 is a schematic diagram showing a segment assembly for a longitudinally connected tunnel according to one embodiment of the present invention.
4 is a partial cross-sectional view taken along the line AA in Fig.
5 is a partial cross-sectional view taken along the line BB in Fig.
6 is a cross-sectional view showing a coupling relationship between a bidirectional male socket member and a female member according to an embodiment of the present invention.
Fig. 7 is a cross-sectional view taken along the line A of Fig. 2 showing a continuous tension state of the steel wire.
8 is a cross-sectional view taken along the line B in Fig. 2 showing a single tension state of the steel wire.
9 is a flowchart illustrating a method of constructing a tunnel by joining a segment assembly for a tunnel according to an embodiment of the present invention.
10 is a developed view of a tunnel for explaining a longitudinal direction fastening method of a segment for a tunnel using a conventional steel wire.

In order to facilitate understanding of the features of the present invention as described above, a segment for a tunnel having a buried bidirectional connection module for tensioning a longitudinal steel wire according to an embodiment of the present invention and a tunnel construction method using the same Will be described in more detail.

Hereinafter, exemplary embodiments will be described on the basis of embodiments best suited for understanding the technical characteristics of the present invention, and the technical features of the present invention are not limited by the illustrated embodiments, And that the present invention may be implemented with other embodiments. Therefore, it is intended that the present invention covers the modifications and variations of this invention provided they come within the scope of the appended claims and their equivalents. In order to facilitate the understanding of the embodiments described below, in the reference numerals shown in the accompanying drawings, among the constituent elements that perform the same function in the respective embodiments, the related constituent elements are indicated by the same or an extension line number.

FIG. 1 is a schematic view showing a tunnel formed by joining a segment assembly for a tunnel according to an embodiment of the present invention, FIG. 2 is an exploded view of the tunnel of FIG. 1, FIG. 2 is a schematic view showing a segment assembly for a tunnel connected to a tunnel.

As shown in Fig. 1, a segment 1 of a tunnel according to the present invention has a predetermined number of adjoining surfaces arranged in a circumferential direction and a longitudinal direction (tunneling direction: arrow A direction) In the tunnel excavation method, a shielding method, that is, a cylindrical shield is inserted into a straight hole, the cutter head is rotated to excavate the tunnel, and a segment is repeatedly installed at the rear of the shield to construct the tunnel But the present invention is not limited thereto.

In the tunnel segment 1 of the present invention, the tunnel is installed in the longitudinal direction after the installation of one row in the circumferential direction of the tunnel is completed. In the circumferential installation, the tunnel 10 is installed from the lower side to the upper side And a key segment 1 'for a tunnel is installed at the end.

2 and 3, a segment 1 for a tunnel according to an embodiment of the present invention includes an arc-shaped main body 100 in a circumferential direction (ring direction of a tunnel) A through hole 110 passing through a center of a longitudinal first bonding surface 100a and a longitudinal second bonding surface 100b disposed opposite to each other and both ends of the through hole 110, And first and second embedding grooves 120 and 130 disposed at positions spaced equidistantly in the circumferential direction from both ends of the penetrating passages 110.

Of course, the key segment 1 'for a tunnel according to an embodiment of the present invention is similar to the key segment 1 for the tunnel, but differs in that the main body 100' is formed in a key shape.

In order to avoid redundancy in the following description, the segment 1 for a tunnel will be described as including the key segment 1 'for a tunnel, except for a special case.

A bidirectional male socket module 200 and an arm member 270 are installed in the first and second embedding grooves 120 and 130 to longitudinally fasten the installed segment 1a and the segment 1b to be installed .

 In the through-hole 110 formed in the center of the previously installed segment 1a, the steel wire 300 is fixed while being tightened by the bidirectional male socket module 200.

And may be joined by any joining device 400 in the circumferential direction between the segment 1 or the key segment 1 '.

That is, according to the tunnel 10 according to the embodiment of the present invention, the segments 1 are coupled in the circumferential direction in the form of a ring by any joining device 400, and the segment assemblies One steel wire piece 300 passing through one through-hole 110 per one segment 1 in order to prevent longitudinally shifting or departing of the segments 1, and at least three pairs Directional male socket module (200).

Particularly, as will be described later in detail, since the segment 1a of the nth column (n is a natural number) and the segment 1b of the (n + 1) th column adjacent to the longitudinal direction are offset, By tightening (B in Fig. 2), a sufficient load can be dispersed and tightened.

However, in the case where at least one key segment assembly 1 'is included, it is preferable that a plurality of segments are provided between the segment 1a' and the segments 1b 'adjacent to each other in the longitudinal direction, (A portion in Fig. 2).

4 to 6, a bidirectional male socket module constituting a segment assembly for a tunnel according to an embodiment of the present invention will be described in detail.

As shown in FIG. 4, a bidirectional male socket module 200 constituting a segment assembly for a tunnel according to an embodiment of the present invention includes at least three first connection surfaces 100a formed on a first junction surface 100a of a segment 1, Are respectively disposed in the embossing grooves 120.

The bidirectional male socket module 200 mainly includes a buried arm member 210 embedded in the first buried groove 120, a protruding intermediate connecting member 230 coupled to the buried arm member 210, And a cone shaped member 250 which engages with the protruding intermediate connecting member 230.

The embroidery arm member 210 includes a first embedding tube 211 embedded in the first embedding groove 120 and having a tubular shape and having a first helical protrusion 211a formed on the inner wall by a predetermined distance from the tip thereof, A wedge seating portion 213 which is inclined integrally from the predetermined distance of the one-piece tube portion 211 to form the first through-hole 213a; And at least two reinforcing portions 215 made of the same material.

The wedge seating part 213 includes a step 213a formed from the end of the first helical projection 211a and a slope 213b narrowing from the step 213a toward the distal end, And a first through hole 213c through which the steel wire 300 is inserted and fixed when engaged with the slant surface 213b.

The reinforcing portion 215 includes a leg 215a welded in the longitudinal direction along the outer surface of the first embedding pipe 211 and a foot 215 extending transversely to the segment 1 body 100 foot 215b.

Although the legs 215a may be extended to support the embedded arm member 210, the length of the legs 215a may be reduced by having the legs 215b bent in the transverse direction.

The protruding intermediate connecting member 230 includes a tubular protruding tubular portion 233 having a receiving portion 231 fixed by a jaw of an inner intermediate portion and a second wedge 240 And an elastic part 235 which is received to elastically support the elastic part 235 '.

A center hole 231a is formed at the center of the receiving portion 231 so that the steel wire 300 can pass therethrough.

The size of the center hole 231a may be set to a value such that the elastic part 235 does not come off.

The protruded tube portion 233 may have a second helical protrusion 233a along the outer periphery of the tip portion and a third helical protrusion 233b along the inner periphery of the other end portion.

The second spiral projections 233a of the projecting tube portion 233 are screwed to the first spiral projections 211a of the first embedded tube member 211 and the third spiral projections 233b are screw- And may be screwed with a fourth helical projection 251a formed along the outer periphery of the connecting end 251 of the member 250. [

The cone shaped member 250 may have a tubular shape and may include a connecting end portion 251 formed with the fourth helical projections 251a coupled with the third helical projections 233b formed along the inner periphery of the projected tubular portion 233, And may include a cone portion 253 extending in a conical shape from the connection end portion 251 and fixing the steel wire 300 by the second wedge 240 'when the one end of the wire wire piece 300 is inserted.

The cone portion 253 has a large diameter specular surface 255 at the distal end and a small specular surface 257 at the distal end and has a second through hole 257a through which the steel wire 300 is inserted at the center of the small specular surface 257, So that the steel wire 300 can be tensioned and fixed when one end of the steel wire 300 is pulled.

5, the bidirectional male socket module 200 is inserted into the second embedding groove 130 formed in the second joint surface 100b of the segment assembly 1 for a tunnel according to the embodiment of the present invention, The arm member 270 to be engaged can be embedded.

The arm member 270 may include a tubular second embedding tube portion 271 embedded in the second embedding groove 130 and a disc upper portion 273 coupled to an end of the second embedding tube portion 271 have.

A third through hole 275 may be formed at the center of the circular plate upper portion 273 so as to allow the steel wire 300 to pass through the through hole 110 formed at the center of the segment 1.

271a and 273a may be formed corresponding to the inner end of the second buried pipe portion 271 and the outer peripheral edge of the circular plate upper portion 273, respectively.

The end of the second take-up tube portion 271 and the disc upper portion 273 may be integrally manufactured in a bowl shape. However, by separately forming and screwing them together, manufacturing can be facilitated, manufacturing cost can be reduced , It is possible to maintain rigidity by screwing and to make the thickness of the disk upper part 273 freely.

Similarly, a bi-directional male socket module 200, which is a constitution of a segment assembly according to an embodiment of the present invention, includes a wedge seating portion 213 of the buried arm member 210 for fixing one end of the steel wire piece 300, And the cone portion 253 of the cone member 250 for fixing the other end of the steel wire piece 300 is formed by screwing the protrusion type intermediate connecting member 230 with a predetermined length in a direction opposite to the above, It is possible to lower the processing efficiency, to improve the processing efficiency, and to maintain the robustness.

An inlet 271b extending toward the front end may be formed at the tip of the second embedding tube 271 so as to guide the entry of the cone member 250 of the bidirectional male socket module 200 .

6, the bidirectional male socket module 200 is configured such that after the first wedge 240 is seated in the wedge seating portion 213 of the embedded arm member 210 embedded in the first segment 1a, A protruding intermediate connecting member 230 for holding the elastic portion 235 in the protruded tube portion 233 by the receiving portion 231 is engaged and the second wedge 240 And a cone-shaped member 250 on which a plurality of cone-shaped members 250 are mounted.

Of course, in some cases, in the first or second embedding grooves 120, 130 in which no tension is tightened between the longitudinally adjacent segments 1 using the steel wire piece 300, The second wedges 240 and 240 'may not be disposed.

At least three bidirectional male socket modules 200 of the previously installed segment assembly 1a are engaged with the arm members 270 of the segment assembly 1b to be subsequently installed to reinforce one central wire tension Can be concluded.

The first segment assembly 1a, the second segment assembly 1b, and the second segment assembly 1b, which are adjacent to each other in the longitudinal direction by pulling the bidirectional male socket module 200 and the steel wire 300 with reference to FIGS. 7 and 8, The assembly of the three-segment assembly 1c will be described.

Fig. 7 is a cross-sectional view taken along the line A in Fig. 2 showing the continuous tension state of the steel wire, and Fig. 8 is a sectional view taken along the line B in Fig. 2 showing a single tension state of the steel wire.

7, when at least one of the first segment assembly 1a, the second segment assembly 1b, and the third segment assembly 1c is a key segment assembly 1 ', the first segment assembly 1' 1a, second segment assembly 1b, and third segment assembly 1c in order to reinforce the longitudinal fastening between the first segment assembly 1b, the second segment assembly 1b, and the third segment assembly 1c.

More specifically, the steel wire piece 300 is inserted through the through-hole 110 of the first segment 1a to form a first bidirectional male thread portion 100a on the first abutment surface 100a of the first segment 1a The other end is exposed through the embossing arm member 210 of the socket module 200 and the first wedge 240 is inserted into the wedge seating portion 213 of the embossing arm member 210, After the other end of the piece 300 is fixed, the steel wire piece 300 is pulled to be in a tension state and the other end of the steel wire piece 300 is cut.

The conical member 250 is coupled to the buried arm member 210 via the protruding intermediate connection member 230 such that the bidirectional male socket module 200 is inserted into the first joint surface 210 of the first segment 1a, (Not shown).

 The other wire segment 300 of the first segment 1a is inserted into the second segment 1b through the through hole 110 and the first bidirectional male socket module 200 of the first segment 1a is inserted into the second segment 1b, Is inserted into the arm member 270 of the second abutment surface 100b of the first arm portion 1b.

At this time, one end of the inserted steel wire piece 300 is pre-fixed by a second wedge 240 'disposed inside the cone member 250 of the first bidirectional male socket module 200.

Meanwhile, the other end of the inserted steel wire piece 300 is exposed through the embossing arm member 210 of the second bidirectional male socket module 200 provided on the first abutment surface 100a of the second segment 1b The first wedge 240 is inserted into the wedge seating portion 213 of the embossing arm member 210 so that the other end of the steel wire piece 300 is first fixed and then the steel wire piece 300 is pulled And the other end of the steel wire piece 300 is cut.

When the other end of the steel wire piece 300 is pulled by the first joining face 100a of the second segment 1b to be installed, the second wedge 240 May be pushed by the elastic portion 235 disposed between the receiving portions 231 so that the one end of the wire 300 may be fixed to the cone portion 253 in a slightly more tight manner.

When the installation of the second segment 1b is completed by this process, the steel wire pieces 300 (300a, 300b) are attached to the cone member 250 protruding from the first joining face 100a of the second segment 1b, Is fixed by a second wedge 240 'disposed inside the cone-shaped member 250 and then the other end of the wire 300 is pulled so that the third segment 1c Can be longitudinally fastened in a continuous tension state by the first wedge (40) in the embossing arm member (210) of the first abutment surface (100a).

On the other hand, as shown in Fig. 8, when the first segment assembly 1a and the second segment assembly 1b are not all the key segments 1 ', the first segment assembly The first joining face 100a of the installed first segment assembly 1a is connected to the first segment assembly 1b by the single tension of the steel wire piece 300 only with respect to the second segment assembly 1b disposed against the second segment assembly 1b, Can be sufficiently longitudinally fastened by the engagement of the bi-directional male socket module 200 and the arm member 270 of the second abutment surface 100b of the second segment assembly 1b to be installed.

In this case, no tension is applied to the steel wire piece 300 to the embossing arm member 210 of the bidirectional male socket module 200 of the first joint surface 100a of the first segment 1a installed in advance. The protruding intermediate connecting member 230 is engaged while the first wedge 240 is not engaged with the wedge seating portion 213 of the embedding arm member 210 and the second wedge 240 ' The cone-shaped member 250 is coupled to the bidirectional male socket module 200 from the first segment 1a.

The steel wire piece 300 is inserted into the second segment 1b to be installed with respect to the first segment 1a through the through-hole 110 and the two-way male socket module 1b of the first segment 1a, (200) is inserted into the arm member (270) of the second joint surface (100b) of the second segment (1b).

At this time, one end of the inserted steel wire piece 300 is pushed into the inside of the cone member 250 of the first bidirectional male socket module 200 and is fastened by the second wedge 240 ' do.

Meanwhile, the other end of the inserted steel wire piece 300 is exposed through the embossing arm member 210 of the second bidirectional male socket module 200 provided on the first abutment surface 100a of the second segment 1b The first wedge 240 is inserted into the wedge seating portion 213 of the embroidery member 210 so that the other end of the wire 300 is fixed and then the wire 300 is pulled to be in a single tension state And the other end of the steel wire piece 300 is cut.

In the bidirectional male socket module 200 of the second segment assembly 1b, when the other end of the wire 300 is cut, the protruding intermediate connection member 230 Is protruded from the first abutment surface 100a of the second segment 1b provided with the second bidirectional bulldozer module 200 to which the cone-shaped member 250 is coupled without the second wedge 240 ' do.

Similarly, in the bidirectional male socket module 200 disposed in the first embedding groove 120 disposed on both sides of the central first embedding groove 121 except for the central first embedding groove 121, The first wedge 240 and the second wedge 240 'may not be disposed on the wedge seating portion 213 and the cone portion 253 because tensioning of the steel wire piece 300 is unnecessary.

A longitudinal construction method of a tunnel using a segment assembly for a tunnel according to an embodiment of the present invention will now be described with reference to FIG.

9 is a flowchart illustrating a longitudinal tunnel construction method using a segment assembly for a tunnel according to an embodiment of the present invention.

As shown in Figure 9, when a plurality of segment assemblies 1 are longitudinally fastened to construct a tunnel 10, a plurality of segment assemblies 1 include at least one key segment assembly 1 The tensioning of the steel wire segment of the tunnel segment assembly using the bidirectional male socket module is as follows, whether it is coupled in a continuous tension state or not in a single tension state.

First, at least three burying grooves (not shown) are formed in the center of each of the longitudinal first connecting surfaces at the center of a predetermined number of first segments 1a provided in the circumferential direction along the n-th row of the ring shape composed of the plurality of segment assemblies 1 The first wedge 240 is seated on the wedge seating portion 213 of the embedding arm member 210 as shown in Fig. 6 with respect to the embedding arm member 210 embedded in the elastic member 120, 235 are screwed into a protruding intermediate connecting member 230 which is supported by the receiving portion 231 in the protruding tube portion 233 and the second wedge 240 is fixed to the protruding intermediate connecting member 230 The conical member 250 fixed by pulling the other end of the wire 300 is screwed into the bidirectional male socket module 200 (S100).

The steel wire 300 is inserted in advance into the through-passages 110 in the center of the predetermined number of second segments 1b to be installed in the circumferential direction along the (n + 1) th ring-shaped column at step S110.

The male member 270 of the second joining face 100b of the second segment 1b to be installed with the bi-directional male socket module 200 protruding from the first joining face 100a of the first segment 1a installed in the first segment 1a, (S120).

At this time, if one end of the steel wire 300 is pushed through the first through-hole 257a of the cone member 250 of the bidirectional male socket module 200, it is disposed inside the cone member 250 And is fixed by the second wedge 240 '(S130).

The first wedge 100a of the second segment 1b to be installed around the other end of the steel wire 300 exposed through the embossing arm member 210 of the other bidirectional male socket module 200, (240) is inserted into the wedge seating portion (213) of the embroidery member (210) (S140).

The first joint surface 100a of the first segment 1a and the second joint surface 100a of the second segment 1b to be installed are pulled at the other end of the steel wire 300 to fasten (S150).

The other end of the steel wire 300 exposed to the embossing arm member 210 of the second segment 1b is cut off (S160).

100: segment 100 ': key segment
110: penetrating passage 120: first buried groove
130: second embedding groove 200: bidirectional male socket module
210: emboss arm member 230: protruding intermediate connecting member
250: cone member 270: arm member
240: first wedge 240 ': second wedge
300: Steel wire

Claims (7)

A through hole extending in the longitudinal direction of the tunnel in the center of the long arc-shaped main body in the circumferential direction of the tunnel, a longitudinal first and second joint surfaces, An arcuate segment having first and second embedding grooves disposed in the first and second embedding grooves;
A steel wire inserted into the through-hole;
An arm member provided in a first embedding groove of the longitudinal first connecting surface; And
And a bidirectional male socket module installed in a second embedding groove of the longitudinal second joint surface,
Wherein the bidirectional male socket module comprises a buried arm member having a wedge seating portion embedded in the second buried groove and forming a first through hole communicating with the through hole, And a cone-shaped member having a protruding intermediate connecting member which is threadedly engaged with the protruding intermediate connecting member and has a second through-hole communicating with the through-hole, and the wedge receiving portion, after the predetermined distance, Having a slope that tapers toward the hole,
Wherein the embossing arm member further comprises a tubular first embedding tube member having a first helical projection formed on an inner wall by a predetermined distance from one end thereof and a reinforcing portion welded to the outside of the first embedding tube portion by at least two L-
The arm member further has a tubular second take-up tube portion and a disc upper portion coupled to an end of the second buried tube portion,
Wherein the protruding intermediate connecting member has a tubular shape and includes an elastic portion for elastically supporting the conical member and a receiving portion for supporting the elastic portion inside, a second helical projection is formed along an outer peripheral portion of one end, Further comprising a protruding tube portion on which a third helical projection is formed along the main portion,
And a first and a second wedge that are respectively pinched and coupled to the wedge seating portion of the embedding arm member and the cone portion of the cone member when the steel wire is inserted through the first and second through holes, .
The method according to claim 1,
And at least two first and second embedding grooves spaced from both ends of the through-hole at equal intervals on both sides in the circumferential direction of the tunnel.
The method according to claim 1,
Wherein the cone-shaped member has a connecting end portion having a fourth helical projection formed along the outer circumferential portion so as to be screwed with the third helical projecting portion of the protruded tube portion in a tubular shape, and a second through hole extending integrally from the connecting end portion in a cone shape, Thereby forming a cone portion to be formed.
A tunnel using a segment assembly according to any one of claims 1 to 3,
A predetermined number of first segments of the n-th column and a predetermined number of second segments of the n + 1-th column arranged to be longitudinally adjacent to the predetermined number of first segments of the n-th column, At least three or more of the steel wire pieces inserted into the penetrating passages passing through the center of each of the predetermined number of second segments and at least three or more steel wire pieces each provided at the first joint surface of the first segment of the n- Tightened by a central bidirectional male socket module of one of the bidirectional male socket modules,
Wherein at least three bidirectional male socket modules of the first segment of the nth column are interfitted with an arm member formed on a second bonding surface of the second segment of the (n + 1) th row, wherein n is a natural number using a segment assembly tunnel.
5. The method of claim 4,
If a predetermined number of first segments in the nth column and a predetermined number of second segments in the nth + 1th column are keyed segments, a segment in which the tightening of the steel wire pieces is continuous between the first and second segments Tunnel using assembly.
6. The method of claim 5,
A wedge seating part of the embossing arm member of the one central bidirectional male socket module and a fixing part for fixing both ends of the one steel wire piece to the cone part of the cone- 1 < / RTI > and 2 < RTI ID = 0.0 > wedges < / RTI &
5. The method of claim 4,
A predetermined number of first segments of the nth column and a predetermined number of second segments of the (n + 1) th column are general segments, a tunnel using the segment assembly in which a single tension joint of the steel wire segment appears between the first segment and the second segment, .

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