KR102372182B1 - Constructing Method of Underwater Tunnel with Tethering Tunnel Modules, and Underwater Tunnel Constructed by such Method - Google Patents

Abstract

The present invention repeatedly performs the operation of sequentially coupling and installing new tunnel modules at the end of the pre-construction body part while moving the launching girder forward to construct the underwater tunnel, while the finish connected to the fixed cable Tethering the new tunnel module by watertight coupling and fixing the block to the side of the new tunnel module. and guide chain-underwater tunnel construction method with tethering configuration using closing block”, and “underwater tunnel” constructed by this construction method.

Description

Constructing Method of Underwater Tunnel with Tethering Tunnel Modules, and Underwater Tunnel Constructed by such Method}

The present invention relates to a method of constructing an underwater tunnel through which a vehicle or pedestrian can pass, and an underwater tunnel constructed by such a construction method, and specifically, while moving a launching girder forward, While constructing an underwater tunnel by repeatedly performing the work of sequentially combining and installing new tunnel modules at the end of the construction body, the new tunnel module is installed by watertight coupling and fixing the closing block connected to the fixed cable to the side of the new tunnel module. Tethering, but using a guide chain to pull the closing block to easily perform the tethering operation inside the new tunnel module. It relates to an “underwater tunnel construction method having

In the construction of an underwater tunnel constructed in water for the passage of vehicles or pedestrians, the method of sequentially extruding the tunnel module constituting the underwater tunnel from one side of the underwater tunnel to the front (the direction in which the underwater tunnel proceeds) is the Republic of Korea Patent No. 10 -0797795 et al.

As an alternative to this, a new tunnel made of precast concrete members in the form of an enclosure with a launching girder capable of advancing forward is installed at the end of the body part of the pre-construction body part Bring the module into the launching girder or manufacture a new tunnel module in the form of an enclosure with concrete cast on site inside the launching girder, combine the new tunnel module to the end of the body part, and then move the launching girder to the front. by repeating the construction of a new tunnel module inside the launching girder (importing a new tunnel module or manufacturing a new tunnel module of new cast-in-place concrete) and bonding with the end of the body part of the existing construction. A method of constructing a tunnel was proposed.

When constructing an underwater tunnel, the underwater tunnel is made not to float by fixing the underwater tunnel using a fixed cable fixed to the underwater ground at a predetermined interval in the direction (longitudinal direction) in which the underwater tunnel extends. It's called "tethering."

As described above, when the new tunnel modules are sequentially joined and constructed using the launching girder, with the current technology, there is no choice but to perform tethering in a way that a diving manpower is input and a fixed cable is combined with the new tunnel module. However, since the underwater tunnel is built at a considerable depth of water, the input of diving personnel for tethering not only causes long working hours and large costs, but also increases the possibility of safety accidents.

Republic of Korea Patent Publication No. 10-0797795 (published on Jan. 24, 2008)

The present invention was developed to overcome the limitations of the prior art as described above, and in constructing an underwater tunnel by repeatedly performing the operation of sequentially coupling and installing a new tunnel module to the end of the main construction body part while moving the launching girder forward. , Tethering the new tunnel module by watertight bonding and fixing the finishing block installed on the fixed cable to the side of the new tunnel module. It provides an underwater tunnel construction technology that can minimize the input of diving manpower when performing the drilling work, thereby reducing the cost and the risk of safety accidents, enabling precise construction by minimizing construction errors, and increasing construction efficiency. aim to

In addition, the present invention can perform the operation of sequentially coupling and installing a new tunnel module made of a precast concrete member into the inside of the launching girder while moving the launching girder forward, and sequentially coupling and installing it at the end of the pore body part very efficiently. Its purpose is to provide underwater tunnel construction technology.

In the present invention, in order to achieve the above object, a new tunnel module is sequentially coupled and installed at the end of the pre-construction body part while the launching girder is coupled and installed to the front end of the pre-construction body part and the launching girder is moved forward. As a method of constructing an underwater tunnel by repeatedly performing A buoy is installed at the top to float the buoy; The new tunnel module has a rising flotation material that floats to the water surface when separated from the new tunnel module, and a guide line is connected to the rising flotation member. It is connected to the inside of the new tunnel module; integrally bonding the new tunnel module to the pre-construction body part within the launching girder; advancing the launching girder so that when the position where the finishing block is to be combined in the rising floating member and the new tunnel module is exposed to water, separating the rising floating member from the new tunnel module to make it float; separating the floating member and the buoy from the guide line and the guide chain, respectively, and connecting the guide line and the guide chain to each other; and by pulling the guide wire from the inside of the new tunnel module to reduce the length of the guide chain, bring the closing block closer to the lateral side of the new tunnel module, and then fix the finishing block to the new tunnel module integrally to attach the new tunnel module to the fixed cable There is provided an underwater tunnel construction method comprising the step of tethering the new tunnel module by fixing it by

In addition, the present invention provides an underwater tunnel constructed and constructed by the above-described underwater tunnel construction method.

In the underwater tunnel and its construction method of the present invention, the new tunnel module may be pre-fabricated with a precast concrete member. In this case, the launching girder has an opening for loading the new tunnel module into the launching girder. has been; A press-fit traction device is provided in the launching girder, which extends in the longitudinal direction and is fixedly installed on the launching girder 1, a rack member, a pinion member that advances and retreats in the longitudinal direction by engaging the rack member in a rack-and-pinion structure; and a fastening arm extending toward the rear; In the step of integrally bonding the new tunnel module to the pre-construction body part within the launching girder, the new tunnel module manufactured as a precast member is brought into the internal space of the launching girder through the opening and aligned in front of the pre-construction body part. placing; rotating the pinion member in a first direction to approach the front end of the new tunnel module and fastening the fastening arm to the arm fastening jig; In a state where the launching girder is immovably coupled to the pre-construction body portion and fixed, the pinion member is continuously rotated in the first direction and moved backward to push the new tunnel module toward the pre-construction body portion with the fastening arm to push the new tunnel module and pre-construction body bonding the parts integrally; making the launching girder coupled to the pre-construction body part movable, and continuously rotating the pinion member in the first direction while the fastening arm and the arm fastening jig are fastened to advance the launching girder forward; and releasing the fastening arm and the arm fastening jig, and rotating the pinion member in the second direction to move the pinion member forward.

In addition, in the underwater tunnel and its construction method of the present invention, a concave groove is formed at a position where the finishing block is to be coupled in the new tunnel module, a bolt hole is formed in the concave groove, and the upper end of the finishing block is in the concave groove. It has a corresponding shape, and a coupling bolt is protruded from the top surface of the finishing block, and the guide chain passes through the new tunnel module and is wound on the chain winder inside the new tunnel module; The guide chain is wound by the operation of the chain winder and the new tunnel module is submerged, and when the new tunnel module is aligned and placed in front of the existing part, the upper end of the finishing block is fitted so that it is closely attached to the inner surface of the concave groove to maintain a watertight condition. and the coupling bolt protrudes into the inside of the new tunnel module through the bolt hole, and the nut member is fastened to the protruding coupling bolt so that the new tunnel module is tethered by the fixing cable.

Furthermore, in the underwater tunnel and its construction method of the present invention, the fixed cable passes through the closing block and is combined with the closing block; A cable through hole into which a fixed cable is inserted is formed through the bottom surface of the concave groove; When the upper end of the closing block is fitted in close contact with the inner surface of the concave groove, the end of the fixed cable protrudes into the new tunnel module through the cable through hole; As the end of the fixed cable protruding into the new tunnel module is tensioned and fixed, the fixed cable may have a configuration in which tension is introduced, and furthermore, the lower end of the guide chain is coupled to the coupling bolt, so that the guide chain is the bolt of the concave groove. It may have a configuration to enter the interior of the new tunnel module through the ball.

In the present invention, while constructing an underwater tunnel by repeatedly performing the operation of sequentially coupling and installing the new tunnel module to the end of the main construction body part while moving the launching girder forward, the closing block connected to the fixed cable is removed from the side of the new tunnel module In tethering the new tunnel module by tightly coupling and fixing it to the Since the tethering operation by combining can be performed inside the new tunnel module, the tethering of the new tunnel module can be performed very easily, and no diving manpower is put in the tethering process of the new tunnel module; At least, it is possible to minimize the input of diving personnel, and accordingly, it is possible to exert the effect of cost reduction and shortening of the period, and there is an advantage that it is possible to significantly reduce the risk of safety accidents.

In addition, in the present invention, the hole existing in the new tunnel module is closed watertight by the closing block, and at the same time, the new tunnel module is tethered very firmly and stably by the fixed cable. There is this.

In addition, in the present invention, the launching girder is accurately installed in accordance with the direction and location of the route in which the underwater tunnel proceeds, and new tunnel modules are continuously connected and coupled inside the launching girder to construct the underwater tunnel in a curved line. Even if it has, it has the effect of being able to minimize the construction error of the underwater tunnel while constructing the underwater tunnel to conform to the designed curved route.

In particular, in the case of using a new tunnel module made of a precast member, it is sufficient to connect the forward movement of the launching girder and the rear movement of the new tunnel module within the launching girder, so the installation of a loading device, a reaction wall, etc. is omitted or at least the It is possible to reduce the scale, and accordingly, the effect of reducing the operating cost of the equipment is exhibited.

1 is a schematic perspective view showing a state in which a launching girder is installed on a front end of a gi construction body according to a construction method according to an embodiment of the present invention.
FIG. 2 is a schematic lateral side view showing the state shown in FIG. 1 in a transverse direction; FIG.
3 is a schematic longitudinal cross-sectional view taken along line AA of FIG. 2 showing a state in which the new tunnel module is positioned inside the launching girder as viewed in the longitudinal direction.
4 is a schematic perspective view showing a state in which the launching girder is moved forward after the new tunnel module is coupled to the pore body part following the state of FIG. 1 .
FIG. 5 is a schematic lateral side view of the state of FIG. 4 showing a state in which the lifting member rises to the water surface and floats on or near the water surface; FIG.
6 is a schematic longitudinal cross-sectional view taken along line BB of FIG. 5 showing a state in which a guide wire and a guide chain are connected at a position where a concave groove is formed in the new tunnel module.
7 is a schematic longitudinal cross-sectional view corresponding to FIG. 6 showing a state in which the guide wire and the guide chain are wound so that the closing block approaches the lateral side of the new tunnel module.
8 is a schematic longitudinal cross-sectional view corresponding to FIG. 7 showing a state in which a closing block is fixedly coupled to a new tunnel module and the new tunnel module is tethered by a fixed cable.
9 is a schematic perspective view of a closing block provided on the upper portion of the fixed cable.
10 is a schematic front view of the closing block shown in FIG.
11 is a schematic perspective view showing in detail a concave groove to which a closing block is coupled in a new tunnel module.
12A and 12B are schematic partial cross-sectional views of a new tunnel module taken along arrows EE and FF shown in FIG. 10 in the concave groove, respectively.
FIG. 13 is a schematic partial cross-sectional view of a new tunnel module corresponding to FIG. 12 (a) showing the coupling state of the closing block and the concave groove when the new tunnel module is in a tethered state.
14 is a schematic longitudinal cross-sectional view corresponding to FIG. 8 for an embodiment in which a new tunnel module is tethered in a state where fixed cables cross each other.
Figure 15 is a schematic perspective view showing a state in which the launching girder is installed on the front end of the main construction body part according to the construction method according to another embodiment of the present invention.
16 (a) to (d) are schematic longitudinal side views and cross-sectional views, respectively, of a state in which the launching girder is installed in the embodiment of FIG. 15 .
17 (a) and (b) are schematic half-sectional perspective views of a launching girder installed according to the embodiment of FIG. 15 , respectively.
18 is a schematic half-sectional perspective view corresponding to (b) of FIG. 17 showing that a new tunnel module manufactured and transported with a precast member is loaded into the launching girder.
19 and 20 are schematic diagrams corresponding to FIG. 4 sequentially showing the process of loading a new tunnel module into the launching girder according to the construction method of the embodiment shown in FIG. 15, pushing it backward, and coupling it to the pre-construction body, respectively; It is a half-section perspective view.
Fig. 21 is a schematic lateral side view of the state shown in Fig. 20;
22 to 24 are schematic lateral side views corresponding to FIG. 21 sequentially showing a series of processes performed subsequent to the state shown in FIG. 21 according to the construction method of the above-described embodiment, respectively.
25 and 26 are schematic perspective views sequentially showing that the press-fit towing device is coupled to the new tunnel module according to the above-described embodiment, respectively.
27 is a schematic perspective view showing only the press-fit traction device extracted.

Hereinafter, preferred embodiments of the present invention will be described with reference to the accompanying drawings. Although the present invention has been described with reference to the embodiment shown in the drawings, which is described as one embodiment, the technical idea of the present invention and its core configuration and operation are not limited thereby. For reference, in this specification, the direction in which the underwater tunnel extends is described as "longitudinal direction". In particular, the direction in which the underwater tunnel extends as the new tunnel module is gradually joined to the underwater tunnel is described as "front", and The opposite direction is described as "rear".

In the present invention, a new tunnel module made of a precast concrete member is installed in a state where a launching girder capable of advancing forward is installed at the end of the main body of the underwater tunnel. After importing into the furnace, push the new tunnel module backward to connect the new tunnel module to the end of the body of the pre-construction body, or create a new tunnel module by pouring concrete from the inside of the launching girder and combine it with the end of the body of the pre-construction body and launch After advancing the girder, the underwater tunnel is constructed by repeating the process of bringing in a new tunnel module or manufacturing and combining cast-in-place concrete tunnel module as described above.

1 is a schematic perspective view showing a state in which the launching girder 1 is installed at the front end of the pre-construction body 100 in order to build an underwater tunnel according to an embodiment of the construction method according to the present invention. is shown, and FIG. 2 is a schematic transverse side view showing the state shown in FIG. 1 in a transverse direction. FIG. 1 shows only the underwater state, and FIG. 2 shows all of the water surface, unlike FIG. 1 .

As shown in FIGS. 1 and 2 , the launching girder 1 is movably installed at the end of the section where the construction of the tunnel module is completed, that is, at the front end of the pre-construction body part 100 . The launching girder 1 is a structure having an internal space, and the rear end of the launching girder 1 is coupled to the front end of the pore body part 100 and installed, as illustrated in the figure, the pore body part 100 of the The launching girder 1 may be installed at the end of the pre-construction body part 100 so that the front end is inserted into the inner space of the launching girder 1 through the rear end of the launching girder 1 . As the launching girder 1 is coupled to the end of the pre-construction body part 100, a conversion coupling device is provided at the rear end of the launching girder 1, and by the operation of the conversion coupling device, the pre-construction body part 100 ) is fastened so that the rear end of the launching girder 1 surrounding the front end is tightened so that the launching girder 1 is fixed in a “immovable state” or is released so that the launching girder 1 is “movable” forward The "state" method is applied. The conversion coupling device that operates to couple and install the launching girder 1 to the pore body 100 movably in the above manner can be implemented in various forms using known techniques.

The pore body part 100 is tethered by a fixed cable 3 . Another fixed cable (3) for tethering a new tunnel module to be newly connected and installed is fixedly installed in the underwater ground in front of the construction body part 100, and a fixed cable (3) for tethering of the new tunnel module ) is provided with a finishing block (4) at the upper end. 1 and 2, the closing block 4 is shown in the form of being superimposed on the launching girder 1, but in reality the closing block 4 is not coupled to the launching girder 1, but simply the launching girder (1) Since it is located on both sides of the lateral direction, it is only shown in a superimposed form like this. The lower end of the fixed cable (3) is fixed to the underwater ground (300).

In providing the closing block 4 on the upper end of the fixed cable 3 , the fixed cable 3 may be of a type that penetrates the closing block 4 watertightly. In this case, after coupling the closing block 4 to the new tunnel module 200 as described later, the tension introduced into the fixed cable 3 by adjusting the length of the fixed cable 3 inside the new tunnel module 200 It can be done very easily to control the

The guide chain 5 is connected to the closing block 4, and as illustrated in FIG. 2, the buoy 51 is coupled to the upper end of the guide chain 5 to make the buoy 51 float on the water surface. Since the upper end of the guide chain 5 is located on or near the water surface by the buoy 51 , it is possible to easily check the position of the closing block 4 using the buoy 51 and the guide chain 5 , as well as , it is possible to easily perform a connection operation between the guide wire 6 and the guide chain 5 to be described later on the water surface.

The new tunnel module 200 is made of precast concrete members or cast-in-place concrete members. That is, the new tunnel module 200 is pre-fabricated as a precast concrete member in the form of an enclosure on land or on a ship so as to have a hollow through which a vehicle or a person can pass, and the interior of the launching girder 1 . It may be brought into the furnace, or alternatively, it may be manufactured in the form of a housing by concrete cast on site inside the launching girder (1).

3 is a schematic longitudinal cross-sectional view taken along the line A-A of FIG. 2 showing a state in which the new tunnel module 200 is located inside the launching girder 1 in a longitudinal direction. On both sides of the new tunnel module 200 in the transverse direction, rising flotation members 60 to be floated upward to the water surface are installed, and guide wires 6 are connected to the rising flotation members 60 . A winder (M) is provided inside the hollow of the new tunnel module (200), the guide wire (6) is wound around the winder (M), and the lifting member (60) is on the outer side of the new tunnel module (200). is closely attached. The floating member 60 may be separated into the new tunnel module 200 by a remote operation of an operator, etc., and the floating member 60 separated from the new tunnel module 200 rises to the water surface and floats. The lifting member 60 may be made of a lightweight material, or may be made of a member that automatically expands and floats to the water surface by a separate operation by an operator or when separated from the new tunnel module 200 . As will be described later, when tethering, the closing block 4 is integrally coupled to the new tunnel module 200 and tethered. A concave groove portion 20 is formed there, and the lifting member 60 may be provided in a state inserted into the concave groove portion 20 .

After the work of bonding the new tunnel module 200 to the front end of the pre-existing body part 100 in the launching girder 1 is performed to integrate the pre-construction body part 100 and the new tunnel module 200, Move the launching girder (1) forward. 4 is a schematic perspective view showing a state in which the launching girder 1 is moved forward after the new tunnel module 200 is coupled to the pre-construction body part 100 following the state of FIG. 1 . As shown in FIG. 4 , when the launching girder 1 moves forward after the installation of the new tunnel module 200 , the position at which the closing block 4 is coupled and the lifting member 60 in the new tunnel module 200 are underwater. is exposed to In this state, the floating member 60 is separated from the new tunnel module 200 and raised to the surface. When the floating member 60 rises to the water surface, the guide wire 6 is unwound from the winder M and the rising member 60 still maintains a state coupled to the guide wire 6 . FIG. 5 is a schematic lateral side view of the state of FIG. 4 showing a state in which the lifting member 60 rises to the water surface and floats on or near the water surface. In FIG. 5 , the closing block 4 is not yet coupled to the new tunnel module 200 .

6 is a view for showing the state of connecting the guide wire 6 and the guide chain 5 in the form of a longitudinal section, corresponding to the position where the concave groove 20 is formed in the new tunnel module 200 A schematic longitudinal section along line BB in FIG. 5 is shown. In FIG. 6 , in the case of the floating member 60 on one side, it is illustrated that the guide wire 6 is separated from the floating member 60 and connected to the guide chain 5 . As shown in FIG. 6 , the floating member 60 to which the guide chain 5 is connected, and the floating member 60 to which the guide wire 6 is connected are floated on or near the water surface, followed by the floating member 60 . Connect the guide wire (6) connected to the guide chain (5). That is, the operator approaches the buoy 51, removes the buoy 51 from the guide chain 5, and removes the lifting member 60 from the end of the guide wire 6 to remove the guide wire 6 and the guide chain ( 5) is connected.

In this way, after the operation of connecting the guide wire 6 and the guide chain 5 and removing the floating member 60 and the buoy 51 is completed, the guide wire 6 is operated by operating the winder M. wrap it to shorten its length. As the guide wire 6 and the guide chain 5 are pulled into the new tunnel module 200 , the closing block 4 approaches the lateral side of the new tunnel module 200 and adheres thereto. 7 is a schematic diagram corresponding to FIG. 6 showing a state in which the guide wire 6 and the guide chain 5 are wound while the length is reduced so that the closing block 4 approaches the lateral side of the new tunnel module 200 A longitudinal section is shown.

When the closing block 4 approaches both sides in the transverse direction of the new tunnel module 200 , the finishing block 4 is fixedly coupled to the new tunnel module 200 . FIG. 8 corresponds to FIG. 7 showing a state in which the closing block 4 is fixedly coupled to the new tunnel module 200 following the state of FIG. 7 and the new tunnel module 200 is tethered by the fixed cable 3 A schematic longitudinal cross-sectional view is shown. As shown in FIG. 8, when the closing block 4 provided in the fixed cable 3 whose lower end is fixed to the underwater ground is firmly coupled to the new tunnel module 200 and integrated, the construction body part 100 The new tunnel module 200 newly installed in the is in a very stable tethered state by the closing block 4 and the fixed cable 3 coupled thereto. The new tunnel module 200 installed in this way is now a new pre-construction body part, and a new tunnel module is prepared again using the forward-advancing launching girder 1, joined in the same manner as above, and the closing block 4 is tunneled into the tunnel. By repeating the process of tethering by integrating with the module, an underwater tunnel is built.

In the present invention, in order to tether the new tunnel module 200 using the fixed cable 3, the operation of watertight coupling and fixing the closing block 4 to the new tunnel module 200 is performed inside the new tunnel module 200. can be carried out, and accordingly the work can be done easily and the effect of greatly improving the construction efficiency is exhibited.

9 is a schematic perspective view of the closing block 4 provided on the upper portion of the fixing cable 3 is shown, FIG. 10 is a schematic front view of the closing block 4 shown in FIG. 11 is a schematic perspective view showing in detail the concave groove 20 to which the closing block 4 is coupled in the new tunnel module 200 . 11 shows a state in which the closing block 4 is not coupled to the concave groove 20 yet.

Fig. 12 (a) shows a schematic partial cross-sectional view of the new tunnel module 200 along the arrow EE shown in Fig. 11 in the concave groove 20, and in Fig. 12 (b), in the concave groove 20 A schematic partial cross-sectional view of the new tunnel module 200 is shown along the arrow FF, which is a direction orthogonal thereto. FIG. 13 corresponds to FIG. 12 (a) showing the coupling state of the closing block 4 and the concave groove 20 when the new tunnel module 200 is tethered by the fixed cable 3 in this way. A schematic partial cross-sectional view of the new tunnel module 200 is shown.

As mentioned above, the rising flotation member 60 is provided on the outside of the new tunnel module 200, and a guide line 6 is connected to the rising flotation member 60, and the guide line 6 is a new tunnel module ( 200), since it is wound on the provided winder M, a hole through which the guide wire 6 will pass is formed in the new tunnel module 200. In addition, in the process of tethering, the guide chain 5 of the closing block 4 also penetrates the new tunnel module 200 and is wound on the winder M. In order to maintain a watertight dry space inside the underwater tunnel even at high water pressure, the hole formed in the new tunnel module needs to be completely sealed. In addition, for stable tethering of the new tunnel module 200 , the closing block 4 must be firmly coupled to the new tunnel module 200 , and for this purpose, the closing block 4 is closely coupled with the new tunnel module 200 . need to be

To this end, as described above, in the new tunnel module 200 in the present invention, a concave groove 20 may be formed in a portion to which the upper surface of the closing block 4 is in close contact. As shown in the drawing, a portion of the thickness of the new tunnel module 200 is reduced to form a concave groove 20 having a concave groove. Therefore, a part of the upper end of the closing block 4 is accurately fitted into the concave shape of the concave groove 20 to fill the concave groove 20, and the upper surface of the closing block 4 is on the flat bottom surface of the concave groove 20. become close In the case of the embodiment shown in the drawings, the concave groove portion 20 has a concave shape in the form of a polygonal truncated truncated cone that is composed of a flat bottom surface and an inclined surface surrounding the bottom surface, so that the cross-sectional area decreases as the thickness of the new tunnel module increases. , the upper part of the closing block 4 fitted in the concave groove 20 is also formed in a form having a flat front and an inclined side so that it is also precisely matched thereto.

The closing block 4 is provided at the upper end of the fixed cable 3, and in the case of the embodiment of the drawing, the closing block 4 has a central through hole 42 formed therein, so that the fixed cable 3 is a central through hole 42. It is inserted into the closing block (4) and penetrates the end of the fixed cable (3) protruding out of the upper surface of the closing block (3) has a configuration in which the fastening finishing material (33) is coupled. Although not shown in the drawings, a stopper may be installed on the lower surface of the closing block 4 to prevent the closing block 4 from descending along the fixed cable 3 . In this way, when the closing block 4 is provided in the fixed cable 3 in such a way that the fixed cable 3 passes through the closing block 4, the fixed cable 3 is connected to the new tunnel module 200 as described later. It is easy to fix the end by tensioning the inside of the tube, and accordingly, the advantage of tethering of the new tunnel module by the fixed cable 3 can be achieved more firmly and stably. In particular, this configuration has the advantage of being able to adjust the length of the fixed cable (3) when necessary. However, the method of coupling the closing block 4 to the fixed cable 3 is not limited to the above configuration, and various other methods such as welding or buried pressing may be used.

A coupling bolt 40 is integrally provided on the upper surface of the closing block 4 in a protruding form. A plurality of coupling bolts 40 may be provided. In addition, a guide chain 5 is connected to the closing block 4 . 9 to 12, a bolt hole 22 through which the coupling bolt 40 is inserted is formed on the flat bottom surface of the concave groove 20 to which the upper surface of the finishing block 4 is in close contact, as shown in FIGS. When the lower end of the guide chain 5 is coupled to the end of the coupling bolt 40 as exemplified in , the bolt hole 22 can also be used as a hole through which the guide chain 5 passes, and accordingly, the guide chain (5) There is no need to separately form the hole to be penetrated in the new tunnel module 200, and the number of holes to be formed in the new tunnel module 200 can be reduced. Of course, when the lower end of the guide chain 5 is coupled to an arbitrary position on the upper surface of the closing block 4 , a hole through which the guide chain 5 will pass is additionally formed through the concave groove 20 . A cable through hole 23 into which the fixed cable 3 is inserted is formed through the bottom surface of the concave groove 20 .

As described with reference to FIG. 8 , when the new tunnel module 200 is tethered by the fixed cable 3 , the closing block 4 is in close contact with the new tunnel module 200 , specifically, the closing block 4 . The upper part is located in the concave groove part 20 and is completely in close contact. At this time, the coupling bolt 40 is inserted into the bolt hole 22 so as to penetrate the new tunnel module 200 so that the end protrudes into the new tunnel module 200 . The nut member 44 is fastened to the protruding coupling bolt 40 so as to be firmly fixed. The fixed cable 3 and the fastening closure material 33 may be simply inserted into the cable through hole 23 and positioned, but the end of the fixed cable 3 also passes the cable through hole 23 and the new tunnel module 200 may protrude inward. When the fastening finish material 33 is temporarily coupled to the end of the fixed cable 3 protruding out of the upper surface of the closing block 4, the fastening finish material (3) when the fixed cable 3 is inserted into the cable through hole (23) 33) is also located in the cable through hole (23).

When the end of the fixed cable 3 passes through the cable through hole 23 and protrudes into the new tunnel module 200, a simple fastening member 43 is fastened to the protruding end of the fixed cable 3 to secure the fixed cable. (3) can be fixed, but it is also possible to introduce a tension force to the fixed cable 3 by biting the end of the fixed cable 3 with a tension device, etc. desirable. In this way, when tension is introduced into the fixed cable 3 , the new tunnel module 200 can be tethered more firmly and stably.

Above all, in the above configuration, the entire convex portion of the upper portion of the closing block 4 is completely in close contact with the entire concave inner surface of the concave groove portion 20, and thus excellent watertightness is exhibited. In addition, the work of fastening the nut member 44 to the coupling bolt 40 described above, fixing the fastening member 43 at the end of the fixing cable 3 to fix it, or fixing the fixing cable 3 by tensioning it. As it is performed inside the new tunnel module 200, it is possible to not put or at least minimize the diving manpower into the high-pressure environment outside the new tunnel module 200, thereby reducing the risk of safety accidents and saving time and money. The advantages of being able to do this are demonstrated.

14 is a schematic longitudinal cross-sectional view corresponding to FIG. 8 for an embodiment in which the new tunnel module 200 is tethered in a state where the fixed cables 3 are crossed with each other. In tethering the new tunnel module 200 with the fixed cable 3, as shown in FIG. 8, a pair of closing blocks 4 are coupled to both sides of the new tunnel module 200 to form a pair of Although the fixed cables 3 may be positioned on both sides of the new tunnel module 200 without crossing each other, as shown in FIG. 200) can be tethered.

On the other hand, in the present invention, when the new tunnel module 200 is coupled to the pre-construction body part 100 using the launching girder 1 and the new tunnel module 200 is made of a precast concrete member, the following As described in , after bringing in a new tunnel module made of a precast member into the launching girder, using the launching girder 1 as a reaction force support point, push the new tunnel module backward to combine it with the end of the pore body part, and combine it with a new one. Using the new tunnel module as a new reaction force support point, the launching girder is advanced forward, and a new tunnel module made of precast members is brought into the advanced launching girder again and the above process is repeated to construct an underwater tunnel. may be

In FIG. 15, a launching girder 1 having an opening 15 formed therein in order to carry a new tunnel module made of a precast member into the inside of the launching girder 1 is a front end of a pre-construction body 100. A schematic perspective view corresponding to FIG. 1 showing the installed state is shown. 16 is a schematic longitudinal side view and cross-sectional view of a state in which the launching girder 1 is installed, in FIG. 16 (b) is a schematic cross-sectional view in the longitudinal direction along the arrow KK of FIG. 15, and in FIG. is shown, and FIG. 16(d) is a schematic cross-sectional view in the longitudinal direction taken along the arrow HH of FIG. 15 . 16 (a), (b), (c) and (d) are all side views and cross-sectional views at a location other than where the finishing block 4 is coupled, so the closing block 4 and tethering in this regard The configuration to be used is not shown.

17 is a schematic half-sectional perspective view of the launching girder 1 is shown, in FIG. A schematic half-sectional perspective view in the transverse direction along the arrow JJ of (a) is shown, and in FIG. 17 (b), the launching girder 1 is coupled to the front end of the pore body part 100 A schematic half-sectional perspective view in the transverse direction along the arrow JJ of FIG. 17A is shown. 18 is a schematic half-sectional perspective view corresponding to FIG. 17 (b) showing that the new tunnel module 200 manufactured and transported with a precast concrete member is loaded into the launching girder 1 is shown. .

As described above, the launching girder 1 is installed at the end of the pre-construction body part 100 so that the front end of the pre-construction body part 100 is inserted into the inner space of the launching girder 1, and the operation of the conversion coupling device The launch girder 1 by the "immovable state" and "movable state" are coupled to the end of the pore body part 100 to be mutually converted. In this way, the rear end of the launching girder 1 is strongly coupled to the front end of the pore body part 100 or the coupling is loosened and the conversion coupling device for making the movable state is indicated by reference number 210 in FIG. . The conversion coupling device 210 that allows the conversion to the movable state/immovable state of the launching girder 1 to be made can be manufactured by a known technique, so a description of the specific configuration will be omitted.

As shown in FIG. 15 , an opening 15 is formed in the launching girder 1 to bring in a new tunnel module made of a precast member into the launching girder 1 . Therefore, the new tunnel module 200 manufactured as a precast member and transported to the site is carried into the launching girder 1 through the opening 15 . Inside the launching girder (1), a press-fitting towing device (30) is installed. If necessary, a movement guide 2 that allows the newly brought in new tunnel module 200 to easily move backwards may be installed. The movement guide 2 is a member for guiding the new tunnel module 200 brought in so that it can easily move backward. It has a configuration placed on the bottom surface of the launching girder (1) made of a shape. Therefore, in this case, the new tunnel module 200 is placed on the mounting plate of the movement guide 2 . However, the movement guide 2 is not limited to the shape of the mounting plate having the rolling wheel as described above. The movement guide 2 may be formed in the form of a rail installed on the bottom surface of the launching girder 1 so that the new tunnel module 200 can be placed and easily slid, and the new tunnel module 200 can be easily moved backward. It may be implemented in various other forms and provided in the launching girder (1).

The press-fit traction device 30 is, when the new tunnel module 200 is brought into the inner space of the launching girder 1 and aligned in front of the pre-construction body part 100, the new tunnel module 200 is installed in the pre-construction body part ( 100), it is a device that pushes backward to join it. The press-fit traction device 30 is also a device that functions to make the launching girder 1 move forward after the new tunnel module 200 is integrally coupled to the pore body part 100 . The press-fit traction device 30 is a rack member 31 that is fixedly installed on the launching girder 1 and extends to a predetermined length in the longitudinal direction, the rack member 31 and the "rack and pinion (rack and pinion)" )" structure, and a pinion member 32 that advances and retreats in the longitudinal direction, and a fastening arm 33 that extends toward the rear and is detachably fastened to the new tunnel module 200 that is newly loaded. The configuration of the press-fit traction device 30 will be described in detail with reference to the accompanying drawings.

19 and 20, respectively, after the new tunnel module 200 made of a precast member according to the construction method according to the above-described embodiment of the present invention is brought into the launching girder 1, the new tunnel module 200 A schematic half-sectional perspective view corresponding to FIG. 18 is shown sequentially showing the process of coupling to the pore body part 100 by pushing backward. FIG. 21 is a schematic lateral side view of the state shown in FIG. 20 . In FIG. 21, for convenience, only the part where the launching girder 1 is installed is enlarged and shown. In particular, the pre-construction body part 100 and the new tunnel module 200 are shown in a form in which the external side is visible, not the cross-section. However, the launching girder 1 is shown in cross-sectional form so that the internal space thereof is visible.

In the state in which the launching girder 1 is coupled to the front end of the construction body 100, the new tunnel module 200 pre-fabricated in the factory and transported to the site as shown in FIG. 18 is opened through the opening 15. As shown in FIG. 19 , the new tunnel module 200 is arranged in front of the pre-construction body part 100 after being brought into the interior of the launching girder 1 . At this time, if the movement guide 2 assisting the movement of the new tunnel module 200 is provided, the new tunnel module 200 is mounted on the movement guide 2 .

In order for the fastening arm 33 to be separably fastened to the new tunnel module 200, an arm fastening jig 34 may be provided at the front end of the new tunnel module 200. In this case, the arm fastening jig 34 ) is installed in advance before bringing in the new tunnel module 200 into the water. When the new tunnel module 200 is brought into the launching girder 1, although not illustrated in the drawing, the lifting wire is connected to the new tunnel module 200 and the lifting wire is wound and pulled from the inside of the launching girder 1 method can be used. Of course, the present invention is not limited to this method.

Subsequently, as shown in FIG. 20, the pinion member 32 coupled to the rack member 31 is moved backward to approach the front end of the new tunnel module 200, and the fastening arm 33 is attached to the arm fastening jig 34. fasten with The fastening arm 33 is integral with the pinion member 32 and moves together in the longitudinal direction. In the case of the embodiment shown in the drawings, the pinion member 32 is provided in the form of a wheel of a bogie, and the fastening arm 33 is rotated It is constituted in the form of a rotating arm to be operated and is coupled to the bogie. The arm fastening jig 34 is manufactured as a ring-shaped member and fixed to the front end of the new tunnel module 200, and the end of the fastening arm 33 is engaged with the ring shape of the arm fastening jig 34. By manufacturing, the fastening arm 33 and the arm fastening jig 34 can be fastened to facilitate coupling and separation.

22 to 24 are schematic lateral cross-sectional views corresponding to FIG. 21 sequentially showing a series of processes performed subsequent to the state shown in FIG. 21 . After the fastening arm 33 and the arm fastening jig 34 are fastened, a bonding operation of the new tunnel module is performed by pushing the new tunnel module 200 toward the end of the pore body part 100 . As shown in FIG. 23, when the pinion member 32 is rotated and driven in the first direction indicated by the arrow B while the fastening arm 33 is fastened with the arm fastening jig 34, the pinion member 32 is the rack member 31 ) moves from the top to the rear. The dotted line in FIG. 23 shows the state before the pinion member 32 moves. As such, when the pinion member 32 moves backward, the launching girder 1 is already firmly coupled to the front end of the pore body part 100 so that it cannot be moved, and the rack member 31 is the launching girder (1). ) is fixed in one piece. Therefore, when the pinion member 32 is rotated in the first direction while the fastening arm 33 is fastened with the arm fastening jig 34, the launching girder 1 itself acts as a reaction force support point, and the pinion member 32 is While moving backward along the rack member 31, the new tunnel module 200 is pushed toward the front end of the pore body part 100. When the new tunnel module 200 is placed on the movement guide 2 , the new tunnel module 200 can be pushed backward very easily.

When the new tunnel module 200 is pushed rearward by the rear movement of the pinion member 32 , the rear end of the new tunnel module 200 comes into contact with the front end of the pre-construction body part 100 at the correct position. Subsequently, by performing a watertight connection and bonding of the new tunnel module 200 with the pre-construction body part 100 , the pre-construction body part 100 and the new tunnel module 200 are integrated.

After the pre-construction body part 100 and the new tunnel module 200 are integrated, the fastening state between the launching girder 1 and the pre-construction body part 100 is released to make the launching girder 1 movable. The forward movement of the launching girder (1) is carried out by moving the launching girder (1) forward. Specifically, after the launching girder 1 is made movable, the pinion member 32 is moved in the first direction while the fastening arm 33 is still fastened with the arm fastening jig 34 of the new tunnel module 200. rotate again. That is, the pinion member 32 continues to rotate in the first direction indicated by the arrow B as in the case of pushing the new tunnel module 200 backward.

Since the pre-construction body part 100 and the new tunnel module 200 are integrated and the fastening arm 33 is still fastened with the arm fastening jig 34 of the new tunnel module 200, the pinion member 32 is Even if it rotates in one direction, the pinion member 32 cannot move backward any more. On the other hand, the reaction force generated by the rotation of the pinion member 32 in the first direction is transmitted to the new tunnel module 200 and the pore body part 100 through the fastening arm 33 . That is, the unitary construction body part 100 and the new tunnel module 200 become a new reaction force support point for the reaction force generated when the launching girder 1 moves forward. Therefore, when the pinion member 32 in a state that cannot move backward continues to rotate in the first direction, a reaction force is generated thereby, so that the rack member 31 coupled to the pinion member 32 advances forward. Accordingly, the launching girder 1 to which the rack member 31 is fixed also moves forward as shown in FIG. 9 . The dotted line in FIG. 23 shows the state before the launching girder 1 moves.

As such, after the launching girder 1 advances forward by a required distance by the continuous first-direction rotational driving of the pinion member 32, the fastening arm 33 and the arm fastening jig 34 are released to The fastening arm 33 is separated from the arm fastening jig 34, and the pinion member 32 is rotated and driven in a second direction opposite to the first direction (direction indicated by an arrow D in the drawing) as shown in FIG. As shown, the pinion member 32 and the fastening arm 33 are moved forward. That is, the pinion member 32 and the fastening arm 33 are moved to a position capable of accommodating a new tunnel module made of a precast member.

When this operation is completed, by repeating the operation described above with reference to FIGS. 18 to 24 again, the new tunnel module is sequentially integrally assembled and combined to construct the underwater tunnel. That is, a new tunnel module manufactured with an arm fastening jig is brought in through the opening of the launching girder, the fastening arm is fastened with the arm fastening jig, and the new new tunnel module is driven by rotation of the pinion member in the first direction. is pushed backwards to watertightly combine, and the launching girder is made movable again, the launching girder is advanced by the rotational driving of the pinion member, and the fastening arm and pinion member are returned to their original positions (to accommodate another new tunnel module). The process of restoring it to a possible position) will be repeated.

25 and 26 are schematic perspective views sequentially showing that the press-in towing device 30 is coupled to the new tunnel module 200 according to an embodiment of the present invention, and in FIG. 27, the press-in towing device 30 is shown. ), a schematic perspective view showing only As described above, in the present invention, the press-fit traction device 30 includes a rack member 31 , a pinion member 32 , and a fastening arm 33 . In the case of the embodiment shown in the drawings, the rack member 31 having a toothed gear formed on the upper surface is provided with two extending in the longitudinal direction side by side, and each rack member 31 has a toothed gear formed thereon. ) shaped pinion members 32 are interlocked in a “rack and pinion” structure. In particular, in the embodiment shown in the drawings, the pinion member 32 is mounted on a bogie (vehicle) in the form of a wheel. In the case of the embodiment shown in the drawings, the fastening arm 33 is formed in the form of a "rotating arm" that is separably fastened to the arm fastening jig 34 by rotation. In the drawings, reference numeral 320 denotes an arm rotation shaft 320 provided on the bogie for rotation of the fastening arm 33 , and reference numeral 340 denotes a rotation driving device 340 for rotating the fastening arm 33 . In this configuration, as described with reference to FIGS. 19 and 20, when the new tunnel module 100 is brought into the inside of the launching girder 1 through the opening 15 of the launching girder 1, the pinion member 32 is removed. The front end of the new tunnel module 200 is approached and the fastening arm 33 is rotated to fasten it with the arm fastening jig 34 . The contents described above are an example of a method for specifically implementing the press-fit towing device 30 of the present invention, and the present invention is not limited to the above embodiment.

In the embodiment of the present invention described above, a new tunnel module made of a precast member by installing a launching girder 1 at the end of the precast body part 100 is coupled to the precast body part 100 and launched As the girder (1) is sequentially moved forward, the connection construction of this new tunnel module is repeatedly performed to construct an underwater tunnel. becomes available. In particular, in the present invention, since the launching girder (1) is accurately installed in accordance with the direction and location of the underwater tunnel, construction errors can be minimized as well as the new tunnel module manufactured in the factory, the launching girder (1) Since they are quickly connected to each other, the construction efficiency is greatly improved, and accordingly, the overall construction period of the underwater tunnel is shortened and the construction cost is reduced.

In addition, in the case of the prior art of sequentially extruding a new tunnel module, a pressing device, a reaction wall, etc. must be installed for extrusion of the new tunnel module, and the pressing capacity should increase as the extrusion proceeds. In , it is sufficient to connect the new factory-made tunnel module within the launching girder (1), so it is possible to omit or at least reduce the size of the loader, reaction wall, etc., and accordingly the operating cost of the equipment, etc. It has the effect of reducing

1: Launch girder
2: Movement guide
3: Fixed cable
4: Closing block
5: guide chain
15: opening
30: press-fit traction device
31: no rack
32: no pinion
33: fastening arm
34: arm fastening jig
100: Ki construction body part
200: new tunnel module

Claims (6)

The new tunnel module 200 is sequentially coupled to the end of the pre-construction body part 100 while coupling and installing the launching girder 1 to the front end of the pre-construction body part 100 and moving the launching girder 1 forward. As a method of constructing an underwater tunnel by repeatedly performing installation and tethering,
A fixed cable 3 having a closing block 4 at the top is fixed to the underwater ground from the front of the gi construction body 100, and a guide chain 5 is connected to the closing block 4, and , a buoy 51 is installed on the upper end of the guide chain 5 so that the buoy 51 is floating;
When separated from the new tunnel module 200, a rising flotation member 60 that floats to the water surface is provided in the new tunnel module 200, and a guide line 6 is connected to the rising flotation member 60, and induction The end of the line 6 is connected to the inside of the new tunnel module 200 through the position where the closing block 4 is to be coupled;
Integral bonding of the new tunnel module 200 to the pre-construction body part 100 within the launching girder (1);
When the launching girder 1 is advanced to expose the rising flotation member 60 to the water and the position where the closing block 4 is to be coupled in the new tunnel module 200 is exposed to the water, the rising flotation member 60 is inserted into the new tunnel. separating from the module 200 and making it float;
separating the lifting member 60 and the buoy 51 from the guide wire 6 and the guide chain 5, respectively, and connecting the guide wire 6 and the guide chain 5 to each other; and
By pulling the guide wire 6 from the inside of the new tunnel module 200 and reducing the length of the guide wire 6 and the guide chain 5, the closing block 4 is placed on the lateral side of the new tunnel module 200. Including the step of tethering the new tunnel module 200 by integrally coupling the closing block 4 to the new tunnel module 200 after approaching the new tunnel module 200 and fixing the new tunnel module 200 with the fixing cable 3 Underwater tunnel construction method, characterized in that. The method of claim 1,
The new tunnel module 200 is pre-fabricated with precast concrete members;
The opening girder (1) is formed with an opening (15) for bringing in the new tunnel module (200) into the interior of the launching girder (1);
A press-fit traction device 30 is provided in the launching girder 1, the press-fit traction device 30 extends in the longitudinal direction and is fixedly installed on the launching girder 1, the rack member 31, the rack member 31 ) and a pinion member 32 that advances and retreats in the longitudinal direction by engaging in a rack-and-pinion structure, and a fastening arm 33 extending rearward;
In the step of integrally bonding the new tunnel module 200 to the pre-construction body part 100 within the launching girder 1, the new tunnel module 200 made of a precast concrete member is inserted into the launching girder 1 After loading into the furnace, the pinion member 32 is rotated in the first direction to approach the front end of the new tunnel module 200 to fasten the fastening arm 33 to the new tunnel module 200, and the launching girder In a state in which (1) is made immovable, the pinion member 32 is rotated in the first direction and moved to the rear to push the new tunnel module 200 toward the pre-construction body 100 to the pre-construction body 100. performing a process of integrally bonding;
In the step of advancing the launching girder (1). The process of advancing the launching girder 1 forward by making the launching girder 1 movable and continuously rotating the pinion member 32 in the first direction, and attaching the fastening arm 33 to the new tunnel module 200 ), and rotating the pinion member 32 in the second direction to perform the process of moving the pinion member 32 forward. 3. The method of claim 2,
The rack member 31 is fixedly provided to the launching girder 1 in a longitudinally extended form;
The pinion member 32 is provided in the form of a wheel of a bogie and is installed in engagement with the rack member 31 in a rack-and-pinion structure;
The fastening arm 33 is rotatably installed on the bogie provided with the pinion member 32;
An arm fastening jig 34 is provided at the front end of the new tunnel module 200, and the fastening arm 33 rotates to be separably fastened to the arm fastening jig 34. Underwater tunnel construction, characterized in that method. 4. The method according to any one of claims 1 to 3,
In the new tunnel module 200 , a concave groove 20 is formed at a position where the closing block 4 is to be coupled, and a bolt hole 22 is formed in the concave groove 20 , and the upper end of the closing block 4 is formed. has a shape corresponding to the concave groove 20, and a coupling bolt 40 is provided on the upper surface of the closing block 4 to protrude;
As the guide wire 6 and the guide chain 5 are pulled so that the closing block 4 approaches the new tunnel module 200, the upper end of the closing block 4 is fitted in close contact with the inner surface of the concave groove 20. In a watertight state, the coupling bolt 40 penetrates the bolt hole 22 and protrudes into the new tunnel module 200, and the nut member 44 is fastened and fixed to the protruding coupling bolt 40, thereby providing a new tunnel. Underwater tunnel construction method, characterized in that the module 200 is tethered by a fixed cable (3). 5. The method of claim 4,
The fixing cable 3 passes through the closing block 4 and is coupled to the closing block 4 ;
A cable through hole 23 into which the fixed cable 3 is inserted is formed through the bottom surface of the concave groove 20;
When the upper end of the closing block 4 is fitted in close contact with the inner surface of the concave groove 20, the end of the fixed cable 3 passes through the cable through hole 23 and protrudes into the new tunnel module 200;
Underwater tunnel construction method, characterized in that the tension force is introduced to the fixed cable (3) by the end of the fixed cable (3) protruding into the interior of the new tunnel module (200) is fixed in tension. It is an underwater tunnel constructed by sequentially connecting tunnel modules having a hollow space through which vehicles or people can pass, from the water to the front.
An underwater tunnel, which is constructed by the underwater tunnel construction method according to any one of claims 1 to 3, and has a structure in which the tunnel modules are continuously connected.

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