JP2901796B2 - Connection device for tunnel lining - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a tunnel covering for use in constructing pipes such as water and sewage systems, subways, telegraph cable housing tunnels, underground passages, water intake tunnels, water discharge tunnels, or common ditch by a shield method or the like. Related to the connecting device.

[0002]

2. Description of the Related Art Conventionally, as a connecting device of a tunnel lining body (concrete segment), as disclosed in Japanese Patent Publication No. 51-24816, a joint of a tunnel lining body (concrete segment) to be connected is used. At the joint of one of the tunnel coverings to be connected is provided with a convex portion having a trapezoidal cross section outside the concave groove, and the other of the tunnel covering to be connected is provided. At the joint of the body, a concave portion having a trapezoidal cross section is provided outside the concave groove, the convex portion and the concave portion of the tunnel covering material to be connected are fitted, and a fall prevention plate is provided at the four corners. Known is a coupling device for a tunnel covering body in which a frame-shaped bracket and a washer are fitted into the concave groove and the coupling bolt, and a nut screwed to the coupling bolt is tightened to connect each tunnel covering. .

[0003]

In the case of the conventional connecting device for a tunnel lining body, the concave portion is formed directly on the concrete tunnel lining body and the convex portion is also made of concrete. Since the shear strength of the tunnel is weak and it is necessary to provide a groove in each of the tunnel coverings to be connected, and to provide a wide area recess in one concrete tunnel covering, Has the disadvantage that the bending strength and the compressive strength in the axial direction of the tunnel are weak. In addition, in the connection device of one tunnel lining body, it is necessary to screw two nuts to the connection bolts and tighten them.
There is a disadvantage that the connecting operation is complicated. Furthermore,
If the alignment of the tunnel lining to be connected is not performed correctly, the concrete projection may be damaged.

[0004]

SUMMARY OF THE INVENTION In order to advantageously solve the above-mentioned problems, in the connecting apparatus for a tunnel covering according to the present invention, an end of one of the adjacent tunnel coverings 1 is attached to the end of the tunnel covering. A metal fitting 2 protruding from the end face of the machine body 1 and a fitting metal fitting 5 having a female screw member 4 having a screw hole 3 parallel to the pin 2 are embedded and fixed, and the other adjacent tunnel covering body 6 is fixed.
The fitting 9 is embedded and fixed to the end of the fitting.
The peripheral edge of a steel bowl 18 having a bolt insertion hole 8B disposed on the back side of the steel fitting body 17 having the pin insertion hole 7 and the bolt insertion hole 8A so as to face the bolt insertion hole 8A. Are integrally provided, and a reinforcing flange 19 is continuously provided around the pin insertion hole 7 in the joint fitting main body 17. The pin 2 in the tunnel covering body 10 with one joint fitting is connected to the other joint. Tunnel lining body 11 with metal fittings
The connection bolt 12 inserted into the bolt insertion hole 8 of the joint fitting 9 of the other tunnel fitting lining body 11 with the joint fitting is inserted into the pin fitting hole 7 of the above. 10 is screwed into the screw hole 3 of the joint fitting 5.

[0005]

1 to 5 show a first embodiment of the present invention, in which a metal pin 2 made of a steel rod and having a frusto-conical tapered surface 13 for insertion guidance at a tip thereof is provided. A female screw member 4 having a screw hole 3 parallel to the pin 2 on the distal end side is disposed in parallel with the female screw member 4, and the distal end of the pin 2 is disposed so as to protrude from the distal end of the female screw member 4; A plurality of connection / anchor bars 14 are wound around the pin 2 and the female screw member 4 and fixed by welding. An anchor bar 15 is fixed to the base end of the pin 2 by welding, and the anchor bar 15 is fixed. The joint fitting 5 is constituted by the pin 2, the female screw member 4, and the connecting and anchoring reinforcing bar 14.

[0006] A plurality of joint fittings 5 configured as described above
Is fixed at one end of the concrete tunnel lining body 1 to be connected in the axial direction of the tunnel with an interval in the circumferential direction of the tunnel, and the distal end surface of the female screw member 4 is The pin 2 is disposed on the same plane as the end face, and the tip of the pin 2 protrudes from the end face of the tunnel covering 1, and further, the inner surface of one end of the tunnel covering 1 (the inner surface on the center side of the tunnel).
A positioning projection 16 is integrally provided on the tunnel radius line passing through the center of the screw hole 3 in the female screw member 4, and the pin 2 is disposed substantially at the center of the tunnel covering 1 in the thickness direction. The member 4 is arranged on the inner side of the pin 2 (center side of the tunnel), and the concrete tunnel covering 1 and the joint fitting 5 embedded and fixed therein constitute a tunnel covering 10 with joint fittings. I have.

A steel bowl 18 having a bolt insertion hole 8B arranged opposite to the bolt insertion hole 8A is provided on the back side of the steel fitting body 17 having the pin insertion hole 7 and the bolt insertion hole 8A. The periphery is integrally connected, a reinforcing flange 19 is continuously provided around the pin insertion hole 7 in the joint fitting main body 17, and a plurality of anchor rebars 20 are fixed to the joint fitting main body 17. The positioning recess 2 is located at a position opposite to the pin fitting hole 7.
1 are provided to form a joint fitting 9.

[0008] A plurality of fittings 9 configured as described above
Is fixed to one end of the other concrete tunnel lining body 6 to be connected in the axial direction of the tunnel with an interval in the circumferential direction of the tunnel, and the surface of the joint fitting body 17 is fixed to the surface of the tunnel lining body 6. The pin insertion hole 7 is disposed on the same plane as the end face, the pin insertion hole 7 is disposed substantially at the center in the thickness direction of the tunnel lining body 6, and the bolt insertion holes 8A and 8B disposed on the same straight line. The bolt operation space 22 is provided inside the hole 7 (center side of the tunnel) and further inside the tunnel lining body 6 on the back side of the joint fitting main body 17, and the pin insertion hole 7 and the bolt insertion hole 8A are provided. The positioning recess 21 is disposed on the radius line of the tunnel, the interval between the pin insertion hole 7 and the bolt insertion hole 8A is set equal to the interval between the pin 2 and the screw hole 3, and the concrete tunnel covering Body 6 and this Joint fitting with tunnel lining member 11 is constituted by the joint fitting 9 which is embedded fixed.

FIG. 3 shows a tunnel lining body 1 with one joint fitting.
A plurality of joint fittings 24 having bolt insertion holes 23 are embedded and fixed to ends of the concrete tunnel coverings 1 and 6 in the circumferential direction of the tunnel. A bolt operation space 25 is provided on the back side of 24, and a mortar grout injection hole 26 is provided in the center of the tunnel covering 1, 6.

When connecting the tunnel lining bodies 10 and 11 with fittings, the tunnel lining body 10 with one fitting is used.
Is moved toward the other tunnel fitting lining body 11 with fittings so that the positioning projections 16 coincide with the positioning recesses 21, and the pins 2 are fitted into the pin fitting holes 7. The end faces of the tunnel lining bodies 10 and 11 are joined, and then the connecting bolts 12 in which the washers 27 are fitted are inserted from the bolt operation spaces 22 into the bolt insertion holes 8A and 8B, and the screw holes of the female screw member 4 are formed. 3 and tighten the connection bolts 12 to fasten and connect the tunnel lining bodies 10 and 11 with the joint fittings.

FIG. 6 and FIG. 7 show a connecting device for a tunnel lining body according to a second embodiment of the present invention. 2
8 is fitted and fixed by welding, and its bearing washer 28
Is arranged on the same plane as the surface of the concrete tunnel lining body 1, and an anchor reinforcing bar 2 is provided on the base end side of the female screw member 4.
9 is fixed by welding, the tip of the female screw member 4 protrudes from the end face of the tunnel covering 1, and the tip of the pin 2 protrudes beyond the tip of the female screw member 4. The distal end of the female screw member 4 is connected to the bolt insertion hole 8 of the joint fitting body 17.
The other configuration is the same as that of the first embodiment.

FIG. 8 and FIG. 9 show another example of the joint fitting 9 having the pin insertion hole 7. The bolt insertion hole 8 A and the pin insertion hole 7 are provided on the web of the steel channel member 30. The two ends of a steel arch-shaped plate 31 having a bolt insertion hole 8B opposed to the bolt insertion hole 8A abut on the inner corner of the channel member 30 and are fixed by welding, and The steel flanges 32 and 33 abutting on both sides in the width direction of the plate 31 are disposed in the channel member 30 and fixed by welding. One end of the steel pin fitting cylinder 34 is inserted into the pin fitting hole 7. It is arranged concentrically and fixed to the web of the channel member 30 by welding, a steel lid plate 35 is fixed to the other end of the pin fitting cylinder 34, and further, to each flange of the channel member 30,
The anchor rebar 20 is fixed by welding.

If the pin 2 is provided with a frusto-conical tapered surface 13 at the tip of the pin 2 as in the above embodiment, when the pin 2 is inserted into the pin insertion hole 7, the pin 2 is inserted into the pin insertion hole 7. On the other hand, even if the eccentricity is slightly eccentric, the insertion can be easily performed by being guided by the frustoconical tapered surface 13.

When the present invention is carried out, a positioning recess may be provided on the tunnel covering 1 and a positioning projection may be provided on the joint fitting body 17.

[0015]

According to the present invention, a metal pin 2 projecting from the end face of one of the tunnel coverings 1 and a screw hole 3 parallel to the pin 2 are formed at the end of one adjacent tunnel covering 1. The fitting metal fitting 5 provided with the female screw member 4 having
A joint fitting 9 having a pin insertion hole 7 and a bolt insertion hole 8 is embedded and fixed to the end of the other adjacent tunnel covering 6,
The pin 2 in the tunnel lining body 10 with one joint fitting is
The connection bolt 12 inserted into the pin insertion hole 7 of the other tunnel fitting with a fitting fitting 11 and inserted into the bolt insertion hole 8 of the fitting 9 of the other tunnel fitting with a fitting fitting 11 is inserted into the one side. Screwed into the screw hole 3 of the joint fitting 5 in the tunnel lining body 10 with the joint fitting, the metal pin 2 of one joint fitting 5 is inserted into the pin fitting hole 7 of the other joint fitting 9, The tunnel lining bodies 10 and 11 with the joint fittings can be strongly connected to a shearing force in a direction perpendicular to the tunnel axis, and one connecting bolt 12 Can be connected by using a tunnel lining 10, 10
Can be easily and quickly connected, and it is not necessary to provide grooves in both tunnel coverings to be connected as in the conventional coupling apparatus for a tunnel covering, and the metal pin 2 is not required. The pin fitting holes 7 are provided in the joint fittings 5 and 9 embedded and fixed in the tunnel coverings 1 and 6, respectively. It can be strongly connected to the compressive force. Further, the pin 2 of the joint fitting 5 in the tunnel covering 10 with one fitting is inserted into the pin fitting hole 7 of the joint 9 in the tunnel covering 11 with the other fitting, whereby the screw hole 3 is formed. Since the center can be aligned with the center of the bolt insertion hole 8, the connection bolt 12 can be easily inserted and screwed, and the tunnel coverings 1, 6 to be connected are shifted in the direction perpendicular to the tunnel axis. It is possible to achieve high shear stiffness by the pins 2 and the bolts 12. Further, the joint fitting 9 is made of steel having a bolt insertion hole 8B arranged on the back side of the steel joint fitting body 17 having the pin insertion hole 7 and the bolt insertion hole 8A so as to face the bolt insertion hole 8A. Since the peripheral edge of the bowl-shaped body 18 is integrally connected and the reinforcing flange 19 is continuously provided around the pin fitting hole 7 in the joint fitting body 17, the top of the adjacent steel bowl-shaped body 18 is formed. The bolt pulling force acting on the steel plate flows radially from its top toward the joint between the entire periphery of the bottom of the steel bowl 18 and the flat plate portion surrounded by the periphery of the joint fitting body 17, and The bowl-shaped body 18 exhibits tensile or compressive resistance in the latitudinal direction due to its bowl-like shape, so that the internal energy absorption capacity can be increased as compared with the conventional joint structure, and the joint fitting body 17 of The flat plate portion exerts a tensile resistance radially around the bolt insertion hole 8A, and thus exhibits a tide arch effect, that is, a three-dimensional tide arch effect in a multidirectional plane passing through the bolt insertion holes 8A and 8B. The joint structure can be made of high-rigidity and high-strength concrete segments, and in order to obtain the same rigidity and strength as the conventional joint structure, it can be manufactured at a low weight and low cost by using less materials. And the like.

[Brief description of the drawings]

FIG. 1 is a vertical cross-sectional side view showing a connection device of a tunnel lining body according to a first embodiment of the present invention.

FIG. 2 is a vertical sectional side view showing the connection device for the tunnel lining body according to the first embodiment of the present invention.

FIG. 3 is a perspective view of a tunnel lining body having the connecting device of the present invention.

FIG. 4 is a perspective view of a fitting having a pin hole.

FIG. 5 is a longitudinal sectional side view of the fitting having the pin hole shown in FIG. 4;

FIG. 6 is a vertical sectional side view showing a connection device of a tunnel lining body according to a second embodiment of the present invention in a separated state.

FIG. 7 is a vertical sectional side view showing a connection device for a tunnel lining body according to a second embodiment of the present invention.

FIG. 8 is a perspective view showing another example of a joint fitting having a pin hole.

FIG. 9 is a longitudinal sectional side view of the joint fitting having the pin hole shown in FIG. 8;

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Tunnel lining body 2 Pin 3 Screw hole 4 Female screw member 5 Joint fitting 6 Tunnel lining body 7 Pin insertion hole 8 Bolt insertion hole 9 Joint fitting 10 Tunnel lining body with joint fitting 11 Tunnel lining body with joint fitting 12 Connection Bolt 13 Frusto-conical taper surface 14 Connecting and anchoring bar 16 Positioning projection 17 Joint fitting body 18 Bowl 19 Reinforcing flange 20 Anchor bar 21 Positioning recess 22 Bolt operation space 27 Washer 28 Bearing washer 29 Anchor reinforcement 30 Channel member 31 Arch-shaped plate 34 Pin fitting cylinder

──────────────────────────────────────────────────続 き Continuation of the front page (72) Minoru Sanoda, inventor Nippon Steel Corporation, 2-3-6, Otemachi, Chiyoda-ku, Tokyo (56) References Japanese Utility Model 1986-202595 (JP, U) 58-25397 (JP, U) (58) Field surveyed (Int. Cl. ⁶ , DB name) E21D 11/04 E21D 11/08

Claims (2)

(57) [Claims] 1. An end portion of one adjacent tunnel lining body 1,
A joint pin 5 having a metal pin 2 projecting from an end face of the tunnel covering body 1 and a female screw member 4 having a screw hole 3 parallel to the pin 2 is embedded and fixed, and the other adjacent tunnel covering is fixed. A joint fitting 9 is embedded and fixed to the end of the body 6, and the joint fitting 9 is opposed to the bolt insertion hole 8 </ b> A on the back side of a steel joint fitting body 17 having a pin insertion hole 7 and a bolt insertion hole 8 </ b> A. The peripheral edge of a steel bowl 18 having a bolt insertion hole 8B arranged so as to be connected to one another is integrally connected, and the reinforcing flange 1 is provided around the pin insertion hole 7 in the joint fitting body 17.
9, the pin 2 of the tunnel lining body 10 with one fitting is fitted into the pin insertion hole 7 of the tunnel lining body 11 with the other fitting, and the other coupling is used. The connection bolt 12 inserted into the bolt insertion hole 8 of the joint fitting 9 in the tunnel lining body 11 with a fitting is screwed into the screw hole 3 of the joint fitting 5 in the one tunnel fitting lining body 10 with a fitting. A connection device for a tunnel lining body, which is characterized in that: 2. The coupling device for a tunnel lining body according to claim 1, wherein the tip of the pin 2 projects beyond the tip of the female screw member 4.