JP2714180B2 - Method and apparatus for constructing shield tunnel lining ring - Google Patents

Description

The present invention relates to a method for constructing a lining ring of a vertical multiple shield tunnel by assembling segments into a shape in which a plurality of pseudo circular portions are connected vertically in a plurality of stages, and Related to the device.

[Conventional technology]

As shown in Fig. 17, a conventionally known multiple shield tunnel is constructed by assembling segments (A, B, K) into a shape in which multiple pseudo circular sections are connected in a row in the horizontal direction to form a lining ring. In such a horizontal multiple shield tunnel, by operating the erectors 40 and 40 'installed in parallel in the machine independently, with the bottom inside the skin plate of the shield machine as a segment place and a working floor,
The assembly of the segments in each row could be performed.

It is said that the vertical multiple shield tunnel is advantageous in that the tunnel occupation width is smaller than that of the horizontal multiple shield tunnel, but no construction technology has been announced at this stage.

[Problems to be solved by the invention]

In a vertical multiple shield tunnel, for example, in the case of a double tunnel, as shown in FIG. 16, an arc-shaped A segment that divides a pseudo-circular portion of upper and lower two stages, a B segment that serves as a floor plate of an upper stage, and One lining ring is formed by K ₁ and K ₂ segments having a substantially V-shaped cross section that join the steps. The segments can be assembled using the upper and lower two-stage erectors installed at the rear of the shield machine in correspondence with the pseudo circular portions of each stage. Therefore, when the segments are assembled by the upper erector, a floor plate serving as a segment storage space and a working floor must be separately provided between the steps.
Moreover, this floor plate must be movable to a position where it does not interfere with the segment during segment assembly. If such a movable floor plate is provided inside a shield machine, the structure of the main body becomes complicated, and Is also restricted.

An object of the present invention is to solve the above-mentioned problems and to provide a method capable of safely and efficiently performing a segment assembling operation for constructing a lining ring of a vertical multiple shield tunnel.

[Means for solving the problem]

In order to achieve the above object, the method for constructing a lining ring of a shield tunnel of the present invention uses a erector installed for each stage at a rear portion of a shield excavator in a pseudo circular portion connected in a plurality of stages in a vertical direction. A method of constructing a lining ring for a shield tunnel by assembling segments into a shape that is connected in multiple stages in the vertical direction and constructing a lining ring for a vertical multiple shield tunnel. Extruding a floor plate for use between upper and lower stages, supplying a segment on this floor plate, holding the segment with an upper erector, retracting the floor plate to a lower stage, and assembling the upper segment. And

Further, the shield tunnel lining ring construction apparatus of the present invention is configured such that a plurality of vertically connected quasi-circular portions are connected to each other in a vertical direction by using erectors installed for each stage behind the shield machine. A lining ring construction device for a shield tunnel that assembles segments into a shaped shape and constructs a lining ring for a vertical multiple shield tunnel. A lifting means is provided on the side, and a work floor plate which is connected to the lifting means and is movable between upper and lower stages is provided.

[Action]

As described above, the floor plate is held at a position opposite to the segment gripping portion of the lower erector via the floor plate raising / lowering jack means, and when the segment is assembled by the upper erector, this floor plate is extruded between the upper and lower erectors, thereby extruding the upper erector. The floor plate can be moved to a position where it does not interfere with the segments by retracting the floor plate and turning the lower erector during segment assembly by the upper erector.

Furthermore, when assembling a segment using a lower erector that does not require a floor plate, segments can be assembled with the floor plate held in the lower erector while being retracted to the lower side, so when the floor plate is not used, it can be carried out to another place, This eliminates the need for re-transportation during use, and eliminates the need to exchange floor plates between the upper and lower erectors as in the case where the floor plates are held on the segment gripper side of the lower erector.

〔Example〕

 Hereinafter, the illustrated embodiment will be described.

FIG. 2 is a vertical sectional view of a vertical double shield excavator used in the present embodiment, FIG. 3 is a left side view thereof, and FIG. 4 is an enlarged view of an erector part on the right side.

The cross section of the shield is similar to the segment assembly shape shown in FIG. 16, and comprises a pseudo-circular portion having two upper and lower stages and a joint having an inverted arc shape. On the front surface of the shield main body 1, two rotary cutters 2, 2 'having the same center as the pseudo-circular portions of the respective sections of the shield cross section are arranged in the same plane. Are partially overlapped and are synchronously driven in opposite directions so that the cut spokes do not interfere with each other. A cutter drive motor 4, a screw conveyor 5 for discharging the earth, a shield jack 6 for propulsion, etc. are installed in the machine separated from the face by the partition wall 3. Further, a rear part of the shield body 1 is used for assembling a two-stage upper and lower segment. Electors 7 and 8 are installed.

5 is a side view of the upper erector 7, FIG. 6 is a sectional view taken along line AA of FIG. 5, FIG. 7 is a sectional view taken along line BB of FIG. 5, and FIG. FIG.

As shown in these figures, the upper erector comprises a pair of arms 12, 12 'each having one end fixed to an axially symmetric position of the above-mentioned turning ring 10 on the same turning ring 10 driven by a turning motor 9. , Guide portions 13, 13 'of the arms 12, 12'
And a pair of lifting portions 14, 14 'which can be translated in a direction perpendicular to the shield axis direction and fixed to the arms 12, 12', and lift the lifting portions 14, 14 'in a direction perpendicular to the shield axis direction. Pressing jacks 15 and 15 'for extending and retracting, and sliders 17 and 17' supported by guide portions 16 and 16 'on respective lifting portions 14 and 14' and capable of moving back and forth in the shield axis direction.
And the sliders 17, fixed to the lifting portions 14, 14 ', respectively.
17 'and segment grippers 18, 18' connected thereto
Slide jacks 19, 19 'for moving the
Segment steady rests 20,2 located on the sides of 4,14 '
0 'and steady rest jacks 21 and 21' fixed to the lifting parts 14 and 14 'for extending and contracting the segment steady rests 20 and 20'.
A pair of left and right independent lifting devices 11, 11 'is provided, and a space 22 is provided between the pair of lifting devices 11, 11' to carry the segments into the respective hanging positions. , Each of the lifting devices 11, 11 'holds the segment,
It has functions of pressing, back and forth movement, and steadying, so that any of single operation and simultaneous operation can be selected.

9 is a side view of the lower erector 8, FIG. 10 is a sectional view taken along the line DD in FIG. 9, and FIG. 11 is a view taken in the direction of the arrow E in FIG.

As shown in these figures, the lower erector 8 has a pair of arms 24 and 24 ′ each having one end fixed to an axially symmetric position of the above-mentioned swivel ring 23 on a swivel ring 23 driven by a swivel motor 9 ′. And an integral suspension beam 26 having guide rods 25, 25 'guided by the arms 24, 24' and movable in a direction perpendicular to the shield axis direction;
Pressing jacks 27 and 27 'fixed to 4' to extend and retract the suspension beam 26, a slider 29 supported on the suspension beam 26 via guide rods 28 and 28 'and movable back and forth in the shield axis direction, A slide jack 31 fixed to the beam 26 to move the slider 29 and the segment gripper 30 coupled thereto forward and backward, the segment swing stoppers 32 and 32 ′ arranged at both ends of the suspension beam 26, and the suspension beam 26. Fixed,
Equipped with a single lifting device consisting of steady rest jacks 33, 33 'for extending and retracting the segment steady rests 32, 32', and this lifting device has functions of gripping, pressing, moving forward and backward, and resting the segment. It was made. Further, a floor plate 34 to be a segment place and a working floor when assembling a segment by the upper erector 7 is held as follows at a position opposite to the segment gripping portion 30 with respect to the erector rotation center of the lower erector 8 as follows. It is.

FIG. 12 is a plan view of the floor plate 34, FIG. 13 is a partially enlarged view of FIG.
FIG. 14 is a sectional view taken along line FF of FIG. 13, and FIG.
It is G sectional drawing.

As shown in FIG. 4, FIG. 9, and FIG. 12 to FIG. 15, a floor plate 34 made of a steel material in a rectangular frame has a pair of guide rods 35, 35 projecting vertically from one side thereof. , And insert the guide rods 35, 35 'into the hollow portions of the guide rods 25, 25' provided on the suspension beam 26 side of the lower erector 8 from the side opposite to the segment gripping portion 30.
The inner surface of the hollow portion 25, 25 'is slidable in a direction perpendicular to the shield axis direction using the inner surface of the hollow portion as a guide. Also, 1
A pair of fittings 36, 36 'are fixedly attached, and rod ends 37 of floor plate lifting jacks 37, 37' as floor plate lifting means attached to the fittings 36, 36 'and the arms 24, 24' of the lower erector 8 are provided.
a, 37a 'are connected by pins 38, 38', respectively, so that the floor plate 34 can be pushed out between the upper and lower tiers or retracted to the lower tier by expansion and contraction of the jacks 37, 37 '.

The vertical dimension a of the floor plate 34 is slightly smaller than the L dimension in FIG. 16 (the interval between the K ₁ and K ₂ segments joining the upper and lower steps), and the horizontal dimension b is substantially equal to the segment width W shown in FIG. I do.

Next, the segment assembling procedure will be described with reference to FIG.
The segments consist of four types of segments, A, B, K ₁ , and K ₂ , as shown in FIG. 16. _One segment has a long V-shaped K ₁ segment and both segments have a short V-shaped K ₂ segment. The A segment and K ₁ , K ₂
Assemble the staggered segments in the shield axis direction by shifting the joint positions of the segments.

In FIG. 1, a hatched portion of a segment indicates an assembling completed portion, and a non-hatched portion indicates an unassembled portion. Assembling proceeds from (a) to (m).

(A) shows a state where the lower-stage A segment is being assembled using the lower-stage erector 8. At this time, the floor plate elevating jacks 37, 37 'are contracted, and the floor plate 34 is held at a position opposite to the segment holding portion 30 of the lower erector 8 with the floor plate 34 retracted from between the steps.

After the assembly of the lower A segment is completed, as shown in FIG.
4 'is turned, and the floor plate lifting jacks 37 and 37' are extended to push the floor plate 34 from the lower erector 8 toward the upper erector 7.

(C) is on a floor plate 34 extruded to a predetermined position between the steps.
Carries the K ₁ segment, illustrating a state in which the grip on the left side lifting apparatus 11 of the upper Elekta 7.

(D) and (e) show the left lifting device 11 of the upper erector 7.
The shows a state where the single operation to doing assembly of K ₁ segment, floor lifting jack lower Elekta 8 accordingly
Perform the turning operation of the 'retraction operation and the arm 24, 24 of the floor plate 34 by' 37, to move the floor plate 34 at a position not interfering with K ₁ segment during assembly.

(F) shows the completed assembly state of K ₁ segment.

(G) shows a state in which the floor plate 34 is returned to a predetermined position between the steps, and the upper A segment carried thereon is gripped by the right lifting device 11 ′ of the upper erector 7.

(H) shows a state in which the right lifting device 11 'of the upper erector 7 is independently operated to assemble the upper A segment, and also at this time, the floor plate lifting jacks 37, 3 of the lower erector 8 are shown.
The floor plate 34 is pulled in by 7 'to move the floor plate 34 to a position where it does not interfere with the upper A segment during assembly.

After completion of assembly of the upper A segment, the floor plate 34 as shown in (i) return to a predetermined position between the stages, thereby gripping the left lifting device 11 of the upper Elekta 7 carries the K ₂ segments thereon.

(J) and (h) show the left lifting device 11 of the upper erector 7.
The shows a state where the single operation to doing assembly of K ₂ segments, floor lifting jack lower Elekta 8 accordingly
Perform the turning operation of the 'retraction operation and the arm 24, 24 of the floor plate 34 by' 37, to move the floor plate 34 at a position not interfering with K ₂ segments during assembly.

After completion of assembly of K ₂ segments, floorboards, as shown in (l 34
Is returned to a predetermined position between the stages, and the B segment is loaded thereon.

(M): Left and right lifting devices 11, 11 'of the upper erector 7
Are simultaneously operated to suspend the B segment, and the floor plate 34 is retracted by the floor plate elevating jacks 37, 37 'of the lower erector 8 to complete the assembly of the B segment.

This completes the segment assembly for one ring, and
Is held in the lower erector 8 in a state of being retracted until the next segment assembling operation.

As is clear from FIG. 1, the floor plate 34 held at a position opposite to the segment gripping portion of the lower erector 8 is pushed out between upper and lower stages by floor plate lifting jacks 37 and 37 ', and this floor plate 34 is placed in the segment storage area and The segment is assembled by the upper erector 7 as a working floor for bolt fastening of the segment joint portion, etc. When the lower erector 8 assembles the segment, the floor plate 34 is held at a position opposite to the segment gripping portion of the lower erector 8 while the lower erector 8 is held. By retreating to the side, a series of segment assembling operations (a) to (m) can be performed safely and efficiently.

In the above embodiment, the pseudo circular portion of the lining ring has two upper and lower stages, but the same method as described above can be applied even if the number of stages is increased to three or four.

In addition, it is apparent from the above description that the present invention is not limited to the case where a segment of a specific division mode as shown in the drawing is targeted, and can be applied regardless of the segment division mode.

[Effects of the Invention] According to the present invention, it is possible to easily provide a floor plate to be a segment storage space and a working floor when assembling a segment by the upper erector without complicating the main body structure of the shield machine, and During segment assembly by the elector, the floor plate can be easily moved to a position where it does not interfere with the segment being assembled by the floor plate retracting operation and the arm turning operation by the floor plate raising / lowering means of the lower erector. In addition, the lower erector can be used to assemble segments with the floor slab retracted to the lower tier while the floor slab is held at the position opposite to the segment gripper with respect to the erector rotation center of the lower erector. This eliminates the need for carrying out to a place or exchanging floorboards between the upper and lower erectors, and can safely and efficiently construct a lining ring in a vertical multiple shield tunnel.

[Brief description of the drawings]

1 (a) to 1 (m) are diagrams of a segment assembling process in one embodiment of the present invention, FIG. 2 is a longitudinal sectional view of a shield machine used in the present embodiment, FIG. 4 is an enlarged view of the erector part on the right side, FIG. 5 is a cut-away side view of the upper erector, FIG. 6 is a sectional view taken along line AA of FIG. 5, and FIG.
FIG. 8 is a sectional view taken along line C-B of FIG. 4, FIG. 9 is a cut-away side view of the lower erector, and FIG. 10 is DD of FIG.
FIG. 11 is a sectional view, FIG. 11 is a view taken in the direction of the arrow E in FIG. 4, FIG. 12 is a plan view of the floor plate, FIG. 13 is a partially enlarged view thereof, and FIG.
F sectional view, FIG. 15 is a sectional view taken along line GG of FIG. 13, FIG. 16 is a view showing a segment assembling shape of the present embodiment, and FIG. is there. 1 Shield body, 7 Upper erector, 8 Lower erector, 23 Slewing ring, 24, 24 'Arm, 26
...... hanging beam, 30 ... segment gripper, 34 ... floorboards, 37, 37 '... floor lifting _{jack, A, B, K 1,} K 2 ...... segments.

 ──────────────────────────────────────────────────続 き Continuing on the front page (72) Inventor Eiji Yamazaki 650, Kandachi-cho, Tsuchiura-shi, Ibaraki Hitachi Construction Machinery Co., Ltd. Heavy Industry Co., Ltd., Nagoya Plant

Claims (2)

(57) [Claims] 1. A pseudo-circular portion connected vertically in a plurality of stages,
The shield tunnel lining ring is constructed by assembling segments into a vertically connected multiple-stage shape using erectors installed at each stage at the rear of the shield excavator to form a vertical multiple shield tunnel lining ring. A construction method, wherein a working floor plate arranged to be able to ascend and descend to a lower erector is extruded between upper and lower tiers, a segment is supplied on this floor plate, and after holding the segment with an upper erector, the floor plate is A method for constructing a lining ring for a shield tunnel, comprising retreating to a lower stage and assembling an upper segment. 2. A quasi-circular portion connected vertically in a plurality of stages,
The shield tunnel lining ring is constructed by assembling segments into a vertically connected multiple-stage shape using erectors installed at each stage at the rear of the shield excavator to form a vertical multiple shield tunnel lining ring. A construction apparatus, wherein a lower erector is provided with elevating means on a side opposite to the segment gripping part with respect to the center of rotation thereof, and is provided with a work floor plate which is coupled to the elevating means and is movable between upper and lower stages. A lining ring construction apparatus for a shield tunnel.