JPH03110300A - Method and apparatus for constructing lining ring of shield tunnel - Google Patents

Abstract

PURPOSE:To construct a vertical, mulriple shield tunnel with high efficiency by a method in which when assembling segmesnts by an upper erector provided on the rear of a shield excavator, floor panels are formed in a manner that they can be pushed out or drawn in between stages by a lower stagse erector. CONSTITUTION:Erectors 7 and 8 for assembling upper and lower two-stage segments are set on the rear of a shield machine 1. Under the condition that a floor panel 34 is retracted from between stages, lower stage segment A is assembled, and the floor panel 34 is pushed out to a given position to asseble segment K1, A, and K2 carried on the panel 34 by an upper stage erector 7. After the assemblinhg of the segment K2, the panel 34 is restored to the given position between stages, and a segment B is carried onto the panel 34. The segment B is hung down by hangers 11 and 11' and assemgled by retracting the panel 34. The lining ring can thus be constructed safely and effectively.

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention provides a method for constructing a lining ring for a vertical multiple shield tunnel by assembling segments into a shape in which pseudo-circular parts are connected in multiple stages in the vertical direction, and Regarding equipment. [Prior Art] 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 rows of pseudo-circular parts are connected in the lateral direction. In such horizontal multiple shield tunnels, the inner bottom of the skin plate of the shield excavator is used as a segment storage area and work floor, and the erectors 40 and 40' installed in parallel inside the machine are independently operated. By operating it, the segments of each row could be assembled.

Vertical multiple shield tunnels are said to have an advantage over horizontal multiple shield tunnels in that they occupy a smaller tunnel width, but the construction technology is currently under consideration and nothing has been published.

[Problem to be solved by the invention]

For example, in the case of a double vertical shield tunnel,
As shown in Fig. 16, the arc-shaped A segment that divides the upper and lower pseudo-circular parts, the B segment that becomes the floorboard of the upper tier, and the almost V-shaped cross section that connects the groin.
The assembly of 6 segments in which one lining ring is formed by 2 K segments can be carried out using two stages of erectors, upper and lower, installed at the rear of the shield excavator, corresponding to the pseudo-circular part of each stage. Since the B segment that serves as the floor plate of the upper stage is inserted at the end of the segment assembly process, a floor plate that serves as a segment storage area and a work floor must be separately provided between the stages when assembling the segments by the upper stage erector. Moreover, this floor plate must be able to be moved to a position where it does not interfere with the segments during segment assembly.If such a movable floor plate is installed inside the shield excavator, the main body structure will be complicated and space will be taken up. There are also restrictions in terms of

SUMMARY OF THE INVENTION An object of the present invention is to provide a method for solving the above problems and safely and efficiently performing segment assembly work for constructing a lining ring for a vertical multiple shield tunnel.

[Means to solve the problem]

In order to achieve the above object, the shield tunnel lining ring construction method of the present invention assembles segments into a shape in which pseudo-circular parts are vertically connected in multiple stages to construct a lining ring for a vertical multiple shield tunnel. When assembling segments using a multi-stage erector installed at the rear of the shield excavator in correspondence with the above-mentioned multi-stage pseudo-circular section, the upper stage erector should serve as a segment storage area and work floor when assembling segments. The floor plate is held at a portion of the lower erector on the opposite side of the segment gripping portion with respect to the erector turning center via a floor plate lifting means so that it can be pushed out between the upper and lower tiers and retracted to the lower tier side. do. Further, the shield tunnel lining ring construction apparatus of the present invention is an apparatus for constructing a lining ring for a vertical multiple shield tunnel by assembling segments into a shape in which pseudo-circular parts are connected in multiple stages in the vertical direction. Multiple stages of erectors are installed at the rear of the shield excavator in correspondence with the pseudo-circular parts of the stages, and when assembling segments using the upper stage erector, the floor plate that will serve as a segment storage area and work floor is aligned with the segment relative to the erector turning center of the lower stage erector. It is characterized in that it is held at a portion on the opposite side of the gripping portion via a floor plate lifting means so that it can be pushed out between the upper and lower tiers and retracted to the lower tier side.

[Effect]

As described above, the floor plate is held at the part of the lower erector opposite to the segment gripping part via the floor plate lifting/lowering jack means, and when the upper erector is assembling the segment, the floor plate is pushed out between the upper and lower erectors. By retracting the floor plate and rotating the lower erector during segment assembly using the upper erector, the floor plate can be moved to a position where it does not interfere with the segments.

Furthermore, when assembling segments using a lower erector that does not require a floor plate, the segment can be assembled while the floor plate is held in the lower erector and retracted to the lower side.
This eliminates the hassle of transporting the floorboard to another location when not in use and transporting it again when in use. There is no need to exchange floorboards.

〔Example〕

The illustrated embodiment will be described below.

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

The cross section of the shield is similar to the segment assembly shape shown in FIG. 16, and consists of upper and lower pseudo-circular parts and a reverse arc-shaped joint part. On the front surface of the shield body 1, two rotary cutters 2 and 2' are arranged in the same plane and have the same center as the pseudo-circular part of each stage of the shield cross section. partially overlap and the cutter spokes are moved synchronously in opposite directions so as not to interfere with each other. Inside the machine, which is separated from the face by a bulkhead 3, there is a cutter drive motor 4. Earth removal screw conveyor 5
．． A propulsion shield jack 6 and the like are installed, and furthermore, two upper and lower segment assembly erectors 7.8 are installed at the rear of the shield body 1.

Figure 5 is a side view of the upper erector 7, and Figure 6 is A of Figure 5.
-A sectional view, FIG. 7 is a BB sectional view in FIG. 5, and FIG. 8 is a view taken along arrow C in FIG. 4.

As shown in these figures, the upper stage erector has a pair of arms 12 and 12', one end of which is fixed at a position symmetrical to the axis of the rotating ring 10, on the same rotating ring 10 that is immediately moved by the rotating motor 9. and a pair of lifting parts 14.14 that are guided by the guide parts 13.13' of the arms 12, 12' and are movable in parallel in a direction perpendicular to the shield axis direction.
' and is fixed to the arm 12.12' and the lifting part 14.
14' is expanded and contracted in the direction perpendicular to the shield axis direction by the jacks 15, 15' and the respective lifting parts 14.15'.
14' via a guide rod 16.16';
The slider 17.17' is movable back and forth in the shield axis direction, and the slider 1 is fixed to each lifting part 14.14'.
7.17' and the segment gripping part 1 connected thereto
8. Slide jack 19, 19 that moves 18' back and forth
', a segment steady rest 20.20' arranged on the side of the lifting part 14.14', and a segment steady rest 20.20' arranged on the side of the lifting part 14.14'.
It is equipped with a pair of independent lifting devices 11゜II' on the left and right that serve as steady rest jacks 21゜21' that extend and contract the segment steady rests 20 and 20'. A space 22 is provided between 11° and 11' for carrying the segment to each lifting position, and each lifting device 11° and 11' is provided with the functions of gripping the segment, pressing the segment, moving it back and forth, and resting it. , both single and simultaneous operation can be selected.

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

As shown in these figures, the lower stage erector 8 has a pair of arms 24., one end of which is fixed at a position symmetrical to the axis of the rotation ring 23, on a rotation ring 23 that is moved by a rotation motor 9'. 24' and a guide rod 25.25' guided by the arms 24, 24', an integral hanging beam 26 movable in a direction perpendicular to the shield axis and fixed to the arm 24.24'. a pressing jack 27, 27' that extends and contracts the hanging beam 26; a slider 29 that is supported by the hanging beam 26 via a guide rod 28° 28' and is movable back and forth in the axial direction of the shield; and a slider 29 fixed to the hanging beam 26. a slide jack 31 for moving the slider 29 and the segment gripping part 30 connected thereto back and forth, segment steady rests 32 and 32' disposed at both ends of the suspension beam 26, and fixed to the suspension beam 26; Equipped with a single lifting device consisting of steady rest jacks 33 and 33' that extend and retract the segment steady rest devices 32 and 32', and this lifting device has the functions of gripping the segment, moving back and forth with one press, and steady rest. It is something that has been set. Further, a floor plate 34 that serves as a segment storage area and a work floor when assembling segments by the upper erector 7 is held at a portion of the lower erector 8 on the opposite side of the segment gripping portion 30 with respect to the erector rotation center as follows. It is.

12 is a plan view of the floor plate 34, FIG. 13 is a partially enlarged view thereof, FIG. 14 is a sectional view taken along line FF in FIG. 13, and FIG. 15 is a sectional view taken along line GG in FIG. 13.

As shown in FIGS. 4, 9, and 12 to 15, a floor plate 34 made of rectangular steel frames has a pair of guide rods 35, 35 protruding vertically from one side thereof.
', and this guide rod 35.35' is provided on the hanging beam 26 side of the lower erector 8.
It is inserted into the hollow portion of the guide rod 5' from the side opposite to the segment gripping portion 30, and is slidable in a direction perpendicular to the shield axis direction using the inner surface of the hollow portion of the guide rod 25 and 25' as a guide. A pair of joint fittings 36.36' are fixed to the floor plate 34, and a floor plate lifting jack 37.37 is attached to the joint fitting 36.36' and the arm 24.24' of the lower erector 8 as a means for lifting the floor plate. ' rod tip 37a, 3
7a' are connected by pins 38 and 38', respectively,
The floor plate 34 can be pushed out between the upper and lower tiers or retracted to the lower tier side by expanding and contracting the floor plate lifting jacks 37 and 37'.

The vertical dimension a of the floorboard 34 is made slightly smaller than the width dimension in FIG. 16 (the distance between the two K I r K segments that connect the upper and lower tiers), and the lateral dimension is approximately equal to the segment width W shown in FIG. 2. do.

Next, the segment assembly procedure will be explained with reference to FIG. The segments are A and B as shown in FIG.

Consisting of four types of segments: K I + K 2, one segment has a V-shape with long wings, and two segments have a V-shape with short wings, and by swapping the right and left segments for each ring, the A segment and K I + K Assemble the two segments in a staggered arrangement in the shield axis direction by shifting the joint positions.

In FIG. 1, the hatched portions of the segments indicate completed assembly, and the unhatched portions indicate incomplete assembly, and the assembly progresses 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 lifting jacks 37, 37' are retracted, and the floor plate 34 is held in a position opposite to the segment gripping portion 30 of the lower stage erector 8 in a state where it is retracted from between the stages.

After completing the assembly of the lower A segment, move the arm 24 of the lower erector 8 until the floor plate 34 is on top, as shown in (b).
．． 24' and extend the floor plate lifting jack 37°37' to move the floor plate 34 from the lower erector 8 to the upper erector 7.
push towards.

(c) shows a state in which the segment is carried onto the floor plate 34 that has been pushed out to a predetermined position between the stages, and is held by the left lifting device 11 of the upper stage erector 7.

(d) and (e) are the left lifting device 1 of the upper erector 7.
1 is individually operated to assemble one segment, and at the same time, the floor plate 34 is retracted by the floor plate lifting jack 37, 37' of the lower erector 8, and the arm 24, 24' is rotated. 1. During assembly, the floorboard 34 is moved to a position where it does not interfere with the segments.

(f) shows the completed assembly of the segment.

(g) shows a state in which the floor plate 34 has been returned to a predetermined position between the stages, and the upper stage A segment carried thereon is gripped by the right lifting device 11' of the upper stage erector 7.

(h) shows a state in which the upper stage A segment is assembled by independently operating the right lifting device 11' of the upper stage erector 7, and at this time, the floor plate lifting jack 37 of the lower stage erector 8 is also operated.
．． 37', the floor plate 34 is retracted and moved to a position where it does not interfere with the upper A segment being assembled.

After the assembly of the upper stage A segment is completed, as shown in (1), the floor plate 34 is returned to the predetermined position between the stages, and the two segments are carried thereon and held by the left lifting device 11 of the upper stage erector 7.

(j) and (h) are the left lifting device 1 of the upper erector 7
1 is operated alone to assemble two segments, and at the same time, the floor plate 34 is retracted by the floor plate lifting jack 37, 37' of the lower erector 8, and the arm 24, 24' is rotated. , move the floor plate 34 to a position where it will not interfere with the two segments during assembly.

After completing the assembly of K2 segment, (as shown in the figure)
4 is returned to the predetermined position between the stages, and the B segment is carried on top of it.

(,) are the left and right lifting devices 11°11 of the upper erector 7.
’ at the same time to suspend the B segment, lower erector 8
The figure shows the state in which the assembly of the B segment is completed by retracting the floor plate 34 using the floor plate lifting jacks 37 and 37'.

With the above steps, the segment assembly for one ring is completed, and the floor plate 34
is held in the retracted state by the lower erector 8 until the next segment assembly operation.

As is clear from FIG. 1, the floor plate 34 held on the opposite side of the segment gripping portion of the lower erector 8 is pushed out between the upper and lower stages by the floor plate lifting jack 37, 37', and this floor plate 34 is moved to the segment storage area and When assembling segments using the upper erector 7 and assembling the segments using the lower erector 8, the floor plate 34 is held on the lower side of the lower erector 8 on the opposite side of the segment gripping portion. By retracting the segment assembly, the series of segment assembly operations (a) to (, +1) can be carried out safely and efficiently.

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

Furthermore, it is clear from the above description that the present invention is not limited to the case where the target is a segment of a specific division style as shown in the drawings, but can be applied regardless of the segment division style.

〔Effect of the invention〕

According to the present invention, when assembling segments by the upper stage erector, a floor plate to serve as a place for storing the segments and a working floor can be easily provided without complicating the main body structure of the shield excavator, and during segment assembly by the upper stage erector. Furthermore, by pulling in the floor plate and rotating the arm by the floor plate lifting means of the lower erector, the floor plate can be easily moved to a position where it does not interfere with the segment being assembled.

In addition, the segments can be assembled using the lower erector while the floor plate is held in the part of the lower erector on the opposite side of the erector rotation center from the segment gripping part and pulled to the lower side, so the floor plate can be separated when not in use. This eliminates the trouble of transporting the floorboards to a location or exchanging floorboards between the upper and lower erectors, and allows the construction of lining rings in vertical multiple shield tunnels to be carried out safely and efficiently.

[Brief explanation of drawings]

Figures 1 (a) to (m) are segment assembly process diagrams in one embodiment of the present invention, Figure 2 is a vertical sectional view of the shield tunneling machine used in this embodiment, and Figure 3 is its left side view. Figure 4 is an enlarged view of the erector section on the right side, Figure 5 is a cutaway side view of the upper stage erector, Figure 6 is a sectional view taken along line A-A in Figure 5, and Figure 7 is an enlarged view of the erector section on the right side.
BB sectional view in the figure, FIG. 8 is a view taken along arrow C in FIG. 4, FIG. 9 is a cutaway side view of the lower erector, and FIG.
D sectional view, FIG. 11 is a view taken along arrow E in FIG. 4, FIG. 12 is a plan view of the floorboard, FIG. 13 is a partially enlarged view thereof, and FIG. FIG. 15 is a sectional view taken along line GG in FIG. 13, FIG. 16 is a diagram showing the segment assembly shape of this embodiment, and FIG. 17 is a diagram showing the procedure for assembling segments in a conventional horizontal double shield tunnel. 1...Shield body, 7...Upper erector, 8...
・Lower erector, 23... Swivel ring, 24.24'
. . . Arm, 26 . . Hanging beam, 30 . Segment gripping portion, 34 . K2...Segment.

Claims (1)

[Claims] 1. When constructing a lining ring for a vertical multiple shield tunnel by assembling segments into a shape in which a plurality of stages of pseudo-circular parts are connected in the vertical direction, a method that corresponds to the plurality of stages of pseudo-circular parts Segments are assembled using multiple stages of erectors installed at the rear of the shield excavator, and when assembling segments using the upper stage erector, the floor plate that will serve as a segment storage area and work floor is aligned with the erector rotation center of the lower stage erector. A method for constructing a lining ring for a shield tunnel, characterized in that a part on the opposite side of the gripping part is held by raising and lowering a floor plate so that it can be pushed out between the upper and lower stages and retracted to the lower stage. 2. In an apparatus for constructing a lining ring for a vertical multiple shield tunnel by assembling segments in a shape in which pseudo-circular sections are connected in multiple stages in the vertical direction, the shield tunneling machine is configured to A multi-stage erector is installed at the rear, and the floorboard that is to serve as a segment storage area and work floor when assembling segments using the upper stage erector is placed between the upper and lower stages at a location opposite to the segment gripping part of the lower stage erector with respect to the erector turning center. A device for constructing a lining ring for a shield tunnel, characterized in that the lining ring is held via a floor plate lifting means so that it can be pushed out and retracted to the lower stage side.