JP2009215720A - Case body guiding device and guiding method for case body - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a case body guiding device and a guiding method for a case body for preventing end faces on connection sides of one case body and the other case body to be mutually connected from being deviated from each other without fail and connecting these case bodies precisely. <P>SOLUTION: This case body guiding device is provided with guide rails 5 provided in a connection part of one end part of the case body 4 on one side provided and fixed in a gallery 2 and the other end part of the case body 4 on the other side moving in the gallery 2 toward the case body 4 on one side among a plurality of case bodies 4 constituting an underground structure 3 crossing a part below upper part facility above the ground 1, attached to connection part sides on both of side faces of the case body 4 on one side, respectively, and protruding in the reverse direction to the direction of moving of the case body 4 on the other side and buried members 6 attached to connection part sides on both of side faces of the case body 4 on the other side while being buried into both of side faces of the case body 4 on the other side, respectively, and abutted on inner side faces of the guide rails 5. The guiding method for the case body 4 by use of this case body guiding device is provided. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

  The present invention relates to a box guide device and a box guide method for connecting a plurality of boxes for constructing a tunnel-like underground structure that traverses the lower part of an upper facility above the ground.

As a method of constructing a tunnel-like underground structure that traverses the ground below the upper facilities such as railways and roads, for example, a tow jack is attached to the rear part of a plurality of boxes constituting the underground structure, A technique is known in which a plurality of boxes are towed from a starting side to a reaching side by a pulling member such as a PC steel wire using the installed and fixed reaction force box as an anchor (for example, see Patent Document 1).
JP 05-071292 A

By the way, as in Patent Document 1, when a plurality of boxes are towed from the start side to the arrival side by a traction member, the plurality of boxes are connected to the reaction force box installed and fixed on the arrival side. In some cases, for example, due to variations in tensile force, end surfaces on the connection side of the box and reaction box located at the top of the plurality of boxes may be displaced in the width direction.
However, since these multiple boxes and reaction force boxes are heavy objects made of, for example, reinforced concrete, when the end surfaces on the connection side of both boxes connected in this way are displaced in the width direction, There was a problem that it was difficult to correct the deviation.

  An object of the present invention is to provide a box guide device for a box and a box guide capable of accurately connecting the end faces on the connection side of the one box and the other box to be connected and capable of connecting with high accuracy. It aims to provide a method.

In order to solve the above problems, the invention described in claim 1 is a box guide device, and constructs a tunnel-like underground structure that traverses the lower part of the upper facility, which is a facility installed above the ground. Among the plurality of boxes to be made, one end of one box that is installed and fixed at a predetermined location in a tunnel formed on the ground below the upper facility, and toward the one box It is provided at the connection part with the other end of the other box that travels in the tunnel,
A guide rail that is attached to each of the connecting portions on both side surfaces of the one box, and that protrudes in a direction opposite to the traveling direction of the other box;
An embedded member that is attached to both side surfaces of the other box so as to be embedded on both side surfaces of the other box and that abuts against the inner surface of the guide rail is provided on both side surfaces of the other box. It is characterized by that.

  According to a second aspect of the present invention, in the box guide device according to the first aspect, the guide rail is attached to a lower end of the one box, and the embedded member is the other box. It is attached to the lower end of the body.

A third aspect of the present invention is a box guide method, wherein the other box that travels in the tunnel toward the one box by using the box guide device according to claim 1. When guiding the direction of travel,
In advance, the one box is installed and fixed on the bottom surface of the mine shaft, and a starting base is installed for advancing the other box. Further, the traveling direction of the other box is set on the starting base. And a plurality of jacks that are spaced apart by a predetermined distance between the guide rails for travel provided along the guide rails and both side walls of the tunnel,
Thereafter, the one box is installed and fixed at a predetermined position on the start table, and the other box is moved along the traveling guide rail and toward the one box. Go on the table,
When the one end of the one box and the other end of the other box are approaching, the embedded member is slid along the inner surface of the guide rail attached to the one box. The traveling direction of the other box is guided.

According to the present invention, a guide rail that is attached to each side of the connection portion on both sides of one box and projects in the direction opposite to the traveling direction of the other box, and a connection between both sides of the other box It is attached to each side so as to be embedded on both side surfaces of the other box, and has an embedded member that abuts against the inner surface of the guide rail. When the box is advanced and the one box and the other box approach each other, the embedded members attached to the connecting portions on both sides of the other box are attached to both sides of the one box. These one box and the other box can be connected while sliding along the inner side surface of the guide rail attached to the connecting portion side of the surface. Thus, when one box is connected to the other box, the other box can be accommodated between the guard rails attached to both sides of the one box. It is possible to reliably prevent the end faces on the connection side of the box from being displaced and to connect with high accuracy.
In addition, since the embedded members that are in contact with the inner surface of the guide rail are respectively attached to the connecting portions on both side surfaces of the other box, the connecting portions on both side surfaces of the one box are attached by these embedded members. Guide rails attached to the sides can be received. Thereby, when connecting one box and the other box, it is possible to reliably prevent the side rails of the other box from being damaged by the guide rails of the one box.

  Embodiments of the present invention will be described below with reference to the drawings.

  FIG. 1 shows a plurality of boxes 4 for constructing a tunnel-like underground structure 3 that traverses the lower part of the upper facility, which is a facility installed above the ground 1. Among these, one box 4 is installed and fixed at a predetermined location in the tunnel 2 formed in the ground 1 below the upper facility, and the other box 4 is attached to the one box 4. The inside of the mine shaft 2 can be advanced.

  And the box guide apparatus of this Embodiment is provided in the connection part of the one end part of one box 4 and the other end part of the other box 4 among the plurality of boxes 4. .

In addition, although not shown in figure, the upper facility of this Embodiment is tracks, such as a train, and is temporarily removed during construction of these box 4.
Further, as shown in FIG. 3, the underground structure 3 is constructed by connecting the plurality of boxes 4 to each other, and has a tunnel-like shape that traverses the lower part of the track that is the upper facility. It is a road facility.

As shown in FIGS. 2 and 3, the mine shaft 2 is formed at a location where the upper facility is removed so as to cross the upper facility.
The mine shaft 2 is formed by placing a plurality of sheet piles 2a on the ground 1 in advance so as to surround the four sides of the mine shaft 2, and excavating a portion surrounded by the sheet piles 2a. That is, these sheet piles 2 a are peripheral walls of the mine shaft 2.

  Moreover, since the said sheet pile 2a is being fixed to the said ground 1 by driving the anchor pile 2b toward the ground 1 from the surface of this sheet pile 2a, an installation state becomes a strong and stable thing, and the ground 1 Can be reliably prevented.

Furthermore, on the bottom surface of the tunnel 2, the one box 4 is installed and fixed, and a starter 20 for the other box 4 to travel is installed.
As shown in FIGS. 4 and 5, the starting stand 20 includes a traveling guide rail 21 provided along the traveling direction of the other box 4, and both the traveling guide rail 21 and both sides of the mine shaft 2. A plurality of jacks 22 that are spaced apart from each other by a predetermined distance are installed.
Further, as shown in FIG. 6, the starter 20 includes a plurality of rail steels 23 embedded in the surface layer portion of the starter 20.

As shown in FIGS. 4 and 5, the advancing guide rail 21 is formed in an elongated shape along the length direction of the start table 20 and is placed on the surface of the start table 20. Installed. That is, it comes into contact with the lower end of the other box 4.
In addition, in this Embodiment, although H steel is used as this guide rail 21 for progress, it is not restricted to this.

In addition, a cushioning material 21a located between the advancing guide rail 21 and the other box 4 is attached to the advancing guide rail 21 so that when the other box 4 is advanced. The generated impact and vibration can be reduced.
In addition, in this Embodiment, although a foamed polystyrene is used as this buffer material 21a, it is not restricted to this.

  As shown in FIG. 5, the plurality of jacks 22 are provided between a jack main body 22 a and the jack main body 22 a and a sheet pile 2 a that is a wall of the tunnel 2, and the jack main body along the length direction. A plurality of H steels 22b to which a plurality of 22a are fixed are provided between the jack body 22a and the advancing guide rail 21, and a predetermined gap is provided between the advancing guide rail 21 and the giraffe jack 22a. And a cut beam material 22c.

In addition, although the giraffe jack is used in this Embodiment as the said jack main body 22a, it is not restricted to this.
Moreover, H steel is used for the said beam member 22c, One end of this beam member 22c is being fixed to the said guide rail 21, and the other end is being fixed to the said jack main body 22a.

As shown in FIG. 4, the rail steel 23 is formed in an elongated shape along the length direction of the start table 20, and a plurality of the rail steels 23 are provided in parallel along the width direction of the start table 20. Yes.
And as shown in FIG. 6, it is embedded in the surface layer part of the said starting stand 20, and it is in the state which exposed one surface on the surface of the said starting stand 20, On this exposed surface, for example, lubricant 23a Is preferable because the other box 4 is likely to proceed.
In addition, although H steel is used as this rail steel 23 in this Embodiment, it is not restricted to this.

On the other hand, as shown in FIGS. 1 to 3, the box 4 is made of, for example, reinforced concrete, and is durable enough to support at least the weight of a railroad that is an upper facility or a train when passing through the railroad. It has.
The box 4 is formed so as to penetrate along the direction in which the plurality of boxes 4 are arranged in parallel, and a central through hole serves as a roadway portion 4a in which a roadway is formed. The through holes located on both sides of 4a are sidewalk portions 4b where sidewalks are formed.

Note that the upper facility is installed above the box 4 arranged at the center among the boxes 4 shown in FIG. 3 so as to be along the width direction of the box 4.
In addition, after the plurality of boxes 4 are connected, waterproofing is applied to the joints between the plurality of boxes 4 so that the waterproof function can be enhanced.

As described above, the box guide device of the present embodiment is connected to a connection portion between one end of one box 4 and the other end of the other box 4 among the plurality of boxes 4. Is provided.
As shown in FIGS. 1 to 3, the box guide device is attached to the connection portion side on both side surfaces of one box 4 among the plurality of boxes 4 and the other box 4. The guide rail 5 that protrudes in the direction opposite to the traveling direction of the other box 4 is embedded in both side surfaces of the other box 4 on the connection portion side of both sides of the other box 4 among the plurality of boxes 4. In this way, each of them is attached, and an embedded member 6 that abuts against the inner surface of the guide rail 5 is provided.

  The guide rail 5 is, for example, a rectangular iron plate, and is attached so that about half of the length direction protrudes from the end face on the connection side of the one box 4. The projecting dimensions of both guide rails 5 are substantially the same.

The embedding member 6 is, for example, a rectangular iron plate, and is attached so as to be fitted into embedding concave portions formed on the connection portion side on both side surfaces of the other box 4. The outer surface of the embedded member 6 and the both side surfaces of the other box 4 are flush with each other, and the embedded member 6 seems to be embedded on both side surfaces of the other box 4. It is in a state.
That is, the embedding recesses into which these embedding members 6 are fitted are formed by cutting the connecting portion side of both side surfaces of the other box 4 by the same size as the embedding member 6. It becomes.

  According to such a box guide device, the other box 4 is advanced toward the one box 4, and when the one box 4 and the other box 4 approach, The one box 4 and the other box 4 can be connected while sliding the insert member 6 along the inner surface of the guide rail 5.

The area of the outer surface of the embedded member 6 is preferably at least equal to or larger than the area of the inner surface of the protruding portion of the guide rail 5.
Moreover, it is preferable to apply a lubricant to at least one of the inner surface of the protruding portion of the guide rail 5 and the outer surface of the embedded member 6.

  Further, as shown in FIG. 1, the guide rail 5 is attached to the lower end of the one box 4, and the embedded member 6 is attached to the lower end of the other box 4. ing.

  That is, for example, when the other box 4 is advanced, the upper box 4 is swayed more at the upper end than at the lower end due to the state of the ground 1 such as an inclination or a step, the traveling speed, and the like. It is easily affected by tilt and tilt. Therefore, by providing the guide rail 5 and the embedded member 6 at the lower end portions of the one and the other box 4, it is possible to reduce the influence of shaking, inclination, etc. as compared with the upper end portion. It is easy to guide the connection between the one and the other box 4 by the guide rail and the embedded member, and the one box 4 and the other box 4 can be connected with high accuracy.

  Next, the construction method of the underground structure 3 including the guide method of the box 4 using the box guide apparatus of the present embodiment will be described.

  In order to construct the underground structure 3, first, the ground 2 around the upper facility is excavated to form the mine shaft 2 while leaving the upper facility without being removed. At this time, as described above, the sheet pile 2a is first placed, and then the ground 1 in the portion surrounded by the sheet pile 2a is excavated.

Although not shown, the ground 1 where the upper facility is installed is also surrounded by the sheet pile 2. And since the ground 1 of the part in which this upper facility is installed is left so that it may be pinched | interposed into the said sheet pile 2a, the sheet pile which opposes this ground 1 so that this ground 1 may not collapse | fall 2a is held by a tie rod or the like.
The sheet pile 2 a is fixed to the ground 1 by placing an anchor pile 2 b from the surface of the sheet pile 2 a toward the ground 1.

  Subsequently, the start stand 20 is installed on the bottom surface of the mine shaft 2 surrounded by the sheet pile 2a. At this time, the portion of the ground 1 where the upper facility is installed is left so as to be sandwiched between the sheet piles 2a, so that the portion of the ground 1 where the upper facility is installed should be avoided. The start stand 20 is installed.

Subsequently, among the plurality of boxes 4, the box 4 positioned at the right end in FIG. 2 is installed and fixed at a predetermined position of the starter 20 in the mine shaft 2.
Here, the predetermined location is the arrival side of the starting stand 20 in the traveling direction. That is, among the plurality of boxes 4, the box 4 positioned at the center and the left end in FIG. 2 travels from the start side to the arrival side of the start base 20 (from left to right in FIG. 2). ). Therefore, the predetermined place where the right-end box 4 is installed and fixed is the same place as the position where the box 4 located at the right end of the underground structure 3 after construction shown in FIG. 3 is installed. .
At this stage, as described above, since the ground 1 of the portion where the upper facility is installed is left in the mine shaft 2, the box 4 at the right end is more than the ground 1. Is also arranged on the arrival side of the start stand 20.

  The right end box 4 can be fixed by, for example, connecting the bottom of the right end box 4 and the starting base 20 with a plurality of bolts or the like, or connecting the bottom of the right end box 4 to the ground. There are various methods such as forming a base portion that can be embedded in 1 and fixing the right end case 4 by embedding the base portion of the right end case 4 in the ground 1. The present invention can be changed as appropriate without departing from the spirit of the present invention.

Subsequently, among the plurality of boxes 4, the boxes 4 located at the center and the left end are installed without being fixed at predetermined positions on the start table 20 in the tunnel 2.
Here, the predetermined location is the start side of the start platform 20 rather than the ground 1 where the upper facility is installed.

  The guide rail 5 and the embedded member 6 may be previously attached to the box 4 at a factory or the like, the right-side box 4 is installed and fixed on the start table 20, and the center and It may be retrofitted before the leftmost box 4 is advanced.

  As shown in FIGS. 1 to 3, the guide rail 5 is attached to one end of the right end box 4 in the right end box 4. The central box 4 has a guide rail 5 attached to one end of the central box 4 and an embedded member 6 attached to the other end. Further, the embedded member 6 is attached to the left end box 4 at the other end of the left end box 4.

Subsequently, the upper facility is removed, and the ground 1 on which the upper facility has been installed is excavated. And the part of the starting base 20 which fills this space | interval is installed between the said starting bases 20 divided by the ground 1 in which the said upper facility was installed, and the starting base 20 is completed.
The starting stand 20 is also provided with the advancing guide rail 21 and a plurality of jacks 22.

After the starter 20 is completed, the plurality of boxes 4 are connected to each other by a towing device 7 so as to be towable.
That is, as shown in FIG. 2, first, a PC steel wire 7 a is passed through the bottom of the plurality of boxes 4 along the traveling direction of the center and left end boxes 4, so that the plurality of boxes 4 Connect them together.
Then, a traction jack 7b is attached to the rear end surface opposite to the connection side end surface of the box 4 at the right end, and the traction jack 7b is connected to the PC steel wire 7a.

Further, an intermediate push jack 7c is attached between the central box 4 and the left end box 4 and the intermediate push jack 7c is connected to the PC steel wire.
This intermediate pushing jack 7c controls whether the traction force by the towing jack 7a is transmitted or not transmitted to the PC steel wire 7a in the portion located behind the intermediate pushing jack 7c in the traveling direction. Can do. Thereby, the central box 4 and the left end box 4 can be alternately towed one by one by the towing jack 7a.
Note that the method of alternately pulling the central box 4 and the leftmost box 4 one by one is not limited to the method using the intermediate push jack 7c, but various other jacks. May be used.

  Further, a fixing tool 7d is attached to the rear end face opposite to the connection-side end face of the box 4 at the left end, and the fixing tool 7d is connected to the PC steel wire 7a. Since the PC steel wire 7a can be fixed to the rear end face of the left end box 4 by the fixing tool 7d, the left end box 4 can be pulled by the tow jack 7b.

In order to tow the central and left end box 4 by the towing device 7, the center box 4 is first towed by towing the PC steel wire 7a by the towing jack 7b. At this time, the middle push jack 7c is controlled so that only the central box 4 is advanced by a predetermined distance, and the left box 4 is kept stationary.
After only the central box 4 is advanced by a predetermined distance in this way, the center push jack 7c is controlled to advance only the left end box 4 by a predetermined distance, and the central box 4 is advanced. The body 4 is kept stationary.
By repeating such a process, the central box 4 and the leftmost box 4 are gradually advanced from the start side of the starter 20 to the arrival side toward the rightmost box 4.

Then, the central box 4 is advanced toward the right end box 4, and when the right end box 4 and the central box 4 approach each other, the connection of both side surfaces of the central box 4 is performed. While the embedded members 6 respectively attached to the partial sides are slid along the inner side surfaces of the guide rails 5 respectively attached to the connecting portion sides on both side surfaces of the right end box 4, these right end boxes 4 And the central box 4 can be connected.
At this time, the box 4 at the right end is the one box 4, and the center box 4 is the other box 4.

On the other hand, when the left end box 4 is advanced toward the center box 4 connected to the right end box 4 and the center box 4 and the left end box 4 approach each other, the left end The embedded members 6 respectively attached to the connection part sides on both side surfaces of the box 4 are slid along the inner side surfaces of the guide rails 5 respectively attached to the connection part sides on both side surfaces of the central box 4. The center box 4 and the leftmost box 4 can be connected to each other.
At this time, the central box 4 is the one box 4, and the leftmost box 4 is the other box 4.

  Note that the central and left end boxes 4 travel along the traveling guide rails 21 installed on the start table 4. As a result, when the box 4 at the center and the left end are connected to one box 4, the traveling direction is not greatly shifted in the course of the previous stage guided by the box guide device. The guide function of the box guide device can be effectively enhanced. Therefore, the connection between the plurality of boxes 4 can be easily guided by the box guide device, and can be guided with higher accuracy.

In this way, the plurality of boxes 4 can be connected to each other to construct the underground structure 3 as shown in FIG.
After the construction of the underground structure 3, the removed upper facility is reconstructed above the underground structure 3 so that the upper facility can be used, and road construction continuous to the underground structure 3 is performed. To do.

  In the present embodiment, the upper facility 3 is temporarily removed to construct the underground structure 3. However, the present invention is not limited to this. For example, the upper facility 3 may be crossed below the upper facility. Alternatively, a pipe roof or a box roof may be temporarily installed as a protective work, and the underground structure 3 may be constructed below the protective work without removing the upper facility.

According to the present embodiment, the guide rail 5 that is attached to the connection portion side on both side surfaces of the one box 4 and projects in the direction opposite to the traveling direction of the other box 4, and the other box An embedded member 6 that is attached to both side surfaces of the other box 4 so as to be embedded in both side surfaces of the other box 4 and abuts against the inner surface of the guide rail 5. Therefore, when the other box 4 is advanced toward the one box 4 and the one box 4 and the other box 4 approach each other, both side surfaces of the other box 4 are While the embedded members 6 respectively attached to the connecting portion sides of the one box 4 are slid along the inner side surfaces of the guide rails 5 respectively attached to the connecting portion sides on both side surfaces of the one box 4, Connect the body 4 and the other box 4 It can be.
Thus, when the one box 4 and the other box 4 are connected, the other box 4 is connected between the two guard rails 5 and 5 attached to the one box 4 on both side surfaces, respectively. Therefore, it is possible to reliably prevent the displacement of the end faces on the connection side of the one and the other box 4 and to connect with high accuracy.

  Further, since the embedded members 6 that are in contact with the inner surface of the guide rail 5 are respectively attached to the connecting portion sides of the both side surfaces of the other box 4, the one box is used by these embedded members 6. The guide rail 5 attached to the connection part side of the both sides of the body 4 can be received. Accordingly, when connecting the one box 4 and the other box 4, it is ensured that the guide rails 5 of the one box 4 damage both side surfaces of the other box 4. Can be prevented.

It is a perspective view which shows one and the other box with which the box guide apparatus of this invention was attached. The construction procedure of an underground structure is shown, (a) is a side view, (b) is a plan view. The construction procedure of an underground structure is shown, (a) is a side view, (b) is a plan view. It is a top view which shows the start stand installed in the tunnel. It is an enlarged view which shows the guide rail and jack for advancing installed in the start stand shown in FIG. It is an enlarged view which shows the rail steel embedded in the start stand shown in FIG.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Ground 2 Tunnel 3 Underground structure 4 Box 5 Guide rail 6 Embedded member 7 Towing device

Claims (3)

Among a plurality of boxes for constructing a tunnel-like underground structure that traverses the lower part of the upper facility, which is a facility installed on the upper part of the ground, a predetermined in a tunnel formed on the ground below the upper facility. Is provided at a connecting portion between one end of one box that is installed and fixed at the location and the other end of the other box that travels in the tunnel toward the one box,
A guide rail that is attached to each of the connecting portions on both side surfaces of the one box, and that protrudes in a direction opposite to the traveling direction of the other box;
An embedded member that is attached to both side surfaces of the other box so as to be embedded on both side surfaces of the other box and that abuts against the inner surface of the guide rail is provided on both side surfaces of the other box. A box guide device characterized by that.   The box according to claim 1, wherein the guide rail is attached to a lower end portion of the one box, and the embedded member is attached to a lower end portion of the other box. Body guide device. When using the box guide device according to claim 1 to guide the traveling direction of the other box that travels in the tunnel toward the one box,
In advance, the one box is installed and fixed on the bottom surface of the mine shaft, and a starting base is installed for advancing the other box. Further, the traveling direction of the other box is set on the starting base. And a plurality of jacks that are spaced apart by a predetermined distance between the guide rails for travel provided along the guide rails and both side walls of the tunnel,
Thereafter, the one box is installed and fixed at a predetermined position on the start table, and the other box is moved along the traveling guide rail and toward the one box. Go on the table,
When the one end of the one box and the other end of the other box are approaching, the embedded member is slid along the inner surface of the guide rail attached to the one box. A method for guiding a box, wherein the traveling direction of the other box is guided.

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