JP2009127322A - Curing method of lining concrete and curing member thereof - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a curing method of lining concrete which enables installation work to be remarkably more easily carried out than a conventional one, has good field workability, reduces cost, and has extremely excellent practicality. <P>SOLUTION: The curing method is the one for lining concrete placed on the wall surface of a tunnel T. Curing members 4 each having a sheet material 3 arranged at timbering material 2 formed by combining a longitudinal member 5 and a horizontal member 6 and curved in an arch shape along the arch part 1a of the lining concrete 1 and having flexibility are disposed on the surface 12 of the arch part 1a. The lining concrete 1 is cured by pressing the sheet materials 3 to the lining concrete 1 by the return elasticity of the timbering materials 2. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

  The present invention relates to a method for curing lining concrete and a curing member.

  As a method of curing the lining concrete placed on the tunnel wall surface, it is common to cover it with a water-retaining sheet or maintain a wet state by watering, but the water-retaining sheet is held in close contact with the arch portion of the lining concrete. It is difficult, and it is necessary to perform watering frequently, and both methods have problems.

  Therefore, for example, Patent Document 1 discloses a water retention sheet that is in close contact with the surface of the lining concrete, a flexible plate that has the same area as the water retention sheet that holds the water retention sheet, and a horseshoe-shaped flexibility that holds the flexible plate. A curing device is described that is configured with a pipe and holds the water-retaining sheet in close contact by pressing the flexible plate and the water-retaining sheet against the surface of the lining concrete by the return elasticity of the horseshoe-shaped flexible pipe. .

  However, since the curing device according to Patent Document 1 presses the water retaining sheet with a flexible plate having approximately the same area as the water retaining sheet, a very large flexible plate is required, and the flexible pipe that holds the flexible plate is used. However, a large-diameter material is required, so that the supporting material becomes excessive and heavy, and the installation work becomes complicated accordingly. Furthermore, since these water-retaining sheets and supporting materials are assembled on the surface of the lining concrete in a narrow tunnel, the installation work is troublesome in this respect as well, and the workability at the site is remarkably inferior and the practicality is extremely poor.

JP-A-10-102774

  The present invention has been made in view of the current situation as described above, and by using a curing member that does not need to be assembled directly on the surface of the lining concrete with a very simple configuration, installation work is significantly easier than before. It is possible to provide a curing method and a curing member for lining concrete that can be performed, have excellent workability on site, are inexpensive and extremely excellent in practicality.

  The gist of the present invention will be described with reference to the accompanying drawings.

  A method for curing lining concrete placed on the wall surface of a tunnel T, which is a combination of a longitudinal member 5 and a transverse member 6 and is curved in an arch shape along the arch portion 1a of the lining concrete 1 A curing member 4 provided with a sheet material 3 is provided on the surface 12 of the arch 1a on the supporting material 2 having flexibility, and the sheet material 3 is pressed against the lining concrete 1 by the return elasticity of the supporting material 2. The present invention relates to a curing method for lining concrete, characterized in that the lining concrete 1 is cured.

  Further, in the curing method for lining concrete according to claim 1, the curing member 4 is provided with a rectangular sheet material 3 on a ladder-shaped support material 2 in which the vertical members 5 are connected to each other by the horizontal member 6. The present invention relates to a curing method for lining concrete, which is characterized by being a thing.

  Moreover, in the curing method of the lining concrete according to any one of claims 1 and 2, the lining concrete is characterized in that a flexible tubular body is adopted as the vertical member 5 and the horizontal member 6. This is related to the curing method.

  Moreover, in the curing method of the lining concrete of any one of Claims 1-3, the same material and pipe diameter as the said vertical member 5 and the said horizontal member 6 were employ | adopted. It relates to a concrete curing method.

  The lining concrete curing method according to any one of claims 1 to 4, wherein the vertical member 5 or the horizontal member 6 is formed by connecting a plurality of short pipes via a joint portion 7. The present invention relates to a curing method for lining concrete.

  Further, in the curing method for lining concrete according to any one of claims 1 to 5, a cover provided with an extendable mechanism 8 having an adjustable length is adopted as the vertical member 5. This is related to the curing method for engineering concrete.

  Further, in the curing method for lining concrete according to any one of claims 1 to 6, a rectangular sheet material 3 is provided on a ladder-shaped support material 2 in which the vertical members 5 are connected to each other by the horizontal members 6. A plurality of curing members 4 are arranged side by side to cure the lining concrete 1 according to the lining concrete curing method.

  Further, it is a curing method for lining concrete placed on the wall surface of the tunnel T, and a sheet material 3 is provided on the surface of the lining concrete 1, and a vertical member 5 and a horizontal member 6 are combined with the sheet material 3. A flexible support material 2 is provided that is curved in an arch shape along the arch portion 1a of the lining concrete 1 and the sheet material 3 is formed on the lining concrete 1 by the return elasticity of the support material 2. The present invention relates to a curing method for lining concrete, characterized in that the lining concrete 1 is cured by pressing.

  Further, it is a curing member that is provided on the arch portion 1a of the lining concrete placed on the wall surface of the tunnel T, and cures the arch portion 1a, and is arched along the arch portion 1a of the lining concrete 1 The support member 2 has a flexible support material 2 that can be bent and a sheet material 3 provided on the support member 2, and the support member 2 is disposed along the arch shape of the arch portion 1 a. And a curing member characterized by comprising a combination of the longitudinal member 5 and a transverse member 6 that connects the longitudinal members 5 to each other.

  The curing member according to claim 9 is a curing member characterized in that a flexible tube is adopted as the vertical member 5 and the horizontal member 6.

  Further, in the curing member according to any one of claims 9 and 10, according to the curing member, the vertical member 5 and the horizontal member 6 are made of the same material and pipe diameter. Is.

  Further, in the curing member according to any one of claims 9 to 11, a member formed by connecting a plurality of short tubes through the joint portion 7 as the longitudinal member 5 or the transverse member 6 is adopted. It concerns the curing member characterized by the above.

  The curing member according to any one of claims 9 to 12, wherein the longitudinal member 5 is provided with a telescopic mechanism 8 whose length is adjustable.

  Since the present invention is as described above, installation work can be remarkably simplified as compared with the prior art, and a method for curing lining concrete and a curing member that is excellent in field workability, cost-effective and extremely practical can be obtained. .

  An embodiment of the present invention which is considered to be suitable will be briefly described with reference to the drawings showing the operation of the present invention.

  Since the sheet material 3 is pressed against the arch portion 1a by the return elasticity of the longitudinal member 5 curved in an arch shape, no other pressing mechanism is required, and the configuration is simplified accordingly.

  In particular, since the support member 2 formed by combining the vertical member 5 disposed along the arch portion 1a and the horizontal member 6 that connects the vertical members 5 is used, the stability of the support material structure is improved by the horizontal member 6. In addition, a flexible plate having the same area as that of the water retention sheet as disclosed in Patent Document 1 is not required, and therefore an excessive and excessive support material is not required. Therefore, the transportation / installation work becomes simpler and the workability at the site is remarkably improved.

  That is, for example, after the rectangular sheet material 3 is provided on the ladder-shaped support material 2 in which the vertical members 5 are connected to each other by the horizontal member 6, the curing member 4 is manufactured, and then the curing member 4 is curved in an arch shape. When installed along the section 1a, the support material 2 and the sheet body 3 can be assembled at another location such as a site (in the tunnel T) or a factory that is not on site. Further, the thin plate-like curing member 4 assembled in the tunnel T or another place is lightweight and easy to carry. The curing member 4 is conveyed to the installation location in the tunnel, and the arch portion 1a of the lining concrete is arched. The installation work of bending along the shape can be performed very easily.

  Specific embodiments of the present invention will be described with reference to the drawings.

  The present embodiment is a curing method for lining concrete placed on the wall surface of a tunnel T, which is formed by combining a vertical member 5 and a horizontal member 6 and has an arch shape along the arch portion 1a of the lining concrete 1. A curving member 4 provided with a sheet material 3 is provided on the surface 12 of the arch portion 1a on the flexible support material 2 bent in a curved line, and the sheet material 3 is covered by the return elasticity of the support material 2 The lining concrete 1 is cured by being pressed against the concrete 1.

  Specifically, as shown in FIGS. 1 and 2, the present embodiment summarizes the lining concrete 1 cast on the wall surface of the tunnel T (sequentially placed according to the formation of the tunnel wall surface or the entire tunnel wall surface is formed. When the sheet material 3 is cured, the vertical members 5 are respectively disposed on the left and right side edges (on the surface not in close contact with the arch portion 1a) of the sheet material 3 (the heat insulating material having a predetermined thickness). At the same time, the vertical members 5 are connected to each other by the horizontal members 6, and the curing member 4 (see FIG. 3) composed of the ladder-shaped support material 2 and the rectangular sheet material 3 is attached. After a plurality of preparations are made, the plurality of curing members 4 are sequentially curved in an arch shape so as to be arranged in parallel with the arch portion 1a, and the sheet material 3 is brought into close contact with the surface 12 of the arch portion 1a by the return elasticity of the support material 2 It is to be cured. In the figure, reference numeral 1 b is the bottom of the lining concrete 1.

  The lining concrete 1 is generally composed of a bottom (invert), a side wall standing on the bottom, and a crown (arch) provided on the side wall. The part 1a is a concept including the crown and the side wall. That is, the lining concrete 1 of the present embodiment is composed of the arch portion 1a and the bottom portion 1b, and the skirt portion (connected portion with the bottom portion 1b) of the arch portion 1a is substantially perpendicular to the bottom portion 1b. A vertical wall shape or an inclined wall shape that gently spreads can be cured similarly.

  The support material 2 and the sheet material 3 are connected using a plastic mounting jig (band). Further, in this embodiment, a plurality of curing members 4 are arranged in close contact with each other (so that the vertical members 5 and the sheet materials 3 are adjacent to each other). good. In this case, the sheet material 3 is appropriately disposed between the curing members 4. Further, curing may be performed by sequentially using one curing member 4 without arranging a plurality of curing members 4 side by side.

  In this embodiment, the vertical member 5 and the horizontal member 6 are flexible pipes (pipes), and the vertical member 5 and the horizontal member 6 are the same in material and pipe diameter. In addition, as long as it has flexibility, not only a pipe (hollow member) but a solid member may be employ | adopted.

  Specifically, the vertical member 5 is formed by connecting a plurality of short pipes made of vinyl chloride via a joint portion 7 (pipe joint), and one short pipe is used as the horizontal member 6 as it is. The transverse member 6 may also be formed by connecting a plurality of short tubes via the joint portion 7. Also, other pipes such as resin materials other than vinyl chloride may be adopted as long as they are flexible materials.

  Therefore, by using the same material as the vertical member 5 and the horizontal member 6, material acquisition, diversion between members, and diversion to other uses are facilitated, and the cost is reduced accordingly. In addition, by using a pipe joint, it is possible to easily assemble the support material 2, and it is easy to handle, and further, can be expanded and reduced, and can be applied to any tunnel cross section, and can be easily stored after dismantling and removal. It becomes.

  In addition, at the positions closer to both ends in the longitudinal direction of the vertical member 5, there are provided extension mechanisms 8 that are adjustable in length.

  Specifically, as shown in FIG. 4, the bolt 9 is partially inserted into a short tube that forms the vertical member 5, and a pair of nuts 10 and washers 11 that are screwed to the bolts 9. The degree of protrusion of the bolt 9 from the short tube is adjusted by screwing the pair of nuts 10 in a relatively approaching or separating direction (by shortening or extending the exposed length of the bolt 9) and appropriately adjusting the length of the vertical member. Adjust the length. In this embodiment, a bolt / nut structure is employed, but other structures such as an air cylinder and a hydraulic cylinder may be employed.

  Therefore, the length of the vertical member 5 can be adjusted as appropriate according to the shape (arch length) of the arch portion 1a, and can be stably provided along the arch portion 1a. Moreover, it can work in the contracted state at the time of installation work, and the state in which the sheet material 3 is brought into close contact with the wall surface of the arch portion 1a can be maintained satisfactorily by extending, and the support material 2 can be stably fixed. As well as being able to cure well.

  Further, as described above, since the transverse member 6 is composed of one short tube, each curing member 4 is narrow and can be easily assembled in the tunnel (of course outside the tunnel). It is also easy to manufacture and transport in a factory etc.), and by arranging a plurality of curing members 4 in the depth direction of the arch portion 1a, it becomes possible to cope with any length of tunnel T, which is extremely workable and Excellent versatility. Furthermore, since the curing member 4 is composed of a sheet (flexible) and a flexible pipe, the curing member 4 is light in weight and can be easily assembled, transported, installed, and removed.

  Since the present embodiment is as described above, the sheet material 3 is pressed against the surface 12 of the arch portion 1a by the return elasticity of the longitudinal member 5 curved in an arch shape. Become.

  In particular, since the support member 2 formed by combining the vertical member 5 disposed along the arch portion 1a and the horizontal member 6 that connects the vertical members 5 is used, the stability of the support material structure is improved by the horizontal member 6. In addition, a flexible plate having the same area as that of the water retention sheet as disclosed in Patent Document 1 is not required, and therefore an excessive and excessive support material is not required. Therefore, the transportation / installation work becomes simpler and the workability at the site is remarkably improved.

  That is, the vertical members 5 are respectively attached to the left and right side end portions of the sheet material 3, and the vertical members 5 are connected to each other by the horizontal member 6, so that the ladder-shaped support material 2 and the rectangular sheet material 3 are formed. After the curing member 4 is manufactured, when the curing member 4 is curved in an arch shape and installed along the arch portion 1a, the support material 2 and the sheet body 3 are assembled on the site (in the tunnel T) or a factory that is not on site. Can be done in different places. Further, the thin plate-like curing member 4 assembled in the tunnel T or another place is lightweight and easy to carry. The curing member 4 is conveyed to the installation location in the tunnel, and the arch portion 1a of the lining concrete is arched. The installation work of bending along the shape can be performed very easily.

  Moreover, by suspending it on the curing member 4, it is possible to cross the lighting and the electric wire without damaging the tunnel wall surface, so that the workability is excellent. Furthermore, the curing member 4 can prevent the drop of water droplets in the water leakage section, and is excellent in versatility.

  Therefore, the present embodiment can perform installation work remarkably easily as compared with the prior art, has excellent on-site workability, low cost, and extremely excellent practicality.

It is a schematic explanatory drawing of a present Example. It is a schematic explanatory drawing which shows the use condition of the curing member which concerns on a present Example. It is a schematic explanatory exploded perspective view of the curing member which concerns on a present Example. It is an expansion schematic explanatory drawing of the expansion-contraction mechanism of the vertical member which concerns on a present Example.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Covering concrete 1a Arch part 2 Support material 3 Sheet material 4 Curing member 5 Vertical member 6 Horizontal member 7 Joint part 8 Expansion-contraction mechanism
12 surface T tunnel

Claims (13)

  A method for curing lining concrete placed on a wall surface of a tunnel, comprising a combination of a longitudinal member and a transverse member, and having a flexibility that is curved in an arch shape along the arch portion of the lining concrete A covering member is provided with a curing member provided with a sheet material on the surface of the arch portion, and the lining concrete is cured by pressing the sheet material against the lining concrete by the return elasticity of the support material. Curing method for engineering concrete.   The lining concrete curing method according to claim 1, wherein the curing member is a ladder-shaped support member in which the vertical members are connected to each other by the horizontal member, and a rectangular sheet material is provided. Curing method for lining concrete.   The lining concrete curing method according to claim 1, wherein a flexible pipe is employed as the longitudinal member and the transverse member.   The method for curing lining concrete according to any one of claims 1 to 3, wherein the vertical member and the horizontal member are made of the same material and pipe diameter. .   The lining concrete curing method according to any one of claims 1 to 4, wherein the longitudinal member or the transverse member is formed by connecting a plurality of short pipes via a joint portion. Curing method for lining concrete.   The method for curing lining concrete according to any one of claims 1 to 5, wherein the longitudinal member is provided with a length-adjustable extension mechanism. Method.   The curing method for lining concrete according to any one of claims 1 to 6, wherein a plurality of curing members are formed by providing a rectangular sheet material on a ladder-like support material in which the vertical members are connected by the horizontal members. A method for curing lining concrete, wherein the lining concrete is cured side by side.   A method of curing lining concrete placed on a wall surface of a tunnel, wherein a sheet material is provided on the surface of the lining concrete, the sheet material is combined with a vertical member and a horizontal member, and an arch of the lining concrete A flexible support material curved in an arch shape along the portion is provided, and the sheet material is pressed against the lining concrete by the return elasticity of the support material, and the lining concrete is cured. Curing method for lining concrete.   A curing member provided on the arch portion of the lining concrete placed on the wall surface of the tunnel and curing the arch portion, and is flexible so that it can be bent in an arch shape along the arch portion of the lining concrete. And a sheet material provided on the support material, and the support material is a combination of a vertical member disposed along the arch shape of the arch portion and a horizontal member connecting the vertical members. Curing member characterized by being configured.   The curing member according to claim 9, wherein a flexible tube is adopted as the vertical member and the horizontal member.   The curing member according to any one of claims 9 and 10, wherein the vertical member and the horizontal member are made of the same material and pipe diameter.   The curing member according to any one of claims 9 to 11, wherein the longitudinal member or the transverse member is formed by connecting a plurality of short tubes via a joint portion. Element.   The curing member according to any one of claims 9 to 12, wherein the longitudinal member is provided with a telescopic mechanism whose length is adjustable.

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