JP4824596B2 - Wet curing equipment for lining concrete - Google Patents

Description

  The present invention relates to a wet curing technique for tunnel lining.

  In tunnel lining work in which the excavation surface (inner wall surface) of a moat tunnel made by excavating a natural ground is covered with concrete, first, primary lining is often performed by spraying concrete onto the excavation surface of the moat tunnel. In that case, it is usual to perform secondary lining to further cover the tunnel excavation surface after the primary lining with concrete.

  In the secondary lining, concrete is placed using a so-called centle formwork. Placing here means filling concrete that has not yet solidified between the formwork and the inner wall surface of the tunnel after the primary lining.

  The cast concrete is protected inside the mold so that an external force is not applied for a predetermined time until it is cured, and the mold is removed after curing.

  Then, after the formwork is removed (hereinafter referred to as “removal”), the concrete is cured. The term “curing” as used herein is for keeping the hardened concrete in an appropriate wet state so as not to cause cracks on the surface due to drying shrinkage, and means wet curing of concrete.

  As its method, it is well known to install a plurality of spray generators on the well-side scaffold of the centre carriage to perform water spraying or to cover the concrete surface with a sheet.

  By the way, when using a spray generator, mist fills the whole pit depending on the size of the sprayed mist-like liquid (hereinafter referred to as mist) and the spray amount, resulting in poor visibility and muddying of the roadbed. Therefore, the construction must be interrupted until the field of view is open, and countermeasures against roadbed mudging must be taken.

  On the other hand, the concrete surface is covered with a sheet to prevent mist from spreading, because the inner surface of the tunnel is a circular arc, and it takes time and effort to stretch the sheet uniformly.

In addition, when using a seat, it is necessary to manufacture a spray generator and a dedicated steel cart to support the seat, and move the steel cart as the lining progresses. Must be laid. For this reason, the facilities became large and could not be said to be an effective curing means.
JP-A-7-173997

  The present invention has been made in view of the above circumstances, and the problem to be solved is at least a covering that can prevent the visibility in the tunnel from being deteriorated and the roadbed from becoming muddy during wet curing. It is to provide a wet curing apparatus for engineered concrete.

In the wet curing apparatus for lining concrete of the present invention, the concrete is placed between the formwork used in the tunnel lining work for covering the inner wall surface of the tunnel with concrete and the inner wall surface of the tunnel. Wetting of lining concrete that protects the concrete inside the formwork for a predetermined time until it hardens, and also prevents cracking due to drying shrinkage by making the concrete surface wet after curing so that the concrete surface does not crack It is a curing device and is installed behind the mold.

The wet curing apparatus according to the present invention is installed behind the mold and forms a space between the inner wall surface of the tunnel after lining which has been unframed to remove the mold after the concrete is hardened. Provided on a side portion of the sheet portion that forms the space portion , an assembly frame that forms a framework of the seat portion, a spray device that sprays the spray liquid on the space portion, and a side portion of the sheet portion that forms the space portion. possess a sealing member as extending abutment in the longitudinal direction of the tunnel, the sealing member, styrofoam material formed in a columnar shape, and / or the like seat portion abuts against the inner wall surface of the tunnel It is characterized by utilizing the side edge portion of the sheet portion for forming the space portion .

  Accordingly, the shape of the space formed by the concrete surface and the sheet portion is held by the assembly frame, and the mist that is sprayed by the spraying device in the held space eventually fills the space. . The filled mist wets the concrete surface.

Moreover, since the range which mist fills is a space part formed by the concrete surface and the sheet | seat part, Comprising: Since it does not spread more than the said space part, mist does not fill the whole pit. In other words, the mist is filled only in the space portion of the present apparatus that is wet-cured in the tunnel, but the outside of the space portion is another space that is partitioned by a sheet and has no mist.
Further, since a sealing member extending so as to contact the inner wall surface of the tunnel in the longitudinal direction of the tunnel is provided on the side portion of the sheet portion forming the space portion, mist is hardly leaked from the space portion. Therefore, sufficient wet curing can be performed.
And the said sealing member utilized the side edge part of the sheet | seat part for said space part formation so that the foaming polystyrene material formed in the column shape, or / and the sheet | seat part may contact | abut with respect to the inner wall face of the said tunnel It is desirable that

  The space is formed along a shape of at least the upper half of the cross section of the tunnel and over a predetermined range in the longitudinal direction of the tunnel, and a sufficient work area is provided below the occupied area of the apparatus in the tunnel. It is preferable that it is ensured.

  In this way, a work area with good visibility can be secured below the installation location of the present apparatus in the tunnel. Therefore, another work in the tunnel can be performed even during wet curing in the tunnel.

  Moreover, since it is only in the said space part that is in a wet state, there is no possibility that the outside of the space part in a tunnel will become a roadbed mud by mist.

  The wet curing device according to the present invention is further provided on the assembly frame, a plurality of roller devices installed on the ceiling surface of the tunnel, having rollers and arranged at predetermined intervals in the longitudinal direction of the tunnel, You may make it have a rail body which can move between roller apparatuses by a roller rotating in the state supported by the roller of a some roller apparatus.

  It is easier to install a large number of roller devices at predetermined intervals than to install rails in the tunnel. Therefore, cost reduction is possible by shortening the construction period.

  In addition, in the wet curing apparatus of the present invention, the spraying device and the blower may be provided in an assembly frame at least at a position located at the tip of the space portion among the assembly frames. By doing in this way, mist spreads from end to end in the space of the wet curing device.

  If the blower is provided at predetermined intervals in the longitudinal direction of the tunnel, it is preferable because mist is sufficiently distributed in the space.

  As an example of the case where the side edge of the sheet member is used for the sealing member, the side edge of the sheet member is positioned below the contact position where the axis included in the horizontal plane of the axis in the cross section of the tunnel is in contact with the inner wall surface of the tunnel. The one that hangs down at the position of.

  Since the foamed polystyrene material is lightweight and the side edges of the sheet member are existing, the installation is easy and the weight of the apparatus does not increase significantly.

  When the foamed polystyrene material and the side edge portion of the seat portion are applied to the sealing member, the foamed polystyrene material is disposed on the inner side of the side edge portion of the seat portion, thereby preventing double leakage of mist. As a result, the space is further sealed.

  The assembly frame is preferably made of a material having a minimum strength necessary for maintaining the space portion during wet curing. If the space can be maintained, the assembly frame can be made of bamboo or other lightweight material. By doing so, the weight of the apparatus does not increase.

  According to the wet curing apparatus for lining concrete of the present invention, it is possible to prevent the visibility in the tunnel from being deteriorated and the roadbed from becoming muddy during curing of the lining concrete.

  Further, it is easier to install the roller device at a predetermined interval than the rail laying, which contributes to shortening the construction period.

  Furthermore, since mist spreads from end to end in the space of the wet curing device, the quality of the lining concrete, and thus the tunnel, is improved.

  And since it can suppress that a mist leaks out of space by a sealing member, it can suppress further that the deterioration of the visual field in a tunnel resulting from mist and a roadbed becoming muddy are caused.

Hereinafter, exemplary forms state of moist curing apparatus lining concrete of the present invention (hereinafter, embodiments shaped state) is described with reference to the attached drawings.

FIGS. 1 to 5 show a tunnel 1 that has been deframed after secondary lining is performed and the concrete is cured, and a wet curing apparatus (hereinafter referred to as a wet curing apparatus) for lining concrete according to the present invention installed in the tunnel 1. ) 2.
As can be seen from FIG. 1, the tunnel 1 has, for example, a so-called “kamaboko shape” having an arc cross section.

  The left side of FIG. 1 is a formation side of an underground tunnel formed by excavating a natural ground, and a centle and a drilling device (not shown) are installed in the direction.

The wet curing device 2 is installed behind the center. And it is formed over a predetermined range in the longitudinal direction of the tunnel 1 in such a shape as at least the shape of the upper half of the cross section of the tunnel 1. For example, the wet curing apparatus 2 is a hollow body having an outer shape such that a curved portion of a kamaboko having a substantially semicircular cross section is cut in the longitudinal direction with a predetermined thickness.

  The size is 6.86 meters at the maximum with the radius of curvature being approximately the same as that of the tunnel 1 at the outer diameter, and 5.885 meters at the maximum in the inner diameter. The length dimension corresponds to approximately 30 meters. A sufficient work area A is secured below the occupied area of the apparatus 1 in the tunnel 1.

  The wet curing apparatus 2 is a hollow body, and its internal space (space part) has substantially the same shape as the outer shape of the wet curing apparatus 2. The internal space is indicated by a symbol S. The internal space S is at least defined by a sheet portion 3 that defines a space portion in a sealed manner with the inner wall surface 11 of the tunnel 1 and a large number of assembly frames 4 that form a framework of the sheet portion 3.

  As another component of the wet curing device 2, a rail body 7 made of H-shaped steel that moves by engaging the wet curing device 2 with a roller device 6 installed on the ceiling surface 11a of the tunnel 1 (see FIGS. 1 to 8). ), A blower 8 that spreads the mist to every corner of the internal space S (see FIGS. 9 and 10), and a spraying device 5 that sprays the internal space S to generate mist (see FIG. 11). .

  In addition, the code | symbol 9 shown by FIGS. 1-5 is a ventilation pipe, and is a pipe | tube for introduce | transducing outside air in the tunnel 1 and ventilating. The blower tube 9 penetrates the wet curing apparatus 2 in the longitudinal direction.

  As described above, the wet curing apparatus 2 having such a structure is a hollow body having an outer shape such that a curved portion of a kamaboko having a substantially semicircular cross section is cut in the longitudinal direction with a predetermined thickness. It is. Therefore, the wet curing apparatus 1 has a front end surface 21 that is an end surface on the excavation side, a rear end surface 22 that faces the end surface 21, a bottom surface 23, and an outer peripheral surface 24 that is the other portion. In addition, except the outer peripheral surface 24, the sheet | seat part 3 covered with the sheet | seat 31 is formed. Before describing these surfaces 21, 22, 23, and 24, the sheet portion 3 and the assembly frame 4 will be described.

  The sheet portion 3 is a portion covered with a sheet 31 made of polyethylene film or vinyl film, and is attached to the assembly frame 4 by nuts and bolts, strings or other appropriate attachment means (not shown).

  The assembly frame 4 is formed of a plurality of pipes and is installed at 16 equal intervals in the longitudinal direction of the tunnel 1. The pair of assembly frames 4 positioned on the wife side of the assembly frame 4 and the assembly frame 4 positioned between them are different in shape.

  The assembly frame 4 on the wife side is indicated by reference numeral 4A for convenience, and the intermediate assembly frame 4 is indicated by reference numeral 4B. In addition, when using a code | symbol 4, it is used as a general term for an assembly frame.

  As shown in FIG. 2, the assembly frame 4A located on the wife side has a crescent shape, and has a shape that looks down with the string side down. The assembly frame 4A includes an outer frame 41 having substantially the same curvature as the inner wall surface of the tunnel 1, a middle frame 42 having a curvature larger than the curvature of the outer frame 41, about 1 meter downward from the outer frame 41. The inner frame 43 which is several tens of centimeters below the middle frame 42 and substantially parallel to the middle frame 42, and a plurality of supports extending in the vertical direction connecting the outer frame 41 and the middle frame 42 to strengthen them. Frame 44.

  The outer frame 41 and the middle frame 42 are coupled at both ends thereof, and both ends of the inner frame 43 are coupled at locations near both ends of the middle frame 42. Using each of these frames as a framework, a sheet 31 is stretched over the entire surface of the assembly frame 4A (see FIGS. 4 and 5).

  The assembly frame 4A is provided with rail support members 71 for supporting the rail body 7 from below on both sides of a center line C1 extending in the vertical direction (see FIG. 2). Furthermore, a blower tube passage region a1 through which the blower tube 9 is passed is formed on the right side of the rail support member 71 located on the left side of FIG.

  A spray tube 51 having the same curvature as that of the outer frame 41 is provided on the outer frame 41 (see FIG. 11). The spray pipe 51 is dotted with nozzles 511 (see FIG. 2), and water is sprayed from the nozzle 511 toward the inner wall surface 11 of the tunnel.

  In addition, eye nuts 411 a are attached to both ends of the outer frame 41. The eye nut 411a is attached in the longitudinal direction of the tunnel 1, and a turn buckle 412 which is a tension fitting is attached to the eye nut 411a (see FIGS. 12 to 14).

  The inner frame 43 is configured such that the sheet 31 is stretched also on the lower edge in the longitudinal direction (see FIGS. 2 to 4). The sheet 31 stretched on the lower edge is stretched not only on the assembly frame 4A located on the wife side but also on the lower edge of the assembly frame 4B located in the middle. When the sheet 31 is stretched on the lower edge of all the assembly frames 4, the bottom surface 23 of the wet curing apparatus 1 is in a state where the sheet 31 is stretched over the entire surface (see FIGS. 4 and 5).

  The sheet 31 stretched on the bottom surface 23 is provided with sealing members that are in contact with the inner wall surface of the tunnel in the longitudinal direction of the tunnel on both side edges.

  In order to provide the sealing member, both side edges of the sheet 31 on the bottom surface 23 are bifurcated up and down, and a foamed polystyrene material 300 formed in a columnar shape is attached to one of the upper lines. This foamed polystyrene material 300 functions as a sealing member.

  As shown in FIGS. 15 and 16, the foamed polystyrene material 300 is passed through the wire 414 to contact the inner wall surface 11 of the tunnel and extends in the longitudinal direction of the tunnel 1. The wire 414 is connected to eyenuts 411a provided at both ends of the assembly frame 4A located on the wife side via the turnbuckle 412.

  Then, the wire 414 is tensioned by the turnbuckle 412, and a number of locking tools 415 are installed at equal intervals on the wire 414 in the tensioned state. The locking tool 415 is connected to one of the lines located on the upper side of the bifurcated portion formed on the side edge portions 3 a and 3 a of the sheet 31. By providing the locking tool 415 between the wire 414 and the side edge 3a of the sheet 31, the position of the foamed polystyrene material 300 becomes fixed.

  The other line located at the lower side of the bifurcated portion of the sheet 31 uses the side edge 3 a of the sheet portion 3 so that the sheet 31 itself contacts the inner wall surface 11 of the tunnel. That is, in FIG. 2, the side edge 3a of the seat portion 3 is suspended at a position below the contact position Cn where the axis Ch included in the horizontal plane of the axis in the cross section of the tunnel contacts the inner wall surface 11 of the tunnel. In this state, the side edge portion 3a of the seat portion 3 is brought into close contact with the tunnel inner wall surface 11, thereby functioning as a sealing member for preventing mist leakage.

  As shown in FIG. 2, the support frame 44 is formed between the outer frame 41 and the inner frame 43 (or the middle frame 42) due to the difference in the curvature of the arc between the outer frame 41 and the inner frame 43 (or the middle frame 42). Therefore, the length dimension differs depending on the installation location.

Further, in order to increase the rigidity of the assembly frame 4A when the outer frame 41 and the inner frame 43 (or the middle frame 42) are assembled, both bolts 441u, 4 of the turnbuckle 441 are provided on the support frame 44.
A support frame 44A in which 441d is assembled to the outer frame 41 and the inner frame 43, respectively, is combined.

  The support frame 44 </ b> A is applied with a predetermined tension by adjusting the turnbuckle 441 between the outer frame 41 and the middle frame 42 via the assembly piece 413 formed on the outer frame 41 and the assembly piece 423 of the middle frame 42. It is attached in the state where it was attached. By tightening the turnbuckle 441 in this way, the rigidity of the assembly frame 4A is increased. Moreover, the tension of the sheet 31 stretched over the entire surface of the assembly frame 4A can be adjusted by tightening the turnbuckle 441.

Next, the rail support material 71 that supports the rail 7 will be described.
The rail support member 71 is one in which the rail body 7 is fixed to the tip of the upper bolt 712u of the turnbuckle 712 that functions as a length adjustable support leg. For this purpose, an upper knuckle joint 711u and a lower knuckle joint 711d are respectively provided on the upper bolt 712u and the lower bolt 712d of the turnbuckle 712, and the rail body 7 is fixed to the upper knuckle joint 711u by welding or fastening means. Further, the upper knuckle joint 711u and the lower knuckle joint 711d have their respective rotation axes parallel (see FIGS. 7 and 8).

  On the other hand, the assembly frame 4B located in the middle of the wet curing apparatus 1 in the longitudinal direction with respect to the assembly frame 4A located on the wife side has a middle frame instead of the outer frame 41 of the assembly frame 4A as shown in FIG. 42 is the same as the assembly frame 4A except that it has a parallel outer frame 41A that is parallel to 42 and separated from the ceiling surface 11a of the tunnel 1 by about 1 meter.

  Similar to the outer frame 41 of the assembly frame 4A, the parallel outer frame 41A is also formed with a blower tube passage region through which the blower tube 9 is passed. The blower tube passage area is denoted by reference numeral a11. A rail support 71 is also attached. The rail support material 71 of the parallel outer frame 41A of the assembly frame 4B located in the middle and the rail support material 71 of the outer frame 41 of the assembly frame 4A located on the wife side are in series in the longitudinal direction of the tunnel 1 ( (See FIG. 1).

  Moreover, the eye nut 411b is attached also to the assembly frame 4B toward the outer side in the width direction of the wet curing device 2 as shown in FIGS. FIG. 3 is an enlarged cross-sectional view of FIG. 1, and FIGS. 17 to 19 are drawings related to the region XVII of FIG.

  Wires 414 are stretched on both side edges of the wet curing device 1 to the eye nut 411b of the assembly frame 4B and the eye nut 411a of the assembly frame 4A via the turnbuckle 412 (in the drawing, the wire stretched on one side edge). Only 414 is shown). The wire 414 is passed through a foamed polystyrene material 300 which is one of sealing members for preventing mist leakage.

Next, the front end surface 21 of the wet curing apparatus 1 will be described.
The front end surface 21 of the wet curing device 1 is a part of the assembly frame 4 in which the assembly frame 4 </ b> A located at the forefront is covered with the sheet 31.

  The rear end surface 22 of the wet curing device 1 has basically the same configuration as the front end surface 21, but does not include the spray device 5 and the blower 8.

  The bottom surface 23 of the wet curing device 1 is a part where the sheet 31 is attached to the lower edges of a number of assembly frames 4 as described above.

  The outer peripheral surface 24 of the wet curing apparatus 1 is a portion that is not stretched and directly faces the inner wall surface 11 of the tunnel.

Next, the roller device 6 will be described.
A large number of roller devices 6 are suspended from the ceiling surface 11a of the tunnel 1 and are arranged in series at a predetermined interval in the longitudinal direction of the tunnel 1. In addition, the roller device 6 includes a set of four rollers 61 as shown in FIG. Then, as described above, when the flange portion 7a of the rail body 7 using the H-shaped steel is placed on the rollers 61 of the plurality of roller devices 6, and the rail body 7 is moved in this state, the roller 61 rotates. Therefore, the rail body 7 moves in the longitudinal direction of the tunnel 1 in which the roller devices 6 are arranged in series. Since the rail body 7 is fixed to the wet curing device 1 through all 16 assembly frames 4, when the wet curing device 1 moves, the rail body 7 slides by the rotation of the roller 61 and is smoothly wetted. The curing device 1 is moved (see the white arrows in FIGS. 1 and 6).

Next, the blower 8 will be described.
As shown in FIGS. 9 and 10, the blower 8 includes a blower main body 81 and an attachment arm 82 that hangs the blower main body 81 on the H-shaped steel. It is intended to spread. And the air blower 8 is installed in the rail body 7 in the wet curing apparatus 1 at equal intervals. The blower 8 may be installed outside the wet curing apparatus 1.

  As shown in FIG. 11, the spray device 5 includes the spray tube 51 and a dust saver 52 that feeds water into the spray tube 51 at a high pressure.

Next, the function and effect of the wet curing apparatus 1 having such a configuration will be described.
According to the wet curing apparatus 1, the shape of the internal space S formed by the inner wall surface 11 of the tunnel 1 and the sheet portion 3 is held by the numerous assembly frames 4. The mist produced by the spraying device 5 in the held internal space S is eventually filled in the internal space S. The concrete surface of the tunnel 1 is wetted by the filled mist.

  Further, the range in which the mist is filled is a space portion formed by the tunnel inner wall surface 11 and the seat portion 3, and the mist does not expand beyond the internal space S. Therefore, mist does not fill the entire tunnel. In other words, only the internal space S of the present apparatus 2 that is wet-cured in the tunnel 1 is filled with mist, but outside the internal space S is another space that is partitioned by the sheet 31 and has no mist. It becomes the work area A as a part.

  In other words, the internal space S is formed along the shape of at least the upper half of the tunnel cross section and over a predetermined range in the longitudinal direction of the tunnel 1, and below the occupied area of the device 2 in the tunnel 1. In this case, a sufficient work area A is formed.

  Therefore, a work area having a good visibility can be secured below the installation location of the apparatus 2 in the tunnel 1. Therefore, another work in the tunnel 1 can be performed even during the wet curing in the tunnel 1.

  In addition, since it is only in the internal space S that is in a wet state, the work area A outside the internal space S in the tunnel 1 has less moisture than the internal space S. Therefore, there is no possibility that the work area A will become a roadbed mud.

  Rather than laying rails in the tunnel 1, it is easier to install a large number of roller devices 6, which are much smaller than the rails, on the ceiling surface 11 a of the tunnel 1 at a predetermined interval. Therefore, the cost can be reduced by shortening the construction period.

Since the spraying device 5 and the blower 8 are provided in the assembly frame 4A located at least on the wife side of the assembly frame 4, the mist spreads from end to end in the internal space S of the wet curing device 1. The blower 8 may be provided at predetermined intervals in the longitudinal direction of the rail 7. In that case, the mist is sufficiently distributed in the internal space S.

  Further, since the side portion 3 a of the sheet portion 3 forming the internal space S has a sealing member extending so as to contact the inner wall surface 11 of the tunnel in the longitudinal direction of the tunnel 1, it is difficult for mist to leak from the internal space S. Therefore, sufficient moisture curing of the tunnel 1 can be performed. As a result, the quality of the lining concrete and thus the tunnel is improved.

  In addition to the foamed polystyrene material 300 as the sealing member, the side edge of the sheet portion 3 is used so that the sheet portion 3 abuts against the tunnel inner wall surface 11 as the sealing member.

  Since the side edge portion 3a of the seat portion 3 is only a part of the axis line in the tunnel cross section that hangs down at a position below the contact position Cn where the axis line Ch included in the horizontal plane is in contact with the tunnel inner wall surface 11. The sealing member can be easily installed. In addition, since the foamed polystyrene material 300 is lightweight and the seat portion 3 is an existing one, the weight of the device 1 does not increase significantly.

  Furthermore, by disposing the foamed polystyrene material 300 on the inner side of the side edge portion of the seat portion 3, the internal space S is further sealed, and the sealing effect can be enhanced.

  Since these sealing members can further suppress the mist from leaking out of the internal space S, it is possible to prevent the visibility in the tunnel 1 from being deteriorated due to the mist and to prevent the roadbed from becoming muddy.

  It should be noted that the present invention is not limited to the illustrated examples described above, and it is needless to say that various modifications can be made without departing from the scope of the present invention. For example, the assembly frame need only be made of a material having the minimum strength necessary for maintaining the space during wet curing, and if it can maintain the space, it should be made of bamboo or other lightweight material. Is also possible. Therefore, the weight of the apparatus does not increase.

BRIEF DESCRIPTION OF THE DRAWINGS It is a whole perspective view of the wet curing apparatus of the lining concrete which concerns on this invention, Comprising: It is a figure which abbreviate | omits a sheet | seat. FIG. 2 is an enlarged end view of FIG. 1. FIG. 2 is an enlarged cross-sectional view of FIG. 1. It is the figure seen from the arrow IV direction of FIG. It is a figure which shows the state which removed the lower surface sheet | seat from FIG. It is an expansion perspective view of the area | region VI part of FIG. It is the figure seen from the arrow VII direction of FIG. It is the figure seen from the arrow VIII direction of FIG. It is a front view of an air blower. It is the figure seen from the arrow X direction of FIG. It is an expansion perspective view of a nozzle part. FIG. 3 is an enlarged view of a main part of a region XII part of FIG. FIG. 13 is an enlarged plan view of FIG. 12. It is an enlarged right view of FIG. 12, Comprising: It is a figure which abbreviate | omits a tunnel wall surface. It is the expansion perspective view of the area | region XV part in FIG. 1, Comprising: It is the figure which looked at the area | region XV part from back. FIG. 16 is an enlarged cross-sectional view of FIG. 15. It is an enlarged view of the basin XVII part in FIG. It is a top view of FIG. It is a right view of FIG. 18, Comprising: It is a figure which abbreviate | omits a tunnel wall surface.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Tunnel 11 Tunnel inner wall surface 11a Ceiling surface 2 Wet curing device 21 Front end surface of wet curing device 22 Rear end surface of wet curing device 23 Bottom surface of wet curing device 24 Outer peripheral surface of wet curing device 3 Sheet part 3a Side edge of sheet part (Sealing member)
31 seat 4 assembly frame 4A assembly frame 4B located on the wife side 4B assembly frame 41 middle frame 41 outer frame 411a eye nut 411b eye nut 412 turnbuckle 413 assembly piece 414 wire 415 locking tool 41A parallel outer frame 42 middle frame 423 assembly Piece 43 Inner frame 44 Support frame 44A Support frame 441 Turn buckle 5 Spraying device 51 Spraying tube 52 Dust saver 511 Nozzle 6 Roller device 61 Roller 7 Rail body 7a Rail body flange portion 71 Rail support material 711u Upper knuckle joint 711d Lower knuckle joint 711d Turnbuckle 712u Upper bolt 712d Lower bolt 8 Blower 81 Blower body 82 Mounting arm 9 Blower 300 Fired polystyrene material (sealing member)
A Work area, another space without mist C1 Center line Ch Axis line Cn Contact position S Sealed space a1 area a11 Air duct through area

Claims (8)

Concrete is placed between the formwork used in tunnel lining work for covering the inner wall surface of the tunnel with concrete and the inner wall surface of the tunnel. After the casting, the concrete is put into the mold for a predetermined time until the concrete hardens. A moisture curing device for lining concrete that protects the inside of the frame and prevents cracking due to drying shrinkage by setting the concrete surface in a wet state so that cracking does not occur on the concrete surface after curing,
A seat portion that is installed behind the mold and that forms a space between the inner wall surface of the tunnel after wrapping that has been unframed to remove the mold after the concrete is cured;
An assembly frame as a framework of this seat part;
A spraying device for spraying a spray into the space;
Wherein provided on the side of the seat portion to form a space portion, possess a sealing member extending to abut in the longitudinal direction of the tunnel on the inner wall surface of the tunnel,
The sealing member uses a foamed polystyrene material formed in a column shape, or / and a side edge portion of the sheet portion for forming the space portion so that the sheet portion contacts the inner wall surface of the tunnel. A wet curing apparatus for lining concrete characterized by the above. The space portion is formed along a shape of at least the upper half of the cross section of the tunnel and over a predetermined range in the longitudinal direction of the tunnel, and is sufficiently below the occupied area of the device in the tunnel. 2. The lining concrete wet curing apparatus according to claim 1, wherein a work area is secured. A plurality of roller devices installed on a ceiling surface of the tunnel, having rollers and arranged at predetermined intervals in the longitudinal direction of the tunnel;
A rail body that is provided on the assembly frame and is movable between the roller devices by rotating the rollers while being supported by the rollers of the plurality of roller devices;
The wet curing apparatus for lining concrete according to claim 1 or 2, characterized by comprising: 4. The spray device and the blower are provided at or near the assembly frame at a position located at least at the tip of the space portion of the assembly frame. 5. Wet curing equipment for concrete lining. The wet curing apparatus for lining concrete according to claim 4, wherein the blower is provided at predetermined intervals in the longitudinal direction of the tunnel. In the case where the side edge of the sheet member is used as the sealing member, the side edge of the sheet member is positioned below the contact position where the axis included in the horizontal plane of the axis in the cross section of the tunnel contacts the inner wall surface of the tunnel. moist curing apparatus lining concrete according to any one of claims 1 to 5, characterized in that so as to droop.   The said foaming polystyrene material is arrange | positioned inside the side edge part of the said sheet | seat part, when the said foaming polystyrene material and the side edge part of the said sheet | seat part are applied to the said sealing member, The Claim 6 characterized by the above-mentioned. Wet curing equipment for concrete lining. The assembly frame, the lining concrete according to any one of claims 1 to 7, characterized in that a material having a minimum strength to maintain the space during execution of wet curing Moist curing device.

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