JP2021032023A - Construction method of civil engineering concrete structure, concrete placing formwork, and civil engineering concrete structure - Google Patents

Abstract

To provide a construction method of a civil engineering concrete structure, a concrete placing formwork, and a civil engineering concrete structure capable of maintaining high quality for a long period of time by preventing deterioration caused by affection of natural environment, of a civil engineering concrete structure in which a concrete skeleton is formed by placing concrete into a concrete placing space portion to solidify it.SOLUTION: A concrete placing space portion 20 is constituted of a plurality of formwork panels 12 by fixing the formwork panels 12 each obtained by laminating a heat insulation inner wall 121 and a reinforced outer wall 122 with a timbering member of panel fixing means 70 and maintaining in a surrounding state so as to provide a predetermined space by the plurality of formwork panels 12. Concrete is placed in the concrete placing space portion 20, the concrete is cured, the concrete is hardened, and then the timbering member is detached. There is formed a concrete skeleton 210 covered with the plurality of formwork panels 12 integrated by solidification of the concrete.SELECTED DRAWING: Figure 1

Description

The present invention relates to a method for constructing a civil engineering concrete structure in civil engineering works such as rivers, roads, bridges, harbors, railways, and water and sewage systems, a concrete casting mold, and a civil concrete structure. The present invention relates to a construction method of a civil engineering concrete structure constructed by placing concrete in a concrete placing space composed of concrete, a concrete placing form, and a civil concrete structure.

Conventionally, when forming a civil engineering concrete structure such as a wall, a foundation, or a bridge, the concrete formwork is fixed by a plate-shaped concrete formwork until the poured concrete hardens, and then the concrete formwork is removed after the concrete formwork is solidified. Is widely used (see, for example, Patent Document 1).

Sabo is carried out by concrete weirs to prevent the collapse, outflow, and movement of earth and sand in mountains, coasts, riverbanks, etc., for example, for the purpose of preventing erosion of the sabo dam mountain surface and outflow of sediment and huge stones in rivers. There is a sabo dam installed in the mountainous area upstream. By the way, in order to construct a sabo dam, a method is usually used in which a formwork is made of an iron plate or the like, concrete or the like is poured into the formwork to complete the formwork, and then the formwork is removed (). For example, see Patent Document 2).

In addition, it is known that the structural performance of concrete, which is widely used for civil engineering and building structures, deteriorates due to various causes such as neutralization, salt damage, and acid as it ages.

Japanese Patent No. 5774157 Japanese Unexamined Patent Publication No. 2010-137382

Concrete structures deteriorate due to various factors such as the natural environment, concrete materials, and construction methods. In particular, at civil engineering sites, the quality of concrete is adversely affected by the fact that concrete is always directly affected by the natural environment depending on the construction site and construction period.

That is, in a civil engineering concrete structure, in a natural environment, temperature and humidity fluctuations caused by climate change frequently and repeatedly induce expansion and contraction due to temperature and expansion and contraction due to changes in water content. Since it receives tensile force, it may crack and easily deteriorate. In addition, the structural performance of civil engineering concrete structures deteriorates due to various causes such as neutralization, salt damage, and acid as they age due to exposure to wind and rain in the natural environment.

The present invention has been made in view of such a problem, and an object of the present invention is a civil engineering concrete structure in which a concrete skeleton is formed by placing concrete in a concrete placing space and solidifying it. Providing construction methods for civil engineering concrete structures, concrete casting formwork, and civil concrete structures that can maintain high quality for a long period of time by preventing deterioration due to the influence of the natural environment. To do.

Other objects of the present invention, the specific advantages obtained by the present invention, will be further clarified from the description of the embodiments described below.

The present invention is a method for constructing a civil engineering concrete structure, in which a formwork panel formed by laminating a heat insulating inner wall and a reinforced outer wall is fixed by a support member of a panel fixing means, and a predetermined space is created by a plurality of formwork panels. By maintaining the state of being enclosed so as to be provided, the concrete casting space is formed by the plurality of formwork panels, concrete is poured into the concrete casting space, the concrete is cured, and the concrete is provided. The support member is removed after solidifying the concrete, and the concrete is solidified to form a concrete skeleton covered with the plurality of formwork panels integrated.

Further, the present invention is used for the construction of a civil engineering concrete structure composed of a concrete skeleton in which concrete is solidified and the above-mentioned plurality of form panels are placed in a concrete placement space composed of a plurality of form panels. In the installation mold, the plurality of mold panels and the panel fixing means for fixing the plurality of mold panels with supporting members and forming the concrete placing space portion by the plurality of mold panels. In preparation, the form panel is made by laminating a heat insulating inner wall and a reinforced outer wall, concrete is placed in the concrete placing space, and after the concrete is cured, only the supporting member of the panel fixing means is removed. The plurality of mold panels are integrated with the concrete skeleton to form a civil engineering concrete structure.

Further, the present invention is a civil engineering concrete structure, in which a plurality of formwork panels formed by laminating a heat insulating inner wall and a reinforced outer wall constituting a concrete placing space portion and the plurality of formwork panels are fixed by supporting members. The panel fixing means that constitutes the concrete casting space by maintaining the concrete in a state of being enclosed so as to provide a predetermined space, and concrete was poured into the concrete casting space to cure the concrete. It is characterized by having a concrete skeleton covered with the plurality of formwork panels integrated by the concrete being solidified after the support member is later removed.

In the civil engineering concrete structure according to the present invention, its construction method, and the concrete casting formwork, the heat insulating inner wall may be made of foamed synthetic resin or glass wool mixed cement.

Further, in the construction method of the civil engineering concrete structure, the formwork for placing concrete, and the civil engineering concrete structure according to the present invention, the reinforced outer wall is a ceramic plate body, a stainless steel plate body, a fiber reinforced plastic plate body, and steel. It can consist of either a plate-making body or a concrete steel plate-making body.

Further, in the construction method of the civil engineering concrete structure according to the present invention, the formwork for placing concrete, and the civil engineering concrete structure, the mounting holes of the formwork panel exposed to the outside by removing the support member are weather resistant. Post-treatment for sealing with a sealing member can be performed.

Further, in the construction method of the civil engineering concrete structure, the formwork for placing concrete, and the civil engineering concrete structure according to the present invention, the sealing member includes a long nut arranged in a mounting hole of the heat insulating inner wall and its length. It can be a sealing bolt that is inserted into the scale nut from the reinforced outer wall side and screwed.

Further, in the concrete casting formwork according to the present invention, the panel fixing means penetrates the horizontal rail and the vertical rail and the mounting holes formed at the intersections of the horizontal rail and the vertical rail which are combined in a grid pattern. The formwork fixing rod is composed of bolts and nuts arranged on the formwork fixing rod, and the formwork fixing rod is connected via a long nut arranged in a mounting hole of the heat insulating inner wall, and the formwork fixing rod is formed. One of the arranged formwork fixing rods can be made removable from the long nut.

In the present invention, concrete is placed by fixing a plurality of formwork panels formed by laminating a heat insulating inner wall and a reinforced outer wall by a supporting member of a panel fixing means and maintaining them in a state of being enclosed so as to provide a predetermined space. A space portion is formed, concrete is cast in the concrete casting space portion, the concrete is cured, the support member is removed, and the concrete is solidified to be integrated by the plurality of formwork panels. Form a covered concrete formwork.

That is, in the present invention, it is possible to provide a civil engineering concrete structure having a concrete skeleton covered with a plurality of formwork panels integrated by solidifying concrete, and the civil engineering concrete structure can be provided in a natural environment. Even when exposed to wind and rain, the concrete skeleton inside is protected by the weather resistance of the reinforced outer wall, and the heat insulating inner wall protects it from changes in the outside temperature, so high quality is maintained for a long period of time. be able to.
Further, in the present invention, by performing a post-treatment of sealing the mounting holes of the formwork panel exposed to the outside by removing the support member with a weather-resistant sealing member, the quality is further high for a long period of time. Can be maintained.

Therefore, according to the present invention, deterioration due to the influence of the natural environment of the civil engineering concrete structure in which the concrete skeleton is formed by placing concrete in the concrete placing space and solidifying it is prevented for a long period of time. It is possible to provide a construction method of a civil engineering concrete structure, a formwork for placing concrete, and a civil engineering concrete structure capable of maintaining high quality.

It is a perspective view which shows the structure of the concrete casting formwork which concerns on 1st Embodiment of this invention. It is a vertical sectional side view of the said concrete casting formwork. It is a figure which shows the unit panel which comprises the formwork panel of the concrete casting formwork, (A) is the top view of the unit panel, (B) is the FF line sectional view of the unit panel, (C) is A front view of the unit panel, (D) is a bottom view of the unit panel, and (E) is a side view of the unit panel. It is a perspective view of the state in which the unit panels are arranged side by side and connected. It is a process drawing which shows the procedure of the construction method of the civil engineering concrete structure by the said formwork for concrete placing. It is a perspective view of the civil engineering concrete structure constructed by the said concrete casting formwork. It is a figure which shows the support member in the concrete casting formwork, and the bolt / nut configuration for fixing them, (A) is a front view of the bolt / nut configuration, and (B) is a bolt / nut of a color combination type. It is sectional drawing of the structure. It is a figure which shows the support member in the above-mentioned concrete casting form and another example of a bolt / nut configuration for fixing them, and (A) is a bolt / nut configuration using three bolts and nuts. A cross-sectional view of a nut configuration, (B) is a cross-sectional view of a bolt / nut configuration using four nuts, and (C) is a cross-sectional view of a bolt / nut configuration of a nut-combined type with a specified thickness. It is a figure which provides for the description of the 2nd Embodiment of this invention which constructed the civil concrete structure which closed the mounting hole of the formwork panel with a sealing bolt, and (A) is the 2nd Embodiment. It is a vertical sectional side view which shows the structure of the concrete placing formwork in the above, (B) is a vertical sectional side view of the civil engineering concrete structure constructed by the said concrete placing formwork, and said said concrete placing formwork. It is a longitudinal side view of the civil engineering concrete structure before closing the mounting hole constructed by the above with a sealing bolt, and (C) shows the mounting hole of the formwork panel constructed by the concrete casting formwork with a sealing bolt. It is a longitudinal side view of a civil engineering concrete structure closed with. It is a perspective view of the civil engineering concrete structure constructed by the said concrete casting formwork.

Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings. The common components will be described with reference numerals in the drawings. Further, the present invention is not limited to the following examples, and it goes without saying that the present invention can be arbitrarily modified without departing from the gist of the present invention.

According to the present invention, for example, as in the first embodiment shown in FIGS. 1 to 8 and the second embodiment shown in FIGS. 9 and 10, civil engineering works such as rivers, roads, bridges, ports, railways, water and sewage systems, etc. In, it is applied to the construction of the civil engineering concrete structure 200, 200A constructed by placing concrete in the concrete placing space portion 20 composed of the concrete placing formwork 100, 100A.

In the first embodiment, the concrete casting formwork 100 used for the construction of the civil engineering concrete structure 200 includes a pair of formwork panels 12 and the pair of formwork panels as shown in the perspective view of FIG. 12 is fixed by a support member, and the panel fixing means 70 that constitutes the concrete casting space 20 by the pair of formwork panels 12 is provided.

The support member used for the concrete casting formwork 100 supports a panel fixing that can be used repeatedly by supporting the outer surface 12a of the formwork panel 12 in which the concrete placing space portion 20 is provided as a predetermined space for placing concrete. It constitutes the main part of the means 70. It is suggested that the formwork panel 12 having the same shape is extended below FIG. Further, due to the nature of the concrete casting formwork 100, it is suggested that the concrete casting formwork is extended in the same or different shape in the left-right direction in FIG. 1 or the cross section is closed. , The exposed cross sections are drawn on the left and right sides of FIG.

The panel fixing means 70 is composed of supporting members such as a horizontal rail 71, a vertical rail 72, and a bolt / nut configuration 60, and a plurality of horizontal rails 71 and vertical rails 72 arranged in parallel are combined in a grid pattern. The outer surface 12a of the formwork panel 12 is evenly supported at equal intervals by the flat surface including the grid-like combination thereof. Further, the horizontal rail 71 and the vertical rail 72 are provided with mounting holes 74 penetrating the intersections assembled in a grid pattern, and are arranged in the formwork fixing rod 40 penetrating the mounting holes 74 at the intersections. The formwork panel 12 is locked in the concrete casting space 20 inward by the bolt / nut configuration 60 or the like.

The cross rail 71 has a length corresponding to the width W of the formwork panel 12. Similarly, the vertical rail 72 has a length corresponding to the height V of the form panel 12. The horizontal rail 71 and the vertical rail 72 do not necessarily have to be connected to one in order to secure the length corresponding to the width W and the height V, respectively. That is, the horizontal rail 71 of an arbitrary length and the vertical rail 72 of an arbitrary length are arranged in a number corresponding to the width W and the height V, respectively, and the support members are arranged so as to cover the entire wall surface. It does not matter if it is configured. The number of horizontal rails 71 and vertical rails 72 required to cover the area of the formwork panel 12 is used according to the area of the formwork panel 12. Further, at least one of the horizontal rail 71 and the vertical rail 72 related to the intersection is provided with a recess R that can be fitted by accepting a part or all of the thickness Q and the width P of the other crosses facing each other. Has been done. Therefore, not only the horizontal rail 71 attached earlier but also the vertical rail 72 attached later are evenly supported on the outer surface 12a of the formwork panel 12 without rising from the outer surface 12a of the formwork panel 12. It is possible.

FIG. 2 is a vertical sectional side view for explaining the concrete casting formwork 100 of FIG. 1 in more detail. As shown in FIG. 2, in the concrete casting formwork 100, the pair of formwork panels 12 sandwich the core portion of the skeleton 210 in the concrete structure 200, for example, the wall core Y, by the panel fixing means 70. It is fixed in a facing state with a predetermined gap X. The concrete casting space 20 is formed by the gap X.

That is, in the concrete casting formwork 100, the skeleton side formwork fixing material 50, the formwork panel 12, and a plurality of horizontal crosspieces are provided from the central portion O in the length direction of the formwork fixing rod 40 toward both ends. 71 and a plurality of vertical rails 72 that are assembled in a grid pattern with respect to these horizontal rails 71 are arranged in this order. The objects arranged in this way are locked by the bolt / nut configuration 60 so as to maintain the positional relationship defined by the combination with the formwork fixing rod 40, and the concrete placing space portion 20 is formed. In the concrete casting space portion 20, the side end portions and the like (not shown) at the upper and lower ends of FIG. 2 are closed with small pieces of the form panel 12 and other plate materials so as not to leak the concrete to be cast. There is. Reinforcing bars 1 (omitted in FIG. 1) are vertically and horizontally assembled in the core portion of the skeleton 210 of the concrete structure 200, including the wall core Y, so as to increase the strength of the concrete structure 200. There is.

The support member in which a plurality of horizontal rails 71 and vertical rails 72 are assembled in a grid pattern abuts on the outer surface 12a of the formwork panel 12, and the formwork panel 12 is moved toward the wall core Y direction of the concrete casting space 20. I support it. The formwork fixing rod 40 penetrates the mounting holes 13, 74 formed in the formwork panel 12, the horizontal rail 71, and the vertical rail 72, respectively.

The formwork fixing material 50 on the skeleton side is locked at a predetermined position of the formwork fixing rod 40 to support the formwork panel 12 from the inside (for example, the wall core Y) to the outside (wall surface) of the concrete casting space 20. To do. Further, as an example of the bolt / nut configuration 60, at least one of both ends of the formwork fixing rod 40 may be screwed, and the other may be a locking means different from the bolt / nut configuration.

In the concrete casting formwork 100 illustrated in FIG. 2, the configuration from the central portion O to one end of the formwork fixing rod 40 and the configuration from the central portion O to the other end are the formwork fixing material 50 on the skeleton side. It is a completely symmetrical pair of formwork panel 12, horizontal rail 71, vertical rail 72, and bolt / nut configuration 60. That is, when forming a simple wall portion in the concrete structure 200, the concrete casting formwork 100 often has a pair of completely symmetrical configurations centered on the wall core Y, but is not limited thereto. .. That is, the concrete casting formwork 100 is formed not only for the wall but also for the complicated shape of each concrete skeleton part such as a pillar, a beam, a slab, a base or a bent portion constituting the skeleton of the concrete structure 200. Therefore, the shape is not limited to a symmetrical shape as in the concrete casting formwork 100 illustrated in FIG.

As shown in FIGS. 3 and 4, the formwork panel 12 in the concrete casting formwork 100 is formed by connecting the unit panels 10 side by side vertically.

3A and 3B are views showing a unit panel 10 constituting the formwork panel 12 of the concrete casting formwork 100, where FIG. 3A is a top view of the unit panel 10 and FIG. 3B is an F-of the unit panel 10. A sectional view taken along line F, (C) is a front view of the unit panel 10, (D) is a bottom view of the unit panel 10, and (E) is a side view of the unit panel 10.

As shown in FIG. 3, the unit panel 10 has a two-layer structure in which a heat insulating inner wall 121 and a reinforced outer wall 122 are laminated, and the heat insulating inner wall 121 and the reinforced outer wall 122 are joined by an adhesive or crimping.

The heat insulating inner wall 121 is made of a material having excellent heat insulating properties such as styrofoam, foamed polyethylene, polyurethane foam or other fireproof synthetic resin or glass wool mixed cement.

The reinforced outer wall 122 is made of any one of a ceramic plate body, a stainless steel plate body, a fiber reinforced plastic plate body, a steel plate body, and a corten steel plate body, which are excellent in waterproofness and weather resistance and have high rigidity.

The outer peripheral edge portion 11 of the heat insulating inner wall 121 of the unit panel 10 is divided into an inner region 2 and an outer region 3 of 1/2 each of the thickness G, and fits into the inner region 2 and the outer region 3. The part 9 is integrally formed. The fitting portion 9 is composed of an inner fitting portion 6 formed in the inner region 2 and an outer fitting portion 7 formed in the outer region 3. The inner fitting portion 6 has a large number of inner fitting protrusions 4a and inner fitting recesses 5a, respectively. Similarly, the outer fitting portion 7 has a large number of outer fitting convex portions 4b and outer fitting concave portions 5b, respectively.

FIG. 4 is a perspective view showing a state in which the unit panels 10 of FIG. 3 are arranged side by side and connected.

As shown in FIG. 4, the unit panel 10 is formed with a fitting portion 9 for relative fitting on the long side of the outer peripheral edge portion 11 to be abutted. The formwork panel 12 is formed by connecting a required number of unit panels 10 having the same or similar shape.

That is, the unit panel 10 constitutes the concrete casting formwork 100 by installing the formwork panel 12 formed in a wide area by abutting the outer peripheral edges 11 on which a large number of sheets face each other and combining them vertically and horizontally. .. The unit panel 10 has the same shape based on the unified standard, and can be fitted to each other by the adjacent fitting portions 9 due to the contour forming the unevenness.

The formwork panel 12 of the concrete casting formwork 100 is formed by connecting unit panels 10 having the same shape based on a unified standard so as to have long sides or short sides of substantially rectangles adjacent to each other, for example. .. Among the outer peripheral edge portions 11, in particular, the fitting portions 9 formed by the contour forming the unevenness can be securely fitted and connected to each other in the connecting portion 11a adjacent to each other. That is, in the fitting portion 9 formed on the long side of the outer peripheral edge portion 11 of each of the plurality of unit panels 10, the concave portion 5 of the partner is closely attached to the convex portion 4, or the convex portion 4 of the partner is closely attached to the concave portion 5. Fit into. Therefore, the connecting portion 11a is sturdy and forms a flat outer surface without causing a gap that causes concrete leakage and without a step.

Hereinafter, the fitting portion 9 to be relatively fitted will be described in more detail.

The fitting portion 9 has a large number of inner fitting convex portions 4a and a large number of inner fitting recesses 5a formed adjacent to each other in the length Z direction in the inner region 2 of the outer peripheral edge portion 11, and the fitting portion 9 in the outer region 3. It is composed of a large number of outer fitting protrusions 4b and a large number of outer fitting recesses 5b formed adjacent to each other in the length Z direction. Further, in the fitting portion 9, the inner fitting convex portion 4a and the inner fitting concave portion 5a are alternately formed in the inner region 2 of the outer peripheral edge portion 11 over the entire area in the length direction Z, and the outer fitting convex portion 9 is formed. The portions 4b and the outer fitting recesses 5b are alternately formed in the outer region 3 of the outer peripheral edge portion 11 over the entire length direction Z.

Further, the fitting portion 9 is formed by the outer fitting convex portion 4b and the outer fitting concave portion 5b, and the inner fitting convex portion 4a and the inner fitting concave portion 5a having substantially the same convex and concave dimensions. Further, the fitting portion 9 is formed by shifting the row of the inner fitting convex portion 4a and the inner fitting concave portion 5a by one pitch with respect to the row of the outer fitting convex portion 4b and the outer fitting concave portion 5b. The inner fitting concave portion 5a is located so as to face the outer fitting convex portion 4b, and the inner fitting convex portion 4a is located so as to face the outer fitting concave portion 5b. Further, the fitting portion 9 has the inner fitting convex portion 4a and the inner side with respect to the row of the outer fitting convex portion 4b and the outer fitting concave portion 5b on the upper side and the lower side of the outer peripheral edge portion 11 of the unit panel 10. The rows of fitting recesses 5a are staggered by one pitch. As described above, in the two rows of the inner fitting portion 6 and the outer fitting portion 7, the unevenness deviating by one pitch means a shape in which two rectangular waves having the same period are written together in opposite phases. ..

That is, in the concrete casting formwork 100, the formwork panel 12 is formed by connecting the unit panels 10 having a two-layer structure in which the heat insulating inner wall 121 and the reinforced outer wall 122 are laminated vertically side by side. The concrete casting space 20 is configured as a predetermined space surrounded by the wall surface.

Then, the formwork panel 12 is used as a part of the civil engineering concrete structure 200 without being dismantled and removed even after the concrete placed in the concrete placing space 20 is solidified.

The heat-insulating inner wall 121 of the formwork panel 12 that serves as the wall surface of the concrete casting space 20 has excellent heat-insulating properties such as styrofoam, foamed polyethylene, foamed polyurethane, and other materials having fireproof properties, such as synthetic foamed resin or cement mixed with glass wool. It is made of a material, and in particular, it is preferably formed of a closed-cell foamed synthetic resin, and what is known as an EPS formwork can be adopted.

Then, in this first embodiment, according to the procedure of the construction method of the civil engineering concrete structure according to the present invention shown in the process diagram of FIG. 5, the civil engineering concrete structure is formed by the concrete casting formwork 100 having the above-mentioned structure. Build 200.

That is, in the first step (ST1), the formwork panel 12 formed by laminating the heat insulating inner wall 121 and the reinforced outer wall 122 is fixed by the support member of the panel fixing means 70, and a predetermined space is provided by the plurality of formwork panels 12. The concrete casting space portion 20 is formed by the plurality of formwork panels 12 by maintaining the enclosed state so as to provide the above. That is, the concrete casting formwork 100 having the above-mentioned structure is constructed.

In the second step (ST2), concrete is placed in the concrete placing space 20. That is, the concrete casting space composed of the two-layer structure formwork panel 12 formed by laminating the heat insulating inner wall 121 and the reinforced outer wall 122 of the concrete casting formwork 100 constructed in the first step (ST1). Concrete is placed in the part 20.

In the third step ST3, the concrete placed in the concrete placing space 20 in the second step (ST1) is cured and solidified. As a result, the concrete skeleton 210 in which the concrete is solidified is formed.

In the fourth step ST4, only the support member of the concrete casting formwork 100 is removed and removed. That is, as described above, the formwork panel 12 formed by laminating the heat insulating inner wall 121 and the reinforced outer wall 122 is fixed by the support member of the panel fixing means 70, and is enclosed by the plurality of formwork panels 12 so as to provide a predetermined space. The formwork panel 12 is fixed from the concrete formwork 100 having a structure in which the concrete formwork space 20 is formed by the plurality of formwork panels 12 by maintaining the formwork in the packed state. Only the supporting members such as the horizontal rail 71, the vertical rail 72, and the bolt / nut configuration 60 constituting the panel fixing means 70 are removed and removed.

In this way, as shown in the perspective view of FIG. 6, the plurality of formwork panels 12 are integrated with the concrete skeleton 210 to construct the civil engineering concrete structure 200.

The civil engineering concrete structure 200 is maintained in a state where a plurality of formwork panels 12 formed by laminating a heat insulating inner wall 121 and a reinforced outer wall 122 are fixed by a panel fixing means 70 and enclosed so as to provide a predetermined space. After placing concrete in the concrete placing space 20 formed by the above concrete and curing the concrete, supporting members such as a horizontal rail 71, a vertical rail 72, and a bolt / nut configuration 60 constituting the panel fixing means 70. The concrete skeleton 210 is covered with the plurality of formwork panels 12 integrated by solidifying the concrete.

That is, in the civil concrete structure 200, a plurality of formwork panels 12 formed by laminating a heat insulating inner wall 121 and a reinforced outer wall 122 are fixed by a support member of the panel fixing means 70 and enclosed so as to provide a predetermined space. The concrete casting space 20 is formed by maintaining the concrete casting space 20 and concrete is poured into the concrete casting space 20. After the concrete is cured, the support member is removed and the concrete is solidified. It is constructed by forming a concrete skeleton 210 covered with the plurality of formwork panels 12 integrated with the above.

In this construction method, by integrating the formwork panel 12 with the surface of the concrete skeleton 210, the dismantling step of the formwork panel 12 can be eliminated. Further, since the formwork panel 12 integrated with the concrete skeleton 210 is formed by laminating the heat insulating inner wall 121 and the reinforced outer wall 122, the concrete skeleton 210 is shielded from the natural environment to provide heat insulating properties, sound insulating properties, and high airtightness. It is possible to form a civil engineering concrete structure 200 having improved fire resistance, durability or earthquake resistance.

Here, specific examples of support members such as horizontal rails 71, vertical rails 72, and bolt / nut configurations 60 constituting the panel fixing means 70 in the concrete casting formwork 100 will be described with reference to FIGS. 7 and 8. To do.

FIG. 7 is a diagram showing a horizontal rail 71 and a vertical rail 72 made of channel steel or a metal material having an equivalent shape, and a bolt / nut configuration 60 of a collar combination type, and FIG. 7A is a bolt / nut configuration 60. It is a front view of (B), and is a cross-sectional view of a bolt / nut configuration 60 of a color combination type.

8A and 8B are views showing another example of the bolt / nut configuration 60. FIG. 8A is a cross-sectional view of a bolt / nut configuration 60 using three nuts, and FIG. 8B is a nut fastening type using four. A cross-sectional view of the bolt / nut configuration 60, (C) is a cross-sectional view of the bolt / nut configuration 60 of the specified thickness nut combined type.

The horizontal rail 71 and the vertical rail 72 constituting the support member are made of channel steel or an equivalent metal material having rigidity enough to fix the formwork panel 12 against the weight of the cast concrete. Is preferable. The horizontal rail 71 and the vertical rail 72 have lengths corresponding to the width W and height V of the formwork panel 12, respectively, and are selectively adopted and assembled from among the stockpiled standard-sized ones of several stages. Each time the support member fulfills its role, the bolt / nut configuration 60 is loosened and disassembled, recovered intact, and used repeatedly.

As shown in FIGS. 7A and 7B, the horizontal rail 71 and the vertical rail 72 are provided with mounting holes 74 penetrating the intersections in which they are assembled in a grid pattern, and the intersections are formed. The formwork panel 12 is locked toward the inside of the concrete casting space 20 by a bolt / nut configuration 60 or the like arranged in the formwork fixing rod 40 penetrating the mounting hole 74 of the above. A formwork fixing member 50 on the skeleton side is fixed to the formwork fixing rod 40 at a position closer to the center by a predetermined length from one end thereof, and the flange portion 51 abuts on the inner side surface 12b of the formwork panel 12. , The formwork panel 12 is supported in the outward direction of the concrete placing space 20 to regulate the position. As a result, the gap X forming the concrete placing space 20 is maintained.

As described with reference to FIGS. 1 and 2, the concrete casting formwork 100 is a formwork fixing material on the skeleton side from the central portion O in the length direction of the formwork fixing rod 40 toward both ends. 50, the formwork panel 12, the horizontal rail 71, and the vertical rail 72 are arranged symmetrically in this order. As described above, in the concrete casting formwork 100, the configuration from the central portion O to one end of the formwork fixing rod 40 and the configuration from the central portion O to the other end 42 are often symmetrical. By explaining only one end (left side of FIG. 2) of the frame fixing rod 40 in detail, the other end (right side of FIG. 2) will also be described. The concrete casting formwork 100 may have an asymmetrical shape.

Further, both the horizontal rail 71 and the vertical rail 72 related to the intersection are provided with recesses R that can be fitted by mutually accepting half the thickness Q and the entire width P of the mating crosspieces facing each other. ing. Therefore, not only the horizontal rail 71 attached earlier but also the vertical rail 72 attached later are evenly supported on the outer surface 12a of the formwork panel 12 without rising from the outer surface 12a of the formwork panel 12. It is possible. The concrete casting formwork 100 is fastened by the bolt / nut configuration 60 after the horizontal rail 71 is attached first and the vertical rail 72 is attached later. The crosspiece 71 may be attached later.

As shown in FIG. 7B, the formwork fixing member 50 is fixed to the formwork fixing rod 40 at a position closer to the center by a predetermined length from one end thereof. The formwork fixing rod 40 is inserted into the mounting hole 13 of the formwork panel 12 so that the flange portion 51 of the formwork fixing material 50 on the skeleton side abuts on the inner side surface 12b of the formwork panel 12, and one end thereof is a mold. It protrudes from the outer surface 12a of the frame panel 12 by a length of thickness Q or more.

The cross rail 71 is mounted so that a protruding end of the formwork fixing rod 40 is inserted into the mounting hole 74. The cross rail fixing nut 62 is lightly tightened to the protruding end of the formwork fixing rod 40 into which the male screw 61 is screwed, and the cross rail 71 is attached to the outer surface 12a of the form panel 12 so as to be overlapped. After fitting the vertical rail back support collar 63 to the protruding end of the formwork fixing rod 40, the vertical rail 72 is attached so as to overlap the horizontal rail 71 and is fixed by the vertical rail fixing nut 64. The mutual positional relationship between the horizontal rail 71 and the vertical rail 72 in the thickness direction is defined by the height of the vertical rail back support collar 63. As a result, the intersections of the horizontal rail 71 and the vertical rail 72 are firmly connected.

Hereinafter, in contrast to the bolt / nut configuration 60 of the color combination type shown in FIG. 7 (B), the bolt / nut configuration 60 of the three-use nut fastening type shown in FIG. 8 (A) and the bolt / nut configuration 60 of FIG. 8 (B). Only the differences between the four-use nut fastening type bolt / nut configuration 60 and the specified thickness nut combined type bolt / nut configuration 60 shown in FIG. 8 (C) will be described.

The three-piece nut fastening type bolt / nut configuration 60 shown in FIG. 8 (A) is vertically replaced with the vertical crosspiece backing collar 63 in the color combination type bolt / nut configuration 60 shown in FIG. 7 (B). The cross rail fixing nut 65 is used, and the mutual positional relationship between the horizontal rail 71 and the vertical rail 72 is defined by the difference in the tightening position from the horizontal rail fixing nut 62. Therefore, a total of three nuts will be used.

In the four-use nut fixing type bolt / nut configuration 60 shown in FIG. 8B, only the form panel 12 is attached to the form fixing rod 40 and fixed by a support member before attaching the cross rail 71. The panel temporary fixing nut 66 is tightened so that the mounting hole 13 opened in the outer surface 12a of the form panel 12 is accommodated in the panel temporary fixing nut accommodating hole 12c having an enlarged diameter. After that, after the cross rail 71 is attached and then tightened with the cross rail fixing nut 62, the procedure is the same as the assembly procedure in the three-piece nut fixing type bolt / nut configuration 60 shown in FIG. 8 (A). Further, the mutual positional relationship between the horizontal rail 71 and the vertical rail 72 is defined by the difference in the tightening position between the horizontal rail fixing nut 62 and the vertical rail back fixing nut 65. Therefore, a total of four nuts will be used.

The bolt / nut configuration 60 of the specified thickness nut combined type shown in FIG. 8 (C) is the horizontal rail fixing nut 62 and the vertical rail fixing nut 62 in the four-use nut fastening type bolt / nut configuration 60 shown in FIG. 8 (B). Instead of the rail back stop nut 65, only the special extra-thick nut 67 having a thickness corresponding to the difference between the tightening positions of the two rails defines the mutual positional relationship between the horizontal rail 71 and the vertical rail 72. Therefore, the total number of nuts is three, and one of them uses a dedicated extra-thick nut 67.

As the material of the horizontal rail 71 and the vertical rail 72, wood, synthetic resin, iron, stainless steel, aluminum and the like are preferable, and in particular, a stainless steel material having high rust prevention and mechanical strength is preferable. As described above, the horizontal rail 71 and the vertical rail 72 are simple members such as sheet metal, which are formed in a similar shape and can be used repeatedly. The support member in which the horizontal rail 71 and the vertical rail 72 are combined in a grid pattern and bolted, and the concrete casting formwork 100 using the support member are easy to assemble and disassemble. As a result, it is possible to significantly reduce the construction cost by shortening the construction period and reducing the material cost.

As an example, the external dimensions of the horizontal rail 71 and the vertical rail 72 are such that the width P of the rail made of channel steel is about 150 mm and the thickness of the cross (≈ groove depth + steel plate thickness) Q is about 30 to 60 mm. Is formed in. Further, the recess R at the intersection is provided in at least one of the horizontal rail 71 and the vertical rail 72 so as to accept a part or all of the thickness Q and the width P of the mating crosspieces facing each other so that they can be fitted. ing. For example, a horizontal rail 71 having a length W × a width P of about 150 mm × a thickness Q of about 30 mm and a vertical rail 72 having a length V × a width P of about 150 mm × a thickness Q of about 60 mm are used. The vertical rail 72 is provided with a recess R having a width of about 170 mm and a thickness of about 30 mm at a position facing the cross rail 71 of the other party at their intersection. A horizontal rail 71 having a width P of about 150 mm and a thickness of about 30 mm is received and fitted into the recess R provided only in the vertical rail 72, and is fastened by the bolt / nut mechanism 60. Needless to say, the horizontal rail 71 and the vertical rail 72 are not limited to the specifications of such external dimensions, and are formed according to the specifications of the concrete skeleton, the formation site, or other conditions as appropriate, and in some cases, standard. A standard product that has been cut or cut is used.

Further, in the concrete casting formwork 100, the unit panel 10 is formed in a rectangular panel body using a foamed synthetic resin material, for example, foamed polyethylene resin as a material for the heat insulating inner wall 121. As an example, the external dimensions of the unit panel 10 are formed to have a length of about 1820 mm, a width of about 467 mm, and a thickness of about 50 (10 to 60) mm. It should be noted that the unit panel 10 is not limited to the specifications of such external dimensions, and is formed according to the specifications of the concrete skeleton, the formation site, the natural environment of the construction area, and other appropriate specifications. Depending on the standard product, a standard product that has been cut or cut may be used.

As the material of the heat insulating inner wall 121, the unit panel 10 may use, for example, a foamed synthetic resin material such as a expanded polystyrene resin, a foamed polyethylene resin, or a foamed polyurethane resin. In the assembled concrete casting formwork 100, concrete is cast in the concrete casting space 20. When the cast concrete dries, the unit panel 10 uses the foamed synthetic resin material as a material for the heat insulating inner wall 121, so that the concrete enters the inside and hardens to be firmly integrated with the concrete skeleton 210. By using the above-mentioned material for the heat insulating inner wall 121, the unit panel 10 can be easily processed and is lightweight, so that it is easy to handle such as transportation and installation, and the surface of the concrete skeleton 210. By integrating with, the above-mentioned characteristics such as heat insulation can be exhibited.

The concrete casting formwork 100 does not require a dismantling process of the formwork panel 12, and the formwork panel 12 integrated with the concrete skeleton 210 provides heat insulation, sound insulation, high airtightness, fire resistance, durability or earthquake resistance. It is possible to form a concrete structure 200 with improved properties by significantly shortening the construction period.

Although not shown, when concrete is placed on a relatively wide wall surface using the concrete casting formwork 100, the concrete placing space 20 expands in the direction of expansion until the concrete solidifies. Appropriately use diagonal rails, etc. from the outside of the grid-like horizontal rails 71 and vertical rails 72 to prevent the wall surface from collapsing so as to counter stress and deformation stress that causes the vertical surface of the wall to bend or fall. As a result, the concrete casting formwork 100 can withstand the weight of the cast concrete and maintain its shape.

On the other hand, when concrete is placed on a relatively narrow wall surface using the concrete casting formwork 100, the weight of the concrete to be placed in the concrete placing space 20 is light, so that the grid-like cross rails 71 and Even if the outside of the vertical rail 72 is not particularly firmly fixed by a diagonal rail or the like, the concrete casting formwork 100 bears the weight of the cast concrete and maintains its shape.

That is, there is little risk that the concrete casting formwork 100 will be destroyed or deformed in the expansion direction even if it is not firmly fixed by an oblique crosspiece or the like. Therefore, it is sufficient to have an oblique crosspiece (not shown) that resists the slight stress in the direction of tilting the concrete wall. In particular, when a concrete structure 200 for civil engineering in which a relatively narrow wall surface extends at a right angle to a large wall surface in a plan view is constructed by a concrete casting formwork 100, concrete casting for forming a narrow concrete wall surface is performed. The installation formwork 100 does not require countermeasures against the falling direction.

In this way, the formwork panel 12 formed by laminating the heat insulating inner wall 121 and the reinforced outer wall 122 is fixed by the support member of the panel fixing means 70, and is enclosed by the plurality of formwork panels 12 so as to provide a predetermined space. In the concrete casting formwork 100 in which the concrete casting space portion 20 is formed by the plurality of formwork panels 12 by maintaining the state, concrete is poured into the concrete casting space portion 20 to form concrete. After solidifying and curing, the bolt / nut configuration 60 can be loosened and disassembled, and the support members such as the horizontal rail 71, the vertical rail 72, and the bolt / nut configuration 60 can be easily removed, and the concrete solidifies. It is possible to construct a civil engineering concrete structure 200 having a concrete skeleton 210 covered with a plurality of integrated formwork panels 12.

In the constructed civil engineering concrete structure 200, the formwork panel 12 integrated with the concrete skeleton 210 is formed by laminating the heat insulating inner wall 121 and the reinforced outer wall 122, so that the concrete skeleton 210 is shielded from the natural environment by the formwork panel 12. Therefore, it is possible to improve heat insulation, sound insulation, high airtightness, fire resistance, durability or earthquake resistance.

In the fourth step ST4, the formwork panel 12 is fixed from the concrete formwork 100 having a structure in which the concrete formwork space 20 is formed by the plurality of formwork panels 12. As shown in FIG. 6, the civil engineering concrete structure 200 constructed by removing and removing the supporting members such as the horizontal rail 71, the vertical rail 72, and the bolt / nut configuration 60 constituting the panel fixing means 70 is shown. Since the mounting hole 13 of the formwork panel 12 into which the formwork fixing rod 40 of the bolt / nut configuration 60 has been inserted is exposed, the mounting hole 13 is filled with a weather-resistant sealing member and sealed. By performing the post-treatment, it is possible to maintain high quality for a long period of time.

Next, with reference to FIGS. 9 and 10, a second embodiment of the present invention is constructed in which the mounting hole 13 of the formwork panel 12 is closed by the sealing bolt 70A to construct a civil engineering concrete structure 200A. Will be described.

9A and 9B are views for explaining the second embodiment of the present invention, and FIG. 9A is a vertical sectional side view showing the structure of the concrete casting formwork 100A in the second embodiment. FIG. 9B is a vertical sectional side view of the civil engineering concrete structure 200A before closing the mounting hole 13 of the formwork panel 12 constructed by the concrete casting formwork 100A with the sealing bolt 70A. (C) is a vertical sectional side view of a civil engineering concrete structure 200A in which a mounting hole 13 of a formwork panel 12 constructed by the concrete casting formwork 100A is closed with a sealing bolt 70A.

Further, FIG. 10 is a perspective view of a civil engineering concrete structure 200A constructed by the concrete casting formwork 100A.

In this second embodiment, in the four-use nut fixing type bolt / nut configuration 60 shown in FIG. 8 (B) in the first embodiment, the panel temporary fixing nut 66 is attached to the thickness of the heat insulating inner wall 121. As shown in FIG. 9 (A), in which the mold fixing rod 40 is divided into two parts and the mold fixing rod 40A and the mold fixing rod 40B are connected by the long nut 66A instead of the long nut 66A having a length corresponding to the above. A bolt / nut configuration 60A having a flexible structure is adopted.

The bolt / nut configuration 60A includes a long nut 66A arranged in the mounting hole 13 of the heat insulating inner wall 121, a mold fixing rod 40A and a mold fixing rod 40B connected by the long nut 66A, and the above-mentioned mold. Frame side mold fixing material 50 and long nut removal prevention member 50A screwed to the frame fixing rod 40A and arranged together with the mold fixing rod 40A in the concrete placing space 20 between the two mold panels 12. It is composed of a vertical rail fixing nut 64 screwed to the mold fixing rod 40B, a vertical rail back fixing nut 65, and a horizontal rail fixing nut 62.

In this bolt / nut configuration 60A, the mold fixing rod 40A has a long nut removal prevention member 50A and a skeleton side mold fixing material 50 mounted, and one end thereof is at the center of the long nut 66A in the longitudinal direction. The long nut 66A is mounted in a state of being screwed until it is positioned, and the long nut 66A is inserted and arranged in the mounting hole 13 of the heat insulating inner wall 121. The long nut removal prevention member 50A also has a function of preventing the reinforced outer wall from falling off, but it is not an essential element.

The long nut 66A arranged in the mounting hole 13 of the heat insulating inner wall 121 is screwed from the heat insulating outer wall 122 side until one end of the formwork fixing rod 40B comes into contact with the tip of the formwork fixing rod 40A. The formwork fixing rod 40B is attached.

In this way, the formwork fixing rods 40A and 40B are connected via the long nut 66A.

Then, the formwork fixing rod 40B is attached and fixed to the cross rail 71 by mounting the cross rail stopper nut 62 at the tip through which the mounting hole 74 of the cross rail 71 is inserted and screwing it. Further, in the formwork fixing rod 40B, the vertical rail backing nut 65 is mounted, and the vertical rail backing nut 65 is mounted at the tip through which the mounting hole 74 of the vertical rail 72 is inserted. And the vertical rail stop nut 64 is screwed to be attached and fixed to the vertical rail 72.

As described above, the horizontal rail 71 and the vertical rail 72 are provided with mounting holes 74 at the intersections assembled in a grid pattern, and the above-mentioned mold penetrating the mounting holes 74 of the horizontal rail 71 and the vertical rail 72. The tip of the frame fixing rod 40B is fixed by a horizontal rail fixing nut 62, a vertical rail back fixing nut 65, and a vertical rail fixing nut 64.
Further, the skeleton side formwork fixing material 50 attached to the formwork fixing rod 40A connected to the formwork fixing rod 40B via the long nut 66A is screwed so that the flange portion 51 thereof is formed. , It abuts on the inner side surface 12b of the formwork panel 12 and supports it in the outward direction of the concrete placing space 20 to regulate the position.

Here, in the concrete casting formwork 100A, the configuration from the center to one end of the formwork fixing rod 40A and the configuration from the center to the other end are symmetrical, and are symmetrical in FIG. The components are designated by the same reference numerals, and detailed description thereof will be omitted. It goes without saying that the configuration may be asymmetrical.

In the concrete casting formwork 100A assembled in this way, the horizontal rail 71 and the vertical rail 72 are the vertical rail fixing nut 64, the vertical rail backing nut 65, and the horizontal rail from the tip side of the formwork fixing rod 40B. By sequentially screwing the rail stop nut 62 in the direction opposite to the mounting direction, the nut 64, the vertical rail back stop nut 65, and the horizontal rail stop nut 62 can be removed from the formwork fixing rod 40B. Further, the formwork fixing rod 40B can also be removed from the long nut 66A by screwing it in the direction opposite to the mounting direction with respect to the long nut 66A.

That is, in the concrete casting formwork 100A of the second embodiment, after concrete is poured into the concrete casting space 20 to be solidified and cured, the horizontal rail fixing nut 62, the nut 64, and the vertical rail back The stop nut 65, the horizontal rail 71, and the vertical rail 72 are removable support members.

In this second embodiment, the concrete casting space portion 20 is configured by the concrete casting formwork 100A having the above-mentioned structure, that is, the plurality of formwork panels 12 fixed by the bolt / nut configuration 60A. After concrete is cast into the concrete casting space 20 of the concrete casting formwork 100A having the above structure, solidified and cured, the bolt / nut configuration 60A is loosened, and the vertical rail fixing nut 64 and the vertical rail are used. The support members are removed in the order of 72, the vertical rail backing nut 65, the horizontal rail fixing nut 62, the horizontal rail 71, and the formwork fixing rod 40B, and are removed as shown in FIG. 9B. That is, the removable support members, that is, the horizontal rail fixing nut 62, the nut 64, the vertical rail back fixing nut 65, the horizontal rail 71, and the vertical rail 72 are removed and removed.

Then, in this second embodiment, as shown in FIG. 9C, the mounting hole 13 of the mold panel 12 is sealed by closing the mounting hole 13 of the mold panel 12 with the sealing bolt 70A. A civil engineering concrete structure 200A closed with a stop bolt 70A is constructed.

In the second embodiment, the civil engineering concrete structure 200A constructed by the concrete casting formwork 100A has a sealing bolt for the mounting hole 13 of the formwork panel 12 as shown in the perspective view of FIG. By closing with 70A, rainwater and the like do not flow into the civil concrete structure 200A from the mounting hole 13 of the formwork panel 12, so that the civil concrete structure 200 is more than the civil concrete structure 200 in the first embodiment described above. High quality can be maintained for a long period of time.

Here, in the first embodiment and the second embodiment, the civil engineering concrete structures 200 and 200A having a linear wall structure are constructed, but the civil engineering concrete structure constructed in the present invention has a linear wall structure. The structure is not limited to the one, and may be a columnar structure or a structure having an arbitrary shape having a curved surface. By placing concrete on the concrete casting molds 100 and 100A using the formwork panel 12 composed of the unit panel 10 having a curved surface corresponding to the shape of the concrete structure for civil engineering to be constructed, the civil engineering having a curved shape. Concrete structures can be constructed.

Further, a steel reinforced outer wall 122 is used for the formwork panels 12 of the concrete casting formwork 100 and 100A for constructing the large-scale civil engineering concrete structures 200 and 200A, and the thickness is 3 m × 6 m. It weighs 42 kg at 3.2 mm and 79 kg at 6 mm, and requires crane work. In that case, since the support member can also be assembled with the large frame block, ordinary steel pipe flutter or the like can be used as the horizontal rail 71 and the vertical rail 72 for the support member.

As described above, according to the present invention, it is possible to provide a civil engineering concrete structure 200 having a concrete skeleton 210 covered with a plurality of formwork panels 12 integrated by solidifying concrete, and it is possible to provide civil engineering concrete. Even if the structure 200 is exposed to wind and rain in a natural environment, the concrete skeleton 210 inside is protected by the weather resistance of the reinforced outer wall 122, and is also protected against changes in the outside temperature by the heat insulating inner wall 121. Therefore, high quality can be maintained for a long period of time.

The life of the concrete cast and cured in the concrete casting space 20 surrounded by the plurality of formwork panels 12 formed by laminating the heat insulating inner wall 121 and the reinforced outer wall 122 is said to be several hundred years. Evaluation results have been obtained.

1 Reinforcing bar, 2 Inner area, 3 Outer area, 4 Fitting convex part, 4a Inner fitting convex part, 4b Outer fitting convex part, 5 Fitting concave part, 5a Inner fitting concave part, 5b Outer fitting concave part, 6 Inner Mating part, 7 outer fitting part, 9 fitting part, 10 unit panel, 11 outer peripheral part, 11a connecting part, 12 formwork panel, 12a outer side surface, 12b inner side surface, 12c panel temporary fixing nut accommodating hole, 13 , 74 Mounting holes, 20 Concrete placement space, 40, 40A, 40B Formwork fixing rods, 50 Formwork fixing material on the skeleton side, 50A long nut removal prevention member, 51 collars, 60 bolts and nuts, 61 males Screws, 62 horizontal rail support nuts, 63 vertical rail backing collars, 64 vertical rail backing nuts, 65 vertical rail backing nuts, 66 panel temporary fixing nuts, 66A long nuts, 67 special thick nuts, 70A sealing bolts, 71 Horizontal rail, 72 Vertical rail, 100 Concrete casting formwork, 121 Insulated inner wall, 122 Reinforced outer wall, G unit panel thickness, H fitting recess opening size, O formwork fixing rod center in the length direction , P crosspiece width, Q crosspiece thickness, R intersection recess, V formwork panel height, W formwork panel width, X gap, Y concrete skeleton wall core, Z unit panel length direction, 200, 200A Concrete structure for civil engineering, 210 concrete formwork

Claims (14)

By fixing the formwork panel formed by laminating the heat insulating inner wall and the reinforced outer wall with the support member of the panel fixing means and maintaining the formwork panel in a state of being enclosed so as to provide a predetermined space by the plurality of formwork panels, the above-mentioned plurality. The concrete casting space is composed of the formwork panel of
Concrete is placed in the above concrete placement space,
Cure the above concrete,
After solidifying the concrete, remove the support member and remove it.
A method for constructing a civil engineering concrete structure, which comprises forming a concrete skeleton covered with the plurality of formwork panels integrated by solidifying the concrete. The method for constructing a civil engineering concrete structure according to claim 1, wherein the heat insulating inner wall is made of foamed synthetic resin or cement mixed with glass wool. The reinforced outer wall is made of any one of a ceramic plate body, a stainless steel plate body, a fiber reinforced plastic plate body, a steel plate body, and a corten steel plate body, according to claim 1 or 2. The construction method of the described civil engineering concrete structure. The civil engineering concrete structure according to claim 1 to 3, wherein a post-treatment is performed in which the mounting holes of the formwork panel exposed to the outside by removing the support member are sealed with a weather-resistant sealing member. Construction method of things. 4. The sealing member is a long nut arranged in a mounting hole of the heat insulating inner wall, and a sealing bolt inserted into the long nut from the reinforced outer wall side and screwed into the long nut. Construction method of civil engineering concrete structure described in. It is a concrete casting formwork used for the construction of a civil concrete structure consisting of a concrete skeleton made of solidified concrete placed in a concrete casting space composed of a plurality of formwork panels and the above-mentioned multiple formwork panels. hand,
With the above multiple formwork panels,
The plurality of formwork panels are fixed by supporting members, and the plurality of formwork panels are provided with panel fixing means for forming the concrete casting space.
The formwork panel is made by laminating a heat insulating inner wall and a reinforced outer wall.
After concrete is placed in the concrete placing space and the concrete is cured, only the support member of the panel fixing means is removed, and the plurality of formwork panels are integrated with the concrete skeleton to form a civil engineering concrete structure. A formwork for placing concrete, which is characterized by being constructed. The concrete casting formwork according to claim 6, wherein the heat insulating inner wall is made of foamed synthetic resin or cement mixed with glass wool. The reinforced outer wall is made of any one of a ceramic plate body, a stainless steel plate body, a fiber reinforced plastic plate body, a steel plate body, and a concrete steel plate body, according to claim 6 or 7. The described concrete casting formwork. The panel fixing means is composed of bolts and nuts arranged in a formwork fixing rod penetrating a mounting hole formed at an intersection of the horizontal rail and the vertical rail, which are combined in a grid pattern with the horizontal rail and the vertical rail. Naru,
The formwork fixing rods are connected via a long nut arranged in a mounting hole of the heat insulating inner wall, and one formwork fixing rod on which the bolt / nut configuration is arranged is formed from the long nut. The concrete casting formwork according to any one of claims 6 to 8, wherein the formwork is removable. Concrete is poured into the concrete casting space formed by fixing a plurality of formwork panels formed by laminating a heat insulating inner wall and a reinforced outer wall by panel fixing means and maintaining the enclosed state so as to provide a predetermined space. It has a concrete skeleton covered with a plurality of formwork panels integrated by removing the support member constituting the panel fixing means after setting and curing the concrete, and solidifying the concrete. A civil engineering concrete structure characterized by this. The civil engineering concrete structure according to claim 10, wherein the heat insulating inner wall is made of foamed synthetic resin or cement mixed with glass wool. The reinforced outer wall is made of any one of a ceramic plate body, a stainless steel plate body, a fiber reinforced plastic plate body, a steel plate body, and a corten steel plate body, according to claim 10 or 11. The civil engineering concrete structure described. The civil engineering concrete structure according to claim 10 to 12, wherein the mounting holes of the formwork panel exposed to the outside by removing the support member are sealed with a weather-resistant sealing member. 13. The sealing member is a long nut arranged in a mounting hole of the heat insulating inner wall, and a sealing bolt inserted into the long nut from the reinforced outer wall side and screwed into the long nut. Civil engineering concrete structure described in.