JP2004257229A - Structure constructing method - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a structure constructing method for constructing a ceiling slab and a floor slab, and repeatedly reusing a form used for construction without applying a cross-sectional chipped part to a ceiling joist and a floor joist. <P>SOLUTION: A length adjustable flat surface molding form material is prepared by the required number. After adjusting this material in the length so that the tip of the respective flat surface molding form materials does not protrude in a molding material filling space of a joist molding form between opposed upper edge and upper edge of the two joist molding forms separated in the horizontal direction, a molding material pouring floor surface is constructed by adjacently extending by the required number. A molding material is poured in the required thickness as a slab into this molding material pouring floor surface. The joist molding form is disassembled by waiting for solidifying this molding material, and respective flat surface molding forms are separated and recovered from a mold. <P>COPYRIGHT: (C)2004,JPO&NCIPI

Description

  The present invention relates to a construction method suitable for constructing a structure having a flat surface, such as a concrete slab or a concrete vertical wall of a multi-layer building.

  Conventionally, in order to construct a concrete slab functioning as a floor or ceiling of a multi-story building at a construction site, a large number of pillars are set up on the floor of the existing lower floor and a gantry that reaches the height of the upper floor is assembled, A large number of wooden plywoods are laid horizontally on this gantry to form a temporary floor for concrete pouring, and concrete is poured into the temporary floor to a predetermined thickness and solidified, thereby connecting concrete between adjacent beams. The slab construction method of completing a slab made of steel was adopted. However, in the slab construction method using this wooden plywood, it takes a lot of time for on-site processing of the wooden plywood and assembling the gantry, and the wooden plywood collected after dismantling the gantry is not reusable, There is a problem that a large amount of waste is generated and the incineration cost is increased.

  As a conventional example not using a wooden plywood, a slab construction method of laying a thin steel plate having a continuous trapezoidal cross section called a deck plate in an area where a slab is to be formed and pouring concrete thereon is also known (for example, And Patent Document 1). However, in the slab construction method using this deck plate, an extra amount of concrete is required by filling the recesses on the deck plate surface with concrete, and the amount of concrete used increases, There is a problem that the height of the floor becomes unnecessarily high because the convex portion protrudes from within the beam height.

  Still another conventional example not using a wooden plywood is a slab construction method using a steel thin plate having a flat surface called a high deck and a reinforcing ridge (rib) along a longitudinal direction on a rear surface side. It has been known. An explanatory view of a slab construction method using this high deck is shown in FIG.

  FIG. 3A shows a state where concrete has been poured after completion of raising the formwork. In the figure, reference numeral 501 denotes a left beam forming mold, and reference numeral 502 denotes a right beam forming mold. The left beam forming mold 501 includes a mold left side plate 501a, a mold right side plate 501b, and a mold bottom plate 501c. The left beam forming form 501 is supported on a beam receiving base 503 via two sleepers 504, 504 and two single pipes (pipe members) 505, 505. The mold left side plate 501a is supported in a vertical posture by an upper cross bar 507 and a lower cross bar 508. The right side plate 501b of the formwork is supported by the upper cross bar 509 and the lower cross bar 510 in a vertical posture. The beam receiving base 503 is horizontally supported by columns (supports) 506 and 506 erected on the floor of the existing lower floor.

  Similarly, the right beam forming mold 502 has a mold left side plate 502a, a mold right side plate 502b, and a mold bottom plate 502c. The beam forming mold 502 on the right side is mounted on a beam receiving base 511 via two sleepers 512 and 512 and two single pipes (pipe materials) 513 and 513. The mold left side plate 502a is supported in a vertical posture by an upper cross bar 514 and a lower cross bar 515. The formwork right side plate 502b is supported in a vertical posture by an upper bar 516 and a lower bar 517. The beam receiving base 511 is horizontally supported by columns (supports) 518 and 518 erected on the floor of the existing lower floor.

  By the way, the high deck 519 is transported to the site in a state where the high deck 519 is cut at a factory in accordance with the interval between beams. Of course, since the high deck is a thin steel plate, it can be reused as many times as the material. However, since the distance between adjacent beams in this type of multi-story building usually differs from site to site, it is not practical to reuse a high deck recovered after use at one site at another site. Is extremely difficult, and retrieving the high deck from the site for re-use can be difficult to store. Therefore, in this type of slab construction method using a high deck, in order to avoid the necessity of recovery from the site, the high deck is left in a state of being bridged between the beams even after completion of the construction (so-called “slashing”). "State").

  Specifically, as shown in FIG. 33A, when the high deck 519 is bridged between the left and right beam-forming molds 501 and 502, the tip 519c of the left end of the high deck 519 in the figure is: In addition to projecting from the inner surface of the mold right side plate 501b by ΔL, the tip 519d at the right end in the drawing is projected by ΔL from the inner surface of the mold left side plate 502a. In this way, after the completion of the slab construction, both ends of the high deck 519 bite into the concrete beams 522 and 523, and the high deck 519 and the slab 524 are integrated, and the high deck 519 is in a so-called killing state. It becomes.

FIG. 33B shows a state in which the high deck 519 has been fitted and killed after the removal of the formwork. As is clear from the figure, when the left and right beam forming molds 501 and 502 are dismantled, the left and right beams 522 and 523 and the slab 524 are exposed. In addition, the end 519c of the end of the high deck 519 projects into the beam 522 as shown in the circle denoted by reference numeral 525 in the figure. Similarly, the opposite end tip 519d also projects into the beam 523. Therefore, the high deck 519 is left on the lower surface of the slab 524 in a state where both ends are cut into the beams 522 and 523.
Japanese Utility Model Application Laid-Open No. 5-67716 (Page 1, Page 2, FIG. 1)

  In the slab construction method using the above-mentioned high deck, since the surface of the high deck is flat, compared to the slab construction method using the deck plate, the amount of concrete used can be reduced, As described above, since the convex portion on the surface does not protrude from the inside of the beam height, there is an advantage that the floor height does not become unnecessarily high.

  However, in the slab construction method using a high deck, even if the slab is collected after the construction is completed, the slab will be killed because it is difficult to reuse it at other sites due to differences in beam spacing. As a result, the following problems occur.

  First, there is a problem that the strength of the beam is reduced due to the cross-sectional defect. That is, as described above with reference to FIGS. 33 (a) and (b), in order to fit and kill the high deck, both ends 519a and 519b of both ends of the high deck 519 are long at the bases of the beams 522 and 523. It is necessary to make it penetrate only by ΔL. From a different point of view, this means that the base portions of the beams 522 and 523 have a cross-sectional defect by the height of the high deck. Therefore, the strength of the beams 522 and 523 must be reduced by the amount corresponding to the occurrence of the cross-sectional defect. It is also conceivable to increase the thickness of the beam excessively from the design stage in consideration of the decrease in the strength of the beam due to the cross-sectional defect. However, such a measure increases the amount of concrete to be used and increases the cost, so that such a measure is hardly adopted. Actually, at present, few designers know that the strength of the beam is reduced due to such a reason at the time of construction. Therefore, in reality, in many multi-story buildings, it is presumed that the strength of the beam is reduced due to the section loss due to the hitting of the high deck, and the situation is quite serious.

  Second, there is a problem of dew condensation on the high deck exposed on the lower surface of the slab. That is, since the high deck is made of metal, when the high deck is exposed to the atmosphere, dew condensation easily occurs on the surface. To avoid this, it is necessary to apply asbestos or the like to the exposed surface of the high deck as a countermeasure against dew condensation, which leads to an increase in cost.

  Third, there is a problem of construction after opening a through hole in the slab. In other words, when forming an opening in the slab, since the high deck is in a killing state, it is necessary to make a hole in the high deck corresponding to the opening of the slab with a cutting machine, etc. It takes time and effort.

  The present invention has been made in view of the conventional problems as described above, and an object thereof is to construct a ceiling slab or a floor slab without giving a sectional defect to a ceiling beam or a floor beam. It is an object of the present invention to provide a method of constructing a structure that can perform a slab construction and in which a form material can be repeatedly reused.

  Another object of the present invention is to be able to construct a vertical wall of a multi-story building, and to collect formwork for the construction of the vertical wall after completion of the construction, and to collect another form of the vertical wall having a different floor height. An object of the present invention is to provide a method of constructing a structure that can be reused for constructing a body.

  Still other objects and operational effects of the present invention will be easily understood by those skilled in the art by referring to the description in the following specification.

  The method of constructing a structure according to the present invention is characterized in that the mold material for slab molding is made repeatedly reusable, and includes the following four steps.

  That is, in the first step, two flat plates having a flat surface serving as a forming surface and reinforced so as to withstand the weight of the molding material are combined with the rear end of one flat plate and the front end of the other flat plate. A required number of flat-surface forming mold members having an adjustable length, which are slidably coupled in the front-rear direction with the parts overlapping each other, are prepared.

  In the second step, the flat-surface forming form material prepared in the first step is placed between the opposed upper edges of the two beam forming forms separated in the horizontal direction. In addition, after adjusting the length so that the tip of each flat surface forming form material does not protrude into the forming material filling space of the beam forming form, the forming material is poured by adjoining the required number of sheets. Build a floor for use.

  In the third step, the molding material is poured to a required thickness as a slab on the molding material pouring floor constructed in the second step.

  In the fourth step, after the molding material poured in the third step is solidified, the beam forming mold is dismantled, and each flat surface forming mold is separated and collected from the formed body.

  Since the construction method of the structure of the present invention has the above configuration, it is possible to construct a ceiling slab or a floor slab without giving a sectional defect to a ceiling beam or a floor beam, and for slab construction. There is an advantage that the formwork material can be reused repeatedly.

  The following configuration may be employed as a flat surface forming mold material suitable for the construction method of the present invention. That is, the flat-surface forming mold material includes a flat plate portion having a flat surface serving as a forming surface, and a reinforcing ridge projecting to the back side of the flat plate portion and extending linearly in the front-rear direction of the flat plate portion. A first form member having a flat plate portion serving as a molding surface, a reinforcing ridge projecting to the back side of the flat plate portion and extending linearly in the front-rear direction of the flat plate portion, And a second mold member having the following. Here, the reinforcing ridge may be formed by projecting a flat plate portion to the back side by pressing, or may be formed by attaching a ridge component to the back side of the flat plate portion.

  The cross-sectional shape of the predetermined length portion of the reinforcing ridge on the rear end side of the first form member, and the cross-sectional shape of the predetermined length portion of the reinforcing ridge on the front end side of the second form member, The two members have a complementary relationship that allows sliding engagement. Here, the complementary relationship includes similar relationships having different sizes.

  Further, the flat members of the two mold members are overlapped with each other at a predetermined length portion on the rear end side of the first mold member or a predetermined length portion on the front end side of the second mold member, and the reinforcing ridge is used. A slide allowance slit is formed to receive a part of the counterpart form member when the parts are slid in a fitted state.

  Further, the predetermined length of the flat plate portion on the front end side of the first mold member and the predetermined length of the rear end portion of the second mold member are reduced in the thickness of the thin-walled mounting margin without the reinforcing ridge. Have been.

  Further, the first mold member and the second mold member are slidably coupled with each other with the flat plate portions overlapped with each other and the reinforcing ridge portions are fitted to each other, so that the first and second mold members are slidable. The length can be adjusted in a predetermined range in the direction.

  The use of the above-mentioned formwork for forming a flat surface can reduce the amount of concrete used compared to the slab construction method using a deck plate, and, as in the case of using a deck plate, The projection does not protrude from within the beam height, and the floor height does not become unnecessarily high.

  In addition, since the length of this formwork material for flat surface molding can be adjusted unlike the high deck, it can be easily adapted to any construction site even if the spacing between beams differs at each construction site. Therefore, it is possible to repeatedly reuse formwork materials, which means that formwork materials used at one site are collected after completion of construction and reused at another site, and the cost of this type of slab construction work is reduced. Significant savings can be made.

  In addition, since the flat-surface forming form material can be repeatedly reused, it is not necessary to crush it on site, and the strength of the beam due to cross-sectional defects, which has been regarded as a problem due to the on-site crushing, has been considered as a problem. The problem of lowering, the problem of dew formation avoidance work, and the problem of opening work that penetrates a slab can be solved at once.

  In the above-mentioned flat surface forming mold material, as the slide allowance slit, the flat plate portion of the form member located on the lower side is separated from the front edge thereof to the left and right, so that it has a linear shape of a predetermined length. May be employed. The slide allowance slit having such a structure receives a connecting portion that vertically connects the flat plate portion of the upper mold member and the reinforcing ridge. For this reason, the first and second mold members are restricted from moving in the left-right direction via the slide allowable slit.

  In the above-described flat surface forming mold material, as the slide allowable slit, a connecting portion between the flat plate portion of the upper mold member and the reinforcing ridge is vertically separated from the front edge to the rear. In this manner, a linearly cut portion having a predetermined length may be employed. The slide allowance slit having such a structure accepts the flat plate portion of the lower frame member. Therefore, the vertical movement of the first mold member and the second mold member is restricted via the slide allowable slit.

  In the above-described flat-surface forming mold material, the interval between the slide-permitting slits is maintained at a predetermined interval from the inner portion of the slide slit to the entrance so that the target flat plate portion can be smoothly received. May be performed. According to such a configuration, when the length is adjusted, the sliding of the first mold member and the second mold member becomes smooth, and the labor of the field worker can be reduced.

  In the above-mentioned flat surface forming mold material, the tip of the reinforcing ridge on the rear end side of the first mold member and / or the tip of the reinforcing ridge on the front end side of the second mold member. Alternatively, it may be made to protrude by a suitable distance from the tip of the corresponding flat plate portion. According to such a configuration, at the time of coupling the first mold member and the second mold member, the reinforcing ridges can be butt-fitted without receiving interference between the flat plate ends. . Therefore, the workability when the first mold member and the second mold member in the separated state are combined and integrated is improved.

  In the above-described flat surface forming form member, the cross-sectional shape of the reinforcing protrusion of the first form member and the cross-sectional shape of the reinforcing protrusion of the second form member are similar to each other, In addition, one of the two reinforcing ridges has a stepped structure divided into a large diameter portion and a small diameter portion in the longitudinal direction, and the small diameter portion is insertable into the other reinforcing ridge. Alternatively, the small diameter portion of the reinforcing ridge on the side having the stepped structure may be formed by drawing. According to such a configuration, the connection between the first mold member and the second mold member is such that the small diameter portion of the reinforcing ridge of one member is larger than the small diameter portion of the reinforcing ridge of the other member. It is realized by being inserted into the diameter part and fitting together. Therefore, the slide connection between the first mold member and the second mold member is very smooth. In addition, since the drawing process is employed to make the reinforcing ridge a stepped structure, the large-diameter portion and the small-diameter portion can be manufactured integrally and with a small number of man-hours. In addition, it is only necessary to use a ridge material having the same thickness for the first and second form members, and to draw only one of those used for any of the form members. Cost reductions can be achieved through standardization. Further, since the drawing process is employed to realize the stepped structure, the strength is improved as compared with the case where the large diameter portion and the small diameter portion are separately formed as separate parts and are joined by welding or the like. At this time, if the cross-sectional shape of the reinforcing ridge is V-shaped, a triangular cross-sectional structure with high bending strength can be obtained, and the material usage fee can be minimized, and the weight can be reduced accordingly.

  It should be noted that a reusable material may be appropriately selected as the material of the flat plate portion, and a thin metal plate (steel plate, aluminum plate, etc.) may be used from the viewpoint of strength and price. The thickness of the flat portion may be determined in consideration of required strength, price and weight. In this embodiment, the thickness is 0.6 mm to 1.6 mm, preferably 0.8 mm to 1.0 mm. Some steel plates are used.

  As described above, according to the method for constructing a slab-compatible structure according to the present invention, a ceiling slab or a floor slab can be constructed without giving a cross-sectional defect to a ceiling beam or a floor beam, and is used for construction. There is an advantage that the used mold can be reused repeatedly.

  Hereinafter, a preferred embodiment of the present invention will be described in detail with reference to the accompanying drawings. It should be noted that, as a reminder, the gist of the present invention is specified only by the appended claims, and the following embodiments are merely examples of the present invention.

  FIG. 1 shows a side view (first embodiment) of a novel flat surface forming mold material (for floor) developed by the inventor of the present invention with the surface thereof facing upward. As shown in FIG. 1, the flat-surface forming form member 1 includes a flat plate portion 101 having a flat surface 101s serving as a forming surface (a surface in contact with a forming material such as concrete) over the entire length, and a flat plate portion 101. A first formwork member 100 having a reinforcing ridge 102 protruding on the back surface side (the lower surface side in the figure) and extending linearly in the front-rear direction (left-right direction in the figure) of the flat plate portion 101; A flat plate portion 151 having a flat surface 151s serving as a molding surface over the entire length; a flat portion 151 protruding from the rear surface side (lower surface side in the drawing) of the flat plate portion 151 and linearly extending in the front-rear direction (left-right direction in the drawing) of the flat plate portion 151. And a second form member 150 having a reinforcing ridge 152 extending to the right.

  As will be described in detail later, the first mold member 100 and the second mold member 150 overlap the flat plate portions 101 and 151 with each other and fit the reinforcing protrusions 102 and 152 with each other. It is slidably connected in this state, and thereby the length can be adjusted in a predetermined range in the front-rear direction.

  FIG. 2 shows an AA line end view and a plan view (first embodiment) of the same frame material (for floor). 1 and 2 (b), the length in the front-rear direction is reduced for convenience of drawing, but the flat plate portion 101 of the first mold member 100 and the second mold member 150 Each of the flat plate portions 151 is formed in a rectangular shape elongated in the front-rear direction. As the material, in this example, a thin steel plate having a thickness of about 0.6 to 1.6 mm, preferably about 0.8 to 1.0 mm is adopted to reduce the weight. The width and the length in the front-rear direction of the formwork material 1 may be appropriately set in accordance with a standard building standard of a target building site. In this example, the width W1 of the flat plate portion 101 and the flat plate portion 151 is 630 mm. Eight types of standards are prepared for the overall length L1 of the form material 1 in the front-rear direction. The length adjustment ranges in the respective standards are 1400 to 1900 mm, 1900 to 2400 mm, 2400 to 2900 mm, 2900 to 3400 mm, 3400 to 3900 mm, 3900 to 4400 mm, 4400 to 4900 mm, and 4900 to 5400 mm. As is apparent from this example, the slide stroke L2 of the overlapping portion 190 in which the flat plate portion 101 (lower side) of the first form member and the flat plate portion 151 (upper side) of the second form member are overlapped is 500 mm. It has been.

  FIG. 3 is a perspective view of the connection side end face of the first mold member (first embodiment), and FIG. 4 is a perspective view of the connection side end face of the second mold member (first embodiment). Have been. As shown in FIG. 3, a reinforcing ridge that protrudes to the rear surface side (the lower surface side in the figure) and extends linearly in the front-rear direction of the flat plate portion 101 is formed on the flat plate portion 101 of the first mold member 100. A section 102 is provided. In the figure, three reinforcing projections 102 are provided at equal intervals in parallel with each other. The spacing between the reinforcing ridges may be determined in consideration of the strength of the steel plate used as the flat plate portion 101 and the weight of the concrete that is the molding material. As shown in the figure, the reinforcing projection 102 has a narrow strip 102a having a linear cross section and a thick strip 102b having a hollow triangular cross section. The reinforcing protrusion 102 having such a cross-sectional shape is formed by bending a thin steel plate constituting the flat plate portion 101 by press working. In particular, the narrow strip portion 102a is joined by spot welding at an appropriate position in the longitudinal direction so as to prevent two opposed and closely contacting steel plates from opening. On the left side edge portion of the flat plate portion 101 in the drawing, a connecting protruding piece 104 formed by bending a steel plate forming the flat plate portion 101 at right angles to the back surface side is provided. The connecting projection 104 is inserted into the connecting slit 106 (see FIG. 2B) of the adjacent frame member 1 when a plurality of frame members 1 are arranged in parallel. In the figure, the steel plate forming the flat plate portion 101 is bent by press working to form the reinforcing ridge portion 102. However, the flat plate portion 101 and the reinforcing ridge portion 102 are formed as separate parts, and both are formed. Can be obtained by welding.

  As shown in FIG. 4, the flat plate portion 151 of the second mold member 150 is provided with a reinforcing protrusion 152 that protrudes to the rear surface side and extends linearly in the front-rear direction of the flat plate portion 151. . As is apparent from the figure, the reinforcing projection 152 has a narrow strip 152a having two parallel linear cross sections and a thick strip 152b having a hollow triangular cross section. In the same manner, such a reinforcing projection 152 is formed by bending a thin steel plate constituting the flat plate portion 151 by press working. It should be noted that in the figure, two opposed steel plates are drawn wide open in the narrow strip portion 152a. This is somewhat exaggerated than it actually is in order to draw the slide allowance slit 157 clearly.

  In this manner, as shown in FIG. 2B, the slide allowance slit 157 moves the flat plate portion 151 of the form member 150 located on the lower side from the front edge (the rear end 107 in the figure) to the rear (FIG. 2B). In this case, a predetermined length (L2) is cut in a straight line so as to be separated into right and left (in the front), and the slide allowance slit 157 reinforces the flat plate portion 101 of the upper frame member 100. The narrow strip 102a that connects the projecting strip 102 up and down is received. More specifically, of the tears extending in the front-rear direction generated on the surface of the flat plate portion 101, a portion corresponding to the joining region 101p is closed by spot welding, and a portion corresponding to the non-joining region 101q is subjected to spot welding. The non-joined area 101q is kept open and does not exist, and functions as the slide allowable slit 157.

  Returning to FIG. 1 and FIG. 2B, a flat mounting margin 103 reinforced at a predetermined length of the front end 105 of the first mold member 100 by backing a steel plate or the like while being thin is provided. Similarly, a flat mounting margin 153 reinforced in a thin state by backing a steel plate or the like is also provided at a predetermined length of the rear end 156 of the second form member 150 in the same manner. Has been. As described later with reference to FIG. 5, these mounting margins 103 and 153 are used when the form material 1 is bridged between the adjacent beam forming forms 125 and 126, and the upper cross bar 133 and the upper Each is mounted on a pier 138.

  As described above, the flat surface forming form member 1 includes the first form member 100 and the second form member 150. The first mold member 100 includes a flat plate portion 101 having a flat surface 101s serving as a molding surface, and a reinforcing ridge protruding on the back side of the flat plate portion 101 and extending linearly in the front-rear direction of the flat plate portion 101. It has a part 102. Similarly, the second mold member 150 has a flat plate portion 151 having a flat surface 151s serving as a molding surface, and protrudes to the back side of the flat plate portion 151 and extends linearly in the front-rear direction of the flat plate portion 151. And a reinforcing ridge 152. The cross-sectional shape (narrow strip 102a, thick strip 102b) of the predetermined length (L2) portion of the reinforcing projection 102 at the rear end 107 side of the first mold member 100, and the second mold member 150 The cross-sectional shape (narrow section 152a, thick section 152b) of the predetermined length (L2) portion of the reinforcing ridge 152 on the front end 155 side of the front end 155 is a complementary relation (in this example, permitting sliding fitting of both). , Similarity). In a predetermined length portion (L2) on the rear end 107 side of the first mold member 100, the flat members 101 and 151 of the two mold members 100 and 150 are overlapped with each other and the reinforcing ridges 102 and A slide allowance slit 157 is formed to receive a part (strip 102a) of the counterpart form member (in this example, the first form member 100) when the member 152 is slid in the fitted state. . A predetermined length portion of the flat plate portion 101 on the front end 105 side of the first mold member 100 is a thin and reinforced mounting margin 103, and a rear end portion 156 of the second mold member 150 is provided. The predetermined length portion on the side is also a mounting margin 153 reinforced with a thin thickness. Then, the first mold member 100 and the second mold member 150 overlap the flat plate portions 101 and 151 in the overlapping portion 190 (the flat plate portion 101 is on the upper side, and the flat plate portion 151 is on the lower side), and The form members 1 are slidably coupled in a state in which the reinforcing ridges are fitted together (the reinforcing ridges 102 are on the inside and the reinforcing ridges 152 are on the outside). The length can be adjusted within a predetermined range (L2). The flat-surface forming mold material 1 thus obtained is adjusted in length according to the interval between the two beams which are appropriately separated, and then the front-end mounting margin 103 and the rear-end mounting margin are adjusted. The slab-forming formwork can be constructed by bridging the beams almost horizontally between the beams via 153 and partially overlapping the adjacent ones.

  Next, a slab construction method using the flat surface forming form member 1 having the above-described configuration will be described in detail with reference to FIGS. FIG. 5 shows a form raising state using the form material 1.

  The slab construction method of the present invention includes four steps including a first step to a fourth step. In the first step, two flat plates having a flat surface serving as a forming surface and reinforced to withstand the weight of the molding material are combined with a rear end of one flat plate and a front end of the other flat plate. The required number of formable flat surface forming frame members which are slidably coupled in the front-rear direction in a state of overlapping are prepared. As the “flat surface forming mold member” referred to here, the flat surface forming mold member 1 described in detail with reference to FIGS. 1 to 4 can be used.

  In the following second step, the flat-surface forming mold material 1 prepared in the first step is placed on the opposed upper edges (upper portions) of the two beam forming molds 125 and 126 separated in the horizontal direction. Between the crosspiece 133) and the upper edge portion (upper crosspiece 138), the front end (the front end 105 of the flat portion 101 and the rear end 156 of the flat portion 151) of each flat surface forming formwork material 1 is connected to the beam forming formwork. After adjusting the length so as not to protrude into the molding material filling cavities 145 and 146 of 125 and 126, the required number of adjacent molding materials are laid adjacent to each other to construct a floor surface for molding material pouring.

  That is, in FIG. 5, reference numeral 125 denotes a left beam forming mold, and reference numeral 126 denotes a right beam forming mold. The left beam forming mold 125 has a mold left side plate 125a, a mold right side plate 125b, and a mold bottom plate 125c. The left beam forming form 125 is supported on a beam receiving base 127 via two sleepers 128, 128 and two pipes (single pipes) 129, 129. The mold left side plate 125a is supported in a vertical posture by the upper cross bar 131 and the lower cross bar 132. Similarly, the mold right side plate 125b is supported in a vertical posture by the upper bar 133 and the lower bar 134. The beam receiving base 127 is horizontally supported by columns (supports) 130, 130 with upper receiving stands that are erected on the floor surface 147 of the existing lower floor.

  Similarly, the right beam forming mold 126 has a mold left side plate 126a, a mold right side plate 126b, and a mold bottom plate 126c. The right beam forming form 126 is supported on a beam receiving base 135 via two sleepers 136 and 136 and two pipes (single pipes) 137 and 137. The mold left side plate 126a is supported in a vertical posture by an upper bar 138 and a lower bar 139. The formwork right side plate 126b is supported in a vertical posture by the upper crosspiece 140 and the lower crosspiece 141. The beam receiving base 135 is horizontally supported by columns (supports) 142, 142 with upper receiving stands erected on the floor of the existing lower floor.

  When the assembling of the gantry and the lifting of the left and right beam-forming molds 125 and 126 are completed in this way, next, the space between the left beam-forming mold 125 and the right beam-forming mold 126 is provided. A large number of the form materials 1 of the present invention are horizontally laid adjacent to each other in a direction orthogonal to the paper surface. Thereby, a floor surface for concrete pouring is formed. The formwork material 1 is supported from below by struts 143 at the overlapping portion 190 via flap angles (stresses for sleepers) 144. Since the first mold member 100 and the second mold member 150 are reinforced over their entire lengths via the reinforcing ridges 102 and 152, respectively, the lower surface of the overlapping portion 190 where they overlap is blown. The support by the pillars 143 through the corners 144 can sufficiently bear the weight of the concrete as the molding material. Since no extra support is basically required, the man-hour for assembling the gantry can be reduced.

  However, in this second step, the front ends (the front end 105 of the first form member 100 and the rear end 156 of the second form member 150) of the flat surface forming form material are connected to the beam forming form 125. , 126 must be adjusted so as not to protrude into the molding material filling spaces 145, 146.

  FIG. 6 shows a method of supporting an end portion of a form material in comparison between the present invention and a conventional example. As shown in FIG. 13B, in the conventional end supporting method, as described above with reference to FIG. 31, the tip of the high deck 519 is required to fit the high deck 519. 519d is made to project into the cavity 523 by ΔL from the inner surface of the mold left side plate 502a. On the other hand, in the end supporting method of the present invention, the length of the form material 1 is adjusted while expanding and contracting as shown by the horizontal double-headed arrow in the figure, and the tip 156 of the form material 1 is adjusted. Is mounted on the upper pier 138 so as not to protrude into the empty space 146. FIG. 6 illustrates the right beam-forming mold 126, but the end supporting method of the left beam-forming mold 125 is also adjusted while adjusting the tip 105 so as not to protrude into the empty space 145. The mounting of the bridge 103 on the upper pier 133 is the same.

  In the subsequent third step, concrete as a molding material is poured into the molding material pouring floor constructed in the second step. FIG. 7 shows a concrete casting state after raising the formwork. As shown in the figure, when concrete is poured onto the floor surface formed by laying a plurality of form materials 1 in parallel, the poured concrete is filled with the empty space 145 of the left beam forming form 125 and the right beam. It flows into each of the voids 146 of the molding frame 126. As a result, as shown in FIG. 7, by pouring concrete into the thickness D, the left and right beams 123 and 124 and the slab 148 to be a floor can be integrally formed.

  In the subsequent fourth step, after the concrete, which is the molding material poured in the third step, is solidified, the beam forming molds 125 and 126 are dismantled, and each flat surface forming mold 1 is removed. It is separated and collected from the slab 148 which is a molded body. FIG. 8A shows a state before the removal of the flat-surface forming mold material. In this example, the left and right beam forming molds 125, 126 have been dismantled. An important point at this time is that neither the leading end 105 nor the rear end 156 of the form material 1 is easily inserted into the beams 123 and 124. Subsequently, the completed state of the concrete slab is shown in FIG. When the support 143 and the flap angle 144 are removed, and the formwork material 1 is removed, beams 123 and 124 having no cross-sectional defects are obtained as shown in the circle with the symbol a.

  In the form member 1 shown in FIGS. 1 to 4, various other structures can be considered for the fitting structure between the first form member 100 and the second form member 150. 9 and 10 show other fitting structures. In the fitting structure shown in FIG. 9A, the two are overlapped such that the flat plate portion 101A of the first mold member is positioned on the upper side and the flat plate portion 151A of the second mold member is positioned on the lower side. In addition, each of the ridges 102A of the first mold member and the ridges 152A of the second mold member has an isosceles triangular cross section. In this case, the slide slit 157A is formed by linearly cutting a predetermined length linearly so as to separate the flat plate portion 151A of the lower frame member from the front edge to the left and right. The constriction that vertically connects the flat plate portion 101A of the upper mold member and the reinforcing ridge portion 102A is received by the slide allowance slit 157A.

  In the fitting structure shown in FIG. 9 (b), the flat part 101B of the first form member is placed on the upper side, the flat part 151B of the second form member is placed on the lower side, and the two parts are overlapped. Each of the protruding portions 102B of the form member and the protruding portions 152B of the second form member have an inverted T-shaped cross section. In this case, the slide allowance slit 157B is formed by cutting the flat plate portion 151B of the lower mold member left and right from the front edge thereof to the left and right in a linear shape of a predetermined length. By the slide allowance slit 157B, a connecting portion for vertically connecting the flat plate portion 101B of the upper mold member and the reinforcing ridge portion 102B is received.

  The fitting structure shown in FIG. 10 does not form a ridge by bending a single thin steel plate by pressing, but fixes the flat plate and the reinforcing ridge as separate parts by welding. It is like that. Furthermore, in this example, unlike the examples of FIGS. 1 to 9, the ridge of the first form member does not surround the ridge of the second form member. That is, as shown in FIG. 10A, in the joint portion of the first mold member, the flat plate portion 101C and the ridge portion 102C having an L-shaped cross section welded and fixed to the back surface side thereof. Have. In addition, as shown in FIG. 3B, the connecting portion of the second mold member includes a flat plate portion 151C having a slide allowable slit 157C, and an L-shaped ridge portion welded and fixed to the back surface thereof. 152C. That is, the slide allowance slit 157C is formed by cutting the flat plate portion 151C of the lower frame member left and right from the front edge thereof to the left and right in a linear shape of a predetermined length. As shown in FIG. 10 (c), the connecting portion for vertically connecting the flat plate portion 101C of the upper frame member and the reinforcing ridge 102C is received by the slide allowable slit 157C.

  In this manner, the first form member and the second form member are slidably coupled to each other in a state where the flat plate portions are overlapped with each other and the reinforcing projections are fitted together. Various structures can be adopted as the combined structure. Therefore, the cross-sectional shape of the predetermined length portion of the reinforcing ridge on the rear end side of the first form member, and the cross-sectional shape of the predetermined length portion of the reinforcing ridge portion on the front end side of the second form member. Will be understood as long as they have a complementary relationship that allows a sliding fit between them. In addition, a predetermined length portion on the rear end side of the first form member or a predetermined length portion on the front end side of the second form member has two flat plate portions that are overlapped with each other by a reinforcing projection. It will also be understood that it is important that the slide allowance slits 157A to 157C are formed to receive a part of the counterpart form member when the strips are slid in a fitted state.

  Next, FIG. 11 is a bottom perspective view (second embodiment) showing the separated state of the flat surface forming mold material (for floor). The features of the flat surface forming form member (for floor) according to the second embodiment are as follows: (1) The flat plate portion and the reinforcing ridge portion are separate parts, and both are joined by welding; (2) The slide allowance slit is formed by cutting a flat plate portion and a reinforcing ridge portion of the form member located on the upper side linearly by a predetermined length so as to be vertically separated from the front edge thereof to the rear. In addition, the flat plate portion of the lower mold member is received by the slide allowance slit. (3) The ridge portion on the first mold member side or the second mold member side. Has a stepped structure divided into a small-diameter portion and a large-diameter portion. (4) The interval between the slide-allowing slits is set so that the target flat plate portion can be smoothly received. So that an almost constant interval is maintained from (5) The front end of the reinforcing ridge on the rear end side of the first mold member and / or the front end of the reinforcing ridge on the front end side of the second mold member is moved to a corresponding flat plate portion. In order to avoid interference between the tips of the flat plate portions when the first and second mold members are joined together.

  As shown in FIG. 11, the mold material 2 for forming a flat surface has a first mold member 200 and a second mold member 250. The first mold member 200 includes a flat plate portion 201 having a flat surface 201 s (see FIG. 13) serving as a molding surface over the entire length thereof, and a first projecting member projecting toward the back surface of the flat plate portion 201 and extending in the front-rear direction of the flat plate portion 201. And a reinforcing ridge 202 extending linearly. In this example, the reinforcing ridge 202 has a stepped structure having a small diameter portion 202a and a large diameter portion 202b. Details of the small diameter portion 202a and the large diameter portion 202b will be described later. On the other hand, the second mold member 250 includes a flat plate portion 251 having a flat surface 251s (see FIG. 14) as a molding surface over its entire length, and a second protrusion 250 protruding from the back surface side of the flat plate portion 251 and extending in the front-rear direction of the flat plate portion 251. And a reinforcing ridge 252 extending linearly to the side. The reinforcing protrusion 252 on the second mold member 250 side has a constant diameter or thickness over the entire length.

  FIG. 12 shows a configuration diagram of the first mold member (second embodiment), and FIG. 13 shows a cutaway end view of the first mold member (second embodiment). As is clear from these figures, in this example, a small-diameter steel tube 203 which is a metal tube is used for the small-diameter portion 202a constituting the reinforcing ridge 202, and a large-diameter portion 202b is similarly used. A large-diameter steel pipe 204 which is a metal pipe is used. After the base of the small-diameter steel pipe 203 is inserted into the large-diameter steel pipe 204, it is firmly fixed by an appropriate connecting means. As the connecting means, an appropriate method such as welding, press fitting, screwing, or the like can be adopted. The large-diameter steel pipe 204 is fixed to the back surface of the flat plate portion 201 of the first mold member by spot welding via left and right L-shaped brackets 205 and 206. More specifically, the spot welding portions are located between the left and right L-shaped brackets 205 and 206 and the back surface of the flat plate portion 201 and between the left and right L-shaped brackets 205 and 206 and both side surfaces of the large-diameter steel pipe 204. Is set. The outer diameter of the small-diameter steel pipe 203 and the inner diameter of the large-diameter steel pipe 204 are substantially the same. Therefore, as shown in FIGS. 12B and 13B, a substantially constant interval d is maintained between the flat plate portion 201 of the first mold member and the small-diameter steel pipe 203 over the entire length thereof. The slide allowable slit 208 is formed. In other words, the slide allowance slit 208 separates the connecting portion between the flat plate portion 201 of the upper mold member and the reinforcing ridge portion 203 upward and downward from the front edge thereof to a predetermined position. It is cut and formed in a linear shape. As shown in FIG. 12, the distal end 209 of the small-diameter steel pipe 203 constituting the small-diameter portion 202 a is in a state of protruding from the edge 208 of the flat plate portion 201 by a distance L3. Further, a mounting margin 207 is provided on the edge of the flat plate portion 201 opposite to the edge 208, which is reinforced with a thin wall by backing a steel plate or the like.

  FIG. 14 shows a configuration diagram (a second embodiment) of the second mold member. As shown in the figure, the protrusion 252 on the side of the second form member has a constant thickness or diameter over its entire length, and similarly, a steel pipe 253 which is a metal pipe material is used. I have. The steel pipe 253 is fixed to the rear surface of the flat plate portion 251 by spot welding via left and right L-shaped brackets 254 and 255. More specifically, the spot welding portions are set between the left and right L-shaped brackets 254 and 255 and the flat plate portion 251, and between the left and right L-shaped brackets 254 and 255 and the left and right side surfaces of the steel pipe 253. You. Incidentally, reference numeral 256 denotes a mounting allowance. The same steel pipe 253 on the second form member and the large-diameter steel pipe 204 on the first form member are used. Therefore, the inner diameter of the steel pipe 253 is substantially the same as the outer diameter of the small-diameter steel pipe 203 on the first form member side.

  FIG. 15 shows a bottom view (second embodiment) of the flat surface forming mold material (for floor) in the middle of joining. As shown in the figure, the first mold member 200 and the second mold member 250 partially overlap the flat plate portions 201 and 251 with each other, and the reinforcing protrusions (the first The small-diameter steel pipe 203 on the form member side and the steel pipe 253) on the second form member side are slidably coupled in a fitted state, whereby the length can be adjusted in a predetermined range in the front-rear direction.

  More specifically, when the first mold member 200 and the second mold member 250 are brought close to each other in abutting state, first, the tip of the small-diameter steel pipe 203 on the first mold member side is set. 209 is inserted into the inlet opening of the steel pipe 253 on the side of the second form member, and then the first form member 200 is further moved closer to the second form member 250. By receiving the flat plate portion 251 of the second mold member into the slide allowable slit 208, the two are slidably coupled within a predetermined stroke range. At this time, since the interval d of the slide allowable slit 208 is kept constant over the entire length, the flat plate portion 251 of the second form member is smoothly inserted into the slide allowable slit 208, and The slide operation can be performed with a light force.

  In order to fix the slide at an appropriate slide position, the slide can be fixed at an appropriate length by inserting an appropriate pin into the overlapping portion of the flat plates 201 and 251 or by screwing.

  FIG. 16 shows a configuration diagram (a second embodiment) of a combined state of a flat surface forming form member (for a floor). As shown in the figure, when the two mold members 200 and 250 are combined, the flat plate portion 200 of the first mold member is moved upward and the second mold is formed, as shown in FIG. Both flat portions are overlapped with the flat portion 250 of the frame member being on the lower side. The small-diameter steel pipe 203 on the first mold member side is inserted into the steel pipe 253 on the second mold member side. As is clear from the figure, since both the steel pipes 203 and 253 are circular (similar shapes), the fitting of the steel pipes 203 and 253 is reliable and the slide can be performed smoothly.

  As described above, according to the flat surface forming form member 2 according to the second embodiment, the flat plate portions 201 and 251 and the reinforcing protrusions 202 and 252 are formed as separate components, and the two are joined by welding. Due to the structure, the number of manufacturing steps is reduced and the cost can be reduced as compared with the first embodiment using press working. In the second embodiment, since the stepped structure is employed as the configuration of the reinforcing ridge 202 on the side of the first form member, the distance d between the slide allowable slits 208 is set over the entire length thereof. It is almost constant. Therefore, when the two frame members 200 and 250 are connected, the sliding between the two can be performed smoothly. Further, since the tip 209 of the reinforcing ridge 202 on the first mold member side protrudes by a distance L3 from the edge of the flat plate portion 201, when the joining of both mold members 200 and 250 is started, both molds are started. The flat portions 201 and 251 of the members do not interfere with each other, and the tip 209 of the reinforcing ridge 202 on the first form member side is connected to the reinforcing ridge 252 on the second form member 250 side. It can be reliably and easily inserted into the tip.

  According to the flat-surface forming mold material 2 of the second embodiment having such a configuration, in the same manner as the mold material 1 of the first embodiment, the shape is adjusted to the interval between the two beams appropriately separated. After the length is adjusted, the beams are bridged substantially horizontally between the beams via the front-end-side mounting margin 207 and the rear-end-side mounting margin 256, and the adjacent ones are partially overlapped with each other. And a slab molding form can be constructed. At this time, by adjusting the length so that the tip of each flat surface forming mold material does not protrude into the molding material filling space of the beam forming mold, it is possible to prevent the target beam from having a cross-sectional defect. As described above.

  FIG. 17 is a bottom perspective view (third embodiment) showing the separated state of the flat surface forming form member (for floor). The feature of the third embodiment is that, in addition to the features of the second embodiment, the stepped structure of the reinforcing ridge is realized by drawing, and the cross section of the reinforcing ridge has a V-shape. I did it.

  As shown in FIG. 17, the flat-surface forming form member 3 of the third embodiment includes a flat plate portion 301 having a flat surface 301s (see FIG. 19) as a forming surface over the entire length thereof, and a flat plate portion 301. There is a reinforcing ridge 302 projecting from the rear surface side of the flat plate 301 and extending linearly in the front-rear direction of the flat plate portion 301. The reinforcing protrusion 302 has a stepped structure having a small-diameter portion 302a and a large-diameter portion 302b in the same manner as in the second embodiment. Each of the small diameter portion 302a and the large diameter portion 302b has a V-shaped cross section. The second mold member 350 has a flat plate portion 351 having a flat surface 351s (see FIG. 21) serving as a molding surface, and protrudes from the back surface side of the flat plate portion 351 and extends linearly in the front-rear direction of the flat plate portion 351. And a reinforcing ridge 352. The reinforcing ridge 352 has a constant thickness or diameter over its entire length (see FIG. 21).

  As the material of the flat portions 301 and 351, a thin steel plate is used as in the first embodiment. As will be described in detail later, a similar thin steel plate is used as a material of the reinforcing projections 302 and 352.

  FIG. 18 is a configuration diagram of the first mold member (third embodiment), and FIG. 19 is a cutaway end view of the first mold member. As shown in FIG. 18A, the reinforcing protrusion 302 of the first mold member has a step having a small-diameter portion 302a located on the coupling end side and a large-diameter portion 302b located on the opposite side. The structure is attached. As shown in FIG. 19, the cross sections of the small diameter portion 302a and the large diameter portion 302b are both V-shaped. The reinforcing projections 302 are fixed to the rear surface of the flat plate portion 301 by spot welding via left and right mounting flanges 302c and 302d provided on left and right side edges of the large diameter portion 302b. As shown in FIG. 19, the cross-sectional shapes of the small diameter portion 302a and the large diameter portion 302b are both V-shaped. As shown in FIG. 18B, between the small diameter portion 302a and the back surface of the flat plate portion 301, a slide allowable slit 305 having substantially the same interval d is formed over the entire length.

  FIG. 20 is an explanatory diagram of the structure of the large diameter portion and the small diameter portion. As shown in the figure, the small-diameter portion 302a and the large-diameter portion 302b constituting the stepped structure are realized by so-called drawing. In the small diameter portion 302a, a left inner folded piece 302e and a right inner folded piece 302f are formed by folding the original flange portion inside the V-shape. As a result, as shown in FIG. 18B, a slide allowable slit 305 is formed between the flat plate portion 301 and the small diameter portion 302a of the ridge. As shown in FIG. 18, the distal end 303 of the small-diameter portion 302a protrudes by a distance L3 from the coupling-side edge 304 of the flat plate portion 301, so that the first form member 300 and the second form The connection with the member 350 can be started smoothly.

  FIG. 21 shows a configuration diagram (third embodiment) of the second mold member. In the second form member 350, the thickness or diameter of the reinforcing ridge 352 is substantially constant over its entire length. More specifically, the cross-sectional shape of the reinforcing ridge 352 on the side of the second form member is the cross-sectional shape of the large-diameter portion 302b of the reinforcing ridge 302 of the first form member described above. It has the same V-shape as the shape. The reinforcing projection 352 is fixed to the rear surface of the flat plate portion 351 by welding via mounting flanges 352a and 352b formed on both right and left side edges. Incidentally, reference numeral 353 denotes a mounting margin reinforced by backing a steel plate or the like while keeping it thin.

  FIG. 22 is a cross-sectional view (third embodiment) of a joint portion between the first mold member 300 and the second mold member 350. As can be seen from the drawing, when the first mold member 300 and the second mold member 350 are brought closer to each other with their axes aligned, the small-diameter portion 302a on the first mold member side becomes the second mold member. It is inserted into the tip of the reinforcing ridge 352 on the side of the form member, and then the flat plate part 351 on the side of the second form member is inserted into the slide allowable slit 305 formed on the side of the first form member. As a result, both slides are connected. That is, the slide allowance slit 305 separates the flat plate portion 301 and the reinforcing ridge small-diameter portion 302a of the form member located on the upper side vertically from the front end side to the rear side, so that a straight line of a predetermined length is formed. The flat plate portion 351 of the lower frame member is received by the slide allowance slit 302a. As a result, as shown in FIG. 22, the small-diameter portion 302a of the reinforcing ridge on the first mold member side is inserted into the reinforcing ridge 352 on the second mold member side. As is clear from the figure, since the cross-sectional shape of the small-diameter portion 302a and the cross-sectional shape of the reinforcing ridge 352 are similar to each other, the two fit tightly and fit and slide smoothly in that state. Become.

  Next, FIG. 23 shows a rear view (fourth embodiment) of a flat surface forming mold material (for a wall). The form member 4 shown in the fourth embodiment is suitable for forming a wall of a multi-story building.

  As is clear from the drawing, the flat surface forming mold member 4 has a first mold member 400 and a second mold member 450. The first mold member 400 has a flat plate portion 401 having a flat surface 401 s (see FIG. 24) serving as a molding surface, and protrudes from the back surface side of the flat plate portion 401 and extends linearly in the front-rear direction of the flat plate portion 401. And a reinforcing ridge 402. On the other hand, the second mold member 450 includes a flat plate portion 451 having a flat surface 451s (see FIG. 24) serving as a molding surface, and a straight line protruding to the back side of the flat plate portion 451 and extending in the front-rear direction of the flat plate portion 451. And a reinforcing ridge 452 extending to The reinforcing ridge 452 on the second mold member side has a stepped structure including a small diameter portion 452a and a large diameter portion 452b. As shown in FIG. 25, a small-diameter steel pipe 456 is used as the small-diameter section 452a, and a large-diameter steel pipe 457 is used as the large-diameter section 452b. Similarly, the same steel pipe 406 as the large-diameter steel pipe 457 is used as the reinforcing ridge 402 on the first mold member side. The steel pipe 406 on the first mold member side is fixed to the back side of the flat plate portion 401 by spot welding via left and right L-shaped brackets 407 and 408. Similarly, the large-diameter steel pipe 457 on the second mold member side is also fixed by spot welding to the rear surface side of the flat plate portion 451 via left and right L-shaped brackets 458 and 459. As a result, as shown in FIG. 25, the cross-sectional shape of the predetermined length portion of the reinforcing ridge 402 on the rear end side of the first form member 400 and the front end side of the second form member 450 The cross-sectional shape of the predetermined length portion (that is, the small-diameter portion 452a) of the reinforcing projection 452 has a similar relationship (in this example, concentric circles having different diameters) that allow the two to be fitted by sliding.

  As shown in FIG. 24, a predetermined length portion on the front end side of the second form member 450 includes both form members 400, 450 where the flat plate portions 401, 451 overlap each other and the reinforcing ridge portion is used. When sliding (the steel pipe 406 and the small-diameter steel pipe 456) are fitted to each other, a slide allowable slit 470 for receiving the flat plate portion 401 on the first mold member side is formed. As shown in FIG. 25, a right-angle bent piece 403 is formed on the left edge of the flat plate portion 401 of the first form member 400, and a right-angle bent piece 404 is formed on the right edge. Similarly, a right-angle bent piece 453 is formed on the left edge of the flat plate portion 451 of the second form member 450, and a right-angle bent piece 454 is formed on the right edge. Incidentally, 403a and 404a are also right angle bent pieces. Further, a crosspiece 405 extending in the left-right direction is lined with a front end of the flat plate portion 401 of the first formwork member 400, and similarly, at a rear end of the flat plate portion 451 of the second formwork member 450. A crosspiece 455 extending in the left-right direction is also backed. As a result, the flat surface forming form member 4 having the above configuration is reinforced at the front end and the rear end with the crosspieces 405, 455, and the right and left side edges are bent at right angles 403, 404, 453, and 403. It is reinforced firmly by 454. As shown in FIG. 24, the distal end 456a of the small-diameter steel pipe 456 of the second form member 450 protrudes by a distance L3 from the edge 451a of the flat plate portion 451 of the same form member. At the time of joining the members 400 and 450, consideration has been given to facilitate the fitting of the ridges. Therefore, as shown in FIG. 25, the first mold member 400 and the second mold member 450 overlap the flat plate portions 401 and 451 with each other, and connect the reinforcing protrusions 406 and 456 with each other. It is slidably coupled in the fitted state, whereby the length can be adjusted in a predetermined range in the front-rear direction.

  Next, a method for constructing a wall using the above-described form member 4 will be described. This wall construction method includes four steps of first to fourth.

  In the first step, two flat plates having a flat surface serving as a forming surface and reinforced to withstand the weight of the molding material are combined with a rear end of one flat plate and a front end of the other flat plate. The required number of formable flat surface forming frame members, which are slidably coupled in the front-rear direction in a state where they are overlapped, are prepared. As the "flat surface forming mold material" referred to here, the mold material 4 described above with reference to FIGS. 23 to 25 can be used. In the following second step, the length of the flat surface forming form material prepared in the first step is adjusted between the floor and the ceiling beam in accordance with the floor height of each floor, and then the desired shape is obtained. By forming the molding surfaces facing each other at a distance corresponding to the wall thickness and bridging adjacent to each other, a wall molding form for pouring the molding material is constructed (see FIG. 26). In a subsequent third step, a molding material is poured into the wall forming formwork constructed in the second step. In the following fourth step, the molding material poured in the third step is solidified, the mold for wall molding is disassembled, and each mold for flat surface molding is separated and collected from the molded body. .

  FIG. 26 is a perspective view (fourth embodiment) showing the assembled state of the flat plate forming mold member (for the wall) 4. As shown in the figure, when used for molding a wall, the form members 4 are opposed to each other in a vertical position at a distance corresponding to the thickness of the target wall, and are arranged in two rows. Is done. The wall is formed by pouring concrete into the void 490 formed between the two form rows arranged opposite to each other.

  As is clear from the figure, since each of the frame members 4 and 4 is arranged so as to face the flat surface 401s, which is the molding surface, inward, the worker who assembles the frame members needs the adjacent frame members 4 and 4. , 4 cannot be visually checked whether the molding surfaces are positioned without a step or not vertically displaced. This is extremely inconvenient for workers. Therefore, in the present invention, the right and left right-angle bent pieces 403 and 404 of the first form member 400 and the right and left bent pieces 403 and 404 of the second form member, as shown in a circle denoted by reference numeral 491 in the figure. Positioning holes 460 and 461 are formed in the right-angle bent pieces 453 and 454 at appropriate intervals in order to align the adjacent frame members 4.

  That is, as shown in FIG. 27, a positioning hole 460 is formed in the right-angle bent piece 454 on the right side, and a positioning hole 461 is formed in the right-angle bent piece 453 on the left side. These positioning holes are designed so that the centers coincide with each other only when the adjacent form members 4 and 4 are exactly aligned in front and rear, right and left, and up and down. Therefore, as shown in FIG. 27 (b), the positioning holes 460, 461 are aligned with each other while adjusting the positions of the two bent pieces 454, 453, and shown in FIG. 27 (b). As described above, if the insertion shaft portion 462a of the stopper 462 is inserted into the positioning holes 460 and 461, and the holding portion 462b is attached so as to sandwich the two folded pieces 454 and 454, the adjacent two pieces are adjacent to each other. The two form members 4, 4 can be reliably aligned and easily fixed. The stopper 462 has an insertion shaft portion 462a, a holding portion 462b, and a connecting portion 462c connecting these. Then, the insertion shaft portion 462a is inserted in a state where the positioning holes 460 and 461 are aligned, and then the connecting portion 462c is rotated about the insertion shaft portion 462a as a fulcrum as shown by a double arrow in FIG. For example, the holding portion 462b is in a state of holding the two right angle bent pieces by itself.

  Next, an explanatory view of an application example of a flat surface forming form material (for a wall) to a construction site, FIG. 29 is a rear view of the assembled form material (for a wall), and FIG. In the figure, the facing arrangement state of the flat surface forming form member (for the wall) is shown.

  28, a1, a2, a3, and a4 are ceiling beams on the first, second, third, and fourth floors, respectively, and b1, b2, b3, and b4 are ceiling slabs on the first, second, third, and fourth floors, respectively. It is. As is clear from the figure, the floor heights L12, L23, L34, L45 of each floor decrease as the floor increases. Therefore, in order to assemble the wall formwork according to the floor heights L12, L23, L34, L45 of such a multi-layer building, it is necessary to adjust the length in the height direction. Therefore, in the present invention, a mold for a wall is constructed using the mold members 4 and 4 described with reference to FIGS.

  In FIG. 29, reference numerals 601 and 602 denote steel pipes for holding, and reference numeral 603 denotes an interval regulating tool. As is apparent from the drawing, when the formwork members 4 and 4 of the present invention are arranged and arranged, the upper end and the lower end are firmly reinforced by the crosspieces 405 and 455, and the boundary between the adjacent formwork members 4 and 4 As shown in FIG. 26, the right-angle bent pieces 453 and 454 are joined back-to-back, so that they are firmly reinforced. Therefore, even when concrete is poured into the space 490 in FIG. 26, a force for expanding the form material downward acts due to the liquid head pressure of the concrete, but a force applied from the inside to the outside is exerted. Is firmly received by the reinforcing ridges 402 and 452. Moreover, as shown in FIG. 27 (b), the boundaries between the adjacent formwork 4 and 4 are firmly adhered by the fasteners 402, so that even if the concrete pressure corresponding to the floor height is applied, the molds 4 and 4 will be closed. It is possible to reliably prevent the concrete from leaking from the gap of the frame member 4.

  Note that the distance regulating member 603 shown in FIG. 29 is well known to those skilled in the art. That is, as shown in FIG. 30, the spacing restricting tool 603 includes a spacing adjusting nut 603a, a tube holder 603b, and a wedge bar 603c. Then, when an appropriate distance equivalent to the thickness of the wall body 604 is secured by rotating the gap adjusting nut 603a, the wedge rod 603c is driven through the tube material holder 603b, thereby holding the steel tubes 601 and 602 for holding. By pressing the form members 4 and 4 from behind, the form members can be firmly fixed.

  According to the formwork member 4 described above, since the length in the height direction can be adjusted, as shown in FIG. 28, even if the floor heights L12, L23, L34, and L45 are different, each floor can be adjusted. After adjusting the length Lx in accordance with the floor height of the lower floor, if it is erected vertically between the floor of the lower floor and the ceiling beams a1 to a4, even if it is a common form material, all floor heights L12 , L23, L34, and L45, and the construction cost of such a multi-story building can be significantly reduced.

  23 to 25, the reinforcing ridges 402 and 452 are each made of a steel pipe. However, as shown in FIGS. 31 and 32, the reinforcing ridges 402 and 452 have a U-shaped cross section having a stepped structure. It can be changed to a V-shaped cross section. In particular, if a ridge having a V-shaped cross section is used, weight reduction can be achieved while maintaining strength, and since the V-shaped cross section can be easily formed by press working, it is suitable for mass production, and drawing By using the processing together, it is possible to further reduce the cost and improve the strength. 31 and 32, the same components as those in FIGS. 23 to 25 are denoted by the same reference numerals, and description thereof will be omitted.

  In addition, the use of the flat-surface forming mold material of the first embodiment to the third embodiment described above is not limited to the slab or the wall, but can be arbitrarily applied to each part of the building as appropriate. It is. Further, the material of the flat portion is preferably a metal such as aluminum or a steel plate, but in the future, it may be changed to plastic or the like in accordance with the required strength and price.

It is a side view (1st Embodiment) of the state where the surface of the mold material for flat surfaces (for floors) was turned up. It is an AA line end view and a top view (1st Embodiment) of a flat surface forming form material (for floors). It is a rear end side perspective view of a 1st form member (1st Embodiment). It is a front end side perspective view (1st Embodiment) of a 2nd form member. It is explanatory drawing of a mold raising state. It is explanatory drawing which shows and compares the edge part support method by this invention and the conventional example. It is explanatory drawing which shows the concrete casting state after raising a formwork. It is an operation explanatory view of the present invention. It is a modification (the 1) of a fitting structure. It is a modification (the 2) of a fitting structure. It is a bottom perspective view (2nd Embodiment) which shows the separation state of the flat-surface forming form material (for floors). It is a lineblock diagram (2nd embodiment) of the 1st form member. It is a fracture | rupture end surface figure (2nd Embodiment) of a 1st form member. It is a lineblock diagram (2nd embodiment) of the 2nd form member. It is a bottom view (2nd Embodiment) of the state in the middle of coupling | bonding of the frame material (for floor) for flat surface shaping | molding. It is a block diagram (2nd Embodiment) of the coupling | bonding state of the form material (for floors) for flat surface shaping | molding. It is a bottom perspective view (3rd Embodiment) which shows the separation state of the mold material (for floor) for flat surface shaping. It is a lineblock diagram (third embodiment) of the 1st form member. It is a fracture | rupture end view of a 1st form member. It is a structural explanatory view of a large diameter part and a small diameter part. It is a lineblock diagram (third embodiment) of the 2nd form member. It is sectional drawing (3rd Embodiment) of the joint part of a 1st form member and a 2nd form member. It is a rear view (4th Embodiment) of the mold material (for walls) for flat surface shaping. It is an II line sectional view (fourth embodiment) of a flat surface forming form material (for walls). It is a JJ line sectional view (fourth embodiment) of a flat surface forming form material (for walls). It is a perspective view (4th Embodiment) which shows the assembled state of the mold material (for wall) for flat surface shaping. It is explanatory drawing of the adjacent form fixing method. It is explanatory drawing of the example of application of the mold material (for walls) for flat surface shaping. It is a rear view of the assembled state of the formwork material (for walls). It is explanatory drawing which shows the opposing arrangement | positioning state of the mold material for flat surfaces (for walls). It is sectional drawing of the modification (the 1) of the mold material (for walls) for flat surface shaping. It is sectional drawing of the modification (the 2) of the mold material (for walls) for flat surface shaping. It is explanatory drawing of the conventional method.

Explanation of reference numerals

1, 2, 3, 4 Forming material for flat surface forming 100, 200, 300, 400 First forming member 150, 250, 350, 450 Second forming member 101, 201, 301, 401 First Plate portions 151,251,351,451 of the second frame member 102,202,302,402 Reinforcement protrusions 152,252,352,452 of the first frame member Second Reinforcing ridges 101s, 201s, 301s, 401s of the frame member of the first surface 151s, 251s, 351s, 451s Surfaces of the flat portion of the second frame member 103, 207, 305 Mounting allowance of the first form member 253, 256, 353 Mounting allowance of the second form member 157, 208, 305, 470 Sliding allowable slit 202a, 302a, 452a Small diameter portion 2 2b, 302b, 452b Large diameter portion 403, 403a, 404, 404a Right angle bent piece 453, 454 of the first form member 405 Right angle bent piece of the second form member 405 Upper pier 455 Lower pier 460, 461 Positioning Hole 462 Clasp

Claims (17)

Two flat plates having a flat surface to be the forming surface and reinforced to withstand the weight of the molding material are placed in the front-rear direction with the rear end of one flat and the front end of the other flat overlapping. A first step of preparing a required number of flat-surface forming mold members having an adjustable length, which are slidably coupled to each other;
The flat surface forming form material prepared in the first step is placed between the opposed upper edges of the two beam forming forms separated in the horizontal direction. After adjusting the length so that the end of the mold material does not protrude into the molding material filling space of the beam forming mold, the required number of sheets are placed adjacent to each other to build a floor for casting material A second step to
A third step of pouring the molding material to a required thickness as a slab on the molding material pouring floor constructed in the second step;
Waiting for the molding material poured in the third step to solidify, disassembling the beam forming form, and separating and recovering each flat surface forming form from the formed body. ,
Thus, a method of constructing a structure, characterized in that a mold material for slab molding can be repeatedly reused. Formwork material for flat surface molding,
A first mold frame member having a flat plate portion having a flat surface to be a molding surface, and a reinforcing ridge projecting to the back side of the flat plate portion and extending linearly in the front-rear direction of the flat plate portion;
A second formwork member having a flat plate portion having a flat surface serving as a molding surface, and a reinforcing ridge projecting on the back surface side of the flat plate portion and extending linearly in the front-rear direction of the flat plate portion; Including
The cross-sectional shape of the predetermined length portion of the reinforcing ridge on the rear end side of the first form member, and the cross-sectional shape of the predetermined length portion of the reinforcing ridge on the front end side of the second form member, The two have a complementary relationship that allows slide fitting,
In the predetermined length portion on the rear end side of the first form member or the predetermined length portion on the front end side of the second form member, the flat plate portions of the two form members overlap each other and the reinforcing ridge portions are formed. When sliding in a fitted state, a slide allowable slit for receiving a part of the counterpart form member is formed,
A predetermined length portion of the flat plate portion on the front end side of the first form member, and a predetermined length portion of the rear end portion of the second form member are a suspension allowance without reinforcing ridges,
The first mold member and the second mold member are slidably coupled in a state where the flat plate portions are overlapped with each other and the reinforcing projections are fitted together, so that the first mold member and the second mold member are slidable in the front-rear direction. And the length can be adjusted within a predetermined range,
The method for constructing a structure according to claim 1, wherein: The slide allowance slit is formed in a straight line of a predetermined length so as to separate the flat portion of the formwork member located on the lower side from the front edge to the left and right, and by this slide allowance slit, A connecting portion for vertically connecting the flat plate portion and the reinforcing ridge portion of the form member located on the upper side is received,
The method for constructing a structure according to claim 2, wherein: The slide allowance slit is formed in a straight line of a predetermined length so as to vertically separate the connecting portion between the flat plate portion and the reinforcing ridge portion of the upper form member from the front edge thereof to the rear. By this slide allowance slit, the flat portion of the lower form member is received,
The method for constructing a structure according to claim 2, wherein: The interval between the slide allowance slits is maintained at a substantially constant predetermined interval from the back of the slide slit to the entrance so that the target flat plate portion can be smoothly received.
The construction method of a structure according to claim 4 or 5, wherein The leading end of the reinforcing ridge on the rear end side of the first form member and / or the leading end of the reinforcing ridge on the front end side of the second form member are appropriately distanced from the corresponding flat end. Only when the first and second mold members are joined together, the reinforcing projections can be butt-fitted without interference between the flat plate ends.
A method for constructing a structure according to any one of claims 2 to 5, characterized in that: The cross-sectional shape of the reinforcing ridge of the first form member and the cross-sectional shape of the reinforcing ridge of the second form member are similar to each other, and the two reinforcing ridges have the same shape. One has a stepped structure divided into a large diameter portion and a small diameter portion in the longitudinal direction, and the small diameter portion is insertable into the other reinforcing ridge, and further has a stepped structure. The small diameter portion of the reinforcing ridge on the side is formed by drawing,
The construction method for a structure according to any one of claims 2 to 6, wherein:   The construction method according to claim 7, wherein a cross-sectional shape of the reinforcing ridge is V-shaped. As a material of the flat plate portion and the reinforcing ridge portion, a thin metal plate material is used.
The method for constructing a structure according to any one of claims 2 to 8, wherein: Two flat plates having a flat surface to be a molding surface and reinforced to withstand the weight of the molding material are placed back and forth with the rear end of one flat plate and the front end of the other flat plate overlapping each other. A first step of preparing a required number of flat-surface forming mold members having a length adjustable by being slidably coupled in the directions;
After adjusting the length of the flat surface forming form material prepared in the first step between the floor and the ceiling beam in accordance with the height of each floor, a distance corresponding to a desired wall thickness is provided. A second step of constructing a wall-forming mold for casting material pouring by facing the molding surfaces to face each other and bridging adjacent to each other;
A third step of pouring the molding material into the wall molding form constructed in the second step;
Waiting for the molding material poured in the third step to solidify, disassembling the wall forming form, and separating and recovering each flat surface forming form from the formed body. ,
Thus, a method of constructing a structure, wherein a form material for forming a wall body can be repeatedly reused. Forming material for flat surface molding,
A first mold frame member having a flat plate portion having a flat surface to be a molding surface, and a reinforcing ridge projecting to the back side of the flat plate portion and extending linearly in the front-rear direction of the flat plate portion;
A second formwork member having a flat plate portion having a flat surface serving as a molding surface, and a reinforcing ridge projecting on the back surface side of the flat plate portion and extending linearly in the front-rear direction of the flat plate portion; Including
The cross-sectional shape of the predetermined length portion of the reinforcing ridge on the rear end side of the first form member, and the cross-sectional shape of the predetermined length portion of the reinforcing ridge on the front end side of the second form member, The two have a complementary relationship that allows slide fitting,
In the predetermined length portion on the rear end side of the first form member or the predetermined length portion on the front end side of the second form member, the flat plate portions of the two form members overlap each other and the reinforcing ridge portions are formed. When sliding in a fitted state, a slide allowable slit for receiving a part of the counterpart form member is formed,
Right and left sides of the flat portion of the first form member and right and left sides of the flat portion of the second form member are formed with right-angled bent pieces toward the back surface,
A crosspiece extending in the left-right direction is lined with a front end of the flat portion of the first form member and a rear end of the flat portion of the second form member,
The first mold member and the second mold member are slidably coupled in a state where the flat plate portions are overlapped with each other and the reinforcing projections are fitted together, so that the first mold member and the second mold member are slidable in the front-rear direction. And the length can be adjusted within a predetermined range,
The method for constructing a structure according to claim 10, wherein: The slide allowance slit is formed by cutting a connecting portion between the flat plate portion and the reinforcing ridge portion of the form member located on the upper side up and down from the front edge thereof to the rear, so as to have a linear shape of a predetermined length. By this slide allowance slit, the flat portion of the lower frame member is received,
The construction method of a structure according to claim 11, wherein: The interval between the slide allowance slits is maintained at a substantially uniform interval from the back of the slide allowance slit to the entrance so that the target flat plate portion can be smoothly received.
The method for constructing a structure according to claim 12, wherein: The leading end of the reinforcing ridge on the rear end side of the first form member and / or the leading end of the reinforcing ridge on the front end side of the second form member are appropriately distanced from the corresponding flat end. Only when the first and second mold members are joined together, the reinforcing projections can be butt-fitted without interference between the flat plate ends.
The construction method for a structure according to any one of claims 11 to 13, wherein: The cross-sectional shape of the reinforcing ridge of the first form member and the cross-sectional shape of the reinforcing ridge of the second form member are similar to each other, and the two reinforcing ridges have the same shape. One has a stepped structure divided into a large diameter portion and a small diameter portion in the longitudinal direction, and the small diameter portion is insertable into the other reinforcing ridge, and further has a stepped structure. The small diameter portion of the reinforcing ridge on the side is formed by drawing,
The construction method for a structure according to any one of claims 11 to 14, wherein: The cross-sectional shape of the reinforcing ridge is V-shaped,
The method for constructing a structure according to claim 15, wherein: Positioning holes are provided at appropriate intervals in the left and right right-angle bent pieces of the first form member and the left and right right-angle bent pieces of the second form member in order to align adjacent form materials. Have been born,
The wall construction method according to claim 11, wherein:

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