JP4071142B2 - Beam formwork with beams - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a form for a wall with a beam used when building a wall with a beam in which beams are integrally provided along the upper end of the wall by placing concrete.
[0002]
[Prior art]
Conventionally, for example, in a multi-layer concrete structure, when constructing a wall of each floor, especially a wall in which beams are integrally provided along the upper end portion thereof, first, a reinforcing bar is placed on the wall, and then positioned inside the building. In addition to the wall formwork and column formwork to be constructed, the beam bottom formwork and the beam side formwork are constructed in sequence, and then the wall side formwork, column formwork, beam side formwork, etc. located outside the building are constructed. Like to do. Moreover, when disassembling these, each side formwork, such as a pillar, a beam, and a wall, is disassembled in order (for example, refer patent document 1).
[0003]
[Patent Document 1]
JP 2002-250130 A (page 3-4, FIG. 1)
[0004]
[Problems to be solved by the invention]
As in the above-mentioned Patent Document 1, in order to construct a formwork, many formwork such as wall formwork, beam bottom formwork, and beam side formwork that are partitioned on both sides of the wall with a beam corresponding to each part. Are connected and installed. This is because the beam usually has a bottom surface that intersects the wall surface at a substantially right angle, and a side surface that intersects the same bottom surface at a substantially right angle. This is because if the molds bent together are integrally molded, they are very difficult to peel off during disassembly.
[0005]
More specifically, when the bent formwork is peeled off, it will be peeled off from the upper side of the beam. Usually, the formwork has a certain thickness, and the lower end of the formwork corresponding to the wall, that is, It will rotate about the outer bottom edge of the formwork. However, because the distance from the pivot center to the inner upper edge of the mold corresponding to the wall is longer than the distance from the pivot center to the bottom surface of the beam, the inner upper edge of the mold during the mold rotation. Is supported by the bottom of the beam, and the formwork cannot be peeled off anymore or is difficult to peel off. For this reason, many formwork such as wall formwork, beam bottom formwork, and beam side formwork divided on both sides of the wall with beams must be connected and attached. The construction and dismantling work is troublesome and takes a lot of time and labor, and the work efficiency is extremely poor. In addition, many workers are required, the construction period is prolonged, and the construction cost is high. In addition, since there are too many and various types of molds, there is a problem that the management and movement becomes very complicated.
[0006]
Therefore, the present invention has been made in view of the above problems, and it is possible to continuously form a bent formwork integrally and to remove it as a single panel, thereby reducing the number of formwork and constructing it. -The purpose is to provide a formwork for a wall with a beam that simplifies the dismantling work and improves work efficiency, shortening the construction period and reducing the construction cost.
[0007]
[Means for Solving the Problems]
In order to achieve such an object, the wall formwork with a beam according to the present invention includes a continuous wall formwork part for forming a wall, a beam bottom formwork part for forming a beam, and a beam side formwork part. A wall-shaped formwork body with a beam in which the upper surface of the beam-bottom mold part is gradually lowered from an edge on the beam-side formwork part side to an edge on the wall-formwork part side; A shape-retaining member placed on the upper surface of the beam-bottom mold part and having one side surface that is continuous with the inner side surface of the wall mold part and that the upper surface intersects with the one side surface at a substantially right angle. .
[0008]
So, after building the formwork for the wall with the beam and placing the concrete, when peeling the wall formwork body with the beam, the upper surface of the beam bottom formwork part is the wall from the edge on the beam side formwork part side. Since the upper edge on the inner side of the wall frame is at the lowest position on the bottom of the beam, the beam is centered on the outer lower edge of the wall frame. It can be rotated and peeled off without supporting the attached wall formwork body to remove the frame. In addition, the shape retaining member is placed on the upper surface of the beam bottom mold part, and one side surface is continuous with the inner side surface of the wall mold part, and the upper surface intersects the one side surface at a substantially right angle. Therefore, a beam whose bottom surface intersects with the wall at a right angle is formed at the upper end of the wall.
[0009]
As a result, the construction / demolition work after placing the concrete is remarkably improved, and furthermore, the construction work for the multi-story building can be quickly performed because the work can be moved as it is with the formwork body for the wall with the beam. In particular, since the concrete does not stick to the contact surface between the shape-retaining member and the beam bottom mold part, the beam form wall main body can be easily separated, and the disassembly can be performed smoothly. Further, it is preferable that the lower end of the wall formwork part in the wall formwork main body with the beam substantially reaches the floor surface, so that the wall formwork main body with the beam is formed into a single panel. It can be molded, and its construction and dismantling work can be simplified, increasing work efficiency. However, if it is about one sheet, a wall mold part having a different vertical dimension may be added and connected below the wall mold part.
[0010]
As another configuration of the wall-mounted formwork according to the present invention, a wall formwork part for forming a wall, a beam bottom formwork part and a beam side formwork part for forming a beam are continuously provided. A wall formwork body with a beam that is integrally molded and formed into a flat surface in which the upper surface of the beam bottom mold part intersects at substantially right angles with the inner surface of the wall mold part; and the upper surface of the beam bottom mold part Is formed of a pair of divided members that are stacked one above the other, and one side surface is flush with the inner side surface of the wall frame and the top surface is substantially perpendicular to the one side surface. Intersects to reach the inner surface of the beam-side mold part, and the overlapping surface of both split members gradually decreases from the edge on the beam-side mold part side to the edge on the wall-type frame part side A configuration comprising a shape-retaining member is employed.
[0011]
DETAILED DESCRIPTION OF THE INVENTION
DESCRIPTION OF EMBODIMENTS Hereinafter, embodiments of a wall-mounted formwork according to the present invention will be described with reference to the drawings. In this embodiment, the case where a beam-attached wall is constructed in which a beam is provided only on one side along the upper end of the wall will be described. However, the beam is provided on both sides of the upper end of the wall. Of course, it can be constructed even with a wall. FIG. 1 is a perspective view of a wall formwork with a beam according to the present invention, and FIG. 2 is a perspective view of a wall formwork. As shown in FIG. 1, the beam-attached wall formwork P is composed of a beam-attached wall formwork main body P1 and a shape-retaining member 9 described later.
[0012]
The wall-mounted formwork main body P1 has a wall mold part 1 for forming a wall W to be described later, a beam bottom mold part 2 and a beam side mold part 3 for forming a beam H to be described later. It is continuously formed as one piece, forming a single panel. The wall-mounted formwork body P1 with a beam has, for example, dimensions of a width of 1000 mm, a length of 2700 mm, and a thickness of 100 mm. A plurality of vertical bars 5a and horizontal bars 5b which are spaced apart and parallel to the vertical outer frame 4a or the horizontal outer frame 4b are arranged. The vertical outer frame 4a is shaped so that its cross section is U-shaped, and each vertical bar 5a is shaped like an L shape in cross section. Then, the veneer plates 6a, 6b, and 6c are stretched so as to correspond to the wall mold part 1, the beam bottom mold part 2, and the beam side mold part 3 on one side surface of the outer frame 4, respectively. The veneer plates 6a, 6b, 6c are fixed by screwing screws 12 through through holes (not shown) provided in the vertical bars 5a, 5a. In addition, the plywood 6a corresponding to the wall form frame 1 is provided with bolt insertion holes 7 for inserting tightening bolts 21 to be described later on both upper and lower sides.
[0013]
The upper surface 8 of the beam bottom mold part 2, that is, the upper surface 8 of the plywood 6b, is the edge on the beam side mold part 3 side when the beam-attached wall form body P1 is erected almost perpendicularly to the floor surface. It is formed so as to be linearly and gradually lowered from 8a to the edge 8b on the wall mold part 1 side. In other words, the upper surface 8 of the beam bottom mold part 2 is inclined downward toward the wall mold part 1 side. The inclination angle is usually in the range of 5 to 45 degrees with respect to the horizontal plane, and is selected within a range in which the beam-attached wall formwork main body P1 can be removed after the ready-mixed concrete is placed. And on this upper surface 8, the shape-retaining member 9 for easily performing the dismantling work is placed. The shape-retaining member 9 is made of, for example, wooden, hard synthetic resin, or metal, and is formed into a long plate shape having substantially the same length as the lateral width of the beam-attached wall form body P1. Further, the cross section is a right triangle, and the overlapping surface a which is the longest inclined surface among the three sides is placed so as to coincide with the upper surface 8 of the beam bottom mold part 2. Then, the side surface b is continuous with the inner side surface of the wall mold part 1, that is, the inner side surface 10 of the plywood plate 6a, and the upper surface c intersects the inner side surface 10 at a substantially right angle so that the beam side mold The inner surface of the frame 2, that is, the inner surface 11 of the veneer plate 6 c is reached. Thereby, the upper surface c of the shape retaining member 9 is set substantially horizontal.
[0014]
The wall formwork P2 has approximately the same size and height as the beam-formed wall formwork main body P1, and, like the beam-formed wall formwork main body P1, is a vertically rectangular metal outer frame. A plurality of vertical bars 14a and horizontal bars 14b parallel to the vertical outer frame 13a or the horizontal outer frame 13b are disposed on the inner side of the frame 13 at predetermined intervals. A single veneer plate 15 is stretched on one side of the outer frame 13. Each of the vertical outer frames 13a is also formed to have a U-shaped cross section, and each of the vertical bars 14a is also formed to have an L-shaped cross section. The veneer plate 15 is fixed by screwing the screws 12 through through holes (not shown) provided in the vertical bars 14a. Further, bolt insertion holes 16 are formed in the plywood plate 15 for inserting the fastening bolts 21 at positions corresponding to the respective bolt insertion holes 7 of the wall-mounted formwork main body P1.
[0015]
The above-mentioned beam formwork P and the wall formwork P2 have the above-described configuration, and the construction / disassembly method will be described next. First, as shown in FIG. 3, each of the beam-attached wall formwork main body P1 and the wall formwork P2 is assembled as a set of, for example, five pieces. That is, each wall-mounted formwork main body P1 and wall formwork P2 are arranged continuously in the horizontal direction in the same direction, and in each wall-mounted formwork main body P1, each adjacent vertical outer frame is arranged. 4a and 4a are firmly clamped by the clamping tool 17 arrange | positioned at the upper and lower parts. As shown in FIG. 4, the sandwiching tool 17 includes a U-shaped main rod 17a and a flat L-shaped auxiliary rod 17b, and a screw portion 18 provided at one end of the main rod 17a is connected to the auxiliary rod 17b. By inserting the annular cylindrical portion 19 provided at one end and screwing the nut 20 from the outside, the gap between the other end of the main rod 17a and the other end of the auxiliary rod 17b can be adjusted in a wide and narrow manner. ing. Then, the longitudinal outer frames 4a and 4a are clamped and fixed integrally with the leading end of the main rod 17a and the leading end of the auxiliary rod 17b from the outside. The vertical outer frames 13a and 13a of the wall molds P2 are also clamped in the same manner as described above.
[0016]
In this way, the assembled wall formwork group A1 and the wall formwork group A2 are arranged on the floor surface of a predetermined floor of a building that is a construction site, for example. In this case, both the beam-attached wall form group A1 and the wall form group A2 are lifted and carried by a wire of a crane (not shown). The beam-attached wall form group A1 and the wall form-group group A2 are separated from each other by a predetermined distance so that the veneer plates 6a to 6c and the veneer plate 15 face each other. Place them in parallel. Further, as shown in FIG. 5, the fastening bolts 21 are inserted into the respective bolt insertion holes 7 and 16. At this time, a cylindrical spacer 22 is interposed between the two veneer plates 6a and the veneer plate 15, and the fastening bolt 21 is inserted therethrough. Thereby, the space | interval of wall form group A1 with a beam and wall form group A2 is hold | maintained firmly, and after driving | running | working ready-mixed concrete and this solidified, the clamping bolt 21 does not contact concrete. It can be easily removed and dismantled easily.
[0017]
The fastening bolt 21 has a head portion 21a at one end and a screw portion 21b on the outer peripheral surface on the other end side. Then, a large-diameter washer 23 is fitted on the head 21a side of the tightening bolt 21, and as shown in FIG. 5, a bolt insertion hole 24 opened in the vertical outer frame 13a of the wall mold P2 and a bolt insertion of the veneer plate 15 are inserted. The holes 16, the spacers 22, the veneer plate 6 a of the wall formwork main body P <b> 1 with the beam, and the bolt insertion holes 7 and 24 respectively opened in the vertical outer frame 4 a are inserted in order. Further, the same washer 23 is fitted to the screw portion 21b side at the other end, and a nut 25 is screwed to the screw portion 21b from the outside. Each washer 23 has a diameter covering the adjacent vertical outer frames 4a and 4a or the vertical outer frames 13a and 13a of the adjacent wall mold P2 or the wall-mounted wall mold main body P1. The outer side surfaces of the vertical outer frames 4a and 4a or the vertical outer frames 13a and 13a are flush with each other, and the displacement of the tightening bolt 21 in the longitudinal direction is eliminated.
[0018]
As shown in FIG. 3, the shape-retaining member 9 is placed on the upper surface 8 of the beam bottom mold part 2 in each of the wall-mounted mold main bodies P1. In this case, the upper surface c of each shape retaining member 9 is a horizontal plane, and one side surface b is flush with the inner side surface 10 of the wall mold 1. And after building the wall formwork group A1 with a beam and the wall formwork group A2, the ready-mixed concrete is placed between them. After the placement, the ready-mixed concrete is cured for a predetermined period, and when the concrete is dried and hardened, the dismantling work is performed.
[0019]
Therefore, first, the nut 25 is removed, and each tightening bolt 21 is pulled out. Each clamping tool 17 is attached as it is. Then, the wall formwork main body P1 with a beam is pivoted outward as shown by the solid line in FIG. 6 with the outer lower end O1 of each wall formwork 1 as the center. At this time, the upper surface 8 of the beam bottom mold part 2 is connected to the edge 8b on the wall mold part 1 side from the edge 8a on the beam side mold part 3 side (the same as the inner upper end O2 of the wall mold part 1). In addition, the inner upper end O2 of the wall frame 1 is at the lowest position of the bottom surface h1 of the beam H. Therefore, even if the wall-mounted formwork main body P1 with the beam is rotated outward about the outer lower end O1 of the wall formwork 1, the inner upper end O2 of the wall formwork 1 is not supported, and the turn The operation can be performed and the frame can be removed.
[0020]
In addition, the shape retaining member 9 is placed on the upper surface 8 of the beam bottom mold part 2, and one side surface b is continuous with the inner side surface 10 of the wall mold part 1, and the upper surface c is the same. Since it intersects with one side surface b substantially at right angles and reaches the inner surface 11 of the beam-side mold part 3, the bottom surface h1 intersects the wall W at right angles and the side surface h2 The beam H is formed so as to intersect the bottom surface h1 at a right angle. Note that the upper surface c of the shape retaining member 9 does not necessarily need to reach the inner surface 11 of the beam-side mold part 3. In addition, since the concrete does not stick to the overlapping surface a of the shape retaining member 9 and the upper surface 8 of the beam bottom mold part 2, each beam formwork main body P <b> 1 can be easily separated, and the disassembly thereof is smooth. You can do it.
[0021]
Then, each shape retaining member 9 is peeled off from the bottom surface h1 of the beam H and removed. Similarly, the wall form group A2 is also rotated about the outer lower end to be peeled off. Thereby, the wall D with a beam is shape | molded. Although a slab bottom mold for forming a floor and a column mold for forming a column are also performed along with this work, illustration is omitted.
[0022]
Each of the dismantled wall formwork groups A1 and wall formwork groups A2 is suspended by a crane (not shown) and moved to the upper floor as it is to form the next wall with beams. Build the formwork. In this way, the formwork is constructed for each floor, the ready-mixed concrete is placed, and the wall D with the beam is sequentially formed. In this case, the wall formwork body P1 with a beam is formed into a single panel by continuously forming the wall formwork part, the beam bottom formwork part, and the beam side formwork part integrally. Forms can be constructed simply by connecting them horizontally, and work can be done very quickly.
[0023]
7 to 8 show a beam-attached wall form P3 according to another embodiment. Note that the same parts as those in the present embodiment are given the same reference numerals, and detailed description thereof is omitted. This beam-attached wall formwork P3 includes a beam-attached wall formwork main body P4 and a shape-retaining member 9 described later. The wall formwork main body P4 with a beam has a wall formwork part 31 for forming the wall W, a beam bottom formwork part 32 for forming the beam H, and a beam side formwork part 33 continuously integrated. Molded into a single panel. A plurality of vertical bars 35a and 35b parallel to the vertical outer frame 34a or the horizontal outer frame 34b are provided in the vertical rectangular metal outer frame 34 whose upper part is bent and spaced apart from each other by a predetermined distance. ing. The vertical outer frame 34a has a U-shaped cross section, and each vertical bar 35a has an L-shaped cross section. Further, one side surface of the outer frame 34 is stretched so as to correspond to the wall mold frame portion 31, the beam bottom mold frame portion 32, and the beam side mold frame portion 33 so that the plywood plates 36 a, 36 b, and 36 c are connected to each other. . However, the upper surface of the beam bottom mold part 32, that is, the upper surface 38 of the plywood plate 36 b intersects the inner side surface 40 of the wall mold part 31 almost at right angles.
[0024]
A pair of split members 9 a and 9 a having the same shape as the shape retaining member 9 are placed on the upper surface 38 of the beam bottom mold part 32. These divided members 9a, 9a are also made of, for example, wooden, hard synthetic resin, or metal, and are formed into a long plate shape having substantially the same length as the lateral width of the beam-attached wall form body P4. Each of the cross sections is a right triangle, and the overlapping surface d, which is the longest inclined surface among the three sides, is opposed to each other, and in the state of being vertically stacked, the cross sectional shape is a horizontally long rectangle. It is supposed to be. In addition, at this time, one side e of the upper dividing member 9a is continuous with the inner side surface 40 of the wall mold 31 and is flush with the upper surface f so as to intersect the one side e substantially at right angles. It reaches the inner side surface 41 of the plywood plate 36c, which is the inner side surface of the portion 33, and is kept substantially horizontal. In addition, the overlapping surface d of the two divided members 9a, 9a gradually decreases linearly from the end edge 38a on the beam-side frame portion 33 side to the end edge 38b on the wall-type frame portion 31 side.
[0025]
The beam-formed wall formwork P3 formed in this way is also used together with the wall formwork P2, and as in this embodiment, as shown in FIG. Assembled as. The connecting structure and connecting method of the beam-attached wall form group A3 and the wall form group A2 are the same as those in the present embodiment, and a detailed description thereof will be omitted. Similarly to the present embodiment, the wall formwork group A3 and the wall formwork group A2 are arranged on the floor surface of a predetermined floor of a building which is a construction site, for example. A pair of divided members 9a and 9a are placed on the upper surface 38 of the beam bottom mold part 32 in the wall mold body P4. In this case, the upper surface f of the upper divided member 9a is a horizontal plane. And after building the wall form group A3 with a beam and the wall form group A2, the ready-mixed concrete is placed between them and cured for a predetermined period. In this way, when the concrete dries and hardens, the dismantling operation is performed in the same manner as in the present embodiment.
[0026]
Also in this case, the wall-formed frame form main body P4 with the beam is rotated outward and peeled off as shown by the solid line in FIG. At this time, the overlapping surfaces d of the upper and lower divided members 9a and 9a are inclined downward toward the wall mold 31 and the lower ends of the lower divided members 9a, that is, the inner upper ends O2 of the wall mold 31 are overlapped. Since the upper and lower divided members 9a, 9a are separated at the overlapping surface d because they are at the lowest position of the surface d, the unframement can be easily performed without any obstacles. Then, the remaining upper divided members 9a are peeled off and removed. Similarly, the wall form group A2 is also rotated about the outer lower end to be peeled off. Thereby, the wall W with a beam is shape | molded.
[0027]
When the beams H are provided on both sides of the upper portion of the wall W, the beam-attached wall form group A1 according to the present embodiment or the beam-attached wall form group A3 according to the other embodiments are respectively connected to the veneer plate 6a. ˜6c or veneer plates 36a to 36c may be arranged and constructed so as to face each other. In this case as well, the present invention can be applied.
[0028]
【The invention's effect】
As described above, the wall form with a beam according to the present invention is formed by continuously and integrally forming the wall form part, the beam bottom form part, and the beam side form part, and the beam bottom form part. The upper surface is gradually lowered from the edge on the beam side formwork part side to the edge on the wall formwork part side, and the shape retaining member is placed on the upper surface of the beam bottom formwork part. Therefore, even if the wall form with a beam is made into a single panel shape, the inner upper end of the wall form part is not supported on the bottom of the beam when the wall form with the beam is disassembled, and it can be easily removed. Become. This makes it possible to use a wall formwork with a beam in which a wall formwork section, a beam bottom formwork section, and a beam-side formwork section are continuously and integrally molded, and can also be carried side by side to the upper floor at the same time. As a result, the construction and dismantling work of the formwork is simplified, and the work efficiency is remarkably improved, so that the construction period can be shortened and the construction cost can be reduced.
[0029]
In addition, since the concrete does not stick to the contact surface between the shape-retaining member and the beam bottom mold part, the wall mold with the beam can be easily separated, and the disassembly can be performed smoothly.
[0030]
The inner surface of the beam bottom mold part intersects with the inner surface of the wall mold part at a substantially right angle, and the shape retaining member is formed by a pair of divided members arranged vertically to form the shape retaining member. The member has one side surface that is continuous with the inner side surface of the wall mold part and is flush with the upper surface and intersects the one side surface substantially at right angles to reach the inner side surface of the beam side mold part. An effect equivalent to that of the present invention can be obtained even when the overlapping surface is gradually lowered from the edge on the beam mold side to the edge on the wall mold side.
[Brief description of the drawings]
FIG. 1 is a perspective view of a beam-formed wall form according to the present invention.
FIG. 2 is a perspective view of a wall formwork.
FIG. 3 is an assembled perspective view of a wall formwork group with beams and a wall formwork group.
FIG. 4 is a cross-sectional plan view of the same fastener part.
FIG. 5 is a plan sectional view of the tightening bolt part.
FIG. 6 is a side cross-sectional view of a main part showing a state where the frame is removed.
FIG. 7 is a perspective view of a wall form with a beam according to another embodiment.
FIG. 8 is a side cross-sectional view of a main part showing a state where the frame is removed.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Wall formwork part 2 Beam bottom formwork part 3 Beam side formwork part 8 Upper surface 8a End edge 8b End edge 9 Shape-retaining member 9a Dividing member 10 Inner side surface 11 Inner side surface P Form for wall with beam P1 For wall with beam Formwork body P3 Formwork for wall with beam P4 Formwork body for wall with beam D Wall with beam H Beam W Wall b One side c Upper surface d Overlapping surface

Claims (1)

A wall mold part for forming a wall and a beam bottom mold part and a beam side mold part for forming a beam are continuously and integrally formed, and the upper surface of the beam bottom mold part is the wall mold. A wall formwork body with a beam that is formed on a flat surface that intersects the inner surface of the frame portion at a substantially right angle, and a pair of divisions that are placed so as to coincide with the upper surface of the beam bottom formwork portion and are stacked vertically It is composed of a member, and one side surface is flush with the inner side surface of the wall mold part, and the upper surface intersects the one side surface almost at right angles to reach the inner side surface of the beam side mold part, A beam-attached wall mold comprising: a shape-retaining member in which an overlapping surface of both divided members gradually decreases from an edge on the beam-side mold part side to an edge on the wall-type frame part side frame.

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