JP2004308285A - Form for wall with beam - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a form for a wall with a beam in which a side form portion, a beam bottom form portion, and a beam side wall portion are serially integrally formed into a single panel, to allow easy separation thereof from the wall and reduction in parts count, to contribute to simple and easy construction/dismantling of a building, to improve working efficiency, to shorten construction period, and to reduce construction costs. <P>SOLUTION: In the form for the wall with the beam of the wall form portion 1 for molding the wall W, and the beam bottom form portion 2 and the beam side wall portion 3 for molding the beam H are serially integrally formed. The form consists of a form main body P1 for the wall with the beam, and a shape retaining member 9. The form main body P1 for the wall with a beam is formed by gradually lowering an upper surface 8 of the beam bottom form portion 2 from an edge 8a of the side the beam side form portion 3 to an edge 8b of the side to the wall form portion 1. The shape retaining member 9 is mounted on the upper surface 8 of the beam bottom form portion 2 so as to conform to the same such that its one side surface b is serially arranged along an inner side surface 10 of the wall form portion 1 and flush with the same, and that its upper surface c is arranged so as to cross the one side surface b almost at right angles to the same. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

[0001]
TECHNICAL FIELD OF THE INVENTION
TECHNICAL FIELD The present invention relates to a formwork for a beam-equipped wall that is used when a concrete beam is used to construct a beam-equipped wall provided integrally with a beam along an upper end portion of the wall.
[0002]
[Prior art]
Conventionally, for example, in the case of a multi-layer concrete structure, when constructing a wall of each floor, particularly a wall in which a beam is integrally provided along the upper end thereof, first, a reinforcing bar is arranged on the wall, and then the reinforcing bar is positioned inside the building. In addition to the wall form and the column form, the beam form, the beam form and the beam form that are located outside the building are constructed. I am trying to do it. Further, when disassembling these, each side form such as a pillar, a beam, a wall, and the like is dismantled sequentially (for example, see Patent Document 1).
[0003]
[Patent Document 1]
JP-A-2002-250130 (page 3-4, FIG. 1)
[0004]
[Problems to be solved by the invention]
As described in Patent Document 1, many forms such as a wall form, a beam bottom form and a beam side form are divided on both sides of a wall with a beam so as to correspond to respective portions. Is connected and installed. Because beams typically have their bottoms intersected approximately at right angles to the wall surface and their sides intersect approximately at right angles to the same bottom surface, they follow along those surfaces from the wall surface to the side surfaces of the beam. This is because if the bent formwork is integrally formed, it is very difficult to peel it off during disassembly.
[0005]
More specifically, when the bent form is to be peeled, the form is to be peeled from the upper side of the beam, but usually, the form has a certain thickness, and the lower end of the form corresponding to the wall, that is, It turns around the outer lower end of the form. However, since the distance from the center of rotation to the inner upper end of the formwork corresponding to the wall is longer than the distance from the center of rotation to the bottom surface of the beam, the inner upper end of the formwork during the rotation of the formwork. Is supported on the bottom of the beam, and the formwork is not peeled off any more or is difficult to peel off. Under such circumstances, many formwork such as wall formwork, beam bottom formwork, beam side formwork, etc., must be connected and attached on both sides of the wall with beam, corresponding to each part, The construction and disassembly work is troublesome, takes a lot of time and labor, is extremely inefficient, and has a problem that not only many workers are required but also the construction period is prolonged and the construction cost is increased. In addition, since there are too many and many types of molds, there is also a problem that management and movement thereof are very complicated.
[0006]
In view of the above, the present invention has been made in view of the above-described problem, and the bent formwork is continuously formed integrally, so that the formwork can be removed even as a single panel. An object of the present invention is to provide a formwork for a wall with a beam that simplifies dismantling work, improves work efficiency, shortens the construction period, and reduces 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 is characterized in that a wall form part for forming a wall, a beam bottom form part for forming a beam, and a beam side form part are continuous. And a beam form body with a beam, wherein the upper surface of the beam bottom form part gradually lowers from the edge on the beam side form part side to the edge on the wall form part side. A shape-retaining member that is placed on the upper surface of the beam-bottomed formwork, one side surface of which is flush with the inner surface of the wall formwork portion, and whose upper surface intersects the one side surface at a substantially right angle. .
[0008]
Therefore, when the formwork for the wall with beams is constructed and concrete is cast, and then the body of the formwork for the walls with beams is peeled off, the upper surface of the beam-bottom formwork is formed from the edge on the beam-side formwork side. The lower end of the wall form part is located at the lowest position of the bottom of the beam, so that the lower end of the wall form part is centered on the outer lower end of the wall form part. It can be pivoted outward without any support of the attached wall formwork body, peeled off and removed. Further, in a state where the shape-retaining member is placed on the upper surface of the beam bottom form portion, one side surface is connected to the inner side surface of the wall form portion to be flush, and the upper surface intersects the one side surface at a substantially right angle. Therefore, a beam whose bottom surface crosses the wall at right angles is formed at the upper end of the wall.
[0009]
As a result, the construction and demolition work after concrete placement is significantly improved, and furthermore, since the wall formwork body with beams can be moved as it is, the construction work of a multi-story building can be performed quickly. In addition, since the concrete does not stick to the contact surface between the shape retaining member and the beam bottom form part, the beam form body with a beam can be easily separated, and the disassembly can be performed smoothly. In addition, it is preferable that the lower end of the wall form part in the beam form body with a beam substantially reaches the floor surface, whereby the wall form body with a beam becomes one panel. It can be molded, its construction and disassembly work can be simplified, and work efficiency is improved. However, if there is only one sheet, a wall form having different vertical dimensions may be added below and connected to the wall form.
[0010]
As another configuration of the beam formwork with a beam according to the present invention, a wall formwork section for forming a wall, a beam bottom formwork section for forming a beam, and a beam side formwork section are continuously formed. A beam form body with a beam, which is integrally formed, and a top surface of the beam bottom form portion is formed into a flat surface substantially perpendicular to an inner surface of the wall form portion; and an upper surface of the beam bottom form portion It is composed of a pair of divided members that are placed so as to match with each other, and are vertically overlapped, and one side surface is continuous with the inner side surface of the wall form portion, and the upper surface is substantially perpendicular to the one side surface. Intersect and reach the inner side surface of the beam-side formwork, and the overlapping surface of the two divided members gradually decreases from the edge on the beam-side formwork side to the edge on the wall-formwork side. And a shape retaining member.
[0011]
BEST MODE FOR CARRYING OUT THE INVENTION
Hereinafter, an embodiment of a formwork for a wall with a beam according to the present invention will be described with reference to the drawings. In the present embodiment, a case will be described in which a wall with a beam is provided on only one side along the upper end of the wall, but the beam is provided on both sides of the upper end of the wall. Needless to say, it can be constructed even on the attached wall. FIG. 1 is a perspective view of a wall formwork with beams according to the present invention, and FIG. 2 is a perspective view of the wall formwork. As shown in FIG. 1, the beam-forming wall form P is composed of a beam-forming wall form body P <b> 1 and a shape retaining member 9 described later.
[0012]
The beam form body P1 with a beam includes a wall form part 1 for forming a wall W described later, a beam bottom form part 2 and a beam side form part 3 for forming a beam H described later. It is continuously and integrally molded to form a single panel. For example, the beam form body P1 with a beam has dimensions of 1000 mm in width, 2700 mm in length, and 100 mm in thickness, and a predetermined rectangular rectangular outer metal frame 4 having a bent upper portion. A plurality of vertical rails 5a and horizontal rails 5b are arranged parallel to the vertical outer frame 4a or the horizontal outer frame 4b while being separated from each other. The vertical outer frame 4a is formed so that its cross section has a U-shape, and each of the vertical bars 5a is formed into an L-shaped cross section. Then, the veneer plates 6a, 6b, and 6c are stretched on one side surface of the outer frame 4 so as to correspond to the wall form section 1, the beam bottom form section 2, and the beam side form section 3, respectively. Each plywood plate 6a, 6b, 6c is fixed by screwing a screw 12 through a through hole (not shown) provided in each vertical rail 5a, 5a. The veneer plate 6a corresponding to the wall form 1 is provided with bolt insertion holes 7 at the upper and lower portions on both sides for inserting fastening bolts 21 to be described later.
[0013]
The upper surface of the beam bottom form part 2, that is, the upper surface 8 of the plywood plate 6b, has the edge on the beam side form part 3 side when the beam form body P1 with beams is erected substantially perpendicularly to the floor surface. It is formed so as to be linear and gradually lower from 8a to the edge 8b on the wall form 1 side. In other words, the upper surface 8 of the beam bottom form part 2 is inclined downward toward the wall form part 1. The inclination angle is usually in the range of 5 degrees to 45 degrees with respect to the horizontal plane, and is selected within a range in which the beam-molded wall form body P1 can be removed from the frame after placing the ready-mixed concrete. Then, on this upper surface 8, a shape-retaining member 9 for easily performing dismantling work is placed. The shape-retaining member 9 is made of, for example, wood or hard synthetic resin or metal, and is formed into a long plate shape having a length substantially equal to the width of the beam-form wall main body P1. The cross section is a right-angled triangle, and the overlapping surface a, which is the longest inclined surface among the three sides, is placed in conformity with the upper surface 8 of the beam bottom form part 2. The one side surface b is flush with the inner surface of the wall form part 1, that is, the inner surface 10 of the plywood plate 6a, and the upper surface c intersects the inner surface 10 substantially at a right angle. The inner surface of the frame portion 2, that is, the inner surface 11 of the plywood 6c is reached. Thereby, the upper surface c of the shape retaining member 9 is set substantially horizontal.
[0014]
The wall form P2 has substantially the same size and height as the beam form main body P1, and, like the beam form main body P1, has a vertically rectangular metal outer frame. A plurality of vertical bars 14a and horizontal bars 14b are provided inside the interior of the frame 13 and are separated from each other by a predetermined distance and are parallel to the vertical outer frame 13a or the horizontal outer frame 13b. One plywood plate 15 is stretched on one side surface of the outer frame 13. Each of the vertical outer frames 13a is also formed so that its cross section has a U-shape, and each of the vertical bars 14a is also formed into an L-shaped cross section. The plywood plate 15 is fixed by screwing the screw 12 through a through hole (not shown) provided in each vertical bar 14a. Further, a bolt insertion hole 16 for inserting the tightening bolt 21 is formed in the veneer plate 15 at a position corresponding to each bolt insertion hole 7 of the beam form body P1 with a beam.
[0015]
The wall form P with beams and the wall form P2 have the above-described configuration. Next, a method of building and disassembling will be described. First, as shown in FIG. 3, each of the beam form body P1 for a wall with a beam and the wall form P2 is assembled as a set of, for example, five pieces. That is, each of the beam form bodies P1 with a beam and the wall form P2 are continuously arranged in the same direction in the horizontal direction, and in each of the wall form bodies P1 with a beam, the adjacent vertical outer frames are provided. 4a, 4a are firmly clamped by clamps 17 arranged at the upper and lower portions thereof. As shown in FIG. 4, the clamp 17 includes a flat 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 has an auxiliary rod 17b. The gap between the other end of the main rod 17a and the other end of the sub-rod 17b can be freely adjusted by screwing the nut 20 from the outside while inserting the annular tubular portion 19 provided at one end. ing. Then, the two vertical outer frames 4a, 4a are fastened and fixed integrally by sandwiching the two vertical outer frames 4a, 4a from outside thereof with the tip of the main rod 17a and the tip of the sub-rod 17b. Both vertical outer frames 13a, 13a of each of the wall forms P2 are clamped in the same manner as described above.
[0016]
The required number of the beam formwork group A1 and the wall formwork group A2 assembled in this manner are arranged, for example, on the floor of a predetermined floor of a building at the construction site. In this case, the beam form wall group A1 and the wall form group A2 are both lifted and carried by the wire of a crane (not shown). Then, the beam-forming wall formwork group A1 and the wall-forming formwork 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 at a position where the wall with beam is to be constructed. Place them in parallel. Further, as shown in FIG. 5, a tightening bolt 21 is inserted into each of the bolt insertion holes 7 and 16. At this time, the fastening bolt 21 is inserted between the two plywood plates 6a and the plywood plate 15 with a cylindrical spacer 22 interposed therebetween. As a result, the interval between the beam formwork group A1 and the wall formwork group A2 is firmly maintained, and the fastening bolt 21 does not come into contact with the concrete even after the fresh concrete has been driven in and hardened. It can be easily disassembled and easily dismantled.
[0017]
The tightening bolt 21 has a head 21a at one end and a screw portion 21b on the outer peripheral surface at the other end. Then, a large-diameter washer 23 is fitted to the head 21a side of the tightening bolt 21, and as shown in FIG. 5, the bolt insertion hole 24 formed in the vertical outer frame 13a of the wall form P2 and the bolt insertion of the plywood 15 are formed. The holes 16, the spacers 22, the veneer plate 6 a of the beam form wall body P 1 with beams, and the bolt insertion holes 7 and 24 formed in the vertical outer frame 4 a are sequentially inserted. Also, the same washer 23 as described above is fitted to the screw portion 21b side at the other end, and a nut 25 is further screwed to the screw portion 21b from outside. Each said washer 23 has a diameter which covers up to the adjacent vertical outer frame 4a, 4a or the vertical outer frame 13a, 13a of the adjacent wall form P2 or the beam form main body P1 with beams, and thereby, is adjacent. The outer surfaces of the vertical outer frames 4a, 4a or the vertical outer frames 13a, 13a are flush with each other, so that there is no displacement of the tightening bolt 21 in the longitudinal direction.
[0018]
As shown in FIG. 3, a shape retaining member 9 is placed on the upper surface 8 of the beam bottom form part 2 of each of the beam form bodies P1 with beams so as to match. In this case, the upper surface c of each shape retaining member 9 is a horizontal plane, and one side surface b is the same plane as the inner side surface 10 of the wall form 1. Then, after the beam form wall group A1 and the wall form group A2 are constructed, ready-mixed concrete is poured in the meantime. After the casting, the ready-mixed concrete is cured for a predetermined period, and when the concrete dries and hardens, the concrete is dismantled.
[0019]
Therefore, first, the nut 25 is removed, and each tightening bolt 21 is removed. Each clip 17 is attached as it is. Then, each of the wall-forming frame main bodies P1 is pivoted outward around the outer lower end O1 of each of the wall forming parts 1 as shown in FIG. At this time, the upper surface 8 of the beam bottom form part 2 extends from the edge 8a on the beam side form part 3 side to the edge 8b on the side of the wall form part 1 (the same as the inner upper end O2 of the wall form part 1). , And the inner upper end O2 of the wall form 1 is at the lowest position of the bottom surface h1 of the beam H. Therefore, even if the main body P1 for walls with beams is pivoted outward about the outer lower end O1 of the wall form part 1, the inner upper end O2 of the wall form part 1 is not supported, and the pivoting thereof is performed. The operation can be performed, and the frame can be removed.
[0020]
When the shape retaining member 9 is placed on the upper surface 8 of the beam bottom form part 2, one side surface b is continuous with the inner side surface 10 of the wall form part 1, and the upper surface c is the same. Since it crosses at a right angle to one side surface b and reaches the inner side surface 11 of the beam-side formwork 3, the bottom surface h1 intersects the wall W at a right angle at the upper end of the wall W, and the side surface h2 is The beam H is formed so as to intersect the bottom surface h1 at right angles. Note that the upper surface c of the shape retaining member 9 does not necessarily have to reach the inner side surface 11 of the beam-side formwork 3. Moreover, 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 form part 2, each beam form body P1 with beams can be easily separated, and the disassembly can be performed smoothly. I 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 turned around the outer lower end and peeled off. Thereby, the wall D with a beam is formed. The slab bottom formwork for forming the floor and the column formwork for forming the columns are also performed together with this operation, but are not shown.
[0022]
Each of the dismantled wall formwork group A1 and wall formwork group A2 is suspended by wires of a crane (not shown) and moved to the upper floor as it is to form the next wall with beams. Build a formwork. In this way, the formwork is constructed for each floor, and the fresh concrete is cast, and the wall D with the beam is sequentially formed. In this case, since the beam form body P1 for a wall with a beam is formed integrally with the wall form section, the beam bottom form section, and the beam side form section continuously and in a single panel shape. The formwork can be constructed only by connecting these laterally, and the operation can be performed extremely quickly.
[0023]
7 and 8 show a form P3 for a wall with beams according to another embodiment. The same parts as those in the present embodiment are denoted by the same reference numerals, and detailed description is omitted. The beam-formed wall formwork P3 includes a beam-formed wall formwork body P4 and a shape retaining member 9 described later. In the beam form body P4 with a beam, a wall form part 31 for forming the wall W, a beam bottom form part 32 and a beam side form part 33 for forming the beam H are continuously and integrally formed. It is formed into a single panel. A plurality of vertical rails 35a and horizontal rails 35b parallel to the vertical outer frame 34a or the horizontal outer frame 34b are provided in the vertical rectangular metal outer frame 34 having a bent upper portion, respectively. ing. The vertical outer frame 34a has a U-shaped cross section, and each of the vertical bars 35a has an L-shaped cross section. Further, the veneer plates 36a, 36b, and 36c are stretched on one side surface of the outer frame 34 so as to correspond to the wall form sections 31, the beam bottom form sections 32, and the beam side form sections 33, respectively. . However, the upper surface of the beam bottom form part 32, that is, the upper surface 38 of the plywood plate 36 b intersects the inner side surface 40 of the wall form part 31 substantially at right angles.
[0024]
On the upper surface 38 of the beam bottom form part 32, a pair of divided members 9a, 9a having the same shape as the shape retaining member 9 are placed. These split members 9a, 9a are also made of, for example, wooden or hard synthetic resin or metal, and are formed into a long plate shape having substantially the same length as the width of the beam form body P4 with a beam. Each of the cross-sections forms a right-angled triangle, and the overlapping surfaces d, which are the longest slopes, of the three sides are opposed to each other. It is becoming. Moreover, at this time, one side surface e of the upper divided member 9a is continuous with the inner side surface 40 of the wall form part 31 and is flush with the one side surface e. It reaches the inner surface 41 of the plywood 36c, which is the inner surface of the part 33, and is kept substantially horizontal. Further, the overlapping surface d of the two divided members 9a, 9a linearly and gradually decreases from the edge 38a on the beam-side frame portion 33 side to the edge 38b on the wall-side frame portion 31 side.
[0025]
The beam-formed wall form P3 formed in this way is also used together with the wall form P2, and, like the present embodiment, as shown in FIG. Assembled as The connection structure and connection method between the beam form wall group A3 and the wall form group A2 are the same as in the present embodiment, and detailed description is omitted. As in the present embodiment, the required number of the beam formwork group A3 and the wall formwork group A2 are arranged, for example, on the floor of a predetermined floor of a building which is a construction site, and The pair of divided members 9a, 9a are placed on the upper surface 38 of the beam bottom form part 32 in the wall form body P4. In this case, the upper surface f of the upper division member 9a becomes a horizontal plane. Then, after the beam formwork group A3 and the wall formwork group A2 are constructed, ready-mixed concrete is poured in the meantime 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 beam form body P4 with a beam is pivoted outward around the outer lower end O1 of the wall form portion 31 as shown in FIG. At this time, the overlapping surfaces d of the upper and lower divided members 9a, 9a are inclined downward to the wall form 31 side, and the lower end of the lower divided member 9a, that is, the inner upper end O2 of the wall form 31 is overlapped. Since the upper and lower divided members 9a, 9a are separated from each other at the overlapped surface d because they are at the lowest position of the surface d, the removal of the frame can be easily performed without any obstacle. Then, the remaining upper divided members 9a are peeled off and removed. Similarly, the wall form group A2 is also turned around the outer lower end and peeled off. Thereby, the wall W with a beam is formed.
[0027]
When the beams H are provided on both sides of the upper portion of the wall W, the beam-forming wall form group A1 according to the present embodiment or the beam-forming wall form group A3 according to the other embodiment is respectively attached to the plywood 6a. 6c or veneer plates 36a to 36c may be arranged and constructed so as to face each other. In this case, the present invention can be applied.
[0028]
【The invention's effect】
As described above, the beam form for a wall 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 with the beam form part. The upper surface was gradually lowered from the edge on the side of the beam-side mold section to the edge on the side of the wall form section, and a shape-retaining member was placed on the upper surface of the beam-bottom section. Therefore, even if the wall formwork with beams is made into a single panel, the inside upper end of the wall formwork does not support the bottom of the beam when dismantling the wall formwork with beams, and it can be easily removed. Become. As a result, it is possible to use a beam-formed wall form in which the wall form, the beam bottom form and the beam-side form are continuously and integrally formed, and can also be arranged side by side and simultaneously carried to an upper floor. As a result, the construction and dismantling work of the formwork is simplified, and the work efficiency is remarkably improved. This has a beneficial effect that the construction period can be shortened and the construction cost can be reduced.
[0029]
Moreover, since concrete does not stick to the contact surface between the shape retaining member and the beam bottom formwork, the wall formwork with beams can be easily separated, and the disassembly can be performed smoothly.
[0030]
The inner surface of the beam-bottom form part intersects the inner surface of the wall form part at a right angle, and the shape-retaining member is formed by a pair of divided members arranged in a vertically overlapping manner. The member has one side surface which is continuous with the inner side surface of the wall form part and is flush, and the upper surface reaches the inner side surface of the beam side form part substantially perpendicularly to the one side surface, and The same effect as that of the present invention can be obtained even when the overlapping surface is gradually reduced from the edge on the beam-side frame portion side to the edge on the wall-form frame portion side.
[Brief description of the drawings]
FIG. 1 is a perspective view of a formwork for a wall with a beam according to the present invention.
FIG. 2 is a perspective view of a wall formwork.
FIG. 3 is an assembled perspective view of a group of wall formwork with beams and a group of wall formwork.
FIG. 4 is a plan cross-sectional view of the clipping tool part.
FIG. 5 is a plan sectional view of the fastening bolt portion.
FIG. 6 is a side sectional view of a main part showing a state in which the frame is removed.
FIG. 7 is a perspective view of a wall formwork with beams according to another embodiment.
FIG. 8 is a side sectional view of a main part showing the state where the frame is removed.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Wall form part 2 Beam bottom form part 3 Beam side form part 8 Top surface 8a Edge 8b Edge 9 Shape retaining member 9a Dividing member 10 Inner side surface 11 Inner side surface P Beam form P1 for beams Formwork body P3 Formwork for beam with beam P4 Formwork body for beam with beam D Wall with beam H Beam W Wall b One side c Top surface d Stacking surface

Claims (2)

A wall form part for forming a wall, a beam bottom form part and a beam side form part for forming a beam are continuously and integrally formed, and an upper surface of the beam bottom form part is formed on the beam side. A beam form body with a beam gradually lowering from an end edge on the form section side to an end edge on the wall form section side, and placed on the upper surface of the beam bottom form section; A formwork member for a beam with a beam, comprising: a shape-retaining member that is continuous with the inner side surface of the formwork portion and that is flush with the upper surface and intersects the one side surface at substantially right angles. A wall form part for forming a wall, a beam bottom form part and a beam side form part for forming a beam are continuously and integrally formed, and an upper surface of the beam bottom form part is formed of the wall form. A wall-shaped formwork body with a beam formed into a flat surface substantially perpendicular to the inner surface of the frame portion, and a pair of splits which are placed so as to match the upper surface of the beam-bottomed formwork portion and vertically stacked One side surface is continuous with the inner side surface of the wall form part and becomes flush, and the upper surface reaches the inner side surface of the beam side form part substantially perpendicularly to the one side surface, and A shape-retaining member in which the overlapping surface of the two divided members gradually decreases from the edge on the beam-form side to the edge on the wall-form side; frame.

Images