JPH0610363A - Half pca board construction method for underground outer periphery wall and half pca board thereof - Google Patents

Abstract

PURPOSE:To make it possible to eliminate any need for a form and simplify supporting, inhibit the weight of materials to be hoisted to a minimum, and what is more, to minimize the use of timber and the generation of industrial waste and simplify the construction of drain ditch for leakage treatment and build in a half Pca board easily and definitely. CONSTITUTION:One end of an underground peripheral wall separator is welded to a steel pile 2 for earth retaining 1 after excavation. Inner wall half Pca boards 51 are laid out separated from the earth retaining spot at a specified span. These inner wall half Pca boards are fixed with the other end of each separator properly. Reinforcements 511 are placed between the earth retained spots and each inner wall half Pca board where concrete 53 is placed. What is more, mortar is filled in an outer edge portion on foundation beams 3 which build in the inner wall half Pca boards, thereby forming a drain ditch 9 which serves as an inner wall half Pca board beam. In addition, there is formed a small window into which a fork of a forklift is inserted at a proper location on a half Pca board main body.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for constructing a half Pca plate (semi-finished product precast concrete plate) for an outer peripheral wall of a basement without using a concrete formwork and the half Pca plate.

[0002]

2. Description of the Related Art Conventionally, a formwork has been used exclusively for the in-situ construction of underground peripheral walls in various concrete buildings. In this case, for example, as shown in FIGS.
An appropriate number of H-shaped steel piles 11 are driven into the ground at predetermined intervals to form the mountain stopper 1, and then root cutting is performed to construct a foundation slab and foundation beam (not shown), The basement floor slab 4 is constructed on the foundation beam, and then the formwork A made of plywood or the like is arranged on the basement floor slab 4 at a predetermined distance from the mountain stopper 1, and the formwork A is described above. It is supported by a large number of engagement type separators 76, which are so-called chippers, which are engaged with the flanges of the steel piles 1, and a box metal member 77 provided in these separators is used as a scrap material (square pipe) 8 of the form A. Then, the form A is supported by being appropriately reinforced by a support (not shown). In the figure, B is a girder form.

[0003]

However, this form A
Is a one-sided mold, so it is necessary to make the support work more rigid than general molds, and the vertical and horizontal separator spacing and square pipe spacing must be narrowed. Therefore, there are the following problems. It requires a large amount of formwork / supporting materials such as plywood, piers, square pipes, separators, box hardware, and supports. When diverting formwork and supporting work, many materials must be lifted in a short period of time, which requires a great deal of labor. Also,
If the time is delayed, the work will not be easy because it will be lifted from the lifting opening, and the later it will be, the more the frame work of the upper floor will proceed, so it will be difficult to carry out the materials, and the formwork / support The conversion rate of is reduced. Since it is necessary to provide a drain for drainage treatment just below the inner wall surface of the constructed underground outer wall, it is necessary to separately place a rising concrete for drainage formation on the basement slab 4, and a formwork C for that purpose. , Reinforcement and concrete placing work are required. In addition, it is necessary to perform waterproof treatment on the inside of the drainage groove thus formed, which is extremely troublesome. The formwork made of plywood becomes a large amount of industrial waste, and the worse the conversion rate, the higher the tendency. Therefore, there is a great problem in the subsequent disposal. In addition, the large amount of timber required causes a problem of environmental destruction on a global scale due to unregulated large-scale deforestation of forests. In view of this point, the inventions of claims 1 to 4 eliminate the formwork, simplify the support work, minimize the lifting of materials, and use wood and generate industrial waste. In addition, the invention of claim 3 simplifies the construction of the drainage groove for water leakage treatment, thereby solving the conventional problems. Further, the invention of claim 4 is to make it possible to easily and surely build a half Pca plate without using a formwork by using a forklift.

[0004]

In order to achieve the above object, the method of constructing a half Pca plate for an outer peripheral wall according to claim 1 is to weld one end of a separator for an underground outer wall to a steel pile of a mountain stopper after root cutting, Further, inner wall half Pca plates are arranged at a predetermined interval from the mountain stopper, and these inner wall half Pca plates are appropriately fixed at the other ends of the respective separators, and between the mountain stopper and each inner wall half Pca. Characterized by placing concrete and placing concrete. The half Pca plate construction method for the underground outer peripheral wall according to claim 2 is the construction method according to claim 1,
The lateral width of each inner wall Pca plate is adapted to the pile spacing of the pile retaining steel piles and arranged at corresponding positions between the piles, and each separator is passed through the joint of the inner wall half Pca plate to support each inner wall half Pca plate. Is characterized by. The half Pca plate construction method for the underground outer peripheral wall of claim 3 is the construction method according to claim 1 or 2, wherein the peripheral edge of the basement floor slab constructed on the foundation beam is brought closer to the interior side of the building. In the outer edge portion of the foundation beam of the above, a recess which is lower than the basement slab and slightly larger than the basement outer peripheral wall is formed, and each inner wall half Pca is formed in the recess.
It is characterized in that a plate is built, and mortar is filled in the remaining part of the recess on the indoor side to form a drainage groove which also serves as a burr for the inner wall half Pca plate. Further, the half Pca plate of the underground outer peripheral wall according to claim 4 is characterized in that a small window hole for inserting a fork of a forklift is formed at an appropriate position of a half Pca plate body whose front surface is completed and whose rear surface is not completed. .

[0005]

With the above-mentioned structure, the first to third aspects are provided.
In the invention, the inner wall half Pca plate is driven into the underground outer peripheral wall to form a part of the underground outer peripheral wall, and the formwork is made useless. Further, the inner wall half Pca plate has much higher rigidity and mechanical strength than plywood and the like, and since it is supported by the separator welded to the mountain stopper steel pile, its support is strong and the supporting work is reduced. Further, in the invention of claim 3, the periphery of the basement slab plays the role of rising concrete, making the rising concrete unnecessary, and the mortar filled in the rest of the recess serves as a burr for the inner wall Pca plate, thus reducing the supporting work. At the same time, the drainage ditch made of the mortar itself serves as a waterproofing means and eliminates other waterproofing treatment. Further, according to the invention of claim 4, by inserting the fork of the forklift into the small window hole, it is possible to easily move and build in the standing posture by the forklift. Therefore, the intended purpose can be achieved.

[0006]

1 to 6 show a first embodiment according to the invention of claims 1 to 3. The procedure will be sequentially described below. 1. In the periphery of the building to be built, a large number of steel piles 11 of H-shaped steel are driven into the ground at a predetermined pile interval to form the required mountain stopper 1 (Figs. 1 and 2). Although not shown in the figure, between the steel piles, appropriate means for preventing sediment collapse, such as a weirboard and a waving, should be taken according to the situation at the site. On the other hand, a required number of inner wall half Pca plates 51 having a width suitable for the pile spacing of the steel piles 11 and a height suitable for the height of the basement floor are produced at a site or a factory. These inner wall half Pca plates are formed into a thin wall with the front surface in a completed state and the back surface in an unfinished state, and are provided with necessary rebars 511 inside to increase the adhesiveness to the post-cast concrete on the back surface side and increase the bonding strength. Wave bar 512 in the bar arrangement for
Etc. are joined and projected to the back surface (FIGS. 1 to 6). 2. After root cutting in the mountain stop 1, a foundation slab 2, a foundation beam 3, and a basement slab 4 are constructed. At this time, the peripheral edge of the basement slab 4 is brought closer to the indoor side, and the upper outer edge portion of the foundation beam 3 in the outer peripheral part of the building is formed in a recess 41 which is lower than the basement slab and slightly larger than the basement outer wall (Fig. 1). 3. At a predetermined location on the indoor-side exposed surface of each steel pile 11, that is, on the exposed surface of each steel pile, in a row along the web, and at a predetermined vertical position while maintaining a predetermined height relationship, a plurality of One end of each separator 7 is welded 73 to project horizontally and parallel toward the inside of the room. The separator 7 in this case is a strip-shaped steel plate 71, and a square pipe insertion hole 72 is formed at the other end (FIG. 5). 4. The inner wall half Pca plates 5 prepared in advance are successively built in the depressions 41 in correspondence with the piles of the steel piles 11. At that time, the separators 7 protruding from the steel piles 11 are formed.
Are positioned at the joints of the built-in inner wall half Pca plates, and the other end portions of the respective inner wall half Pca plates are projected toward the indoor side (FIGS. 2 to 5). Then, the square pipes 8, that is, the lateral ends are inserted into the square pipe insertion holes 72 of each separator 7 to form the inner wall halves Pc.
The a plate 51 is supported at a fixed position (the same figure), and the joint between the inner wall half Pca plates is closed with a piece of wood D or the like (FIG. 3). Further, a reinforcing bar 52 is provided between each inner wall half Pca plate 51 and the mountain stopper 1 (FIG. 2), and concrete 53 is cast to construct the underground outer peripheral wall 5 (FIG. 1). In addition, the bar arrangement 52 between each inner wall half Pca plate 51 and the mountain stopper 1 may be preceded before each inner wall half Pca plate 5 is installed. 1 to 3, 6 is
The girders 61 and 62 are steel frames and beam reinforcements of the girders, and B is a girder formwork, which should be constructed at the same time as the underground outer peripheral wall 5. 5. The remaining portion of the recess 41 on the indoor side is filled with waterproof mortar 91 to form a drainage groove 9 which also serves as a flash for the inner wall half Pca plate (FIGS. 1, 2, and 6). In addition, in order to further enhance waterproofness, it is advisable to take other waterproofing means 92. This drainage groove 9 may be communicated with the drainage means 9a previously formed in the foundation beam 3 to the basement slab 4 and the like as in the conventional case. 6. After removing the square pipe 8, the wood piece D, etc. and cutting off the projecting portion of the plate 71, the inner peripheral wall 5a is constructed on the indoor side with the drain groove 9 interposed (FIG. 1).

7 and 8 show a second embodiment according to the inventions of claims 1 to 3. In this case, in the previous example, the plate is replaced with the bolt 74 in order to facilitate the welding of the separator 7 and the attachment / detachment of the square pipe 8. In other words, each bolt that is the separator 7 74
Weld 73 to each steel pile 11 at one end. This welding may be so-called stud welding. A box metal member 75 for receiving the square pipe 8 is joined to the other end of each bolt 74. Others are the same as the previous example, and the description thereof will be omitted.

9 to 10 show claims 1 to 3.
3 shows a third embodiment according to the invention. in this case,
In the first embodiment, the width of each inner wall half Pca plate 51 is slightly narrowed to widen the width of the seam, and the seam is closed by the narrow weir board 10 made of plywood, which is applied to the indoor side. 7 is replaced with a bolt 74 as in the previous example, the other end of the bolt is penetrated through the weir plate 10, a large washer 75 made of a channel material is fitted and brought into contact with the weir plate 10, and a nut 76 is screwed. The inner wall half Pca plates 51 and the respective weir plates 10 are supported by tightening. Therefore, in this case, the square pipe 8 is not necessary, and the positional flexibility of the separator 7 is improved. The bolt 74 may be connected with a long nut. Others are the same as those in the first embodiment, and the description thereof will be omitted.

FIG. 12 shows an embodiment according to the invention of claim 4. In this example, a pair of left and right small window holes 54 into which the forks of the fork lift are inserted are formed in the upper half of the inner wall half Pca plate 51 described in the above embodiments.
Therefore, the fork lift lifts the inner wall half Pca plate.
The 51 can be moved upright and can be built as it is.

In the above embodiment, as shown in FIG. 13, if the concave step portions 55 are formed on both side edges of each inner wall half Pca plate 51 and the rubber sheets 56 are used to close the adjacent portions, it becomes A water leakage channel can be formed in the outer peripheral wall 5.

[0011]

According to the inventions of claims 1 to 4, (1) by using the inner wall half Pca plate and driving it into the underground outer peripheral wall, the conventional formwork becomes useless, and the inner wall half Pca plate becomes unnecessary. The Pca plate has high rigidity and mechanical strength, and since the separator that supports it is welded and integrated with the steel piles of the mountain stopper, it can be strongly supported, and the support work can be greatly simplified. It can be greatly reduced. (2) Most of the materials that are diverted are supporting materials, and since this supporting material is also extremely small, lifting can be completed easily in a short period, and there is no delay in lifting, The inconvenience of being affected by the construction work of the floors does not decrease the conversion rate, and the labor for conversion can be reduced. (3) Since the inner wall half Pca plate to be driven is not used and the conventional formwork using plywood is not used, the amount of wood used can be greatly reduced, the problem of environmental destruction due to large-scale logging of forests can be solved, and industrial disposal You can reduce things as much as possible. And so on. According to the invention of claim 3, the drainage groove for water leakage treatment formed immediately below the inner wall surface of the underground outer wall is automatically filled with mortar for the inner wall half Pca board burrs as the inner wall half Pca board is installed. It is possible to reduce the labor and construction period by eliminating the drainage work. Furthermore, according to the invention of claim 4, the fork of the forklift can be inserted into a small window provided in the half Pca plate, and the half Pca plate can be lifted upright by the forklift.
And because it can be moved and built in as it is, handling,
Installation is extremely easy and reliable.

[Brief description of drawings]

FIG. 1 is a cut-away side view after construction showing a first embodiment according to an underground peripheral wall half Pca plate construction method of the inventions of claims 1 to 3. FIG.

FIG. 2 is a cutaway side view of the same example during construction.

FIG. 3 is an inner view of the same example during construction.

FIG. 4 is an enlarged cutaway plan view of a main part of the same example during construction.

FIG. 5 is an enlarged cutaway perspective view of a main part of the same example during construction.

FIG. 6 is an enlarged cutaway side view of a main part of the same example during construction.

FIG. 7 is a cutaway side view during construction showing a second embodiment of the underground outer peripheral wall half Pca plate construction method of the inventions of claims 1 to 3. FIG.

FIG. 8 is an internal view of the same example during construction.

FIG. 9 is a cutaway plan view during construction showing a third embodiment of the underground outer peripheral wall half Pca plate construction method of the inventions of claims 1 to 3.

FIG. 10 is an internal view of the same example during construction.

FIG. 11 is an enlarged cutaway perspective view of a main part of the same example during construction.

FIG. 12 is an inner view showing an embodiment of a half Pca plate according to the invention of claim 4;

FIG. 13 is a cutaway plan view showing a modified example according to the invention of claims 1 to 4.

FIG. 14 is a cutaway side view showing a conventional construction example during construction.

FIG. 15 is an inside view of the same example during construction.

[Explanation of sign]

 1 Mountain stop 11 Steel pile 2 Foundation slab 3 Foundation beam 4 Basement slab 5 Underground outer wall 51 Inner wall half Pca plate 511 Rebar 512 Wave bar 52 Bar 53 Concrete 54 Window 55 Recessed step 56 Rubber sheet 6 Large beam 61 Steel frame 62 Beam reinforcement 7 Separator 71 Plate 72 Square pipe insertion hole 73 Welding 74 Bolt 75 Washer 76 Nut 8 Square pipe 9 Drainage groove 91 Mortar 92 Waterproofing means 9a Draining means 10 Weirboard B Large beam form D Wood piece

 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Ken Mitsui, 18-22 Nishiki, Naka-ku, Nagoya-shi, Aichi Prefecture Takenaka Corporation Nagoya Branch Office (72) Inventor Atsushi Ichikawa Nishiki, Naka-ku, Aichi 1-chome 18-22 Stock company Takenaka Corporation Nagoya Branch

Claims (4)

[Claims] 1. An inner wall half Pca plate is arranged by welding one end of a subterranean outer peripheral wall separator to a steel pile of root stopper after root cutting, and arranging an inner wall half Pca plate at a predetermined interval from the root stopper. A half Pca plate construction method for the underground outer peripheral wall, characterized in that the plate is appropriately fixed at the other end of each of the separators, a bar is provided between the mountain stopper and each inner wall half Pca, and concrete is placed. . 2. The width of each of the inner wall Pca plates is adapted to the pile spacing of the pile retaining steel piles and arranged at corresponding positions between the piles, and the separators are passed through the joints of the inner wall half Pca plates to each inner wall half Pca. The method for constructing a half Pca plate for an outer peripheral wall according to claim 1, which supports the plate. 3. A basement slab constructed on a foundation beam is moved toward the indoor side so that the outer periphery of the foundation beam above the foundation girder has a recess lower than the basement slab and slightly larger than the basement outer wall. And each inner wall half Pca is formed in the depression.
The half Pc of the underground outer peripheral wall according to claim 1 or 2, wherein a plate is built, and mortar is filled in the remainder of the depression on the indoor side to form a drain groove that also serves as an inner wall half Pca plate burr.
a Plate construction method. 4. A half Pca plate for an outer peripheral wall of a basement, characterized in that a small window hole for inserting a fork of a forklift is formed in an appropriate place of a half Pca plate body having a completed front surface and an unfinished back surface.