JP2905625B2 - Half Pca plate method for underground outer wall - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention
It relates to a ca plate (semi-product precast concrete plate) construction method.

[0002]

2. Description of the Related Art Conventionally, a temporary formwork is generally used for an on-site construction of an underground outer peripheral wall in various concrete buildings. In this case, for example, as shown in FIGS. 14 and 15, an appropriate number of H-shaped steel piles 11 are driven into the ground at predetermined intervals to form the gusset 1, and then the root is cut off and the foundation is cut. A slab and a foundation beam are constructed, an underground floor slab 4 is constructed on the foundation beam, and then a temporary formwork made of plywood or the like is provided on the underground floor slab 4 at a predetermined interval from the damper 1. A, the formwork A is supported by a large number of engaging type separators 76 called so-called "kake-sepa" which are engaged with the flanges of the steel piles 11, and a box metal 77 provided on these separators. Then, the end material (square pipe) 8 of the form A is received, and further reinforced appropriately with a support (not shown).
Formwork A is supported. In addition, in the figure, B is a girder form.

[0003]

However, this form A
Is a one-pressed formwork, so it is necessary to make the support more firm than in the case of a general formwork, and it is necessary to reduce the vertical and horizontal separator spacing and the square pipe spacing. Therefore, there are the following problems. It requires a large amount of formwork and support materials such as plywood, piers, square pipes, separators, box hardware, and supports. When diverting formwork and shoring, many materials must be lifted in a short period of time, requiring a great deal of labor. Also, if the time is delayed, the work will not be easy because the load will be lifted from the lifting opening, and if the time is delayed, the construction of the upper floor will proceed, so it will be more difficult to carry out the material, and・ The diversion rate of the shoring works decreases.
Since it is necessary to provide a drainage groove for water leakage treatment just below the inner wall surface of the constructed underground outer peripheral wall, it is necessary to separately cast upstanding concrete for forming a drainage groove on the basement floor slab 4, and a form C for that purpose Requires labor for arranging reinforcement and placing concrete. In addition, it is necessary to apply a waterproof treatment to the inside of the drainage groove thus formed, which takes a great deal of time and effort. Formwork made of plywood is a large amount of industrial waste, and the worse the conversion rate, the higher the tendency. Therefore, there is a serious problem in the subsequent disposal. In addition, the necessity of large amounts of timber causes problems of environmental destruction due to deforestation.

In recent years, it has been considered to use a driving form made of a concrete plate instead of the above-mentioned temporary form A (Japanese Patent Laid-Open No. 3-81424). But even in this case,
Drainage grooves provided with waterproofing means must be formed under the driving form in advance, which is extremely troublesome. In addition, since it is necessary to use a flash for a driving form below the driving form in order to build the driving form, this impedes the drainage ditch and makes construction extremely difficult. Furthermore, in the case of the driving form, there remains a problem regarding the adhesion of concrete. Therefore, it is hardly seen at all.

[0005] In view of these problems, the present invention uses an inner wall half-Pca plate instead of a driving formwork, eliminates a temporary formwork, simplifies support work, and minimizes material lifting. It minimizes the use of wood and the generation of industrial waste, and simplifies the construction of drainage gutters for water leakage treatment with a constant construction. To solve the above problem.

[0006]

In order to achieve the above object, according to the first aspect of the present invention, a plurality of separators 7 for the underground outer peripheral wall 5 are welded at one end to a steel pile 11 of the mountain retaining device 1 after root cutting. In addition, the periphery of the basement slab 4 to be constructed on the foundation beam 3 is shifted toward the room side, and the outer periphery of the foundation beam 3 on the outer periphery of the building is one step lower than the floor of the basement slab 4 and A recess 41 having a width slightly larger than the thickness of the underground outer peripheral wall 5 is formed, and a plurality of inner wall half-Pca plates 51 are arranged at a predetermined interval from the gusset 1 in a widthwise middle portion of the recess. The inner wall half Pca plate 51 is appropriately fixed at the other end of each of the separators 7, and the ridge 1 and each inner wall half Pc
Reinforcing bar 52 is provided between the a-plate 51 and concrete 53 is cast. Further, the remaining portion of the recess 41 on the indoor side is filled with a waterproof mortar 91 to serve as a flash for the inner wall half Pca plate. 9 is formed.

A second aspect of the present invention relates to the half Pca plate construction method of the underground outer peripheral wall according to the first aspect, wherein each of the inner wall half Pc is provided.
The width of the a-plate 51 is adapted to the pile spacing of the steel piles 11 of the mountain stopper 1, the inner wall halves Pca plates 51 are respectively arranged at positions corresponding to the piles, and the separators 7 are connected to the inner wall halves. The inner half Pca plates 51 are supported through the joints of the Pca plates 51.

[0008] The invention of claim 3 is claim 1 or claim 2.
In the half Pca plate construction method of the underground outer peripheral wall, a small window hole 54 for a forklift is formed at an appropriate position of each inner wall half Pca plate 51, and a forklift forklift is inserted into the window hole by using a forklift. The inner half Pca plate 51 is erected.

[0009]

According to the present invention, the above construction is provided.
In any of the inventions described above, the inner wall half Pca plate 51 is driven into the underground outer peripheral wall 5 to form a part of the underground outer peripheral wall 5,
Useless formwork. Further, the inner wall half Pca plate 51 has much higher rigidity and mechanical strength than plywood and the like, and furthermore, since it is supported by the separator 7 welded to the steel pile 11 of the mountain stop 1, its support is strong. Decrease shoring. The periphery of the basement floor slab 4 plays the role of rising concrete, making the rising concrete unnecessary, and the waterproof mortar 91 packed in the remaining portion of the depression 41 plays the role of a beam for the inner wall half Pca plate. In addition, the drain 9 formed by the mortar 91 itself becomes a waterproof means, and eliminates other waterproof treatment. In addition, in the invention of claim 3, by using a forklift,
The inner wall half Pca plate 51 can be easily moved and set up in a standing posture.

[0010]

1 to 6 show a first embodiment according to the first and second aspects of the present invention. This will be described sequentially according to the construction procedure. 1. Around the building to be constructed, a large number of H-shaped steel piles 11 are driven into the ground at predetermined pile intervals to form a required ridge 1 (FIGS. 1 and 2). Although not shown, appropriate means for preventing collapse of the soil, such as a weir and a bulge, is provided between the steel piles 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 interval of the steel piles 11 and a height suitable for the height of the basement floor wall are produced at a site or a factory. These inner wall half-Pca plates are formed in a thin wall having a completed surface and an unfinished rear surface, and are provided with necessary reinforcing bars 511 therein to increase adhesion and bonding strength with the post-cast concrete on the rear surface. In order to achieve the same, a wave streak 512 or the like is joined to the reinforcing bar and projected to the rear surface (FIGS. 1 to 6). 2. After the excavation in the dike 1, the foundation slab 2, the foundation beam 3, and the basement slab 4 are constructed. At this time, the peripheral edge of the basement floor slab 4 is moved toward the indoor side, and the width of the upper outer edge portion of the foundation beam 3 at the outer periphery of the building is one step lower than the floor surface of the basement floor slab 4 and slightly larger than the thickness of the basement outer peripheral wall. Is formed (FIG. 1). 3. At a predetermined position on the indoor side exposed surface of each steel pile 11, that is, on the indoor side exposed surface of each steel pile 11, in a row along the web and maintaining a predetermined height relationship, a plurality of Is welded 13 at one end to project horizontally and parallel toward the interior of the room. In this case, the separator 7 is a strip-shaped steel plate 71 having a square pipe insertion hole 72 formed at the other end (FIG. 5). 4. Corresponding to the space between the steel piles 11, the previously prepared inner wall half-Pca plates 51 are sequentially built in the recesses 41, and at this time, the separators 7 protruding from the steel piles 11 are formed.
Is positioned at the joint between the built-in inner wall half-Pca plates, and the other end of each is protruded toward the indoor side (FIGS. 2 to 5). Next, the square pipe 8, that is, the lateral end, is inserted into each pipe insertion hole 72 of each separator 7 so that each inner wall half Pc
The a-plate 51 is supported at a fixed position (FIG. 3), and the joint between the inner wall half-Pca plates is closed with a piece of wood D or the like (FIG. 3). Reinforcement 52 is provided between each inner wall half Pca plate 51 and the ridge 1 (FIG. 2), and concrete 53 is cast to construct the underground outer peripheral wall 5 (FIG. 1). The reinforcing bars 52 between each inner wall half Pca plate 51 and the gusset 1 may precede the installation of each inner wall half Pca plate 51. 1 to 3, 6 is
The girders 61 and 62 are steel beams and reinforcing bars of the girders, and B is a girder formwork. 5. The remaining portion of the hollow 41 on the indoor side is filled with a waterproof mortar 91 to form a drain groove 9 which also serves as an inner wall half Pca plate flash (FIGS. 1, 2, and 6). In order to further enhance the waterproofness, it is preferable to take another waterproofing means 92. This drain groove 9 may be connected to a drain means 9a formed in advance on the foundation beam 3 to the basement slab 4 or the like as in the conventional case. 6. After removing the square pipe 8, the wooden piece D, and the like, and cutting off the protruding portion of the plate 71, the inner peripheral wall 5a is constructed on the indoor side across the drain groove 9 (FIG. 1).

FIGS. 7 and 8 show a second embodiment according to the first and second aspects of the present invention. In this case, in the previous example, in order to facilitate the welding of the separator 7 and the attachment and detachment of the square pipe 8, the separator 7 was removed from the plate by bolts 74.
Has been replaced. That is, each bolt 74 as the separator 7 is welded 73 to each steel pile 11 at one end. This welding may be so-called stud welding. Further, a box fitting 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 is omitted with the previous example.

FIGS. 9 to 11 show the first and second aspects of the present invention.
3 shows a third embodiment according to the present invention. in this case,
In the first embodiment, the width of each inner wall half-Pca plate 51 is slightly narrowed to increase the width of the seam, and the seam is closed by a narrow plywood 10 made of plywood applied to the indoor side. 7 is replaced with a bolt 72 as in the previous example, the other end of the bolt is made to penetrate through the weir plate 10, a large washer 75 made of a channel material is fitted to make contact with the weir plate 10, and a nut 76 is screwed. By tightening, each inner wall half Pca plate 51 and each weir plate 10 are supported. Therefore, in this case,
The square pipe 8 is unnecessary, and the positional flexibility of the separator 7 is improved. The bolt 74 may be connected by a long nut. The rest is the same as the first embodiment, and the description is omitted.

FIG. 12 shows an embodiment according to the third aspect of the present invention, in which a fork of a forklift is inserted into the upper half portion of the inner wall half Pca plate 51 shown in the first to third embodiments. A case is shown in which a pair of small window holes 54 on the left and right are formed. In this case, the inner wall half Pca plate 51 can be moved upright by the forklift, and can be erected as it is.

In the above embodiment, as shown in FIG. 13, a concave step 55 is formed on both side edges of each inner wall half Pca plate 51, and a rubber sheet 56 is used to close the space between the adjacent half Pca plates 51. A water leakage channel in the outer peripheral wall 5 can be formed.

[0015]

According to the first and third aspects of the present invention,
The following effects are obtained. (1) The drainage groove 9 for water leakage treatment formed immediately below the inner wall surface of the underground outer peripheral wall 5 can be automatically and easily formed by filling the mortar 91 with the inner wall half Pca plate beam, and the drainage groove construction can be omitted. Labor and construction period can be reduced. (2) Using the inner wall half Pca plate 51,
, The conventional temporary formwork is unnecessary, and the inner wall half Pca plate 51 can be precisely and strongly integrated as a part of the underground outer peripheral wall 5 in structure, and the inner wall half Pca The plate 51 has a high rigidity and a high mechanical strength. Since the separator 7 for supporting the plate 51 is welded and integrated with the steel pile 11 of the mountain stop 1, the plate 51 can be strongly supported, and the support work can be greatly simplified.・ Significant reduction of materials for support works. (3) Most of the materials to be diverted are shoring materials, and the shoring materials can be reduced to a minimum, so that the lifting can be completed easily in a short period of time without causing a delay in lifting. Inconveniences such as being affected by the construction of the building on the floor do not reduce the conversion rate, and the labor for conversion can be reduced. (4) Since a temporary formwork made of plywood is not used as in the past using the half-wall Pca plate 51 to be driven, the amount of wood used can be significantly reduced, and the problem of environmental destruction due to massive logging of forests can be solved. Waste can be reduced as much as possible. (5) In particular, in the invention of claim 3, the inner wall half Pca plate 51
By using a forklift, it is possible to easily move and set up in a standing posture, and the construction can be further facilitated.

[Brief description of the drawings]

FIG. 1 is a cut-away side view after construction showing a first embodiment according to the first and second aspects of the present invention.

FIG. 2 is a cut-away 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 cut-away 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 according to the first and second aspects of the present invention.

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

FIG. 9 is a cut-away plan view during construction showing a third embodiment according to the first and second aspects of the present invention.

FIG. 10 is an inner 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 illustrating an inner wall half Pca plate;

FIG. 13 is a cutaway plan view showing a modification of the main part.

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

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

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 ... Mountain stop 11 ... Steel pile 2 ... Foundation slab 3 ... Foundation beam 4 ... Basement slab 41 ... Depression 5 ... Basement outer peripheral wall 51 ... Inner wall half Pc
a plate 511… arrangement 512… corrugation 52… arrangement 53… concrete 54… window hole 55… concave end 56… rubber sheet 6… giant beam 61… steel frame 62… beam reinforced 7… separator 71… plate 72… square pipe Insertion hole 73 ... Welding 74 ... Bolt 75 ... Washer 76 ... Nut 8 ... Square pipe 9 ... Drain groove 91 ... Mortar 92 ... Waterproof means 9a ... Drainage means 10 ... Weir board B ... Girder formwork C ... Wood piece

──────────────────────────────────────────────────続 き Continuing on the front page (72) Inventor Takeshi Mitsui 18-18-22 Nishiki, Naka-ku, Nagoya-shi, Aichi Nagoya Branch, Takenaka Corporation (72) Inventor Atsushi Ichikawa Nishi-ichi, Naka-ku, Nagoya-shi, Aichi No. 18-22, Takenaka Corporation Nagoya Branch (56) References JP-A-3-81424 (JP, A) (58) Fields investigated (Int. Cl. ⁶ , DB name) E02D 29/00 E02D 31/02

Claims (3)

(57) [Claims] An underground floor slab constructed by welding a plurality of separators 7 for an underground outer peripheral wall 5 at one end thereof to a steel pile 11 of a mountain retaining device 1 after root cutting, and constructing on a foundation beam 3. The outer periphery of the base 4 is moved toward the interior of the building, and a recess 41 is formed at the outer periphery of the foundation beam 3 at the outer periphery of the building, one step lower than the floor surface of the basement floor slab 4 and a width slightly larger than the thickness of the basement outer peripheral wall 5. A plurality of inner wall half-Pca plates 51 are arranged at a predetermined interval from the gusset 1 in the widthwise intermediate portion of the recess, and these inner wall half-Pca plates 51 are appropriately placed at the other end of each of the separators 7. And the half stop 1 and each inner wall half Pc
Reinforcing bar 52 is provided between the a-plate 51 and concrete 53 is cast. Further, the remaining portion of the recess 41 on the indoor side is filled with a waterproof mortar 91 to serve as a flash for the inner wall half Pca plate. 9. The half Pc of the underground outer peripheral wall, characterized by forming 9
a-plate construction method. 2. The width of each inner wall half-Pca plate 51 is adjusted to the pile interval of the steel piles 11 of the gusset 1, and the inner wall half-Pca plates 51 are respectively arranged at the positions corresponding to the piles. Each of the separators 7 is connected to their inner wall half Pca plate.
The half Pca plate construction method for an underground outer peripheral wall according to claim 1, wherein the inner wall half Pca plate 51 is supported through a joint of the 51. 3. A small window hole 54 for a forklift is formed at an appropriate position on each inner wall half-Pca plate 51, and a fork of the forklift is inserted into the window hole. The half Pc of the underground outer peripheral wall according to claim 1 or 2, which is built.
a-plate construction method.