JP3776254B2 - Water-stop structure at the bottom end of sweeping sash in structure and its construction method - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a water-stopping structure at the lower end of a sash for a reinforced concrete or steel-framed reinforced concrete structure, and a construction method thereof.
[0002]
[Prior art]
As a water stop method for the bottom end of the sash in a reinforced concrete structure or steel reinforced concrete structure apartment, there is a method of constructing a raised part at the same time when floor concrete is placed, or a step between the balcony and the indoor side. It has been taken. However, the former was a floating formwork, and its height was only small, making it difficult to achieve accuracy. On the other hand, the latter has a problem that it cannot be formed in a steel reinforced concrete structure. For this reason, there are many cases where the start-up part is constructed by post-coating or waterproof mortar. In the case of this post-coating, as shown in FIG. 6, after placing the floor concrete 23, the water stop plate 24 is pierced into the concrete 23 and the concrete 26 of the rising portion 25 is placed.
[0003]
[Problems to be solved by the invention]
However, in the case of post-casting as described above, it is difficult to pierce the water stop plate into the floor concrete, and the water stop plate is supported by the floor concrete that has just been placed. There was a problem of causing misalignment and tilting.
[0004]
The present invention has been made in view of such a problem, and an object of the present invention is to provide a water stop structure that can sweep out the water stop plate and can be accurately installed on the rising portion at the lower end of the sash and a construction method thereof. is there.
[0005]
[Means for Solving the Problems]
The water stop structure at the lower end of the sash sash in the structure, which is a means for solving the above problems, has a water stop plate embedded from the rising portion of the lower end of the sash to the inside of the floor, and the water stop plate is appropriately The jointing material provided at every interval is inserted into the steel beam or the reinforcing steel sheath inside the floor and fixed to the steel beam or the steel reinforcing bar, and the jointing material has an adjusting nut for adjusting the installation height and level of the waterstop. The water stop plate provided is characterized in that a short plate of a predetermined length is formed by joining them in the length direction via a sealing material. The water stop plate includes an embossed steel plate.
The structure of the water stop structure at the lower end of the sweeping sash in the structure is to assemble a steel beam or slab reinforcing bar and formwork, and then install a water stop plate on the sheath pipe standing on the steel beam or slab reinforcing bar. After inserting the joining material and installing the water stop plate whose height and level are adjusted with the adjusting nut provided on the joining material in the place where it is placed from the rising part of the lower end of the sash to the inside of the floor, the formwork It is characterized by placing concrete in
[0006]
Since the water stop plate is fixed by the steel beam, it can be reliably and accurately installed at a predetermined location without being displaced or tilted when placing concrete. In addition, since the water stop plate can be installed with a sheath tube, anyone can easily install it on the site without requiring a skilled engineer. Moreover, it can form according to the length of a starting part in a field by connecting a short board and forming a water stop board. Further, the water stop plate can also be used as a sash anchor.
[0021]
DETAILED DESCRIPTION OF THE INVENTION
DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Embodiments of a water stop structure and a construction method for a lower end portion of a sweeping sash in a structure of the present invention will be described below with reference to the drawings. In the present embodiment, a water stop structure at the lower end of the sash in the steel reinforced concrete structure and a construction method thereof will be described.
[0022]
FIG. 1 is a sectional view of a balcony of a steel reinforced concrete structure, and FIG. 2 is an enlarged sectional view of the balcony.
[0023]
As shown in FIG. 1, the water stop structure 1 at the lower end of the sash is fixed to a steel beam 6 with a water stop plate 4 embedded from the rising portion 2 to the interior 3 of the floor by a joining material 5 such as a reinforcing bar. .
[0024]
As shown in FIG. 3, the water stop plate 4 is an embossed steel plate, and a bonding material 5 provided at appropriate intervals is fitted into the sheath tube 8 of the upper flange 7 in the steel beam 6 so as to be reliably and accurately fixed. ing. Therefore, the adhesive force with the concrete 9 is large, and the water stop performance is higher than the conventional water stop structure. An adjustment nut 10 is screwed onto the bonding material 5, thereby adjusting the installation height and levelness of the water stop plate 4. The water stop plate 4 may be a single plate, but may be formed by connecting short plates 4a and 4b as shown in FIG.
[0025]
(1) of FIG. 5 is a water stop plate 4 in which the fitting end portions 13 and 14 of the short plates 4a and 4b are fitted in the concave portions 11 and 12 at the ends of the short plates 4a and 4b. Further, the sealing material 15 provided in the recesses 11 and 12 enhances the water-stopping property. Further, (2) and (3) in the same figure show a stop formed by fitting the fitting recesses 18 and 19 of the other short plate 4b to the projections 16 and 17 provided at the end of one short plate 4a. The water plate 4 is different in that the protrusion 16 of (2) is a planar circle, whereas the protrusion 17 of (3) is a planar square. This water stop plate 4 also has the same water stop as described above. Further, the anchor bar 22b of the sash frame can be attached to the water stop plate 4 by welding or the like.
[0026]
Next, a construction method of a water stop structure using a single water stop plate will be described. First, the steel frame 6 and the slab reinforcing bar 20 are arranged to assemble the formwork, but the formwork of the rising portion is also assembled at the same time (not shown).
[0027]
As shown in FIGS. 2 and 3, a sheath pipe 8 erected on the fixing plate 21 is installed on the upper flange 7 of the steel beam 6 by welding or the like, and a joining material for the water stop plate 4 is attached to these sheath pipes 8. 5 is inserted. Thereafter, the adjustment nut 10 of the bonding material 5 is operated to adjust the height and level of the water stop plate 4, and the water stop plate 4 is installed at the boundary between the floor surface 22 and the rising portion 2. When the water stop plate 4 is formed by connecting the short plates 4a and 4b in FIG. 5, the short plate 4a and 4b are connected to each other from the beginning to form the water stop plate 4 and installed. There is a method of connecting and forming 4a and 4b one by one.
[0028]
After the water stop plate 4 is installed as described above, when the concrete 9 is placed in the formwork, the water stop structure 1 in which the water stop plate 4 is installed at the boundary between the floor surface 22 and the rising portion 2 is obtained. Built. Thus, since the water stop plate 4 is fixed by the steel beam 6, when placing the concrete 9, it can be reliably and accurately installed at a predetermined location without being shifted or inclined. Moreover, since the water stop plate 4 can be installed with the sheath tube 8, anyone can easily install it on the site without requiring a skilled engineer. Furthermore, by forming the water stop plate 4 by connecting the short plates 4a and 4b, the short plate 4a and 4b can be formed according to the length of the rising portion 2 at the site.
[0029]
In addition, in this Embodiment, although the water stop structure of the steel frame reinforced concrete structure and its construction method were demonstrated, it is performed also in a reinforced concrete structure with the same structure and the same construction method. In this case, the sheath tube 8 shall be installed in a reinforcing bar (not shown).
[0030]
【The invention's effect】
Since the water stop plate is fixed to the iron material, the installation accuracy from the rising portion to the inside of the floor is increased.
[0031]
The sweeping sash lower end portion in the reinforced concrete structure or the steel reinforced concrete structure can be formed into a highly accurate water stop structure.
[0032]
The adhesion of the waterstop to the concrete increases.
[0033]
Since the water stop plate is formed by joining short plates of a predetermined length, it is easy to transport to the site and the site construction is also easy.
[0034]
The vertical accuracy of the water stop plate can be increased.
[0035]
The water stop plate can be easily installed and the installation accuracy can be improved.
[0036]
The height and level of the water stop plate can be easily adjusted on site.
[0037]
When the concrete at the rising portion is placed in the mold, the water stop plate is not displaced or tilted, and can be installed reliably and accurately. Moreover, since the water stop plate can also be used as a sash anchor, it is effective. Furthermore, since it can be set after reinforcing bars are set and the formwork is set, it does not interfere with other operations.
[Brief description of the drawings]
FIG. 1 is a sectional view of a balcony of a steel reinforced concrete structure.
FIG. 2 is an enlarged cross-sectional view of a balcony.
FIG. 3 is a perspective view of installing a water stop plate on an upper flange of a steel beam.
FIG. 4 is a front view of a water stop plate.
5 (1) to (3) are plan views of a water stop plate formed by connecting short plates together. FIG.
FIG. 6 is a cross-sectional view of a conventional water stop structure.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Water stop structure 2,25 Rising part 3 Floor inside 4,12 Water stop plate 4a Short plate 5 Joining material 6 Steel beam 7 Upper flange 8 Sheath pipe 9, 26 Concrete 10 Adjustment nut 11, 12 Recesses 13, 14 Fitting End 15 Sealing material 16, 17 Protrusion 18, 19 Fitting recess 20 Slab rebar 21 Fixing plate 22 Floor 23 Floor concrete

Claims (3)

A water stop plate is embedded from the lower end of the sash to the inside of the floor, and the water stop plate is inserted into a steel beam or a rebar sheath pipe inside the floor with a bonding material provided at appropriate intervals. Or it is fixed to a reinforcing bar, and the joint material is provided with an adjustment nut for adjusting the installation height and levelness of the water stop plate, and the water stop plate has a short plate of a predetermined length in the length direction through a seal material. A water stop structure at the lower end of a sash for a structure, which is formed by joining together . The water stop structure at the lower end of the sash in the structure according to claim 1, wherein the water stop plate is an embossed steel plate . After assembling the steel beam or slab reinforcing bar and the formwork, insert the waterstop joint into the sheath pipe standing on the steel beam or slab reinforcement, and adjust the height with the adjustment nut provided on the joint. And a water stop plate adjusted in level, installed in a place that extends from the rising portion of the lower end portion of the sash to the inside of the floor, and then casts concrete into the formwork, and the lower end of the sash in the structure To build a water-stop structure for the head.

Images