JPS5914135B2 - How to build a parapet - Google Patents

Description

[Detailed Description of the Invention] This invention creates a series of balustrade components such as handrails, balustrades, and handrail bases using a frame or support material made of alkali-resistant glass fiber reinforced concrete (hereinafter referred to as GRC). Assembling a parapet that takes advantage of the characteristics of frame materials, support materials, etc. is related to the disclosure of a new method of constructing a parapet that aims to create structure, strength characteristics, and good appearance characteristics.

Therefore, in the past, when constructing this type of balustrade, especially a stone pillar-like balustrade that also served as a decoration, concrete stone materials such as marble were cut, polished, and then fitted one by one. , A special formwork for the balustrade is erected on the slab surface and concrete is poured, and the concrete is formed integrally with the slab, and the pillar part and the balustrade part are created using P, C materials, etc. This is generally installed by joining them together.

However, the use of natural stone has disadvantages in terms of cost, such as the extremely high cost of such stone and the high cost of masonry, and the number of stonemasons with the skills to do so has been decreasing in recent years. In addition, due to its poor durability, especially impact resistance, it lacks practical use except for relatively special purposes.

In addition, molding the parapet as an integral piece requires a lot of carpenters' time and labor to form the formwork, requires special reinforcing treatment when pouring concrete, and the plastering process is also relatively slow. Although it requires advanced technology, the appearance and durability of the finished product are not always satisfactory, and although it is commonly used, it is not always well received. It wasn't.

Due to these circumstances, there has been a recent trend in the process of assembling balustrades using P and C materials, and quality control such as strength and fitting dimensional accuracy required for balustrade materials is easy. It has many advantages, such as the fact that the outer cover can be freely formed when configuring the parts, the installation cost is relatively low, and the durability is sufficient.

However, in the case of P and C materials, which are malleable, the reinforcing bars must be placed at the time of production in order to create special strength, and special techniques and many construction techniques are required to construct such reinforcing bars. This required a lot of time and effort, and required thickening and rust prevention treatment to fully demonstrate the strength of the inserted reinforcing bars.

In addition, as mentioned above, P and C materials require a sufficient concrete area around the inserted reinforcing bars in order to maintain the strength of the reinforcing bars, and in cases where there is no sufficient surrounding area with such concrete, This also causes the problem of rusting of inserted reinforcing bars,
This not only caused a simple deterioration in the strength of the P and C materials, but also caused staining of the exterior surface due to rust.

Since then, P and C materials have been inevitably heavy, which has caused difficulties in handling and construction, and has also resulted in the disadvantage of significantly increasing the structural weight of balcony slabs and the like.

In addition, in P and C materials, sufficient strength has been created at the part where the reinforcing bars are inserted, but it is particularly difficult to create strength at the edges of holes such as mounting holes. P due to damage to the edge of the lever mounting hole.

This includes the risk of C material falling off. The present invention has been devised especially in view of the inconveniences in the prior art, and the inconveniences of the conventional P, C, etc. materials are solved by using GRC materials as all the materials that make up the balustrade. Oh, again?
Utilizing the characteristics of GRC material, it has good manufacturability, ease of handling, ease of assembly, etc., and is relatively low cost and robust (trtl), making it possible to create handrails with good appearance characteristics. .

The details of the present invention are shown in the drawings below in a typical embodiment (to explain C), first, short fibers of alkali-resistant glass fibers are mixed with admixtures, sand, gravel, and other aggregates at a weight ratio of about 3 to 8. etc. are mixed into cement and formed using spray suction or other appropriate methods to form the balustrade 1, base frame 2, base cover plate 3, handrail frame 4, and handrail cover plate 5 into forms, thereby providing a handrail member made of GRC material. This is what I did.

Therefore, this handrail member is intended to be closely connected to each other, and the assembly has a unique configuration 2 due to the above problem, a typical configuration example of which is explained in Fig. 2. In this case, the handrail 1 is made into a post-like structure having an external shape for the purpose of decoration, and a female screw member 6 is integrally embedded directly at the upper and lower joint ends thereof.

The base frame 2 is gutter-shaped and has mounting holes 2a formed at equal intervals on its bottom to be as thin and lightweight as possible. 3 has a plurality of engagement grooves 3a on the bottom surface which are fitted into the upper end of the frame 2, and a recessed part 3b into which the lower end of the handrail 1 is fitted.
are recessed at equal intervals on the upper surface, and bolt insertion holes 3c are provided in the bottom surface of the recessed portions 3b.

Next, the handrail frame 4 is shaped like a gutter, and the bottom surface thereof has recesses 4a at equal intervals into which the upper ends of the handrails 1 are fitted.
The bolt insertion holes 4b are formed in the concave portion 4a, and the handrail cover plate 5 is fitted onto the handrail frame 4, with the edge flange 5a facing the longitudinal direction. It is integrated.

After molding the parapet component, the foundation frame 2 is first placed on the slab or slab rising base 7, and this frame 2 is connected to the slab or slab rising base 7 using a home anchor 8 or the like. , and the gutter-like groove in the frame 2 is filled with mortar 9, the anchor bolt 10 is buried in the mortar 9, and the momme cover plate 3 is fitted.

For such a lower structure, the handrail 1 is fixed upright on the recess 3b of the cover plate 3 by screwing into the upright anchor bolt 10, and then the handrail 1 is installed and fixed on the recess 3b of the handrail frame 4. The handrail frame 4 is horizontally supported on the handrails 1 to 1 so that the upper end of the handrail 1 fits into the part 4a, and the handrail frame 4
A bolt 11 inserted through the hole 4b is screwed into a female screw member 6 attached to the handrail 1 and tightened.

In this way, the gutter-shaped gap in the handrail frame 4 connected to the handrail 1 is filled with mortar 12, and the cover plate 5 is fitted and secured, thereby creating the upper structure of the handrail.

In the present invention, other considerable design changes were planned for the basic mounting on the inclined surface, and the third
The figure shows an example in which an anchor bolt 12 is embedded and fixed integrally in the balustrade 1 as a replacement for the bolt 11 described above, and the platform anchor 8 and anchor bolt 10 described above are also used when attached to the lower part. Anchor bolt 1 to replace
3 is integrally fixed to a slab or slab rising base 7 with a filling film.

In addition, in the other embodiments shown in FIG. 4, the screwing or screwing structure that is attached diagonally upward is omitted, and an example is shown in which the anchor is bent. Anchors 14 and 15 are integrally embedded and fixed in advance on the end face, and similar anchors 16 are installed in the slab or slab rising base 7.
It is integrally buried and fixed, and serves as a connector for each parapet component.

The configuration and installation of the present invention on an inclined plane consist of steps,
First of all, by using GRC material, there is no need to insert reinforcing bars at all, eliminating the need for reinforcing bars and other inconveniences, as well as eliminating the problem of rust, making it possible to create sufficient strength despite the lightweight and thin frame. It is what was done.

In particular, the strength of the mounting holes in each of the parapet members is made to be sufficient, eliminating any fear of the members falling off due to damage to the mounting holes.

In addition, with GRC materials, the insertion of reinforcing bars remains unchanged, so there is no problem in specifying shapes due to thin walls and weight reduction, and it is possible to freely create any external shape. In particular, it is possible to easily diversify the external shapes of the frame member and the balustrade 10.

Furthermore, by using GRC material, when assembling a parapet, the impact resistance and bending strength characteristics of the parts are significantly improved, and the molded surface is dense, making surface treatment, especially resin coating finishing, etc. That is.

In particular, the excellent weather resistance properties of GRC materials make them ideal for use as balustrade materials that are placed under harsh conditions where weathering is likely to occur, ensuring that falls and other accidents caused by damage to the balustrade due to weathering are avoided. This could have been prevented.

In addition, it is relatively easy to cut the parts during installation, and the good molding properties ensure the creation of a mating surface, resulting in high fitting accuracy and easy installation after fitting. This eliminates problems such as lateral displacement and rattling, and the construction cost is significantly lower due to the simple screwing of the handrail in line with these characteristics. It is something that

[Brief explanation of the drawing]

FIG. 1 is a front view showing a typical embodiment of the present invention;
FIG. 2 is a cross-sectional view showing an assembled state, and FIGS. 3 and 4 are cross-sectional views showing an embodiment of the same. In the same figure, 1... Baluster, 2... Base frame, 3... Base type plate, 4... Handrail frame, 5... ... Handrail type plate, 6 ... Female screw member, 7 ... Slab or slab rising base, 8 ... Home anchor, 9 ... Mortar, 10 ...Anchor bolt, 11...
...Bolt, 12...Mortar, 13...
...Anchor Pol), 14-16... Anchor is shown.

Claims (1)

[Claims] 1. A pillar-shaped balustrade having an arbitrary external shape, a gutter-shaped base frame, and a base cover plate that is fitted and fixed to the upper surface of the base frame and has a recess into which the lower end of the balustrade is fitted. , a gutter-shaped handrail frame that is placed on the upper end of the handrail and has a recess into which the upper end of the handrail fits, and a handrail cover plate that is fitted and attached to the upper surface of the handrail frame are reinforced with alkali-resistant glass fiber. A process of molding each piece of concrete, and a process of placing and fixing the molded base frame on a slab or slab standing base, pouring mortar into the base frame, and fitting a base cover plate. Then, the process of sequentially erecting and fixing the handrail on this base cover plate, the process of placing and fixing the handrail frame on the standing handrail, and the process of pouring mortar into the handrail frame and fixing the handrail. A method for constructing a parapet, characterized by comprising the steps of fitting and attaching a cover plate.