JPH0689530B2 - Drain - Google Patents

Abstract

PURPOSE: To easily build a drainage ditch on a track bed of a subway by installing a synthetic resin mould formed by vertically mounting the side plates having a flange edge on their lower ends from both side edges of a top plate on the roadbed and forming the concrete track bed. CONSTITUTION: A glass fiber reinforced polyester resin mould 1 formed by vertically installing the side plates 12 downwardly from both side edges of a top plate 11, and forming the flange edge 13 outwardly from the lower ends of the side plates 12, is mounted in a state that the flange edge 13 is contacted with the concrete roadbed 31. Then the flange edge 13 is fixed by nails, and a butt part between the adjacent moulds 1 is closed by an adhesive tape to form the concrete track bed.

Description

Description: TECHNICAL FIELD The present invention relates to a drainage ditch in a railroad track, particularly a subway track.

(Prior Art) Conventionally, as a means for draining water that has flowed into a roadbed of a subway or the like, a U-shaped groove with a lid is provided along a side wall on the outside of a rail, and a side for draining through a gap provided in the lid is provided. The drain method or the center drain method for draining water by providing a U-shaped groove with a lid similar to the above on the middle roadbed of two rails was adopted.

(Problems to be Solved by the Invention) However, in the side drain method, the width of the subway yard is increased by the width of the U-shaped groove. In recent years, the width of the subway yard has become narrower, and in many cases the side drain method cannot be adopted. Further, in the center drain method, when the roadbed is thin, it is difficult to secure a space for installing a U-shaped groove under the sleepers supporting two rails, and the load applied to the sleepers causes U
The lid on the groove could be damaged. Further, in order to install the U-shaped groove, a construction method in which a U-shaped groove frame is assembled on site and concrete is poured to simultaneously form the roadbed and the U-shaped groove is used. However, in this construction method, the work of dismantling the formwork is involved, and especially when the railroad of the subway is curved, the formwork of U-shaped groove must be bent and installed at the connection part along the railroad. However, there is a problem that bending and connecting the ends of the formwork is troublesome and time-consuming.

Further, so-called electrolytic corrosion is likely to occur in the reinforcing bars in the concrete due to the influence of the electric current flowing through the rails, and this electrolytic corrosion may damage the concrete surface forming the U-shaped groove.

(Means for Solving Problems) The drainage groove of the present invention is made in order to solve the problems of the above-mentioned prior art, and side plates are provided downward from both side edges of the rectangular top plate. A mold made of synthetic resin, in which a brim is formed outward from the lower end of the side plate, the brim is abutted on the concrete roadbed, and the end edges of the mold are abutted to each other, and the formwork and the concrete roadbed A continuous ditch is formed by and a concrete roadbed is formed on the ditch, and a drainage groove characterized in that a water collecting port opening to the surface of the roadbed is formed at predetermined intervals of the groove. It is a thing.

In the present invention, the synthetic resin mold may be either a thermosetting resin such as a glass fiber reinforced polyester resin or a thermoplastic resin such as a hard polyvinyl chloride resin. These resins are selectively used, and it is preferable to continuously produce these resins by an arbitrary molding method such as an extrusion molding method and a pultrusion molding method. Metallic ones are not preferable because they are heavy and therefore difficult to carry and carry out, and they are expensive and cause rusting.

In addition, the top plate of the synthetic resin mold may be bulged outward in an arc shape in order to increase the load strength.

In addition, when arranging the ends of a plurality of synthetic resin molds butted against each other, the edges are abutted against each other and a cloth, a synthetic resin film or the like is used as a base material from the outside over both molds. The adhesive tape may be attached, and when it is necessary to arrange the mold frame in a curved shape, the end edge of the synthetic resin mold frame may be cut obliquely and placed in abutting relation.

(Operation) In the drainage groove of the present invention, a continuous groove portion is formed on a concrete roadbed by using the above-described formwork, a roadbed is formed on the groove portion, and the roadway surface is opened at predetermined intervals of the groove portion. Since the water intake is formed, the water that has flowed into the roadbed flows into the groove from the water intake and is drained. In addition, since a groove is formed between the roadbed and the formwork, a flat groove is formed by forming the formwork with a wide and low-height cross section, and drainage is achieved even when the bed is thin. It is possible to form a drainage channel with a required cross-sectional area. Further, since the synthetic resin mold is embedded to form the drainage channel, damage to the side surface and the upper surface is eliminated and the construction of the drainage groove can be performed very efficiently.

(Example) Hereinafter, an example of the present invention will be described with reference to the drawings.

The drawings show an example in which the drainage channel of the present invention is installed in a subway premises. In FIGS. 1 and 2, 1 is formed by a drawing method using the glass fiber reinforced polyester resin used in the present invention. In the synthetic resin mold, side plates 12 are vertically extended from both side edges of the top plate 11, and a brim 13 is formed outward from the lower end of the side plate 12. Although the size of the mold 1 is determined by the drainage groove, the width of the top plate 11 is wider than that of the side plate 12, and the length thereof is about 1 to several meters which enables the carrying work.

The formwork 1 is arranged on the concrete roadbed 31 with the brim 13 abutting thereon, and the end edges of the formwork 1 are abutted against each other, and the formwork 1, 1, ...
The continuous groove portion 2 is formed by. This formwork 1
May be simply placed on the concrete roadbed 31, but in order to prevent it from moving during the construction of the roadbed, a nail hole is drilled in the concrete roadbed 31 in accordance with the nail hole 14 drilled in the brim edge 13. It is good to type in. Alternatively, an elastic packing may be used between the brim 13 and the roadbed 31.

Further, it is preferable that the abutting portions of the end edges of the mold 1 have no gap, but even if there is a gap, as shown in FIG. It suffices to stick the adhesive tape 7 across the edge. When it is necessary to form the groove 2 in a curved shape, the end edges of the molds 1 and 1 can be obliquely cut and abutted as shown in FIG. Can be installed. This curve is
It is done along the curve of rail 5.

A concrete roadbed 4 is formed on the formwork arranged as described above. A lower half portion of a sleeper 6 supporting two rails 5 arranged side by side with the formwork 1 sandwiched therein is buried in the roadbed 4.

Further, the water collecting port 15 penetrating the top plate 11 of the formwork 1 and the roadbed 4 and opening to the surface of the roadbed at every predetermined interval of the groove 2 is formed by the roadbed 4.
The water that has flowed up is made to flow into the groove 2, and for example, 30
It is provided at m intervals. A lid 16 having a gap made of concrete or iron is attached to the opening of the water collecting port 15. The water collecting port 15 allows the drainage to flow into the groove 2 as well.
It is also used as an inspection port of the channel 2, and is also used for cleaning by jetting a jet water flow from the water collecting port 15 when dust is clogged in the groove 2 and the drainage condition is bad.

(Effects of the Invention) The drainage groove of the present invention has the above-described configuration, and by forming the mold with a wide and low-height cross-sectional shape, even if the roadbed is thin, A drainage groove can be formed under the floor, and the roadbed is on the formwork, so the strength is great.

In addition, by using a synthetic resin mold, it is lightweight and easy to carry and install.Because it is only necessary to butt and connect the edges of the mold on the concrete roadbed,
Construction work is easy. Further, even when the drainage groove is curved along the rail, the work can be easily performed because the desired curve can be constructed simply by diagonally cutting the edge of the formwork and butt-connecting.

Moreover, since both side surfaces and the upper surface of the drainage groove are formed of a synthetic resin frame, the drainage groove is not damaged by corrosion or electrolytic corrosion.

Further, since the upper surface of the drainage groove is flush with the roadbed except for the water collecting port, there is no problem in walking for inspection work or the like.

[Brief description of drawings]

FIG. 1 is a perspective view showing an embodiment of the drainage groove of the present invention in a partial cross section, FIG. 2 is a cross sectional view taken along line II-II of the same, FIG. 3 and FIG. FIG. 6 is a perspective view showing a butt connection state of a synthetic resin mold used for the drainage groove of FIG. 1 ... Synthetic resin formwork, 2 ... Groove, 3 ... Subway premises, 4 ... Concrete roadbed, 11 ... Top plate, 12 ... Side plate, 13 ... Collar, 15 ... Water collecting port, 31 ...... Concrete roadbed,

Claims (1)

[Claims] 1. A synthetic resin formwork in which side plates are hung downward from both side edges of a rectangular top plate, and a brim is formed outward from a lower end of the side plate, and the brim is applied to a concrete roadbed. They are placed in contact with each other and the edges of the formwork are abutted against each other, and a continuous groove is formed by the formwork and the concrete roadbed, and a concrete roadbed is formed on this, and openings are made on the roadbed surface at predetermined intervals of the groove. A drainage channel, which is formed by forming a water collecting port.