JPS61221402A - Construction of running road for tramcar - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

[Detailed description of the invention] <Industrial application field> The present invention relates to a method of constructing a running track for trains.

<Conventional technology> When laying rails on a concrete track bed, there are the following interlayers.

B. Sleepers on the concrete track bed must be installed at the correct height and position.

However, the shape of the concrete track bed is not precise, so determining the height and position of the sleepers while inserting wedges is a time-consuming task.

Closing> The sleepers must be fixed by placing filler concrete around the sleepers that have been positioned at the specified height and position.

In this way, the surface of the trackbed concrete is set somewhat low (
After that, the double work of pouring filler concrete is required.

Kuha> Due to the increase in the weight of concrete sleepers and filler concrete, the load applied to the slab increases.

Therefore, the dimension on the slab side becomes excessive.

OBJECTS OF THE INVENTION The present invention has been made to improve the above-mentioned problems, and an object of the present invention is to provide the following method of constructing a train running track.

Kui〉Construction method that makes it easy to adjust the height of the rail Kuuchi〉A construction method that can be completed with just one concrete pouring of the slab base and eliminates the need for a second pouring of filler concrete. <Structure of the present invention> Next, an example of the construction method of the present invention will be explained.

〉Installation of 20 girders Place 20 girders 2 in two parallel rows on the bridge abutment or other foundation 1. (FIG. 21) A plurality of embedded nuts 21 are embedded in the upper surface of the 20 digits at regular intervals during manufacturing at a factory.

Attachment of bolts (Fig. 3) Screw the bolt 22 vertically into the embedded nut 21.

Therefore, on the upper surface of the PCC girder, a plurality of bolts 22 (four bolts at the lii location in the embodiment) are vertically arranged at predetermined intervals.

At the same time, 20-digit 2 bottom formwork 3 for slab concrete pouring is installed.
be installed between.

Kuha〉Attachment of Temporary Phase (Fig. 4) A steel plate with bolt holes drilled in multiple locations is used as the receiving plate 41 and attached on the bolts 22.

By rotating a nut 42 located at the bottom of the receiving plate 41, the height of the receiving plate 41 can be set correctly.

The temporary phase 4 is placed on this receiving plate 41 so as to be positioned in the transverse direction of the rail.

The temporary phase 4 is a square column made of steel, and an elongated hole is opened in the longitudinal direction on the upper surface thereof.

A vertical bolt is set in the long hole so that it can move along the long hole.

Kuni〉Laying the rails (Fig. 5) A rail 5 is laid on the temporary phase 4 in the orthogonal direction.

In this case, the temporary fixing tool 51 for temporarily fixing the rail 5 is the temporary fixing tool 51.
Since the rail 5 can be moved along the elongated hole, the transverse position of the rail 5 can be easily corrected.

Of course, readjustment in the vertical direction can be made at this stage.

Kuho〉Installation of holding plates, etc. (Fig. 1) Since the temporary phase 4 is a plate member for adjusting the position and direction, a holding plate 6, which is a plate that permanently holds the rail, is installed on the underside of the rail 5. Be suspended.

An embedded nut 61 and the like are further suspended from the holding plate 6.

Since the rail 5 is already set in the correct direction and height, the holding plate 6 to be suspended from the rail does not need to be measured in height or position, and is a simple task of simply attaching it.

If this track is a track for a linear motor car, an embedded nut 7 for attaching the reaction plate may be positioned between the rails 5.

However, since the embedded nut 7 cannot be floated in the air, it is sufficient to connect the rails 5 with a band plate 71 and fix the embedded nut 7 at an accurate position on the lower surface of the band plate 71.

This strip plate 71 will also be removed later.

Placement of slab concrete (Fig. 6) Raise the rail 5 etc. to the correct position in the upper space of the 20 girder 2, and place the concrete 8 with embedded bolts 61, embedded nuts 7, etc. hanging from the rail 5. to be poured.

At this time, the area around the temporary phase, etc., which will be removed later, is left in a groove-like recessed state.

〉Removal of temporary phase, etc. (Figure 7) After the concrete 8 has hardened, the connection between the temporary phase 4, strip plate 71, etc. and the rail 5 is dismantled, pulled out to the side, and removed.

This is to prevent signal electricity from flowing between the rails, so it may be possible to insulate them and not remove them.

Since the volume after extraction is small, it is easy to fill the remaining space with mortar 9 or the like.

Effects of the Present Invention> Since the present invention is as described above, the following effects can be expected.

Kui> Before pouring concrete, support the rail with a group of bolts and a temporary structure (.

Therefore, height adjustment and transverse position adjustment are extremely easy.

After suspending the support plates to which the rail will be fixed in the future, concrete is poured onto the rail, which is suspended in the air at a precise position supported by a group of bolts.

Therefore, the rails are fixed onto the hardened concrete exactly in the designed position.

<C> Therefore, there is no need for the conventional work of arranging sleepers on a slab and adjusting the height, and there is also no need for work to transport or lay sleepers in places with poor footing.

2〉The structure can be completed by simply placing slab concrete, so there is no need for conventional filler concrete.

Therefore, unnecessary dead loads are reduced, and the dimensions of the lower structure can be reduced to the minimum necessary.

[Brief explanation of drawings]

Figure 1: An explanatory diagram of the state during construction of an embodiment of the construction method of the present invention. Figures 2 to 7: An explanatory diagram of the construction order. 21: Embedded nut 22: Bolt 4: Temporary phase 5: Rail 6: Retaining plate 71: Band plate applicant Tokyu Construction Hitotsuji Co., Ltd. Figure 2

Claims (1)

[Claims] Before placing slab concrete, a rail is placed via a temporary girder on bolts erected vertically in the slab space, and after setting the height and direction of the rail, it is hung on the rail. A method of constructing a train running track by pouring slab concrete while burying the lowered rail fixing components etc.