JPH0913302A - Installation method and structure of directly connected sleeper - Google Patents

Abstract

PROBLEM TO BE SOLVED: To increase the workability, by screwing support bolts in support nuts embedded in vertical pierced holes at both ends of a sleeper and removing the support bolts after the level has been adjusted and screwing anchor bolts into the support nuts. SOLUTION: After rails have been fixed on a plurality of sleepers 1 laid on ballast 2, the upper male screw part 17a of a support bolt 17 is screwed in the support nut 16 embedded in the pierced hole 11 of the sleeper 1 to erect the bolt 17 on the ballast 2. Next, the bolt 17 is rotated to adjust the protruded length of the lower male screw part 17b and adjust the level of the sleeper 1. Then an anchor plate 13 is fixed to the male screw 17b through an anchor sheath 18. Thereafter, ballast concrete 3 is placed between the sleepers and the ballast 2 and cured. And further, the bolt 17 is removed and the anchor bolt is inserted in the screw hole 13a of the anchor plate 13 and the sleepers are fixed to the anchor bolts with the nuts. In this way, the level adjustment and the fixing works can be efficiently carried out.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an installation structure and an installation method for a directly-connected sleeper which is installed on a roadbed by being embedded in the roadbed concrete placed on the roadbed.

[0002]

2. Description of the Related Art FIGS. 6 and 7 show an example of a conventional rail direct-connection track and its installation method. In the drawings, reference numeral 1 is a roadbed 2 and roadbed concrete cast on the roadbed 2. P embedded in 3 and installed at regular intervals
C sleepers (hereinafter referred to as "sleepers"), 4 rails laid on the sleepers 1, 5 rail fastening fittings for fixing the rails 4 to the sleepers 1, and a reference numeral 6
Is a drainage channel formed along the longitudinal direction of the track at the center of the track.

Further, reference numeral 7 is a level adjusting jack which is interposed between the roadbed 2 and the rail 4 when the rail 4 is laid, and which adjusts the level of the rail 4, and the reference numerals 8, 9, 10
Are a concrete block, a wooden block, and a wooden camber, which are mounted in order on the track bed 2 and temporarily fix the rail 4 after the level adjustment.

In such a construction, in order to install the sleepers 1 on the track 2 and to lay the rails 4 on the sleepers 1, first, the sleepers 1 are installed on the track 2 at predetermined intervals. The rails 4 are installed on the sleepers 1, and the rails 4 are fixed to the sleepers 1 by the rail fastening bolts 5.

Next, a level adjusting jack 7 is interposed between the track bed 2 and the rail 4, and the level of the sleeper 1 and the rail 4 is adjusted by the level adjusting jack 7. After adjusting the levels of the sleeper 1 and the rail 4, the concrete 8, the wooden block 9, and the wooden chamber 10 are sequentially stacked and interposed between the track bed 2 and the rail 4, and the sleeper 1
And the rail 4 are temporarily supported, and the level adjustment jack 7 is removed. Next, the roadbed concrete 3 is placed between the roadbed 2 and the concrete sleeper 1. And finally, the wooden block 9 and the camber 10 are removed.

[0006]

Since the conventional installation structure and method for directly connecting sleepers are performed by the method described above, not only is it extremely time-consuming and labor-intensive, but various operations are required. I need tools,
There were also problems such as complicated work.

The present invention has been made to solve the above problems, and an object of the present invention is to provide an installation structure and an installation method for a directly-connected sleeper tree which enables easy installation of the sleeper tree.

[0008]

The installation structure for a directly connected sleeper according to claim 1 of the present invention is installed on a roadbed by being embedded in the roadbed concrete cast on the roadbed. In a directly connected sleeper installation structure, a holding nut embedded in through holes formed by vertically penetrating both ends of the sleeper, and inserted through the through hole and screwed to the holding nut, Standing on the roadbed, before the roadbed concrete is placed, holding bolts for holding the sleepers, and after being inserted into the through hole after the holding bolt is pulled out, and in the roadbed concrete An anchor bolt that is screwed into a screw hole of an embedded anchor plate, and a fixing nut that is screwed to an upper end portion of the anchor bolt and that fixes the sleeper are configured. .

According to a second aspect of the present invention, there is provided a method for installing a directly connected sleeper according to the first aspect, wherein the holding bolt is inserted into the through hole of the sleeper and is screwed into the holding nut to secure the road bed. While standing upright, turn the holding bolt to hold the sleeper tree at a predetermined height, then attach an anchor plate to the lower end of the holding bolt, and then between the sleeper tree and the roadbed. Place the concrete on the roadbed, and when the concrete hardens, pull out the holding bolt, insert the anchor bolt after that, screw it into the anchor plate, and then attach the fixing nut to the upper end of the anchor bolt. It is characterized by being screwed together.

[0010]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS FIGS. 1 to 5 show an embodiment of a rail direct connecting track and a construction method therefor according to the present invention.
The same parts as those in the conventional example are designated by the same reference numerals and the description thereof will be omitted.

Further, in FIGS. 1 to 3, reference numeral 11 denotes a through hole vertically formed at both ends of the sleeper 1, and 12
Is an upper curing sheath formed of a metal tube or a synthetic resin tube, and attached inside the through hole 11 to protect the inner wall of the through hole 11, and 13 is formed with a screw hole 13a at the center, and An anchor plate embedded in the roadbed concrete 3, and 14 is formed with an upper male screw portion 14a and a lower male screw portion 14b at the upper end and the lower end, respectively, and has a through hole.
Anchor bolt which is vertically inserted in 11 and whose lower male screw portion 14b is screwed into the screw hole 13a of the anchor plate 13, and reference numeral 15 is an upper male screw portion of the anchor bolt 14.
It is a fixing nut that is screwed to 14a and fixes the sleeper 1. The fixing nut 15 is doubly tightened so as not to loosen.

4 and 5, reference numeral 16 is embedded in the middle portion of the through hole 11 to hold a holding bolt, which will be described later, and 17 is penetrated into the through hole 11 to hold the holding nut 16 and the anchor plate. It is screwed into the screw hole 13a of 13 and is erected on the roadbed 2 and is made of concrete 3
A holding bolt for holding the sleeper tree 1 before placing the slab at a predetermined height and for holding the anchor plate 13 before placing the roadbed concrete 3 between the sleeper tree 1 and the roadbed 2, and a reference numeral 18 Is a lower curing sheath that is formed of a metal pipe or a synthetic resin pipe and is inserted into the lower male screw portion 17b of the holding bolt 17 to prevent the roadbed concrete 3 from adhering to the lower male screw portion 17b of the holding bolt 17. .

The holding bolt 17 is formed with an upper male screw portion 17a and a lower male screw portion 17b which are respectively screwed into the holding nut 16 and the screw hole 13a of the anchor plate 13 at the middle portion and the lower end portion, The lower male screw part 17b is the upper male screw part 17a.
It is formed thinner.

Next, a method of installing the directly-connected sleeper according to the present invention having such a structure will be described.

(1) First, a plurality of sleepers 1 are installed on the roadbed 2 at predetermined intervals, rails 4 are bridged over the sleepers 1, and each sleeper 1 is secured by the rail fasteners 5. Secure to rail 2.

(2) Next, the holding bolt 17 is inserted into the through hole 11 of each sleeper 1 and the upper male screw portion 17a is screwed into the holding nut 16 to stand the holding bolt 17 on the roadbed 2. To do.

A liner 19 is interposed between the track bed 2 and the holding bolt 17 to stabilize the holding bolt 17.

Further, sufficient oil is applied to the upper male screw portion 17a and the lower male screw portion 17b of the holding bolt 17 to prevent rusting. In particular, grease or the like is applied to the lower end portion of the lower male screw portion 17b (the portion that cannot be covered by the lower curing sheath 18) so that the roadbed concrete 3 before hardening does not adhere.

(3) Next, the level of each railroad tie 1 is adjusted by turning the holding bolt 17 of each railroad tie 1 to appropriately change the protruding length of the lower male screw portion 17b, and each railroad tie 1 is set to a predetermined length. Hold at height.

After adjusting the level of each sleeper 1, be careful not to bend the holding bolt 17 by dragging the sleeper 1 or the like.

(4) Next, when the level adjustment of each sleeper 1 is completed, the lower curing sheath 18 is inserted into the lower male screw portion 17b of the holding bolt 17, and the anchor plate 13 is attached to the lower male screw portion 17b. The lower curing sheath 18 and the anchor plate 13 may be attached before the level adjustment of each sleeper 1.

An elastic sheet 20 such as a rubber sheet is provided on the contact surface of the anchor plate 13 with the lower curing sheath 18.
Glue. Further, the anchor plate 13 is attached to a position where it touches the lower end of the lower curing sheath 18 lightly, and care should be taken not to make strong contact with the lower curing sheath 18.

As described above, the elastic sheet 20 is attached to the contact surface portion of the anchor plate 13 with the lower curing sheet 18, and the anchor plate 13 is not strongly adhered to the lower end portion of the lower curing sheath 18. This is because even after the concrete 3 is hardened, there is slack between the anchor plate 13 and the holding bolt 17 so that the holding bolt 17 can be easily turned and pulled out smoothly.

(5) Next, the roadbed concrete 3 is filled between the sleeper 1 and the roadbed 2, and the roadbed concrete 3 is sufficiently cured. Then, when the roadbed concrete 3 exhibits sufficient strength, the holding bolt 17 is pulled out while being rotated by a rotating jig such as an impact wrench.

(6) Next, after pulling out the holding bolt 17,
The anchor bolt 14 is inserted into the through hole 11, and the lower male screw portion 14b is screwed into the screw hole 13a of the anchor plate 13. Then, the upper male screw portion 14a of the anchor bolt 14
Attach the rubber packing 21 and washer 22 in order, and tighten the fixing nut 15. In this case, the fixing nut
15 is 500kgcm torque Tighten with an appropriate tightening force.

The head of the anchor bolt 14 is a fixing nut.
Make sure that the protruding amount is less than 2 mm from the upper end of 15.

If desired, a grout material such as mortar may be filled around the anchor bolt 14.

(7) Finally, a cap 23 for curing is attached to the upper end of the anchor bolt 14.

[0029]

The installation structure and installation method of the directly-connected sleeper according to the present invention are constituted as described above, and the holding nuts are embedded in the through holes formed by vertically penetrating both ends of the sleeper, and Inserted into the through hole, and
It is screwed to the holding nut and is erected on the roadbed, before the roadbed concrete is placed, the holding bolt for holding the sleeper, and the holding bolt is inserted into the through hole after being pulled out, An anchor bolt that is screwed into a screw hole of an anchor plate that is embedded in the roadbed concrete, and a fixing nut that is screwed to the upper end of the anchor bolt and that fixes the sleeper is constructed. When installing, first insert the holding bolt through the through hole of the sleeper, screw it into the holding nut to stand up on the track, and turn the holding bolt to bring the sleeper to a predetermined height. Then, an anchor plate is attached to the lower end portion of the holding bolt, and then a roadbed concrete is placed between the sleeper and the roadbed. Once the cleat is cured, pulling the retaining bolt, then together inserted anchor bolt, screwed into the anchor plate, then since screwing the fixing nut to the upper end of the anchor bolt,
The structure is extremely simple, and there is an effect that the level adjustment of the sleeper and the fixing of the sleeper can be performed very efficiently.

[Brief description of the drawings]

FIG. 1 is a vertical sectional view showing an example of a track according to the present invention.

FIG. 2 is a vertical cross-sectional view showing a mounting state of anchor bolts.

FIG. 3 is an enlarged vertical sectional view showing a mounting state of anchor bolts.

FIG. 4 is a vertical cross-sectional view showing an example of a method of installing a sleeper according to the present invention.

FIG. 5 is an enlarged vertical sectional view showing a mounting state of holding bolts.

FIG. 6 is a vertical cross-sectional view showing an example of a conventional method of installing a sleeper.

FIG. 7 is a partial cross-sectional view of FIG.

[Explanation of symbols]

1 ... Pillow, 2 ... Roadbed, 3 ... Roadbed concrete, 4 ...
Rails, 5 ... Rail fasteners, 6 ... Drainage channels, 7 ... Level adjustment jacks, 8 ... Concrete blocks, 9 ... Wooden blocks, 10 ... Wooden cambers, 11 ... Through holes, 12 ... Upper curing sheath, 13 ... Anchor plates, 14 ... Anchor bolt, 15 ... Fixing nut, 16 ... Holding nut, 17 ... Holding bolt, 18 ... Lower curing sheath, 19 ... Liner, 20 ... Elastic sheet, 21 ... Packing, 22 ... Washer, 23 ... Cap.

Claims (2)

[Claims] 1. A direct-connecting sleeper installation structure that is installed on a roadbed by being embedded in the roadbed concrete that is cast on the roadbed, and is formed by vertically penetrating both ends of the sleeper tree. A holding nut embedded in a through hole, inserted into the through hole, and screwed to the holding nut to stand upright on the roadbed, before the roadbed concrete is placed, the sleeper A holding bolt for holding, an anchor bolt that is inserted into the through hole after the holding bolt is pulled out, and is screwed into a screw hole of an anchor plate embedded in the roadbed concrete, and an upper end of the anchor bolt An installation structure for a directly connected sleeper, comprising a fixing nut that is screwed to the portion and that fixes the sleeper. 2. The holding bolt according to claim 1, wherein the holding bolt is inserted into the through hole of the sleeper and is screwed to the holding nut to stand upright on the roadbed, and the holding bolt is turned to secure the sleeper. Hold at a predetermined height, then attach an anchor plate to the lower end of the holding bolt, then drive the roadbed concrete between the sleepers and the roadbed, and when the roadbed concrete hardens, Installation of a direct connection sleeper, characterized in that the holding bolt is pulled out, the anchor bolt is then inserted, the screw is screwed into the screw hole of the anchor plate, and then the fixing nut is screwed to the upper end of the anchor bolt. Method.