JPH0527722B2 - - Google Patents

Description

Detailed Description of the Invention (Industrial Field of Application) The present invention relates to a boarding and alighting assembly for a railway station that can be used to raise the height of the boarding and alighting platform without destroying the conventional boarding and alighting area at a railway station. It is related to construction methods.

(Prior art) Some of the boarding and alighting areas at railway stations have a height that is extremely lower than the height of the boarding and alighting areas of the current vehicles that stop there. It is difficult for people to get on and off the train, which poses a safety issue.

There would be fewer problems if a boarding and alighting area could be installed on top of a conventionally used boarding and alighting area, but this is practically impossible for the following reasons.

Figure 4 shows a boarding area constructed using the conventional retaining wall construction method.

An embankment 22 is formed between retaining walls 18, 18 in which foundations 19, 19 are arranged in parallel at a predetermined distance in a roadbed 21.
Then, crushed stone or the like 20 is laid on the embankment 22 to form a platform. Note that 23 is a rail.

However, if one attempts to increase the height of the boarding and alighting area by using such a boarding and alighting area as it is, as shown in FIG.
81 and 201 may be added to raise the height of the upper surface of the retaining wall.

However, the lifting height of this type of landing area is usually 34 cm or more, and the conventional retaining wall 18 only needs to withstand the earth pressure in the direction of the arrow a in Figure 5 before lifting. However, after the lifting, the earth pressure shown as b is added, so the retaining wall 1
A force that pushes 8 in the direction of the arrow acts, which is extremely dangerous.

Therefore, the current situation is that the retaining wall 18 and foundation 19 are removed and new construction is being carried out.

(Problems to be solved by the invention) In view of the above-mentioned current situation, the present invention does not remove the conventional boarding and alighting area, but uses it as it is,
The purpose of this invention is to provide an assembly construction method that can easily lift up a landing area, which can be constructed manually rather than mechanically.

(Means for Solving the Problems) The present invention is based on a landing area having, on at least one side, a retaining wall whose lower part is embedded in the roadbed.

The lower surface of one side of the capstone is fixedly arranged on the upper surface of the retaining wall via a beam so that the capstone remains horizontal.

The lower surface of the other side of the capstone is fixedly supported by a capstone receiving block whose lower part is embedded in the landing area. When embankment or crushed stones are laid on the top surface of the landing area on the other side of the capstone and the capstone receiving block so that it is at the same height as the top surface of the capstone, the horizontal and vertical lines of force acting on the capstone receiving block are at least the same as those of the retaining wall. The specifications of the capstone and capstone receiving block, such as the shape, weight, and depth of embedding of the capstone receiving block, are set so as to point toward the part embedded in the roadbed.

(Example) The present invention will be explained according to the example shown in FIGS. 1 to 2b.

Reference numeral 1 denotes a retaining wall in which a lower foundation 3 and a part 2 above it are embedded in the roadbed 5. In this embodiment, the retaining walls 1 and 1 are erected with a predetermined interval apart, and there is no space between them. An embankment 6 is placed, and crushed stone, for example, is laid above the embankment 6. Note that 17 is a rail. The retaining walls 1, 1 and the embankment 6 constitute a conventional low-height landing area.

The height of this conventional boarding area can be raised in the following manner.

The lower surfaces of one side of capstones 9, 9 are fixed to the upper surfaces of retaining walls 1, 1 via narrow H-beams 7, symmetrically about the longitudinal axis of a conventional boarding and alighting area. 8 is an anchor bolt for fixing the H-shaped steel 7 to the upper surface 4 of the retaining wall 1, and 81 is an anchor bolt for fixing the lower surface of the 1 side of the capstone 9 to the H-shaped steel 7. In this embodiment, the capstone 9 is made up of a unit capstone 91, and the H-beam 7 is made up of unit H-beams 71 that are continuously arranged and fixed. As a method of fixing the capstone 9 and the H-shaped steel 7 with the anchor bolts 81, a method as shown in FIG. 2a can be used.

A bolt hole 82 with a large internal diameter in the vertical direction is formed on one side of the capstone 9, and a bolt hole 83 with a small diameter that overlaps the bolt hole 82 is formed in an opposing portion of the H-beam 7. A bolt 81 having a protrusion 84 formed on the outer periphery of a predetermined portion of the tip is inserted into the bolt hole 82 from the direction of the tip. Since the outer circumference of the protrusion 84 is set larger than the inner diameter of the bolt hole 83, the bolt 81 is inserted into the protrusion 8.
4 stops at the position where it touches the upper surface of the bolt hole 83. In this state, the tip of the bolt 81 protrudes downward from the bolt hole 83 by a predetermined amount. A nut 85 is screwed into the protrusion to fix the bolt 81.
In this state, mortar, for example, is poured into the large bolt hole 82 and solidified. The fixing on the left side of FIG. 2a is done in the same way.

The lower surface of the other side of the capstones 9, 9 is connected to the upper surface of a capstone receiving block 10 whose lower part is embedded in the upper part of the conventional platform 6, and by the steel rod 100, about the longitudinal axis of the conventional platform. fixed symmetrically. The capstone 9 and the capstone receiving block 10 can be fixed by a steel rod 100, for example, by a method as shown in FIG. 2b.

Large diameter holes 111 and 112 are formed that pass through the opposite end of the capstone 9 and the capstone receiving block 10,
After filling the large-diameter bolt hole 112 up to a predetermined height with mortar 113 or the like and inserting the steel rod 100 into the upper space of the large-diameter hole 111 and the large-diameter hole 112, the inserted steel rod 100 and the large-diameter hole Mortar is embedded in the spaces above 111 and 112. The fixing of the H-shaped steel 7 and the upper surface of the retaining wall 1 in Fig. 2a is the conventional retaining wall 1.
This can be done by drilling a hole in the top of the hole and inserting an anchor bolt. Kasaishi block 1
0 becomes thicker as it goes downward. In this state, the upper surfaces of the capstones 9, 9 are on a horizontal plane that is approximately parallel to the upper surface of the conventional boarding area. An embankment 12 is placed on the conventional boarding area between the capstones 9, 9 and capstone receiving blocks 10, 10, crushed stones 13 are laid on the embankment 12, and asphalt pavement 14 is laid on top of the embankment 12, if necessary. Note that 15 is a warning block for the blind.

In this way, it is possible to construct a boarding and alighting area whose surface is lifted up by an amount h compared to the conventional boarding and alighting area. In this case, when the embankment 12 is placed on the conventional landing area between the capstones 9, 9 and the capstone receiving blocks 10, 10, the horizontal and vertical force lines 16 given to the capstone receiving block 10 are
is oriented at least to the part of the retaining wall 1 embedded in the trackbed 5, that is, the capstones 9, 9.
and the shape and weight of the capstone receiving blocks 10, 10,
The depth of embedding the capstone receiving blocks 10, 10 in the conventional boarding and alighting area, etc. are set.

Therefore, the earth pressure of the lifted landing area is applied to the retaining wall part embedded in the roadbed 5 as a horizontal and vertical component of the capstone support block 10 embedded in the landing area before being lifted up. , since the area surrounded by the upper surface of the landing area, the beam 7, the capstone receiving block 10, and the capstone 9 before being lifted up is empty, the retaining wall 1 exposed on the roadbed 5 has a third As shown in the figure, the earth pressure a of the landing area before being lifted up, a slight earth pressure of the landing area after being lifted up, and the vertical force of the lifted landing area are given. And the above vertical force is the basic 3
Therefore, the portion of the retaining wall 1 exposed on the roadbed 5 is only subjected to earth pressure approximately equal to the level before being lifted up, and no strength weaknesses occur.

(Effects of the Invention) The main effects of the present invention are as follows.

(1) According to the present invention, the existing boarding and alighting area is used as it is to raise the boarding and alighting area. Therefore, as in the past, the conventional boarding and alighting area is demolished from its foundation and a new boarding and alighting area is raised there. Since there is no need to install a boarding system, the time, labor and cost required for boarding and alighting can be significantly reduced compared to conventional systems.

(2) Moreover, during the lifting work, the capstone and capstone receiving block are fixed to the retaining wall via a beam as if they were one unit.
It is extremely simple, as all you need to do is fill it up with earth, spread crushed stones, etc.

(3) In addition, since the load on the lifted landing area is mainly borne by the cap stone support block, which is partly embedded in the conventional landing area, and the retaining wall part, which is embedded in the roadbed, details are given in Figure 3. Thus, it is possible to provide a highly safe landing platform that can sufficiently withstand loads and has no weak points in strength.

[Brief explanation of drawings]

Fig. 1 is a perspective view showing the overall configuration of the present invention;
Figure a is a partial cross-sectional side view showing an example of a method of fixing the lower surface of one side of the capstone and the upper surface of the H-section steel in Figure 1, and Figure 2b is a side view of the lower surface of the other side of the capstone and the lower surface of the capstone receiving block in Figure 1. A partial cross-sectional side view showing an example of a method of fixing to the opposite surface, FIG. 3 is a side view for explaining the effects of the present invention, and FIG. 4 is a side view for explaining the construction method of the landing area using the conventional retaining wall method. Side view for, 5th
This figure is a side view for explaining one construction method that can be considered when lifting the boarding area using the retaining wall construction method of FIG. 4, and the drawbacks in that case. 1... Retaining wall, 5... Roadbed, 6... Boarding area, 7...
...beam, 9...capstone, 10...capstone receiving block, 12...embankment, 13...crushed stone, 16...horizontal and vertical force lines acting on the capstone receiving block.

Claims (1)

[Claims] 1. In a boarding area that has a retaining wall whose lower part is embedded in the roadbed on at least one side, the lower surface of the first side of the capstone is fixed to the top surface of the retaining wall via a beam so that the capstone remains horizontal. , fix and support the lower surface of the other side of the capstone with a capstone receiving block whose lower part is embedded in the boarding area, and lay embankment or crushed stones on the upper surface of the boarding area on the other side of the capstone and the capstone receiving block. The shape, weight, A method of assembling a platform for boarding and alighting at a train stop, characterized by setting specifications such as the depth of embedding of a capstone receiving block.