JP2009121143A - Platform forming body and platform setting method - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To implement a platform forming body which allows adjustment of a separated distanced between a platform and a train and adjustment of a height when maintenance is conducted after setting of a precast block that constitutes the platform, and enables to carry out work that minimizes an influence on scheduling of trains and on the convenience of passengers on the platform when the precast block is set for repairing the platform, and to implement a platform repairing method. <P>SOLUTION: The plurality of concrete platform forming bodies 100 constitute the platform for trains etc. , by being aligned with each other on an installation area that is formed into a certain shape beforehand and leveled. Each platform forming body 100 is formed of a hollow body 10 having an almost U-shaped cross-sectional shape, a top board 31 covering an upper surface of the main body 10, an exchangeable height adjusting means 20 set between the main body 10 and the top board 31, and a separation adjusting means 40 for adjusting the location of the top board 31 along the upper surface of the main body 10, and fixing the top board 31 to the main body 10. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

  The present invention relates to a concrete precast block that forms a platform of a station by aligning a plurality thereof.

The station platform may swell and step on the platform surface due to erosion and subsidence due to wind and rain with many years of use, and if the column is tilted, leaving it as it is may cause trouble in train operation. . Therefore, the inspection is continued, and when the deformation is seen, the swell and the step are eliminated by repairing or replacing the member.
In particular, in the case of a structure called a girder type or half-girder type that supports the platform with steel columns or beams, the single foundation that supports the column is relatively small and the ground contact area with the ground is small. In many cases, it is necessary to change the foundation structure to a pile foundation or strengthen the foundation ground, stop the energization of the overhead line, stop the power transmission, and temporarily transfer the facilities that hinder the construction to another place It will be a long-term construction using large heavy machinery with relocation work, which will require a lot of construction time and cost.

  Therefore, in recent years, a method for constructing a platform has been proposed by using a concrete precast block that has been pre-molded in the shape of the platform, without performing concrete placement for constructing the girder on the site or the landing itself ( For example, refer to Non-Patent Document 1), which has been effective in reducing trouble transfer work and construction using large heavy machinery, and the construction method is widely applied and generalized.

In addition, the front end of the platform closest to the train is pre-formed with concrete, and it is fixed after sliding on the platform that will serve as the foundation of the platform, thereby closing the track per work during construction. A method for minimizing the time is also proposed (see, for example, Patent Document 1).
Kakon Corporation homepage, "TOP page >> Products and construction method TOP >> Special construction method >> Precast platform >> Precast platform C type" [online], Kaycon Corporation, [searched August 21, 2007], Internet <URL: http://www.kcon.co.jp/items/2006/01/post_47.html#jump02><URL: http://www.kcon.co.jp/items/images/pdf/itemto_04. pdf> JP-A-8-68015

  However, on a platform using a precast block, if minor repairs after installation (hereinafter referred to as maintenance) are required, it is not easy to adjust the distance between the platform and the train or to adjust the height. was there.

  Moreover, even if the precast block is used, it is not sufficient to complete all the construction only when the passenger train is not operated at night or the like, and the construction may extend to the next day or later. In such a case, it is conceivable to temporarily fix the precast block, temporarily use it for business in the daytime, and restart the construction when it is not operating at night again to reduce troubles in operation. However, in the conventional method, it is necessary to perform paving work on the home surface and sticking the visually impaired person guidance block at the final stage after installing the precast block, and the installation of the visually impaired person guidance block has not been completed. However, since the use of the platform for business is not permitted, the temporary construction of the daytime platform cannot be used in the conventional construction method described above when the construction extends to the next day or later, and part of the platform becomes unusable during that time. There was a problem of falling into an unfavorable situation.

  An object of the present invention is to facilitate adjustment of the distance and height after installation of a precast platform, and to suppress the influence on train operation and customer's home use as much as possible when the precast platform is installed.

In order to solve the above problems, the invention described in claim 1
It is a concrete landing site structure that forms a landing site such as a train by arranging a plurality of pieces on an installation surface that is formed in a certain shape in advance and leveled,
A hollow body having a substantially U-shaped cross-sectional shape;
A top plate covering the upper surface of the main body;
Replaceable height adjusting means installed between the main body and the top plate,
There is provided a distance adjusting means for adjusting the position of the top plate along the upper surface of the main body and fixing the top plate to the main body.

The invention according to claim 2 is the landing structure according to claim 1,
An elastic body plate and a visually impaired person guidance block are affixed to the upper surface of the top plate.

Invention of Claim 3 is a boarding / alighting structure as described in any one of Claim 1 or 2,
A plurality of top plates are provided per main body, and a plurality of top plates are arranged adjacent to each other to cover the top surface of the main body.

The invention according to claim 4 is the landing structure according to any one of claims 1 to 3,
Level adjustment means that enables height adjustment and level adjustment in a state of being placed on the installation surface by floating the bottom surface of the main body from the installation surface,
The bottom of the main body has a grout injection hole for injecting a grout from a hollow inner space of the main body toward a gap between the bottom surface and the installation surface.

The invention according to claim 5 is the landing structure according to any one of claims 1 to 4,
In order to align with other adjacent landing structures when aligning a plurality, a convex portion is provided on one side surface of the main body, and a concave portion having a shape that fits the convex portion is provided on the other side surface. It is characterized by having.

The invention described in claim 6 is the landing structure according to claim 5,
The convex portion protrudes more than the concave amount of the concave portion.

The invention according to claim 7 is the landing structure according to claim 4,
Bolt connection means for connecting to the other landing / entry structure is provided on each of both side surfaces of the main body that are in contact with another adjacent landing / entry structure.

The invention according to claim 8 is the landing structure according to any one of claims 1 to 7,
A plurality of hook attachment holes for attaching a hook for supporting geotextiles embedded in the back of the main body for soil reinforcement measures are provided on the back of the main body.

The invention according to claim 9 is a landing site installation method for installing a landing site using the landing site structure according to claim 7,
A main body installation step of arranging a plurality of the main bodies side by side;
A level adjustment step for adjusting the height and level of each of the installed main bodies by the level adjustment means;
A main body connecting step of connecting each of the main bodies after height adjustment and level adjustment by the bolt connecting means;
A grout injection step of injecting grout from the grout injection hole to each main body after height adjustment and level adjustment,
A height adjusting means arranging step of arranging the height adjusting means on each of the main bodies;
And a top plate separating arrangement step of arranging the top plate on each of the height adjusting means.

According to the first aspect of the present invention, since the height adjusting means installed between the main body and the top plate can be exchanged, even if the ground is floated or lowered after fixing the landing structure, the thickness can be easily adjusted. It becomes possible to exchange with different height adjusting means, and future maintenance can be performed efficiently.
In addition, since the platform height is relatively determined by the relationship with the rail height, it is not limited to the case where the ground of the landing structure is raised or lowered. If the rail is lifted by a work called a rail track using a track maintenance work vehicle such as a multiple tie tamper, it can be handled by replacing the height adjustment means. Can be performed efficiently.
In addition, since the cross-sectional shape of the main body is substantially U-shaped and hollow, it is configured so that many operations when installing the landing structure can be performed from the hollow inner space without hindering the building limit. It is also possible. Furthermore, it is possible to proceed with the work inside the hollow inner space and the outside in parallel, so that the work can be performed more efficiently and the construction period can be shortened. In addition, after installation, the hollow inner space can be used as a shelter for passengers who have fallen on the railroad, and during the winter season, snow that has fallen on the railroad or platform is temporarily accumulated. Can be used as a place to make. Note that “substantially U-shaped” includes “substantially U-shaped” in the sense that the cross-sectional shape provides the above-described effects.
In addition, it is possible to easily adjust the distance between the platform and the train because it is equipped with a distance adjustment means that makes it easy to adjust and fix the position of the top board. The construction period can be shortened, and after installation, it will not interfere with the building limits when it is passed by multiple tie tampers (work to correct the unevenness of the rail side surface along the length of the rail). The maintenance of the distance between the platform and the train required for the vehicle can be performed efficiently.

According to the second aspect of the present invention, the boarding / alighting structure is provided with a top plate on which an elastic plate and a visually impaired person guidance block are attached in advance, so that the passenger train is not operated at night or the like. Even if platform renovation work is not completed, it is not necessary to perform paving work on the home surface and pasting blocks for visually impaired people in the final stage after installing the precast blocks required by conventional methods. Can be temporarily used for business, avoiding situations that affect train operations and situations where some of the platforms used by customers become unusable.
In addition, since the elastic body plate and the visually impaired guidance block are affixed to the top plate in advance, it can be attached to the main body as it is. The construction period can be shortened compared with the case where the block for guiding the visually impaired is applied on site.

According to the third aspect of the invention, since the top plate disposed on the upper surface of the main body is divided into a plurality of parts, the top plate can be reduced to a weight that can be easily lifted by human power. The work period can be shortened.
In addition, when installing a platform in a loose curve section with a relatively large curve radius, it is only necessary to arrange a plurality of top plates according to the curve without arranging the position of the landing structure according to the curve section. Since it is possible to correspond to a curved section, the work can be efficiently performed and the construction period can be shortened.

According to the invention described in claim 4, since the landing structure includes level adjusting means and a grout injection hole, when the landing structure is installed, height adjustment and level adjustment are performed and fixed by the grout. Therefore, it is difficult to perform fine adjustment by moving the precast block for height adjustment and level adjustment, so that time-consuming work is unnecessary, and the work can be efficiently performed and the work period can be shortened.
In addition, since the cross-sectional shape of the main body is substantially U-shaped and hollow, the height adjustment and level adjustment can be adjusted from the hollow inner space by configuring the level adjustment means to be adjustable from the hollow inner space. It is possible, and grout injection work can be performed from the hollow inner space without hindering the construction limit. Further, it is possible to configure the work relating to the adjustment of the separation distance, the height adjustment and the level adjustment, and the grout injection so that the work can be performed in the hollow inner space, and the work can be efficiently performed in the hollow inner space.
In addition, grout means the material inject | poured for the purpose of ground reinforcement, and generally cement milk, mortar, and a synthetic resin are used.

  According to the invention described in claim 5, since the landing structure has a convex portion on one side surface of the main body and has a concave portion that fits the convex portion on the other side surface, When aligning a plurality of vehicles, it becomes easy to align with other adjacent landing hall structures, and the work can be efficiently performed and the construction period can be shortened.

  According to the invention described in claim 6, since the protruding amount of the convex portion included in the landing structure is formed to be slightly larger than the concave amount of the concave portion, another adjacent landing field configuration is provided. Since there is room between the body and the platform can be installed in a curved section, it is easy to align multiple landing sites according to the curved section, enabling efficient work and shortening the construction period. .

According to the seventh aspect of the present invention, since the boarding area structure is connected to another adjacent boarding area structure by the bolt connecting means, there is a slight shift in the position of the adjacent boarding area structure at the time of installation. Since it is possible to easily connect even when there is a problem, the work can be performed efficiently and the construction period can be shortened.
Moreover, since the cross-sectional shape of the main body is substantially U-shaped and hollow, it is possible to connect the bolt coupling means from the hollow inner space, thereby reducing the construction limit of the bolt coupling from the hollow inner space. It can be done without any problem. In addition, it is possible to perform operations related to adjustment of separation distance, height adjustment and level adjustment, grout injection, bolt connection so as to work in a hollow inner space, and work efficiently in a hollow inner space. .

According to the eighth aspect of the present invention, the landing structure is provided with a plurality of hook attachment holes for attaching the hooks for supporting the geotextile embedded for soil reinforcement measures on the back surface, so that the geotextile can be locked to bend. Since it is possible to prevent misalignment, work can be performed efficiently and the construction period can be shortened.
Geotextile is a term coined by combining Geo-, meaning “land” or “land” in English, and Textile, “textile”, and is a general term for “stable civil engineering (use) stable fiber materials”. By embedding geotextile in the soil according to a predetermined usage, it is possible to reinforce the tensile force and shearing force of the soil, and to improve the stability of the entire soil structure.

  According to the invention described in claim 9, the installation work of the platform is stopped for the work using a large work machine such as concrete placing and foundation pile placing for constructing the on-site landing site itself. Main body installation process, level adjustment process, main body connection process, grout injection process, height adjustment means arrangement process, top plate separation arrangement The platform height and level can be adjusted easily, and the distance between the platform and the train can be easily adjusted. , Construction that minimizes the impact on train operation and customers' home use.

  Hereinafter, embodiments of the present invention will be described with reference to FIGS.

(Configuration of boarding and landing structures)
As shown in FIGS. 1 and 2, the landing structure 100 is composed of a precast block 10 as a “main body”, a rubber sheet 20 as a “height adjusting means” laid on the upper surface 10 a of the precast block 10, Two top plates 31 and 31 made of precast concrete covering the entire upper surface 10a of the precast block 10, a distance adjusting means 40 for adjusting the position of the top plate 31 and fixing it to the precast block 10, and a precast block Level adjustment means 50 that enables height adjustment and level adjustment while being placed on the installation surface B on which 10 is installed, and a gap between the hollow inner space 10f of the precast block 10 and the bottom surface 10b and the installation surface B A grouting hole 15 for injecting grouting toward the surface, and a convex portion 1 on one side surface 10d of the precast block 10 And a recess 12 shaped to fit the protrusion 11 on the other side surface 10e, a bolt connecting means 60 for connecting to another adjacent precast block 10, and a geotextile embedded for soil reinforcement measures on the back surface 10c. And a hook attachment hole 14 for attaching a hook F for supporting G. A rubber chip plate 32 as an “elastic body plate” and a visually impaired person guiding block 33 are attached to the top surface of each top plate 31.

As shown in FIG. 2, the precast block 10 is a concrete block having a substantially U-shaped cross-sectional shape, and a position adjustment fixing hole 41 in which each member of the separation adjusting means 40 is accommodated is opened on the upper surface 10a. It has been. The position adjustment fixing hole 41 is opened so that the upper surface 10a side is small (for example, 50 mm × 50 mm) and the inner space 10f side is large (for example, 120 mm × 120 mm). In order to support a plate 44 (for example, 110 mm × 90 mm) for fixing, a step 41a is provided.
Further, the front surface of the precast block 10 has a large opening, but a flip-up portion that is somewhat raised as a ballast stop is formed in the vicinity of the bottom of the front surface, so that ballast and earth and sand flow into the inner space 10f. prevent.
In addition, the precast block 10 can be manufactured in a lump in a concrete factory or the like, and various conditions such as temperature and humidity can be kept in an optimal state for drying concrete during the manufacture. Therefore, compared to the case where concrete is placed on site to construct the landing itself, not only can the time for providing the formwork and the time for drying the concrete be greatly reduced, but also maintaining a stable and high quality. There are advantages such as being able to.
When installing on a soft ground, it is effective to use a precast block having a substantially U-shaped cross section instead of the precast block 10 having a substantially U-shaped cross section.

As shown in FIG. 3, the separation adjusting means 40 includes a position adjustment fixing hole 41, bolts 43 (for example, 16 mm in diameter) threaded to both ends for passing the position adjustment fixing hole 41, and a top plate 31 and the insert 42 into which the bolt 43 is screwed, and the position adjustment fixing hole 41 can be slid within the step 41a smaller than the middle step 41a, and the bolt 43 moves back and forth with a margin. And a plate 44 (see FIG. 4A) having a long hole portion 44a (for example, 60 mm × 19 mm), a washer 45 and a double nut 46 that support the plate 44.
In a state where the rubber sheet 20 and the top plate 31 are positioned to some extent on the upper surface 10a of the precast block 10, a bolt 43 is passed through the position adjustment fixing hole 41 and one end thereof is screwed into the insert 42, and the plate 44 Is inserted to the step 41a while passing the bolt 43 through the long hole 44a, and the bolt 43 is lightly tightened with the washer 45 and the double nut 46, whereby the top plate 31 is d1 (for example, 34 mm) along the long hole 44a. Can be slid only (see FIG. 4B). Then, the top plate 31 can be easily fixed by further tightening the double nut 46 after adjusting the position. The plate 44 may be slidable in a direction perpendicular to d1 by setting the plate 44 small.

The rubber sheet 20 is a thin sheet (for example, 3 mm in thickness) having substantially the same shape (for example, 1 m × 1 m) as the upper surface 10 a of the precast block 10, and the same position and the same as the position adjustment fixing hole 41 of the upper surface 10 a. The shape is cut out and does not hinder the movement of the bolt 43 in the position adjustment described above.
Further, since the rubber sheet 20 is fixed together when the top plate 31 is fixed by the separation adjusting means 40 without using an adhesive or the like, it can be easily removed by loosening the separation adjusting means 40. Yes, when the ground floats and sinks after the landing structure 100 is fixed, it can be easily replaced with rubber sheets having different thicknesses.
The rubber sheet 20 may be divided into a plurality of pieces according to the shape of the top plate 31. By dividing into a plurality, it becomes possible to exchange one rubber sheet every time one top plate 31 is removed, and the rubber sheet can be exchanged more flexibly.
The rubber sheet 20 may have any shape instead of the rubber sheet 20 having substantially the same shape as the upper surface 10a of the precast block 10 as long as the gap can be maintained. , wood, synthetic resin or the like, may be used sheet plates of any material, including an elastic and non-elastic material.

The upper surface 10 a of the precast block 10 can be entirely covered with two top plates 31. As shown in FIG. 9, since the rubber chip plate 32 and the visually impaired person guidance block 33 are affixed to the top surface of the top plate 31 in advance, the renovation work of the platform can be performed when the passenger train is not operating at night or the like. Even if it is not completed, it can be temporarily used for business in the daytime.
Moreover, since it was set as the structure which covers the upper surface 10a of the one precast block 10 with the two top plates 31, it is possible to make the weight of the top plate 31 light and easy to handle, and the weight which can be lifted by human power, Work efficiency can be improved.
In addition, it is good also as a structure which covers the upper surface 10a of one precast block 10 with one top plate. In that case, it is possible to adjust the separation distance of the top plate for one precast block 10 at a time. In addition, it is good also as a structure which covers the upper surface 10a of the one precast block 10 with many more top boards. In that case, the number of top plates can be adjusted to spread the top plates without any gaps.
The top plate 31 may be made of any material such as metal, wood, or synthetic resin.
Instead of the rubber chip plate 32, a plate made of wood, metal, concrete, synthetic resin or the like may be used.

Further, the precast block 10 has height adjustment hole portions that are adjustable in height by inserting hexagon bolts 52 (for example, a diameter of 20 mm) in which nut-shaped metal fitting with the hexagon bolts 52 is embedded in the four corners of the bottom portion. 51 and a grout injection hole portion 15 (for example, a diameter of 50 mm) for injecting grout from the inner space 10f toward the gap between the bottom surface 10b and the installation surface B. The grout injection hole portion 15 is provided at substantially the center of the bottom surface 10b so that the grout to be injected spreads evenly over the entire bottom surface 10b.
In order to avoid the grout injected into the gap between the bottom surface 10b and the installation surface B from flowing out, a packing or the like surrounding a necessary region of the gap between the bottom surface 10b and the installation surface B may be used. When leveling concrete is placed for ground reinforcement, the grout may be prevented from flowing out by forming the leveling concrete in a concave shape.
Here, the leveled concrete refers to concrete with relatively low strength for spreading before leveling the structure so that the main body structure can be accurately built.

As shown in FIG. 5, the level adjustment means 50 includes a height adjustment hole 51, a hex bolt 52, and a metal plate 53 that is disposed on the installation surface B and receives a load applied by the hex bolt 52.
What is necessary is just to arrange | position the metal plate 53 just before installing the precast block 10 in the installation surface B in four positions where the hexagon bolt 52 will be contact | abutted when the precast block 10 is installed in the installation surface B. At this time, the metal plate 53 does not need to be particularly fixed. Thereafter, the precast block 10 is installed on the installation surface B, and the hexagon bolt 52 is rotated as necessary to project the tip of the hexagon bolt 52 from the bottom surface 10b, thereby adjusting the height and level of the precast block 10. Similarly, the height adjustment and the level adjustment are completed by injecting grout from the grout injection hole portions 15 from the inner space 10f after the height adjustment and the level adjustment are similarly completed for the other adjacent precast blocks 10 as well.
In addition, the head of the hexagon bolt 52 protruding to the inner space 10f side may be cut so as to be accommodated in the height adjustment hole 51 for safety, and grout may be poured into the height adjustment hole 51 to fill it.

Further, as shown in FIG. 2, the precast block 10 has a convex portion 11 on the side surface 10d and a concave portion 12 shaped to fit the convex portion 11 on the other side surface 10e. The bolt connection means 60 for connecting with the precast block 10 is provided in four places on both sides.
In addition, as long as it is unified in all the precast blocks 10, the convex part 11 may be provided in the side surface 10e and the concave part 12 may be provided in the side surface 10d contrary to the above.

As shown in FIG. 6, the convex portion 11 and the concave portion 12 have a trapezoidal cross section when viewed from the upper surface 10 a side of the precast block 10. For example, by disposing the concave portion 12 of the precast block 10 to be arranged next to the convex portion 11 of the precast block 10 that has already been arranged, the front and rear displacement of the precast block 10 is arranged. Is suppressed, positioning becomes easy, and work can be performed efficiently.
The protruding amount of the convex portion 11 (for example, 17 mm) is slightly larger (for example, 2 mm) than the concave amount of the concave portion 12 (for example, 15 mm), and is natural when the precast block 10 is closely contacted and aligned. You may make it make a curve. For example, when the precast block 10 having a protrusion 11 having a protrusion 2 mm larger than the recess 12 and having an upper surface 10a of 1 m × 1 m is brought into close contact with each other and aligned, the platform is set outside a curve section having a curve radius of about 500 m. Make a curve just right in case. Naturally, when a platform is installed in a straight section, a gap is generated between the precast blocks 10, so that the gap may be filled by packing material 70 as necessary.
However, even if the precast block 10 is not arranged in a curved shape, it is possible to deal with a certain degree of curved section by adjusting the top plate 31 by the distance adjusting means 40.

As shown in FIG. 7, the bolt connecting means 60 includes a connecting recess 61, a bolt 62, a nut 63, a washer 64, and a long hole portion 65. The connecting recess 61 is wide open toward the inner space 10f side, has a shape that facilitates the operation of inserting the bolt 62 and tightening the nut 63, and is adjacent to the side surface 10d (or side surface 10e) side. Even if the two precast blocks 10 are slightly displaced, the shape has a long hole portion 65 that allows a bolt 62 to pass therethrough. The bolt 62, the nut 63, and the washer 64 are generally used, and can be fastened with a spanner, a ratchet, or the like from the inner space 10f side.
Since the hole through which the bolt 62 penetrates has a high risk of breakage of the concrete when fastened, a metal plate having the same shape as the hole is embedded when the precast block 10 is manufactured, or the connecting recess is connected at the time of connection. It is desirable that a similar metal plate is sandwiched or pasted between 61 and the washer 64.

Furthermore, the precast block 10 has two hook attachment holes 14 for attaching a geotextile G supporting hook F to be embedded for soil reinforcement measures on the back surface 10c on the back surface 10c, separated by 500 mm horizontally, and separated by 300 mm vertically. There are four rows, a total of eight. When embedding geotextile G such as geogrid as a countermeasure for soil reinforcement on the back side, screw the hook F into the hook mounting hole 14, hang the geotextile G on the hook F, lay the soil on top of it. By repeating the compaction several times to obtain the structure as shown in FIG. 8, the geotextile G is locked at this time, and there is an effect of preventing twisting and misalignment.
The hook mounting hole 14 is embedded in advance when the precast block 10 is manufactured, and any material may be used as long as the hook F can be mounted, such as metal or resin.

(Platform repair method, etc.)
When major repairs beyond the repair and replacement of mere components are required due to the subsidence of a single foundation of a girder or half-girder platform, or when a new landing is set up, The construction for installing the precast block 10 is performed by the “depot setting method”.

First, when refurbishing girder or half girder platforms that have been installed up to that point, dismantle and remove the parts that require rehabilitation.
After that, if the ground is soft and needs reinforcement, the ground is dug up to the required depth, and there is a process to reinforce the ground using a pile foundation, a topping foundation, an RRR construction method, and other generally known construction methods. Also good. At that time, earth retaining plates by sheet piles may be provided so that the track bed of the track does not collapse.
In addition, after the removal of the existing landings or the completion of the step of reinforcing the ground, when the ground is uneven, the leveling concrete is placed to prepare the installation surface B on which the precast block 10 is installed. There may be a process or a process of leveling with sand.
Moreover, when newly installing a boarding / alighting hall, work other than the removal of the above-mentioned existing boarding / alighting hall is performed as needed.

Next, the following procedure is performed as the “main body installation step”.
The metal plate 53 is arrange | positioned in four places which the hexagon bolt 52 is considered to contact | abut, and the precast block 10 is installed on it. Subsequently, a necessary number of precast blocks 10 are arranged side by side so as to be fitted to the convex portion 11 or the concave portion 12 of the precast block 10 previously installed.

Next, the following procedure is performed as a “level adjustment step”.
For each precast block 10 installed, height adjustment and level adjustment are performed by the level adjustment means 50. At that time, the thickness is adjusted in consideration of the thickness of the top plate 31, the rubber sheet 20, the rubber chip plate 32, the visually impaired person guiding block 33, and the like. Further, since the hexagon bolts 52 of the adjusted level adjusting means 50 are dangerous when the inner space 10f is used as a refuge place for passengers or the like who have fallen on the track as it is, the height adjusting hole 51 It is desirable to cut it to a length that does not protrude from it and fill it with pouring grout.
These operations are performed from the inner space 10 f of the precast block 10.

Next, the following procedure is performed as the “main body connecting step”.
After the height adjustment and the level adjustment, as shown in FIG. 7, the bolt connection means 60, 60 facing the adjacent precast blocks 10, 10 have the long hole portions 65, 65 at substantially the same position. Bolts 62 through which washers 64 are passed from one connection recess 61 are inserted into the long holes 65 and 65 facing each other, and the nut 63 is tightened through the washer 64 in the other connection recess 61. This is done for all facing bolt coupling means 60,60.
These operations are performed from the inner space 10 f of the precast block 10.

Next, the following procedure is performed as a “grouting step”.
Grout is injected into the precast blocks 10 connected by the bolt connecting means 60 from the grout injection hole 15. At this time, grout may be poured together with the above-described height adjustment hole 51.
These operations are performed from the inner space 10 f of the precast block 10.

Here, in the case of renovation of the existing platform, an operation of filling the gap between the back surface 10c of the precast block 10 and the existing platform with earth and sand is performed. At that time, in order to reinforce the soil, the earth and sand are compacted when the earth and sand are filled with about 300 mm, a geotextile G such as a geogrid is laid, and the hook F attached to the hook attachment hole 14 on the back surface 10c of the precast block 10 is attached. Hook the geotextile G and repeat the same procedure every 300 mm to the same height as the precast block 10. However, there is a case where the backfilling operation is unnecessary, for example, when the back surface 10c of another precast block 10 is placed in close contact with the back surface 10c of the precast block 10.
Even when a new boarding area is installed, if it is necessary to fill the back surface 10c of the precast block 10 with earth and sand, the same operation as described above is performed.

Next, the following procedure is performed as the “height adjusting means arranging step”.
The rubber sheet 20 is arranged for each precast block 10 and aligned with the position adjustment fixing hole 41 and the like on the upper surface 10a.

Next, the following procedure is performed as a “top plate separation step”.
Two top plates 31 are prepared for one precast block 10, and they are arranged on a rubber sheet 20 laid on the precast block 10 while measuring a distance. When each top plate in the present invention has a size of about 500 mm × 1200 mm × 30 mm, it weighs about 50 kg, and can be arranged without using a work machine.
Two separation adjusting means 40 are attached to each top plate 31, and all the top plates 31 are fixed by tightening the double nut 46 from the inner space 10f.

After that, asphalt pavement on the soil on the back of the precast block 10, backfilling the roadbed on the track side, removing the sheet pile, restoring the surrounding girder or half girder platform, etc., as necessary, using the precast block 10 This completes the construction of the platform.
In this method, when the precast block 10 in the present invention has a size of about 1 m × 1 m × 1.5 m, the weight is about 1.3 t. Therefore, in the danger area of discharge (for example, within 1 m from the overhead line). If there is a small crane that can not enter, construction can be done, and compared with the case of using a large work machine, expenses such as lease fees and fuel costs are reduced to reduce costs, The construction period can be shortened without stopping the feeding.
Note that the main body connecting step and the grout injection step may be performed by changing the order as necessary, or may be performed simultaneously. Further, the height adjusting means arranging step may be performed anytime after the main body installing step and before the top plate separating step is started, or may be performed simultaneously with other steps.

On the other hand, in the maintenance after the precast block 10 is installed, the distance between the platform and the train and the height can be easily adjusted by performing the following work.
In order to adjust the separation distance, it is only necessary to loosen the double nut 46 from the inner space 10f. By loosening the double nut 46, the top plate 31 can be slid and the separation distance can be easily adjusted.
In order to adjust the height, first, all the separation adjusting means 40 including the double nut 46 are removed. Thereafter, the top plate 31 is once removed from the precast block 10 and the rubber sheet 20 is removed, added or exchanged, so that the height can be easily adjusted.
By adjusting the top plate 31 again by the separation adjusting means 40, the adjustment of the separation distance and the height adjustment are completed.

(Effects of boarding and landing structures)
Since the rubber seat 20 installed between the precast block 10 and the top plate 31 can be replaced by using the platform structure 100 in the present embodiment described above as a platform, the platform structure 100 can be replaced. Even if the ground floats or sinks due to consolidation due to fixation, it can be easily replaced with rubber sheets of different thicknesses, and future maintenance can be performed efficiently.
Not only when the ground of the landing structure 100 rises and falls, but also when the rail sinks due to daily train travel or when the rail is lifted on a railroad track such as a multiple tie tamper, It is possible to cope by exchanging the rubber sheet 20, and maintenance can be performed efficiently.
In addition, since the cross-sectional shape of the precast block 10 is substantially U-shaped and hollow, when installing the landing structure 100, adjustment of the distance between the platform and the train, height adjustment and level adjustment, grout injection work It is possible to perform the bolt connection operation and the like from the inner space 10f without hindering the construction limit. Furthermore, it is possible to proceed with the work in the inner space 10f and the outside, such as the adjustment of the distance between the platform and the train and the grout injection, and the work can be performed more efficiently and the construction period can be shortened. In addition, after installation, the internal space 10f can be used as a refuge for passengers who have fallen on the track by any chance, and in winter, a place to temporarily accumulate snow on the track and platform Can be used as
Further, since the distance adjusting means 40 that allows easy position adjustment and fixing of the top plate 31 is provided, it is possible to easily adjust the distance between the platform and the train, and at the time of installing the precast block 10 efficiently. The work period can be shortened by performing work, and after installation, it is possible to pass through multiple tie tampers etc. (work to correct the unevenness of the rail side surface that occurs along the length of the rail). Therefore, it is possible to efficiently perform maintenance of the distance between the platform and the train that is necessary for this purpose.
In addition, it is possible to perform operations related to adjustment of separation distance, height adjustment and level adjustment, grout injection, bolt connection so as to work in a hollow inner space, and work efficiently in a hollow inner space. .

In addition, the boarding and landing structure 100 includes a top plate 31 having a rubber chip plate 32 and a visually impaired person guidance block 33 attached in advance to the upper surface 10a, so that the renovation work of the platform when the passenger train is not operated at night or the like. Even if the process is not completed, it is not necessary to perform paving work on the home surface and pasting blocks for guiding the visually impaired at the final stage after installing the precast blocks required by the conventional method, and temporarily fixing the precast block 10 It is possible to use it temporarily for business during the daytime and resume construction when it is not operating at night again. This may affect the operation of trains, and some of the platforms used by customers will be unusable. This situation can be avoided.
Further, since the rubber chip plate 32 and the visually impaired person guiding block 33 are affixed to the top plate 31 in advance, it is possible to perform the work of attaching to the precast block 10 as it is. The construction period can be shortened as compared with the case where the sticking of the visually impaired person guiding block 33 is performed on site.

Moreover, since the top plate 31 arranged on the upper surface 10a of the precast block 10 is divided into two pieces, the weight is easy to handle so that it can be lifted by human power (for example, 50 kg). Can be shortened.
Further, when the platform is installed in a loose curve section having a relatively large curve radius, the two top plates 31 are only arranged in accordance with the curve without arranging the position of the precast block 10 in accordance with the curve section. Because it is possible to correspond to the curve section, it is possible to work efficiently and shorten the construction period.

  Further, since the precast block 10 includes the level adjusting means 50 and the grout injection hole 15, it is easy to perform height adjustment and level adjustment when installing the landing structure 100 and fix it by the grout. The difficult and time-consuming work of moving the precast block 10 for fine adjustment by adjusting the height and level is unnecessary, and the work can be efficiently performed and the work period can be shortened.

  Moreover, since the precast block 10 has the convex part 11 and the recessed part 12, when aligning two or more precast blocks 10, alignment with the other precast block 10 which adjoins becomes easy, works efficiently, and shortens a construction period. it can.

  Moreover, since the protrusion amount of the convex part 11 which the precast block 10 has is formed so that it may become slightly larger (for example, 2 mm) compared with the concave amount of the recessed part 12, it is between adjacent adjacent precast blocks 10. Therefore, even when the platform is installed in the curved section, it is easy to align the plurality of precast blocks 10 in accordance with the curved section, so that the work can be efficiently performed and the construction period can be shortened.

  In addition, since the precast block 10 is connected to the other adjacent precast block 10 by the bolt connecting means 60, it is easily connected even when there is a slight shift in the position of the adjacent landing structure at the time of installation. This makes it possible to work efficiently and shorten the construction period.

  Further, since the precast block 10 includes a hook attachment hole portion 14 for attaching a hook F for supporting the geotextile embedded as a soil reinforcement measure on the back surface 10c, the geotextile can be locked to prevent dripping and displacement. Therefore, work can be performed efficiently and the construction period can be shortened.

  In addition, the platform installation work is a precast that can reduce the electric power stoppage and trouble transfer work required for work using large work machines such as concrete placement and foundation pile placement to constitute the platform itself Use block 10 according to the landing installation method comprising a main body installation step, a level adjustment step, a main body connection step, a grout injection step, a height adjustment means arrangement step, and a top plate separation arrangement step. This makes it easy to adjust the height and level of the platform and easily adjust the distance between the platform and the train, so that work can be done efficiently and the construction period can be shortened. It is possible to perform construction with as little as possible.

(Other)
The platform structure 100 according to the present embodiment described above can be used not only for the renovation work of the platform but also for the new construction work of the station / platform, and the settlement of the ground due to the consolidation of the soil after fixing. In the case where the rubber sheet 20 is easily replaced with a thicker one, it is effective to perform future maintenance efficiently.

  In the present embodiment described above, the position adjustment fixing hole 41 has a square shape. However, if the position of the top plate 31 is adjustable, the position adjustment fixing hole 41 may be changed to a circular shape or other shapes together with the plate 44. I do not care. Similarly, the grout injection hole 15 is not limited to a circle, and the connecting recess 61 facing the side surface 10d (or the side surface 10e) may be changed to another shape as long as the washer 64 cannot be removed. Good.

  Of the above steps, the level adjustment step, the main body connection step, and the grout injection step always work from the inner space 10f, but usually the adjustment of the separation distance and the height of the top plate 31 that works from the upper surface 10a. The adjustment may also be performed from the internal space 10f depending on the situation.

It is a schematic diagram which shows the main components of the boarding / alighting structure in this invention. It is (a) top view, (b) front view, (c) right side view, (d) bottom view of the precast block in the present invention. It is a schematic diagram which shows the separation adjustment means of the boarding / alighting structure in this invention. It is explanatory drawing showing the movable range of (a) center position of the relationship between the position adjustment fixing hole part of a distance adjustment means in this invention, a plate, and a volt | bolt, and (b) bolt. It is a schematic diagram which shows the level adjustment means of the boarding / alighting structure in this invention. It is explanatory drawing which shows the state which the convex part and recessed part of a boarding / alighting body structure in this invention fit. It is explanatory drawing which shows the state in which the boarding / alighting structure in this invention is connected by the bolt connection means. It is explanatory drawing which shows the usage method of the hook attachment hole part of the boarding / alighting body structure in this invention. It is a top view of the top board of the boarding / alighting structure in this invention.

Explanation of symbols

10 Precast block (main unit)
10a upper surface 10b bottom surface 10c rear surface 10d side surface 10e side surface 10f inner space 11 convex portion 12 concave portion 14 hook mounting hole portion 15 grout injection hole portion 20 rubber sheet (height adjusting means)
31 Top plate 32 Rubber chip plate (elastic body plate)
33 Block for guiding visually impaired person 40 Distance adjusting means 41 Position adjusting fixing hole 41a Step 42 Insert 43 Bolt 44 Plate 44a Long hole 45 Washer 46 Double nut 50 Level adjusting means 60 Bolt connecting means 70 Packing material 100 Boarding / exiting structure B Installation surface F Hook G Geotextile

Claims (9)

It is a concrete landing site structure that forms a landing site such as a train by arranging a plurality of pieces on an installation surface that is formed in a certain shape in advance and leveled,
A hollow body having a substantially U-shaped cross-sectional shape;
A top plate covering the upper surface of the main body;
Replaceable height adjusting means installed between the main body and the top plate,
A boarding and landing structure comprising: a distance adjusting unit that adjusts a position of the top plate along an upper surface of the main body and allows the top plate to be fixed to the main body. The boarding / alighting structure according to claim 1,
A boarding and landing structure comprising an upper surface of the top plate and an elastic plate and a visually impaired person guidance block attached thereto. It is a boarding / alighting structure as described in any one of Claim 1 or 2,
A boarding hall structure comprising a plurality of the top plates per main body and covering the upper surface of the main body by arranging the plurality of top plates adjacent to each other. A landing structure according to any one of claims 1 to 3,
Level adjustment means that enables height adjustment and level adjustment in a state of being placed on the installation surface by floating the bottom surface of the main body from the installation surface,
A boarding / grounding hall structure having a grout injection hole portion for injecting grout from a hollow inner space of the main body toward a gap between a bottom surface and an installation surface in the bottom portion of the main body. It is a boarding / alighting structure as described in any one of Claim 1 to 4,
In order to align with other adjacent landing structures when aligning a plurality, a convex portion is provided on one side surface of the main body, and a concave portion having a shape that fits the convex portion is provided on the other side surface. A boarding / exiting structure characterized by comprising: A boarding / alighting structure according to claim 5,
The said boarding | projecting hall structure characterized by the said convex part protruding more compared with the amount of dents of the said recessed part. The boarding / alighting structure according to claim 4,
A boarding / exiting structure comprising: bolt connection means for connecting to the other boarding / exiting structure on each of both side surfaces of the main body in contact with another adjacent boarding / exiting structure. A landing structure according to any one of claims 1 to 7,
A landing site structure comprising a plurality of hook attachment holes for attaching a geotextile supporting hook to be embedded in the back of the main body for soil reinforcement measures. A boarding location installation method for installing a boarding location using the boarding location structure according to claim 7,
A main body installation step of arranging a plurality of the main bodies side by side;
A level adjustment step for adjusting the height and level of each of the installed main bodies by the level adjustment means;
A main body connecting step of connecting each of the main bodies after height adjustment and level adjustment by the bolt connecting means;
A grout injection step of injecting grout from the grout injection hole to each main body after height adjustment and level adjustment,
A height adjusting means arranging step of arranging the height adjusting means on each of the main bodies;
A boarding place installation method comprising: a top board separating arrangement step of arranging the top board on each of the height adjusting means.

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