JP2019090201A - Station platform reinforcement structure and station platform reinforcement method - Google Patents

Abstract

To implement a station platform reinforcement structure and station platform reinforcement method, which can prevent a station platform from being damaged.SOLUTION: In order to reinforce a station platform where masonry walls 2 are made of stacked masonry blocks 1 and provided on both sides of the station platform, there is constructed a station platform reinforcement structure 100 having a structure comprising: a plurality of core materials 10 arranged at predetermined intervals along an extension direction of the masonry walls 2 so as to vertically penetrate a plurality of masonry blocks 1 of the masonry walls 2; splice members 20 that are spliced across the plurality of masonry blocks 1 aligned along the extension direction of the masonry walls 2 at predetermined height positions of the masonry walls 2 and are individually fixed on the plurality of masonry blocks 1; and a support member 30 that connects the splice members 20 to the station platform so as to keep a distance between splice members 20 disposed on the masonry walls 2 on both sides of the station platform. This makes it possible to keep a state in which an embankment 3 is supported by the masonry walls 2 on both sides of the platform and to prevent the station platform from being damaged even when a large-scale earthquake occurs.SELECTED DRAWING: Figure 1

Description

  The present invention relates to a reinforcement structure and reinforcement method for a station type station ground, and relates to a technique for reinforcing a station home having a structure in which the embankment is supported by a masonry wall in which stone blocks are stacked.

The embankment-type station home supporting the embankment with a masonry-type masonry wall in which masonry blocks are stacked is in use. Some existing station homes have been in service for a long time, and some have not met recent earthquake resistance standards.
It is feared that the embankment-type station platform's stone wall will be collapsed by external force during a large-scale earthquake, resulting in pile collapse or sliding collapse.
In order to reinforce such a masonry-type masonry wall, there is known a technique of fixing a reinforcing net having elasticity to the front face of the masonry wall (see, for example, Patent Document 1).

JP, 2013-221371, A

  However, the technique of Patent Document 1 is for preventing the stone block from spreading when the stone wall is broken, so that the broken stone block does not spread from the station home to the track side. However, there was a problem that it was impossible to prevent the station home itself from being damaged by the collapse of the stone wall.

  An object of the present invention is to provide a reinforcement structure for a station home and a reinforcement method for a station home that can prevent the station home from being damaged.

In order to achieve the above object, one invention according to the present application is:
It is a reinforcement structure of the station home that reinforces the station home where the stone wall where the stone blocks are stacked extends along the extension direction of the station home on both sides of the station home,
A plurality of core members disposed vertically through the plurality of masonry blocks in the masonry wall at predetermined intervals along the extending direction of the masonry wall;
Attachments which are attached at a predetermined height position of the masonry wall over a plurality of masonry blocks arranged along the extending direction of the masonry wall and are respectively fixed to the masonry blocks Members,
A supporting member for connecting the connecting member to the station home so as to maintain the distance between the connecting members disposed on the stone wall on both sides of the station home;
To have

If it is a reinforcement structure of the station home of such composition, the masonry wall which consists of a plurality of masonry blocks is unified by a plurality of core materials and a pair of connecting members, and the masonry walls on both sides of the station home sandwich the embankment Since the space between the masonry walls is restrained by the support member in the sagging state, even if the earth pressure that the earthbank collapses on both sides of the home acts on the masonry wall, the masonry wall resists the earth pressure Can.
That is, with the reinforcement structure of this station home, for example, even if a large-scale earthquake occurs, the state where the embankment is supported by the masonry walls on both sides of the home can be maintained, thus preventing the station home from being damaged. Can.

Also preferably,
The support member is disposed in a direction orthogonal to the extending direction of the station home,
Both ends of the support member are connected to the joint members disposed on the stone wall on both sides of the station home.

  By doing so, the distance between the stone walls on both sides of the home can be more suitably maintained, and the state in which the embankment is supported by the stone walls can be more suitably maintained.

Also preferably,
The core material vertically penetrates the plurality of masonry blocks in a posture in which the lower end portion is inclined toward the center side of the station home.

If the core material penetrating up and down a plurality of masonry blocks is installed in a posture in which the lower end portion is inclined to the area of the embankment on the center side of the station home, the embankment may collapse on both sides of the home When the pressure acts on the masonry wall, the pullout resistance of the core material suitably resists the earth pressure.
If the pullout resistance of the core material arranged in the inclined posture can be suitably resisted against the earth pressure, it is possible to preferably maintain the state in which the stone walls on both sides of the station platform are supporting the embankment. .

Also preferably,
On the outer surface of the masonry wall, a long pressing member fixed across a plurality of masonry blocks arranged along the extension direction of the masonry wall is fixed for each stage on which the masonry block is stacked. To be

  By fixing the long pressing member on the outer surface of the masonry wall, it is possible to prevent the masonry block of the masonry wall from bulging out, and it is possible to firmly integrate masonry walls consisting of a plurality of masonry blocks. It is possible to preferably maintain the condition that the stone walls on both sides of the station home support the embankment.

Also, another invention according to the present application is:
It is a reinforcement method of the station home that reinforces the station home where the existing stone wall where the masonry blocks are stacked extends along the extension direction of the station home, and the stone wall supports the embankment,
Disposing a plurality of core members vertically penetrating the plurality of masonry blocks in the masonry wall at predetermined intervals along the extending direction of the masonry wall;
A welding member is attached to a plurality of masonry blocks arranged along the extending direction of the masonry wall at a predetermined height position of the masonry wall, and a plurality of masonry blocks are respectively attached to the masonry plate A process of fixing,
Securing the connection member disposed on the stone wall to a stable portion of the embankment so as to maintain the stone wall supporting the embankment;
To have

  According to the reinforcement method of the station home of such a configuration, masonry walls composed of a plurality of masonry blocks are integrated by a plurality of core members and a pair of connecting members, and the state where the embankment is supported by the masonry walls is suitably maintained. Therefore, even if, for example, a large earthquake occurs, it is possible to prevent the station home from being damaged.

  According to the present invention, it is possible to prevent the station home from being damaged.

They are sectional drawing (a) which shows the reinforcement structure of the station platform of Embodiment 1, and a top view (b). They are sectional drawing (a) which shows the modification of the reinforcement structure of the station platform of Embodiment 1, and a top view (b). They are sectional drawing (a) which shows the reinforcement structure of the station platform of Embodiment 2, and a top view (b). They are sectional drawing (a) which shows the modification of the reinforcement structure of the station platform of Embodiment 2, and a top view (b). They are sectional drawing (a) which shows the reinforcement structure of the station platform of Embodiment 3, and a top view (b). They are sectional drawing (a) which shows the reinforcement structure of the station platform of Embodiment 4, and a top view (b). They are sectional drawing (a) which shows the reinforcement structure of the station platform of Embodiment 5, a top view (b), and a side view (c). They are sectional drawing (a) which shows the modification of the reinforcement structure of the station platform of Embodiment 5, (a), a top view (b), and a side view (c).

  Hereinafter, with reference to drawings, an embodiment of a reinforcement structure of a station platform and a reinforcement method of a station platform according to the present invention will be described in detail. However, although various limitations preferable for carrying out the present invention are given to the embodiments described below, the scope of the present invention is not limited to the following embodiments and the illustrated examples.

In this embodiment, the existing stone wall 2 in which a plurality of stone blocks 1 are stacked is the embankment type station home of a structure in which the embankment 3 is supported, and the extension direction of the station home on both sides of the station home The case of reinforcing the station home in which the masonry wall 2 is extended along will be described as an example.
The station home here is an island-type station home where trains arrive and leave on both sides of a home with a stone wall 2. The stone floor 2 of the station home has a plurality of stone blocks 1 so that the outer surface forms a vertical surface. It is piled up and formed.

(Embodiment 1)
For example, as shown in FIGS. 1 (a) and 1 (b), the reinforcement structure 100 of the station home of the present embodiment includes a plurality of masonry blocks in the masonry wall 2 at predetermined intervals along the extension direction of the masonry wall 2. A plurality of core materials 10 disposed vertically through 1 and a plurality of masonry blocks 1 arranged along the extending direction of the masonry wall 2 at a predetermined height position of the masonry wall 2 In order to maintain the distance between the joint members 20 which are jointed and fixed respectively to the plurality of stone blocks 1 and the joint members 20 arranged on the stone walls 2 on both sides of the station home, The support member 30 etc. which have connected the joint member 20 to the station home are provided.
The stone block 1 on the top of the stone wall 2 is called "stone" and is stacked in a manner of projecting from the station home to the track side.

The core material 10 is, for example, a steel rod, and the lower end portion penetrating the masonry block 1 is buried in the ground.
In the present embodiment, the core material 10 is disposed at intervals of every one masonry block along the extending direction of the masonry wall 2.
Even if this core material 10 is inserted into a through hole formed in the masonry wall 2 (the masonry block 1) and disposed, it is screwed into the masonry wall 2 (the masonry block 1) while forming the through hole. It may be disposed at

The attachment member 20 is, for example, a steel angle member having an L-shaped cross section, and is fixed to the inner wall surface of the masonry block 1 at the uppermost stage of the masonry wall 2 using an anchor 21.
In particular, the connection members 20 are fixed to the topmost plurality of masonry blocks 1 with anchors 21 respectively. That is, the plurality of masonry blocks 1 at the top of the masonry wall 2 are all fixed to the attachment member 20.

The support member 30 is, for example, a tie rod, and both ends thereof are respectively connected to the joint members 20 on both sides of the station home.
In particular, the support member 30 is disposed in a direction orthogonal to the extending direction of the station home, and both ends thereof are connected to the connecting member 20 disposed on the stone wall 2 on both sides of the station home There is.
The support members 30 support the pair of attachment members 20 so as to maintain a constant distance from each other, and hold the attachment members 20 such that the distance between the attachment members 20 does not change. Also, in other words, the support member 30 holds the connection wall 20 disposed on the stone wall 2 at the station platform so as to support the embankment 3.

For example, after arranging a plurality of core members 10 penetrating the plurality of stone blocks 1 in the stone wall 2 up and down, the reinforcement structure 100 of the station home having the above-described configuration is, for example, part of Digging up, connecting members 20 of a length extending over a plurality of masonry blocks 1 on the top step are fixed to masonry wall 2 and perpendicular to the welding members 20 disposed on masonry walls 2 on both sides of the station platform Both ends of the support member 30 can be connected.
In addition, after installing the welding member 20 and the supporting member 30, the filling 3 is backfilled and the asphalt pavement surface 4 which covers the filling 3 is formed in a home upper surface.

In such a station home reinforcement structure 100, a plurality of core materials 10 and a pair of connection members 20 integrate stone walls 2 composed of a plurality of stone blocks 1 and the stone volumes on both sides of the station home Since the wall 2 is restrained by the support member 30 in a state of sandwiching the embankment 3, even if the earth pressure that the earth embankment 3 collapses on the both sides of the home acts on the masonry wall 2, the masonry wall 2 resists the earth pressure can do.
That is, if reinforcement structure 100 of the station home of Embodiment 1 is built in the existing station home, for example, even if a large-scale earthquake occurs, the stone walls 2 on both sides of the home will not collapse, and the station home is damaged. There is nothing to lose.
Thus, if it is reinforcement structure 100 of the station home of this embodiment, it can prevent that a station home is damaged.

Moreover, if it is the reinforcement structure 100 of the station home of this Embodiment 1, it is possible to construct by construction on the upper surface of the home without requiring work to enter the track under the home, so the construction work time is the operation of the train There is no limit to the night.
As a result, the construction period can be shortened and the construction cost can be reduced.

In addition, when stability of the embankment 3 which is a foundation of a station platform is high, as shown to FIG. 2 (a) (b), it is not necessary to install the supporting member 30, for example.
Even with the reinforcement structure 100 of such a station home, it is possible to prevent the station home from being damaged.

Second Embodiment
Next, Embodiment 2 of the reinforcement structure of the station home and the reinforcement method of the station home according to the present invention will be described. The same parts as in the first embodiment are given the same reference numerals, and only different parts will be described.

  For example, as shown in FIGS. 3 (a) and 3 (b), the reinforcement structure 100 of the station home according to the second embodiment has a plurality of masonry blocks 1 vertically inclined with its lower end directed toward the center of the station home. And the core material 10 which penetrates.

If the core material 10 was installed in a posture in which the lower end portion was inclined toward the area of the embankment 3 on the center side of the station home, earth pressure that the embankment 3 collapsed on both sides of the home acted on the masonry wall 2 In such a case, the pullout resistance of the core material 10 suitably resists the earth pressure.
If the pullout resistance of the core material 10 disposed in the inclined posture can suitably resist the earth pressure, the stone wall 2 will not collapse and the station home will not be damaged.

  That is, with the reinforcement structure 100 of the station home of the second embodiment, the stone walls 2 on both sides of the home do not collapse even if, for example, a large-scale earthquake occurs, so that the station home is prevented from being damaged. it can.

  Moreover, if it is the reinforcement structure 100 of the station home of this Embodiment 2, the work which installs the core material 10 of the posture inclined toward the center side of the station home is unnecessary although the work to enter the track under the home is not required. As for part of the core material 10 from the station home to the track side, it is preferable to carry out at night when there is no train operation.

In addition, when the stability of the embankment 3 which is the foundation of a station platform is high, for example, as shown to FIG. 4 (a) (b), it is not necessary to install the supporting member 30. FIG.
Even with the reinforcement structure 100 of such a station home, it is possible to prevent the station home from being damaged.

(Embodiment 3)
Next, Embodiment 3 of the reinforcement structure of the station home and the reinforcement method of the station home according to the present invention will be described. The same parts as in the first embodiment are given the same reference numerals, and only different parts will be described.

  For example, as shown in FIGS. 5 (a) and 5 (b), the reinforcement structure 100 of the station home according to the third embodiment connects the connecting members 20 disposed on the stone walls 2 on both sides of the station home to the station home. A first support member 31 and a second support member 32 are provided.

The first support member 31 is, for example, a tie rod, and one end thereof is connected to the welding member 20 and the other end is connected to the second support member 32.
The first support member 31 is disposed in a direction perpendicular to the extending direction of the station home, and is vertically connected to the joint member 20.

The second support member 32 is, for example, a weight member such as a large block made of concrete, and the other end of the first support member 31 is connected to be embedded in the filling 3.
The second support member 32 is not limited to a weight member, and may be a pile member driven into the filling 3.

Even in the reinforcement structure 100 of such a station home, for example, when a large-scale earthquake occurs, the stone walls 2 on both sides of the home will not collapse, and the station home will not be damaged.
That is, even in the reinforcement structure 100 of the station home of the third embodiment, the station home can be prevented from being damaged.

Moreover, if it is the reinforcement structure 100 of the station home of this Embodiment 3, it is possible to construct by construction on the upper surface of the home without requiring the work to enter the track under the home, so the construction work time is the operation of the train There is no limit to the night.
As a result, the construction period can be shortened and the construction cost can be reduced.

(Embodiment 4)
Next, Embodiment 4 of the reinforcement structure of the station home and the reinforcement method of the station home according to the present invention will be described. The same parts as in the first embodiment are given the same reference numerals, and only different parts will be described.

In the reinforcement structure 100 of the station home of the fourth embodiment, for example, as shown in FIGS. 6 (a) and 6 (b), the connecting members 20 disposed on the stone walls 2 on both sides of the station home are connected to the station home. A support member 30 for stopping is buried in the earth 3 in an inclined posture in which the lower end portion is directed to the center side of the station home.
The support member 30 here is, for example, a steel rod, and is installed in a posture in which the lower end portion is inclined toward the region of the filling 3 on the center side of the home, and the upper end portion is coupled to the attachment member 20.

In this manner, if the support member 30 in a posture in which the lower end is inclined toward the center side of the station home is embedded in the filling 3 and the upper end is connected to the attachment member 20, the filling 3 is on both sides of the home. When the collapsing earth pressure acts on the masonry wall 2, the pullout resistance of the support member 30 suitably resists the earth pressure.
If the pullout resistance of the support member 30 that holds the attachment member 20 disposed on the masonry wall 2 to the station home can be suitably resisted against the earth pressure, the masonry wall 2 on both sides of the station home 2 Makes it easy to maintain the state of supporting the filling 3.

Even in the reinforcement structure 100 of such a station home, for example, when a large-scale earthquake occurs, the stone walls 2 on both sides of the home will not collapse, and the station home will not be damaged.
That is, even in the reinforcement structure 100 of the station home of the fourth embodiment, the station home can be prevented from being damaged.

  Moreover, if it is the reinforcement structure 100 of the station home of this Embodiment 4, the work which installs the support member 30 of the attitude | position inclined toward the center side of the station home is unnecessary although the operation which enters the track under a home is not required. As for the support member 30, it is preferable to carry out at night when there is no train operation since a part of the support member 30 may protrude from the station home to the track side.

Embodiment 5
Next, Embodiment 5 of the reinforcement structure of the station home and the reinforcement method of the station home according to the present invention will be described. The same parts as in the first embodiment are given the same reference numerals, and only different parts will be described.

In the reinforcement structure 100 of the station home according to the fifth embodiment, for example, as shown in FIGS. 7 (a) and 7 (b), the stone walls 2 are stacked in each step where the stone blocks 1 are stacked on the outer surface of the stone walls 2 of the station home. A long pressing member 40 is fixedly attached to a plurality of masonry blocks 1 arranged along the extending direction of the block.
In the present embodiment, since the attachment member 20 is fixed to the topmost masonry block 1 corresponding to the fifth level from the bottom, the long pressing members 40 are provided to the masonry block 1 from the bottom to the fourth level. I fixed it.

The long pressing member 40 is, for example, a steel angle member having an L-shaped cross section, and is fixed to the outer surface of the masonry wall 2 (the masonry block 1) using an anchor 41.
The long pressing member 40 has a function to prevent the masonry block 1 of the masonry wall 2 from protruding, and additionally has a function to firmly integrate the masonry wall 2 composed of a plurality of masonry blocks 1 ing.
The long presser member 40 has a size that does not go out on the track side of the portion where the stone block 1 (stone) on the top of the stone wall 2 projects from the station home to the track side.

Even in the reinforcement structure 100 of such a station home, for example, when a large-scale earthquake occurs, the stone walls 2 on both sides of the home will not collapse, and the station home will not be damaged.
That is, even in the reinforcement structure 100 of the station home of the fifth embodiment, the station home can be prevented from being damaged.

In addition, when the stability of the embankment 3 which is the foundation of a station platform is high, for example, as shown to FIG. 8 (a) (b), it is not necessary to install the supporting member 30. FIG.
In this embodiment, the long pressing member 40 is fixed to the outer surface of the masonry block 1 from the bottom to the third stage using the anchor 41, and the masonry block 1 for the fourth stage from the bottom and the masonry block 1 on the top stage The attachment member 20 was fixed using the anchor 21 in the jaw like portion between the stone and the stone.
Even in the reinforcement structure 100 of such a station home, the stone wall 2 composed of a plurality of stone blocks 1 can be firmly integrated, and the station home can be prevented from being damaged.

  As mentioned above, if reinforcement structure 100 of the station home of this Embodiment 1-5 is built in the existing station home, since it can prevent that station home is damaged, even when a large-scale earthquake occurs, The station home can be reinforced so that the stone walls 2 on both sides of the home do not collapse.

  In the above embodiment, although the case of reinforcing an island-type station home where trains arrive and leave on both sides of a home with stone wall 2 has been described as an example, the present invention is not limited to this. For example, the present invention may be applied to a relative-type home in which a train departs and arrives at one side of the home, and the single-sided home with the stone wall 2 is reinforced.

When the present invention is applied to reinforce a single-sided home having a masonry wall 2, the techniques of the third embodiment (see FIG. 5) and the fourth embodiment (see FIG. 6) described above may be used.
When reinforcing a single-sided home, for example, after arranging a plurality of core materials 10 penetrating the plurality of masonry blocks 1 in the masonry wall 2 up and down, a part of the embankment 3 on the upper surface side of the home is dug up and A connecting member 20 having a length extending over a plurality of masonry blocks 1 is fixed to the masonry wall 2, and the masonry wall 2 is disposed on the masonry wall 2 so as to support the embankment 3 The station shown in FIGS. 5 (a) and 5 (b) is provided by installing the first support member 31 and the second support member 32 in order to anchor the joint member 20 to the stable portion of the embankment 3 of the station home. A home reinforcement structure 100 can be constructed.

  In addition, it is needless to say that other specific details and the like can be appropriately changed.

Reference Signs List 1 masonry block 2 masonry wall 3 embankment 4 asphalt pavement surface 10 core material 20 attachment member 21 anchor 30 support member 31 first support member 32 second support member 40 long holding member 41 anchor 100 reinforcement structure of station home

Claims (5)

It is a reinforcement structure of the station home that reinforces the station home where the stone wall where the stone blocks are stacked extends along the extension direction of the station home on both sides of the station home,
A plurality of core members disposed vertically through the plurality of masonry blocks in the masonry wall at predetermined intervals along the extending direction of the masonry wall;
Attachments which are attached at a predetermined height position of the masonry wall over a plurality of masonry blocks arranged along the extending direction of the masonry wall and are respectively fixed to the masonry blocks Members,
A supporting member for connecting the connecting member to the station home so as to maintain the distance between the connecting members disposed on the stone wall on both sides of the station home;
A station home reinforcement structure characterized by having. The support member is disposed in a direction orthogonal to the extending direction of the station home,
The reinforcement structure of the station home according to claim 1, wherein both ends of the support member are connected to the connecting members disposed on the stone wall on both sides of the station home.   The station core according to claim 1 or 2, wherein the core material vertically penetrates the plurality of stone blocks in a posture in which the lower end portion is inclined toward the center side of the station home. Reinforcement structure.   On the outer surface of the masonry wall, a long pressing member fixed across a plurality of masonry blocks arranged along the extension direction of the masonry wall is fixed for each stage on which the masonry block is stacked. The reinforcement structure of the station home as described in any one of Claims 1-3 characterized by the above-mentioned. It is a reinforcement method of the station home that reinforces the station home where the existing stone wall where the masonry blocks are stacked extends along the extension direction of the station home, and the stone wall supports the embankment,
Disposing a plurality of core members vertically penetrating the plurality of masonry blocks in the masonry wall at predetermined intervals along the extending direction of the masonry wall;
A welding member is attached to a plurality of masonry blocks arranged along the extending direction of the masonry wall at a predetermined height position of the masonry wall, and a plurality of masonry blocks are respectively attached to the masonry plate A process of fixing,
Securing the connection member disposed on the stone wall to a stable portion of the embankment so as to maintain the stone wall supporting the embankment;
The station home reinforcement method characterized by having.

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