JPS62288205A - Platform raising assembling construction method of station - Google Patents
Platform raising assembling construction method of stationInfo
- Publication number
- JPS62288205A JPS62288205A JP13024086A JP13024086A JPS62288205A JP S62288205 A JPS62288205 A JP S62288205A JP 13024086 A JP13024086 A JP 13024086A JP 13024086 A JP13024086 A JP 13024086A JP S62288205 A JPS62288205 A JP S62288205A
- Authority
- JP
- Japan
- Prior art keywords
- capstone
- retaining wall
- boarding
- area
- embedded
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
- 238000010276 construction Methods 0.000 title description 5
- 238000000034 method Methods 0.000 claims description 10
- 239000004575 stone Substances 0.000 claims description 8
- 229910000831 Steel Inorganic materials 0.000 description 7
- 239000010959 steel Substances 0.000 description 7
- 239000004570 mortar (masonry) Substances 0.000 description 3
- 230000000694 effects Effects 0.000 description 2
- 239000010426 asphalt Substances 0.000 description 1
- 238000005553 drilling Methods 0.000 description 1
- 239000002689 soil Substances 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Landscapes
- Refuge Islands, Traffic Blockers, Or Guard Fence (AREA)
Abstract
(57)【要約】本公報は電子出願前の出願データであるた
め要約のデータは記録されません。(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.
Description
【発明の詳細な説明】
３、発明の詳細な説明
（産業上の利用分！７）
本発明は鉄道の停車場の従来の乗降場を破壊することな
く、そのまま利用して乗降場高さを扛上できる停車場の
乗降場扛上組立工法に関するものである。[Detailed Description of the Invention] 3. Detailed Description of the Invention (Industrial Use! 7) The present invention increases the height of the boarding and alighting areas by using them as they are without destroying the conventional boarding and alighting areas of railway stations. This relates to a construction method for assembling a platform for boarding and alighting at a stop.
（従来の技術）
鉄道の停車場の乗降場には、これらの乗降場の高さが、
そこに停車する現行の車両の乗降部高さより極端に低い
ものがあり、そのままの状態では、幼児や老人が乗降す
ることはむずかしく、保安上問題となっている。(Prior art) The height of the boarding and alighting areas at railway stations is
Some of these are extremely lower than the height of the ingress/egress section of current vehicles that stop there, and in that state, it is difficult for young children and the elderly to get on and off, posing a safety problem.
もし、従来使用されている乗降場の上に乗降場を重ねて
設置できれば問題は少ないが、それは次に述べるような
理由により実際上不可能である。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.
第４図には従来の擁壁式１法によって構築した乗降場が
示されている。FIG. 4 shows a boarding area constructed using the conventional retaining wall type 1 method.
基ｇｔ！１９．１９が路盤２１内に所定間隔をへだてで
並列配置された擁壁１８，１８間に盛土２２し、当該盛
土２２の上に砕石等２０を敷き１乗降場（プラットホー
ム）を構成する。なお、２３はレールである。Base gt! 19 and 19 are placed in an embankment 22 between the retaining walls 18 and 18 arranged in parallel at a predetermined interval in the roadbed 21, and crushed stones or the like 20 are laid on the embankment 22 to form a platform. Note that 23 is a rail.
しかして、このような乗降場をそのまま利用して乗降場
の高さを高くしようとすれば、第５図に示すように、上
記擁壁１８の上面にさらに擁壁１８１，２０１を付加し
て擁壁上面の高さを扛上することが考えられる。However, if one were to use such a platform as it is to increase the height of the platform, as shown in FIG. One possibility is to raise the height of the top surface of the retaining wall.
しかしながら、この種の乗降場の扛上高さは通常３４ｃ
ｍ以上であり、従来の擁壁１８には扛上前においては第
５図においてａとして示す矢印方向の土庄に耐えていれ
ばよかった処、扛」１後には、さらにｂとして示す上圧
が付加されるため、擁壁１８を矢印方向へ押し出す力が
働き、極めて危険である。However, the lifting height of this type of landing is usually 34c.
m or more, and the conventional retaining wall 18 had only to withstand the soil pressure in the direction of the arrow shown as a in FIG. As a result, a force pushing out the retaining wall 18 in the direction of the arrow acts, which is extremely dangerous.
従って、現在では擁壁１８と基礎１９を取り除き、新設
工事をしているのが実情である。Therefore, the current situation is that the retaining wall 18 and foundation 19 are removed and new construction is being carried out.
（発明が解決しようとする問題点）
本発明は上述のような現況にかんがみ、従来の乗降場を
取り除かず、それをそのまま利用して、簡易に乗降場を
扛上できる組立工法を提供しようとするものである。(Problems to be Solved by the Invention) In view of the above-mentioned current situation, the present invention seeks to provide an assembly method that allows the conventional boarding and alighting areas to be easily lifted up without removing them and using them as they are. It is something to do.
（問題点を解決するための手段）
本発明は少なくとも１側に、下部が路盤中に埋め込まれ
た擁壁を有する乗降場を前提とする。(Means for Solving the Problems) The present invention presupposes a landing having, on at least one side, a retaining wall whose lower part is embedded in the roadbed.
北記擁１−１町の１−面にビームを介して笠石の１側の
Ｆ面を、当該笠石か水平を維持するように（／４定配置
する。The F side of the 1st side of the capstone is placed on the 1-plane of Kitaki-yoi 1-1 town via the beam so that the capstone remains horizontal (/4).
上記笠石の他側の下面を下部が乗降場内に埋め込まれた
笠石受ブロックで固定支持する。上記笠石受ブロックに
働く、水平垂直分力詮方ぐ、少なくとも上記擁壁の、路
盤中に埋め込まれた部分を指向するように設定する。The lower surface of the other side of the capstone is fixedly supported by a capstone support block whose lower part is embedded in the landing area. The horizontal and vertical force acting on the capstone receiving block is set so as to direct at least the portion of the retaining wall embedded in the roadbed.
上記笠石および笠石受ブロックの他側の乗降場の上面に
盛土又は砕石等を敷いて笠石上面と同一高さとする。Fill the top surface of the landing area on the other side of the capstone and the capstone receiving block with embankment or crushed stones so that it is at the same height as the top surface of the capstone.
（実施例）
本発明を第１図〜第２図（ｂ）に示す実施例に従って説
明する。(Example) The present invention will be explained according to the example shown in FIG. 1 to FIG. 2(b).
ｌは下部の基礎３および必要によりその上方の一部２が
路盤５中に埋め込まれた擁壁で、この実施例では擁壁１
と１とは所定間隔をへたてて立設配置され、その間は盛
土６され、盛土６の上方には例えば砕石が敷かれている
。なお、１７はレールである。上記擁壁１．１と盛土６
とで従来の高さの低い乗降場が構成されている。1 is a retaining wall whose lower foundation 3 and a part 2 above it are embedded in the roadbed 5, and in this embodiment, the retaining wall 1
and 1 are arranged upright at a predetermined interval, and an embankment 6 is placed between them, and above the embankment 6, for example, crushed stone is laid. Note that 17 is a rail. Above retaining wall 1.1 and embankment 6
A conventional low-height boarding and alighting area is constructed.
この従来の乗降場の高さを扛上するには次のようにして
行う。The height of this conventional boarding area can be raised in the following manner.
擁壁１，１の上面に細巾のＨ形鋼７を介して笠石９，９
の１側の下面を、従来の乗降場の長手方向軸線を中心と
して対称に固定する。８はＨ形鋼７を擁壁ｌの上面４に
固定するためのアンカーポルト、８１は笠石９の１側の
下面をＨ形鋼７に固定するためのアンカーボルトである
。この実施例においては笠石９はユニット笠石９１を、
又Ｈ形鋼７はユニッ）Ｈ形鋼７１を連続的にＲｎ固定し
たことからなっている。笠石９とＨ形鋼７とをアンカー
ボルト８１で固定する方法としては第２図（ａ）に示す
ような方法によることができる。Capstones 9, 9 are attached to the upper surfaces of retaining walls 1, 1 via narrow H-beams 7.
The lower surface of one side of the board is fixed symmetrically about the longitudinal axis of the conventional landing area. 8 is an anchor port for fixing the H-shaped steel 7 to the upper surface 4 of the retaining wall l, and 81 is an anchor bolt for fixing the lower surface of one side of the capstone 9 to the H-shaped steel 7. In this embodiment, the capstone 9 is a unit capstone 91,
Further, the H-beam 7 is made up of a unitary H-beam 71 that is continuously fixed at Rn. 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. 2(a) can be used.
笠石９の１側に縦方向の内径の大きいボルト孔８２を形
成し、当該ボルト孔８２と重なり合う小径のボルト孔８
３をＨ形ｆＩ４７の対向部位に形成する。先端部の所定
部位の外周に突部８４を形成したポルト８１を先端部方
向からボルト孔８２に挿入する。突部８４の外周はボル
ト孔８３の内径より大に設定されているので、ポルト８
１は突部８４がボルト孔８３の上面に接した位置で停止
する。この状ｊＥではポルト８１の先端は所定だけボル
ト孔８３より下方へ突出している。ち該突出部にナンド
８５を螺入してポルト８１を固定する。この状ｆ島で大
形ボルト孔８２に、たとえばモルタルを流し込んで固化
させる。第２図（ａ）の左側における固定も同様に行わ
れる。A bolt hole 82 with a large vertical inner diameter is formed on the first side of the capstone 9, and a bolt hole 8 with a small diameter overlaps with the bolt hole 82.
3 is formed at the opposite site of H-shaped fI47. A port 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 port 8
1 stops at a position where the protrusion 84 touches the upper surface of the bolt hole 83. In this state jE, the tip of the port 81 protrudes downward from the bolt hole 83 by a predetermined amount. In other words, the port 81 is fixed by screwing the nand 85 into the protrusion. For example, mortar is poured into the large bolt hole 82 in this state f and is solidified. Fixation on the left side of FIG. 2(a) is done in a similar manner.
笠石９，９の他側の下面は、従来の乗降場６の」二部に
、その下部が埋め込まれた笠石受ブロック１０の上面と
鋼棒１００によって従来の乗降場の長手方向軸線を中心
として対称に固着される。笠石９と笠石受ブロンク１０
との鋼棒１００による固定はたとえば第２図（ｂ）に示
すような方法によることができる。The lower surface of the other side of the capstone 9, 9 is centered on the longitudinal axis of the conventional platform by the upper surface of a capstone receiving block 10 whose lower part is embedded in the second part of the conventional platform 6, and the steel rod 100. fixed symmetrically. Kasaishi 9 and Kasaishi Uke Bronc 10
The fixing with the steel rod 100 can be done, for example, by a method as shown in FIG. 2(b).
笠石９の他方端と笠石受ブロック１０との対向部位を貫
通する大径孔１１１，１１２を形成し、当該大径ボルト
孔１１２０所定高さ部位迄をモルタル１１３等で埋め込
み、大径孔１１１と大径孔１１２の上部空間にｗＪ棒１
００を挿入した後、挿入された鋼棒１００と大径孔１１
１，１１２の上部空間にモルタルを埋め込む、第２図（
ａ）におけるＨ形Ｗ４７と擁壁１の」二面との固定は従
来の擁壁ｌの上部に穿孔し、アンカーボルトを挿入する
ことによって行なうことができる。笠石受ブロックＩＱ
は下方に行くに従かい肉太となっている。この状態では
笠石９，９の上面は従来の乗降場の」二面と１王ぼ平行
な木モ面旧にある。Large diameter holes 111 and 112 are formed passing through the opposite end of the capstone 9 and the capstone receiving block 10, and the large diameter bolt holes 1120 are filled with mortar 113 or the like up to a predetermined height. wJ rod 1 in the upper space of the large diameter hole 112
After inserting the steel rod 100 and the large diameter hole 11
1,112 Embed mortar in the upper space, Fig. 2 (
The H-shaped W47 in a) can be fixed to the two sides of the retaining wall 1 by drilling holes in the upper part of the conventional retaining wall 1 and inserting anchor bolts. Kasaishi Uke Block IQ
It becomes thicker as it goes downward. In this state, the upper surface of the capstones 9 and 9 is on the wooden surface, which is approximately parallel to the two surfaces of the conventional boarding and alighting area.
笠石９，９と笠石受ブロンクｔｏ、ｔｏ間の従来の乗降
場の上に盛土１２し、盛土１２のトに砕石１３をｇｌさ
、必要によりその」−にアスファルト舗装置４をする。An embankment 12 is placed on the conventional landing area between the capstones 9, 9 and the capstone support broncs to, to, and crushed stone 13 is placed on the top of the embankment 12, and asphalt paving 4 is placed on the top of the embankment 12, if necessary.
なお、１５は盲人用警告ブロフクである。In addition, 15 is a warning block for blind people.
このようにして、従来の乗降場よりｈだけ、その表面が
扛上した乗降場が構成できる。この場合、笠石受ブロッ
ク１０に与えられる水平、垂直分力線１６は少なくとも
擁壁ｌの、道床５中に埋め込まれた部分を指向するよう
に諸元が設定される。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, the specifications are set so that the horizontal and vertical force lines 16 applied to the capstone receiving block 10 are directed at least to the portion of the retaining wall l embedded in the track bed 5.
従って、扛上された乗降場の土圧は扛上される前の乗降
場に埋め込まれた笠石受プロ）り１０の水平垂直分力と
して路盤５中に埋め込まれた擁壁部分に与えられるので
、擁壁ｌには第３図に示すように扛上される前の乗降場
の土圧ａと扛上された乗降場の垂直力のみが与えられ、
上記垂直力は基礎３で十分耐えられるので、擁壁１には
扛上される前の程度とほぼ等しい土圧しか与えられず、
強度的な弱点は生ずることがない。Therefore, the earth pressure of the lifted platform is applied to the retaining wall part embedded in the roadbed 5 as a horizontal and vertical component of the capstone support plate 10 embedded in the platform before being lifted. , only the earth pressure a of the landing area before being lifted up and the vertical force of the lifting area are applied to the retaining wall l, as shown in Figure 3.
Since the above vertical force can be sufficiently withstood by the foundation 3, only the earth pressure that is approximately the same as the level before being lifted up is applied to the retaining wall 1.
There are no strong weaknesses.
（発明の効果） 本発明の効果の主なものをあげれば次のとおりである。(Effect of the invention) The main effects of the present invention are as follows.
り本発明によれば従来の乗降場をそのまま利用して乗降
場の扛上をするものであるから従来のように従来の乗降
場を基礎から取り壊し、そこへ扛上した新しい乗降場を
設ける、ということは全く必要がないので、従来の方式
と比し、乗降場扛上に要する時間、労力および費用を極
端に少となしうる。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 installed there. Since this is not necessary at all, the time, effort and cost required for boarding and disembarking can be significantly reduced compared to conventional systems.
２）シかも扛上作業は擁壁にビームを介して笠石および
笠石受ブロックを１体のごとく固定し、盛土、砕石撒布
等をしさえすればよいので、きわめて簡易である。2) The lifting work is extremely simple, as all that is required is to fix the capstone and capstone receiving block to the retaining wall via beams as if they were one unit, and then perform embankment, scattering of crushed stones, etc.
３）又、扛上した乗降場の受ける荷重は従来の乗降場に
１部が埋め込まれた笠石受ブロックと路盤中に埋め込ま
れた擁壁部分で主として受けるので、第３図について詳
述したように十分荷重に耐えられ、強度的な弱点は生ず
ることがなく、安全性の高い扛上乗降場を提供すること
ができる。3) In addition, the load on the lifted platform is mainly borne by the capstone support block, which is partially embedded in the conventional platform, and the retaining wall part, which is embedded in the roadbed. It is possible to provide a highly safe landing platform that can sufficiently withstand loads without causing any weak points in strength.
第１図は本発明の全体構成を示す斜視図。
第２図（ａ）は第１図における笠石の１側下面とＨ形鋼
上面との固定方法の一例を示す一部断面側面図、第２図
（ｂ）は第１図における笠石の他方側下面と笠石受ブロ
ックの対向上面との固定方法の一例を示す一部断面側面
図、第３図は本発明の詳細な説明するための側面図、第
４図は従来の擁壁式１法による乗降場構築工法を説明す
るための側面図、第５図は第４図の擁壁式１法による乗
降場を扛上する場合に考えられる一工法とその場合にお
ける欠点を説明するための側面図である。
ｔ、、、１壁、５８１．路盤、６１９９乗降場、７００
．ビーム、９．、、擬石、１０゜笠石受ブロンク、１２
．、、盛土、１３０． 砕石、１６．、、笠石受ブロン
クに働く水４ｉ屯直分力線
第２因 （０Ｌ）
第２図（ｂ）
第３図
第４図FIG. 1 is a perspective view showing the overall configuration of the present invention. Fig. 2(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 in Fig. 1 to the upper surface of the H-section steel, and Fig. 2(b) is a side view of the other side of the capstone in Fig. 1. A partially sectional side view showing an example of a method of fixing the lower surface and the opposing upper surface of the capstone receiving block, FIG. 3 is a side view for explaining the present invention in detail, and FIG. 4 is a conventional retaining wall type 1 method. A side view for explaining the construction method of the landing area, and Figure 5 is a side view for explaining one possible construction method for lifting the landing area using the retaining wall method 1 shown in Figure 4, and the drawbacks in that case. It is. t, , 1 wall, 581. Roadbed, 6199 boarding area, 700
．． Beam, 9. ,, fake stone, 10° Kasaishi uke bronc, 12
．． ,, embankment, 130. Crushed stone, 16. ,, 2nd factor of direct line of force of water acting on Kasaishi Uke bronc (0L) Fig. 2(b) Fig. 3 Fig. 4
Claims (1)
ームを介して笠石の１側の下面を当該笠石が水平を維持
するように固定配置 し、当該笠石の他側の下面を、下部が乗降場内に埋め込
まれた笠石受ブロックで固定支持し、かつ上記笠石受ブ
ロックに働く、水平垂直分力線が少なくとも上記擁壁の
、路盤中に埋め込まれている部分を指向するように設定
し、上記笠石および笠石受ブロックの他側の乗降場の上
面に盛土又は砕石等を敷いて笠石上面と同一高さとする
ことを特徴とする停車場の乗降場扛上組立工法。[Claims] In a boarding and alighting area having a retaining wall whose lower part is embedded in the roadbed on at least one side, the lower surface of one side of the capstone is maintained horizontally by a beam on the upper surface of the retaining wall. 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 boarding area, and the horizontal and vertical force lines acting on the capstone receiving block are at least close to the retaining wall. The capstone is set so as to face the part embedded in the roadbed, and embankment or crushed stone is 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. Assembly method for boarding and alighting stations.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP13024086A JPS62288205A (en) | 1986-06-06 | 1986-06-06 | Platform raising assembling construction method of station |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP13024086A JPS62288205A (en) | 1986-06-06 | 1986-06-06 | Platform raising assembling construction method of station |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS62288205A true JPS62288205A (en) | 1987-12-15 |
| JPH0527722B2 JPH0527722B2 (en) | 1993-04-22 |
Family
ID=15029473
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP13024086A Granted JPS62288205A (en) | 1986-06-06 | 1986-06-06 | Platform raising assembling construction method of station |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS62288205A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2014062407A (en) * | 2012-09-21 | 2014-04-10 | Mitsubishi Heavy Industries Transportation Equipment Engineering & Service Co Ltd | Structure and method for fixing platform door |
| CN110804962A (en) * | 2019-11-07 | 2020-02-18 | 中铁电气化局集团有限公司 | Prefabricated assembled railway platform and manufacturing method thereof |
| JP2020165094A (en) * | 2019-03-28 | 2020-10-08 | 東日本旅客鉄道株式会社 | Station platform reinforcement structure |
| JP2020165092A (en) * | 2019-03-28 | 2020-10-08 | 東日本旅客鉄道株式会社 | Station platform reinforcement structure |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP5857379B2 (en) * | 2011-11-07 | 2016-02-10 | 東急建設株式会社 | Platform and platform construction method |
-
1986
- 1986-06-06 JP JP13024086A patent/JPS62288205A/en active Granted
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2014062407A (en) * | 2012-09-21 | 2014-04-10 | Mitsubishi Heavy Industries Transportation Equipment Engineering & Service Co Ltd | Structure and method for fixing platform door |
| JP2020165094A (en) * | 2019-03-28 | 2020-10-08 | 東日本旅客鉄道株式会社 | Station platform reinforcement structure |
| JP2020165092A (en) * | 2019-03-28 | 2020-10-08 | 東日本旅客鉄道株式会社 | Station platform reinforcement structure |
| CN110804962A (en) * | 2019-11-07 | 2020-02-18 | 中铁电气化局集团有限公司 | Prefabricated assembled railway platform and manufacturing method thereof |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0527722B2 (en) | 1993-04-22 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| RU2610476C1 (en) | Composite levelling unit under barrier railing above design of retaining wall, retaining soil pressure | |
| AT391499B (en) | RAILWAY CONSTRUCTION, ESPECIALLY FOR RAILWAY VEHICLES WITH VERY HIGH TRAVELING SPEEDS | |
| CN108103867A (en) | A kind of hangar tunnel formula antiskid structure and construction method with roadnet | |
| GB2282837A (en) | Foundation and support for an elevated road | |
| JPS62288205A (en) | Platform raising assembling construction method of station | |
| CN111395065A (en) | Pile plate roadbed structure and railway roadbed | |
| CN217419647U (en) | Prestress applying structure and foundation pit beam string steel pull rod prestress applying node | |
| CN202849877U (en) | Split type roadbed structure | |
| CN216275303U (en) | Sound barrier and bridge | |
| JP4685341B2 (en) | Viaduct construction method | |
| JP2903003B2 (en) | Railway station platform | |
| KR100605495B1 (en) | Trenchless method of underground passage and structure thereof | |
| JP2000008304A (en) | Pedestal for rail road work beam and execution method of pedestal for rail road work beam | |
| CN212533541U (en) | Pile plate roadbed structure and railway roadbed | |
| WO2004055273A1 (en) | Multi-level undercut excavation method using superimposed posts | |
| JP5982143B2 (en) | Reinforcing structure and reinforcing method for existing structure | |
| JPH09296407A (en) | Lining board | |
| KR200344104Y1 (en) | Underground passage structure using trenchless method | |
| JP3661999B2 (en) | Construction method of guardrail foundation | |
| US1393966A (en) | Concrete building structure | |
| EP1106737A2 (en) | Station platform | |
| CN218203954U (en) | Sound barrier beam suitable for confined space | |
| CN221052360U (en) | Railway simply supported T-beam combined pavement structure with sound barrier | |
| JP3779978B2 (en) | Elevated traffic route | |
| JP2958875B1 (en) | Switching method directly under the track |