나선형(철도)

Spiral (railway)
철도 선로 기하학에 적용되는 공학 용어는 선로 전환 곡선을 참조하십시오.
스위스 브루시오 인근의 나선형 고가.

나선형(나선형 루프 또는 just loop)은 철도가 가파른 언덕을 오르기 위해 사용하는 기술이다.

철도의 나선은 고리를 완성할 때까지 일정한 곡선을 그리며 상승하며, 높이가 높아짐에 따라 스스로를 지나쳐 비교적 짧은 수평거리에서 철도가 수직 상승할 수 있게 된다. 지그재그에 대한 대안으로, 기차가 오르막길을 달리면서 정차하고 역방향으로 이동할 필요를 피한다. 기차가 각 루프의 길이보다 길면 자체 위에서 루프를 볼 수 있다.[1][2]

"루프"라는 용어는 또한 종종 급커브하다가 스스로 되돌아가는 철도에 사용된다: 철도가 스스로 교차하면 나선형이나 나선형을 형성하고, 그렇지 않으면 훨씬 더 흔한 말굽 곡선이나 굴곡을 형성한다.[3][4]

나선 목록

아르헨티나

호주.

불가리아

캐나다

중국

칭하이-티벳 철도의 관자오 나선은 2014년 32km 길이의 터널로 대체됐다.

코스타리카

10°28′44″N 84°4의 Brusio Spiral Viador의 복제품9′25″W / 10.47900°N 84.82374°W / 10.47900; 구아나카스테스 누에보 아레날에서 동쪽으로 10km 떨어진 트렌 투리스토 아레날 위 -84.82374.[38][39]

크로아티아

에리트레아

프랑스.

독일.

인도

인도 DHR의 루프(Agony Point)

다질링 히말라야 철도는 원래 5, 6개의 나선형 철도를 가지고 있었지만 한 번에 5개만 운행되고 있었다. 이 선은 또한 6개의 역행 또는 지그재그도 가지고 있다.[56][57]

이란

아일랜드

이탈리아

일본.

일본 히사쓰 선의 오코바 나선과 지그재그

케냐

1,000 mm (1,000 mm) 위에 세 개의 나선은 1000mm에 있다.케냐에서 우간다까지 3ft 3+3⁄8 인치) 게이지 철도의 선로 이 철도는 터널과 다리를 건설하여 나선형의 필요성을 없앤 맘바사-나이로비 표준궤간철도로 대체되었다.[73][74][75][76]

대한민국.

대한민국 중앙선 금대2터널

마다가스카르.

멕시코

미얀마

타지의 나선 – 미얀마 타웅기 선

뉴질랜드

노르웨이

페루

러시아

세르비아

슬로바키아

남아프리카 공화국

스페인

스리랑카

스위스

RhBAlbulaban의 Toua 나선형 터널

타이완

알리산 숲 철도의 3중 나선 고리

우간다

영국

웨일스 프페스티니오그 철도의 두알트 나선형 루프에 있는 다리.

미국

미국 캘리포니아 유니온 퍼시픽 철도의 테하차피 루프(Theachapi Loop)가 공중에서 바라봤다.
1903년 콜로라도 롤린스 고개 근처의 소총경 노치 루프 보기

참고 항목

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