Name: 這是在倫敦最有趣的屋頂。 (This is the most interesting roof in London.)
Uploaded: 2022-10-17T16:46:19.000Z
Duration: 6 min 12 s

- The Royal Albert Hall is one of the most famous

- 皇家阿爾伯特音樂廳是最著名的音樂廳之一。

and prestigious concert halls in Britain and the world.

以及英國和世界上著名的音樂廳。

and basically every world famous musician and band has performed here at some point.

基本上每一個世界著名的音樂家和樂隊都曾在這裡表演過。

wasn't really well developed back in the 19th century.

在19世紀的時候還沒有真正發展起來。

A tall, oval-shaped auditorium with a domed glass roof,

一個高大的、橢圓形的禮堂，有一個圓頂玻璃屋頂。

好吧，它看起來令人印象深刻，很有威嚴。

but it created an accidental echo chamber,

但它創造了一個意外的回聲室。

the exact opposite of the focused sound that you'd want for a concert.

與你在音樂會上想要的集中的聲音完全相反。

To see how they fixed it, we need to go up,

要看他們是如何修復的，我們需要往上走。

to the parts that the public aren't allowed into.

- It was constructed without any thoughts

- 它是在沒有任何想法的情況下建造的

of acoustics, really, but it was also glazed,

真的，是聲學的問題，但它也是釉面的問題。

The Prince of Wales who became King Edward VII

成為國王愛德華七世的威爾士王子

made a speech there at the public opening.

在公開的開幕式上發表了講話。

每個人都聽到了他的聲音兩次。

So immediately they had to do something to solve the acoustics,

是以，他們必須立即做些什麼來解決聲學問題。

and they installed what's called a calico velarium,

他們安裝了所謂的卡里科天鵝堡。

it's like a sail cloth hung from the roof.

它就像一塊掛在屋頂上的帆布。

the inner-glazed roof suffered from leakage,

broken glass panes as a result of the Second World War,

由於第二次世界大戰的影響，玻璃窗格破碎。

and also daylight really wasn't suitable for a modern hall.

而且日光真的不適合現代大廳。

The inner glazing of the dome was removed and replaced in 1949

穹頂的內層玻璃在1949年被拆除和替換。

by an aluminium velarium, which is what you see there now.

由一個鋁製的天窗，也就是你現在看到的東西。

In the late 1960s, the now-iconic "mushrooms" were added to the hall.

在20世紀60年代末，現在具有代表性的 "蘑菇 "被添加到大廳中。

它們是懸浮的、凸形的擴散器。

and they help cut down the echo tremendously.

In 2019, the sound system was replaced completely

within the hall, and the subjective response,

the reaction from audiences, has been absolutely tremendous.

That is the glass roof, it is 40 meters down to the floor,

那是玻璃屋頂，它距離地面有40米。

and just through there is an air vent called the "corona",

就在那裡，有一個叫做 "日冕 "的通風口。

and running across it is a tension steel mesh

I am assured by the team here that it is fail-safe

這裡的團隊向我保證，它是無故障的。

[笑]一定是......哦，我往下看了看!

[laughing] I should not have looked down.

I mean, you're health and safety officer here, right?

我是說，你是這裡的健康和安全官員，對嗎？

- You're just casually standing on the mesh?

- 你只是隨意地站在網狀物上？

- Mm-hm. Yep. Feel free to step out with me.

- 嗯，嗯。是的。隨意和我一起走出去。

- That's a full fear response from me, that.

- 這是我的一個充分的恐懼反應，這。

I was going to say, is there anything I can grab onto?

我想說的是，有什麼我可以抓住的嗎？

Including the fire brigade! - [laughing] I was going to ask,

哦，我的上帝，它反彈了。它彈起來了。

- Technicians, people who need to put shows on and rigging.

- 技術人員，需要把演出和索具的人。

- Haah, ha-haah. Putting all my weight on that foot

- 哈，哈哈哈。把我所有的重量放在那隻腳上

是如此，如此困難，該死的地獄。

- The weight of the Royal Albert Hall roof,

- 皇家阿爾伯特大廳屋頂的重量。

the dead weight of the wrought-iron structure is about 340 tonnes.

The roof itself in total can take about a thousand tonnes,

屋頂本身的總重量可以達到約一千噸。

inclusive of all permanent and imposed loads, such as wind and snow loading.

包括所有永久和強加的負荷，如風和雪的負荷。

There is approximately a hundred motorized chain hoists

which hang from the original wrought iron structure of the roof,

懸掛在屋頂的原始鍛鐵結構上。

but some can carry up to 1-2 tonnes of show infrastructure.

但有些人可以攜帶多達1-2噸的演出基礎設施。

We have lighting rails, which support lighting,

which provide the acoustic dampening of the auditorium.

The mushrooms, despite their quite substantial size,

蘑菇，儘管它們的體積相當可觀。

All of the mushrooms, show infrastructure, speakers,

所有的蘑菇，顯示基礎設施，揚聲器。

is all hung from the original wrought iron roof structure.

是全部懸掛在原來的鍛鐵屋頂結構上。

- 我不確定我現在能不能移動。

- Just look forward, just look forward and walk.

- 只要向前看，只要向前看，就能走。

就這樣走著，看著，就這樣看著杆子。

and that's it, you've done it, well done.

就這樣，你已經做到了，做得很好。

because the pole is connected exactly the same

so temperatures are regularly in the thirties and forties.

是以，氣溫經常在三十和四十度左右。

- Typically, whenever there's a fall-from-height risk,

- 通常情況下，只要有從高處墜落的風險。

the factor of safety on the material properties

that would go into the design of the tension wire grid

在拉線網的設計中，要考慮到這一點。

fivefold weight allowance of the material property which it can support.

它所能支持的材料屬性的五倍重量允許。

- But the most surprising thing of all about this roof