China Opens World'S Highest And Longest Glass (Bottomed) Bridge
The much-heralded "world's highest and longest" glass-bottomed bridge has opened to visitors in central China.
It connects two mountain cliffs in what are known as the Avatar mountains in Zhangjiajie, Hunan province.
Completed in December, the 430m-long bridge cost $3.4m (£2.6m) to build and stands 300m above ground, state news agency Xinhua reported.
It has been paved with 99 panes of three-layered transparent glass.
And according to officials, the 6m-wide bridge - designed by Israeli architect Haim Dotan - has already set world records for its architecture and construction.
But officials have staged high-profile events to try and reassure the public of the bridge's safety.
Officials sent in sledgehammers and even drove a car, filled with passengers, across the bridge earlier this year.
The BBC's Dan Simmons was invited to take a bash at the bridge (pix attached).
Me here: if you've always wondered just how 'susceptible' you are to acrophobia, it would seem to me this is just the place to see if you are.
There were several very interesting photos embedded in this article (BBC) for anyone who would like a more detailed look- see (and probably YouTube videos as well).
I read that earlier. I had a bad experience in a glass elevator on the outside of a hotel in Benidorm so personally a glass bridge wouldn't be appealing.
No probs here.
Wouldn't catch me on it. Not after they've been smashing it with sledge hammers
So the Chinese have a "Chinese Valentine's Day"-who knew ???
It's not everyone's idea of a special day, but one couple in China chose to celebrate their wedding by dangling in mid-air from a glass bridge.
The bride and groom married on the Shiniuzhai bridge in Pingjiang, Hunan province on Chinese Valentine's Day on 9 August, China News Service reports.
Despite dangling 180m (590ft) above the ground, they were still able to smile for the camera in their wedding photos.
Glass bridges have become increasingly popular in China recently.
Me Here: There are multiple sites with these glass bridges. AND a good number of YouTube videos at the various sites, to include several of folks experiencing severe anxiety attacks (no one ever accused SOME YouTube uploaders of having good taste, or sensitive to the trails and tribulations of life).
IMO this is NOT a PhotoShopped image, but who knows for sure.
IMO the attached pix simply cries out for puns!!! Such as, 'our love is without restraints'.
May married life continue to give them thrills and excitement...
And the little one said......roll over......
Re the wedding pix: in any relationship there are ties that bind, AND then there are ties that REALLY bind!!!
Another pix from a glass bridge with children (I presume that the glass's reflection is not seen in this pix because of the position of the sun which creates a pretty nice 'illusion' of being suspended in mid-air).
I was bad enough walking across the glass part on the CN tower so
I reckon this would be a bridge too far .
For me it was more of the speed of the great glass elevator rushing up the side of the building I think. It was akin to a very high roller coaster ride which shot upwards, and conversely downwards when riding to/from the restaurant. On the other hand being on top of a revolving restaurant in a city was lovely because it was a leisurely circuit.
A lot of fears are learnt, SWMBO has a fear of heights, and has also, to a great extent, conquered it. Her mother was extremely afraid of heights and
she attributes her fear to that. She also made a decision early on, not to transfer those fears, and other behaviour attributed to her childhood, on
to our Children. None of whom do display those traits.
FYI: She grew up in an abusive home and carried a lot of baggage as a result. I was blessed in that I was able to support her and help her combat those demons from her youth. I did not know her when she was young.
The passion continues:
Today (01/05/18) from CNN:
"World's longest glass bridge opens in Hebei, China--Spanning two mountains in the Hongyagu Scenic Area, the new bridge also has an added fear feature -- it sways."
Well I see they also upped the ante with the swaying--that should help cull out the soft core of bridge walkers for whom the swaying is more than they can bear (after having successfully navigated the other bridge in the original topic).
There are 9 pixs in the CNN article; I picked this one only because the words on her pants are in English--it's been a long while since I read about this, but I seem to recall that a good many Chinese are bilingual [at an early age].
1-2 of the 9 pixs show the guard rails on BOTH sides of the bridge bowed (undulating) like they were a series of sine waves-really pronounced bowing. Holy Mackerel!!!! And there were crowds of people on the bridge when this was occurring (no signs of a panic that I could see in the pix; I wonder if there were 'auditory cues' created by the bowing/flexing--I'm betting there were.
Many positive things can be said about not only the engineers, etc., who designed this bridge, & those who built it, but the character of the individuals who in their own way overcame what must be significant fear to traverse it.
It looks very similar to our wobbly bridge. They cured the wobble in the end. Can't remember what they did.
The biggest problem with these sorts of bridges isn't the fears of the pedestrians who attempt to cross them. Have a thought for the blokes that had to build it!
I've no idea if that was before of after. But the day it opened it was frightening as people poured across and started the bridge wobbling.
And Leigh is so right about the builders!
Elementary Physics, Albeit Likely Oversimplified:
In physics, resonance is a phenomenon in which a vibrating system or external force drives another system to oscillate with greater amplitude at specific frequencies.
Frequencies at which the response amplitude is a relative maximum are known as the system's resonant frequencies or resonance frequencies. At resonant frequencies, small periodic driving forces have the ability to produce large amplitude oscillations, due to the storage of vibrational energy.
What I remember is that an internal combustion engine/a jet engine/whatever has a (inherent) resonance frequency that if the rpms are at occurring at that frequency (speed), the engine will, literally, vibrate to the point of a form of shaking self destruction. All objects have such a resonance frequency, but it's a very very narrow frequency, I. e., as an imaginary example, 100 rpms and not one rpm above or below that. I recall the prof in introductory physics saying that even a mountain has a resonance frequency that would cause it to disintegrate but the energy that would be needed to do that is impossible to achieve. I know that jet engines (at least used to) have a resonance frequency, and there is a warning in the flight manual to never set the throttle at that rpm.
In the bridge, my guess is that if the cadence of the walkers (and there was a sufficient number of them) happened to be, cumulatively, in sync, and that sync was the resonant frequency, the bridge would began to wobble and theoretically would collapse. I suppose the wind blowing could add to the wobble.
Lesson learned: don't ever find yourself standing on a bridge when a marching band goes over it; you never know what might happen!!
World's longest glass bridge visited by thousands daily
Updated pix (no date given).
Well calling it a popular destination seems an understatement; unless me eyes deceived me, just about everyone is going in the same direction. So when they get to the other side, just how do they get back.
FYI: likely these tourists all arrive on one of China's numerous high speed trains--SIGH!
They allow up to 500 on at a time although claim it could handle a couple of thousand. It sways if there are lots of people on it.
Bugga that for a joke, if I wanted to stand in line with a million people, it certainly wouldn't be at a "tourist attraction" unless it were the ONLY time we would be able to see it.
I'm with you, Leigh!
Tacoma Narrows Bridge circa 1940 (NO, not PhotoShopped)
YouTube has old film footage to include the famous scene in it of a lone car being tossed about.
Did it break?
OOOOH Yes! The uTube vid (and there's a whole genre of various types of collapses in the hits) is worth a view for those that have never seen it, as it's a very powerful reminder of Nature rules supreme and homo sapiens is nowhere near smart enough to tame her. But don't bother telling that to Elon Musk.