黑人中文字幕一区二区三区,日韩av片无码一区二区不卡电影,日韩毛片毛片久久精品,久久3,日本高清视频一区二区三区四区,四虎新网址,成人影院91sp42

banner
Zhangjiajie Glass Footbridge
2017-12-23 09:21:06


Zhangjiajie Glass Footbridge is located in the scenic spot of Zhang Jiajie Grand Canyon and is labeled the longest and highest transparent glass bridge in the world. The total length is 430m and width is 6m. The distance from the bridge deck to canyon bottom is 300m and 800 people are allowed to stand on the deck one time. The deck is wholly paved by transparent glass and the highest Bungee platform of the world is settled at the center of the bridge. The whole project is free from bracket of reinforcing steel bar and is all-glass construction. After completion, it will be the first cable-stayed glass bridge located in high mountains and deep canyons in the world, as well as the longest and highest glass bridge and the first one to adopt advanced composite material in construction.


張家界大峽谷玻璃橋.jpg