Chen Zhidong, chairman of Zhangjiajie Grand Canyon Scenic Area, said that the most "demanding" work is the testing of glass bridges, such as the compression, wind and earthquake resistance of glass. According to the design requirements, the size of the glass bridge deck of Zhangjiajie Grand Canyon is about 305cm×4420cm, and 99 pieces are needed for * *, with a thickness of 4.856cm ... Each piece of glass will undergo many tests such as anti-freezing, explosion-proof, mildew-proof, temperature drop prevention and earthquake resistance. To ensure "zero error and zero risk".

Extended data:

Design parameters:

Yuntiandu is 536 meters long and the bridge deck is more than 280 meters away from the bottom of the valley. There are four cable towers in the whole bridge, with the highest height of 40.65 meters. The distance between the lateral centers of the two towers on the east and west sides is 50 meters and 45 meters respectively. The transverse spacing of the main cable at the pylon is 6 times that of the middle part of the bridge span, the transverse rise-span ratio is 1:2 1, and the height-span ratio of the main girder is 1:625. ?

The stiffening beam has a total length of 375 meters and a span of 373 meters, and its longitudinal slope is-1.5% from west to east. There are 7 types along the bridge, * * * with 37 sections, with standard section length10m, end section length12.5m, height of 0.6m and maximum weight of 80.8t..

Widen the width within 50m at both ends, and the bridge deck will be changed from 6m to 15m. The transverse span of the main longitudinal beam is 4.5m, and 1 side longitudinal beam is added at the upper, downstream and outer sides of the widened section; The standard spacing of beams and the spacing of slings along the bridge are 5m.

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