On December 3rd along with the last piece of stiffening girder lifting precisely which is 41 tons and the glass bridge with steel box girder in grand canyon , Zhangjiajie , Hunan have joined successfully. It was reported that the grand canyon's glass bridge in Zhangjiajie is 430 meters , 6 meters wide and there is about 300 meters of the relative height from bridge deck to the bottom . Bridge deck were all made of transparent glass laid and the maximum tourist capacity with 800 passengers . At present the construction of a bridge had into the end of construction and expected to open on " May Day " , 2016 before .
After the final closing of the grand canyon’s glass bridge in Zhangjiajie will be the world-class bridge and tourism landscape engineering . At the same time it have become the international model of bridge construction and recorded ten " the most of the world " the highest of the world , the longest of the world first glass as the main force of the structure of the large bridge etc. . By the introduction of Wan Tianbao ,Deputy Chief Engineer , China Railway Bridge Group , Bridge Design Units that Zhangjiajie grand canyon glass bridge had the function of spans , tourist and landscape , the design of the glass bridge have overcome many technical problems , the building material , glass craft , wind anti skid , compressive resistance , wind resistance , frost resistance and so on were included .
Especially for the technical problems that the resonance caused easily when many pedestrians walk on the bridge and leading to the deformation of bridge's structure . On the glass bridge which the total length was 430 meters and 6 meters wide placed on 72 irregularly glass balls and each is 750 kg and that disrupted the pace of passage for many pedestrians objectively and curb the footbridge vibration effectively .
At the same time , for the glass of bridge deck’s material selection carrying out almost all the screening for the glass manufacturing enterprises which has certain influence on the global and have done the load roller compaction test repeatedly . At present , the glass of the bridge deck with the " large size , high hardness, high thickness , wear-resisting , antifreeze , super pure , explosion-proof , high load , mould -proof , the temperature drops –proof and many other features . According design , bridge deck can contain the maximum of visitors of 800 people so that tourists don't have to worry about the problem of the pressure of deck glass and that may be said " as strong as iron " . In addition , after opening the glass bridge will also establish a health monitoring system to ensure the durability ofthe bridge.