张家界大峡谷玻璃桥静载试验研究
Inner force analysis and static load test of Zhangjiajie pedestrian suspension bridge

张家界大峡谷玻璃人行桥采用异型悬索桥加玻璃桥面的大跨径组合体系，受力复杂，为了解该桥整体静力特性，通过现场静力试验，对实桥进行各工况作用下的模拟加载，并建立相应的有限元模型计算，将试验结果和计算结果进行对比，研究结果表明：静力荷载作用下，模型实测的应力、主梁挠度、塔顶水平位移、主缆线型、主缆及吊杆索力均与计算结果吻合较好，均满足规范要求，说明该桥具有足够的刚度和安全储备，为之后该类桥梁的设计和试验评价指标提供参考。
The Zhangjiajie Grand Canyon Glass Footbridge adopts a special suspension bridge and a large-span composite system with a glass bridge deck, therefore it is under complex stress state. In order to understand the overall static characteristics of the bridge, a real static test was conducted on the bridge. In addition, the corresponding finite element model calculations were established and the test results were compared with the calculation results. The results show that under the static load, the stress, main beam deflection, horizontal displacement at the top of the tower, main cable force and hanger force are in good agreement with the calculated results and meet the requirements of the specification, which demonstrates that the bridge has sufficient rigidity and safety reserves. This paper will provide reference for the design and evaluation of such type of bridges