Residual bearing capacity of the steel cables and anchorages of the FAST feed support system
LI Qingwei1,2, LI Hui1,2, JIANG Peng1,2, YAO Rui1,2, PAN Gaofeng1,2
1. National Astronomical Observatories, Chinese Academy of Sciences, Beijing 100101, China; 2. Key Laboratory of FAST, Chinese Academy of Sciences, Beijing 100101, China
Abstract：The flexible five-hundred-meter aperture spherical radio telescope (FAST) feed support system is a cable-driven parallel manipulator with large spans. The feed cabin is suspended by 6 parallel steel cables and moves slowly over a large range above the reflector through coordinated coiling and uncoiling of the 6 parallel steel cables. The residual bearing capacities of the steel cables and the anchorages that are reaching the design lifespan of 5 years were evaluated using failure tensile tests and tensile fatigue tests for cable and anchorage samples. The tests show that the steel cables and anchorages still have enough residual bearing capacity to continue service after 5 years. This research provides an experimental basis for increasing the service time of steel cables for such monitoring systems.
李庆伟, 李辉, 姜鹏, 姚蕊, 潘高峰. FAST馈源支撑钢索及舱索连接锚具役后剩余承载力研究[J]. 清华大学学报（自然科学版）, 2022, 62(11): 1758-1763,1779.
LI Qingwei, LI Hui, JIANG Peng, YAO Rui, PAN Gaofeng. Residual bearing capacity of the steel cables and anchorages of the FAST feed support system. Journal of Tsinghua University(Science and Technology), 2022, 62(11): 1758-1763,1779.
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2022, Vol. 62 
