City Research Online

Abstract

As the largest filled-aperture radio telescope in the world, China’s five-hundred-meter diameter Aperture Spherical Radio Telescope (FAST) is supported using a unique ultra-high fatigue stress cable net structure to enable flexible deformation of the reflector. As each of the supporting cables is required to be capable of bearing an ultra-highfatigue stress (up to approximately 500 MPa),a new type of cable anchor is specially designed in this paper to provide required high prestress level in the cables. In this paper, the stress distribution of the steel strands inside the chilled cast anchor is analyzed, a method for adjusting the prestress force of the cable anchor is developed which can effectively reduce the stress concentration of the steel strands inside chilled cast anchor. The relationship between the anchorage efficiency coefficient and its influencing factors is established, which can be used for the design of the anchor and to optimize the performance of cable anchorage.

Publication Type:	Article
Additional Information:	© 2020. This manuscript version is made available under the CC-BY-NC-ND 4.0 license http://creativecommons.org/licenses/by-nc-nd/4.0/
Publisher Keywords:	FAST Project, Cable Anchor, Stress, Fatigue Design, Stress Concentration
Subjects:	T Technology > TA Engineering (General). Civil engineering (General)
Departments:	School of Science & Technology > Engineering
SWORD Depositor:	Symplectic Administrator

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