Abstract
Considering the distinctive structural features and complex construction aspects of the five-hundred-meter aperture spherical radio telescope (FAST), this paper proposes the accumulative traction of serial cable construction technology (ATSC). This method makes full use of the guiding function and load-bearing capacity of guide ropes, which are simple and inexpensive, and the setting of catwalks is avoided. The entire ATSC process is divided into several static cases, and the NDFEM form-finding method is introduced to obtain the structural response of each case. Based on the principle of the constant total unstressed length of guide-rope elements, two strategies and a varying multiplication coefficient, λ, are introduced, and the “element length recursive multiplication” strategy is found to excel in terms of the analysis efficiency. Additionally, the total unstressed length of the guide-rope elements is set to three different values to determine the configuration trends. The results show that the most unfavorable configuration of guide ropes exists in initial cases and that the optimal unstressed length of the guide rope lies at an intermediate value between the total unstressed length of the serial main cables and the straight-line distance between the two endpoints of the guide rope for FAST.
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