Construction Mechanical Analysis and Techniques of Ultra-high Large-size Möbius Ring Structure

Abstract

The Xi'an Silk Road Tower is a special-shaped steel tower, which stands approximately 140 meters high. Given its small diameter, the tower was divided into several segments, which were assembled on the ground, and then lifted using a heavyduty tower crane attached. Based on the design codes and standards of the tower crane, safety assessment principles were proposed for the attachment of the heavy-duty tower crane to ultra-high slender structures, which was verified safe, feasible and easy to operate in practice. Additionally, a prefabricated inner support was designed for the installation of a large-scale Möbius ring. The designed inner support structure offered superior operating convenience and construction safety. Furthermore, an ICP algorithm for UAV scanning data correction was developed to measure the shape and position of the assembled structure at up to hundred meters high, and the scanning accuracy was significantly improved after correction.