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Abstract
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Currently, scholars have conducted extensive research on the anchoring methods and cable systems of suspension bridges, but there is relatively less research on the analysis of steel tower construction stages. As an important supporting part of the entire bridge, the stability of steel towers during installation directly affects the safety assurance during construction. In order to comprehensively understand the dynamic characteristics of steel towers during the construction stage, this paper adopts Midas Civil for the construction stage analysis of steel towers. Based on engineering reality, the paper simulates the variable cross-section of steel towers using the SPC section property calculator and establishes temporary active bracing and steel frame supports at designated positions using beam elements. To validate the effectiveness of this method, the paper conducts refined modeling and analysis of the entire steel tower using shell elements based on Ansys, and compares the differences in results between the two analysis software and element calculations to validate the effectiveness of such methods. Furthermore, considering the influence of wind loads and crane loads on the structure in Midas Civil, the paper analyzes the changes in structural strength and stiffness, providing useful references and guidance for this project and similar engineering endeavors.
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