Intelligent Discrimination Method Based on Digital Twins for Analyzing Sensitivity of Mechanical Parameters of Prestressed Cables  
[PERSON]  
1 Faculty of Architecture, Civil and Transportation Engineering, Beijing University of Technology, Beijing 100124, China; [EMAIL_ADDRESS] (G.S. ); [EMAIL_ADDRESS] (A.J. ); [EMAIL_ADDRESS] (W.L. )12 The Key Laboratory of Urban Security and Disaster Engineering of the Ministry of Education, Beijing University of Technology, Beijing 100124, China2  
Footnote 1: [[https://www.mdpi.com/journal/applsci](https://www.mdpi.com/journal/applsci)]([https://www.mdpi.com/journal/applsci](https://www.mdpi.com/journal/applsci))  
Footnote 2: [[https://www.mdpi.com/journals/pdf/12/](https://www.mdpi.com/journals/pdf/12/)]([https://www.mdpi.com/journals/pdf/12/](https://www.mdpi.com/journals/pdf/12/))  
divisional lifting overall tensioning method. The application of this method during construction avoids large member displacement, thus improving the safety of construction. [PERSON] et al. [4] investigated the effect of the initial cable length error in the prestressing state on the sensitivity of prestressed cables to length error. By controlling the length error, the prestress level during cable tensioning was effectively improved. [PERSON] et al. [5] proposed a joint-square double-brace structure to improve the force performance of the spatial structure and derived a formula for calculating the prestressing of the members of the structure under their self-weight, which provided theoretical support for the stability verification of the structure during the construction process. [PERSON] et al. [6] studied a single-story saddle-shaped cross-cable network without an inner ring. By studying the nonlinear analysis of the forces of the structure based on the raw-dead unit method, the structural resistance to the continuous collapse of the inner-loop cable network was effectively improved. [PERSON] et al. [7] used the response surface method and Monte Carlo method to calculate the structural reliability index and obtain the effect of tensioning cable relaxation at different locations on structural reliability, which allows the calculation of prestress loss in spatial structures and provides a basis for the safety assessment of structures. [PERSON], [PERSON]. et al. [8] proposed equations to estimate the joint stiffness and energy dissipation reduction of the system by analyzing it for two time periods, during and after the application of prestress. [PERSON] et al. [9] investigated the effect of temperature variation on the safety performance of cable truss structures and cables. [PERSON] et al. [10] derived the damage accumulation process of a cable system under normal loading and established a theoretical model for the fatigue life of a cable considering load redistribution. [PERSON] et al. [11] conducted a theoretical analysis and experimental study on the sudden breakage of cables in tensioned monolithic structures, pointing out that severe cases can cause a continuous collapse of the tensioned monolithic structure. There are several shortcomings in the component sensitivity discrimination and safety performance assessment of prestressed steel structures in the above studies. (i) The safety assessment of structures relies on data collected by field sensors, resulting in insufficient accuracy of structural performance analysis. (ii) The damage level of the structure cannot be displayed visually, resulting in insufficient information for structural performance analysis. With the development of the new generation of information technology and the promotion of industrial information systems, the application of technologies such as Digital twins (DTs) to engineering construction has become an increasingly researched topic [12]. Applying DTs to engineering practice can significantly improve the accuracy and intelligence of structural performance analysis. DT technology is a technique that simulates the state and behavior of physical entities portrayed in a dynamic virtual model with high fidelity [13].