## 2 Construction of a DTs Framework for Sensitivity Discrimination
### Capture of Twin Information
The state of the structure refers to  
Figure 1: Intrinsic relationship of basic influencing factors of safety performance of prestressed steel structures during tensioning. all the forms of the structure and its materials, and the state of the structure is influenced by the mechanical properties of the structure. Based on the mechanical properties of the cables, the sensitivity of the mechanical parameters at each point can be discerned, and the reliability of the structure can be assessed. The key elements in the analysis of prestressed steel structures during tensioning are the mechanical property indices, such as cable force (\(C_{f}\)), deflection (\(\omega\)), stress (\(\delta\)), strain (\(\varepsilon\)), and crack (\(C\)), which are closely related to the reliability of the construction process of the structure. Multidimensional Modeling for Intelligent Discrimination of Sensitivity to Mechanical Parameters of Cables  
In this study, the structural information of cable tensioning is derived from the finite element model of the structure, which is highly integrated with each construction element of the prestressed steel tensioning process and contains sufficient twin data to support the analysis of the sensitivity of the member mechanical parameters. This allows an intelligent analysis of the safety performance of structures. Moreover, finite element analysis has been widely used as a better mechanical simulation tool in the structural construction industry [29]. The twin information is divided into two categories based on the analysis of the information that needs to be captured for tension safety assessment: the action to which the structure is subjected and the mechanical properties of the structure. These are expressed by Equation (1) and Equation (2). As important simulation information for the twin model, the action on the structure (\(S\)), and the mechanical properties of the structure (\(R\)) are expressed specifically as:  
\[S=(I_{e},\,W_{l},\,T_{e}) \tag{1}\]  
\[R=(C_{f},\,\omega,\,\delta,\,\varepsilon,\,C) \tag{2}\]  
In Equation (1), \(L_{e}\) denotes the member length errors, \(W_{l}\) denotes the wind load effects, and \(T_{e}\) denotes the temperature effects. In Equation (2), \(C_{f}\) denotes the cable force, \(\omega\) denotes deflection, \(\delta\) denotes stress, \(\varepsilon\) denotes strain, and \(C\) denotes a crack. During the creation of the twin model, the action to which the structure is subjected and the mechanical properties of the structure are collected in real time using sensors. At the same time, a virtual model of the real structure is created during the finite element analysis. In the virtual model, the twin data of the effect of the structure and the mechanical properties of the structure are simulated by setting the corresponding working conditions. This enables the twin simulation of the realized tensioning process and establishes a model basis for the intelligent discrimination of the sensitivity of the mechanical parameters of the prestressed cables driven by the DTs. This in turn provides a basis for the analysis of the safety performance of structure construction. A multidimensional model for the intelligent discrimination of the sensitivity of the mechanical parameters of the cables is represented by Equation (3). The multidimensional model consists of five dimensions, expressed as follows:  
\[DTM=(S_{pr},\,S_{vm},\,L_{dp},\,L_{flu},\,C_{n}) \tag{3}\]  
In Equation (3), DTM denotes a multidimensional model for the intelligent discrimination of the sensitivity of the mechanical parameters of the cables, \(S_{pr}\) denotes the physical structure entity, \(S_{vm}\) denotes the virtual structure model, \(L_{dp}\) denotes twin data processing layer, \(L_{flu}\) denotes the functional application layer, and \(C_{n}\) denotes the connection between the components. The multidimensional twin model enables the simulation and mapping of realistic tensioning processes.