교량의 장기성능 예측을 위한 디지털 트윈모델 정의

Definition of Digital Twin Models for Prediction of Future Performance of Bridges

Abstract

Future performance prediction of bridges is challenging task for structural engineers. Well-organized information from design, construction and operation stages is essential for the assessment of structures. Digital twin model is a new concept to realize more reliable data platform for management of infrastructures. Damage history including degradation of material, cracking, corrosion, etc. needs to be accumulated in the digital model. The digital model is linked to the analysis model for the assessment of structural performance considering changed mechanical properties of structural components. In this paper, initial definition digital twin model of a PSC-I girder bridge is proposed.

Figure 1. Inventory of a PSC I girder bridge

Figure 2. Code definition of damages

Figure 3. Network-level data collection and uses

Figure 4. Code system of PSC-I girder bridge

Figure 5. Damage evaluation of a PSC I girder

Figure 6. Reality model definition

Figure 7. Prediction of concrete slab damages

Figure 8. Damage recording on a digital model

Figure 9. New BMS with open data model

Table 1. Definition of code numbers

Table 2. Details of the code system

Table 3. Definition of code for inventory

Table 4. Code system of damages in PSC I-girder bridges