Simulation of Test Arch Based on Concrete Damage Plasticity Model and Damage Evolution Analysis

• Published in: Applied sciences 2023-10, Vol.13 (20), p.11239
• Main Authors: Tian, Zhongchu, Cai, Yue, Shi, Hongtao, Wang, Guibo, Zhang, Zujun, Dai, Ye, Xu, Binlin
• Format: Article
• Language: English
• Subjects: Analysis; Bridges; Concrete; concrete damage plasticity model; Construction; Crack initiation; damage evolution; initial damage; Reinforced concrete; reinforced concrete arch bridge; Simulation; Simulation methods; structural failure
• ISSN: 2076-3417; 2076-3417
• DOI: 10.3390/app132011239

In light of the limited research on latent damages during the construction of large-span suspension arches, this study introduced a method to simulate structural damage utilizing random porosity. Initially, based on data from real-world engineering projects, the most susceptible areas within the arch structure were pinpointed. Subsequently, multiple test arch simulation models were constructed. Employing Python, commands for random porosity were implemented within ABAQUS and distinct mesh modules were devised to depict structures under varying degrees of damage. The current investigation delved into the structural responses of these susceptible areas under different damage rates, shedding light on damage progression patterns. Notably, our findings demonstrated that concealed damages on the top plate of the arch foot profoundly influenced structural integrity, whereas damages at the arch hance were comparatively minimal and predominantly manifest at the arch base. The pronounced localized damage at both the arch base and hance initiated and intensified at sectional corners, necessitating enhanced anti-crack measures in these regions. Moreover, depending on the stresses of the arch structure, diverse reinforcement strategies could be employed, optimizing the balance between load-bearing efficiency and cost considerations.