Experimental Study on Bearing Capacity of Corroded Reinforced Concrete Arch Considering Material Degradation

Xin, Jingzhou; Wang, Jieyun; Liu, Zengwu; You, Xing; Zhou, Jianting

doi:10.3389/fmats.2022.847193

Cited by 3 publications

(1 citation statement)

References 26 publications

(27 reference statements)

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“…In this vein, Ma et al [12] explored the influence of rusting and expansion on the load-bearing capabilities and failure patterns of RC arches post-rust-loading. Xin et al [13] chose the RC arch as their focal point, designed an RC bare arch test, and studied the damage evolution of arch ribs under rust-induced expansion.…”

Section: Introductionmentioning

confidence: 99%

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

Tian,

Cai,

Shi

et al. 2023

Applied Sciences

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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.

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Section: Introductionmentioning

confidence: 99%

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

Tian,

Cai,

Shi

et al. 2023

Applied Sciences

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Mechanical‐performance deterioration of RC segment of shield tunnel under high corrosion degree and the transformation of eccentric‐failure mode

Zhang,

2024

Structural Concrete

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Reinforcement corrosion in shield tunnel segments has an important impact on the structure's bearing capacity and failure mode. Generally, a shield tunnel structure is under small eccentric compression, but if the reinforcement corrosion develops sufficiently, then a transition occurs from small to large eccentric load state, thereby lowering the structural bearing capacity and endangering the safety of tunnel operation. In the study reported here, based on the compressive bending load characteristics of the shield lining structure, corrosion test columns with small eccentric loading were designed to simulate the actual force state of the tunnel lining, and the whole evolution process of their mid‐span strain, ultimate bearing capacity, and cracks under different corrosion degrees was analyzed. With increasing corrosion, the bearing capacity, concrete strain, and depth of the compressive zone of a test column decrease more and more rapidly, and at the maximum corrosion degree of 68.32%, the maximum reduction of bearing capacity is 53.23%. The tests show that the failure mode of a test column with high corrosion degree (≥46.25%) is transformed from small to large eccentric failure. Based on theoretical analysis of the normal section bearing capacity of reinforced concrete flexural members, a theoretical method is proposed for calculating the critical corrosion degree for the tunnel lining structure to transform from small to large eccentric failure. The theoretical calculation method is verified against finite‐element calculations, and the present research results offer theoretical support for the durability design and safety evaluation of shield tunnel lining structures.

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Sliding connectors for cyclic construction of steel-UHPC composite truss arch bridges: design method and feasibility study

He,

Shao,

et al. 2024

Engineering Structures

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Experimental Study on Bearing Capacity of Corroded Reinforced Concrete Arch Considering Material Degradation

Cited by 3 publications

References 26 publications

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

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

Mechanical‐performance deterioration of RC segment of shield tunnel under high corrosion degree and the transformation of eccentric‐failure mode

Sliding connectors for cyclic construction of steel-UHPC composite truss arch bridges: design method and feasibility study

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