Abstract
Concrete creep is defined as deformation over time under a sustained load. When a structure is subjected to additional actions such as corrosion, damage to its components can occur, leading to a deterioration in performance. The structure then develops a long-term deformation known as secondary creep, which is greater than the creep deformation that occurs under sustained loads alone. The problem of secondary creep caused by corrosion of reinforcing steel, which is a common durability issue, is still not well understood. Corrosion-induced degradation, including partial loss of reinforcement, bond degradation and concrete cracking, exacerbates creep deformation by altering stress distribution and accelerating microcrack development. This coupled effect may lead to premature stiffness reduction and unpredictable long-term structural performance. To study the secondary creep law under corrosion damage more conveniently, this paper uses the numerical simulation method. Through Abaqus finite element analysis software, the creep calculation subroutine is written according to creep calculation theory and combined with the constitutive model of corroded reinforced concrete. This allows the secondary creep simulation and analysis of corroded beams to be carried out. The results indicate that a certain degree of corrosion damage can lead to secondary creep in the structure. The reinforcement constitutive model has a significant impact on the short-term stiffness of the beam, while the bond slip constitutive model has a greater impact on the long-term stiffness.
Keywords
concrete creep, corrosion damage, secondary creep, finite element.
DOI
10.5703/1288284318157
Recommended Citation
Guo, Hao; Liu, Wenbin; Zhang, Yixue; and Jin, Weiliang, "Simulation Analysis of Secondary Creep of Corrosion Damaged Reinforced Concrete Beams based on ABAQUS" (2025). International Conference on Durability of Concrete Structures. 6.
https://docs.lib.purdue.edu/icdcs/2025/cms/6
Simulation Analysis of Secondary Creep of Corrosion Damaged Reinforced Concrete Beams based on ABAQUS
Concrete creep is defined as deformation over time under a sustained load. When a structure is subjected to additional actions such as corrosion, damage to its components can occur, leading to a deterioration in performance. The structure then develops a long-term deformation known as secondary creep, which is greater than the creep deformation that occurs under sustained loads alone. The problem of secondary creep caused by corrosion of reinforcing steel, which is a common durability issue, is still not well understood. Corrosion-induced degradation, including partial loss of reinforcement, bond degradation and concrete cracking, exacerbates creep deformation by altering stress distribution and accelerating microcrack development. This coupled effect may lead to premature stiffness reduction and unpredictable long-term structural performance. To study the secondary creep law under corrosion damage more conveniently, this paper uses the numerical simulation method. Through Abaqus finite element analysis software, the creep calculation subroutine is written according to creep calculation theory and combined with the constitutive model of corroded reinforced concrete. This allows the secondary creep simulation and analysis of corroded beams to be carried out. The results indicate that a certain degree of corrosion damage can lead to secondary creep in the structure. The reinforcement constitutive model has a significant impact on the short-term stiffness of the beam, while the bond slip constitutive model has a greater impact on the long-term stiffness.
