THE METHOD OF NUMERICAL MODELING FOR EXISTING RC COMPONENTS BASED ON MATERIAL DEGRATION

Zheng Shansuo; Yang Wei; Qin Qing; Tian Wei

doi:10.13204/j.gyjz201501019

Volume 45 Issue 1

Mar. 2015

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Wang Shiying, Wang Xiaoping. BEARING CAPACITY RESEARCH ON ARCHED CORRUGATED STEEL ROOF WITH UNEQUAL ALTITUDE SUPPORT[J]. INDUSTRIAL CONSTRUCTION, 2007, 37(5): 100-102. doi: 10.13204/j.gyjz200705025

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Zheng Shansuo, Yang Wei, Qin Qing, Tian Wei. THE METHOD OF NUMERICAL MODELING FOR EXISTING RC COMPONENTS BASED ON MATERIAL DEGRATION[J]. INDUSTRIAL CONSTRUCTION, 2015, 45(1): 100-105. doi: 10.13204/j.gyjz201501019

Wang Shiying, Wang Xiaoping. BEARING CAPACITY RESEARCH ON ARCHED CORRUGATED STEEL ROOF WITH UNEQUAL ALTITUDE SUPPORT[J]. INDUSTRIAL CONSTRUCTION, 2007, 37(5): 100-102. doi: 10.13204/j.gyjz200705025

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THE METHOD OF NUMERICAL MODELING FOR EXISTING RC COMPONENTS BASED ON MATERIAL DEGRATION

doi: 10.13204/j.gyjz201501019

Publish Date: 2015-01-20

Abstract

Abstract

Based on finite element program ABAQUS，regarding RC multi-age components as research object，the unit C3D8R and unit T3D2 were used to simulate the mechanical behavior of concrete and reinforcement，and the superiority of exponential damping friction model for handling with the problem of contact between corrosion reinforcement and concrete was obviously exhibited，then the Hsich-Ting-Chen strength criterion was taken as concrete failure criterion. The loss of the cross sectional area of reinforcement bars，reduction of the cover and core concrete strength were modified by the single-factor time-dependent corrosion rate. Considering the cracking and spalling in the compressed concrete of compression zone caused by reinforcement corrosion，the modified compressionfield (MCF) was used to predict the time-dependent compressed concrete strength. Finally the modified material constitutive models of corroded reinforcement，concrete and bond-slip were provided. Considering the data of multiage RC component under low frequency cyclic loading，numerical model theory for corroded RC component mentioned above was proved to be reliable，and the achievements can provide a feasible and effective numerical model for the existing RC structures.
- multi-age,
- corroded RC component,
- numerical model theory,
- exponential damping friction model,
- ABAQUS program

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