INTEGRATED DURABILITY SIMULATION FOR REINFORCED CONCRETE STRUCTURS
This paper provides an introduction to life-span simulation and numerical approachto support the performance design processes of reinforced concrete structures. An integratedcomputational system is proposed for life-span simulation of reinforced concrete.Conservation of moisture,carbon dioxide,oxygen,chloride,calcium and momentum issolved with hydration,carbonation,corrosion,ion dissolution,damage evolution and theirthermodynamic/mechanical equilibrium. Coupled analysis of mass transport and damagemechanics associated with steel corrosion is presented for structural performance assessmentof reinforced concrete. Multi-scale modeling of micro-pore formation and transportphenomena of moisture and ions are mutually linked for predicting the corrosion ofreinforcement and volumetric changes. The interaction of crack propagation with corroded gelmigration can also be simulated. Two finite element codes,multi-chemo physical simulationcode (DuCOM) and nonlinear dynamic code of structural reinforced concrete (COM3) werecombined together to form the integrated simulation system. This computational system wasverified by the laboratory scale and large scale experiments of damaged reinforced concretemembers under static loads,and has been applied to safety and serviceability assessment ofexisting structures.
durability performance verification corrosion cracking mass transport reinforced concrete
Xuehui An Koichi Maekawa Tetsuya Ishida
School of Civil Engineering,Tsinghua University,PR China Department of Civil Engineering,University of Tokyo,Hongo 7-3-1,Tokyo 113,Japan
国际会议
The International Conference on Durability of Concrete Structures(2008年混凝土结构耐久性国际学术会议)
杭州
英文
64-78
2008-11-01（万方平台首次上网日期，不代表论文的发表时间）