现役钢筋混凝土受弯构件残余承载力计算模型

本文基于钢筋混凝土结构理论及锈蚀钢筋混凝土构件的力学性能的变化规律,建立了钢筋混凝土构件残余承载力的计算模型,并通过实验验证了计算模型的有效性.模型的物理概念明确、简单实用,可供现役混凝土结构的耐久性评估及维修决策参考.

Computation model with remaining bearing capacity of reinforced concrete bended members

Along with the descend of lasting function, the remaining beating capacity of reinforced concrete structure reduces. It is appraising remaining beating capacity of reinforced concrete members that play important role in the lasting function analyses and service life prediction. This paper set up an computation model with remaining bearing capacity of reinforced concrete bended members in view of reinforced concrete structure theory and eroded reinforced concrete mechanics capability. Chloride - induced corrosion of reinforcing bars is the leading cause of deterioration of reinforced concrete structures in marine envirotunent. In this paper the key factors affecting the remaining bearing capacity, especially the chloride were taken into account. Experiments have proved that this computation model is effective, applied and simple. This computation model has specific physics concepts and it can provide references for the appraisable with wear- life of reinforced concrete structures and servicing decision - making.