受损混凝土结构承载力能力研究

Research on bearing capacity of damaged concrete structure

分析了混凝土碳化、保护层厚度变化、钢筋锈蚀、混凝土强度变化对极限承载力的影响,并以某结构中的一钢筋混凝土简支梁为例,在考虑以上四种损伤的情况下,运用有限元软件ANSYS计算其抗弯极限承载力,并与完好状态下的极限承载力进行对比,从而为受损混凝土结构的后期管理以及加固维修提供理论依据。

The paper analyzes the influence of the concrete carbonation,the changes of thickness of protection layer,the reinforced corrosion,and changes of concrete strength on the ultimate bearing capacity,adopts the finite element software ANSYS to calculate the bending ultimate bearing capacity of the structure by taking the simply supported beam of the reinforced concrete of some structure as the example and considering the mentioned four damages,and compares its ultimate bearing capacity with the one in the excellent status,so as to provide the theoretic reference for the later management of the damaged concrete structure and its maintenance.