| In recent years,the problems of the deterioration of the durability of concrete caused by corrosion of steel bars are becoming more and more prominent,and has also been paid attention to by academic institutions,scholars and technical personnel in various countries,and a large number of research papers on steel corrosion direction have been carried out.It is of great significance to study the deterioration of the durability of reinforced concrete and carry out safety analysis on the actual project,so as to reduce the loss of economic property and ensure the safety of people's lives and property.There are many factors that affect the bending performance of reinforced concrete members,including steel types,corrosion rate,axial force,concrete strength and so on.Ten reinforced concrete slab members designed in this paper are studied as follows:(1)The influence of reinforcement types on the performance of corroded reinforced concrete plate bending members.In this paper,the effect of plain round bars and ribbed bars on the bending performance of reinforced concrete slabs under different corrosion strength was studied by accelerated corrosion method.(2)The influence of concrete strength on the bending performance of corroded reinforced concrete wall.Design concrete strength is C20,C40,C60,the corrosion of reinforced concrete wall bending performance test,measurement and record of reinforced concrete wall bending bearing capacity,deflection,crack width and crack distribution form,etc.(3)The influence of different axial forces(N1,N2)on the bending performance of corroded reinforced concrete slabs.Through the analysis of the experimental data,the calculation method of flexural bearing capacity of reinforced concrete wall under the above factors is summarized,and the crack width,distribution pattern of corrosion crack and deflection of reinforced concrete wall are observed,so as to provide a basis for safety analysis of concrete structure with degraded durability. |
PDF Full Text Request