Intelligent composite bar and concrete member operation and maintenance method applying intelligent composite bar

Abstract

The invention discloses an intelligent composite bar and a concrete member operation and maintenance method applying the intelligent composite bar, and relates to the field of concrete member operation and maintenance. The intelligent composite bar is characterized in that a groove with a specific depth is formed in an inner core steel bar; an optical fiber coated with a polyethylene protective sleeve is embedded in the groove; the outer side of the inner core steel bar embedded with the optical fiber is wrapped with a GFRP layer with a first set thickness; and the outer side of the GFRP layer is wrapped with a CFRP layer with a second set thickness. The concrete member operation and maintenance method applying the intelligent composite bar comprises the steps that the target bearing capacity, the target ductility coefficient, the initial structure parameters and the cross section area ratio of a concrete member are determined; and the total cross-sectional area, the optimal cross-sectional area ratio, the optimal structural parameters and the optimal current density of the foundation steel bars are obtained through continuous correction, and concrete members are constructed and cathodic protection is implemented by using the foundation steel bars. The intelligent composite bar is obtained by improving a common steel bar structure, and effective operation and maintenance of a concrete member are completed by applying the intelligent composite bar.

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