A method, apparatus, and medium for a combined design of a ribbed stainless steel reinforced low-carbon ultra-high performance concrete structure

Abstract

The application discloses a combined design method, equipment and medium of a ribbed stainless steel reinforced low-carbon ultra-high performance concrete structure, and relates to the technical field of engineering structure design. The method comprises the following steps: first, a reinforced concrete center pull-out test piece with multiple parameters as variables is prepared, and the size is measured; basic mechanical properties are determined through a material property test; the equipment is used to pull out the steel bar to determine the bond stress and the slip amount, and then the average bond stress is calculated; then, the existing formula is corrected and fitted to obtain the ultimate bond stress, a critical anchorage length formula is constructed, the critical anchorage length is derived, and a constitutive model is obtained by analyzing and fitting the bond stress-slip curve; finally, the structure is designed according to the ultimate bond stress, the critical anchorage length and the constitutive model. Through the center pull-out test of the austenitic stainless steel bar and the low-carbon UHPC, the application establishes the calculation formula of the bond strength and the critical anchorage length and the slip constitutive model between the two, and provides a theoretical basis for engineering practice.

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