A method for assembling a first tensioning prestressed steel strand of a concrete light component

Abstract

The application relates to a bundle arrangement method of a concrete light component pre-tensioned prestressed steel strand, which comprises the following steps: calculating a dead load bending moment in a prefabrication stage, calculating a frequently-encountered combined bending moment in an operation stage, calculating the upper edge and lower edge stresses of a concrete component corresponding to the two bending moments, superimposing the stress generated by a top steel bundle, calculating the upper edge and lower edge stresses of the concrete component generated by an i-th bottom steel bundle, determining the number n of the i-th bottom steel bundle i , determining the length L of an i+1-th bottom steel bundle i+1 ; if the calculation does not converge, one top steel bundle is added, and the upper edge and lower edge stresses of the concrete component generated by the top steel bundle are calculated. Compared with the prior art, the application embeds the reasonable arrangement of the top steel bundle into a steel bundle arrangement process, realizes automatic optimization calculation, and provides a convenient method for the design of the concrete light component.

Images