Ocena wytrzymałościowa stali mostów historycznych w świetle badań nieniszczących

Abstract

Ocena wytrzymałościowa stali mostów historycznych w świetle badań nieniszczących AbstractTensile properties of steel in 30 bridges, determined in two ways, are presented. By the direct way, conducting destructive testing on 35 structural members from 22 bridges and by the indirect way -developing Brinell hardness testing to 41 members from 27 bridges. Twenty tested bridges were constructed in the second half of XIX century and the remaining ten were constructed in XX century. The strength assessment of historic steels is carried out taking into account the carbon content according to chemical analysis. Modified coefficients for easy estimation of a yield strength ReB are determined.