DETERMINATION OF WIND LOAD ON A TOWER CRANE ACCORDING TO GOST 1451-77 AND DBN V.1.2-2:2006

Abstract

The article examines the question of determining the wind load on a tower crane according to two normative documents: GOST 1451-77 "Hoisting cranes. Wind load. Norms and methods of determination" and DBN V.1.2-2:2006 "Loads and influences. Design standards". The methodology outlined in the first normative document does not take into account the changes that have taken place in the normative documentation of Ukraine over the past decades, particularly in the field of climatology. Thus, the zoning map of the territory of the former USSR according to the characteristic values of wind pressure, given in Appendix 3 to GOST 1451-77, does not coincide with the corresponding zoning map of Ukraine, which is given in DBN B.1.2-2:2006. Also, in the article, the task of comparing the wind load on the crane, calculated according to the two cited normative documents, was set. The calculation carried out for the non-working state of the tower crane with the specified parameters, installed in the third wind region of Ukraine, showed an approximate coincidence of the results (the error does not exceed 10-12%), however, the full equivalence of the calculation methods according to the two specified regulatory documents can be said only after additional research . In addition, DBN B.1.2-2:2006 can be used as an alternative standard when determining the wind load only in certain cases, since it does not contain recommendations for the calculation of the wind load on the tower crane in working condition and the wind load acting on the load.