OPERATING CONDITION AND RECONSTRUCTION OF A SMALL REINFORCED CONCRETE FOUR-HINGED BRIDGE

Abstract

slab bridges were massively built on public roads on lightweight supports of the systemofengineerM.O.Slovinsky.

This paper presents an example of the technical condition of such a bridge after more than 50 years of its operation and design solutions for reconstruction for further use. Design solutions for the reconstruction of this bridge are developed on the basis of research and development GNDL-88 oftheNationalUniversity "LvivPolytechnic".Themaintaskistobringtheoperationalindicatorsofthebridge - carryingcapacity, throughput, safetyandcomfortofmovementinaccordancewiththerequirementsofthecurrentdesignstandardsofnewbridges.

Expansionofthespanstructureofthedesigndevelopedin GNDL-88, a monolithicreinforcedconcreteoverheadslabwithcanineoverhead, combinedwithspecialanchorswithslabsoftheexistingspanstructure.

Forstrengtheningandprotectionofthesideslopeoftheembankmentandroadbedofthestream, a slopeprotectiontypereinforcementstructurefilledwithlargenaturalstonesisprovided.