Projekt sanacije kolničke konstrukcije autoceste A3, dionica Jankomir - Ivanja Reka

master's thesis

• Title (english): Highway A3, section Jankomir - Ivanja Reka pavement rehabilitation project
• Author: Simona Herceg
• Mentor: Tatjana Rukavina (mentor)
• Committee member: Maja Ahac (predsjednik povjerenstva)
• Committee member: Tatjana Rukavina (član povjerenstva)
• Committee member: Ivica Stančerić (član povjerenstva)
• Granter: University of Zagreb; Faculty of Civil Engineering; (Transportation Engineering); Zagreb
• Defense date and country: 2020-09-24, Croatia
• Scientific / art field, discipline and subdiscipline: TECHNICAL SCIENCES; Civil Engineering; Transportation

Abstract

U radu je analizirano stanje postojeće kolničke konstrukcije zaustavnog traka autoceste A3, dionica Jankomir – Ivanja Reka, ukupne dužine 24 472 m lijevi kolnik, odnosno 24 211 m desni kolnik. Opisana su vizualnim pregledom uočena oštećenja kao i provedeni istražni radovi. Na temelju rezultata istražnih radova i dostupnih terenskih podataka izrađene su dvije varijante sanacije postojeće kolničke konstrukcije pri čemu je predviđeno da će zaustavni trak postati namijenjen isključivo za teški promet. Prva varijanta sanacije predviđa zamjenu postojećih asfaltnih slojeva uz postupak hladne reciklaže nosivih slojeva, dok se u drugoj varijanti predviđa zamjena svih slojeva postojeće kolničke konstrukcije. Proračunom je za prvu varijantu određen sljedeći sastav kolničke konstrukcije ukupne debljine 68 cm: habajući sloj debljine 4 cm, vezni sloj debljine 7 cm, hladno reciklirani nosivi sloj debljine 17 cm i mehanički zbijeni nosivi sloj debljine 40 cm. Druga varijanta, također ukupne debljine 68 cm, sastoji se od sljedećih slojeva: habajući sloj debljine 4,5 cm, vezni sloj debljine 7 cm, nosivi sloj debljine 9,5 cm, cementom stabilizirani nosivi sloj debljine 20 cm i mehanički zbijeni nosivi sloj debljine 27 cm. Dimenzioniranjem dobivene varijante kolničkih konstrukcija su analizirane te je zaključeno da je prva varijanta (varijanta koja uključuje hladno reciklirani nosivi sloj) bolja u smislu mehaničke otpornosti i stabilnosti prema djelovanju prometnog opterećenja. Što se tiče ukupnih troškova za razdoblje od 20 godina, može se zaključiti kako je prva varijanta i u tom segmentu bolja, odnosno isplativija od druge varijante.

Abstract (english)

In thesis, the condition of existing pavement construction of the stop lane of the highway A3, section Jankomir - Ivanja Reka, with a total length of 24 472 m of left pavement and 24 211 m of right pavement.is analyzed. The damage observed by visual inspection as well as the conducted investigative works are described in thesis. Based on the results of the investigative works and available field data, two variants of rehabilitation for existing pavement construction were made, and it was taken into consideration that the stop lane will be intended exclusively for heavy traffic. The first variant of rehabilitation includes the replacement of the existing asphalt layers with the process of cold recycling of the base layers and in the second variant the replacement of all layers of the existing pavement construction is predicted. By the calculation for the first variant, pavement construction with a total thickness of 68 cm is made of: surface layer 4 cm thick, binder layer 7 cm thick, cold recycled base layer 17 cm thick and mechanically stabilized subbase layer 40 cm thick. The second variant, also 68 cm thick in total, consists of the following layers: surface layer 4.5 cm thick, binder layer 7 cm thick, base layer 9.5 cm thick, cement stabilized base layer 20 cm thick and mechanically stabilized subbase layer 27 cm thick. By dimensioning, the obtained variants of pavement structures were analyzed, and it was concluded that the first variant (a variant that includes cold-recycled base layer) is better in terms of mechanical resistance and stability to the action of traffic load. Regarding the total costs for a period of 20 years, it can be concluded that the first variant is better in this segment, i.e. more cost-effective than the second variant.

• Keywords: sanacija; kolnička konstrukcija; hladna reciklaža; dimenzioniranje; rekonstrukcija
• Keywords (english): rehabilitation; pavement construction; cold recycling; dimensioning; reconstruction
• Language: croatian
• URN:NBN: urn:nbn:hr:237:793347
• Study programme: Title: Civil Engineering; specializations in: Construction Management, Transportation Engineering, Geotechnical Engineering, Hydraulic Engineering, Structural Engineering, Construction Materials, Theory and Modeling of Structures; Course: Construction Management; Study programme type: university; Study level: graduate; Academic / professional title: magistar/magistra inženjer/inženjerka građevinarstva (magistar/magistra inženjer/inženjerka građevinarstva)
• Type of resource: Text
• File origin: Born digital
• Access conditions: Closed access
• Created on: 2023-06-05 09:15:44