Stabilizacija klizišta na državnoj cesti DC31 u mjestu Laz Bistrički

master's thesis

• Title (english): Landslide stabilization on a state road DC31 in Laz Bistrički
• Author: Josipa Danjo
• Mentor: Mario Bačić (mentor)
• Committee member: Mario Bačić (predsjednik povjerenstva)
• Committee member: Marijan Car (član povjerenstva)
• Committee member: Tomislav Ivšić (član povjerenstva)
• Granter: University of Zagreb; Faculty of Civil Engineering; (Geotechnical Engineering); Zagreb
• Defense date and country: 2020-09-24, Croatia
• Scientific / art field, discipline and subdiscipline: TECHNICAL SCIENCES; Civil Engineering; Geotechnology

Abstract

Na državnoj cesti DC29, na stacionaži 33+820, uočen je problem klizanja materijala s nizbrežne strane ceste. Čelo klizišta zahvatilo je donji ustroj prometnice te je bilo potrebno stabilizirati klizište kako bi se promet mogao nastaviti sigurno odvijati.
Izvedba ugrađene potporne konstrukcije je metoda stabilizacije koja je najviše prikladna za predmetno klizište zbog geometrije
problema. Odabrana je ugradnja armiranobetonske pilotne stijene s naglavnom gredom, nakon čega je predviđen iskop materijala klizišta na nizbrežnoj strani ceste i zasipavanje tog dijela koherentnim materijalom. Prvo su provedeni geotehnički istražni radovi i inženjerskogeološki radovi, analiza i interpretacija njihovih rezultata te konačno definiranje geotehničkog profila tla. Nakon toga provedeni su geotehnički proračuni numeričkim analizama – naponsko- deformacijskom analizom i analizom stabilnosti za odabrane proračunske situacije. Naponsko- deformacijskom analizom dobivene su rezne sile za koje su se dimenzionirali pilot i naglavna greda, a analizom stabilnosti su dobiveni zadovoljavajući faktori sigurnosti. Na kraju su prikazani tehnički uvjeti izvedbe pilotne stijene, iskopa i nasipavanja te program kontrole kvalitete.

Abstract (english)

Instability occured on the right side of the state road DC29 at chainage 33+820. Landslide crown affected road bed and consequently it was necessary to stabilize the landslide to provide safely road traffic. Due to geometry of problem, construction of embedded retaining strictures is the most suitable stabilization method at this location.Chosen solution includes installation of pile wall with head beam, followed by excavation of landslide material and backfilling. Geotechnical investigation works and engineering geological investigation were initialy conducted, followed by analysis and interpretation of investigation and defining geotechnical soil profile. Furthermore, geotechnical numerical – stress-strain analysis and the stability analysis for the selected design situations were implemented. From stress-strain analysis, internal forces were used for dimensioning of pile wall and head beam. Sliding stability analysis gave satisfactory factors of safety. Finally, technical conditions of construction of pile wall, excavation and backfilling as well as quality control works are displayed.

• Keywords: klizište; pilotna stijena; naponsko-deformacijska analiza; analiza stabilnosti
• Keywords (english): landslide; pile wall; stress-strain analysis; stability analysis
• Language: croatian
• URN:NBN: urn:nbn:hr:237:901755
• 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: 2023-06-07 10:03:55