Ojačanje uspornih nasipa uz Trnavu geomrežama

master's thesis

• Title (english): Reinforcement by geogrids of the levee along the Trnava
• Author: Luka Rendulić
• Mentor: Lovorka Librić (mentor)
• Committee member: Danijela Jurić Kaćunić (predsjednik povjerenstva)
• Committee member: Lovorka Librić (član povjerenstva)
• Committee member: Meho-Saša Kovačević (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

Primjena geomreža može biti ekonomično te tehnološki i ekološki kompatibilno rješenje za poboljšanje mehaničke otpornosti i stabilnosti nasipa. Danas je na tržištu dostupan širok izbor geomreža, a dostupni proizvodi razlikuju se prema tehnologiji proizvodnje, veličini i obliku otvora, vlačnim svojstvima itd. Prilikom odabira geomreže za određeni projekt uobičajeno se razmatraju dva svojstva, veličina otvora i vlačna čvrstoća, a u novije vrijeme i omjer radijalne sekantne krutosti pri malim deformacijama. Ovim radom rješava se dionica uspornih nasipa uz Trnavu koje je potrebno ojačati geomrežama. Nasipi uz Trnavu započinju od spoja s glavnim murskim nasipom i završavaju kod cestovnog mosta koji vodi na stari GP Goričan. Duljina lijevog nasipa je 3.2 km, a desnog 3.3 km. Početne kote krune nasipa vežu se na glavni murski nasip, što je nivo 100 - godišnje velike vode Mure s nadvišenjem od jednog metra. Ojačanje uspornih nasipa izvoditi će se jednoosnim geomrežama TENSAR RE520. Analize procjeđivanja proračunavaju se u programu SEEP/W, analize stabilnosti u programu SLOPE/W gdje se gledaju statični i potresni uvjeti kod kojih koeficijent sigurnosti FS mora biti veći od 1 te analize slijeganja u programu SIGMA/W programskog paketa Geo-Studio. Navedene analize nasipa vršiti će se na desnim profilima nasipa 0+440, 1+460 i 2+460 te na lijevim profilima 1+040, 1+840 i 2+300. Profili su odabrani na temelju više kriterija. Kriteriji su bili maksimalna visina nasipa, maksimalni vodostaj, te relevantne geotehničke ili hidrauličke karakteristike tla.

Abstract (english)

The application of geogrids can be an economical and technologically and ecologically compatible solution for improving the mechanical resistance and stability of the levee. Today, a wide selection of geogrids is available on the market, and the available products differ according to production technology, size and shape of openings, tensile properties, etc. When selecting geogrids for a particular project, two properties are usually considered. radial secant stiffness at small deformations. This work solves the section of slow levees along Trnava that needs to be strengthened with geogrids. The levees along Trnava start from the junction with the main Mura levee and end at the road bridge leading to the old GP Goričan. The length of the left levee is 3.2 km, and the right 3.3 km. The initial elevations of the crown of the levee are connected to the main Mura levee, which is the level of 100 - year high water of the Mura with an overhang of one meter. Reinforcement of slow levees will be performed by single- axis geogrids TENSAR RE520. Leakage analyzes are calculated in the SEEP / W program, stability analyzes in the SLOPE / W program where static and seismic conditions are observed at which the FS safety factor must be bigger than 1, and settlement analyzes in the SIGMA / W program of the Geo-Studio software package. The mentioned analyzes of the levee will be performed on the right profiles of the levee 0 + 440, 1 + 460 and 2 + 460 and on the left profiles 1 + 040, 1 + 840 and 2 + 300. Profiles were selected based on multiple criteria. The criteria were maximum levee height, maximum water level, and relevant geotechnical or hydraulic soil characteristics.

• Keywords: usporni nasip; geomreže
• Keywords (english): enbankment; geonetwork
• Language: croatian
• URN:NBN: urn:nbn:hr:237:081752
• 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: 2023-06-12 07:06:57