An Experimental study on the performance of geotextile tubes in beach nourishment applications

Download

index.pdf

Date

2019

Author

Işık, Emrecan

Metadata

Show full item record

This work is licensed under a Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License.

Item Usage Stats

195
views

248
downloads

In this study, performance of submerged geotextile tubes as toe protection for the beach nourishment applications was investigated through physical model tests. Crossshore sediment transport volumes and sand protection performances of geotextile tubes were evaluated based on the measured post-storm beach profile changes and recessions or progressions of shoreline. In the experiments, the effects of fill material sediment grain sizes, fill angles, negative freeboards of geotextile tubes, and wave steepnesses were investigated. According to the profile measurements, the increase in the significant wave height and wave steepness were found as augmentative factors of beach erosion. It was observed that the increase in sand grain diameter reduces the sediment movement in nearshore, while steepening of the fill angle strengthened the effect of the erosive and accretive waves. It was also observed that using tubes as toe protection in beach nourishment applications in wave breaking zone did not have positive effects on recessions or progressions, instead geotextile tubes placed outside of breaking zone as submerged breakwaters worked more efficient.

Subject Keywords

Beach nourishment., Beach Nourishment, Geotextile Tube, Sediment Transport, Coastal Morphology, Accretive/Erosive Waves.

URI

http://etd.lib.metu.edu.tr/upload/12624333/index.pdf
https://hdl.handle.net/11511/44213

Collections

Graduate School of Natural and Applied Sciences, Thesis

Suggestions

OpenMETU
Core

Kum Beslemesi Uygulamalarında Jeotekstil Tüplerin Kullanımı Üzerine Fiziksel Model Deneyleri Işık, Emrecan; Baykal, Cüneyt (null; 2018-11-03) In this study, performance of submerged geotextile tubes as toe protection for the beach nourishment applications was investigated through physical model experiments. Cross-shore sediment transport volumes and sand protection performances of geotextile tubes were evaluated based on the measured post-storm beach profile changes and recessions or progressions of shoreline. In the experiments, the effects of sediment grain sizes, fill angles, negative freeboards of geotextile tubes, and wave steepnesses were i...
A comparative study on biodegradation and mechanical properties of pressureless infiltrated Ti/Ti6Al4V-Mg composites ESEN, ZİYA; Butev, Ezgi; Karakas, M. Serdar (2016-10-01) The mechanical response and biodegradation behavior of pressureless Mg-infiltrated Ti-Mg and Ti6Al4V-Mg composites were investigated by compression and simulated body fluid immersion tests, respectively. Prior porous preforms were surrounded uniformly with magnesium as a result of infiltration and the resultant composites were free of secondary phases and intermetallics. Although the composites' compressive strengths were superior compared to bone, both displayed elastic moduli similar to that of cortical b...
An experimental study into bearing of rigid piled rafts under vertical loads Türkmen, Haydar Kürşat; Ergun, Mehmet Ufuk; Department of Civil Engineering (2008) In this study, the load bearing behavior of piled raft foundations is investigated performing laboratory and field tests. Piled raft foundation of a multi storey building was also instrumented and monitored in order to study the load sharing mechanism of piled raft foundations. A small reinforced concrete piled raft of 2.3 m square supported by four mini piles at the corners was loaded and contribution of the raft support up to 41 % of the total load was observed. The soil was stiff fissured Ankara clay wit...
Numerical analyses of load tests on model foundations in dry sand Unsever, Y. S.; Matsumoto, T.; Özkan, M. Yener (2015-01-01) In this study, a series of vertical and cyclic horizontal load tests on 3-pile piled raft model were carried out in dry sand to investigate the piled raft behaviour under combined loads. Also, numerical modelling of experiments were carried out by using FEM software, PLAXIS 3D. Hardening soil model was employed to model the sand, and elastic model was used for the pile and the raft. Soil parameters were estimated from consolidated drained triaxial tests carried on the sand samples and pile parameters were e...
Analysis of techniques to limit saltwater intrusion in coastal aquifers Başdurak, Nüvit Berkay; Motz, Louis H. (2007-01-01) In this study, saltwater intrusion in coastal aquifers and prevention techniques were investigated using a new computer model, the Sea Water Intrusion (SWI) package (Bakker and Schaars, 2005), which simulates three-dimensional regional seawater intrusion in coastal multi-aquifer systems. Prevention methods consisting of injection wells, extraction wells, a combination of injection and extraction wells, and a subsurface barrier were evaluated as means of controlling saltwater intrusion by using SWI to simula...

Citation Formats

E. Işık, “An Experimental study on the performance of geotextile tubes in beach nourishment applications,” Thesis (M.S.) -- Graduate School of Natural and Applied Sciences. Civil Engineering., Middle East Technical University, 2019.