Geotekstil Donatılı İstinat Duvarı Deplasman Davranışının Arazi Model Çalışmaları ile Belirlenmesi

Ön cephe elemanları, tüm dolgu yüzeyini kaplayan geotekstil donatılar ve dolgu malzemesi kullanılarak oluşturulan istinat duvarları, uygulama süresinin kısalığı, uygulama kolaylığı, estetik ve ekonomik oluşları nedeniyle yaygın olarak tercih edilmektedir. Bu çalışma kapsamında, teorik tasarım esaslarına dayalı dizayn edilmiş olan 3 metre yüksekliğindeki bir geogrid donatılı istinat duvarı, arazide modellenmiş ve basınç ölçerler, yatay deplasman ölçerler ve gerinim pulları ile enstrümante edilmiştir. Duvar, dolgu malzemesi üst yüzeyinden uygulanan sürşarj yüküyle aktif deformasyona zorlanmıştır. Deneyler sonucunda, duvarda oluşan yatay yer değiştirmeler ile donatılara gelen çekme gerilmeleri belirlenmeye çalışılmıştır.

Anahtar Kelimeler:

Geotekstil donatılı duvar, Arazi modeli, Yatay deplasmanlar

The Determination of Displacement Behavior of Geotextile Reinforced Earth Wall with Field Model Studies

Geotextile reinforced retaining walls, which are formed by covering all facing elements with, geotextile reinforcements and filling materials, are widely preferred due to duration, easiness, aesthetical, and economical advantages. In this study, geotextile reinforced retaining wall having a height of 3m was modelled and instrumented with pressure cells, horizontal displacement gauges and strain gages at the field. The wall was forced to actively deform by the applied surcharge load from the top surface of the backfill. As a result of the field tests, horizontal displacements on the wall and tensile stresses on the reinforcements were tried to be determined.

Keywords:

Geotextile reinforced earth wall Field model, Horizontal displacements, Tensile stresses,

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