ارزيابي عملكرد ديوار حائل خاك مسلح با تسليح‌كننده‌هاي مورب، رويه شيب‌دار و مهار تسليح‌كننده‌ها

Evaluation of Performance Reinforced Soil Retaining Wall with Oblique Reinforcements, Slope Facing and Reinforcements Anchor

با توجه به مزاياي ديوارهاي حائل خاك مسلح به ژئوسينثتيك، استفاده از اين ديوارها در طرح هاي عمراني طي سه دهه گذشته افزايش قابل توجهي يافته است. براي طراحي بهينه اين ديوارها لازم است عملكرد آنها در هندسه و شرايط تسليح مختلف مورد مطالعه و ارزيابي قرار گيرد. در اين پژوهش تاثير شيبداري رويه ديوار، تسليح مورب و مهار شده بر عملكرد ديوار به صورت تجربي مورد بررسي و مطالعه قرار گرفته است. در اين راستا در مجموع 14 مدل ديوار در مقياس آزمايشگاهي ساخته شد و عملكرد آن ها تحت بارگذاري استاتيكي مورد ارزيابي قرار گرفت. نتايج حاصل از بررسي هاي تجربي نشان داد كه با شيب دار كردن رويه به سمت خاكريز، تغييرشكل جانبي رويه ديوار كاهش مي يابد. به علاوه استفاده از لايه هاي تسليح مورب، باعث كاهش بيشتر تغييرشكل افقي مي شود. بر مبناي نتايج به دست آمده مشخص شد كه اجراي ديوار با رويه ي 80 درجه نسبت به افق و متمايل به سمت خاكريز و تسليح با كجي 10 درجه نسبت به افق باعث بهبود قابل توجهي در عملكرد ديوار مي گردد به شكلي كه حداكثر تغييرشكل افقي رويه ديوار تحت شرايط بار مجاز تا 28 % كاهش مي يابد. به علاوه معلوم شد كه مهار نمودن انتهاي تسليح در خاكريز تأثيري مفيد ولي محدود بر عملكرد ديوار دارد.

Due to the advantages of reinforced soil retaining walls, the using of type of the walls has increased in civil projects over the past three decades. One of the reinforced soil applications is the construction reinforced soil retaining walls. The major advantages of the reinforced soil walls are their flexibility and absorbency of deformations. Regarding experiences derived from previous studies, it attempted to investigate the effect of facing slope, oblique reinforcements and reinforcements anchoring on the performance retaining wall by experimental. In this study, 14 models of the walls were constructed. Results of the study provide evidence that horizontal deformation of the wall facing decreased with decreasing of the facing slope. Moreover, with increasing of the reinforcements slope the horizontal deformation reduced. Results showed that reinforced soil wall with oblique reinforcements of 10 degree and facing slope of 80 degree reduce the maximum horizontal deformation of the facing by 20%.Due to the advantages of reinforced soil retaining walls, the using of type of the walls has increased in civil projects over the past three decades. One of the reinforced soil applications is the construction reinforced soil retaining walls. Regarding experiences derived from previous studies, it attempted to investigate the effect of facing slope, oblique reinforcements and reinforcements anchoring on the performance retaining wall by experimental. In this study, 14 models of the walls were constructed. Results of the study provide evidence that horizontal deformation of the wall facing decreased with decreasing of the facing slope. Moreover, with increasing of the reinforcements slope the horizontal deformation reduced. Results showed that reinforced soil wall with oblique reinforcements of 10 degree and facing slope of 80 degree reduce the maximum horizontal deformation of the facing by 20%.Due to the advantages of reinforced soil retaining walls, the using of type of the walls has increased in civil projects over the past three decades. One of the reinforced soil applications is the construction reinforced soil retaining walls. The major advantages of the reinforced soil walls are their flexibility and absorbency of deformations. Regarding experiences derived from previous studies, it attempted to investigate the effect of facing slope, oblique reinforcements and reinforcements anchoring on the performance retaining wall by experimental. In this study, 14 models of the walls were constructed. Results of the study provide evidence that horizontal deformation of the wall facing decreased with decreasing of the facing slope.Due to the advantages of reinforced soil retaining walls, the using of type of the walls has increased in civil projects over the past three decades. One of the reinforced soil applications is the construction reinforced soil retaining walls. Results of the study provide evidence that horizontal deformation of the wall facing decreased with decreasing of the facing slope. Moreover, with increasing of the reinforcements slope the horizontal deformation reduced. Results showed that reinforced soil wall with oblique reinforcements of 10 degree and facing slope of 80 degree reduce the maximum horizontal deformation of the facing by 20%