Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Stability of Back-to-Back Mechanically Stabilized Earth Walls
Back-to back mechanically stabilized earth (BBMSE) walls are encountered in highway applications such as narrow ramps and turning lanes. However, available literature and design guidelines for BBMSE walls are limited. The objective of this paper is to discuss the stability of BBMSE walls with geosynthetic reinforcement using two-dimensional finite element modeling. The numerical model was validated against an instrumented large-scale test wall. The study was performed to investigate the effect of distance between BBMSE walls and reinforcement length on the failure mechanism, tensile forces in the reinforcement, and lateral earth pressure behind the reinforced zone. The results indicate that each of the back-to-back walls behave independently if the wall spacing to height ratio is more than one. When the ratio is less than one the two walls interact with each other and the earth pressure behind the wall decreases because the failure wedge behind the wall is not fully developed. Thus, the tensile forces in the geosynthetic reinforcement decrease with decreasing the spacing between walls. In very narrow walls, it was observed that the tensile forces decrease when using a single reinforcement layer compared to using overlapping layer.
Stability of Back-to-Back Mechanically Stabilized Earth Walls
Back-to back mechanically stabilized earth (BBMSE) walls are encountered in highway applications such as narrow ramps and turning lanes. However, available literature and design guidelines for BBMSE walls are limited. The objective of this paper is to discuss the stability of BBMSE walls with geosynthetic reinforcement using two-dimensional finite element modeling. The numerical model was validated against an instrumented large-scale test wall. The study was performed to investigate the effect of distance between BBMSE walls and reinforcement length on the failure mechanism, tensile forces in the reinforcement, and lateral earth pressure behind the reinforced zone. The results indicate that each of the back-to-back walls behave independently if the wall spacing to height ratio is more than one. When the ratio is less than one the two walls interact with each other and the earth pressure behind the wall decreases because the failure wedge behind the wall is not fully developed. Thus, the tensile forces in the geosynthetic reinforcement decrease with decreasing the spacing between walls. In very narrow walls, it was observed that the tensile forces decrease when using a single reinforcement layer compared to using overlapping layer.
Stability of Back-to-Back Mechanically Stabilized Earth Walls
El-Sherbiny, Rami (Autor:in) / Ibrahim, Eslam (Autor:in) / Salem, Abdelsalam (Autor:in)
Geo-Congress 2013 ; 2013 ; San Diego, California, United States
Geo-Congress 2013 ; 555-565
25.02.2013
Aufsatz (Konferenz)
Elektronische Ressource
Englisch
Stability of Back-to-Back Mechanically Stabilized Earth Walls
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