Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Prediction of Soil Reinforcement Loads in Mechanically Stabilized Earth (MSE) Walls
Proper estimation of soil reinforcement loads and strains is key to accurate design of the internal stability of geosynthetic and steel reinforced soil structures. Current design methodologies use limit equilibrium concepts to estimate reinforcement loads for internal stability design, with empirical modifications to match the prediction to observed reinforcement loads at working stresses. This approach has worked reasonably well for steel reinforced walls but appears to seriously overestimate loads for geosynthetic walls. A large database of full-scale geosynthetic walls (16 fully instrumented, full-scale steel reinforced MES wall sections) was utilized to develop a new design methodology based on working stress principles, termed the Ko-Stiffness Method. This new methodology considers the stiffness of the various wall components and their influence on reinforcement loads. Results of simple statistical analyses to evaluate the ratio of predicted to measured peak reinforcement loads in geosynthetic walls were telling: the AASHTO Simplified Method results in an average ratio of predicted to measured loads of 2.9 with a coefficient of variation (COV) of 86 %, whereas the proposed method results in an average of 1.12 and a COV of 41%.
Prediction of Soil Reinforcement Loads in Mechanically Stabilized Earth (MSE) Walls
Proper estimation of soil reinforcement loads and strains is key to accurate design of the internal stability of geosynthetic and steel reinforced soil structures. Current design methodologies use limit equilibrium concepts to estimate reinforcement loads for internal stability design, with empirical modifications to match the prediction to observed reinforcement loads at working stresses. This approach has worked reasonably well for steel reinforced walls but appears to seriously overestimate loads for geosynthetic walls. A large database of full-scale geosynthetic walls (16 fully instrumented, full-scale steel reinforced MES wall sections) was utilized to develop a new design methodology based on working stress principles, termed the Ko-Stiffness Method. This new methodology considers the stiffness of the various wall components and their influence on reinforcement loads. Results of simple statistical analyses to evaluate the ratio of predicted to measured peak reinforcement loads in geosynthetic walls were telling: the AASHTO Simplified Method results in an average ratio of predicted to measured loads of 2.9 with a coefficient of variation (COV) of 86 %, whereas the proposed method results in an average of 1.12 and a COV of 41%.
Prediction of Soil Reinforcement Loads in Mechanically Stabilized Earth (MSE) Walls
T. M. Allen (Autor:in) / R. J. Bathurst (Autor:in)
2001
386 pages
Report
Keine Angabe
Englisch
Soil & Rock Mechanics , Highway Engineering , Slopes , Embarkments , Retaining walls , Earthwork , Design , Construction guidelines , Geotechnical engineering , Soil reinforcement , Geosynthesis , History , Steel reinforced walls , Recommendations , Mechanically Stabilized Earth Walls(MSEW) , Geosynthetic walls
DESIGNING MECHANICALLY STABILIZED EARTH WALLS
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Assessment of Reinforcement Strains in Very Tall Mechanically Stabilized Earth Walls
| Online Contents | 2012
Assessment of Reinforcement Strains in Very Tall Mechanically Stabilized Earth Walls
Online Contents | 2012
Assessment of Reinforcement Strains in Very Tall Mechanically Stabilized Earth Walls
| British Library Online Contents | 2012