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Experimental study of reinforced-earth wall
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51A 911399 Review of field measurements of the behaviour of geogrid reinforced slopes and walls Rimoldi, P Proc International Geoteclmical Symposium on Theory and Practice of Earth Reinforcement, Fakaoka Kyuslm, 5-7 October 1988 P571-576. Publ Rotterdam: A A Balkema, 1988 Design methods for geogrid reinforced structures are briefly presented. Nine case examples of different types, their field instrumentation, and comparison between design predictions and field behaviour are illustrated. Although hypotheses presented can explain much of the field behaviour, the data set is too small for statistical conclusions to be drawn.
911400 Experimental study of reinforced-earth wall Zhonglun Shi; Mingde Cheng Proc International Geoteclmical Symposium on Theory and Practice of Earth Reinforcement, Fukuoka Kyushu, 5-7 October 1988 P583-587. Publ Rotterdam: A A Balkema, 1988 Full scale and laboratory model tests were carried out on reinforced earth walls. Vertical soil stress, lateral pressure on the wall facing, distribution and magnitude of tensile forces in the reinforcement, determination of active and passive areas, and wall displacements were examined. Damage due to excessive deformation, slope failure, or failure due to breaking of the bond between the reinforcement and facing are described.
911401 Geotextiles earth reinforced retaining wall tests Yamaoka, I; Yamashiro, T; Mondori, K Proc luteraational Geatechm'cal Symposium on Theory and Practice o f Earth Reinforcement, Fukuoka Kyuslm, 5-7 October 1988 P589-594. Publ Rotterdam: A A Baikema, 1988 An instrumented, 5.4m high wall of textile reinforced granular fill was constructed. After settlement had stabilised, a gnnite facing was added. The wall was designed by a conventional method with a lower than usual safety factor to provide a more critical condition for loading tests. Static and dynamic (vehicle) loading tests were carried out, with settlements and horizontal displacements monitored. Effects of rainfall over an 8 month period were also examined. Performance is satisfactory to date.
911403 26m high reinforced soil quaywalh design and full-scale test Zhongchun Ouyang Proc International Geotecludcal Symposium on Theory and Practice of Earth Reinforcement, Fukuoka Kyuslm, 5-7 October 1988 P599-604. Publ Rotterdam: ,4 A Balkema. 1988 Design and construction of a large wall with concrete facing panels and sand and gravel fill reinforced with polypropylene geotextile is described. Tiebacks at full and half height were installed to improve stability. Current methods of assessing reinforcement tension are not suitable for walls of height above 15m, and so a new equation, expressed in terms of lateral earth pressure, is developed for the structure. A multisurface failure plane, similar to two Schosser type planes separated at the mid-height tieback, is proposed as a basis for determining reinforcement length. 911404 Soil nailing - design and application to modern and ancient retaining walls Schwing, E; Gudehus, G Proc International Geoteclmical Symposium on Theory and Practice of Earth Reinforcement, Fakuoka Kyuslm, 5-7 October 1988 t'605-610. Publ Rotterdam: A A Balkema. 1988 Two structures are considered. The first, a steep road cut in Keuper marl,was monitored to study forces at the nail heads and wall displacements during freeze-thaw cycling over a three year period. The second was an ancient masonry structure. Its stability was analysed using a simplified limit state equation, based on a two body translatory mechanism and ground bearing capacity. Results of the analysis, confirmed by scale model tests, suggest the stability of the structure can be increased to a suitable level by soil nailing. 911405 Compatibility, serviceability and design factors for reinforced soil walls Jeweli, R A Proc International Geoteclmical Symposium on Theory and Practice of Earth Reinforcement, Fukaoka Kyuslm, 5-7 October 1988 1'611-616. Publ Rotterdam: A A Balkema, 1988 A general design approach for geotextile reinforced soil walls is described. It includes the following concepts: separation of forces required for equilibrium (soil dependent) and forces available (reinforcement dependent); including effects of time, temperature, environment, and possible mechanical damage; linking compatibility between soil and reinforcement by equality of their tensile strains; and allowing likely deformations to be estimated from idealised equilibrium stress distributions. Non-dimensional design charts for estimation of wall face displacements are presented.
Groundwater problems 911402 Limit equilibrium of geotextile reinforced structures Zhang, Y; Schwing, E Proc International Geoteclmical Symposium on Theory and Practice of Earth Reinforcement, Fukuoka Kyaslm, 5-7 October 1988 P595-598. Publ Rotterdam: A A Balkema, 1988 The global stability of geotextile reinforced retaining structures is analysed, taking into account the deformation properties of the soil-textile composite. Changes in the direction and magnitude of tensile forces are such that stability tends to increase with initial slip. This continues until a certain value of deformation is reached. It is shown that safety increases, reaching the limit state with appearance of local deformation. Model test results are consistent with theory.
911406 Design and constrnetton of a tunnel beneath the water table in an urban area (Rome, Italy) (In French) Nardocci, A; Botto, G Proc International Comgress on Tunnels and Water, Madrid, 15-18 June 1988 VI, P541-547. Publ Rotterdam: A A Balkema, 1988 Construction of a railway tunnel in saturated silty sand in an urban area is described. A layer of consolidated ground was first established below the surface using the Trevijet system of cement grout injection. This formed the base of the floor, which was installed after excavation from the top down between diaphragm walls.
© 1991 Pergamon Press pic. Reproduction not permitted
51A 911399 Review of field measurements of the behaviour of geogrid reinforced slopes and walls Rimoldi, P Proc International Geoteclmical Symposium on Theory and Practice of Earth Reinforcement, Fakaoka Kyuslm, 5-7 October 1988 P571-576. Publ Rotterdam: A A Balkema, 1988 Design methods for geogrid reinforced structures are briefly presented. Nine case examples of different types, their field instrumentation, and comparison between design predictions and field behaviour are illustrated. Although hypotheses presented can explain much of the field behaviour, the data set is too small for statistical conclusions to be drawn.
911400 Experimental study of reinforced-earth wall Zhonglun Shi; Mingde Cheng Proc International Geoteclmical Symposium on Theory and Practice of Earth Reinforcement, Fukuoka Kyushu, 5-7 October 1988 P583-587. Publ Rotterdam: A A Balkema, 1988 Full scale and laboratory model tests were carried out on reinforced earth walls. Vertical soil stress, lateral pressure on the wall facing, distribution and magnitude of tensile forces in the reinforcement, determination of active and passive areas, and wall displacements were examined. Damage due to excessive deformation, slope failure, or failure due to breaking of the bond between the reinforcement and facing are described.
911401 Geotextiles earth reinforced retaining wall tests Yamaoka, I; Yamashiro, T; Mondori, K Proc luteraational Geatechm'cal Symposium on Theory and Practice o f Earth Reinforcement, Fukuoka Kyuslm, 5-7 October 1988 P589-594. Publ Rotterdam: A A Baikema, 1988 An instrumented, 5.4m high wall of textile reinforced granular fill was constructed. After settlement had stabilised, a gnnite facing was added. The wall was designed by a conventional method with a lower than usual safety factor to provide a more critical condition for loading tests. Static and dynamic (vehicle) loading tests were carried out, with settlements and horizontal displacements monitored. Effects of rainfall over an 8 month period were also examined. Performance is satisfactory to date.
911403 26m high reinforced soil quaywalh design and full-scale test Zhongchun Ouyang Proc International Geotecludcal Symposium on Theory and Practice of Earth Reinforcement, Fukuoka Kyuslm, 5-7 October 1988 P599-604. Publ Rotterdam: ,4 A Balkema. 1988 Design and construction of a large wall with concrete facing panels and sand and gravel fill reinforced with polypropylene geotextile is described. Tiebacks at full and half height were installed to improve stability. Current methods of assessing reinforcement tension are not suitable for walls of height above 15m, and so a new equation, expressed in terms of lateral earth pressure, is developed for the structure. A multisurface failure plane, similar to two Schosser type planes separated at the mid-height tieback, is proposed as a basis for determining reinforcement length. 911404 Soil nailing - design and application to modern and ancient retaining walls Schwing, E; Gudehus, G Proc International Geoteclmical Symposium on Theory and Practice of Earth Reinforcement, Fakuoka Kyuslm, 5-7 October 1988 t'605-610. Publ Rotterdam: A A Balkema. 1988 Two structures are considered. The first, a steep road cut in Keuper marl,was monitored to study forces at the nail heads and wall displacements during freeze-thaw cycling over a three year period. The second was an ancient masonry structure. Its stability was analysed using a simplified limit state equation, based on a two body translatory mechanism and ground bearing capacity. Results of the analysis, confirmed by scale model tests, suggest the stability of the structure can be increased to a suitable level by soil nailing. 911405 Compatibility, serviceability and design factors for reinforced soil walls Jeweli, R A Proc International Geoteclmical Symposium on Theory and Practice of Earth Reinforcement, Fukaoka Kyuslm, 5-7 October 1988 1'611-616. Publ Rotterdam: A A Balkema, 1988 A general design approach for geotextile reinforced soil walls is described. It includes the following concepts: separation of forces required for equilibrium (soil dependent) and forces available (reinforcement dependent); including effects of time, temperature, environment, and possible mechanical damage; linking compatibility between soil and reinforcement by equality of their tensile strains; and allowing likely deformations to be estimated from idealised equilibrium stress distributions. Non-dimensional design charts for estimation of wall face displacements are presented.
Groundwater problems 911402 Limit equilibrium of geotextile reinforced structures Zhang, Y; Schwing, E Proc International Geoteclmical Symposium on Theory and Practice of Earth Reinforcement, Fukuoka Kyaslm, 5-7 October 1988 P595-598. Publ Rotterdam: A A Balkema, 1988 The global stability of geotextile reinforced retaining structures is analysed, taking into account the deformation properties of the soil-textile composite. Changes in the direction and magnitude of tensile forces are such that stability tends to increase with initial slip. This continues until a certain value of deformation is reached. It is shown that safety increases, reaching the limit state with appearance of local deformation. Model test results are consistent with theory.
911406 Design and constrnetton of a tunnel beneath the water table in an urban area (Rome, Italy) (In French) Nardocci, A; Botto, G Proc International Comgress on Tunnels and Water, Madrid, 15-18 June 1988 VI, P541-547. Publ Rotterdam: A A Balkema, 1988 Construction of a railway tunnel in saturated silty sand in an urban area is described. A layer of consolidated ground was first established below the surface using the Trevijet system of cement grout injection. This formed the base of the floor, which was installed after excavation from the top down between diaphragm walls.
© 1991 Pergamon Press pic. Reproduction not permitted