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Predictions of future subsidence along Friant-Kern Canal in California
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84633O Predictions of future subsidence along Friant-Kern Canal in California Prokopovich. N P Bull Assoc Engng Geol 1/21, N2, May 1984, P215-228
846335 Sounding out wall strength .Yew Civ Engr N596.28 June 1984. P24 A sonic coring technique is being used to test the integrity of a retaining wall structure which is part of the Rochester Way relief road. London. U K
Estimates of future subsidence along the Friant-Kern Canal were made in 1975 and 1979. The estimates were hampered by: (1) lack of knowledge about the nature of the subsidence. (2) poor and incomplete levelling data. (3) confusing records on groundwater level changes, combined with the probable existence of several aquifer systems, and (4) lack of generally accepted methods of subsidence prediction.
846336 Analytic method for determining stability of retaining walls by failure theory (In French) Mommessin. M. Negre. R Ret, Fr Geotech N25, Nov 1983. P45-53
846331 Jet grouting at Felixstowe Docks Coomber, D B; Wright, P W Ground Engng VI7, N5, July 1984. P19-24
The failure theory allows the determination of the load bearable by the wall using the initial geometry. The results using the method are compared to those using more classical methods and to experimental results.
Faced with a demand to provide a deeper berth at very short notice, the Port of Felixstowe found that it was necessary to strengthen an existing sheet piled quay while keeping a busy container terminal in full operation. The solution adopted was to construct a relieving slab about 5m below ground level, supported on a large number of driven steel H-piles. Jet grout column construction was used to support an existing crane rail foundation beam, running along the rear edge of the area to be excavated for slab construction, which had to be kept in use during construction. At the same time, the jet grout columns also served as a temporary retaining wall and ground water cutoff and were incorporated in the permanent works.
846337 Cautions of Reinforced Earth with residual soils Elias, V; Swanson, P Transp Res Rec N919. 1983. P21-26
846332 Seepage from canals having variable shape and partial lining Mirnateghi, A; Bruch, J C J Hydrol V64, N1-4, July 1983, P239-265 The numerical models presented are solutions to the steady two dimensional flow through a porous medium for canals of variable shape with partial lining. Two main cases are studied: seepage flow from canals with impervious lining on their sloping sides, and seepage from canals with an impervious lining located on the base of the canal and the sides are unlined.
Earth retaining structures 846333 On the stability of supported excavations Britto, A M; Kusakabe, O Can Geotech J 1/21. N2, May 1984. P338-348 The influence of rigid lateral support and slurry support on the stability of both plane strain and axisymmetric excavations are compared using limit analysis. Both wall failure and base failure are considered. For the plane strain case, the rigid lateral support is more effective against wall failure than slurry support. As the length of the rigid support is increased the critical mode of failure changes from wall failure to base failure. For the axisymmetric case the slurry support is more effective for both wall and base failure. 846334 Trenching and shoring. Recent developments Beaumont, T Civ Engng, London Not" 1983, P39-43
There have been considerable developments in trench shoring over the past 7 or 8 years. Modern support methods include: aluminium hydraulic trench shoring, trench boxes, sliding panel systems and drag boxes.
A Reinforced Earth wall constructed with a fine-grained residual soil backfill suffered significant movement. A detailed investigation into the cause of these movements was carried out. The test results indicated a reduction in strength of the fill with increased fines and water content. The design strip pull out capacities of the soils were also sensitive to variations in fines and water content. New backfill has been placed and the reconstructed wall has experienced no problems in 3 years of service.
Base courses and pavements 846338 Research on geotextiles for heavy haul railways Raymond. G P Can Geotech J V21, N2, May 1984, P259-276 Geotextiles have been used for some years to improve conditions for the laying of heavy haul rail tracks, but the improvements have not been long lasting. This paper examines the use of geotextiles for rail tracks and how long term stability can be achieved, together with the desirable attributes for the geotextiles.
846339 Design of polyvinyl chloride tar mixes for resistance to permanent deformation Singh, G; Dhliwayo, M W Geotech Test J V7, NI, March 1984, P19-25 Shortages of normally acceptable structural materials can be alleviated by the use of stabilised lower quality materials. Cokeoven tar, modified with small quantities of PVC, can be mixed with sand to produce a good paving material. Static and dynamic tests performed on PVC tar-sand mixtures show that the addition of PVC vastly improves the Marshall properties of the mixture, and also the resistance to deformation.
84634O Estimation of the modulus of elasticity of cement stabilized materials Kolias, S; Williams, R I T Geotech Test J VT, N1, March 1984, P26-35 A method of rapid estimation of the modulus of elasticity of cement stabilized materials which does not require laboratory determination is desirable, especially for pavement materials. A method for continuously graded materials which is based on a single number grading index obtainable from the grading curve of the material to be stabilised is described. Another method.
84633O Predictions of future subsidence along Friant-Kern Canal in California Prokopovich. N P Bull Assoc Engng Geol 1/21, N2, May 1984, P215-228
846335 Sounding out wall strength .Yew Civ Engr N596.28 June 1984. P24 A sonic coring technique is being used to test the integrity of a retaining wall structure which is part of the Rochester Way relief road. London. U K
Estimates of future subsidence along the Friant-Kern Canal were made in 1975 and 1979. The estimates were hampered by: (1) lack of knowledge about the nature of the subsidence. (2) poor and incomplete levelling data. (3) confusing records on groundwater level changes, combined with the probable existence of several aquifer systems, and (4) lack of generally accepted methods of subsidence prediction.
846336 Analytic method for determining stability of retaining walls by failure theory (In French) Mommessin. M. Negre. R Ret, Fr Geotech N25, Nov 1983. P45-53
846331 Jet grouting at Felixstowe Docks Coomber, D B; Wright, P W Ground Engng VI7, N5, July 1984. P19-24
The failure theory allows the determination of the load bearable by the wall using the initial geometry. The results using the method are compared to those using more classical methods and to experimental results.
Faced with a demand to provide a deeper berth at very short notice, the Port of Felixstowe found that it was necessary to strengthen an existing sheet piled quay while keeping a busy container terminal in full operation. The solution adopted was to construct a relieving slab about 5m below ground level, supported on a large number of driven steel H-piles. Jet grout column construction was used to support an existing crane rail foundation beam, running along the rear edge of the area to be excavated for slab construction, which had to be kept in use during construction. At the same time, the jet grout columns also served as a temporary retaining wall and ground water cutoff and were incorporated in the permanent works.
846337 Cautions of Reinforced Earth with residual soils Elias, V; Swanson, P Transp Res Rec N919. 1983. P21-26
846332 Seepage from canals having variable shape and partial lining Mirnateghi, A; Bruch, J C J Hydrol V64, N1-4, July 1983, P239-265 The numerical models presented are solutions to the steady two dimensional flow through a porous medium for canals of variable shape with partial lining. Two main cases are studied: seepage flow from canals with impervious lining on their sloping sides, and seepage from canals with an impervious lining located on the base of the canal and the sides are unlined.
Earth retaining structures 846333 On the stability of supported excavations Britto, A M; Kusakabe, O Can Geotech J 1/21. N2, May 1984. P338-348 The influence of rigid lateral support and slurry support on the stability of both plane strain and axisymmetric excavations are compared using limit analysis. Both wall failure and base failure are considered. For the plane strain case, the rigid lateral support is more effective against wall failure than slurry support. As the length of the rigid support is increased the critical mode of failure changes from wall failure to base failure. For the axisymmetric case the slurry support is more effective for both wall and base failure. 846334 Trenching and shoring. Recent developments Beaumont, T Civ Engng, London Not" 1983, P39-43
There have been considerable developments in trench shoring over the past 7 or 8 years. Modern support methods include: aluminium hydraulic trench shoring, trench boxes, sliding panel systems and drag boxes.
A Reinforced Earth wall constructed with a fine-grained residual soil backfill suffered significant movement. A detailed investigation into the cause of these movements was carried out. The test results indicated a reduction in strength of the fill with increased fines and water content. The design strip pull out capacities of the soils were also sensitive to variations in fines and water content. New backfill has been placed and the reconstructed wall has experienced no problems in 3 years of service.
Base courses and pavements 846338 Research on geotextiles for heavy haul railways Raymond. G P Can Geotech J V21, N2, May 1984, P259-276 Geotextiles have been used for some years to improve conditions for the laying of heavy haul rail tracks, but the improvements have not been long lasting. This paper examines the use of geotextiles for rail tracks and how long term stability can be achieved, together with the desirable attributes for the geotextiles.
846339 Design of polyvinyl chloride tar mixes for resistance to permanent deformation Singh, G; Dhliwayo, M W Geotech Test J V7, NI, March 1984, P19-25 Shortages of normally acceptable structural materials can be alleviated by the use of stabilised lower quality materials. Cokeoven tar, modified with small quantities of PVC, can be mixed with sand to produce a good paving material. Static and dynamic tests performed on PVC tar-sand mixtures show that the addition of PVC vastly improves the Marshall properties of the mixture, and also the resistance to deformation.
84634O Estimation of the modulus of elasticity of cement stabilized materials Kolias, S; Williams, R I T Geotech Test J VT, N1, March 1984, P26-35 A method of rapid estimation of the modulus of elasticity of cement stabilized materials which does not require laboratory determination is desirable, especially for pavement materials. A method for continuously graded materials which is based on a single number grading index obtainable from the grading curve of the material to be stabilised is described. Another method.