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Lateral static densification at Monaco. Design, construction and testing
182A 933334 Comtrnetton control system of improved ground by deep mixing method Shintani, N; Tawari, M; Noriyasu, N; Sumioka, N Proc International Conference on Geotedmical Etqitwering for Coastal Development, GEO-COAST'91, Yokahama, 3-6 September 1991 P393-398. Publ Japan: Coastal Development Institute of Technology, 1991
933337 Lateral Static ~ t i e n
The deep mixing method is popular in Japan as a soil improvement technique for coastal reclamation projects. A practical construction control system able to cope with unexpected variability in ground conditions has bgen developed. Stability against failure of the improved soil by displacement, rotation, deformation, or lack of bearing capacity can be taken into account. The system combines monitoring of field performance with checking against finite element analysis of the project using material properties from field samples. An example of its application is presented.
The compaction grouting technique has been developed into a scientifically controlled ground treatment called Lateral Static Densification. It is illustrated for a site with a soft loose layer overlain by a thick, stronger layer. Full depth boreholes are drilled and grout pumped at a rate such that grout columns of bulky cylinders are formed. The soil is improved both by densification and by the presence of the columns. The theoretical basis for calculation of bearing capacity of the soil mass is presented. The contributions of microsliearing in sandy soils and of the columns in clayey soils are discussed.
933335 Field test of deep mixing method for the Tram Tokyo Bay Highway project Wasa, Y; Kawase, Y; Kawamoto, K Proc International Conference on Geoteclmical Engineering for Coastal Development, GEO-COAST'91, Yokaluuna, 3-6 September 1991 P417-422. Publ Japan: Coastal Development Institute of Technology, 1991 Deep Mixing was one method of soil improvement of the soft seabed for the Trans Tokyo Bay Project. The design strength specified was lower than that usually set for foundation soils, to enable the proposed shield tunnelling to be carried out easily. Field mixing tests followed by laboratory tests were carried out to confirm the feasibility of the low-strength Deep Mixing Method. Stabilisation with an average UCS of 1.0-1.SMPa was achieved.
at Menace. Design, construction
and tem~ Gambin, M P In: Deep Foundation Improvements: Design, Construction, and Testing (papers to a Sympes~m presented at Lns Vegas, 25 January 1990) P248-265. Publ Philadelphia: ASTM, 1991 (ASTM Special Technical Publication NI089)
933338 Long term behavioar of rammed stone columns (In French) Bustamente, M; Jacquard, C; Berthelot, P Proc lOth Europea Conference on Soil Meelmics and Foundation Engineering, Florence, 26-30 May 1991 V1. P345348. Publ Rotterdam: A A Balkema, 1991 Dry rammed (Franki process) stone columns have been used only infrequently in France and there is no accepted and experimentally validated method to calculate their benefits. Full scale load tests have been carried out on rammed stone columns. Bearing capacities achieved and settlements observed are discussed. The ability of the bearing capacity calculation method used for vibro-jet columns to predict for dry rammed columns is examined. Results are also presented from a 3 year survey of a large structure founded on rammed columns. 933339 Design and construction monitoring of stone column foundations in hydraulic fill Callanan, J F Proc lOth European Comference on Soil Meelumics and
Soil compaction
Foundation Engineering, Florence, 26-30 May 1991 VI, P349352. Publ Rotterdam: A A Balkema, 1991
See also: 933085, 933369, 933380, 933384, 933387
Ground treatment for the foundations of 6 large storage tanks on land reclaimed from Dublin Bay by hydraulic fill is described. The effectiveness of the treatment was monitored using dynamic cone penetration tests before, during, and after the stone columns were constructed. The DCPT results demonstrate the effects of stone column spacing on the degree of strength improvement. Settlements of the tanks were monitored during their construction and loading and the data used to back calculate the degree of ground improvement achieved.
933336 Sdmale testing methods for evaluation of deep foundation improvement by comlmctton grouting Byle, M J; Blakita, P M; Winter, E In: Deep Foumlation Improvements: Design, Constrnction, and Testi~ (papers to a Sympovimn presented at LAts Vegas, 25 January 1990) P234.247. Publ Philadelphia: ASTM, 1991 ( A S T M Special Technical Publication N1089) Compaction grouting has been used for foundation soil treatment for over 30 years. Quality verification has generally been by CPT or SPT methods, but very large numbers of tests may be required to achieve an accurate picture of a nonhomogeneous soil mass. Direct transmission seismic testing is proposed as an alternative. A ease history of compaction grouting and its quality assessment by uphole, downhole, and crosshole seismic methods is described. Results are presented and discussed. The seismic methods, which measure average properties over larger areas than most single point tests, show reproducible and reliable results, provided care is taken in interpretation of the seismic data.
933340 Foundations of the theatre and mmmm in Nice to be erected in soils improved by compaedm grouting (In French) Guilloux, A Pvoc 10tk Em,opeu Conference on Soil Mncimwics and Foundation Esgincer/ag, F/re,once, 26-30 May 1991 V1, P429432. Publ Rotterdam: A A Balkema, 1991 The new civic complex in Nice is located at a site of alluvium containing random layers of compressible silts. Site investigation was carried out to delineate the extent of these layers. The improvement treatment chosen was static horizontal compaction by injection of grout columns. The improvement in soil properties achieved was assessed using penetration tests. Settlement behaviour of the structures is illustrated.
© 1993 Pergamon Press Ltd. Reproduction not permitted
933337 Lateral Static ~ t i e n
The deep mixing method is popular in Japan as a soil improvement technique for coastal reclamation projects. A practical construction control system able to cope with unexpected variability in ground conditions has bgen developed. Stability against failure of the improved soil by displacement, rotation, deformation, or lack of bearing capacity can be taken into account. The system combines monitoring of field performance with checking against finite element analysis of the project using material properties from field samples. An example of its application is presented.
The compaction grouting technique has been developed into a scientifically controlled ground treatment called Lateral Static Densification. It is illustrated for a site with a soft loose layer overlain by a thick, stronger layer. Full depth boreholes are drilled and grout pumped at a rate such that grout columns of bulky cylinders are formed. The soil is improved both by densification and by the presence of the columns. The theoretical basis for calculation of bearing capacity of the soil mass is presented. The contributions of microsliearing in sandy soils and of the columns in clayey soils are discussed.
933335 Field test of deep mixing method for the Tram Tokyo Bay Highway project Wasa, Y; Kawase, Y; Kawamoto, K Proc International Conference on Geoteclmical Engineering for Coastal Development, GEO-COAST'91, Yokaluuna, 3-6 September 1991 P417-422. Publ Japan: Coastal Development Institute of Technology, 1991 Deep Mixing was one method of soil improvement of the soft seabed for the Trans Tokyo Bay Project. The design strength specified was lower than that usually set for foundation soils, to enable the proposed shield tunnelling to be carried out easily. Field mixing tests followed by laboratory tests were carried out to confirm the feasibility of the low-strength Deep Mixing Method. Stabilisation with an average UCS of 1.0-1.SMPa was achieved.
at Menace. Design, construction
and tem~ Gambin, M P In: Deep Foundation Improvements: Design, Construction, and Testing (papers to a Sympes~m presented at Lns Vegas, 25 January 1990) P248-265. Publ Philadelphia: ASTM, 1991 (ASTM Special Technical Publication NI089)
933338 Long term behavioar of rammed stone columns (In French) Bustamente, M; Jacquard, C; Berthelot, P Proc lOth Europea Conference on Soil Meelmics and Foundation Engineering, Florence, 26-30 May 1991 V1. P345348. Publ Rotterdam: A A Balkema, 1991 Dry rammed (Franki process) stone columns have been used only infrequently in France and there is no accepted and experimentally validated method to calculate their benefits. Full scale load tests have been carried out on rammed stone columns. Bearing capacities achieved and settlements observed are discussed. The ability of the bearing capacity calculation method used for vibro-jet columns to predict for dry rammed columns is examined. Results are also presented from a 3 year survey of a large structure founded on rammed columns. 933339 Design and construction monitoring of stone column foundations in hydraulic fill Callanan, J F Proc lOth European Comference on Soil Meelumics and
Soil compaction
Foundation Engineering, Florence, 26-30 May 1991 VI, P349352. Publ Rotterdam: A A Balkema, 1991
See also: 933085, 933369, 933380, 933384, 933387
Ground treatment for the foundations of 6 large storage tanks on land reclaimed from Dublin Bay by hydraulic fill is described. The effectiveness of the treatment was monitored using dynamic cone penetration tests before, during, and after the stone columns were constructed. The DCPT results demonstrate the effects of stone column spacing on the degree of strength improvement. Settlements of the tanks were monitored during their construction and loading and the data used to back calculate the degree of ground improvement achieved.
933336 Sdmale testing methods for evaluation of deep foundation improvement by comlmctton grouting Byle, M J; Blakita, P M; Winter, E In: Deep Foumlation Improvements: Design, Constrnction, and Testi~ (papers to a Sympovimn presented at LAts Vegas, 25 January 1990) P234.247. Publ Philadelphia: ASTM, 1991 ( A S T M Special Technical Publication N1089) Compaction grouting has been used for foundation soil treatment for over 30 years. Quality verification has generally been by CPT or SPT methods, but very large numbers of tests may be required to achieve an accurate picture of a nonhomogeneous soil mass. Direct transmission seismic testing is proposed as an alternative. A ease history of compaction grouting and its quality assessment by uphole, downhole, and crosshole seismic methods is described. Results are presented and discussed. The seismic methods, which measure average properties over larger areas than most single point tests, show reproducible and reliable results, provided care is taken in interpretation of the seismic data.
933340 Foundations of the theatre and mmmm in Nice to be erected in soils improved by compaedm grouting (In French) Guilloux, A Pvoc 10tk Em,opeu Conference on Soil Mncimwics and Foundation Esgincer/ag, F/re,once, 26-30 May 1991 V1, P429432. Publ Rotterdam: A A Balkema, 1991 The new civic complex in Nice is located at a site of alluvium containing random layers of compressible silts. Site investigation was carried out to delineate the extent of these layers. The improvement treatment chosen was static horizontal compaction by injection of grout columns. The improvement in soil properties achieved was assessed using penetration tests. Settlement behaviour of the structures is illustrated.
© 1993 Pergamon Press Ltd. Reproduction not permitted