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Deep foundation and excavation in Shanghai clay
109A Load-displacement behaviour and distribution of ground reaction with depth were monitored using a computer based system. A sliding failure model of the ground is developed and ultimate bearing capacity calculated.
902358 Computer aided designing, detailing, and drafting of transmission line tower foundations Santhakumar, A R; Arunachalam, S Proc Symposium on Computer Aided Design and Monitoring in Geotechnical Engineering, Bangkok, 3-6 December 1986 P562.574. Publ Bangkok: AIT, 1986
downhole and crosshole seismic surveys were used. Settlement of abutments and piers during and after construction was monitored. 902362 Monitoring for the construction of underground LNG storage tanks Tamura, S; Suzuki, H; Kawahara, T; Haga, T; Sakimoto, J; Hirao, J Proc 2nd International Symposium on Field Measurements in Geomechanics, Kobe, 6-9 April 1987 VI, P593-602. Publ Rotterdam: A A Balkema, 1988
A flowchart for the design of tower foundations is presented. The program develops in six stages: analysis technique and choice of type of foundation; calculation of area of steel; bar selection and concrete grade selection; detailing; bar scheduling; and costing. The first stage takes into account properties of soil, soil structure interaction, and axial, horizontal, and bending loads.
The slurry wall, side wall and bottom slab of an excavation were monitored during construction using a variety of instruments. The monitoring method involved comparison of the actual state of the earth retaining wall with the control values and estimating the behaviour for the next stage quantitatively with this information. Lateral pressure, concrete strength, stress of slurry walls, concrete creep and thermal stress when placing the sidewall concrete were measured.
902359 Effects of partial drainage on the lateral deformation of clay foundations Sekiguchi, H; Shibata, T; Mimura, M Proc International Conference on Rheoiogy and Soil Mechanics, Coventry, 12-16 Sept 1988 P164-181. Publ London: Elsevier. 1988
902363 Deep foundation and excavation in Shanghai clay Lu, Z Q Proe International Conference on Engineering Problems of Regional Soils, Beijing, 11-15 August 1988 P111-126. Publ Beo'ing: International Academic Publishers, 1989
A framework to assess lateral soil movements of embankment foundations has been developed, based on coupled stress-flow analyses using the finite element method. A plane strain elastoviscoplastic constitutive model for clays is used. Calculated results are presented in chart form so that the effects of embanking speed or partial drainage on lateral movement can be readily assessed. The performance of a wide variety of natural soils loaded by embankments is reviewed in detail, showing that the nature of the soil deposits is well reflected in the pattern and magnitude of their lateral deformations.
Problems during construction of a large steelworks complex over soft soils are discussed. The alluvial deposit of silty and organic clays extended to 60m depth. Soil properties are described. Deep pile foundations were specified. Load testing of driven piles, with load distribution, pile friction and settlement monitored, were carried out. Deep excavations required lowering of groundwater level, and consolidation of underlying soil layers to prevent heave. Horizontal displacements occurred because of surcharging caused by the presence of heavy construction machinery. Remedial measures are discussed.
902360 Foundations for Honshu-Shikoku bridges Yoshida, I; Kashima, S; Yamagata, M Proc 2nd International Symposium on Field Measurements in Geomechanics, Kobe, 6-9 April 1987 VI, P451-461. Publ Rotterdam: A A Balkema, 1988
902364 Design of footings on expansive soils Mitchell, P W Proc International Conference on Engineering Problems of Regional Soils, Beijing, 11-15 August 1988 P127-135. Publ Beijing: International Academic Publishers, 1989
Foundations for the Honshu-Shikoku bridges are set in a variety of geological conditions. Detailed investigations using field and laboratory tests were carried out at each site to determine shear constants and bearing capacity for use in bridge foundation design. The foundations include soft weathered rocks, higher strength jointed granite bedrock, layered soft sedimentary rock, and sandy gravel.
The general design principles for piled foundations or stiffened shallow footings in expansive soils are discussed. Prediction of expansive soil behaviour, ground movement, interaction with structures, and application to foundation design are considered. Design methods for foundations are illustrated. Design equations are a supplement to thorough understanding of geological conditions, case history examination, and engineering judgement, not an alternative.
902361 Geotechnical measurements before, during and after the construction of 50m high valley bridges Katzenbach, R Proc 2nd International Symposium on Field Measurements in Geomechanics, Kobe, 6-9 April 1987 VI, P463-472. Publ Rotterdam: A A Balkema, 1988
902365 Geotechnical engineering in volcanic ash soils Wesley, L D; Matuschka, T Proc 2nd International Conference on Geomechanics in Tropical Soils, Singapore, 12-14 December 1988 Vl, P333340. Publ Rotterdam: A A Balkema, 1988
Geotechnical investigation before, during and after construction of 8 single span railway bridges is described. All the bridges were founded on the Bunter series, laminated and fissured sandstones and mudstones. Before construction, geoelectrical resistivity measurement was used for preliminary investigation and calibrated by core logging. Some sites had collapse pipes due to leaching of deep karst, so additional
The formation and distinctive properties of volcanic ash soils are described, and 3 case studies of engineering projects on the soils presented. In Java, a raft foundation was used for a power station. Bearing capacity was determined using CPT and laboratory vane and triaxial tests, and soil compression and settlement estimated using consolidation tests. In New Zealand, storage tanks were founded directly onto the soil.
© 1990 Pergamon Press plc. Reproduction not permitted
902358 Computer aided designing, detailing, and drafting of transmission line tower foundations Santhakumar, A R; Arunachalam, S Proc Symposium on Computer Aided Design and Monitoring in Geotechnical Engineering, Bangkok, 3-6 December 1986 P562.574. Publ Bangkok: AIT, 1986
downhole and crosshole seismic surveys were used. Settlement of abutments and piers during and after construction was monitored. 902362 Monitoring for the construction of underground LNG storage tanks Tamura, S; Suzuki, H; Kawahara, T; Haga, T; Sakimoto, J; Hirao, J Proc 2nd International Symposium on Field Measurements in Geomechanics, Kobe, 6-9 April 1987 VI, P593-602. Publ Rotterdam: A A Balkema, 1988
A flowchart for the design of tower foundations is presented. The program develops in six stages: analysis technique and choice of type of foundation; calculation of area of steel; bar selection and concrete grade selection; detailing; bar scheduling; and costing. The first stage takes into account properties of soil, soil structure interaction, and axial, horizontal, and bending loads.
The slurry wall, side wall and bottom slab of an excavation were monitored during construction using a variety of instruments. The monitoring method involved comparison of the actual state of the earth retaining wall with the control values and estimating the behaviour for the next stage quantitatively with this information. Lateral pressure, concrete strength, stress of slurry walls, concrete creep and thermal stress when placing the sidewall concrete were measured.
902359 Effects of partial drainage on the lateral deformation of clay foundations Sekiguchi, H; Shibata, T; Mimura, M Proc International Conference on Rheoiogy and Soil Mechanics, Coventry, 12-16 Sept 1988 P164-181. Publ London: Elsevier. 1988
902363 Deep foundation and excavation in Shanghai clay Lu, Z Q Proe International Conference on Engineering Problems of Regional Soils, Beijing, 11-15 August 1988 P111-126. Publ Beo'ing: International Academic Publishers, 1989
A framework to assess lateral soil movements of embankment foundations has been developed, based on coupled stress-flow analyses using the finite element method. A plane strain elastoviscoplastic constitutive model for clays is used. Calculated results are presented in chart form so that the effects of embanking speed or partial drainage on lateral movement can be readily assessed. The performance of a wide variety of natural soils loaded by embankments is reviewed in detail, showing that the nature of the soil deposits is well reflected in the pattern and magnitude of their lateral deformations.
Problems during construction of a large steelworks complex over soft soils are discussed. The alluvial deposit of silty and organic clays extended to 60m depth. Soil properties are described. Deep pile foundations were specified. Load testing of driven piles, with load distribution, pile friction and settlement monitored, were carried out. Deep excavations required lowering of groundwater level, and consolidation of underlying soil layers to prevent heave. Horizontal displacements occurred because of surcharging caused by the presence of heavy construction machinery. Remedial measures are discussed.
902360 Foundations for Honshu-Shikoku bridges Yoshida, I; Kashima, S; Yamagata, M Proc 2nd International Symposium on Field Measurements in Geomechanics, Kobe, 6-9 April 1987 VI, P451-461. Publ Rotterdam: A A Balkema, 1988
902364 Design of footings on expansive soils Mitchell, P W Proc International Conference on Engineering Problems of Regional Soils, Beijing, 11-15 August 1988 P127-135. Publ Beijing: International Academic Publishers, 1989
Foundations for the Honshu-Shikoku bridges are set in a variety of geological conditions. Detailed investigations using field and laboratory tests were carried out at each site to determine shear constants and bearing capacity for use in bridge foundation design. The foundations include soft weathered rocks, higher strength jointed granite bedrock, layered soft sedimentary rock, and sandy gravel.
The general design principles for piled foundations or stiffened shallow footings in expansive soils are discussed. Prediction of expansive soil behaviour, ground movement, interaction with structures, and application to foundation design are considered. Design methods for foundations are illustrated. Design equations are a supplement to thorough understanding of geological conditions, case history examination, and engineering judgement, not an alternative.
902361 Geotechnical measurements before, during and after the construction of 50m high valley bridges Katzenbach, R Proc 2nd International Symposium on Field Measurements in Geomechanics, Kobe, 6-9 April 1987 VI, P463-472. Publ Rotterdam: A A Balkema, 1988
902365 Geotechnical engineering in volcanic ash soils Wesley, L D; Matuschka, T Proc 2nd International Conference on Geomechanics in Tropical Soils, Singapore, 12-14 December 1988 Vl, P333340. Publ Rotterdam: A A Balkema, 1988
Geotechnical investigation before, during and after construction of 8 single span railway bridges is described. All the bridges were founded on the Bunter series, laminated and fissured sandstones and mudstones. Before construction, geoelectrical resistivity measurement was used for preliminary investigation and calibrated by core logging. Some sites had collapse pipes due to leaching of deep karst, so additional
The formation and distinctive properties of volcanic ash soils are described, and 3 case studies of engineering projects on the soils presented. In Java, a raft foundation was used for a power station. Bearing capacity was determined using CPT and laboratory vane and triaxial tests, and soil compression and settlement estimated using consolidation tests. In New Zealand, storage tanks were founded directly onto the soil.
© 1990 Pergamon Press plc. Reproduction not permitted