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End and shaft bearing capacity of piles evaluated separately out of static pile loading test results
47A 911367 In situ tests in pile deign Campanella, R G; Robertson, P K; Davies, M P; Sy, A Proc 12th International Conference on Soil Mechanics and Foundation Engineering, Rio de Janeiro, 13-18 August 1989 VI, P199-203. Publ Rotterdam: A A Balkema, 1989
911371 Vertical load bearing capacity from soil stresOh parameters Simek, J; Ocenasek, J; Sedlecky, 0 Proc 1st International Geoteclmical Seminar o n Deep Foundations on Bored and Auger Piles, Ghent, 7-10 June 1988 P477-480. Publ Rotterdam: A A Balkema, 1988
13 axial pile capacity design methods based on CPT results have been evaluated using results from 8 full scale load tests on 6 different piles. The methods were divided into direct and indirect categories. Two methods for predicting lateral load response, based on pressuremeter and DMT results, were also evaluated. Predicted and measured responses are compared and discussed.
Results of over 100 loading tests on large diameter bored castin-situ piles have been analysed. Base resistance and vertical and horizontal forces on the pile shaft were measured during loading. Vertical ultimate bearing capacity can be predicted using two dimensionless parameters related to pile geometry and earth pressure, and two partial coefficients related to skin friction, which can be obtained from loading tests.
911368 Instruments for measuring the effective stresses acting on a pile jacked into overconsolidated clay Bond, A J; Jardine, R J Proe Conference on Instrumentation in Geoteclmical Engineering, Nottingham, 3-5 April 1989 V I , P319-341. Publ London: Thomas Telford, 1989 To help improve design of displacement piles, reliable effective stress theory is required to describe pile behaviour. To obtain data for such theory, an instrumented pile has been developed at Imperial College. Its installation in heavily overconsolidated London Clay is described. Displacement, pile capacity, radial total stress, shear stress, temperature, axial loads, and pore pressures can be monitored. Instrument design requirements, manufacture, calibration, and performance are discussed. Cell action of the earth pressure cells and response times of the pore pressure probes are assessed. 911369 Numerical and physical modelling of piles behaviour under monotonous and cyclic loading Boulon, M Proc laternatio~al Symposium o n Modelling Soil-WaterStructure Interactions, Delft, 29 August-2 September 1988 P285-293. Publ Rotterdam: A A Balkema, 1988
Soil structure interaction for tension piles under repeated loading is examined. The theory and use of cyclic pseudocreep for simulation of pile behaviour is first assessed. The necessity to include soil structure interface behaviour for piles in coarse materials is pointed out. Use of laboratory model tests, direct shear tests and numerical simulations to determine pile frictional resistance is described. Scale effects and the use of centrifuge tests are considered. 911370 Model studies and numerical analysis of pile-soil interaction of single and arrayed piles under static and dynamic Ioadings Gao, M; Tong, J P; Fang, H L Proc International Symposium on Modelling SoU-WaterStructure Interactions, Delft, 29 August-2 September 1988 t'305-313. Pubi Rotterdam: A A Balkema, 1988 Model tests were carried out using single piles and multi-piled beams in saturated sands under static and dynamic lateral loading. Lateral pile-soil stiffness is related to load level, frequency of excitation, and pile spacing. In static loading, but not in dynamic, there was uneven distribution of loads amongst piles in the multi-pile space. Using a proposed P-Y curve with appropriate parameters and a dynamic finite element analysis, predictions are in good agreement with model test results.
911372 Measurement of horizontal thrust on piles of a bridge abutment Thamm, B R; Wolf, A Proc Ist International Geoteclmical Seminar on Deep Foundations on Bored and Auger Piles, Ghent, 7-10 June 1988 P481-487. Publ Rotterdam: A A Baikema, 1988 Bridge abutment walls on the B5 highway in Germany were founded on a concrete pile cap at a site with deep, highly compressible soft clay and peat. Two of the large diameter bored piles were instrumented to monitor the horizontal thrust on the piles and the movements of the piles and the soils inbetween. Results are presented and compared to the German common practice in design and calculation of horizontal thrust on piles.
911373 End and shaft bearing capacity of piles evaluated separately out of static pile loading test results Van Impe, W F; Van den Broeck, M; Thooft, K Proc 1st iatermatio~d Geotecimical Seminar on Deep Foundations on Bored and Auger Piles, Ghent, 7-10 June 1988 P489-498. Publ Rotterdam: A A Balkema, 1988 The methods of Van Weele and of Leonards and Lovell for separating the end bearing and side friction components of total capacity of a pile determined from static loading tests are reviewed. Some modifications proposed to improve the practicality of these methods for tests on non-instrumented piles are reviewed and checked against load test data.
911374 Experimental research on end bearing capacity of bored and drilled piles Yi-Ming Gong; You-Nian Zhang; Chun Liu; Guo-Dong Ma Proc Ist lateraatiomd Geoteclmical Semimw on Deep Fotmdations on Bored and Anger Piles, Gbeat, 7-10 June 1988 P499-505. Publ Rotterdam: A A Balkema, ]988 Load tests were performed in Fujian, China, on instrumented large diameter bored piles, with end bearing strata of bedrock, residual soils, and clay. Loads ranged from 7200-16000kN. Unless the bearing stratum was hard rock, shaft resistance was the major component of pile capacity. End bearing capacity was generally smaller than predicted, attributable to disturbance effects during pile construction.
© 1991 Pergamon Press plc. Reproduction not permitted
911371 Vertical load bearing capacity from soil stresOh parameters Simek, J; Ocenasek, J; Sedlecky, 0 Proc 1st International Geoteclmical Seminar o n Deep Foundations on Bored and Auger Piles, Ghent, 7-10 June 1988 P477-480. Publ Rotterdam: A A Balkema, 1988
13 axial pile capacity design methods based on CPT results have been evaluated using results from 8 full scale load tests on 6 different piles. The methods were divided into direct and indirect categories. Two methods for predicting lateral load response, based on pressuremeter and DMT results, were also evaluated. Predicted and measured responses are compared and discussed.
Results of over 100 loading tests on large diameter bored castin-situ piles have been analysed. Base resistance and vertical and horizontal forces on the pile shaft were measured during loading. Vertical ultimate bearing capacity can be predicted using two dimensionless parameters related to pile geometry and earth pressure, and two partial coefficients related to skin friction, which can be obtained from loading tests.
911368 Instruments for measuring the effective stresses acting on a pile jacked into overconsolidated clay Bond, A J; Jardine, R J Proe Conference on Instrumentation in Geoteclmical Engineering, Nottingham, 3-5 April 1989 V I , P319-341. Publ London: Thomas Telford, 1989 To help improve design of displacement piles, reliable effective stress theory is required to describe pile behaviour. To obtain data for such theory, an instrumented pile has been developed at Imperial College. Its installation in heavily overconsolidated London Clay is described. Displacement, pile capacity, radial total stress, shear stress, temperature, axial loads, and pore pressures can be monitored. Instrument design requirements, manufacture, calibration, and performance are discussed. Cell action of the earth pressure cells and response times of the pore pressure probes are assessed. 911369 Numerical and physical modelling of piles behaviour under monotonous and cyclic loading Boulon, M Proc laternatio~al Symposium o n Modelling Soil-WaterStructure Interactions, Delft, 29 August-2 September 1988 P285-293. Publ Rotterdam: A A Balkema, 1988
Soil structure interaction for tension piles under repeated loading is examined. The theory and use of cyclic pseudocreep for simulation of pile behaviour is first assessed. The necessity to include soil structure interface behaviour for piles in coarse materials is pointed out. Use of laboratory model tests, direct shear tests and numerical simulations to determine pile frictional resistance is described. Scale effects and the use of centrifuge tests are considered. 911370 Model studies and numerical analysis of pile-soil interaction of single and arrayed piles under static and dynamic Ioadings Gao, M; Tong, J P; Fang, H L Proc International Symposium on Modelling SoU-WaterStructure Interactions, Delft, 29 August-2 September 1988 t'305-313. Pubi Rotterdam: A A Balkema, 1988 Model tests were carried out using single piles and multi-piled beams in saturated sands under static and dynamic lateral loading. Lateral pile-soil stiffness is related to load level, frequency of excitation, and pile spacing. In static loading, but not in dynamic, there was uneven distribution of loads amongst piles in the multi-pile space. Using a proposed P-Y curve with appropriate parameters and a dynamic finite element analysis, predictions are in good agreement with model test results.
911372 Measurement of horizontal thrust on piles of a bridge abutment Thamm, B R; Wolf, A Proc Ist International Geoteclmical Seminar on Deep Foundations on Bored and Auger Piles, Ghent, 7-10 June 1988 P481-487. Publ Rotterdam: A A Baikema, 1988 Bridge abutment walls on the B5 highway in Germany were founded on a concrete pile cap at a site with deep, highly compressible soft clay and peat. Two of the large diameter bored piles were instrumented to monitor the horizontal thrust on the piles and the movements of the piles and the soils inbetween. Results are presented and compared to the German common practice in design and calculation of horizontal thrust on piles.
911373 End and shaft bearing capacity of piles evaluated separately out of static pile loading test results Van Impe, W F; Van den Broeck, M; Thooft, K Proc 1st iatermatio~d Geotecimical Seminar on Deep Foundations on Bored and Auger Piles, Ghent, 7-10 June 1988 P489-498. Publ Rotterdam: A A Balkema, 1988 The methods of Van Weele and of Leonards and Lovell for separating the end bearing and side friction components of total capacity of a pile determined from static loading tests are reviewed. Some modifications proposed to improve the practicality of these methods for tests on non-instrumented piles are reviewed and checked against load test data.
911374 Experimental research on end bearing capacity of bored and drilled piles Yi-Ming Gong; You-Nian Zhang; Chun Liu; Guo-Dong Ma Proc Ist lateraatiomd Geoteclmical Semimw on Deep Fotmdations on Bored and Anger Piles, Gbeat, 7-10 June 1988 P499-505. Publ Rotterdam: A A Balkema, ]988 Load tests were performed in Fujian, China, on instrumented large diameter bored piles, with end bearing strata of bedrock, residual soils, and clay. Loads ranged from 7200-16000kN. Unless the bearing stratum was hard rock, shaft resistance was the major component of pile capacity. End bearing capacity was generally smaller than predicted, attributable to disturbance effects during pile construction.
© 1991 Pergamon Press plc. Reproduction not permitted