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EPSRC Reference: GR/K84875/01
Title: EFFECT OF DISPLACEMENT RATE ON RESIDUAL SHEAR STRENGTH OF SOILS UNDER MONOTIC AND SEISMIC LOADING
Principal Investigator: Chandler, Professor R
Other Investigators:
Bommer, Professor J
Researcher Co-Investigators:
Project Partners:
Department: Civil & Environmental Engineering
Organisation: Imperial College London
Scheme: Standard Research (Pre-FEC)
Starts: 01 January 1998 Ends: 30 June 1999 Value (£): 70,236
EPSRC Research Topic Classifications:
Ground Engineering
EPSRC Industrial Sector Classifications:
No relevance to Underpinning Sectors
Related Grants:
Panel History:  
Summary on Grant Application Form
The sudden decrease in soil strength on the application of earthquake loading has been considered to be the cause of several catastrophic landslides. Understanding of this phenomena requires both the testing of soil samples at rates of displacement appropriate to earthquake loading, that is in excess of 1mm/second, and also shearing to large displacement, in excess of 500mm.The present proposal is to modify the Imperial College (IC) ring-shear apparatus so as to examine in detail the negative rate effects (reduction in strength with increased strain-rates) observed in recent work at IC on the strain-rate dependance of residual strength. In particular, the generation of pore water pressures during fast shearing will be examined in detail. This is seen as a step towards modelling real earthquake time-histories in the ring-shear apparatus.
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Organisation Website: http://www.imperial.ac.uk