Effect of pile diameter on the modulus of sub grade reaction by teerawut juirnarongrit scott a ashford final report submitted to caltrans under contract no 59a0051 department of structural engineering university of california san diego la jolla california 92093 0085. This paper presents the results of a study on the effect of pile diameter on the initial modulus of subgrade reaction a series of ambient and impact vibration tests were performed on four different diameters of cast in drilled hole piles to determine the natural frequencies and damping of the soil pile systems. 3 was used by ashford and juirnarongrit 20 for modelling the dynamic response of piles at low strains to investigate the effect of pile diameter on the initial modulus of subgrade reaction . The direct method to estimate the modulus of subgrade reaction is plate load test that it is done with 30 100 cm diameter circular plate or equivalent rectangular plate after that we have to extrapolate the test value for exact foundation. Foundation size effect on modulus of subgrade reaction on sandy soils article pdf available in electronic journal of geotechnical engineering 172523 2530 january 2012 with 3589 reads
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