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Analysis of Lateral Head Movements of CIP Piles
Prototype lateral load tests were performed on two sets of 4–400mm cast-in-situ concrete piles at two different locations to verify the validity of theoretical approaches for predicting pile head movements and the empirical relations between soil elastic moduli (Es) and N values from SPT. To this end, the load-displacement curves obtained from the lateral load tests are compared with Chang, Randolph, and p-y curve methods. For the linear methods, such as Chang and Randolph, empirical constants of Es/N are varied from 7 to28 as suggested in various references. As a result of comparisons, it is known that the linear methods can predict the pile head movements within the usual range fairly well, if appropriate empirical values of Es/N are adopted. The p-y curve method predicts the pile head movements consistently in a conservative way. In average, the predicted loads by the p-y method for given pile head displacements are about 70% of the minimum values of the test results for the same displacements. For the prediction of ultimate lateral resistances of piles, it is found that Broms' method could give too small values compared to the actual ultimate resistances depending upon the types of soils where the piles are embedded.
Analysis of Lateral Head Movements of CIP Piles
Prototype lateral load tests were performed on two sets of 4–400mm cast-in-situ concrete piles at two different locations to verify the validity of theoretical approaches for predicting pile head movements and the empirical relations between soil elastic moduli (Es) and N values from SPT. To this end, the load-displacement curves obtained from the lateral load tests are compared with Chang, Randolph, and p-y curve methods. For the linear methods, such as Chang and Randolph, empirical constants of Es/N are varied from 7 to28 as suggested in various references. As a result of comparisons, it is known that the linear methods can predict the pile head movements within the usual range fairly well, if appropriate empirical values of Es/N are adopted. The p-y curve method predicts the pile head movements consistently in a conservative way. In average, the predicted loads by the p-y method for given pile head displacements are about 70% of the minimum values of the test results for the same displacements. For the prediction of ultimate lateral resistances of piles, it is found that Broms' method could give too small values compared to the actual ultimate resistances depending upon the types of soils where the piles are embedded.
Analysis of Lateral Head Movements of CIP Piles
Jeon, Kyung-Soo (author) / Kim, Jeong-Hwan (author) / Kim, Sung-Hwan (author) / Kim, Myoung-Mo (author)
Geo-Denver 2000 ; 2000 ; Denver, Colorado, United States
2000-07-17
Conference paper
Electronic Resource
English
Analysis of Lateral Head Movements of CIP Piles
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