Estimation of Load Capacity of Pipe Piles in Sand Based on Cone Penetration Test Results

Author(s):  
Junhwan Lee ◽  
Rodrigo Salgado ◽  
Kyuho Paik
2007 ◽  
Vol 34 (10) ◽  
pp. 1222-1236 ◽  
Author(s):  
J K.C Shih ◽  
J R Omer ◽  
R Delpak ◽  
R B Robinson ◽  
C D Jones

An interactive computer program GLAMPILE has been developed for predicting the static load capacity of single piles formed in any soil profile. A variety of well-known prediction methods have been incorporated into the program, including (i) soil mechanics based formulae; (ii) direct and indirect cone penetration test (CPT) based methods with and without accounting for scale effects of the cone on pile base capacity; and (iii) a new CPT-based method that considers the effects of “critical depth” and shaft resistance distribution, although the method has only been calibrated for relatively short piles. GLAMPILE can cope with different pile types installed with or without a permanent casing. The program has been applied to predict the axial capacities of 11 piles that were recently installed in sand and statically loaded to failure. Results from the soil mechanics procedures indicate increases, on the in situ value, of the earth pressure coefficient by up to 37%, which lies within the range 0%–100% recommended in the literature. The best CPT-based prediction method applied yields a mean (µ) and coefficient of variation (COV) of predicted to measured pile head capacity (Puh(p)/Puh(m)) of 0.83 and 0.12, respectively. Scale effects are shown to be nominal for the cases analysed. An improved method is recommended, which yields µ = 1.00 and COV = 0.10, implying higher accuracy and reliability compared with the other methods.Key words: piles, cone penetration test, static and dynamic load test, modular program.


2014 ◽  
Vol 19 (1) ◽  
pp. 98-106 ◽  
Author(s):  
Mohammad Hassan Baziar ◽  
Alireza Saeedi Azizkandi ◽  
Armin Kashkooli

2011 ◽  
Vol 243-249 ◽  
pp. 2435-2438
Author(s):  
Dong Hai Jiang ◽  
Zhang Li ◽  
Nai Jian Ji ◽  
Yuan Yuan Hu

Based on the end bearing capacity and friction capacity obtained from high strain dynamic test, an adjusted equation was provided to calculate the pile load capacity. The equation was corrected again by pile load test results. Therefore, a suggested equation was finally established. Practical experience showed that, the corrected equation of cone penetration test method to estimate the load capacity of single pile performed better than that in the national code.


2013 ◽  
Vol 831 ◽  
pp. 336-340
Author(s):  
Qing Lei Sun ◽  
Yu Jing Hou ◽  
Xue Dong Zhang ◽  
Ren Peng

Density is one of the most important soil parameters. However, it is difficult to measure the density of soil model during centrifuge in flight. The cone penetration test (CPT) with robot provides a useful tool to determine the soil density of different models, as the cone resistance is closely related to soil density. This paper presents the correlation between cone resistance and relative density of sand, by doing centrifuge tests with robot CPT. Based on the test results, a formula that describes the correlation between cone resistance and sand relative density of Fujian standard sand is proposed for IWHR CPT attached to centrifuge robot.


2013 ◽  
Vol 53 (5) ◽  
pp. 671-679 ◽  
Author(s):  
Rui Jia ◽  
Takenori Hino ◽  
Jinchun Chai ◽  
Takaharu Hamada ◽  
Mitsugu Yoshimura

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