Evaluation of Maintained Load Test (MLT) and Pile Driving Analyzer (PDA) in measuring bearing capacity of driven reinforced concrete piles

• Main Authors: Moayedi, H., Mosallanezhad, M., Nazir, R.
• Format: Article
• Published: Springer New York LLC 2017
• Subjects: TA Engineering (General). Civil engineering (General)
• Online Access: http://eprints.utm.my/id/eprint/75652/; https://www.scopus.com/inward/record.uri?eid=2-s2.0-85028362771&doi=10.1007%2fs11204-017-9449-1&partnerID=40&md5=15e9e7854dab4b09dec789978c0e2919

Results of several full scale RC (reinforced concrete) pile load tests were studied and analyzed to create a comparison between the MLT (maintained load test) and PDA (pile driving analyzer) methods. The ultimate pile capacities derived from analysis of PDA were consistently higher than results from the MLT. A coefficient of 0.9 or a 10% reduction is suggested to be applied to values derived from PDA. It is also observed that the longer the time interval, the greater the shaft friction contribution is towards the pile capacity.