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Low strain pile integrity testing for rock socketed bored piles in Sri Lanka

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dc.contributor.advisor Tilakasiri HS
dc.contributor.advisor De Silva LIN Kodithuwakku TH 2020 2020 2020
dc.description.abstract Low strain pile integrity testing has been available over several decades. It is the widely used method of pile testing to detect serious defects in piles. The transient dynamic response (TDR) method of low strain pile integrity testing needs pile top velocity and pile top force generated by a small handheld hammer hit. The velocity and force details are useful to estimate the pile condition near the top and the stiffness of pile-soil system Researchers have proposed that dynamic stiffness at low frequencies associates to the static stiffness of pile head. The linear region of load-settlement behaviour of a pile is described by the static stiffness. However, little attention has been paid to developing a relationship between static stiffness and dynamic stiffness. The carrying capacity of pile is considered as the most important issue in pile foundations. Load Testing is the most reliable approach to evaluate the carrying capacity of piles. However, load tests are rarely performed as it is costly, labour intensive and time dependent, but all the piles are subjected to low strain integrity tests. Following the testing results, this research proposes a relationship between dynamic stiffness and static stiffness of bored piles. It is intended to evaluate the allowable carrying capacity of piles with results of low strain pile integrity testing and high strength dynamic load testing. Finally, this research presents a simple methodology to estimate the allowable carrying capacity of piles using instrumented low strain pile integrity testing. The developed methodology will be verified using field load testing results. In addition to that, the success of implementing the TDR method on bored piles is proved by case studies. en_US
dc.language.iso en en_US
dc.subject CIVIL ENGINEERING-Dissertations en_US
dc.subject PILES-Testing en_US
dc.subject FOUNDATIONS-Piles en_US
dc.subject PILES-Pile Driving Analyser en_US
dc.subject PILES-Testing-Pile Integrity Testing en_US
dc.title Low strain pile integrity testing for rock socketed bored piles in Sri Lanka en_US
dc.type Thesis-Abstract en_US
dc.identifier.faculty Engineering en_US MEng in Foundation Engineering and Earth Retaining systems en_US
dc.identifier.department Department of Civil Engineering en_US 2020
dc.identifier.accno TH4180 en_US

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