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Establishing a constitutive finite element based-model to simulate the dynamic pile test
The Dynamic Pile Test (DPT) is now commonly used as a routine proof test of static pile capacity. It is used to beyond the obstacles of traditional pile tests. The DPT has some related initial parameters have to evaluate accurately to perform a successful test. These parameters are the weight of the hammer, corresponding hammer height, and the sufficient settlement to ensure that the tested pile reaches the desired ultimate capacity. The evaluation of these parameters mainly based on practice, so the need to simulate the test before the start is a need. And then, no need to calibrate the results of the DPT with SLT results. The Finite Element (FE) theory offers a powerful tool to simulate the actual stress and the corresponding movement of the tested pile. The FE has a large number of constitutive models to simulate the pile behavior under loading and the response of ground conditions. This paper simulates the DPT based on two steps. The first one is to establish a dynamic FE model to simulate the hammer strike on the pile top then get the pile settlement with corresponding ultimate load. The second step is to simulate the load-settlement trend of the pile to reach the ultimate pile settlement with the corresponding ultimate load. So, some constitutive FE based-models which used to simulate DPT has verified to know the most efficient one. The interface between the pile structure and surrounded soil has devolved to achieve the best result that very close to the full-scale test.
Establishing a constitutive finite element based-model to simulate the dynamic pile test
The Dynamic Pile Test (DPT) is now commonly used as a routine proof test of static pile capacity. It is used to beyond the obstacles of traditional pile tests. The DPT has some related initial parameters have to evaluate accurately to perform a successful test. These parameters are the weight of the hammer, corresponding hammer height, and the sufficient settlement to ensure that the tested pile reaches the desired ultimate capacity. The evaluation of these parameters mainly based on practice, so the need to simulate the test before the start is a need. And then, no need to calibrate the results of the DPT with SLT results. The Finite Element (FE) theory offers a powerful tool to simulate the actual stress and the corresponding movement of the tested pile. The FE has a large number of constitutive models to simulate the pile behavior under loading and the response of ground conditions. This paper simulates the DPT based on two steps. The first one is to establish a dynamic FE model to simulate the hammer strike on the pile top then get the pile settlement with corresponding ultimate load. The second step is to simulate the load-settlement trend of the pile to reach the ultimate pile settlement with the corresponding ultimate load. So, some constitutive FE based-models which used to simulate DPT has verified to know the most efficient one. The interface between the pile structure and surrounded soil has devolved to achieve the best result that very close to the full-scale test.
Establishing a constitutive finite element based-model to simulate the dynamic pile test
Lecture Notes in Civil Engineering
Duc Long, Phung (editor) / Dung, Nguyen Tien (editor) / Elgamal, Ahmed (author)
2019-11-29
8 pages
Article/Chapter (Book)
Electronic Resource
English
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