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Research of Diesel Hammer Piling Process Simulation

Author: ZengXiangLu
Tutor: HuangYanSheng
School: South China University of Technology
Course: Structural Engineering
Keywords: pile driving analyzes diesel hammer dynamical modeling wave equation method Object-oriented programming
CLC: TU473.16
Type: Master's thesis
Year: 2011
Downloads: 55
Quote: 0
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Abstract


As the complexity of geological conditions, coupled with the improper selecting of piling hammer-type, piling cases of failure have occurred frequently. With the implementation of dynamic testing of pile around the world, theory of stress waves has been applied in many fields in the quality detection of building foundation piles. People began to use theoretical analysis to obtain the stress distribution of pile before driving the actual pile. However, we lack domestic mature software to predict piling process. This paper used the traditional dynamics method and stress wave theory to establish a mathematical model, in order to program a practical software of simulative piling process.As for traditional dynamic method of modeling, the movement and force of the diesel hammer was analyzed detailedly during piling process. By considering the dynamic resistance of pile in the mathematical equation, the simulation results of the mathematical model is more reasonable.As for the method of theory of stress waves, numerical model of Diesel hammer has been established. By application of the principle of Wave equation, kinetic parameters of the concrete pile were calculated. The model and programming has been proved right through theory analysis and examples. The space mesh of velocity and displacement of pile partial and the transmit rules of stress wave in pile clearly reflect the transmit process of wave in pile.In this Paper, two different methods were used to study thoroughly the diesel hammer. A computer programming with convenient graphical user interface was prepared. Simulation results obtained from the analysis can provide references for the piling construction.

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CLC: > Industrial Technology > Building Science > Soil mechanics,foundation engineering > Foundation > Pile foundation and deep foundation > Pile > Pile test
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