臺灣博碩士論文加值系統

In this study, the effect of the different wave patterns on the reinforced soil wall were studied using a series of shaking table tests. Based on the different wave patterns, six reinforced soil wall models were constructed and loaded to failure using the same frequency and horizontal high peak acceleration.
The results obtained from the thesis are helpful to understand into the relative performance of geosynthetic-reinforced slopes under different waveforms used in the experiments. The results showed that the maximum horizontal slope displacement (Dmax) and HPGA curves are different with the wave patterns. The amplification factor (Am) indicated nonlinear decadence with horizontal peak ground acceleration (HPGA), this factor decreases with increasing HPGAs. Besides, the relationship of Amplification with HPGA can be used the logarithmic function lines. Normalized slope displacement (Dmax/v2maxHPGA) vs. ay/HPGA curves obtained this study have a different which based on the Newmark’s sliding theory.

TABLE OF CONTENTS
ABSTRACT I
TABLE OF CONTENTS II
LIST OF TABLES VI
LIST OF FIGURES VII
CHAPTER ONE INTRODUCTION 1
1.1 Introduction. 1
1.2 Shaking Table Test Set-up. 2
CHAPTER TWO LITERATURE REVIEW 5
2.1 Newmark’s Method (1965). 5
2.2 Cai and Bathurst (1996b) Empirical Approaches. 6
2.3 Huang et al (2003) 921 Earthquake Investigation. 7
2.4 Chi Chi (921) Earthquake. 8
2.5 Chopra (1995) Decay of Free Vibration test. 8
2.6 Yazdandoust et al (2017) Research on the Retaining walls using Shaking table test. 9
CHAPTER THREE EQUIPMENT AND MATERIALS 11
3.1 Backfill Soil. 11
3.2 Reinforcement Material. 11
3.3 Measurement Data Acquisition system. 11
3.3.1 Linear Displacement Meter. 11
3.3.2 Accelerometer. 12
3.3.3 Strain Gauge. 12
3.3.4 Modular Data Acquisition Control. 12
3.3.5 National Instruments Labview. 13
3.4 MTS system. 13
CHAPTER FOUR METHODOLOGY 21
4.1 The Effects of Boundary Conditions on the Model test. 21
4.2 Decay of Free vibration test. 22
4.3 White Noise test. 23
4.4 The Shaking Table test of the Reinforced Retaining wall. 23
4.5. The Experimental Wave patterns and the Results of wave simulation. 25
4.5.1 The Stepwise Intensified Sine waves. 25
4.5.2 The Sinusoidal Ellipse Wave. 25
4.5.3 The Chi-Chi Earthquake waves. 26
4.5.4 The Results of Wave simulation. 28
CHAPTER FIVE RESULTS 35
5.1 The Experimental Results of the Boundary Effect on the laminar sandbox. 35
5.2 Decay of Free Vibration test. 39
5.4 The Shaking Table Test Results of the retaining wall 47
5.5. The Results of Reinforcement wall displacement response 49
5.5.1 The relationship between Maximum lateral displacement (Dmax) and Horizontal peak ground acceleration (HPGA) 49
5.5.2 Normalized Slope Displacement. 52
5.5.3 The Model Wall deformation. 55
5.5.4 Horizontal Settlement of Backfill sand. 57
5.6 The Results of Reinforcement Wall acceration response. 58
5.6.1 The Wall Acceleration Response. 58
5.6.2 The Amplification Factor of the Reinforcement wall. 61
5.7 Reinforcement Forces and Failure Mechanisms. 66
5.7.1 Reinforcement Forces. 67
5.7.2 Dynamic Earth Pressure Coeficients. 70
5.8 Analysis of The Reinforced wall. 73
5.8.1 Arias Intensity 73
5.8.2 RMS Acceleraion 78
5.8.3 The Safety Factor. 88
5.8.4 Dynamic Earth Pressure Distribution. 93
CHAPTER SIX CONCLUSION 97
REFERENCES 99
APPENDIX 102

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