声明
摘要
ABSTRACT
Table of Contents
List of Figures
List of Tables
CHAPTER ONE INTRODUCTION
1．1 Overview：
1．2 Research Objectives：
1．3 Outline of The Thesis：
CHAPTER TWO BACKGROUND
2．1 Overview of Bridge Carrying Capacity Evaluation：
2．2 Bridge Bearing Capacity Evaluation Methodologies：
2．3 Chinese Methodology：
2．3．1 Equations：
2．3．2 Calculation Load Bearing Capacity Coefficient (Z1)：
2．3．3 Load-Bearing Capacity Deterioration Factor (ξe)：
2．3．4 Cross-Section Reduction Factor (ξc，ξs)：
2．4．American(AASHTO) Bridges Rating Methodology：
2．4．1 Rating Equations：
2．4．2 Condition and System Factors (Φc，Φs)：
2．4．3 Live Load Factors
2．4．4 Levels of Bridges Rating
2．4．5 Live Load Models：
2．4．6 Previous studies：
2．5 British (Highways Agency) methodology：
2．5．1 Equations：
2．5．2 Assessment Resistance：
2．5．3 Assessment Load：
2．5．4 Levels of assessment：
2．5．5 Level 5 assessment：
2．5．6 Live Load Models：
2．6 Summary：
CHAPTER THREE EXPREMENTAL WORK
3．1 Bridge Samples：
3．2 The Quality Appearance Assessment：
3．3 Materials Tests：
3．4 Concrete Strength Test：
3．5 Concrete Carbonation Depth Test：
3．6 Concrete Cover Thickness Test：
3．7 Half-cell potential measurements：
3．8 Summary：
CHAPTER FOUR LOAD-BEARING CAPACITY RESULTS
4．1 Overview：
4．2 Chinese Methodologies Results：
4．2．1 Effect of Calculation Load Bearing Capacity Coefficient(Z1)：
4．2．2 Effect of Bridges Span Length：
4．2．3 Analysis of Carrying Capacity Results：
4．3 American (AASHTO) Methodology Rating Results：
4．3．1 Span Length：
4．3．2 Analysis of Rating Results：
4．4 British Methodology Results：
4．5 Comparisons of Load-Bearing Capacity Assessment Methodologies：
4．5．1 Comparison of Chinese Methodology with American and British Methodologies：
4．5．2 Comparison of AASHTO LFR and LRFR Methodologies with Highway Agency BD21 Methodology：
4．6 Summary：
CHAPTER FIVE LOAD TEST
5．1 Overview of Bridge Load Test：
5．2 Chinese Method：
5．2．1 Assessment of Structure Working Condition：
5．2．2 Computation of Load Bearing Capacity Coefficient Z2 Based on the Load Test：
5．2．3 Carrying Capacity from the Load Test Equations：
5．3 American bridge rating from Load Test：
5．3．1 NCHRP Load rating through diagnostic load testing(Mertz 2000)：
5．4 Load Test Results：
5．4．1 The efficiency of static load test factor ηq：
5．4．2 Calibration coefficient ζ：
5．4．3 Dynamic Test：
5．5 Chinese bridge carrying capacity results：
5．6 American Brides load rating results：
5．7 Chinese and American methodologies comparison：
5．8 Summary：
Chapter Six CONCLUSIONS AND RECOMMENDATIONS
6．1 Conclusions：
6．2 Recommendations:
REFERENCES
Appendices
Acknowledgment
