位于近断层区的某公路桥梁结构的抗震性能评估

论文摘要

为了评价公路桥梁结构在近断层地震动作用下的抗震性能,对一座典型的四跨公路桥梁进行了抗震分析和性能评价。利用SAP2000软件建立了该桥有限元模型,并考虑了土体结构相互作用。选取近断层地震动记录,选取人工波对桥梁进行动力分析。采用桥墩截面弯矩曲率分析,研究了桥墩塑性铰的转动能力。利用非线性时程分析方法,对公路桥梁的抗震性能进行了研究。主要研究工作、结论和建议包括:1.小震作用下,桥梁的固定墩屈服;其他桥墩均处于弹性工作状态。2.大震作用下,在固定方向上所有的盆式橡胶支座均破坏,不能满足其抗剪能力要求。3.研究表明,抗震装置在限制位移和避免支座破坏方面所起的重要作用。4.研究表明,近断层地震作用下的桥梁抗震性能评估可有助于提升桥梁的抗震性能。

论文目录

• ACKNOWLEDGEMENT
• 摘要
• ABSTRACT
• 1 INTRODUCTION
•   1.1 Problem statement
•   1.2 Purpose of the study
•   1.3 Research significance and Scope
•   1.4 Organization of thesis
• 2 LITERATURE REVIEW
•   2.1 China's Earthquakes and their effects on Bridges
•   2.2 Near fault ground motion
•   2.3 Seismic Actions
•   2.4 Seismic Retrofitting Systems
•     2.4.1 Bearing seat extensions
•     2.4.2 Restrainers
•     2.4.3 Bumpers
•     2.4.4 Stoppers
•   2.5 Bridge Bearings
•   2.6 Soil structure interaction
•     2.6.1 Soil Structure Interaction Analysis methods
•     2.6.2 Soil-spring stiffness
•     2.6.3 Pile stiffness
•   2.7 Summary
• 3 BRIDGE MODELING AND MOMENT CURVATURE ANALYSIS
•   3.1 Overview of the model
•   3.2 Material Modeling
•   3.3 Substructure elements modeling
•   3.4 Plastic hinge model
•   3.5 Superstructure Modeling
•   3.6 Load model
•   3.7 Establishment of finite element model
•   3.8 Modal analysis
•   3.9 Moment-curvature analysis of pier-pile section
•   3.10 Summary
• 4 SEISMIC RESPONSE ANALYSIS OF THE BRIDGE
•   4.1 Seismic response analysis criteria
•   4.2 Assessment of ground vibrations
•   4.3 Seismic response spectrum Analysis
•   4.4 Time history analysis
•   4.5 Seismic response analysis under EL1 earthquake action
•   4.6 Seismic response analysis under EL2 earthquake action
•   4.7 Seismic response analysis under E1 earthquake action
•   4.8 Summary
• 5 SEISMIC PERFORMANCE EVALUATION OF THE BRIDGE
•   5.1 EL1 seismic evaluation and analysis
•   5.2 EL2 seismic evaluation and analysis
•   5.3 E1 Seismic evaluation and analysis
•   5.4 Summary
• 6. CONCLUSIONS AND RECOMMENDATIONS
• REFERENCES
• appendix
• Author's profile
• Dataset for the Master's Thesis

文章来源

类型: 硕士论文

作者: NIYONSABA Innocent

导师: 刘林

关键词: 抗震性能,近断层地震动,非线性时程分析,反应谱分析,桥梁

来源: 北京交通大学

年度: 2019

分类: 基础科学,工程科技Ⅱ辑

专业: 力学,公路与水路运输

单位: 北京交通大学

分类号: O327;U442.55

总页数: 106

文件大小: 7422K

下载量: 24