钢筋混凝土桥梁加固后时变可靠指标分析

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基金项目:

武汉市建设科研基金项目(200620)

STUDY ON THE TIME-DEPENDENT RELIABILITY INDEX OF CONSOLIDATED REINFORCED CONCRETE BRIDGES

1.
1. School of Civil Engineering,Wuhan University,Wuhan 430072,China;
2.
2. Management Center of Wuhan Road and Bridge,Wuhan 430050,China;
3.
3. Hubei Institute of Survey &Design for Water Resources &Water Power Engineering,Wuhan 410070,China

摘要: 在研究既有钢筋混凝土桥梁加固后时变可靠指标计算方法的基础上，以长江上某桥连续箱梁加固工程为例，应用ANSYS软件建立加固后桥梁的有限元分析模型，对影响加固后桥梁挠度的因素进行了敏感性分析，并采用响应面法对基于挠度分析的正常使用极限状态下结构的时变可靠指标进行了计算，对加固后桥梁结构剩余使用寿命进行了预测。
- 加固后钢筋混凝土桥梁 /
- 时变可靠指标 /
- 响应面法 /
- 有限单元法
Abstract: The time-dependent reliability index of the consolidated reinforced concrete bridges is investigated.A finite element model for a consolidated bridge on the Changjiang River is established,with which a sensitivity analysis is done for the factors impacting the deflection of the consolidated bridge.Based on the response surface method,the time-dependent reliability index of the bridge under serviceability limit state is calculated and the residual service life is predicted.
- consolidated concrete bridge in service /
- time-dependent reliability index /
- response surface method /
- finite element method