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    周華強¹，段成曉¹，常立新²，徐德新¹，王  斌¹
    (1 武漢大學(xué)土木建筑工程學(xué)院，武漢430072; 2 武漢市路橋收費管理中心，武漢430000)

[摘要] 在研究既有鋼筋混凝土橋梁加固后時變可靠指標計算方法的基礎(chǔ)上，結(jié)合工程實例，應(yīng)用ANSYS軟件建立加固后橋梁的有限元分析模型，并采用響應(yīng)面法對基于撓度分析的正常使用極限狀態(tài)下結(jié)構(gòu)的時變可靠指標進行了計算，對加固后橋梁結(jié)構(gòu)剩余使用壽命進行了預(yù)測。
[關(guān)鍵詞] 加固后鋼筋混凝土橋梁；時變可靠指標；響應(yīng)面法；有限單元法

Study on the time-dependent reliability index of consolidated reinforced concrete bridges based on response surface method
Zhou Huaqiang¹, Duan Chengxiao¹, Chang Lixin², Xu Dexin¹, Wang Bin¹
(1 Wuhan University school of Civil Engineering, Wuhan 430072, China; 2 Wuhan Bridge toll Management Center, Wuhan 430000, China)

Abstract: The time-dependent reliability index of the consolidated reinforced concrete bridges is investigated.Afinite element model for the consolidated Wuhan Second Changjiang River Bridge is established. Based on the response surface method, the time-dependent reliability index of serviceability linut state is calculated and the residual service life is predicted.
Keywords: consolidated concrete bridge in service; time-dependent reliability index; response surface method; finite element method