許家婧,葉浩天,殷浩天,曹 慧,張邵峰
許家婧,葉浩天,殷浩天,等.鋼筋混凝土構件疲勞設計研究[J].混凝土與水泥制品,2022(7):50-54.
XU J J,YE H T,YIN H T,et al.Study on Fatigue Design Methods of Reinforced Concrete Components[J].China Concrete and Cement Products,2022(7):50-54.
鋼筋混凝土構件疲勞設計研究
許家婧,葉浩天,殷浩天,曹 慧,張邵峰
許家婧,葉浩天,殷浩天,等.鋼筋混凝土構件疲勞設計研究[J].混凝土與水泥制品,2022(7):50-54.
XU J J,YE H T,YIN H T,et al.Study on Fatigue Design Methods of Reinforced Concrete Components[J].China Concrete and Cement Products,2022(7):50-54.
摘 要:對比分析了國內外混凝土結構設計規范中關于疲勞設計的規定后發現:美國混凝土協會ACI 215R—74《疲勞荷載下混凝土結構設計規定》、日本土木工程學會JSCE 2007《混凝土結構設計規范》、我國GB 50010—2010《混凝土結構設計規范(2015年版)》均采用容許應力法進行鋼筋混凝土構件疲勞設計;美國公路運輸協會AASHTO LRFDUS—2017《高速公路橋梁設計規范》和歐洲CEB-FIP(2010)《混凝土結構規范》則采用疲勞極限狀態設計方法,考慮荷載和抗力系數,以結構使用壽命不超過失效壽命為原則進行鋼筋混凝土構件疲勞設計。在總結各國規范基礎上,提出了鋼筋混凝土構件的疲勞設計基本步驟,并進行了算例分析。
Abstract: Fatigue design codes of concrete structures from different countries were summarized and compared. It is found that the fatigue design methods are different. The American Concrete Institute standard ACI 215R—74 Considerations for Design of Concrete Structures Subjected to Fatigue Loading, Japan Society of Civil Engineers standard JSCE 2007Standard Specification for Concrete Structures and Chinese standard GB 50010—2010 Code for Design of Concrete Structures are based on allowable stress method. American Association of State Highway and Transportation Officials standard AASHTO LRFDUS—2017 Bridge Design Specifications and European Concrete Commission and International Prestressed Concrete Association standard CEB-FIP(2010) Model Code for Concrete Structures are based on fatigue limit state method, and the load and resistance coefficient are considered, and the fatigue design of reinforced concrete components is carried out on the principle that the service life of the structure does not exceed the failure life. In addition, the fatigue design procedures and the calculation example are provided.
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