| 港口工程混凝土结构耐久性极限状态研究 |
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| 引用本文： | 杨国平,李荣庆,贡金鑫.港口工程混凝土结构耐久性极限状态研究[J].水运工程,2014(3):80-84. |
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| 作者姓名： | 杨国平 李荣庆 贡金鑫 |
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| 作者单位： | 中交水运规划设计院有限公司，北京 100007;中交水运规划设计院有限公司，北京 100007;大连理工大学海岸和近海工程国家重点实验室，辽宁 大连 116024 |
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| 基金项目： | 交通运输建设科技项目（2009328521076） |
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| 摘 要： | 通过对有关耐久性和耐久性极限状态定义的总结,结合港口工程结构特点,提出了可用于结构设计的港口工程混凝土结构的耐久性极限状态。对钢筋混凝土结构构件和采用螺纹钢筋作为预应力筋的梁、板,以承载力、挠度和纵向裂缝宽度分别劣化到某一限值作为控制的耐久性极限状态;对于采用钢绞线或钢丝作为预应力筋的预应力混凝土结构构件和采用螺纹钢筋作为预应力筋的桩,以钢筋脱钝作为耐久性极限状态。
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| 关 键 词： | 港口工程 耐久性极限状态 承载力可靠指标 挠度 纵向裂缝 |
Durability limit states for reinforced concrete structures of port engineering |
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| YANG Guo-ping,LI Rong-qing and GONG Jin-xin.Durability limit states for reinforced concrete structures of port engineering[J].Port & Waterway Engineering,2014(3):80-84. |
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| Authors: | YANG Guo-ping LI Rong-qing and GONG Jin-xin |
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| Institution: | CCCC Harbor Engineering Consultants Co., Ltd., Beijing 100007, China;CCCC Harbor Engineering Consultants Co., Ltd., Beijing 100007, China;State Key Laboratory of Coastal and Offshore Engineering, Dalian University of Technology, Dalian 116024, China |
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| Abstract: | The structural durability limit states which can be used in the structure design are proposed by
summarizing existing definition about durability and durability limit states and considering the characteristics of
harbor structures. For the ordinary RC elements and pre-stressing beams and slabs made with deformed bars, it is
proposed that the threshold values of decreased bearing capacity, increased deflection and longitudinal crack width
are taken as the control parameters for the structural durability limit states. For pre-stressing RC components with
steel wires and pre-stressing RC piles with deformed bars, the time at depassivation of reinforcement bars is taken
as the durability limit state. |
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| Keywords: | harbor engineering durability limit states reliability index for bearing capacity deflection longitudinal crack |
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