碳化作用下基于可靠度的混凝土结构耐久性设计方法研究 |
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引用本文: | 吕清芳,金伟良. 碳化作用下基于可靠度的混凝土结构耐久性设计方法研究[J]. 工业建筑, 2008, 38(12) |
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作者姓名: | 吕清芳 金伟良 |
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作者单位: | 东南大学土木工程学院,浙江大学结构工程研究所 |
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基金项目: | 国家自然科学基金项目资助 , 国家高技术研究发展863计划资助 |
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摘 要: | 对碳化作用下基于可靠度的混凝土结构耐久性设计方法进行了研究。首先确定碳化作用对应的结构耐久性极限状态和可靠指标,然后选择碳化深度预测模型,以设计使用寿命模式建立失效概率方程,最后在满足结构设计使用年限的条件下综合确定结构与材料的耐久性指标,并给出不同环境条件下的计算实例。
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关 键 词: | 碳化 劣化模型 设计使用年限 极限状态 耐久性设计 |
STUDY ON THE DURABILITY DESIGN METHOD OF CONCRETE STRUCTURE UNDER CARBoNATION ON THE BASIS OF RELIABILITY |
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Abstract: | The durability design method of concrete structure under carbonation is studied based on structure reliability in this article. First the durability limit state and the reliability target are defined corresponding to carbonation. Second the failure probability expression of designed service life is established with adoption of proper prediction model of carbonation depth. Finally the durability indexes of structure and material are comprehensively determined under the request of service life. Some application examples are provided comparatively under different environmental conditions also. |
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Keywords: | carbonation degradation model designed service life limit state durability design |
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