Performance-based design of concrete structures: durability aspects
Performance-based design of concrete structures: durability aspects
复制标题
基于性能的混凝土结构设计：耐久性方面
DOI：
10.12989/sem.2010.35.4.535
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发表时间：
2010
影响因子：
2.2
通讯作者：
Z. Keršner
中科院分区：
文献类型：
--
作者：
B. Teplý;D. Vorechovská;Z. Keršner
在基于性能的设计（PBD），可持续性考虑和全寿命成本计算的背景下，时间是关键的变量和耐久性问题是明显的。近年来，这些事实得到了相当大的关注，这也反映在标准化活动中，例如：ISO 13823（2008）和新编制的《通用标准规范》（见2006年fib公告）。这两个文件都是基于概率的方法，并加强了耐久性结构的设计/评估。在实际意义上，对于从耐久性角度考虑的混凝土结构，PBD意味着识别和计算设计参数，例如使用寿命、混凝土保护层、混凝土质量以及相应极限状态（LS）背景下的相关可靠性指标值。这应该与平衡或优化长期经济后果、技术可行性、检查规划、维护和其他因素相结合。这种复杂的决策需要特殊的方法，软件工具，经验丰富的设计师和他/她与客户的密切合作。
In the context of performance-based design (PBD), sustainability considerations and whole life costing, time is the critical variable and durability issues are pronounced. These facts have gained considerable attention during recent years, which is reflected also in standardization activities, e.g.: ISO 13823 (2008) and the newly prepared fib-Model Code (see fib Bulletin 2006). Both these documents are based on probabilistic approaches and enhance the design/assessment of structures for durability. In a practical sense, for concrete structures considered from the standpoint of durability, PBD means identifying and calculating as design parameters e.g. the service life, concrete cover, quality of concrete and the relevant reliability index value in the context of the appropriate Limit State (LS). This should be done in conjunction with balancing or optimizing the long-term economic consequences, technological feasibility, planning of inspections, maintenance and other factors. Such complex decision making needs special methodology, software tools, an experienced designer and his/her close cooperation with the client.