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中文摘要：
针对如何在耐久性评估中更为科学的处理信息的不完整和不确定性，提出了基于未确知集合的在役混凝土桥梁的耐久性综合评估模型，从两个层次、两种权重上阐述了该模型的优势，并通过实例说明、与其他评估方法相比，在不完整信息和不确定因素情况下，未确知综合评估能够更为客观的寻找耐久性规律，为桥梁的管理及维修加固提供科学合理的决策依据．
英文摘要：
For how to deal the information with deficiency and uncertainty in durability evaluation more rationally, the model of unascertained measure is used in the durability evaluation of existing concrete bridge and declared by example introducing the ascendancy of this model from two level and two weight. Compared with the other theories, unasceaained measure can find objectively the rule of durability reasonably under the deficient information and unasceaained factors and can supply more scientific and more reasonable decision foundation for the management and maintenance of the concrete bridge.
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