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根据我国现役桥梁的实际情况,提出了一种客观、可行的桥梁安全性评价方法,即用模糊综合评判值来表征桥梁整体缺损状况,并建立多级模糊综合评判模型,为不同结构型式桥梁提供了统一的评价标准。该评定方法能够较好地反映在役桥梁的安全性状况,可以为桥梁结构的维修与加固提供管理和决策依据,评价结果简单直观。以西安市某铁路跨线桥的桥梁安全性评价为例,对该方法的实际应用予以说明。
According to the actual situation of the bridges in service in our country, an objective and feasible evaluation method of bridge safety is put forward. That is to say, fuzzy comprehensive evaluation is used to characterize the overall defect of bridges and to establish a multi-level fuzzy comprehensive evaluation model for different types of bridges A unified evaluation criteria. The assessment method can well reflect the safety status of the existing bridges, and can provide the basis for the management and decision-making of the bridge structure maintenance and reinforcement. The evaluation results are simple and intuitive. Taking the bridge safety evaluation of a railway overpass in Xi’an as an example, the practical application of the method is illustrated.