【摘要】 为了对梁桥健康状况等级进行高效合理的评定,针对既有梁桥健康状况评定的问题,提出了将模糊层次综合评价法应用于梁桥评定的方法,即根据梁桥的结构特点建立了桥梁等级评定模型,采用层次分析法和群组判断的思想分别确定梁桥部件和影响因素的权重,基于现行评定标准科学地确定评价指标,利用二级模糊综合评价法评定梁桥的健康状况等级。以汕昆高速K87+481石角坝大桥为例进行计算,随机抽取汕昆高速公路中某段里程50座桥梁进行评价。结果表明,该评定模型对梁桥做出的评定等级与现行评定标准基本一致,计算效率高,对梁桥健康评定具有较好的适用性和可靠性。更多还原

【Abstract】 To efficiently and rationally evaluate the health state of beam bridges,a method of using multi-level fuzzy comprehensive evaluation was proposed in light of the problems in the health condition evaluation of existing beam bridges.In this method,the bridge evaluating model was established according to the structural characteristics of the beam bridge.The multi-level analytical method and the principle of group judgment were used respectively to determine the weights of beam bridge members and the influential factors.The evaluating criteria were scientifically determined based on the current evaluating standards,and the two-level fuzzy comprehensive evaluating method was used to evaluate the grades of the health condition of the beam bridge.The Shijiaoba Bridge(K87+481)on the Shantou-Kunming Expressway was cited as an example to do calculation and a number of 50 bridges on a section of the Shantou-Kunming Expressway were stochastically chosen to evaluate the health condition.The results indicate that the grades made according to this evaluating model basically agree with the current evaluating standards.The method is highly efficient and has good applicability and reliability in the health evaluation of beam bridges.更多还原