基于动态加权综合评价法的双层航道桥选型研究

Study of the Selection of Double-deck Channel Bridge Based on Dynamic Weighted Comprehensive Evaluation Method

双层航道桥设计过程中需要考虑的因素复杂多样,为了能够客观、合理、有效地进行桥梁结构选型,以苏台高速为工程背景,提出了动态加权综合评价法,分析并选取了结构冗余度、行车舒适性、抗震性能、经济性、耐久性、美学特性等6个综合评价指标,计算出不同桥型的综合评价分数。结果表明:系统化的动态加权综合评价模型能展现出各桥型方案的优缺点,为双层桥结构选型提供了科学方法,该方法可推广应用。

The factors to be considered in the design of double-deck channel bridges are complex and diverse.In order to select the bridge structure objectively,reasonably and effectively,a dynamic weighted comprehensive evaluation method is proposed based on the engineering background of Suzhou-Taiwan Expressway.Six comprehensive evaluation indexes,including structural redundancy,driving comfort,seismic performance,economy,durability and aesthetic characteristics,are analyzed and selected,and the comprehensive evaluation scores of different bridge types are calculated.The results show that the systematic dynamic weighted comprehensive evaluation model can show the advantages and disadvantages of each bridge type scheme which provides a scientific method worthy of promotion.