接着，根据层次分析法原理，建立了城市混凝土梁式桥健康状况评估的整体递阶层次结构模型，计算得到各指标的权重；
Then, a hierarchy health assessment model is established based on the systematic analysis of existing city concrete beam bridge, and the weight of bottom indexes are worked out.
跨座式单轨PC(预应力混凝土)轨道梁桥结构具有承重、导向及稳定的作用。
Straddle type single track beam of Press Steel Concrete (PC) possess the action of bearing, orienting and stabilizing.
对于高烈度地震区大跨桥梁的设计推荐了一种全新的桥式方案——空腹式箱梁连续刚构，该结构是钢管桁架和预应力混凝土板的组合结构。
The author recommends a brand new long-span bridge structure in high intensity earthquake areas—consecutive box girder rigid frame bridge with hollow abdomen.
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