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自1990年以来,钢管混凝土拱桥在中国得到了迅速发展。有关方面的研究多集中在静力特征、温度应力及安装技术方面,而关于这些桥梁动力特性的研究则不多。新西海桥是日本第一座公路钢管混凝土拱桥。利用桥梁结构有限元模型及单车模型,分析了桥梁在移动车辆荷载作用下的动力响应,阐述了其响应特征和响应级别。分析结果表明,新西海桥的主桥及人行桥在移动车辆荷载的作用下均具有较好的动力性能。
Concrete-filled steel tube arch bridges have been rapidly developed in China since 1990. Most researches focus on the static characteristics, the temperature stress and the installation technology. However, there are not many studies on the dynamic characteristics of these bridges. New West Sea Bridge is Japan’s first highway CFST arch bridge. The dynamic response of the bridge under the load of moving vehicles is analyzed by using the bridge finite element model and the bicycle model. The response characteristics and response level of the bridge are expounded. The analysis results show that the main bridge and footbridge of Xinxihai Bridge have good dynamic performance under the action of moving vehicle load.