高烈度区城市高架桥钢桥墩抗震构造措施研究

Study on Earthquake Resistant Constructional Measures for Steel Bridge Pier of Urban Viaduct in High Intensity Area

随着我国大中城市对基本设施建设的大力发展,越来越多的钢结构桥梁被更为广泛应用。但我国公路和城市桥梁抗震设计规范中对钢桥墩应采用的抗震构造细节设计并未规定。为了使钢桥墩在高烈度区更为安全的应用,总结过去钢桥墩发生的震害现象并分析破坏机理。对世界上主流的抗震规范中关于钢桥墩抗震构造措施的规定进行比较,得出日本抗震规范较为全面的包含了钢桥墩应采用的抗震构造措施规定。以其为依据,举例说明其在国内一在建城市高架桥梁钢桥墩抗震设计上的具体应用细节,为今后同类桥梁抗震设计提供一定的借鉴作用。

With the great development of infrastructure construction in the middle and large cities of China,more and more steel structural bridges are widely used.However,thereis no specification of the detail design of earthquake resistant construction used for the steel bridge pier in the highway and urban bridge earthquake resistant design code of China In order to make the steel bridge pier more safely used in the high intensity area,the article summarizes the earthquake damage phenomenon of steel pier and analyzes its damage mechanism The article compares the specifications of steel pier earthquake resistant construction measures in the earthquake resistant code of the world,and introduces the specifications of earthquake resistant construction measures used for steel pier in the earthquake resistant code of Japan.Based on that,the article explains its detailed application in the earthquake resistant design of the steel pier of an urban viaduct under construction in China by an example The experience can be referred for the earthquake resistant design of the similar bridges in the future