【摘要】 提篮拱桥由于拱肋内倾使其结构特性发生变化,其地震响应不同于平行肋拱桥。本文在修正地震波的基础上,以郑州黄河桥的钢管混凝土提篮拱桥为例,采用计算机模拟的方法,建立桥梁地震响应分析的有限元模型,分析了非线性对提篮拱桥地震响应的影响。结果表明,材料非线性和几何非线性对提篮拱桥地震响应有比较大的影响,为了桥梁结构的安全,在抗震设计中必须考虑非线性的影响。更多还原

【Abstract】 As the change of the structural property caused by the arch rib introversion of the X-arch bridge, the seismic response is different from the parallel rib arch bridge. In this paper, taking a Zhengzhou YellowRiver steel-pipe concrete X-arch bridge as an example, based on the correcting of the seismic save, a finite element model is established to analysis the effect of nonlinearity to the seismic response of the X-arch Bridge. The result shows that the material nonlinearity and the geometric nonlinearity have a certain extent effect to the seismic response of the X-arch Bridge so that it is necessary to consider the effect of the nonlinearity during the anti-seismic design for the safety of the bridge.更多还原