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以宁波大榭二桥为例,采用有限元ANSYS程序,分析了考虑行波效应下大跨斜拉桥的地震反应,并与一致激励作用下的结果做了比较。分析表明,不考虑行波效应对斜拉桥的主梁不利,而对塔底、墩底内力是偏安全的。
Taking the Daxie Bridge in Ningbo as an example, the finite element ANSYS program is used to analyze the seismic response of the long - span cable - stayed bridge considering the traveling wave effect. The results are compared with those obtained by the consistent excitation. The analysis shows that the internal force of the tower bottom and the pier bottom is not safe without considering the traveling wave effect on the main girder of the cable-stayed bridge.