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文章以某码头进港大门网架结构为研究对象,建立空间计算模型,并应用通用结构有限元分析程序进行该网架的自振特性及谱响应分析。结果表明,结构的自振以整体振型为主;结构的地震响应沿平面对称;结构在地震作用沿Y轴方向输入时的响应最大;网架的支座处及网架边缘处最薄弱。
In this paper, taking a port gate structure as a research object, the paper establishes a space calculation model and analyzes the natural vibration characteristics and spectral response of the grid using the general structure finite element analysis program. The results show that the natural vibration of the structure is dominated by the whole mode; the seismic response of the structure is symmetrical along the plane; the response of the structure is the greatest when the seismic action is input along the Y axis; the position of the support and the edge of the grid are the weakest.