大跨钢拱结构动力特性分析

摘要

On the background of a long--span steel--arch gymnasium in a university, Based on the theory of dynamic finite element, structure model is established by SAP2000 and the structure dynamic characteristics are obtained after analyzing the established model. Meanwhile, the influence degree of the related parameters to dynamic characteristics of structure is studied by changing the parameters of span, rise--span ratio, support condition and so on, which can provide a fundamental data to further research about similar steel arch structure.%本文以某高校钢拱结构体育馆为背景，基于动力有限元理论，采用SAP2000软件建立了结构有限元模型，对模型进行模态分析，得到该结构的动力特性。同时，通过改变结构模型相关参数（跨度，矢跨比，支座条件等）分析其对此结构动力特性的影响，为进一步深入研究此类钢拱结构的地震响应提供了基础性资料。