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近年来,钢结构越来越多地应用于雕塑类等特种结构工程中,此类钢架结构的变形及受力要求高,且为空间受力,结构设计难度增加。以某特种钢结构雕塑为工程背景,利用有限元软件SAP2000建立结构的三维模型,考虑不同荷载工况,对模型进行模态分析,获得其振动模态及其基本自振周期,通过其模态周期来研究结构的整体动力特性。通过分析得到的结构构件应力比和现场采用钢弦式表面应变测量法监测得到的结果均符合规范要求。另外,对下部基础、承台梁、柱及厚板进行分析和设计,并验算基础的抗倾覆能力;钢结构设计中,节点的连接尤为重要,结合该钢结构工程,对节点的设计进行了探讨。该钢架结构的分析与设计,可为同类钢结构工程提供参考。
In recent years, more and more steel structures are used in special structural projects such as sculptures. The deformation and force requirements of such steel structures are high, and they are space-constrained and the structural design is more difficult. Taking a special steel structure sculpture as the engineering background, the finite element software SAP2000 is used to build a three-dimensional model of the structure. The modal analysis of the model is carried out considering different load conditions to obtain its vibration mode and its basic natural vibration period. Period to study the overall dynamic characteristics of the structure. The stress ratio of the structural members obtained by the analysis and the field monitoring results obtained by using the steel wire surface strain measurement meet the specifications. In addition, the lower foundation, cap girder, column and thick plate analysis and design, and checking the foundation of anti-overturning ability; steel structure design, node connection is particularly important, combined with the steel structure project, the node design Discussion. The analysis and design of the steel structure can provide reference for similar steel structure engineering.