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华亚化纤门头为大跨悬挑钢结构,通过斜拉索将主体结构与桅杆连在一起,外形酷似翱翔的飞鸟,对主索施加主动预拉力,增加其结构刚度和应力刚度,使其满足在正常使用状态下尤其是在风振下位移和频率的要求。按照索梁体系,对整体结构进行几何非线性分析,分析结果表明,正确的拉索布置和选择合适的预拉力是此类项目设计的关键。
Huaya chemical fiberglass door is a large-span cantilevered steel structure. The main structure is connected with the mast through a stay cable. The shape of the flying bird is similar to the soaring flying bird. Active pre-tensioning is applied to the main cable to increase the structural rigidity and stress stiffness Meet the requirements under normal use, especially in the wind vibration displacement and frequency requirements. According to the beam-beam system, the whole structure is analyzed by geometric nonlinearity. The analysis results show that the correct cable arrangement and proper pre-tensioning are the key points of such project design.