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以世界最高的电视塔——广州新电视塔为研究对象,进行了加速度传感器优化布置研究。为避免动力分析时大型稠密矩阵运算的问题,首先将三维有限元模型简化为等效串联多自由度体系;考虑到实际测点只能布置在结构的平动向不能布置在扭转向的问题,提出将平动向自由度看作主自由度,将扭转自由度看作副自由度,采用模型缩聚将副自由度缩聚掉的新思路,对比研究了Guyan法、Kuhar法、IRS法以及IIRS法的缩聚效果,得到了缩聚后的简化模型;分析了基于二重结构编码的广义遗传算法在电视塔传感器优化布置中的实施过程,进行了控制参数分析,最终给出了传感器的优化布置方案。
With the world’s tallest television tower - Guangzhou New TV Tower as the research object, the acceleration sensor optimization layout was studied. In order to avoid the problem of large-scale dense matrix operation in dynamic analysis, the three-dimensional finite element model is simplified to an equivalent series and multi-degree of freedom system. Considering that the actual measuring point can only be arranged in the structure, the translational direction can not be arranged in the torsional direction, Taking the degree of freedom of translation as the main degree of freedom and the torsional degree of freedom as the degree of sub-degree of freedom, a new idea of polycondensation of degree of freedom is obtained by model polycondensation. The polycondensation of Guyan, Kuhar, IRS and IIRS The simplified model after polycondensation has been obtained. The implementation of GA algorithm based on binary structure coding in TV tower sensor deployment has been analyzed, and the control parameters have been analyzed. Finally, the optimal layout of sensor has been given.