TOPOLOGY OPTIMIZATION METHOD FOR HUMAN-INDUCED VIBRATION CONTROL OF LARGE-SPAN FLOORS UNDER RELIABILITY CONSTRAINT
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摘要:
安装调谐质量阻尼器是减轻大跨建筑楼盖人致振动的有效方法。阻尼器的参数、位置等通常基于经验确定，难以保证其结果为最优减振控制方案，且忽略了人致荷载的随机性。在此背景下，考虑人致荷载的随机性，采用拓扑优化方法提出一种可靠度约束下的调谐质量阻尼器减振控制方法。分析表明，将该方法用于某大跨结构的人致振动减振方案优化设计中，可获得良好的效果。
Abstract:The installation of tuned mass dampers (TMD) is an effective method to reduce human-induced vibration of large-span floors. The parameters and locations of the TMDs are usually empirically determined, which makes it difficult to ensure the most optimized result and to consider the stochastic feature of the human-induced load. A strategy for human-induced vibration serviceability design is proposed based on topology optimization. The stochastic feature of the human-induced vibration is considered, and the optimization constraints are determined from the perspective of dynamic reliability constraints. Satisfactory results are obtained by applying the method to the optimal design of the human-induced vibration using TMDs for a large-span structure.
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表 2 确定性结构优化结果
Table 2 Deterministic structure optimization results
荷载
工况TMD个
数/个系统峰值加速
度/(m/s2)布置方案结果图例 单个TMD
质量/kgTMD总
质量/kg
2 Hz
步行
荷载4 0.1498 
1085 4340 6 0.1454 
835 5010 8 0.1499 
630 5040 10 0.1494 
543 5430 12 0.1498 
480 5760 
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表 3 基于可靠度优化结果
Table 3 Optimization results based on reliability
荷载
工况TMD个
数/个结构可靠度 布置方案结果图例 单个TMD
质量/kgTMD总
质量/kg随机
步行
荷载4 0.9486 
2410 9640 6 0.9512 
1380 8280 8 0.9448 
1120 8960 10 0.9312 
950 9500 12 0.9237 
800 9600
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