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Energy dissipation and performance assessment of double damped outriggers in tall buildings under strong earthquakes

机译：强大地震下高层建筑中双阻尼前抗原的能量耗散与性能评价

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The use of a single set of outriggers equipped with oil viscous dampers increases the damping ratio of tall buildings in about 6-10%, depending on the loading conditions. However, could this ratio be further increased by the addition of another set of outriggers? Should this additional set include dampers too? To answer these questions, several double damped outrigger configurations for tall buildings are investigated and compared with an optimally designed single damped outrigger, located at elevation 0.7 of the total building's height (h). Using free vibration, double outrigger configurations increasing damping up to a ratio equal to the single-based optimal are identified. Next, selected configurations are subjected to several levels of eight ground motions to compare their capability for avoiding damage under critical excitations. Last, a simplified economic analysis highlights the advantages of each optimal configuration in terms of cost savings. The results show that, within the boundaries of this study, combining a damped outrigger at 0.5h with a conventional outrigger at 0.7h is more effective in reducing hysteretic energy ratios and economically viable if compared with a single damped outrigger solution. Moreover, double damped outrigger configurations for tall buildings exhibit broader display of optimal combinations, which offer flexibility of design to the high-rise architecture.
机译：根据装载条件，使用配备有油粘浊阻尼器的一组配备有油压阻尼器的过分凝固器的阻尼比率在约6-10％上提高了高层建筑的阻尼比。但是，通过添加另一组外部引发剂，可以进一步增加这种比率？这个额外的套装也包括阻尼器吗？为了回答这些问题，研究了高层建筑的几种双重阻尼支出配置，并与最佳设计的单衰减的舷外臂进行比较，位于总建筑物高度（H）的高度0.7。使用自由振动，识别出高达等于单基最优的比率的双重突出配置增加。接下来，对所选配置进行多个级别的八个地面运动，以比较它们的能力，以避免在批判性激励下的损坏。最后，简化的经济分析突出了每个最佳配置在成本节省方面的优势。结果表明，在该研究的边界内，在0.7h时将脉冲突起与0.5h的常规剖面相结合，在减少滞后能量比和经济上的可行性时，如果与单个阻尼的突出溶液相比，则更有效。此外，高层建筑的双阻尼突破配置表现出更广泛的最佳组合显示，可为高层架构提供设计的灵活性。

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