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引言为提高抗震结构基底的水平柔性,已提出过很多建议。虽然分析证明,某些建议的系统能在一定程度上减小整个结构的地震荷载但由于阻尼不足而导致过量的基底位移,地震荷载减小很少,P-⊿力很高,还有过量的风位移,因此它们往往是不实用的。1970年,新西兰物理和工程实验室着手研制用于抗震建筑的特殊部件,主要的工作是研制各种实用的滞变阻尼器。起初以塑性变形的实体钢梁为基础,后来扩大到包括塑性变形的铅塞,已经将这些滞变阻尼器与柔性支座,通常是层状橡胶支承
Introduction Many suggestions have been made to improve the horizontal flexibility of the anti-seismic structural substrate. Although the analysis shows that some proposed systems can reduce the seismic load of the entire structure to a certain degree but excessive base displacement due to insufficient damping, the seismic load is reduced little, the P-force is high, and there is an excess Wind displacement, so they are often not practical. In 1970, the New Zealand Institute of Physics and Engineering set out to develop special components for earthquake-resistant construction. The main task was to develop a variety of practical hysteretic dampers. Initially based on plastic deformed solid steel beams and later expanded to include plastic deformation lead plugs, these dampers have been supported with flexible supports, usually laminated rubber