建筑抗震韧性设计中减隔震技术的应用研究

STUDY ON THE APPLICATION OF SEISMIC ENERGY DISSIPATION AND ISOLATION TECHNIQUES IN SEISMIC RESILIENCE DESIGN OF BUILDINGS

  • 摘要: 减隔震技术可有效降低建筑结构的地震损伤,但传统设计主要关注结构安全,对考虑震后功能损失、功能恢复时间等抗震韧性指标的设计方法仍需进一步研究。本文提出两个阶段的建筑抗震韧性设计方法,并以一栋五层钢筋混凝土框架教学楼为对象,对抗震、减震和隔震三种设计方案进行对比研究。以各地震水准下结构预期损伤状态为目标实现结构设计,以建筑震后功能目标完成非结构构件和设备设计。评估建筑功能恢复时间,对震后修复提出可行建议,对比分析三种设计方案的主体结构工程量及其经济性。结果表明,采用减隔震技术可更快实现建筑的抗震韧性目标,并降低建造成本,相较于抗震建筑,减震建筑和隔震建筑的主体结构成本分别降低了6.45%和6.53%。研究结果揭示减隔震技术在建筑抗震韧性设计方面具有明显优势。

     

    Abstract: Seismic energy dissipation and isolation techniques can effectively mitigate earthquake-induced damage to buildings. However, traditional aseismic design primarily focuses on structural safety, and the design methods that incorporate seismic resilience indicators, such as post-earthquake functional loss and functional recovery time, still require a further development. A two-stage seismic resilience design method for buildings is thusly proposed and applied to a five-storey reinforced concrete frame teaching building to compare three design schemes: aseismic design, seismic energy dissipation design, and seismic isolation design. The structural design is calibrated to achieve expected damage states under multiple seismic intensity levels, while nonstructural components and equipment are engineered to satisfy post-earthquake functional goals. The functional recovery time is assessed, feasible repair strategies are proposed, and main structural quantities and economic performances among the three schemes are compared. Research results show that seismic energy dissipation and isolation techniques accelerate the achievement of seismic resilience goals while reducing construction costs. Compared to aseismic design, the main structural costs of seismic energy dissipation design and seismic isolation design are reduced by 6.45% and 6.53%, respectively. These findings underscore the superior benefits of employing seismic energy dissipation and isolation techniques in constructing resilient buildings.

     

/

返回文章
返回