Scholarlink

<p>Seismic isolation is a key technique used in structural engineering to help buildings better resist earthquake forces. This study looks at how four different structural systems respond to seismic activity: a standard fixed-base model (NIB), a base-isolated system (BI), a mid-story isolation setup (MSI), and a newer hybrid design known as the New Staggered Story Isolated (NSSI) system. The analysis was carried out on a 16-story reinforced concrete building designed according to Indian seismic codes, using High Damping Rubber Bearings (HDRBs) for isolation. To evaluate performance, nonlinear time history analyses were run using ground motion records grouped by Peak Ground Velocity (PGV) into two categories: high intensity (40–130&#xa0;cm/sec) and low intensity (below 40&#xa0;cm/sec). The main parameters assessed included inter-story drift, overall displacement, story shear, and how much energy was absorbed during shaking. All the isolation systems performed noticeably better than the fixed-base structure. The NSSI model showed the most improvement in high PGV scenarios, cutting inter-story drift by up to 95.5%. Under low PGV events, the MSI system was most effective, achieving drift reductions up to 73.13%. The NSSI model also had the best energy dissipation and a fundamental period of 5.587&#xa0;s. Overall, the results suggest that hybrid isolation methods like the NSSI can adapt well to different levels of earthquake intensity, offering a promising approach for safer and more resilient building designs.</p>

错误：搜索内容不能为空，请输入英文关键词
错误：关键词超出字数限制，请精简
高级检索

Seismic performance of inter storey isolated and base isolated building

  • 期刊论文

  • 发表日期：

    2025年8月19日

查看全文
  • Patel Mihirkumar Ashokkumar,
  • Sneha Gupta,
  • Praveen Kumar Gupta

摘要

Seismic isolation is a key technique used in structural engineering to help buildings better resist earthquake forces. This study looks at how four different structural systems respond to seismic activity: a standard fixed-base model (NIB), a base-isolated system (BI), a mid-story isolation setup (MSI), and a newer hybrid design known as the New Staggered Story Isolated (NSSI) system. The analysis was carried out on a 16-story reinforced concrete building designed according to Indian seismic codes, using High Damping Rubber Bearings (HDRBs) for isolation. To evaluate performance, nonlinear time history analyses were run using ground motion records grouped by Peak Ground Velocity (PGV) into two categories: high intensity (40–130 cm/sec) and low intensity (below 40 cm/sec). The main parameters assessed included inter-story drift, overall displacement, story shear, and how much energy was absorbed during shaking. All the isolation systems performed noticeably better than the fixed-base structure. The NSSI model showed the most improvement in high PGV scenarios, cutting inter-story drift by up to 95.5%. Under low PGV events, the MSI system was most effective, achieving drift reductions up to 73.13%. The NSSI model also had the best energy dissipation and a fundamental period of 5.587 s. Overall, the results suggest that hybrid isolation methods like the NSSI can adapt well to different levels of earthquake intensity, offering a promising approach for safer and more resilient building designs.