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<p>Hill buildings behave differently under dynamic loading as compared to buildings located on plain ground. The low seismic resilience and poor construction practices in tough terrain like Himalayas ranges results in profound impact on human lives and substantial economic losses even during moderate earthquakes. In this paper, three different reinforced concrete (RC) frame models of hill buildings (low, lower mid and upper mid-rise) on a 30-degree slope are designed using SAP2000 based on Indian Standard IS 456:2000. The configuration, plan and height of building models are considered based on architectural built-up environment in Shimla city, located in Himalayan region. The Incremental Dynamic Analysis (IDA) is performed for the 11 selected ground motions (GMs) records. The maximum inter-storey drift (IDR) percentages at each storey level and dynamic capacity curves for all models were obtained through IDA. The fragility curves are drawn considering the suitable intensity measure (IM) against the different damage states (DM). The result shows that collapse probability increases with the number of storeys and more vulnerable along the slope direction. Furthermore, stakeholders are required to foster with the adequate provisions to make the hill buildings more resilient of highly seismic prone regions.</p>

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Seismic performance assessment of low and mid-rise hill buildings in Shimla city using incremental dynamic analysis

  • 期刊论文

  • 发表日期：

    2026年1月8日

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  • Dharmendra Kushwaha,
  • Neeraj Kumar,
  • Saraswati Setia

摘要

Hill buildings behave differently under dynamic loading as compared to buildings located on plain ground. The low seismic resilience and poor construction practices in tough terrain like Himalayas ranges results in profound impact on human lives and substantial economic losses even during moderate earthquakes. In this paper, three different reinforced concrete (RC) frame models of hill buildings (low, lower mid and upper mid-rise) on a 30-degree slope are designed using SAP2000 based on Indian Standard IS 456:2000. The configuration, plan and height of building models are considered based on architectural built-up environment in Shimla city, located in Himalayan region. The Incremental Dynamic Analysis (IDA) is performed for the 11 selected ground motions (GMs) records. The maximum inter-storey drift (IDR) percentages at each storey level and dynamic capacity curves for all models were obtained through IDA. The fragility curves are drawn considering the suitable intensity measure (IM) against the different damage states (DM). The result shows that collapse probability increases with the number of storeys and more vulnerable along the slope direction. Furthermore, stakeholders are required to foster with the adequate provisions to make the hill buildings more resilient of highly seismic prone regions.