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Advances in Concrete Construction
  Volume 7, Number 3, May 2019, pages 131-141

A study on the effects of vertical mass irregularity on seismic performance of tunnel-form structural system
Vahid Mohsenian and Ali Nikkhoo

    Irregular distribution of mass in elevation is regarded as a structural irregularity by which the modes with high energy levels are excited and in addition, it can lead the structure to withstanding concentration of nonlinear deformations and consequently, suffer from unpredictable local or global damages. Accordingly, with respect to the lack of knowledge and insight towards the performance of concrete buildings making use of tunnel-form structural system in seismic events, it is of utmost significance to assess seismic vulnerability of such structures involved in vertical mass irregularity. To resolve such a crucial drawback, this papers aims to seismically assess vulnerability of RC tunnel-form buildings considering effects of irregular mass distribution. The results indicate that modal responses are not affected by building
Key Words
    tunnel-form structural system; performance level; irregular mass distribution; vertical irregularity; seismic reliability
Vahid Mohsenian and Ali Nikkhoo: Civil Engineering Department, University of Science and Culture, Tehran, Iran

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