Loading...

Response Evaluation of Reinforced Concrete Frames Designed for Earthquake Subjected to Blast Loading

Lezgi, Milad | 2016

584 Viewed
  1. Type of Document: M.Sc. Thesis
  2. Language: Farsi
  3. Document No: 48955 (09)
  4. University: Sharif University of Technology
  5. Department: Civil Engineering
  6. Advisor(s): Kazemi, Mohammad Taghi
  7. Abstract:
  8. Explosion as a physical phenomenon have various effects on the environment, including living organisms, surrounding buildings, equipment and infrastructure there. Due to such extreme loading conditions, efforts have been made during the past three decades to develop methods of structural analysis and design to resist blast loads. The analysis and design of structures subjected to blast loads require a detailed understanding of blast phenomena and the dynamic response of various structural elements. The most appropriate method for evaluating the behavior of structures under blast loading is performance approach which specifies the response of structures against explosion. It seems that structures designed for earthquake could be partly responsible for the effects of the explosion. This study examines several reinforced concrete structural frame, containing three, six and ten floors under blast loading by means of nonlinear dynamic analysis. The study is conducted in two stages: firstly, the local failure of first column in front of explosion was investigated and secondly, the response of structures under explosion was determined. Pressures and forces caused by the explosion were determined in Atblast, forces are applied to each structure in SAP2000. To determine the structural response, different amount of explosives have been applied at different distances on structures and those were compared with responses under earthquake. After analyses, it was found that mid-rise and high-rise structures having larger column sections are more resistant against localized failures rather than low-rise structures. With comparing the maximum roof displacement and maximum drift ratios caused by earthquake and explosions it was concluded that intense explosions can create great responses in low-rise buildings, even more than earthquake. Moreover, responses caused by a given earthquake in mid- and high-rise buildings are more significant than responses created by designed blasts. In addition, explosions were able to generate higher base shear compared with earthquake
  9. Keywords:
  10. Nonlinear Analysis ; Moment Resistance Frame ; Reinforced Concrete Frame ; Seismic Response ; Blast Loading ; Local Failure ; Spatial Moment Resisting Frame

 Digital Object List

 Bookmark

No TOC