Collapse of a reinforced concrete building with insufficient diaphragm and discussion on diaphragm strengthening for avoiding such failures

Sener Kolemenoglu*, Alper Ilki*

*Corresponding author for this work

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

Abstract

Structural integrity is one of the key issues during the design of a proper lateral force resisting system for structures (i.e. against seismic actions). Therefore, proper design and construction of diaphragms are extremely critical if “rigid diaphragm” assumption is made during structural analyses. Seismic events show that insufficient diaphragms, failing to transfer seismic forces properly to vertical structural members as foreseen during design, are among the reasons causing collapse of buildings. In this paper, observations on a 17-story reinforced concrete (RC) building that lost its integrity and collapsed mainly due to insufficient diaphragm action during the 2023 Turkey Earthquakes, are presented. Furthermore, approach for strengthening of the diaphragm that could have avoided the total collapse of the building is discussed.

Original languageEnglish
Title of host publicationReConStruct
Subtitle of host publicationResilient Concrete Structures - Proceedings of the 20th fib Symposium, 2024
EditorsRichard S. Henry, Alessandro Palermo
Publisherfib. The International Federation for Structural Concrete
Pages695-706
Number of pages12
ISBN (Print)9782940643257
Publication statusPublished - 2024
Event20th fib Symposium on ReConStruct: Resilient Concrete Structures, 2024 - Christchurch, New Zealand
Duration: 11 Nov 202413 Nov 2024

Publication series

Namefib Symposium
ISSN (Print)2617-4820

Conference

Conference20th fib Symposium on ReConStruct: Resilient Concrete Structures, 2024
Country/TerritoryNew Zealand
CityChristchurch
Period11/11/2413/11/24

Bibliographical note

Publisher Copyright:
© fédération internationale du béton (fib).

Keywords

  • 2023 Turkey Earthquakes
  • Collapse Mechanism
  • Diaphragm
  • Reinforced Concrete
  • Strengthening

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