Dede, Sahin; Gutiérrez-Urzúa, Fernando; Rossetto, Tiziana; Freddi, Fabio; (2024) Preliminary Field Observations of Tunnel-Form Building Damage from the February 2023 Türkiye Earthquakes. In: Proceedings of the 18th World Conference on Earthquake Engineering (18WCEE). International Association for Earthquake Engineering (IAEE)

Preview

Text Dede et al - WCEE2024 - Tunnel Form Seismic.pdf - Published Version Download (1MB) | Preview

Abstract

Tunnel-form buildings are a specific type of reinforced concrete (RC) structures constructed through the application of tunnel-formworks, which allow for the monolithic casting of a single story and repetitive use of the same formwork set for upper levels. Tunnel-form buildings are the predominant typology used in mass housing projects in Türkiye due to their relatively lower construction costs and shorter construction time, which stems from their construction technique. Furthermore, they are the primary choice of the public sector in the post-earthquake reconstruction process, as is the case with reconstruction efforts following the February 2023 Türkiye earthquakes. Turkish authorities have initiated mass housing projects adopting tunnel-form construction in earthquake-hit regions to address the high and urgent housing needs that emerged after the widespread devastation. Standardised designs are used for such structures considering different numbers of stories and seismicity levels. Such designs are typically based on force-based linear elastic procedures and rely on the behaviour factor and dominant vibration modes to estimate earthquake forces. The preliminary results from the post-earthquake field observations have shown that low- and mid-rise tunnel-form buildings exhibited better seismic performance than RC moment-resisting frame systems. While low- and mid-rise tunnel-form buildings have demonstrated high-seismic performance, some drawbacks and limitations may characterise the design of the high-rise ones. This paper describes and critically discusses the seismic damage in high-rise tunnel-form buildings resulting from the earthquake sequences of February 2023, and observed during a field investigation in June 2023. The fieldwork focused on mid- and high-rise tunnel-form buildings and covered the most severely affected provinces: Hatay, Kahramanmaraş, Adıyaman, Malatya, and Gaziantep. The present paper focuses on two case study structures from mass housing projects in Gaziantep and Hatay. Detailed field surveys were conducted to collect data on structural damage and failure modes. The findings contribute to understanding the seismic behaviour of high-rise tunnel-form buildings, shedding light on the shortcomings of their seismic design.

Download activity - last month

Export as XMLJSONCSV

Download activity - last 12 months

Export as XMLCSVJSON

Downloads by country - last 12 months

Export as CSVJSONXML

Archive Staff Only

View Item