A state-of-the-art review of prefabricated column-footing connections for seismic testing of re-used RC structural members
7th fib Congress on Structural Concrete 2050: Towards Carbon Neutrality, AI Design, and Robotic Construction, 2026, Lisbon, Portekiz, 15 - 19 Haziran 2026, ss.5614-5626, (Tam Metin Bildiri)
- Yayın Türü: Bildiri / Tam Metin Bildiri
- Basıldığı Şehir: Lisbon
- Basıldığı Ülke: Portekiz
- Sayfa Sayıları: ss.5614-5626
- Anahtar Kelimeler: construction and demolition waste, cyclic/seismic performance, post-disaster reconstruction, prefabricated column–footing connections, re-used reinforced concrete members
- Gazi Üniversitesi Adresli: Evet
Özet
Significant volumes of construction and demolition waste are generated following major earthquakes, creating pressure on waste management systems and increasing the need for sustainable reconstruction practices. At the same time, post-earthquake rebuilding requires large amounts of construction materials, often leading to shortages and environmental burdens. Directly assembling minimally damaged reinforced concrete structural members, such as columns and beams, recovered from earthquake- damaged buildings offers a sustainable solution to reduce waste and raw material consumption. However, effective implementation requires robust and repeatable connection techniques to integrate these salvaged RC members with new foundation systems. This paper reviews more than twenty experimental studies on prefabricated column-footing connection systems, evaluating their applicability for joining salvaged reinforced concrete columns to new foundation elements. Primary connection typologies, including socket bases, grouted sleeves, embedded steel plates, and ultra-high-performance concrete wet joints, are reviewed with respect to key seismic performance indicators, namely strength degradation, displacement ductility, and energy dissipation. By clarifying the relative strengths and limitations of different connection methods, the study supports future experimental research on re-used structural members while also contributing to the development of resource-efficient and resilient construction systems for seismic regions.