TY - JOUR
T1 - Hybrid double tube sections utilising seawater and sea sand concrete, FRP and stainless steel
AU - Li, Ying Lei
AU - Zhao, Xiao Ling
N1 - Funding Information:
Thanks are due to the Australian Research Council (ARC) for providing financial support (DP160100739). The experiments were conducted in the Civil Engineering Laboratory at Monash University. The help from the laboratory staff Mr. Long Goh and Mr. Jeff Doddrell is greatly appreciated. Mr. Damian Carr from Bayside City Council is also appreciated for the permission to get sea sand and seawater from Brighton Beach in Melbourne.
Funding Information:
Thanks are due to the Australian Research Council ( ARC ) for providing financial support ( DP160100739 ). The experiments were conducted in the Civil Engineering Laboratory at Monash University. The help from the laboratory staff Mr. Long Goh and Mr. Jeff Doddrell is greatly appreciated. Mr. Damian Carr from Bayside City Council is also appreciated for the permission to get sea sand and seawater from Brighton Beach in Melbourne.
Publisher Copyright:
© 2020 Elsevier Ltd
PY - 2020/4
Y1 - 2020/4
N2 - This article presents an experimental and theoretical study on axially compressed hybrid double tube SWSSC (seawater and sea sand concrete) columns (DTCCs), which consists of FRP/SS (stainless steel) tubes and SWSSC. The structural behaviours of DTCCs (e.g., load-axial strain curves, dilation properties, loads carried by individual components) are discussed and compared with the corresponding concrete fully filled and double-skin tubes. It is found that the load carrying capacity of a DTCC with SS as inner tube can be estimated as the sum of the loads carried by the outer tube with encased concrete and that by the inner SS tube. On the other hand, the load in a DTCC with FRP as inner tube could be divided as the loads carried by the outer tube with encased annular concrete and by the confined inner FRP tube with encased core concrete. Finally, based on existing analysis-oriented models for concrete fully filled tubes, theoretical models are proposed to predict the load-axial strain curves of DTCCs, which shows reasonable accuracy as verified by the experimental results.
AB - This article presents an experimental and theoretical study on axially compressed hybrid double tube SWSSC (seawater and sea sand concrete) columns (DTCCs), which consists of FRP/SS (stainless steel) tubes and SWSSC. The structural behaviours of DTCCs (e.g., load-axial strain curves, dilation properties, loads carried by individual components) are discussed and compared with the corresponding concrete fully filled and double-skin tubes. It is found that the load carrying capacity of a DTCC with SS as inner tube can be estimated as the sum of the loads carried by the outer tube with encased concrete and that by the inner SS tube. On the other hand, the load in a DTCC with FRP as inner tube could be divided as the loads carried by the outer tube with encased annular concrete and by the confined inner FRP tube with encased core concrete. Finally, based on existing analysis-oriented models for concrete fully filled tubes, theoretical models are proposed to predict the load-axial strain curves of DTCCs, which shows reasonable accuracy as verified by the experimental results.
KW - Axial compression
KW - Double tube concrete column
KW - Fibre reinforced polymer (FRP)
KW - Seawater and sea sand concrete (SWSSC)
KW - Stainless steel (SS)
UR - http://www.scopus.com/inward/record.url?scp=85079102169&partnerID=8YFLogxK
U2 - 10.1016/j.tws.2020.106643
DO - 10.1016/j.tws.2020.106643
M3 - Journal article
AN - SCOPUS:85079102169
SN - 0263-8231
VL - 149
JO - Thin-Walled Structures
JF - Thin-Walled Structures
M1 - 106643
ER -