A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
Axial behavior of engineered cementitious composites confined by circular steel tubes
Highlights 16 steel tube confined ECC and 4 steel confined concrete were tested by monotonic axial compression. Transverse confining mechanism of steel tube confined ECC was analyzed. A confining concrete model proposed by Richat was modified for steel tube confined ECC.
Abstract To investigate the triaxial compressive response of engineered cementitious composite (ECC), the method of providing passive confinement by steel tubes was adopted. Eight groups of circular steel tube confined ECC (STCE) and two groups of steel tube confined concrete (STCC) were prepared and tested by monotonic axial compression. The effect of ECC compressive strength and diameter-to-thickness ratio of steel tube on the failure mode, axial load versus displacement curves and strain development in steel tube of the specimens were analyzed. The test results revealed that the peak load and the corresponding displacement of STCE increased with the decrease of the diameter-to-thickness ratio of the steel tubes. For STCE specimens with identical diameter-to-thickness ratio of steel tube, the axial displacements corresponding to the peak loads decreased with the increase of ECC compress strength. The transverse confining mechanism of STCE is different from that of STCC because the fiber bridging effect in ECC results in the “self-confining” effect. Furthermore, a modified Richart mode was proposed to predict the axial carrying capacity of STCE.
Axial behavior of engineered cementitious composites confined by circular steel tubes
Highlights 16 steel tube confined ECC and 4 steel confined concrete were tested by monotonic axial compression. Transverse confining mechanism of steel tube confined ECC was analyzed. A confining concrete model proposed by Richat was modified for steel tube confined ECC.
Abstract To investigate the triaxial compressive response of engineered cementitious composite (ECC), the method of providing passive confinement by steel tubes was adopted. Eight groups of circular steel tube confined ECC (STCE) and two groups of steel tube confined concrete (STCC) were prepared and tested by monotonic axial compression. The effect of ECC compressive strength and diameter-to-thickness ratio of steel tube on the failure mode, axial load versus displacement curves and strain development in steel tube of the specimens were analyzed. The test results revealed that the peak load and the corresponding displacement of STCE increased with the decrease of the diameter-to-thickness ratio of the steel tubes. For STCE specimens with identical diameter-to-thickness ratio of steel tube, the axial displacements corresponding to the peak loads decreased with the increase of ECC compress strength. The transverse confining mechanism of STCE is different from that of STCC because the fiber bridging effect in ECC results in the “self-confining” effect. Furthermore, a modified Richart mode was proposed to predict the axial carrying capacity of STCE.
Axial behavior of engineered cementitious composites confined by circular steel tubes
Zhang, Yangxi (author) / Deng, Mingke (author) / Li, Ruizhe (author) / Dong, Zhifang (author) / Sun, Hongzhe (author)
Engineering Structures ; 224
2020-08-07
Article (Journal)
Electronic Resource
English
Compressive behavior of steel spiral confined engineered cementitious composites in circular columns
| SAGE Publications | 2020
FRP-Confined Circular Concrete-Filled Thin Steel Tubes under Axial Compression
| British Library Online Contents | 2011
FRP-Confined Circular Concrete-Filled Thin Steel Tubes under Axial Compression
| Online Contents | 2011