Rights statement: This is the author’s version of a work that was accepted for publication in Construction and Building Materials. Changes resulting from the publishing process, such as peer review, editing, corrections, structural formatting, and other quality control mechanisms may not be reflected in this document. Changes may have been made to this work since it was submitted for publication. A definitive version was subsequently published in Construction and Building Materials, 279, 2021 DOI: 10.1016/j.conbuildmat.2021.122394
Accepted author manuscript, 2.12 MB, PDF document
Available under license: CC BY-NC-ND
Final published version
Research output: Contribution to Journal/Magazine › Journal article › peer-review
Research output: Contribution to Journal/Magazine › Journal article › peer-review
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TY - JOUR
T1 - Experimental investigation on the post-fire cyclic behavior of grouted sleeve connections
AU - Wang, T.
AU - Yu, M.
AU - Li, X.
AU - Yan, Z.
AU - Saafi, M.
AU - Ye, J.
N1 - This is the author’s version of a work that was accepted for publication in Construction and Building Materials. Changes resulting from the publishing process, such as peer review, editing, corrections, structural formatting, and other quality control mechanisms may not be reflected in this document. Changes may have been made to this work since it was submitted for publication. A definitive version was subsequently published in Construction and Building Materials, 279, 2021 DOI: 10.1016/j.conbuildmat.2021.122394
PY - 2021/4/12
Y1 - 2021/4/12
N2 - Grouted sleeve connections have been widely used in precast construction for joining rebar. In order to study their post-fire seismic performance, grouted sleeve connections, which are heated first to elevated temperature and then cooled down to room temperature, are tested under both monotonic and cyclic loadings. For comparisons, the same tests are also carried out on continuous rebar. The failure modes, skeleton curves and compression strength of the specimens are analyzed to study the influence of temperature on the seismic performance of the grouted sleeve connections. The results show that buckling occurs to all the grouted sleeve connections under cyclic loading. It is also found that the skeleton curves, compressive and buckling strength of both the connections and the continuous rebar decrease with the increase of temperature up to 600 °C. From the test results and on the basis of the GMP and GA hysteric constitutive models of steel, a modified model for cyclic constitutive law of the continuous rebar and the grouted sleeve connections is presented and validated. The results demonstrate that the modified model is capable of accurately simulating hysteretic properties of steel rebars and grouted sleeve connections.
AB - Grouted sleeve connections have been widely used in precast construction for joining rebar. In order to study their post-fire seismic performance, grouted sleeve connections, which are heated first to elevated temperature and then cooled down to room temperature, are tested under both monotonic and cyclic loadings. For comparisons, the same tests are also carried out on continuous rebar. The failure modes, skeleton curves and compression strength of the specimens are analyzed to study the influence of temperature on the seismic performance of the grouted sleeve connections. The results show that buckling occurs to all the grouted sleeve connections under cyclic loading. It is also found that the skeleton curves, compressive and buckling strength of both the connections and the continuous rebar decrease with the increase of temperature up to 600 °C. From the test results and on the basis of the GMP and GA hysteric constitutive models of steel, a modified model for cyclic constitutive law of the continuous rebar and the grouted sleeve connections is presented and validated. The results demonstrate that the modified model is capable of accurately simulating hysteretic properties of steel rebars and grouted sleeve connections.
KW - Constitutive model
KW - Cyclic loading
KW - Elevated temperature
KW - Grouted sleeve connections
KW - Seismic performance
KW - Buckling
KW - Compressive strength
KW - Cyclic loads
KW - Grouting
KW - Mortar
KW - Musculoskeletal system
KW - Rebar
KW - Seismic waves
KW - Seismology
KW - Compression strength
KW - Experimental investigations
KW - Hysteretic properties
KW - Monotonic and cyclic loading
KW - Precast construction
KW - Seismic Performance
KW - Sleeve connections
KW - Concrete construction
U2 - 10.1016/j.conbuildmat.2021.122394
DO - 10.1016/j.conbuildmat.2021.122394
M3 - Journal article
VL - 279
JO - Construction and Building Materials
JF - Construction and Building Materials
SN - 0950-0618
M1 - 122394
ER -