Shear behavior of headed stud connectors in steel-MPC based high strength concrete composite beams

Jing Zhang; Xiamin Hu; Junyi Wu; Yun Mook Lim; Shuhong Gong; Renwei Liu

doi:10.1016/j.engstruct.2021.113302

Shear behavior of headed stud connectors in steel-MPC based high strength concrete composite beams

Jing Zhang, Xiamin Hu, Junyi Wu, Yun Mook Lim, Shuhong Gong, Renwei Liu

Department of Civil and Environmental Engineering

Research output: Contribution to journal › Article › peer-review

7 Citations (Scopus)

Abstract

In this paper, magnesium phosphate cement (MPC) based high strength concrete (HSC) was first introduced into steel–concrete composite beams due to its better durability, good antirust performance, high early strength and eco-friendly. Twenty-four push-out specimens were conducted to examine the static behavior of headed stud connector in steel-MPC based HSC composite beams, including 21 MPC based concrete specimens and 3 normal concrete specimens. The failure modes, load-slip behavior, ductility, shear stiffness and shear capacity of stud connector were investigated. The effect of stud height, stud diameter, concrete strength and concrete type were also discussed. The test results showed that the shear behavior was greatly improved with the increase of the stud diameter. The aspect ratio, concrete strength and type had minor effect on the shear capacity of stud embedded in MPC based HSC concrete, while the shear stiffness and ductility were obviously affected. Furthermore, according to the existing equations and current design codes, the test results and calculated results of shear stiffness, load-slip behavior and shear capacity were compared and analyzed. Finally, an empirical equation considering stud diameter was put forward to assess the load-slip relationship of headed stud embedded in MPC based HSC.

Original language	English
Article number	113302
Journal	Engineering Structures
Volume	249
DOIs	https://doi.org/10.1016/j.engstruct.2021.113302
Publication status	Published - 2021 Dec 15

Bibliographical note

Funding Information:
This study is supported by the National Key Research and Development Program of China (Grant No. 2017YFC0703405), China Scholarship Council (Grant No. 202008320411), Postgraduate Research & Practice Innovation Program of Jiangsu Province (Grant No. KYCX20_1008) and Cultivation Program for The Excellent Doctoral Dissertation of Nanjing Tech University (2020-08). These supports are gratefully acknowledged.

Publisher Copyright:
© 2021 Elsevier Ltd

All Science Journal Classification (ASJC) codes

Civil and Structural Engineering

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10.1016/j.engstruct.2021.113302

Cite this

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title = "Shear behavior of headed stud connectors in steel-MPC based high strength concrete composite beams",

abstract = "In this paper, magnesium phosphate cement (MPC) based high strength concrete (HSC) was first introduced into steel–concrete composite beams due to its better durability, good antirust performance, high early strength and eco-friendly. Twenty-four push-out specimens were conducted to examine the static behavior of headed stud connector in steel-MPC based HSC composite beams, including 21 MPC based concrete specimens and 3 normal concrete specimens. The failure modes, load-slip behavior, ductility, shear stiffness and shear capacity of stud connector were investigated. The effect of stud height, stud diameter, concrete strength and concrete type were also discussed. The test results showed that the shear behavior was greatly improved with the increase of the stud diameter. The aspect ratio, concrete strength and type had minor effect on the shear capacity of stud embedded in MPC based HSC concrete, while the shear stiffness and ductility were obviously affected. Furthermore, according to the existing equations and current design codes, the test results and calculated results of shear stiffness, load-slip behavior and shear capacity were compared and analyzed. Finally, an empirical equation considering stud diameter was put forward to assess the load-slip relationship of headed stud embedded in MPC based HSC.",

author = "Jing Zhang and Xiamin Hu and Junyi Wu and Lim, {Yun Mook} and Shuhong Gong and Renwei Liu",

note = "Funding Information: This study is supported by the National Key Research and Development Program of China (Grant No. 2017YFC0703405), China Scholarship Council (Grant No. 202008320411), Postgraduate Research & Practice Innovation Program of Jiangsu Province (Grant No. KYCX20_1008) and Cultivation Program for The Excellent Doctoral Dissertation of Nanjing Tech University (2020-08). These supports are gratefully acknowledged. Publisher Copyright: {\textcopyright} 2021 Elsevier Ltd",

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doi = "10.1016/j.engstruct.2021.113302",

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T1 - Shear behavior of headed stud connectors in steel-MPC based high strength concrete composite beams

AU - Zhang, Jing

AU - Hu, Xiamin

AU - Wu, Junyi

AU - Lim, Yun Mook

AU - Gong, Shuhong

AU - Liu, Renwei

N1 - Funding Information: This study is supported by the National Key Research and Development Program of China (Grant No. 2017YFC0703405), China Scholarship Council (Grant No. 202008320411), Postgraduate Research & Practice Innovation Program of Jiangsu Province (Grant No. KYCX20_1008) and Cultivation Program for The Excellent Doctoral Dissertation of Nanjing Tech University (2020-08). These supports are gratefully acknowledged. Publisher Copyright: © 2021 Elsevier Ltd

PY - 2021/12/15

Y1 - 2021/12/15

N2 - In this paper, magnesium phosphate cement (MPC) based high strength concrete (HSC) was first introduced into steel–concrete composite beams due to its better durability, good antirust performance, high early strength and eco-friendly. Twenty-four push-out specimens were conducted to examine the static behavior of headed stud connector in steel-MPC based HSC composite beams, including 21 MPC based concrete specimens and 3 normal concrete specimens. The failure modes, load-slip behavior, ductility, shear stiffness and shear capacity of stud connector were investigated. The effect of stud height, stud diameter, concrete strength and concrete type were also discussed. The test results showed that the shear behavior was greatly improved with the increase of the stud diameter. The aspect ratio, concrete strength and type had minor effect on the shear capacity of stud embedded in MPC based HSC concrete, while the shear stiffness and ductility were obviously affected. Furthermore, according to the existing equations and current design codes, the test results and calculated results of shear stiffness, load-slip behavior and shear capacity were compared and analyzed. Finally, an empirical equation considering stud diameter was put forward to assess the load-slip relationship of headed stud embedded in MPC based HSC.

AB - In this paper, magnesium phosphate cement (MPC) based high strength concrete (HSC) was first introduced into steel–concrete composite beams due to its better durability, good antirust performance, high early strength and eco-friendly. Twenty-four push-out specimens were conducted to examine the static behavior of headed stud connector in steel-MPC based HSC composite beams, including 21 MPC based concrete specimens and 3 normal concrete specimens. The failure modes, load-slip behavior, ductility, shear stiffness and shear capacity of stud connector were investigated. The effect of stud height, stud diameter, concrete strength and concrete type were also discussed. The test results showed that the shear behavior was greatly improved with the increase of the stud diameter. The aspect ratio, concrete strength and type had minor effect on the shear capacity of stud embedded in MPC based HSC concrete, while the shear stiffness and ductility were obviously affected. Furthermore, according to the existing equations and current design codes, the test results and calculated results of shear stiffness, load-slip behavior and shear capacity were compared and analyzed. Finally, an empirical equation considering stud diameter was put forward to assess the load-slip relationship of headed stud embedded in MPC based HSC.

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Shear behavior of headed stud connectors in steel-MPC based high strength concrete composite beams

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