An experimental study of dynamic bond-slip behaviors of plain steel barsin concrete at different strain rates

FU Yingqian; YU Xiaoru; DONG Xinlong; ZHOU Fenghua; LI Ping

doi:10.11883/bzycj-2018-0513

Volume 39 Issue 6

Jun. 2019

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Article Navigation > Explosion And Shock Waves > 2019 > 39(6): 064102

FU Yingqian, YU Xiaoru, DONG Xinlong, ZHOU Fenghua, LI Ping. An experimental study of dynamic bond-slip behaviors of plain steel barsin concrete at different strain rates[J]. Explosion And Shock Waves, 2019, 39(6): 064102. doi: 10.11883/bzycj-2018-0513

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FU Yingqian, YU Xiaoru, DONG Xinlong, ZHOU Fenghua, LI Ping. An experimental study of dynamic bond-slip behaviors of plain steel barsin concrete at different strain rates[J]. Explosion And Shock Waves, 2019, 39(6): 064102. doi: 10.11883/bzycj-2018-0513

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An experimental study of dynamic bond-slip behaviors of plain steel barsin concrete at different strain rates

doi: 10.11883/bzycj-2018-0513

FU Yingqian^{1, 2
,},
YU Xiaoru²,
DONG Xinlong²,
ZHOU Fenghua^{2
,
,},
LI Ping¹

1.
State Key Laboratory of Explosion Science and Technology, Beijing Institute of Technology, Beijing 100081, China
2.
MOE Key Laboratory of Impact and Safety Engineering, Ningbo University, Ningbo 315211, Zhejiang, China

Received Date: 2018-12-24
Rev Recd Date: 2019-01-22

Available Online: 2019-05-25

Publish Date: 2019-06-01

Abstract

Abstract

To investigate the effect of strain rate on the bond-slip behaviors of smooth steel bars in concrete, we conducted plain steel bar pullout tests from quasi-static to impact loading using a high-speed tensile test machine and obtained the whole bond-slip curves of the plane steel bar at different strain rate with reasonable designed stop devices and testing methods. The test results show that the bond strength increased obviously, and the failure mode transferred from pullout to splitting with the increase of the strain rate, that the dynamic increase factor（DIF） curve can be divided into two parts, those of the low and high strain rates, and that the DIF increased slowly with the increase of the strain rate at low strain rates, but increased sharply at high strain rates.
- strain rate,
- steel bar reinforced concrete,
- dynamic bond-slip behavior,
- dynamic increase factor（DIF） of pullout strength

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References(22)

References

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