[1] Wang Yongquan, Chen Tianjiao, Jing Jian,. Mechanical performance of the mixed post-installed connectionin low-strength concrete [J]. Journal of Southeast University (English Edition), 2017, 33 (2): 203-208. [doi:10.3969/j.issn.1003-7985.2017.02.013]

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Mechanical performance of the mixed post-installed connectionin low-strength concrete()

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Journal of Southeast University (English Edition)[ISSN:1003-7985/CN:32-1325/N]

Volumn:

33

Issue:

2017 2

Page:

203-208

Research Field:

Other Disciplines

Publishing date:

2017-06-30

Info

Title:

Mechanical performance of the mixed post-installed connectionin low-strength concrete

Author(s):

Wang Yongquan¹;  Chen Tianjiao¹;  Jing Jian²

¹College of Water Conservancy and Hydropower Engineering, Hohai University, Nanjing 210098, China
²College of Civil and Transportation Engineering, Hohai University, Nanjing 210098, China

Keywords:

low-strength concrete;  post-installed connection;  chemically-planted steel bars;  bearing capacity;  failure pattern

PACS:

TV331

DOI:

10.3969/j.issn.1003-7985.2017.02.013

Abstract:

Due to inadequate bearing capacity of the chemically-planted steel bar in low-strength concrete, a new mixed post-installed connection is proposed using small diameter anchoring steel bars and grouting materials together to anchor the main steel bar. To investigate the feasibility of the proposed post-installed connections, a series of pull-out tests with different anchors were conducted for comparison, including fully adhesive anchors, partially adhesive anchors, grouting material anchoring connection and the new mixed post-installed connection. The experimental results of the single steel bar pull-out test show that the mixed post-installed connection can effectively enhance the bearing capacity of post-installed steel bars in low-strength concrete. The bearing capacity is increased by nearly two times with no cone-type concrete failure compared with the fully adhesive anchor. The results show that adopting the new mixed post-installed connection can ensure that joint performance meets the requirements if the space dimension is available.

References:

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Memo

Memo:

Biography: Wang Yongquan(1981—), male, doctor, associate professor, wyq_hhu@hhu.edu.cn.
Foundation items: The National Natural Science Foundation of China(No.51409084), the Natural Science Foundation of Jiangsu Province(No.BK20130836).
Citation: Wang Yongquan, Chen Tianjiao, Jing Jian. Mechanical performance of the mixed post-installed connection in low-strength concrete[J].Journal of Southeast University(English Edition), 2017, 33(2):203-208.DOI:10.3969/j.issn.1003-7985.2017.02.013.

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