NPR钢筋与海工混凝土的粘结性能试验研究

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Abstract At present, the strength of steel bars studied and applied in China is still lower than that in western developed countries. At the same time, there is a common problem that the strength of steel bars increases but the ductility decreases. Therefore, the research and development of new high strength and high ductility steel bars is an effective way to solve the problem of building steel in China. In order to explore whether the NPR steel bars can be applied to concrete structure, this paper studies the bond performance between the NPR steel bar and marine concrete by central pull-out test. In this paper, the failure mode of the specimens was observed, and the influence of reinforcement type (NPR steel bars, ordinary steel bars), strength grade of marine concrete(C30F250, C40F250, C50F250), diameter of steel bars (8 mm, 18 mm) and bond length (5d, 7d) on bond strength and bond stress-slip curve was analyzed. The results show that the type of reinforcement has a significant influence on the failure mode, bond strength and bond stress-slip curve. When other conditions are the same, the bond strength of NPR steel bar is lower than that of ordinary steel bar, and the bond strength of NPR reinforcement increases with the decrease of bond length and the improvement of strength grade of marine concrete. Meanwhile, the three-stage bond slip constitutive model is used to fit the bond stress-slip curve. The results show that the three-stagment model can better describe the characteristics of the bond stress-slip curve of NPR steel bar and marine concrete.

Key words： NPR steel bar center pull-out test bond strength bond stress-slip curve bond-slip constitutive model

Published: 09 December 2021

CLC number:

TU375

Fund:This work was financially supported by the National Natural Science Foundation of China(51778310);Research and Innovation Team Project on Safety and Performance Improvement of Coastal Urban and Rural Construction Projects; Shandong “Double First-class” Construction Project-Civil Engineering.

About author:: Huaishuai Shang is currently a professor at Qingdao University of Technology, Qingdao, PhD tutor. He obtained his Ph.D. in civil engineering from Dalian University of Technology in 2007. He mainly engaged in the research of reinforced concrete structure, including durability of concrete, bond behavior between steel bar and concrete, failure criteria of concrete under complex stress state and bearing capacity of reinforced concrete members, etc. Up to now, he has published more than 70 peer-reviewed papers in international prestigious journals. He has obtained 10 invention patents authorized by China . He has received 5 Provincial Prizes and awards in his career.

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	SHANG Huaishuai
	SHAO Shuwen
	YUAN Shoutao
	FENG Haibao

Cite this article:

SHANG Huaishuai,SHAO Shuwen,YUAN Shoutao, et al. Experimental Study on Bond Performance of NPR Steel Bars and Marine Concrete Made[J]. Materials Reports, 2021, 35(z2): 228-235.

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http://www.mater-rep.com/EN/ OR http://www.mater-rep.com/EN/Y2021/V35/Iz2/228

1 Yang D, Dw B, Jsa B, et al. Engineering Structures, 2021,227,111464.
2 吴凯鑫. HFRB600级钢筋与高强混凝土粘结及搭接性能研究. 硕士学位论文, 郑州大学, 2020.
3 陈晨. 600 MPa级钢筋混凝土构件受力性能试验研究. 硕士学位论文, 昆明理工大学, 2016.
4 李可, 徐朝阳, 吴凯鑫, 等. 郑州大学学报(工学版),doi:10.13705/j.issn.1671-6833.2021.02.013.
5 李艳艳, 李晓清, 苏恒博. 土木建筑与环境工程, 2017, 39(2),19.
6 张建伟, 李晨, 冯曹杰, 等. 北京工业大学学报, 2019, 45(6),566.
7 GB/T228.1-2010.金属材料拉伸试验第1部分: 室温试验方法. 北京: 中国标准出版社,2016.
8 赵军, 王帅斌, 王自柯, 等. 建筑结构学报,doi:10.14006/j.jzjgxb.2020.0502.
9 王毅红, 苏顺, 董飞, 等. 建筑科学, 2020, 36(1),48.
10 王青, 向玄, 徐港, 等. 三峡大学学报(自然科学版), 2019, 41(2),68.
11 吴丽丽, 王慧, 杨畅涵, 等. 复合材料学报,doi:10.13801/j.cnki.fhclxb.20210207.001.
12 李志. 非标涂层钢筋与混凝土的粘结性能试验研究. 硕士学位论文, 沈阳工业大学, 2020.
13 杨超, 杨树桐, 戚德海. 工程力学, 2018, 35(S1),172.
14 黄一杰, 张宜健, 肖建庄, 等. 建筑结构学报, 2020, 41(S1),390.
15 欧阳煜, 赖校君. 工业建筑, 2007(5),77.
16 Eligehausen R, Popov E P, Bertero V V. Local bond stress slip relationship of deformed bars under generalized excitations. Ph.D. Thesis, Calif. The Univ, 1982.
17 Cosenza E, Manfredi G, Realfonzo R. “Non-Metallic (FRP) Reinforcement for Concrete Structures”-Proceedings of the Second International RILEM Symposium (FRPRCS-2). 1995.
18 Cosenza E, Manfredi G, Realfonzo R. Journal of Composites for Construction, 1997, 1(2),40.
19 Tighiouart B, Benmokrane B, Gao D. Construction and Building Mate-rials, 1998, 12(8),453.
20 高丹盈,谢晶晶,李趁趁. 郑州大学学报(工学版), 2002(1),1.
21 高丹盈,朱海堂,谢晶晶. 工业建筑, 2003(7),41.
22 郝庆多. GFRP/钢绞线复合筋混凝土梁力学性能及设计方法. 博士学位论文, 哈尔滨工业大学, 2009.