RESEARCH ON ANCHORAGE LENGTH OF STEEL STRAND EMBEDDED IN ULTRA-HIGH-PERFORMANCE CONCRETE

XUAN Shuaifei; ZHENG Hui; LIANG Xuejiao

doi:10.13204/j.gyjz202003019

Volume 50 Issue 3

Mar. 2020

Turn off MathJax

Article Contents

Article Navigation > INDUSTRIAL CONSTRUCTION > 2020 > 50(3): 114-118,146

XUAN Shuaifei, ZHENG Hui, LIANG Xuejiao. RESEARCH ON ANCHORAGE LENGTH OF STEEL STRAND EMBEDDED IN ULTRA-HIGH-PERFORMANCE CONCRETE[J]. INDUSTRIAL CONSTRUCTION, 2020, 50(3): 114-118,146. doi: 10.13204/j.gyjz202003019

Citation:

XUAN Shuaifei, ZHENG Hui, LIANG Xuejiao. RESEARCH ON ANCHORAGE LENGTH OF STEEL STRAND EMBEDDED IN ULTRA-HIGH-PERFORMANCE CONCRETE[J]. INDUSTRIAL CONSTRUCTION, 2020, 50(3): 114-118,146. doi: 10.13204/j.gyjz202003019

Citation:

PDF( 2958 KB)

RESEARCH ON ANCHORAGE LENGTH OF STEEL STRAND EMBEDDED IN ULTRA-HIGH-PERFORMANCE CONCRETE

doi: 10.13204/j.gyjz202003019

College of Civil Engineering, Hunan University of Technology, Zhuzhou 412007, China

Received Date: 2019-07-16

Abstract

Abstract

Through pull-out tests of 12 groups bonding specimens of steel strand and UHPC,the failure mode and mechanism of the slip-breaking specimen with splitting crack in the whole process were emphatically analyzed, and then the effects of protective layer thickness and anchorage length on ultimate load were discussed, whereafter, the formula for calculating the ultimate bond strength and anchor length when the thickness of the protective layer was 2 times the diameter of the steel strand was fitted by the least squares method. The results showed that the number of cracks and crack width between steel strand and UHPC were significantly less those that between steel strand and ordinary concrete on account of steel fiber which could restrain the crack development and increase the splitting strength of UHPC specimens.The ultimate load increased when the thickness of the protective layer and the anchorage length increased. The polynomial fitting method was used to obtain the critical anchoring formula of steel strand in UHPC, and the anchorage length was recommended to be 35d.
- UHPC,
- bonding properties,
- failure mode,
- critical anchorage length

FullText(HTML)

References(14)

References

闫志刚,季文玉,安明喆.活性粉末混凝土低高度梁设计及试验研究[J].土木工程学报,2007,42(5):96-102.

安明喆,杨志慧,徐自若,等.活性粉末混凝土的力学性能[J].中国铁道科学,2010,32(1):54-58.

徐有邻,宇秉训,朱龙.钢绞线基本性能与锚固长度的试验研究[J].建筑结构,1996,25(3):34-38

,53.

邓宗才,袁常兴.高强钢筋与活性粉末混凝土黏结性能的试验研究[J].土木工程学报,2014,47(3):69-78.

方志,王常林,张洪桥,等.碳纤维钢绞线在活性粉末混凝土中锚固性能的试验研究[J].中国公路学报,2016,29(6):199-206.

HEGGER J,TUCHLINSKI D,KOMMER B. Bond Anchorage Behavior and Shear Capacity of Ultra High Performance Concrete Beams[C]//Proceedings of the International Symposium on Ultra High Performance Concrete. Germany:University of Kassel, 2004:351-360.

HEGGER J, BERTRAM G. Shear Carrying Capacity of Ultra-High Performance Concrete Beams[C]//Proceedings of International Fib Symposium. Amsterdam:2008:96.

EMERSON E, EDMUNDO D R, ROYCE W F, et al. Transfer and Development Lengths and Prestress Losses in Ultra-High-Performance Concrete Beams[J]. Journal of the Transportation Research Board,2011:76-81.

YUAN J,GRAYBEAL B. Bond of Reinforcement in Ultra-High-Performance Concrete[J].ACI Structural Journal,2015,112(6):851-860.

DANG C N, MURRAY C D, FLOYD R W, et al. A Correlation of Strand Surface Quality to Transfer Length[J]. ACI Structural Journal, 2014,111(5):1245-1252.

American Conerete Insfitute. Building Code Requirements for Structural Concrete(ACI 318-11) and Conmentary[S]. Farming Hills, MI:ACI, 2011.

American Association of State Highway and Transportation Officals. LRFD Bridge Design Specifications, Customary US Units[S]. Washington D C:AASHTO,2012.

中华人民共和国国家质量监测检验检疫总局. 活性粉末混凝土:GB/T 31387-2015[S]. 北京:中国标准出版社,2015.

李晓芬,刘立新.预应力钢绞线拔出锚固受力性能试验研究[J].工业建筑,2015,45(5):65-69.

Relative Articles

Supplements(0)

Cited By

Proportional views