Please wait a minute...
购物车 申请加入邮件组 English
高级检索 图表检索
Frontiers of Structural and Civil Engineering

ISSN 2095-2430

ISSN 2095-2449(Online)

CN 10-1023/X

邮发代号 80-968

2019 Impact Factor: 1.68

热点文章  |  下载排行  |  浏览排行
在线投稿 免费RSS订阅
Frontiers of Structural and Civil Engineering  2021, Vol. 15 Issue (6): 1426-1440   https://doi.org/10.1007/s11709-021-0783-z
  本期目录
Shear behavior of ultra-high-performance concrete beams prestressed with external carbon fiber-reinforced polymer tendons
Li JIA1, Zhi FANG1,2(), Maurizio GUADAGNINI3, Kypros PILAKOUTAS3, Zhengmeng HUANG4
1. College of Civil Engineering, Hunan University, Changsha 410082, China
2. Key Laboratory for Wind and Bridge Engineering of Hunan Province, Changsha 410082, China
3. Department of Civil and Structural Engineering, The University of Sheffield, Sheffield S1 3JD, UK
4. Guizhou Transportation Planning Survey and Design Academe Co. Ltd., Guiyang 550003, China
 全文: PDF(17771 KB)   HTML
Abstract：

The ultra-high-performance concrete (UHPC) and fiber-reinforced polymer (FRP) are well-accepted high-performance materials in the field of civil engineering. The combination of these advanced materials could contribute to improvement of structural performance and corrosion resistance. Unfortunately, only limited studies are available for shear behavior of UHPC beams reinforced with FRP bars, and few suggestions exist for prediction methods for shear capacity. This paper presents an experimental investigation on the shear behavior of UHPC beams reinforced with glass FRP (GFRP) and prestressed with external carbon FRP (CFRP) tendons. The failure mode of all specimens with various shear span to depth ratios from 1.7 to 4.5 was diagonal tension failure. The shear span to depth ratio had a significant influence on the shear capacity, and the effective prestressing stress affected the crack propagation. The experimental results were then applied to evaluate the equations given in different codes/recommendations for FRP-reinforced concrete structures or UHPC structures. The comparison results indicate that NF P 18-710 and JSCE CES82 could appropriately estimate shear capacity of the slender specimens with a shear span to depth ratio of 4.5. Further, a new shear design equation was proposed to take into account the effect of the shear span to depth ratio and the steel fiber content on shear capacity.
Key words： beam    external prestressing    ultra-high-performance concrete    fiber-reinforced polymers    shear behavior    design equation
收稿日期: 2021-07-08      出版日期: 2022-01-21
Corresponding Author(s): Zhi FANG   
 引用本文:   
. [J]. Frontiers of Structural and Civil Engineering, 2021, 15(6): 1426-1440.
Li JIA, Zhi FANG, Maurizio GUADAGNINI, Kypros PILAKOUTAS, Zhengmeng HUANG. Shear behavior of ultra-high-performance concrete beams prestressed with external carbon fiber-reinforced polymer tendons. Front. Struct. Civ. Eng., 2021, 15(6): 1426-1440.
 链接本文:  
https://academic.hep.com.cn/fsce/CN/10.1007/s11709-021-0783-z
https://academic.hep.com.cn/fsce/CN/Y2021/V15/I6/1426
Fig.1  
specimen code tensile GFRP bar (mm) GFRP stirrup (mm) a (mm) a/d fpe (MPa) fpe/ffp (%)
B-1.7-30 3 ?12 ?6@100 310 1.7 762 30
B-2.8-30 510 2.8 762 30
B-4.5-5 810 4.5 127 5
B-4.5-15 810 4.5 381 15
B-4.5-30 810 4.5 762 30
B-4.5-45 810 4.5 1143 45
Tab.1  
Fig.2  
material type nominal diameter (mm) modulus of elasticity (GPa) tensile strength (MPa)
GFRP bar 12 44.3 715
GFRP stirrup 6 42.6 833
CFRP tendon 12.54 157.0 2539
Tab.2  
Fig.3  
Fig.4  
specimen code fcu (MPa) fc (MPa) fr0 (MPa) fru (MPa) Ec (GPa)
B-1.7-30 150.4 128.7 11.4 24.5 45.1
B-2.8-30
B-4.5-5 160.9 135.5 12.6 25.9 46.1
B-4.5-15
B-4.5-30 151.8 129.5 11.2 23.6 45.4
B-4.5-45
Tab.3  
Fig.5  
Fig.6  
specimen code flexural cracking shear cracking ultimate state Pu/Pcri Δu/Δcri
Pcr (kN) Δcr (mm) Pcri (kN) Δcri (mm) Pu (kN) Δu (mm)
B-1.7-30 148.0 4.95 239.8 16.33 329.2 30.80 1.37 1.89
B-2.8-30 69.2 4.51 88.6 6.86 201.5 38.60 2.27 5.63
B-4.5-5 15.6 1.46 45.4 11.68 120.4 48.99 2.65 4.19
B-4.5-15 31.3 3.60 55.5 12.32 124.4 44.81 2.24 3.64
B-4.5-30 44.4 5.06 69.6 13.61 129.6 39.92 1.86 2.93
B-4.5-45 55.7 5.83 100.5 18.58 131.1 32.17 1.30 1.73
Tab.4  
Fig.7  
Fig.8  
Fig.9  
Fig.10  
Fig.11  
Fig.12  
Fig.13  
specimen code GB 50608-2020
Vu,GB (kN) Vc (kN) Vs (kN) Vp (kN) Vu,GB/Vu
B-1.7-30 29.2 12.5 9.3 7.4 0.18
B-2.8-30 27.5 12.5 9.3 5.8 0.27
B-4.5-5 22.9 12.3 9.3 1.4 0.38
B-4.5-15 24.5 12.3 9.3 3.0 0.39
B-4.5-30 29.0 13.8 9.3 5.9 0.45
B-4.5-45 31.0 13.8 9.3 7.9 0.47
Tab.5  
specimen code ACI 440.1R-15
Vu,ACI (kN) Vc (kN) Vs (kN) Vp (kN) Vu,ACI/Vu
B-1.7-30 18.4 9.1 9.3 0 0.11
B-2.8-30 18.4 9.1 9.3 0 0.18
B-4.5-5 18.7 9.4 9.3 0 0.31
B-4.5-15 18.7 9.4 9.3 0 0.30
B-4.5-30 18.4 9.1 9.3 0 0.28
B-4.5-45 18.4 9.1 9.3 0 0.28
Tab.6  
specimen code CAN/CSA S806-12
Vu,CSA (kN) Vc (kN) Vs (kN) Vp (kN) Vu,CSA/Vu
B-1.7-30 33.2 17.6 15.6 0 0.20
B-2.8-30 29.3 13.7 15.6 0 0.29
B-4.5-5 26.5 10.9 15.6 0 0.44
B-4.5-15 26.5 10.9 15.6 0 0.43
B-4.5-30 26.7 11.1 15.6 0 0.41
B-4.5-45 26.7 11.1 15.6 0 0.41
Tab.7  
specimen code NF P 18-710
Vu,NF P (kN) Vc′ (kN) Vf (kN) Vs (kN) Vu,NF P/Vu
B-1.7-30 60.8 14.3 38.4 8.1 0.37
B-2.8-30 61.0 14.5 38.4 8.1 0.61
B-4.5-5 59.6 13.1 38.4 8.1 0.99
B-4.5-15 60.2 13.7 38.4 8.1 0.97
B-4.5-30 60.9 14.4 38.4 8.1 0.94
B-4.5-45 61.6 15.1 38.4 8.1 0.94
Tab.8  
specimen code JSCE CES82
Vu,JSCE (kN) Vc′ (kN) Vf (kN) Vs (kN) Vp (kN) Vu,JSCE/Vu
B-1.7-30 65.7 4.9 54.2 6.6 0 0.40
B-2.8-30 62.9 2.1 54.2 6.6 0 0.62
B-4.5-5 62.7 1.9 54.2 6.6 0 1.04
B-4.5-15 62.8 2.0 54.2 6.6 0 1.01
B-4.5-30 62.9 2.1 54.2 6.6 0 0.97
B-4.5-45 63.0 2.2 54.2 6.6 0 0.96
Tab.9  
specimen code MCS-EPFL
Vu,MCS (kN) Vc (kN) Vs (kN) Vu,MCS/Vu
B-1.7-30 85.7 78.2 7.5 0.52
B-2.8-30 85.7 78.2 7.5 0.85
B-4.5-5 85.7 78.2 7.5 1.42
B-4.5-15 85.7 78.2 7.5 1.38
B-4.5-30 85.7 78.2 7.5 1.32
B-4.5-45 85.7 78.2 7.5 1.31
Tab.10  
specimen code proposed equation
Vu,cal (kN) Vc (kN) Vs (kN) Vp (kN) Vu,cal/Vu Vu,cal (kN)
B-1.7-30 163.8 147.1 9.3 7.4 1.00 163.8
B-2.8-30 98.5 83.4 9.3 5.8 0.98 98.5
B-4.5-5 61.3 50.7 9.3 1.3 1.02 61.3
B-4.5-15 63.0 50.7 9.3 3.0 1.01 63.0
B-4.5-30 67.1 51.9 9.3 5.9 1.04 67.1
B-4.5-45 69.1 51.9 9.3 7.9 1.05 69.1
Tab.11  
specimen code a/d ρf (%) ρsv (%) Pu (kN) Pu,cal (kN) Pu,cal/Pu
B1 2.0 2.10 0.40 920 1050 1.14
B2 2.5 2.10 0.40 870 859 0.98
B3 3.0 2.10 0.40 817 738 0.92
B4 3.0 2.10 0.27 770 673 0.87
B5 3.0 2.10 0.20 721 641 0.88
Tab.12  
1 H Zhu, S Cheng, D Gao, S M Neaz, C Li. Flexural behaviour of partially fiber-reinforced high-strength concrete beams reinforced with FRP bars. Construction & Building Materials, 2018, 161 : 587– 597
https://doi.org/10.1016/j.conbuildmat.2017.12.003
2 F Au, J S Du. Deformability of concrete beams with unbonded FRP tendons. Engineering Structures, 2008, 30( 12): 3764– 3770
https://doi.org/10.1016/j.engstruct.2008.07.003
3 J Xue, B Briseghella, F Huang, C Nuti, H Tabatabai, B Chen. Review of ultra-high performance concrete and its application in bridge engineering. Construction & Building Materials, 2020, 260 : 119844–
https://doi.org/10.1016/j.conbuildmat.2020.119844
4 J Li, Z Wu, C Shi, Q Yuan, Z Zhang. Durability of ultra-high performance concrete—A review. Construction & Building Materials, 2020, 255 : 119296–
https://doi.org/10.1016/j.conbuildmat.2020.119296
5 A Shishegaran, M R Ghasemi, H Varaee. Performance of a novel bent-up bars system not interacting with concrete. Frontiers of Structural and Civil Engineering, 2019, 13( 6): 1301– 1315
https://doi.org/10.1007/s11709-019-0552-4
6 A Shishegaran, B Karami, T Rabczuk, A Shishegaran, M A Naghsh, M Mohammad Khani. Performance of fixed beam without interacting bars. Frontiers of Structural and Civil Engineering, 2020, 14( 5): 1180– 1195
https://doi.org/10.1007/s11709-020-0661-0
7 H Zheng, Z Fang, B Chen. Experimental study on shear behavior of prestressed reactive powder concrete I-girders. Frontiers of Structural and Civil Engineering, 2019, 13( 3): 618– 627
https://doi.org/10.1007/s11709-018-0500-8
8 X Wang, J Z Shi, G Wu, L Yang, Z S Wu. Effectiveness of basalt FRP tendons for strengthening of RC beams through the external prestressing technique. Engineering Structures, 2015, 101 : 34– 44
9 A Elrefai, J West, K Soudki. Fatigue of reinforced concrete beams strengthened with externally post-tensioned CFRP tendons. Construction and Building Materials, 2012, 29 : 246– 256
10 A K El-Sayed, E F El-Salakawy, B Benmokrane. Shear capacity of high-strength concrete beams reinforced with FRP bars. ACI Structural Journal, 2006, 103( 3): 383– 389
11 E A Ahmed, E F El-Salakawy, B Benmokrane. Performance evaluation of glass fiber-reinforced polymer shear reinforcement for concrete beams. ACI Structural Journal, 2010, 107( 1): 53– 62
12 G B Jumaa, A R Yousif. Size effect on the shear failure of high-strength concrete beams reinforced with basalt FRP bars and stirrups. Construction & Building Materials, 2019, 209 : 77– 94
https://doi.org/10.1016/j.conbuildmat.2019.03.076
13 Z Fang, R Hu, R N Jiang, Y Xiang, C Liu. Fatigue behavior of stirrup free reactive powder concrete beams prestressed with CFRP tendons. Journal of Composites for Construction, 2020, 24( 4): 04020018–
https://doi.org/10.1061/(ASCE)CC.1943-5614.0001027
14 E Ferrier, A Confrere, L Michel, G Chanvillard, S Bernardi. Shear behaviour of new beams made of UHPC concrete and FRP rebar. Composites. Part B, Engineering, 2016, 90 : 1– 13
https://doi.org/10.1016/j.compositesb.2015.11.022
15 J Qi, J Wang, Z Ma, T Tong. Shear behaviour of externally prestressed concrete beams with draped tendons. ACI Structural Journal, 2016, 113( 4): 677– 688
https://doi.org/10.14359/51688746
16 J Wang, J Qi, J Zhang. Optimization method and experimental study on the shear strength of externally prestressed concrete beams. Advances in Structural Engineering, 2014, 17( 4): 607– 615
https://doi.org/10.1260/1369-4332.17.4.607
17 K H Tan, C K Ng. Effect of shear in externally prestressed beams. ACI Structural Journal, 1998, 95( 2): 116– 128
18 A H Ghallab, M A Khafaga, M F Farouk, A Essawy. Shear behavior of concrete beams externally prestressed with Parafil ropes. Ain Shams Engineering Journal, 2013, 4( 1): 1– 16
https://doi.org/10.1016/j.asej.2012.05.003
19 S Ng, K Soudki. Shear behavior of externally prestressed beams with carbon fiber-reinforced polymer tendons. ACI Structural Journal, 2010, 107( 4): 443– 450
20 T Mészöly, N Randl. Shear behaviour of fiber-reinforced ultra-high performance concrete beams. Engineering Structures, 2018, 168 : 119– 127
https://doi.org/10.1016/j.engstruct.2018.04.075
21 M Pourbaba, A Joghataie, A Mirmiran. Shear behaviour of ultra-high performance concrete. Construction & Building Materials, 2018, 183 : 554– 564
https://doi.org/10.1016/j.conbuildmat.2018.06.117
22 D Y Yoo, N Banthia, Y S Yoon. Predicting service deflection of ultra-high-performance fiber-reinforced concrete beams reinforced with GFRP bars. Composites. Part B, Engineering, 2016, 99 : 381– 397
https://doi.org/10.1016/j.compositesb.2016.06.013
23 M Alkaysi, S El-Tawil. Factors affecting bond development between ultra high performance concrete (UHPC) and steel bar reinforcement. Construction & Building Materials, 2017, 144 : 412– 422
https://doi.org/10.1016/j.conbuildmat.2017.03.091
24 440.4R-04 ACI. Prestressing Concrete Structures with FRP Tendons. Farmington Hills: American Concrete Institute (ACI), 2004
25 440.1R-15 ACI. Guide for the Design and Construction of Structural Concrete Reinforced with Fiber-reinforced Polymer (FRP) Bars. Farmington Hills: American Concrete Institute (ACI), 2015
26 P 18–710 NF. National Addition to Eurocode 2—Design of Concrete Structures: Specific Rules for Ultra-High Performance Fibre-Reinforced Concrete. Saint-Denis Cedex: Association Française de Normalisation (AFNOR), 2016
27 Y W Fang, Z Fang, R N Jiang, Y Xiang, D Huang. Transverse static and low-velocity impact behavior of CFRP wires under pretension. Journal of Composites for Construction, 2019, 23( 5): 04019041–
https://doi.org/10.1061/(ASCE)CC.1943-5614.0000970
28 31387-2015 GB/T. Reactive Powder Concrete. Beijing: Ministry of Housing and Urban-rural Development of the People’s Republic of China, 2015
29 Y Yuan, Z Y Wang. Shear behaviour of large-scale concrete beams reinforced with CFRP bars and handmade strip stirrups. Composite Structures, 2019, 227 : 111253–
https://doi.org/10.1016/j.compstruct.2019.111253
30 J Qi, Z J Ma, J Wang, Y Bao. Post-cracking shear behaviour of concrete beams strengthened with externally prestresssed tendons. Structures, 2020, 23 : 214– 224
https://doi.org/10.1016/j.istruc.2019.09.009
31 Y L Voo, W K Poon, S J Foster. Shear strength of steel fiber-reinforced ultrahigh-performance concrete beams without stirrups. Journal of Structural Engineering, 2010, 136( 11): 1393– 1400
https://doi.org/10.1061/(ASCE)ST.1943-541X.0000234
32 Q Wang, H L Song, C L Lu, L Z Jin. Shear performance of reinforced ultra-high performance concrete rectangular section beams. Structures, 2020, 27( 8): 1184– 1194
https://doi.org/10.1016/j.istruc.2020.07.036
33 J Yang, Z Fang, G L Dai. Flexural behaviour of prestressed UHPC beams. Advanced Materials Research, 2011, 243– 249: 2011-1155
34 M Herbrand, M Classen. Shear tests on continuous prestressed concrete beams with external prestressing. Structural Concrete, 2015, 16( 3): 428– 437
https://doi.org/10.1002/suco.201400082
35 Engineering Series No. 82 Concrete. Recommendations for Design and Construction of High Performance Fiber Reinforced Cement Composites with Multiple Fine Cracks. Tokyo: Japan Society of Civil Engineers (JSCE), 2008
36 GB50608-2020. Technical Standard for Fiber Reinforced Polymer (FRP) in Construction. Beijing: Ministry of Housing and Urban-rural Development of the People’s Republic of China, 2020
37 318M-08 ACI. Building Code Requirements for Structural Concrete ACI 318M–08 and Commentary. Farmington Hills: American Concrete Institute (ACI), 2008
38 S806-12 CAN/CSA. Design and Construction of Building Structures with Fibre-reinforced Polymers. Rexdale: Canadian Standards Association (CSA), 2012
39 CECS38-2004. Technical Specification for Fiber Reinforced Concrete Structures. Beijing: China Association for Engineering Construction Standardization (CECS), 2004
40 UHPFRC MCS-EPFL Recommendation. Ultra-high performance fibre reinforced cement-based composites (UHPFRC) construction material, dimensioning and application. Lausanne: Swiss Federal Institute of Technology (MCS-EPFL), 2016
41 H Zheng. Experimental study on shear behaviour of concrete box beams. Dissertation for the Doctoral Degree. Changsha: Hunan University, 2015 (in Chinese)
42 T Cao. Experimental study on shear behaviours of CFRP tendons reinforced FRCC flexural components. Thesis for the Master’s Degree. Nanjing: Southeast University, 2016 (in Chinese)
Viewed
Full text


Abstract

Cited
  Shared   
  Discussed