Flexural performance of prefabricated U‑shaped UHPC permanent formwork-concrete composite beams reinforced with FRP bars

• Autorzy: Ge Wenjie , Zhang Zhiwen , Ashour Ashraf , Guan Zhongwei , Jiang Hongbo , Sun Chuanzhi , Qiu Linfeng , Yao Shan , Cao Dafu

Identyfikatory

DOI

10.1007/s43452-023-00644-4

• Języki publikacji: EN

Abstrakty

EN

Finite-element (FE) analysis of fiber-reinforced polymer (FRP)-reinforced concrete beams cast in U-shaped ultra-high-performance concrete (UHPC) permanent formworks is presented in this paper. Concrete damage plasticity (CDP) and FRP brittle damage models were used to simulate the damage behavior of concrete and FRP bars. The results of FE simulation are in good agreement with the experimental results. Furthermore, parametric studies were conducted to investigate the effect of concrete and UHPC strengths, yield strength of steel bars, elastic modulus of FRP bars, ultimate tensile strength of FRP bars, types of UHPC-normal strength concrete (NSC) interface and thickness of UHPC under different reinforcement conditions. Flexural performances, in terms of cracking, yield, ultimate loads and corresponding deflections, failure mode, energy dissipation and ductility, were investigated. Traction-separation model was used to describe the bonding degradation and the maximum slip of two types of bonding interfaces (smooth surface and medium-rough surface). Both flexural capacity and resistance to deformation of composite beams are significantly improved by the utilization of hybrid FRP/steel reinforcement. The UHPC formwork can also delay the occurrence and development of cracks. By appropriately increasing the strength of UHPC or elastic modulus of FRP bar, the flexural capacity of composite beams is effectively improved. It is expected that the results presented in this paper can guide the design and construction of U-shaped UHPC permanent formwork-concrete composite beams reinforced with FRP bars.

Słowa kluczowe

EN

prefabricated UHPC formwork; composite beam; FRP bar; brittle damage model; flexural performance

PL

beton ultrawysokowartościowy; belka zespolona; pręt FRP

• Wydawca: Springer ; Wrocław University of Science and Technology
• Czasopismo: Archives of Civil and Mechanical Engineering
• Rocznik: 2023
• Tom: Vol. 23, no. 2
• Strony: art. no. e108, 2023
• Opis fizyczny: Bibliogr. 47 poz., rys., tab., wykr.

Twórcy

autor

Ge Wenjie

• College of Civil Science and Engineering, YangZhou University, HuaYang XiLu 198, YangZhou 225127, JiangSu, China
• Jiangsu Province Engineering Research Center of Prefabricated Building and Intelligent Construction, Suqian 223800, China

autor

Zhang Zhiwen

• College of Civil Science and Engineering, YangZhou University, HuaYang XiLu 198, YangZhou 225127, JiangSu, China

• https://orcid.org/0000-0002-2525-6139

autor

Ashour Ashraf

• Faculty of Engineering and Informatics, University of Bradford, Bradford BD7 1DP, UK

autor

Guan Zhongwei

• School of Engineering, University of Liverpool, Liverpool L693GQ, UK

autor

Jiang Hongbo

• College of Civil Science and Engineering, YangZhou University, HuaYang XiLu 198, YangZhou 225127, JiangSu, China

autor

Sun Chuanzhi

• Jiangsu Province Engineering Research Center of Prefabricated Building and Intelligent Construction, Suqian 223800, China

autor

Qiu Linfeng

• Nantong Construction Quality and Supervision Station, Nantong 226000, China

autor

Yao Shan

• Gansu Engineering Design Research Institute Co., LTD., Lanzhou 730030, China

autor

Cao Dafu

• College of Civil Science and Engineering, YangZhou University, HuaYang XiLu 198, YangZhou 225127, JiangSu, China

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Uwagi

PL

Opracowanie rekordu ze środków MNiSW, umowa nr SONP/SP/546092/2022 w ramach programu "Społeczna odpowiedzialność nauki" - moduł: Popularyzacja nauki i promocja sportu (2024).