原文传递
Experimental Study on Flexural Performance of HSS-UHPC Composite Beams with Perfobond Strip Connectors
| 题名： | Experimental Study on Flexural Performance of HSS-UHPC Composite Beams with Perfobond Strip Connectors |
| 正文语种： | eng |
| 作者： | He, Shaohua;Li, Quanfeng;Yang, Gang;Zhou, Xuan;Mosallam, Ayman S. |
| 作者单位： | Guangdong Univ Technol Sch Civil & Transportat Engn Guangzhou 510006 Guangdong Peoples R China;Guangdong Univ Technol Sch Civil & Transportat Engn Guangzhou 510006 Guangdong Peoples R China;Guangdong Univ Technol Sch Civil & Transportat Engn Guangzhou 510006 Guangdong Peoples R China;Hunan Prov Commun Planning Survey & Design Inst C Dept Bridge Engn Moon Isl St Changsha 410082 Hunan Peoples R China;Univ Calif Irvine Dept Civil & Environm Engn Irvine CA 92697 USA |
| 关键词： | Composite beams;High-strength steel (HSS);Ultrahigh performance concrete (UHPC);Perfobond strip connectors (PBL);Flexural resistance |
| 摘要： | In order to explore the flexural performance of high-strength steel (HSS)/ultrahigh performance concrete (UHPC) composite beams, a total of six HSS-UHPC composite beams with varying levels of interfacial shear connectivity, arrangements of perfobond strip connectors (PBL), and variable thicknesses of concrete decks were fabricated and tested. The failure mode, flexural stiffness, load-deflection curve, strain history, and interfacial slippages obtained from the composite beams are presented and discussed. Experimental results indicated that despite the lightweight feature of such a hybrid system, the HSS-UHPC composite beams exhibited high flexural stiffness and favorable ductility. As the level of shear connectivity decreases, the bending resistance of HSS-UHPC composite beams decreases, while the beams' ductility exhibits slight enhancement. The PBL arrangement has crucial effects on the behavior of HSS-UHPC composite beams, and the beams' ductility was improved by approximately 48.9% by alternating uniformly distributed PBLs to a nonuniform distribution pattern. Experimental results also highlighted the influence of the UHPC deck thickness on the flexural performance of the composite beams. As compared to an 80.0 mm-thick UHPC deck, the 100.0 mm-thick UHPC deck witnessed increases in bending stiffness, yield moment, and ultimate resistance of the composite beam by 19.8%, 22.8%, and 14.6%, respectively. Comparisons between the results obtained from the tests and analytical procedures for predicting HSS-UHPC composite beams resistances were performed to assess the feasibility of existing design approaches. Results of the study confirmed that equations recommended by GB 50017-2017 have favorable accuracy in calculating the bending resistance of HSS-UHPC composite beams with uniformly distributed PBLs, while for HSS-UHPC composite beams with nonuniformly distributed PBLs, both the AASHTO LRFD and Ban et al. equations are recommended. |
| 出版年： | 2022 |
| 期刊名称： | Journal of structural engineering |
| 卷： | 148 |
| 期： | 6 |
| 页码： | 04022064.1-04022064.13 |
相关文献
- Numerical Investigation of High-Strength Steel and Ultrahigh-Performance Concrete for Ductile Rectangular Hollow Columns
- Experimental Investigation on Flexural Behavior of U-Shaped Steel–Concrete Composite Beams with Bolt Connections under a Negative Bending Moment
- Predicting Flexural Capacity of Ultrahigh-Performance Concrete Beams: Machine Learning-Based Approach
- Cyclic Behavior of Perfobond-Shear Connectors Subjected to Fully Reversed Cyclic Loading
- Numerical and digital image correlation study of the flexural behavior of prestressed ultra-high-performance concrete beams made from locally available materials
- Numerical modeling of inverted-U-shaped connectors to enhance the performance of composite beams
检索历史
应用推荐
