超高性能混凝土（UHPC）薄层加固普通混凝土（NC）桥面板抗弯性能试验研究

张文龙; 张书峰; 王蕾; 黄军兴; 柯裕桢; 姜海波

doi:10.3724/j.gyjzG25052103

超高性能混凝土（UHPC）薄层加固普通混凝土（NC）桥面板抗弯性能试验研究

doi: 10.3724/j.gyjzG25052103

1. 广州市交通设计研究院有限公司, 广州 511400;
2. 广东工业大学土木与交通工程学院, 广州 510006

基金项目:

国家自然科学基金项目（51778150）。

详细信息

作者简介:
张文龙，高级工程师，主要从事桥梁维修加固相关研究，185462082@qq.com。

通讯作者:
姜海波，教授，hbjiang@gdut.edu.cn。

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- 文章访问数: 23
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出版历程
- 收稿日期: 2025-05-21
- 网络出版日期: 2026-11-07

The Experimental Investigation on Flexural Behavior of NC Slabs Strengthened by UHPC Overlays

1. Guangzhou Communication Design Institute Co., Ltd., Guangzhou 511400, China;
2. School of Civil and Transportation Engineering, Guangdong University of Technology, Guangzhou 510006, China

摘要

摘要: 为深入研究超高性能混凝土（UHPC）薄层加固普通混凝土（NC）桥面板抗弯性能，设计制作了6块UHPC薄层加固NC桥面板和1块未加固NC桥面板，并开展四点反弯试验。主要试验参数为UHPC薄层中的钢纤维掺量、UHPC薄层是否配筋和NC-UHPC界面处理方式。试验结果表明：UHPC薄层可以大幅度提高加固板的开裂荷载和0.2 mm裂宽特征荷载；UHPC薄层中的配置钢筋可以有效提高加固板的抗弯承载力，而UHPC薄层中钢纤维含量和UHPC-NC界面处理方式对抗弯承载力影响不显著；UHPC薄层中，钢纤维和配置钢筋可以有效抑制裂缝宽度的发展；采用有限元软件构建的UHPC薄层加固NC桥面板的数值模型，分析结果与试验结果非常吻合。
- UHPC /
- 四点纯弯加载 /
- 加固 /
- 植筋连接 /
- 桥面板
Abstract: To deeply study the experimental investigation on flexural behavior of NC slabs strengthened by UHPC overlays， the four-point hogging flexural tests on six NC slabs strengthened by UHPC overlays and one unstrengthened NC slab were performed. The parameters adopted in the experiment included the steel fiber content in the UHPC layer， the presence or absence of rebar in the UHPC layer， and the connection between UHPC and NC. According to the test results， the cracking loads of the composite slabs and the characteristic loads of 0.2 mm crack width can be significantly enhanced by the additional UHPC overlays. The flexural capacities of those slabs can be effectively improved by the presence of rebar in UHPC overlays. The steel fiber content in the UHPC layer and disposition of UHPC-NC interfaces had slightly effects on the cracking resistances and ultimate flexural capacities. Steel fibers and steel rebars in UHPC thin layers can effectively inhibit crack width development. The numerical model of the UHPC thin-layer strengthened NC plate was established using finite element software， and the numerical analysis results were in good agreement with the test results.
- UHPC /
- four-point pure bending loading /
- reinforcement /
- mechanical connection /
- bridge deck

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参考文献(21)

[1]	JUNG M,LEE Y S,HONG S G,et al. Carbon nanotubes（CNTs）in ultra-high performance concrete（UHPC）:dispersion,mechanical properties,and electromagnetic interference（EMI）shielding effectiveness（SE）[J]. Cement and Concrete Research,2020,131:106017.
[2]	ZHANG Y,ZHU Y P,QU S Q,et al. Improvement of flexural and tensile strength of layered-casting UHPC with aligned steel fibers[J]. Construction and Building Materials,2020,251:118893.
[3]	YANG R,YU R,SHUI Z H,et al. Feasibility analysis of treating recycled rock dust as an environmentally friendly alternative material in Ultra-High Performance Concrete（UHPC）[J]. Journal of Cleaner Production,2020,258:120673.
[4]	ZHANG S F,CAO Z P,ZHANG L F,et al. Design and construction of a novel steel-UHPC truss pedestrian bridge in Guangdong Province,People’s Republic of China[J]. Structural Engineering International,2026,36（1）:67-75.
[5]	TU W J,CHENG Q,ZHANG L F,et al. Shear performance of 25 m full-scale prestressed UHPC-NC composite I-beam without stirrups[J]. Case Studies in Construction Materials,2024,21:e03942.
[6]	JIANG H B,ZHANG L F,DENG B W,et al. The direct shear behavior of the ultra-high performance concrete-filled socket connections between the bridge piers and footings[J]. Structures,2024,66:106888.
[7]	ZHANG L F,DENG B W,HE B N,et al. Experimental investigation on shear behavior of non-stirrup UHPC beams under larger shear span-depth ratios[J]. Buildings,2024,14（5）:1374.
[8]	JIANG H B,TU W J,LI M Y,et al. Flexural performance of UHPC-filled narrow joints between precast concrete bridge slabs[J]. Case Studies in Construction Materials,2024,20:e03108.
[9]	CHEN M Z,DE CORTE W,JIANG H B,et al. Experimental study on direct-shear behaviour of narrow joints in socket connections for precast pier-to-pile footing systems[J]. Structures,2024,61:106006.
[10]	LI P J,CHENG Q,CHEN N X,et al. Experimental study on shear behavior of non-stirrup ultra-high performance concrete beams[J]. Materials,2023,16（11）:4177.
[11]	FENG J H,LI P S,WU J P,et al. Shear behavior of externally prestressed UHPC beams without stirrups[J]. Case Studies in Construction Materials,2023,18:e01766.
[12]	JIANG H B,HU Z B,CAO Z P,et al. Experimental and numerical study on shear performance of externally prestressed precast UHPC segmental beams without stirrups[J]. Structures,2022,46:1134-1153.
[13]	FANG H Z,GU M G,ZHANG S F,et al. Effects of steel fiber and specimen geometric dimensions on the mechanical properties of ultra-high-performance concrete[J]. Materials,2022,15（9）:15093027.
[14]	YIN H,SHIRAI K,TEO W. Numerical model for predicting the structural response of composite UHPC-concrete members considering the bond strength at the interface[J]. Composite Structures,2019,215:185-197.
[15]	党祺. UHPC加固损伤板受弯性能的研究[D]. 长沙:湖南大学,2016.
[16]	刘超,马汝杰,王俊颜,等. 超高性能混凝土薄层加固法在槽形梁桥中的应用[J]. 桥梁建设,2017,47（5）:112-116.
[17]	WANG Z S,LI L X,ZHOU J T,et al. Experimental investigation and calculation method of the interfacial bonding performance of stone masonry reinforced with UHPC[J]. Journal of Building Engineering,2024,85:108435.
[18]	YANG J,CHEN R,ZHANG Z Y,et al. Experimental study on the ultimate bearing capacity of damaged RC arches strengthened with ultra-high performance concrete[J]. Engineering Structures,2023,279:115611.
[19]	GUO Y Q,WANG J Y. Flexural behavior of high-strength steel bar reinforced UHPC beams with considering restrained shrinkage[J]. Construction and Building Materials,2023,409:133802.
[20]	TU L,ZHAO H,QIAO D Q,et al. Concept and flexural performance of non-prestressed steel plate-UHPC-NC composite girder bridge[J]. Engineering Structures,2024,315:118417.
[21]	黄军兴. 旧混凝土桥面加铺UHPC薄层力学性能研究[D]. 广州:广东工业大学,2023.