Journal of Hebei University of Water Resources and Electric Engineering

Journal of Hebei University of Water Resources and Electric Engineering ›› 2020, Vol. 30 ›› Issue (3): 22-27.DOI: 10.16046/j.cnki.issn2096-5680.2020.03.004

• Technology Theory and Application • Previous Articles     Next Articles

Experimental Study on Reinforcement Effect of Concrete Prestressed Hollow Slab with Steel Plate and Carbon Fiber

FU Zhi-qiang1，LIU Guo-hui 1，XIAO Cheng-zhi 2   

  1. 1.Tianjin Highway Engineering Design and Research Institute，300170，Tianjin，China;
    2.School of Civil and Transportation Engineering，Hebei University of Technology，300401，Tianjin，China

  • Received:2019-11-12 Revised:2019-12-17 Online:2020-09-30 Published:2020-10-30

预应力混凝土空心板梁粘贴钢板与碳纤维板加固效果试验研究

付治强1，刘国慧1，肖成志2   

  1. 1.天津市公路工程设计研究院，天津市东兴路218号 300170;
    2.河北工业大学土木与交通学院，天津市北辰区西平道5340号 300401

  • 通讯作者: 肖成志(1976-)，男，教授，主要从事道路工程方面的研究工作｡E-mail:chengzhixiao@hotmail.com
  • 作者简介:付治强(1982-)，男，硕士，高级工程师，主要从事道路与桥梁工程方面的设计与研究工作｡E-mail:fuzhiqiang82@sohu.com
  • 基金资助:
    天津市交通运输科技发展计划项目(2015-09);; 河北省自然科学基金项目(E2018202108)

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Abstract: In order to analyze the reinforced effect of prestressed hollow slab，comparative analysis for reinforcement effect of common highway concrete prestressed hollow slab with steel plate or carbon fiber were conducted by laboratory loading test.Herein the deflection，strain of steel and cracks have been used to evaluate the reinforcement effect.The test results show that compared with unreinforced prestressed hollow slab，steel plate and carbon fiber reinforced prestressed hollow slab can effectively reduce the deflection and cracks of hollow slab and strain of steel.The change proportion of the deflection and cracks of reinforced hollow slab and strain of steel increases with the load increase.Under the same load，steel plate reinforced prestressed hollow slab can more effectively reduce the deflection and cracks of hollow slab and strain of steel than carbon fiber reinforced prestressed hollow slab，indicating that the reinforcement effect of steel plate is better than carbon fiber.

Key words: load test, prestressed hollow slab, steel plate, carbon fiber, reinforcement effect

摘要： 为研究预应力混凝土板梁加固效果,通过室内静力载荷试验对粘贴钢板和碳纤维板加固的预应力空心板梁承载特性进行了分析,综合分析了预应力空心板梁跨中挠度、受拉区钢筋应变和梁腹部裂缝变化,以此评价粘贴钢板与碳纤维板的加固效果。结果表明:与未加固的预应力空心板梁相比,粘贴钢板和碳纤维板加固的板梁可有效减小梁体跨中挠度和受拉区钢筋应变,并有效抑制梁腹部裂缝扩展;加固预应力空心板梁的跨中挠度、受拉区钢筋应变和腹部裂缝减小幅度随荷载增大而逐渐增大,相同荷载下粘贴钢板比粘贴碳纤维板加固预应力空心板梁能更有效减小梁体跨中挠度、受拉区钢筋应变和抑制梁腹部裂缝开展,表明粘贴钢板加固预应力空心板梁的加固效果优于粘贴碳纤维板加固。

关键词: 荷载试验, 预应力空心板梁, 钢板, 碳纤维板, 加固效果

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