采用玻璃纤维复合筋(GFRP Bar)材代替钢筋能够有效解决传统钢筋混凝土桥面结构由于钢筋锈蚀所引起的结构功能退化问题.过去试验研究表明在FRP筋混凝土桥面承受集中荷载作用下,冲切破坏模式是一种常见的破坏模式.本次研究采用现有规范及已经发表抗冲切承载力计算模型对多组混凝土桥面板试验结果进行冲切承载力预测.通过与试验结果对比发现,由于大多数理论模型是基于简支构件试验结果建立的经验公式,其无法准确计算FRP筋混凝土桥面结构的冲切承载力.笔者前期建立的GFRP筋混凝土桥面板承载力理论方法考虑了拱效应的作用,计算结果与试验结果有较好的吻合.理论分析中发现,由于较高配筋率和较小跨高比,大部分GFRP筋混凝土桥面板发生剪切破坏而非弯切破坏.因此本文建立了简化的GFRP筋混凝土板剪切承载力计算方法,该模型计算结果与多个试验结果吻合良好.
参考文献
| [1] | Benmokrane B;Chaallal O;Masmoudi R .Flexural Response of Concrete Beams Reinforced with FRP Reinforcing Bars[J].ACI STRUCTURAL JOURNAL,1996,93(01):46-55. |
| [2] | 叶列平,冯鹏.FRP在工程结构中的应用与发展[J].土木工程学报,2006(03):24-36. |
| [3] | 薛伟辰.现代预应力结构设计[M].北京:中国建筑工业出版社,2003 |
| [4] | 陈肇元.土建工程的安全性和耐久性[M].建筑工业出版社,2002 |
| [5] | 梅葵花.FRP筋的特点及在桥梁工程中的应用[J].公路,2007(07):12-15. |
| [6] | ISIS M03-2001.Canadian Network of Centers of Excellence on Intelligent Sensing for Innovative Structures[S]. |
| [7] | Vaz Rodrigues,R .Shear Strength of Reinforced Concrete Bridge Deck Slabs[D].Lausanne,Switzerland:Lausanne Federal Polytechnic University,2007. |
| [8] | ACI 440.1R-2006.Guide for the Design and Construction of Concrete Reinforced with FRP Bars[S]. |
| [9] | N. A. Hoult;E. G. Sherwood;E. C. Bentz;M. P. Collins .Does the Use of FRP Reinforcement Change the One-Way Shear Behavior of Reinforced Concrete Slabs?[J].Journal of composites for construction,2008(2):125-133. |
| [10] | Tim Stratford;Chris Burgoyne .Shear Analysis of Concrete with Brittle Reinforcement[J].Journal of composites for construction,2003(4):323-330. |
| [11] | Yu Zheng;Guoyou Yu;Yunfeng Pan .Investigation of ultimate strengths or concrete bridge deck slabs reinforced with GFRP bars[J].Construction and Building Materials,2012(1):482-492. |
| [12] | Sherif EI-Gamal;Ehab El-Salakawy;Brahim Benmokrane .Behavior of Concrete Bridge Deck Slabs Reinforced with Fiber-Reinforced Polymer Bars Under Concentrated Loads[J].ACI structural journal,2005(5):727-735. |
| [13] | 沈聚敏;王传志;江见鲸.钢筋混凝土有限元与板壳极限分析[M].北京:清华大学出版社,1993:396-410. |
| [14] | 郑愚;Su Taylor;Des Robinson .基于压缩薄膜效应的混凝土桥面板极限承载力算法研究[J].哈尔滨工业大学学报,2010,42(04):1569-1576. |
| [15] | 朱海堂,李金章,王怡中,崔海波.四边简支FRP筋混凝土双向板受弯承载力分析[J].河南大学学报(自然科学版),2011(05):531-534. |
| [16] | Dimitrios D. Theodorakapoulos;Narayan Swamy .Analytical Model to Predict Punching Shear Strength of FRP-Reinforced Concrete Flat Slabs[J].ACI structural journal,2007(3):257-266. |
| [17] | JSCE 1997 Series 23,Recommendations for Design and Construction of Concrete Structures Using Continuous Fiber Reinforcing Materials,Concrete Engineering[S]. |
| [18] | CAN/CSA S806-12,Design and construction of building structures with fibre reinforced polymers[S]. |
| [19] | Matthys,S;Taerwe,L .Concrete slabs reinforced with FRP gridsⅡ:punching resistance[J].Journal of Composites for Constructions ASCE,2000,4(03):154-161. |
| [20] | Abdel Wahab El-Ghandour;Kypros Pilakoutas;Peter Waldron .Punching Shear Behavior of Fiber Reinforced Polymers Reinforced Concrete Flat Slabs: Experimental Study[J].Journal of composites for construction,2003(3):258-265. |
| [21] | Ospina C.E;Alexander S.D.B;Cheng J.J.R .Punching of Two-Way Concrete Slabs with Fiber-Reinforced Polymer Reinforcing Bars or Grids[J].ACI structural journal,2003(5):589-598. |
| [22] | Dimitrios D. Theodorakapoulos;Narayan Swamy .Analytical Model to Predict Punching Shear Strength of FRP-Reinforced Concrete Flat Slabs[J].ACI structural journal,2007(3):257-266. |
| [23] | Yu Zheng;Xueyi Fu;Zhongyu Lu;Yunfeng Pan .Investigation of structural behaviour of GFRP reinforced concrete deck slabs through NLFEA[J].Construction and Building Materials,2013(Aug.):60-77. |
| [24] | Sherif El-Gamal;Ehab El-Salakawy;Brahim Benmokrane .Influence of Reinforcement on the Behavior of Concrete Bridge Deck Slabs Reinforced with FRP Bars[J].Journal of composites for construction,2007(5):449-458. |
| [25] | K. Bouguerra;E.A. Ahmed;S. El-Gamal;B. Benmokrane .Testing of full-scale concrete bridge deck slabs reinforced with fiber-reinforced polymer (FRP) bars[J].Construction and Building Materials,2011(10):3956-3965. |
| [26] | ACI 318-2005.Building code requirements for reinforced concrete[S]. |
| [27] | Taylor,S.E;Rankin G.I.B;Cleland D.J .Real strength of highperformanec concrete bridge deck slabs[J].ICE Proceedings-Bridge Engineering,2003,156(02):81-90. |
| [28] | BD 81/02,Use of Compressive Membrane Action in Bridge Decks[S]. |
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