针对竹材弹性模量低、受弯试件截面刚度小、易发生受拉区竹纤维拉断破坏等不足,提出配筋竹结构的概念,给出了配筋竹结构的关键制造工艺,通过4个重组竹受弯试件的四点弯曲试验,研究了配筋竹试件的破坏形态及承载特性.研究参数包括筋材类型和筋材面积.研究结果表明,配筋试件的承载力及截面刚度显著提高,配置钢筋试件刚度提高效果优于FRP筋试件,由于配筋的增强作用,竹材的受压塑性能够充分发展,配筋试件表现出更加明显的塑性发展过程,其上、下边缘的极限压应变和极限拉应变均显著大于对比试件,截面应变分布符合平截面假定,内部筋材与外部竹材的应变对比表明内部筋材与竹材能够很好地共同工作.配筋竹结构是有效提高竹结构工作性能的一种新型结构.
参考文献
| [1] | M. Mahdavi;P. L. Clouston;S. R. Arwade.Development of Laminated Bamboo Lumber: Review of Processing, Performance, and Economical Considerations[J].Journal of Materials in Civil Engineering,20117(7):1036-1042. |
| [2] | YuDW;Tan H W;RuanYJ.A future bamboo-structure residential building prototype in China:Life cycle assessment of energy use and carbon emission[J].Energy and Buildings,201143(10):2638-2646. |
| [3] | 孙正军;程强;江泽慧.竹质工程材料的制造方法与性能[J].复合材料学报,2008(1):80-83. |
| [4] | Terai M;Minami K.Fracture behavior and mechanical properties of bamboo reinforced concrete members[J].Procedia Engineering,201110:2967-2972. |
| [5] | M. Mahdavi;P.L. Clouston;S.R. Arwade.A low-technology approach toward fabrication of Laminated Bamboo Lumber[J].Construction and Building Materials,2012:257-262. |
| [6] | Lugt V;Dobbelsteen V;Janssen J.An environmental,economic and practical assessment of bamboo as a building material for supporting structures[J].Construction and Building Materials,200620(10):648-656. |
| [7] | 魏洋;张齐生;蒋身学;吕清芳;吕志涛.现代竹质工程材料的基本性能及其在建筑结构中的应用前景[J].建筑技术,2011(5):390-393. |
| [8] | Yan Xiao;Quan Zhou;Bo Shan.Design and Construction of Modern Bamboo Bridges[J].Journal of Bridge Engineering,20105(5):533-541. |
| [9] | Yushun Li;Huangying Shen;Wei Shan;Tianshi Han.Flexural behavior of lightweight bamboo-steel composite slabs[J].Thin-Walled structures,2012:83-90. |
| [10] | 魏洋;吕清芳;张齐生;禹永哲;吕志涛.现代竹结构抗震安居房的设计与施工[J].施工技术,2009(11):52-54. |
| [11] | 陈复明;江泽慧;王戈;邱亚新;刘杏娥;程海涛.瓦楞型竹束单板复合材料的制备及力学性能表征[J].复合材料学报,2013(3):82-86. |
| [12] | Antonio Borri;Marco Corradi;Andrea Grazini.A method for flexural reinforcement of old wood beams with CFRP materials[J].Composites, Part B. Engineering,20052(2):143-153. |
| [13] | 关苏军;万春风;汪丽娜;徐英莲;陈锦祥.玄武岩纤维增强木塑复合材料的力学性能[J].复合材料学报,2011(5):162-167. |
| [14] | Laura De Lorenzis;Vincenza Scialpi;Antonio La Tegola.Analytical and experimental study on bonded-in CFRP bars in glulam timber[J].Composites, Part B. Engineering,20054(4):279-289. |
| [15] | Enhancement Of The Flexural Performance Of Retrofitted Wood Beams Using Cfrp Composite Sheets[J].Construction and Building Materials,20091(1):411-422. |
| [16] | 蒋身学;张齐生;傅万四;穆国君.竹材重组材高频加热胶合成型压机研制及应用[J].林业科技开发,2011(3):109-111. |
| [17] | GB 50005-2003.木结构设计规范[S].北京:中国建筑工业出版社,2003. |
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