改性竹筋混凝土受弯构件力学性能试验研究
Experimental analysis of mechanical property of processed bamboo reinforced concrete flexural member
邹立华 1钟坤禄 1谢吉鸿 1张天宇 2李梁峰 2黄凯1
作者信息
- 1. 福州大学 土木工程学院，福州 350108
- 2. 福建省建筑科学研究院，福州 350025
- 折叠
摘要
针对竹筋混凝土结构存在的问题，提出了多种对竹筋的改性方法。在此基础上，对12根采用不同配筋和不同改性方法的受弯构件（11根竹筋混凝土梁和1根钢筋混凝土梁）进行了试验研究，分析了不同改性方法和不同配筋率竹筋混凝土受弯构件的力学性能、破坏形态及其影响因素。研究结果表明：竹筋能有效提高混凝土受弯构件的承载能力；经过适当方法改性后的竹筋能确保竹筋和混凝土之间的有效粘结，其正截面强度计算可以采用平截面假定；竹筋混凝土受弯构件的破坏均为脆性破坏，其破坏形态与其截面配筋率有关。
Abstract
To overcome the existing problems of bamboo reinforced concrete structure,several processing methods are proposed to improve the performance of bamboo bar. Experiments on twelve flexural members,including eleven bamboo reinforced concrete beams and one steel reinforced concrete beam,is carried out.The mechanical properties,failure modes and influential factors of flexural beams with different processing methods and reinforcement ratios are studied.The results show that:bamboo could improve effectively the flexural capacity of concrete beam,and the effective bonding between bamboo reinforcement and concrete could be achieved if the bamboo is processed by proper methods.Moreover,the plane-section assumption can be used for bearing capacity calculation of bamboo reinforced concrete beams. The failure mode of bamboo reinforced concrete beams is brittle fracture and the detailed fracture pattern is related to reinforcement ratios.
关键词
改性竹筋混凝土/受弯构件/力学性能/平截面假定/脆性破坏Key words
processed bamboo reinforced concrete/flexural members/mechanical properties/plane-section assumption/brittle fracture引用本文复制引用
基金项目
国家自然科学基金(51108091)
住房和城乡建设部研究开发项目(2009-R4-8)
出版年
2015
NETL
NSTL
维普
万方数据