竹材力学性能及混凝土环境中影响  

Study on Mechanical Properties of Bamboo and Environmental Effects in Concrete

作　　者：祝明桥[1] 张紫薇 王华[1] 龙勇[1] Zhu Mingqiao;Zhang Ziwei;Wang Hua;Long Yong(College of Civil Engineering,Hunan University of Science and Technology,Xiangtan 411201,China)

机构地区：[1]湖南科技大学土木工程学院,湖南湘潭411201

出　　处：《湖南科技大学学报（自然科学版）》2020年第3期50-56,共7页Journal of Hunan University of Science And Technology：Natural Science Edition

基　　金：国家自然科学基金资助项目(51578236)。

摘　　要：为研究自然风干下的竹材含水率对材料力学性能的影响,对相同产地的楠竹进行了材料试验.试验设计变量:竹材自然风干时长和浇筑在竹芯-混凝土板中竹材有、无防水处理.研究结果表明:竹材的含水率对该材料抗拉强度影响显著,其中试验竹材的含水率为11.5%时材料性能最优;混凝土环境中的竹材受环境腐蚀严重,其中无防水处理竹材的强度和延性显著降低,材料呈脆性破坏;通过试验总结出了竹材拉伸应力-应变本构关系,同时提出了该竹材抗拉强度设计值取60MPa为最佳,该研究为竹材在混凝土结构中应用,提供了理论依据.In order to study the influence of the moisture content of the bamboo material under natural air drying on the mechanical properties of the material,a material test was carried out on the bamboo of the same origin.The test design variables were:the natural air-drying time of the bamboo material and whether the bamboo material was poured into the bamboo core bamboo concrete slab with or without waterproof treatment.The research structure shows that:the moisture content of bamboo has a significant effect on the tensile strength of the material,and the material performance is optimal when the moisture content of the tested bamboo is 11.5%;the bamboo in the concrete environment is severely corroded by the environment,and the strength and The ductility is significantly reduced,and the material exhibits brittle failure;the tensile stress-strain constitutive relationship of bamboo is summarized through experiments,and it is proposed that the design value of the tensile strength of the bamboo is 60 MPa as the best.This study provides a theoretical basis for the application of bamboo in concrete structures.

关 键 词：竹材 含水率 抗拉强度 本构关系 环境影响 

分 类 号：TU531.1[建筑科学—建筑技术科学]