结构用胶合竹力学性能试验

合集下载
  1. 1、下载文档前请自行甄别文档内容的完整性,平台不提供额外的编辑、内容补充、找答案等附加服务。
  2. 2、"仅部分预览"的文档,不可在线预览部分如存在完整性等问题,可反馈申请退款(可完整预览的文档不适用该条件!)。
  3. 3、如文档侵犯您的权益,请联系客服反馈,我们会尽快为您处理(人工客服工作时间:9:00-18:30)。
Expຫໍສະໝຸດ Baidurimental research on mechanical properties of glubam
XIAO Yan1,2 ,YANG Ruizhen1 ,SHAN Bo1 ,SHE Liyong3 ,LI Lei1 ( 1. Key Laboratory of Building Safety and Energy Efficiency of China Ministry of Education,
Abstract: Glubam is a type of natural bamboo-fiber reinforced polymer composites. This paper focuses on the fundamental mechanical properties of glubam, including its modulus, tensile, compressive, flexural and shear strengths. Because glubam is a new structural material,there is no code or guideline to follow. By referring to relevant timber codes,including GB 1927 ~ 1943—1991 ‘Wood physical and mechanical properties test method’and ASTM D143-94 ( 2007) ‘Standard test methods for small clear specimens of timber’,considerable number of tests were conducted to obtain the values of modulus,tensile,compressive,bending and shear strengths. The relationships between tensile strength,and modulus and the main fiber orientation were studied. The tests also reveal that cold glued joints between glubam surfaces can weaken the compressive strength. Through the discussion on design methods of glubam structure,the recommended allowable stress values were given based on the Chinese allowable stress design method of timber and favorable design results were found compared with other types of glue laminated timber. Keywords: glubam; composites; tensile strength; modulus; compressive strength; bending strength; shear strength
基金项目: 国家自然科学基金重点项目( 50938002) 。 作者简介: 肖岩( 1961— ) ,男,河北衡水人,工学博士,教授。E-mail: yanxiao@ hnu. edu. cn 通信作者: 杨瑞珍( 1984— ) ,女,山西祁县人,博士研究生。E-mail: swijane@ gmail. com 收稿日期: 2012 年 2 月
建筑结构学报 Journal of Building Structures 文章编号: 1000-6869( 2012) 11-0150-08
第 33 卷 第 11 期 2012 年 11 月 Vol. 33 No. 11 Nov. 2012
018
结构用胶合竹力学性能试验研究
肖 岩1,2 ,杨瑞珍1 ,单 波1 ,佘立永3 ,李 磊1 ( 1. 湖南大学 教育部建筑安全与节能重点实验室,湖南长沙 410082;
Hunan University,Changsha 410082,China; 2. Department of Civil Engineering,University of South California,Los Angeles CA 90089,USA; 3. The Office of Tendering and Biding of Construction Projects of Zhenjiang City,Zhenjiang 212001,China)
2. 南加州大学 土木工程系,加利福尼亚洛杉矶 CA 90089; 3. 江苏省镇江市建设工程招标投标管理办公室,江苏镇江 212001)
摘要: 格鲁斑胶合竹是一种天然竹纤维增强复合材料,为研究其受拉、受压、受弯及受剪等基本力学性能,综合参考《木材物 理力学性能试验方法》、《木材无疵小试样的试验方法》等,进行了格鲁斑胶合竹材力学性能试验,得到了格鲁斑胶合竹抗压 强度、弹性模量、抗弯强度、抗剪强度值,通过分析获得了较高拟合优度的抗拉强度和弹性模量与荷载-主纤维角度变化关系 的指数拟合曲线。试验结果同时指出冷压胶合面对格鲁斑胶合竹材抗压强度有较强的削弱作用。最后,在对胶合竹结构 设计方法讨论的基础上,给出了以中国木材容许应力设计方法为基础的格鲁斑胶合竹的容许设计应力建议值,并与其他几 种胶合木材料进行了对比,表明格鲁斑胶合竹材能够满足建筑结构对材料主要力学性能的要求。 关键词: 格鲁斑胶合竹材; 复合材料; 抗拉强度; 弹性模量; 抗压强度; 抗弯强度; 抗剪强度 中图分类号: TU366. 3 TU317. 1 文献标志码: A
相关文档
最新文档