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| 基于无损检测的超役黄杉和杉木构件的剩余强度分析 | |
| 引用本文： | 张晋,王亚超,许清风,杨小敬,李向民.基于无损检测的超役黄杉和杉木构件的剩余强度分析[J].中南大学学报(自然科学版),2011,42(12). |
| 作者姓名： | 张晋 王亚超 许清风 杨小敬 李向民 |
| 作者单位： | 1. 东南大学混凝土及预应力混凝土结构教育部重点实验室,江苏南京,210096 2. 上海市建筑科学研究院上海市工程结构新技术重点实验室,上海,200032;山东电力工程咨询院有限公司,山东济南,250013 3. 上海市建筑科学研究院上海市工程结构新技术重点实验室,上海,200032 |
| 基金项目： | 上海市工程结构新技术重点实验室开放课题(2009-KF02); 国家“十一五”科技支撑计划项目(2006BAJ03A10-02) |
| 摘 要： | 为了评估超役木构件的损伤状况,确定其剩余强度,对东南大学老图书馆维修加固拆卸下来的一批木梁柱构件进行无损检测、材性试验研究.首先目测该批超役木构件的腐朽和虫蛀等级,利用射钉仪和木材阻抗仪,对木材的腐朽和虫蛀状况进行无损检测,并对2种仪器的检测结果进行相关性分析.然后截取小段构件制成小试件进行材性试验,包括顺纹抗压强度、顺纹抗拉强度,拟合出小试件强度和阻力之间的关系曲线；将剩余大段构件其余测点的阻力代入关系曲线,得到考虑腐朽和虫蛀影响的小试件强度.分析小试件强度和构件强度的差别,最终得到考虑腐朽和虫蛀影响的构件剩余强度.结果表明:目测分级大体可行,但部分测点目测等级不可靠；构件剩余抗拉强度和剩余抗压强度分别为15.31～25.89 MPa和8.46～13.73 MPa. |
| 关 键 词： | 无损检测 超役木构件 材性试验 小试件强度 剩余强度 |
Residual strength of service-beyond wood members of douglas fir and cedarwood using non-destructive testing |
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| ZHANG Jin , WANG Ya-chao , XU Qing-feng , YANG Xiao-jing , LI Xiang-min.Residual strength of service-beyond wood members of douglas fir and cedarwood using non-destructive testing[J].Journal of Central South University:Science and Technology,2011,42(12). | |
| Authors: | ZHANG Jin WANG Ya-chao XU Qing-feng YANG Xiao-jing LI Xiang-min |
| Institution: | ZHANG Jin1,WANG Ya-chao2,3,XU Qing-feng2,YANG Xiao-jing1,LI Xiang-min2 (1.Key Laboratory of Concrete and Prestressed Concrete Structures of Ministry of Education,Southeast University,Nanjing 210096,China,2.Shanghai Key Laboratory of New Technology Research on Engineering Structure,Shanghai Research Institute of Building Sciences,Shanghai 200032,3.Shandong Electric Power Engineering Consulting Institute Co.,Ltd.,Jinan 250013,China) |
| Abstract: | To check service-beyond wood members and determine their residual strength,researches on non-destructive testing techniques and mechanical tests of service-beyond wood members coming from the old library of Southeast University were carried out.First of all,the decadent and eaten levels of these members were viewed.Nail gun and Resistograph were used to test the decay and bitten damages.The correlations between the two kinds of instrument test data were researched.Secondly,small timber specimens were used t... |
| Keywords: | non destructive testing service-beyond wood members mechanical test strength of small timber specimens residual strength |
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