[1]刘德贵,陈科材,邓云毅,等.不同使用年限的柏木基本材料力学性能试验对比研究[J].西安建筑科技大学学报(自然科学版),2019,51(06):846-852.[doi:10.15986/j.1006-7930.2019.06.011]
 LIU Degui,CHEN Kecai,DENG Yunyi,et al.Experimental study of the influence of service time on the basic material mechanical properties of cedar-wood[J].J. Xi’an Univ. of Arch. & Tech.(Natural Science Edition),2019,51(06):846-852.[doi:10.15986/j.1006-7930.2019.06.011]
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不同使用年限的柏木基本材料力学性能试验对比研究()
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西安建筑科技大学学报(自然科学版)[ISSN:1006-7930/CN:61-1295/TU]

卷:
51
期数:
2019年06期
页码:
846-852
栏目:
出版日期:
2019-12-31

文章信息/Info

Title:
Experimental study of the influence of service time on the basic material mechanical properties of cedar-wood
文章编号:
1006-7930(2019)06-0846-07
作者:
刘德贵1陈科材2邓云毅1李建春1
(1.西南科技大学 土木工程与建筑学院,四川 绵阳 621010;2.宜宾市公路局,四川 宜宾 644000;3.石榴置业集团股份有限公司,北京 102488)
Author(s):
LIU Degui1CHEN Kecai2DENG Yunyi1LI Jianchun1
(1.School of Civil Engineering and Architecture, Southwest University of Science and Technology, Mianyang 621010, China; 2.Yibin Highway Bureau, Yinbin 644000, China;3.Pomegranate Real Estate Group CoLtd,Beijing 102488, China)
关键词:
柏木抗压强度抗拉强度弯曲抗拉强度抗弯弹性模量
Keywords:
cedar-woodcompression strengthtensile strengthbending tensile strengthbending elasticity modulus
分类号:
TU33
DOI:
10.15986/j.1006-7930.2019.06.011
文献标志码:
A
摘要:
木材的抗压、抗拉、抗弯强度等基本力学性能指标受环境温度、湿度等因素影响,最终表现为随使用时间而变化,而基本力学性能指标随时间的变化将对木结构的全寿命周期内的结构受力性能产生影响.为此,通过调研收集了4种不同使用年限(时间)的木结构建筑使用过的柏木,对这些柏木进行了抗压、抗拉和抗弯性能试验,获取了不同使用年限(时间)柏木的抗压强度、抗拉强度和弯曲抗拉强度及弹性模量等力学性能指标,探讨了柏木随使用时间年限的增长,其基本力学性能指标的变化,分析了上述力学性能指标随时间变化的规律.试验结果表明,柏木顺纹抗压强度随使用年限的增长而逐渐降低,使用年限越长,降低越明显;柏木顺纹抗拉强度、弯曲抗拉强度和抗弯弹性模量早期都表现出一定的增长,到一定年限(本试验为10 a)达到最大值,然后随使用年限的增长而逐渐降低;随使用年限增长,柏木会表现出明显的脆性.柏木等木材随使用时间增长其力学性能的变化应在木结构的全寿命周期受力性能的研究中引起重视.
Abstract:
The basic mechanical properties,such as the compression strength,tensile strength and bending strength of wood, will be affected by temperature and humidity etc, it finally show that the mechanical properties influenced by the time.Therefore, with the increase of service time,the mechanical behavior of wood structure in the Total Life Cycle would be influenced by the changing of the mechanical properties indexesIn this paper, four different service time cedarwood were collected by investigation, and the compression, tensile and bending tests were conducted for the four different service time cedar-wood. The compression strength, tensile strength, bending tensile strength and bending elasticity modulus were obtained for the four different service time cedarwood, and the regulation were discussed and analyzed for that the compression strength, tensile strength, bending tensile strength and bending elasticity modulus were changed by the increase of the service time. These tests results show that the compression strength decreases gradually with the increase of service time, and the longer the service time is, the more obvious the decrease is; the tensile strength, compression tensile strength and bending elasticity modulus of cedar-wood show a certain increase in the early stage, reaching the maximum value in a certain period of time (this test is 10 years), and then declining with the increase of service time; and the cedar-wood show obvious brittleness with the increase of the service time. The phenomenon that mechanical properties of wood, such as cedar-wood, are changed with the increase of service time should be paid more attention in the study of the mechanical properties of wood structures in the Total Life Cycle.

参考文献/References:

[1]王竹君,夏晋,金伟良.一种改进的工程结构全寿命设计理论指标体系[J].建筑结构学报,2019,40(1):40-48.

WANG Zhujun, XIA Jin, JIN Weiliang. Modified lifecycle design index system of engineering structures[J].Journal of Building Structures,2019,40(1):40-48.
[2]李宏男, 郑晓伟, 李超.高性能结构抗多次多种灾害全寿命性能分析与设计理论研究进展[J].建筑结构学报,2019,40(2):56-69.
LI Hongnan, ZHENG Xiaowei, LI Chao. Research progress on lifecycle multihazardbased design theory for highperformance structures[J].Journal of Building Structures,2019,40(2): 56-69.
[3]陈国营. 古建筑旧木材材质变化及影响建筑形变的研究[J]. 古建园林技术, 2003(3): 49-52.
CHEN Guoying. Study on the change of old wood material of ancient buildings and its influence on building deformation[J].Ancient Garden Technology,2003(3): 49-52.
[4]CERHARDS C C. Time related effects on wood strength: A linear cumulative damage theroy[J]. Wood Science, 1979, 11(3):139144.
[5]LEICESTER R H, COLE I S, FOLIENTE G C, et al. Prediction models for durability of timber construction[C]//The 5th world conference on Timber Engineering. (WLTE1908)[S.l].1998,2:2-10.
[6]徐明刚,邱洪兴.古建筑旧木材材料性能试验研究[J].工程抗震与加固改造,2011,33(4): 53-55.
XU Minggang, QIU Hongxing. Experimental study on properties of aged wood of ancient architecture[J]. Earthquake Resistant Engineering and Retrofitting, 2011, 33(4): 53-55.
[7]赵鸿铁,张风亮,薛建阳,等.古建筑木结构的结构性能研究综述[J].建筑结构学报,2012,33(8):1-10.
ZHAO Hongtie, ZHANG Fengliang, XUE Jianyang, et al. Research review on structural performance of ancient timber structure[J].Journal of Building Structures,2012,33(8):1-10.
[8]谢妍.古建筑木结构修缮加固时木材材料强度取值探讨[J].建材与装饰,2016(8):126-127.
XIE Yang. Discussion on the strength value of wood material in the repair and reinforcement of ancient building wood structure[J].Building Materials and Decoration, 2016 (8): 126-127.
[9]中华人民共和国住房和城乡建设部.木结构试验方法标准:GBT:50329-2012[S].北京:中国建筑工业出版社,2012.
Ministry of Housing and UrbanRural Development of the People′s Republic of China. Standard for test methods of timber structures: GBT 50329-2012[S].Beijing: China Architecture & Building Press,2012.
[10]中国国家标准化管理委员会.木材含水率测定方法:GBT 1931-2009[S].北京:中国标准出版社,2009.
Standardization Administration of the Peoples Republic of China. Method for determination for moisture of wood: GBT 1931-2009[S].Beijing:Standards Press of China,2009.
[11]中国国家标准化管理委员会.木材顺纹抗压强度试验方法:GB/T 1935-2009[S].北京:中国标准出版社,2009.
Standardization Administration of the Peoples Republic of China. Method of testing in compressive strength parallel to grain of wood:GBT 1935-2009[S].Beijing: Standards Press of China,2009.
[12]中国国家标准化管理委员会.木材顺纹抗拉强度试验方法:GBT 1938-2009 [S].北京:中国标准出版社,2009.
Standardization Administration of the People`s Republic of China. Method of testing in tensile strength parallel to grain of wood:GBT 1938-2009[S].Beijing:Standards Press of China,2009.
[13]中国国家标准化管理委员会.木材抗弯弹性模量测定方法:GBT 1936.2-2009[S].北京:中国标准出版社,2009.
Standardization Administration of the People`s Republic of China. Method of determination of modulus of elasticity in static bending of wood: GBT/1936.2-2009 [S].Beijing: Standards Press of China,2009.
[14]中国国家标准化管理委员会.木材抗弯强度试验方法:GBT 1936.1-2009[S].北京:中国标准出版社,2009.
Standardization Administration of the Peoples Republic of China. Method of testing in bending strength of wood:GBT 1936.1-2009[S].Beijing: Standards Press of China, 2009.
[15]古建筑木结构维护与加固规范编制组.古建筑木结构用材的树种调查及其主要材性的实测分析[J].四川建筑科学研究,1994(1):11-14.
Code Compilation Group for Maintenance and Reinforcement of Ancient Building Timber Structure. Investigation of wood species used for timber structure of ancient buildings and measurement and analysis of its main material properties[J].Sichuan Building Science Research of,1994(1):11-14.

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备注/Memo

备注/Memo:
收稿日期:2019-01-25修改稿日期:2019-11-21
基金项目:四川省科技厅计划基金资助项目(2019YJ0437)
第一作者:刘德贵(1983-),男,博士,讲师,从事组合结构方面研究.E-mail:shll830520@163.com
更新日期/Last Update: 2020-01-21