APPLICATIONS OF ULTRASONIC NONDESTRUCTIVE TESTING TECHNIQUE IN ANCIENT BUILDING TESTING: TAKE THE LINTELS OF THE MAIN HALL OF ANCESTOR'S MONASTERY OF THE SHAOLIN TEMPLE AS AN EXAMPLE
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摘要: 初祖庵作为登封"天地之中"历史建筑群的代表性建筑之一,有着重要的历史价值。初祖庵大殿作为初祖庵主殿,是庵内现存时代最早的一座木构建筑,迄今已有800多年历史,虽然经过屡次修葺,但目前依然存在大量问题。为了更好地了解初祖庵大殿现有阑额的残损情况,测量了初祖庵大殿不同位置的6条阑额,并得到其外观尺寸、含水率、挠度等参数,评价了阑额的安全状态;通过超声波无损探伤仪对初祖庵大殿4条阑额进行检测并初步分析,介绍了利用箱线图和计算公式选取异常点的分析方法,得出不同的残损点,计算了4条阑额的动弹性模量与残余弹性模量,将阑额的力学性能和声学性能结合判断,为后续古建勘察与修复提供依据。Abstract: Ancestor's Monastery, as one of the representative buildings of "The Center of Heaven and Earth" in Dengfeng city, has an important historical value. As the main hall of Ancestor's Monastery, it is the earliest wooden structure in the ancestor's monastery. It has a history of more than 800 years. Although after repeated repairs, there are still a lot of problems. In order to understand the damage of the main hall of Ancestor's Monastery, the number of lintels at six different positions in the main hall of Ancestor's Monastery was measured, and the parameters, such as external sizes, moisture content, and deflections, were obtained to evaluate the safety state of the lintels. Ultrasonic nondestructive testing technique was applied on testing and preliminary analysis for four lintels in the main hall. The analysis method of selecting abnormal points by boxplot and calculation formula was introduced, and different damage points were obtained. The dynamic elastic modulus and residual elastic modulus of four lintels were calculated and the mechanical and acoustic properties of those lintels were combined to judge, providing a basis for the subsequent survey and repair of this kind of buildings.
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[1] LI Z R, QUE Y L, ZHANG X L, et al. Shaking Table Tests of Dou-Gong Brackets on Chinese Traditional Wooden Structure:A Case Study of Tianwang Hall, Luzhi, and Ming Dynasty[J]. Bioresources, 2018, 13(4):9079-9091. [2] FERNANDO T, GIOVANNI C, MAHESH D. A Novel Methodology for Condition Assessment of Wood Poles Using Ultrasonic Testing[J]. NDT & E International, 2012, 52:149-156. [3] ADAM S, MEGAN M G, FRANK C B, et al. Detection and Assessment of Decay in Wooden Utility Poles Using an Acoustic Approach[J]. International Journal of Environmental Protection, 2013, 3(8):13-28. [4] 索会迎. 超声波无损检测技术应用研究[D]. 南京:南京邮电大学, 2012. [5] 刘铁男. 基于超声波活立木内部腐朽衰减成像的研究[D]. 哈尔滨:东北林业大学, 2010. [6] 童丽萍, 刘超文. 初祖庵大殿木构架承重体系结构性能分析[J]. 结构工程师, 2018(1):9-15. [7] 李诫. 营造法式:四库全书本, 丁本, 陶本, 故宫本, 张蓉镜本[M].北宋:1103. [8] 张十庆. 北构南相:初祖庵大殿现象探析[J]. 建筑史, 2006(00):84-89. [9] 祁英涛. 河南登封少林寺初祖庵大殿修缮工程初步设计方案说明书[Z].郑州:河南省文物局档案馆, 1982. [10] 全国木材标准化技术委员会.古建筑木构件的非破坏性检测方法及腐朽分级:LY/T 2146-2013[S]. 北京:中国标准出版社, 2013. [11] 中华人民共和国住房和城乡建设部.古建筑木结构维护与加固技术规范:GB/T 50165-2020[S]. 北京:中国建筑工业出版社, 2020. [12] 中华人民共和国住房和城乡建设部.木结构设计标准:GB 50005-2017[S].北京:中国建筑工业出版社, 2018. [13] 郭志恭. 中国文物建筑保护及修复工程学[M]. 北京:北京大学出版社, 2014. [14] 《超声波探伤技术及探伤仪》编写组. 超声波探伤技术及探伤仪[M]. 北京:国防工业出版社, 1977. [15] 中国工程建设标准化协会.超声法检测混凝土缺陷技术规程:CECS 21:2000[S].北京:中国工程建设标准化协会, 2001. [16] 中华人民共和国国家质量监督检验检疫总局.木材抗弯弹性模量测定方法:GB/T 1936.2-2009[S].北京:中国标准出版社, 2009. [17] 张训亚. 兴安落叶松木材性质的声-超声技术预测[D]. 北京:中国林业科学研究院, 2011.
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