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古城墙砖回弹检测技术研究*
丁伟1,王占雷2,刘波1,刘超1,李佩3
摘 要

 

1 河北建研科技有限公司, 石家庄 050021 2 河北省建筑科学研究院, 石家庄 0500213 河北建研工程技术有限公司, 石家庄 050021

 

摘要]以河北省范围内多项全国或省重点文物保护单位为对象,选取一定数量的古城墙砖,研究了竖向压力、含水率、不同约束条件等对其回弹测强的影响,建立了砌筑前后古城墙砖回弹值线性回归公式。并通过对古城墙砖回弹测强的研究,阐明了回弹值和抗压强度之间的相关性,建立了古城墙砖回弹测强的回归模型。通过实际工程项目的验证可知,该曲线的精度较好,可用于古城墙砖的回弹测强。

关键词]古城墙砖; 无损检测; 回弹法; 含水率; 相关系数

中图分类号:TU522.1      文献标识码:A      文章编号:1002-848X(2014)02-0083-04

 

Research on rebound detection technology of ancient city wall bricks

Ding Wei1, Wang Zhanlei2, Liu Bo1, Liu Chao1, Li Pei3

 (1 Hebei Building Research Technology Co., Ltd., Shijiazhuang 050021, China; 2 Hebei Academy of Building Research, Shijiazhuang 050021, China; 3 Hebei Construction Engineering Co., Ltd., Shijiazhuang 050021, China)

 

Abstract:

Based on a number of national or provincial key cultural relics protection units in Hebei province, a number of ancient city wall bricks were selected to study the influence of the vertical pressure, moisture content and different constraint conditions on rebound value. Linear regression formula of the ancient city wall brick rebound value before and after construction was set up. Through the study of the rebound value testing technology of ancient city wall bricks, the relationship between the rebound value and compressive strength was clarified and the ancient city wall brick rebound regression model was established. Through the validation of the actual project, the curve was proved to be precise to detect the rebound value and compressive strength of ancient city wall bricks.

 

Keywords:

ancient city wall brick; nondestructive detection; rebound method; moisture content; correlation coefficient

*河北省住建厅建设科学技术研究计划项目(2011122)。

作者简介:丁伟,学士,工程师,一级注册建造师,Email:ding800406@163.com

 

参考文献

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2JC/T 7961999回弹仪评定烧结普通砖强度等级的方法[S.北京:国家建筑材料工业局标准化研究所,1999.

3GB/T 503442004建筑结构检测技术标准[S.北京:中国建筑工业出版社,2004.

4GB/T 503152011砌体工程现场检测技术标准[S.北京:中国建筑工业出版社,2011.

5]管小军,顾祥林,顾筠,.回弹法现场检测既有砌体结构中烧结普通砖的强度[J.结构工程师,2004,20(5):44-46.

6]尹淑琴,王占林,张彩霞,.回弹法检测砌体中烧结多孔粘土砖抗压强度技术[J.砖瓦世界,2006(4):40-42.

7GB/T 25422003砌墙砖试验方法[S.北京:中国标准出版社,2003.

8ZHAO SHIYONG, WANG TIECHENG, WANG ZHANLEI, et al. Research of rebound strength detection curve for ancient architecture wall bricksC//2011 International Conference on Consumer Electronics, Communications and Networks (CECNet). 2011: 1568-1571.

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