[1]江云帆,郭子雄,许秀林.大尺寸条石无浆砌缝力学性能试验[J].华侨大学学报(自然科学版),2020,41(1):1-7.[doi:10.11830/ISSN.1000-5013.201907013]
　JIANG Yunfan,GUO Zixiong,XU Xiulin.Test on Mechanical Properties of Large-Size Dry Stone Masonry Joint[J].Journal of Huaqiao University(Natural Science),2020,41(1):1-7.[doi:10.11830/ISSN.1000-5013.201907013]
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大尺寸条石无浆砌缝力学性能试验()
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《华侨大学学报（自然科学版）》[ISSN:1000-5013/CN:35-1079/N]

卷:
第41卷
期数:
2020年第1期
页码:
1-7
栏目:
出版日期:
2020-01-20

文章信息/Info

Title:
Test on Mechanical Properties of Large-Size Dry Stone Masonry Joint
文章编号:
1000-5013(2020)01-0001-07
作者:
江云帆1;  郭子雄1; 2;  许秀林1
1. 华侨大学 土木工程学院, 福建 厦门 361021;2. 华侨大学 福建省结构工程与防灾重点实验室, 福建 厦门 361021
Author(s):
JIANG Yunfan1;  GUO Zixiong1; 2;  XU Xiulin1
1. College of Civil Engineering, Huaqiao University, Xiamen 361021, China; 2. Key Laboratory for Structural Engineering and Disaster Prevention of Fujian Province, Huaqiao University, Xiamen 361021, China
关键词:
石结构;  无浆砌缝;  机器锯割条石;  低周反复加载试验;  滞回性能;  抗剪强度
Keywords:
stone structure;  dry masonry joint;  machine sawing stone block;  cyclic loading test;  hysteretic behavior;  shear strength
分类号:
TU363
DOI:
10.11830/ISSN.1000-5013.201907013
文献标志码:
A
摘要:
开展10个花岗岩无浆叠砌双剪试件的低周反复加载试验,试验主要参数包括竖向压应力和石材界面处理工艺.根据试验结果分析砌缝的界面损伤特征、滞回性能、耗能能力及抗剪强度.试验结果表明:砌缝受力经历弹性、界面磨损和滑移摩擦3个阶段;试件滞回曲线形状呈饱满矩形,表现出良好的变形性能及耗能能力;随着竖向压应力水平的提高,砌缝滞回耗能总量增加;受限于加工技术精度,机切与抛光界面表现为局部不平整接触,导致往复荷载作用下界面发生类“犁沟效应”,界面动摩擦力因类“犁沟效应”有所增大;机切面、抛光面和荔枝面试件的平均动摩擦系数分别为0.84,0.82,0.75.最后,提出无浆砌缝抗剪强度计算公式,可为无浆砌石墙的设计和研究提供参考.
Abstract:
Cyclic loading tests were carried out on ten granite dry masonry specimens with double joints. The main testing parameters were compressive stress and the treatment of the stone interface. The experimental results were discussed in terms of damage patterns, hysteretic behavior, energy dissipation capacity and shear strength of the joints. The shear behavior of the joint is characterized by three stages: elastic stage, interface wear stage and sliding stage. The hysteretic response of the specimens is approximately rectangular in shape, highlighting that the dry joint possess large deformation and energy dissipation capacity. The energy dissipation capacity of the joints improves with increase of compressive stress. Due to the limitation in the surface treatment, ploughing effect is observed in the machine-sawing and polished interfaces. Ploughing effect increases the frictional resistance of the interface. The average friction coefficients of machine-sawing, polished and buff-hammered interface joints are about 0.84, 0.82 and 0.75, respectively. Finally, an empirical expression to estimate the shear strength of dry masonry joints is proposed and compared with the experimental results, as a reference for the design of stone walls with dry masonry joints.

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备注/Memo

备注/Memo:
收稿日期: 2019-07-08
通信作者: 郭子雄(1967-),男,教授,博士,博士生导师,主要从事工程结构抗震减灾方向的研究.E-mail:guozxcy@hqu.edu.cn.
基金项目: 国家自然科学基金资助项目(51578254)http://www.hdxb.hqu.edu.cn
更新日期/Last Update: 2020-01-20