[1] Zhou Qian, Yan Weiming,. Experimental study on aseismic behaviorsof Chinese ancient tenon-mortise joint strengthened by CFRP [J]. Journal of Southeast University (English Edition), 2011, 27 (2): 192-195. [doi:10.3969/j.issn.1003-7985.2011.02.016]

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Experimental study on aseismic behaviorsof Chinese ancient tenon-mortise joint strengthened by CFRP()

CFRP加固古建筑榫卯节点抗震试验

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Journal of Southeast University (English Edition)[ISSN:1003-7985/CN:32-1325/N]

Volumn:

27

Issue:

2011 2

Page:

192-195

Research Field:

Civil Engineering

Publishing date:

2011-06-30

Info

Title:

Experimental study on aseismic behaviorsof Chinese ancient tenon-mortise joint strengthened by CFRP

CFRP加固古建筑榫卯节点抗震试验

Author(s):

Zhou Qian¹;  2;  Yan Weiming¹

¹ Beijing Key Laboratory of Earthquake Engineering and Structural Retrofit, Beijing University of Technology, Beijing 100124, China
² Imperial Palace Museum, Beijing 100009, China

周乾¹;  2;  闫维明¹

¹北京工业大学工程抗震与结构诊治北京市重点实验室, 北京 100124; ²故宫博物院, 北京 100009

Keywords:

tenon-mortise joint;  aseismic strengthening;  CFRP(carbon fibre reinforced plastic);  wooden construction;  Chinese ancient building

榫卯节点;  抗震加固;  碳纤维布;  木结构;  中国古建筑

PACS:

TU366.2

DOI:

10.3969/j.issn.1003-7985.2011.02.016

Abstract:

In order to well protect Chinese ancient buildings, aseismic behaviors of Chinese ancient tenon-mortise joints strengthened by carbon fibre reinforced plastic(CFRP)are studied by experiments. Based on the actual size of an ancient building, a wooden frame model with a scale of 1∶8 of the prototype structure is built considering the swallow-tail type of tenon-mortise connections. Low cyclic reversed loading tests are carried out including three groups of unstrengthened structures and two groups of structures strengthened with CFRP. Based on experimental data, moment-rotation angle hysteretic curves and skeleton curves for each joint are obtained. The energy dissipation capability, stiffness degradation and deformation performance of the joints before and after being strengthened are also analyzed. Results show that after being strengthened with CFRP, the tenon value pulled out of the mortise is reduced; the bending strength and the energy dissipation capabilities of the joint are enhanced; stiffness degradation of the joint is not obvious; and the deformation performance of the joint remains good. Thus, the CFRP has good effects on strengthening the tenon-mortise joints of Chinese ancient buildings.

为了更好地保护古建筑, 采用试验方法研究了CFRP加固古建筑榫卯节点后的抗震性能.基于某古建筑实际尺寸, 制作了1∶8缩尺比例的木结构空间框架模型, 并考虑梁柱连接为燕尾榫形式.进行了低周反复加载试验, 包括3组未加固构架试验和2组CFRP加固试验.基于试验相关数据, 获得了节点的弯矩-转角滞回曲线和骨架曲线, 并对比分析了节点加固前后的耗能能力、刚度退化和延性等抗震指标.结果表明:CFRP加固榫卯节点后, 节点拔榫量减小, 抗弯承载力及耗能能力均有所提高, 刚度退化不明显, 且加固后的节点仍有良好的延性性能.因此, CFRP加固古建筑榫卯节点具有良好的效果.

References:

[1] Chang Wenshao, Hsu Minfu, Komatsu Kohei. Rotational performance of traditional Nuki joints with gap Ⅰ: theory and verification[J]. Journal of Wood Science, 2006, 52(1):58-62.
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Memo

Memo:

Biographies: Zhou Qian(1975—), male, graduate; Yan Weiming(corresponding author), male, doctor, professor, yanwm@bjut.edu.cn.
Foundation items: The Cultural Ministry Foundation of China(No.17-2009), the Research Foundation of Palace Museum(No.2007-4).
Citation: Zhou Qian, Yan Weiming. Experimental study on aseismic behaviors of Chinese ancient tenon-mortise joint strengthened by CFRP[J].Journal of Southeast University(English Edition), 2011, 27(2):192-195.[doi:10.3969/j.issn.1003-7985.2011.02.016]

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