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Experimental Study on Fire Resistance of One-Way Straight and Through Mortise-Tenon Timber Joints

  • Lingzhu Chen
  • Qingfeng XuEmail author
  • Chongqing Han
  • Xi Chen
  • Xiaofeng Hu
  • Zhengchang Wang
Conference paper
  • 26 Downloads

Abstract

Fire is one of the most frequent disasters in the world. Many traditional timber buildings were destroyed by fire, causing a large amount of culture and heritage loss. Timber joints play an important role in the stability of whole timber structures. The temperature development and fire resistance of mortise-tenon joints exposed to fire were experimentally studied in this paper. The effects of joint type and load ratio on their fire resistance were considered. Results showed that the capacity of one-way straight mortise-tenon joint was higher than through mortise-tenon joints. Temperature increased with increasing fire exposure time and decreased very slowly after the fire was stopped. The closer the thermocouples to the surface of timber beam and column were, the higher their temperature was. It was observed that for the mortise-tenon joints of the same type, the fire resistance decreased with load ratios. For the mortise-tenon joints subjected to the same load ratios, the fire resistance of one-way straight mortise-tenon joint was slightly higher than through mortise-tenon joints. The fire resistance of through mortise-tenon joints tested under the load ratio of 0.3 and 0.5 were 25 min and 20 min respectively, while the fire resistance of one-way straight mortise-tenon joints tested under the load ratio of 0.5 was 24 min.

Keywords

Qing-style timber building One-way straight mortise-tenon joints Through mortise-tenon joints Fire resistance Load ratio 

Notes

Acknowledgement

This work was financially supported by National Science Foundation of China (No. 51808339), Shanghai Rising-Star program (No. 17QB1403400) and Shanghai Science and Technology Commission Standard Program (No. 17DZ2202600).

References

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Copyright information

© Springer Nature Switzerland AG 2020

Authors and Affiliations

  • Lingzhu Chen
    • 1
  • Qingfeng Xu
    • 1
    Email author
  • Chongqing Han
    • 2
  • Xi Chen
    • 1
  • Xiaofeng Hu
    • 3
  • Zhengchang Wang
    • 3
  1. 1.Shanghai Key Laboratory of Engineering Structure SafetyShanghaiChina
  2. 2.Southeast University Architects and Engineers Co., Ltd.NanjingChina
  3. 3.Southeast UniversityNanjingChina

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