Evaluation of elastic stiffness in bolted timber joints for applying turn-of-nut method

Journal of Wood Science

Doppo Matsubara¹  Masaki Teranishi² 

[1] Kindai University;Niigata University;

关键词: Turn-of-nut;    Bolted timber joints;    Elastic stiffness;    Tightening;    Spring model;   

DOI  :  10.1186/s10086-022-02038-1

来源: DOAJ

【 摘 要 】

Abstract The mechanical performance of bolt joints in wooden structures is known to vary significantly with the initial tightening force (axial force) of the bolts during the construction work. When a joining method that considers axial force is applied to a structure, the control of the axial force is important. This study attempts to evaluate the elastic stiffness of bolted timber joints during tightening for the purpose of applying the turn-of-nut tightening method, one of the methods for controlling axial force. Considering the elastic stiffness of joints during tightening as a series spring model using the spring constant of the bolt and the embedment spring constant of the washer, elastic stiffness is calculated using the washer embedment spring constant obtained through a washer embedment test. This result is compared with the elastic stiffness obtained through the tightening test using four species of timber. It was found that while the washer embedment spring constant varies greatly with timber species, the calculated values agreed well with the test results.

【 授权许可】

Unknown