Structural Analysis and Reinforcement Technique of Taiwanese Traditional Dieh-Dou Timber Frame

Abstract

The 1999 Chi-Chi earthquake seriously damaged Taiwanese traditional historic timber buildings including the Dieh-Dou type timber frame To exam the mechanism and seismic performance of Dieh-Dou timber frame several experimental studies have been conducted but most of them focus on the local components instead of the global behavior On the other hand the damaged members weaken its structural capacity and won't be replaced before the major maintenance making the timber frame exposed in seismic risk Thus an appropriate reinforcement is needed This study aims to provide practical methods and advice for the structure analysis and reinforcement technique of Dieh-Dou timber frame For structural analysis rotational springs are adopted to simulate the flexural behavior of semi-rigid joints The rotational stiffness and yielding rotation angle of each rotational spring are calculated by mechanical formulas derived from previous researches Numerical models of Dieh-Dou timber frames are established by using OpenSees software and the pushover analysis and time history analysis are carried out after the models meet a good agreement with test results Analysis results show that numerical models are quite consistent with the past experimental results indicating that the numerical simulation has certain accuracy and reliability For reinforcement technique compressed wood and compressed bamboo are used because of its high strength mechanical property Bearing and shear resisting performance of wood nails and bamboo nails are evaluated by tests Test results show that specimens reinforced with wood nails and bamboo nails have the best reinforcing performance in partial compression test and shear test respectively

Date of Award	2019
Original language	English
Supervisor	Yu-Lin Chung (Supervisor)