| Summary: | 碩士 === 國立成功大學 === 建築學系 === 106 === The 1999 Chi-Chi earthquake caused serious damages on tranditional timber frames. Dieh-Dou type timber frame which is one of the major types in Taiwan sustained severe damages. To exam the seismic behavior of the Dieh-Dou timber roof frame, a series of in-plane shaking table tests and out-of-plane static cyclic lateral loading tests were conducted in the study. Shaking table test was conducted on three roof frame specimens. The joints of column-primary beam were designed as pin joint to reduce the effects from the major joint. The test results indicated that the shear failure of Dou influenced stability of the roof frame structure the most. With the present of purlin supporters, deformation of the frame was decreased but damage of Dou and Shu became more serious. When the sliding of roof masses was prevented, deformation of the frame was significantly increased. For the out-of-plane cyclic loading test, constant vertical force was applied to three Dou-Gong unit specimens. The test results indicated that the horizontal Gong members acted more like a brace when they sustained to compression. While the specimen was deformed to the counter direction, the purlin supporter detouched with the purlin and the whole specimen rotated at the Shu-purlin joint which make the specimen tende to behave like a rigid body. A theoretical mechanical model was prposed to evaluate the structural performance of roof frame and Dou-Gong unit specimens. The estimated curve shows notable agreement with experimental results.
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