插銷結合埋入式連結件應用於結構用集成材梁柱接合之剪斷抵抗性能

本研究利用35年生柳杉造林木製造結構用集成材，並利用兩種埋入式金屬連結件，透過不同數量之插銷，接合成為梁柱結構，探討接合之剪斷抵抗性能。結果顯示以平板型金屬連結件接合之最大剪斷承載力、降伏強度及能量吸收，分別較T字型連結件高32.7、51.0及56.3%，且兩種連結件之塑性率分別為3.35及4.22。接合之初始剛性以5支扣件組合者為最高，為2及3支扣件接合者之3.9及2.0倍，能量吸收則隨扣件數增加而大幅降低，5及3支扣件條件分別降至2支接合條件之18.6及52.7%。同時顯示以5支扣件接合之延展性不足，有較低之塑性率及較高之構造特性係數。根據實驗結果所推導之接合容許載重為規範所計算之長期容許剪力值的2.67倍，顯示插銷結合埋入式連結件之接合具有良好之剪斷承載性能。

關鍵字

結構用集成材；接合強度；插銷扣件；剪斷性能

並列摘要

The structural glulam members of Japanese cedar were produced from 35-yr-old plantation in the study. A beam-column structure specimen was assembled with two different embedded metal connectors and different number of pin fasteners to examine the shear-resisting performance of joints. The results indicated the maximum shearing capacity, yield strength, and energy absorption of the joint using flat type metal connector were 32.7, 51.0, and 56.3%, respectively, higher than those of using T-type connector. Ductility factor of a join t assembled with a flat type connector was 3.35 while a value of 4.22 for that with a T-type connector. The highest initial stiffness of a joint can be found in the case of fixed with 5 fasteners, which was 3.9 and 2.0 times of the joints fixed with 2 and 3 fasteners, respectively. As the number of fasteners increased to 3 and 5 pieces, the energy absorption of the joint reduced significantly to 52.7 and 18.6%. respectively, comparing to the joint fixed with 2 fasteners. Furthermore, lower ductility factor and higher structural characteristic factor were resulted in the joint assembled with 5 fasteners due to lack of plastic deformation. The allowable load capacity of a joint derived from the test results was 2.67 times of the long-term allowable shear strength based on the code estimation. This showed a good shear loading capacity of the joint using both developed metal connectors with pins as the fasteners.

並列關鍵字

Structural glulam ； Joint strength ； Pin fastener ； Shearing performance

國際替代計量

插銷結合埋入式連結件應用於結構用集成材梁柱接合之剪斷抵抗性能

全文下載

主題瀏覽