| 摘要 |
PURPOSE: An expandable joint device is provided to suppress impact and noise by a vehicle passing by a tunnel or an underground road way. CONSTITUTION: An expandable joint device comprises a bottom plate(10), a side plate(20), an angle(30), an elastic member(40), a bolt(50), an upper plate(60), and a space part. The side plate is contacted with the both sides of the bottom plate. The elastic member is formed on the angle coupled with the side plate and a combining groove(32) is formed along the side direction of the side plate. The upper plate is coupled with the bonding groove and cover gap between the side plates. The space part is filled with the filler. |
