Buy article PDF
The purchased file will be sent to you
via email after the payment is completed.
US$ 35
|
Structural Engineering and Mechanics Volume 12, Number 4, October 2001 , pages 347-362 DOI: https://doi.org/10.12989/sem.2001.12.4.347 |
|
|
|
A study on preventing the fall of skew and curved bridge decks by using rubber bearings |
||
Katsushi Ijima, Hiroyuki Obiya, Gunji Aramaki and Noriaki Kawasaki(Japan)
|
||
| Abstract | ||
|
The paper deals with preventing the collapse of deck structures of skew and curved bridges during earthquakes, by the means of supporting the bridges by rubber bearings and permitting pounding between the decks and the abutments. Seismic response during pounding is characterized by various phenomena, such as the caging of bridge decks between abutments during an earthquake or decks popping out. These behaviors depend on only a small difference in seismic intensity. Regarding the global characteristics of a seismic response, smaller clearance between a deck and its abutments results in smaller impact damage of the abutments as well as lesser deformation of the rubber bearings. Similarly, smaller clearance between a deck and the side blocks results in smaller damage. The stiffnesses of the bearings and the stiffness ratio between them control the deck displacement. In short to medium length bridges, zero clearance between a deck and the abutments or the deck and the side blocks is the most effective way in preventing the deck from falling and limits the damage to the abutments or the side blocks. | ||
| Key Words | ||
| prevention of deck fall; skew bridge; curved bridge; seismic response with pounding. | ||
| Address | ||
| Katsushi Ijima, Hiroyuki Obiya, Gunji Aramaki and Noriaki Kawasaki, Department of Civil Engineering, Saga University, 1 Honjo, Saga, Japan | ||