Naslov
SEISMIC RESPONSE OF THE LONG COUNTINUOUS RC BRIDGE

Autori
Varevac, Damir ; Markulak, Damir ; Truhar, Ninoslav

Vrsta, podvrsta i kategorija rada
Radovi u zbornicima skupova, cjeloviti rad (in extenso), znanstveni

Izvornik
Concrete Structures for Traffic Network / Sruma, Vlastimir - Hradec Kralove : Czech Concrete Society, 2006, 231-237

Skup
The 2nd Central European Congress on Concrete Engineering

Mjesto i datum
Hradec Králové, Češka Republika, 21.09.2006. - 22.09.2006

Vrsta sudjelovanja
Predavanje

Vrsta recenzije
Međunarodna recenzija

Ključne riječi
regular bridges; eigenvalues; stiffness ratio; modal decomposition

Sažetak
Bridges are structures which are very sensitive to the transversal excitation. Some recent events have shown this fact in very drastic fashion (Loma Prieta 1989, Northridge 1994, Kobe 1995.). Dynamic analysis of such structures may be time consumable due to complicated response and large number of the degrees of freedom, but it is necessary step in the preliminary stage of the design process. This paper presents simple method for obtaining eigenvalues, eigenvectors and participation masses of the continuous girder bridge. It is shown that bridges with the same stiffness ratio between piers and the bridge deck have dynamic properties in the direct relationship, assuming that their span ratios are the same. Procedure shown in the paper presents simple method for obtaining these dynamic characteristics, using as input just simple geometry of the cross sections. This is useful in the preliminary stage of the design because all the important dynamic parametars are calculated very fast. By changing stiffness ratio one can customize bridge response and reduce seismic forces acting on the bridge in the transversal direction, according to microseismic location of the bridge.

Izvorni jezik
Engleski

Znanstvena područja
Građevinarstvo

POVEZANOST RADA