Dynamic characteristics of a long span seismic isolated bridge

被引：47

作者：

Boroschek, RL ^{[1
]}

Moroni, MO ^{[1
]}

Sarrazin, M ^{[1
]}

机构：

[1] Univ Chile, Dept Civil Engn, Santiago, Chile

来源：

ENGINEERING STRUCTURES | 2003年 / 25卷 / 12期

关键词：

base isolated bridge; structural monitoring; ambient vibration; response records; earthquake response;

D O I：

10.1016/S0141-0296(03)00113-5

中图分类号：

TU [建筑科学];

学科分类号：

0813 ;

摘要：

The central zone of Chile is located in a high seismic risk area with occurrence of magnitude 7 earthquakes every 10 years and magnitude 8 events every 90 years. This paper deals with the mechanical and dynamic characteristics of a 383 in long seismic isolated bridge located in that area. The tests carried out on rubber components, isolators and the bridge structure are presented. Some simple structural models that show good correlation with measured response are also addressed. A strong motion permanent network installed on the bridge allowed the recording of ambient-traffic vibrations as well as seismic motions. Seismic records show the beneficial effect of the isolation in the horizontal direction, but important amplification occurs in the vertical direction for relatively high frequency components. (C) 2003 Elsevier Ltd. All rights reserved.

引用

页码：1479 / 1490

页数：12

共 13 条

[1] Experimental verification of basic analytical assumptions used in the analysis of structural wall buildings [J].