Seismic Responses of Cable-Stayed Bridges Influenced By Ground Motions With Different Sites Relative To Fault Rupture


Abstract eng:
The focus of this paper is to determine the seismic response of a cable-stayed bridge subjected to near-fault ground motions in different fault regions considering soil-structure interaction (SSI) effects. Based on the sites relative to the fault rupture, the spatial positions of the records are divided into three regions, named Forward Region (FR), Middle Region (MR) and Backward Region (BR). Three groups of near-fault ground motions in above regions are selected as the input from the 1999 Chi-Chi earthquake. The Sutong Cable-stayed Bridge (SCB), with a main span of 1088 m, is taken as an example. The results reveal that the properties of near-fault ground motions have obvious correlations with the dynamic responses of the bridge in 3 regions. The PGV and PGA can be identified as the key parameters governing the bridge response in MR. The intensity measure parameter of near-fault ground motions in FR suitable for the super-span bridge systems can be taken as PGV and PGV/PGA. For the bridges located in BR, the PGA, and fault distance can be preferentially selected as the governing parameter in BR.

Contributors:
Conference Title:
Conference Title:
16th World Conference on Earthquake Engineering
Conference Venue:
Santiago (CL)
Conference Dates:
2017-01-09 / 2017-01-13
Rights:
Text je chráněný podle autorského zákona č. 121/2000 Sb.



Record appears in:



 Record created 2017-01-18, last modified 2017-01-18


Original version of the author's contribution as presented on USB, paper 780.:
Download fulltext
PDF

Rate this document:

Rate this document:
1
2
3
 
(Not yet reviewed)