Response of Short Span Continuous Girder Bridge under Spatially Varying Multi-Point Earthquake Waves Excitation
This paper discusses the implications of spatial variation of earthquake ground motion on the dynamic response of a short span continuous girder bridge. The wave passage, incoherence, and site-response effects of earthquake ground motions between the piers on the internal forces are investigated. Four site conditions are considered representing soft soil, sandy soil, firm soil, and rock bed. A finite element model of the short span bridge is built up, and its seismic responses are numerically simulated under five cases: the uniform excitation and the non-uniform excitation considering traveling wave effect, incoherence, and local site effect. The soil-structure interaction is simulated using spring elements. The results show that, for short span continuous girder bridge (25 m in this case), the maximum internal forces of piers are reduced when wave passage effect is taken into account. The spatial effect of the ground motion depends on the properties of the layers of soil. With the decreasing of the stiffness of soil, the shearing force and bending moment at the bottom of piers increase when the short span continuous girder bridge is excited using spatially variable earthquake ground motions.
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Availability:
- Find a library where document is available. Order URL: http://worldcat.org/isbn/9780784481899
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Supplemental Notes:
- © 2018 American Society of Civil Engineers.
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Corporate Authors:
American Society of Civil Engineers
1801 Alexander Bell Drive
Reston, VA United States 20191-4400 -
Authors:
- Fan, Shuli
- Shi, Yi
- Liu, Chunguang
- Chen, Jianyun
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Conference:
- 16th Biennial International Conference on Engineering, Science, Construction, and Operations in Challenging Environments
- Location: Cleveland Ohio, United States
- Date: 2018-4-9 to 2018-4-12
- Publication Date: 2018
Language
- English
Media Info
- Media Type: Web
- Pagination: pp 1018-1026
- Monograph Title: Earth and Space 2018: Engineering for Extreme Environments
Subject/Index Terms
- TRT Terms: Bridge piers; Earthquake resistant design; Girder bridges; Soil mechanics
- Subject Areas: Bridges and other structures; Highways;
Filing Info
- Accession Number: 01851561
- Record Type: Publication
- ISBN: 9780784481899
- Files: TRIS, ASCE
- Created Date: Jul 18 2022 9:27AM