Shaking table test of a high-speed railway bridge with a new isolation system

•A functional isolation system for high-speed railway bridges is proposed.•The performance-based optimum design for the railway bridge with a new system was carried out.•Shaking table test was performed on a high-speed railway bridge specimen with the new system.•The system is expected to offer a co...

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Bibliographic Details
Published in:Engineering structures 2019-10, Vol.196, p.109315, Article 109315
Main Authors: Zou, Shuang, Wenliuhan, Heisha, Zhou, Fulin
Format: Article
Language:English
Subjects:
Acceleration
Airport expansion
Bending moments
Bridge construction
Bridges
Design
Design optimization
Functional separation
High speed rail
High-speed railway bridge
Highway construction
Mechanical properties
Railroads
Railway bridges
Railway construction
Seismic activity
Seismic engineering
Seismic isolation
Seismic response
Shake table tests
Shaking table test
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Summary:•A functional isolation system for high-speed railway bridges is proposed.•The performance-based optimum design for the railway bridge with a new system was carried out.•Shaking table test was performed on a high-speed railway bridge specimen with the new system.•The system is expected to offer a cost effective and safe solution in the design of railway bridges. With the rapid development of high-speed railway bridge construction in seismic areas, it is necessary to investigate the seismic performance of these bridge structures. A new type of seismic isolation system with function separation is presented in this study. By considering an actual high-speed railway bridge as a representative example, the performance parameters of the new type of isolation system were numerically optimized. Based on the results of optimization design, a shaking table test was performed on a reduced scale high-speed railway bridge specimen employing the new isolation system. The comprehensive optimization design and the experimental results demonstrate that the new isolation system can minimize the bending moment of pier while ensuring that the pier’s seismic response in terms of acceleration and displacement is within the allowable range of normal operation of high-speed railway bridges. The proposed new isolation system is expected to offer a cost effective and safe solution in the design of high-speed railway bridges.
ISSN:0141-0296
1873-7323
DOI:10.1016/j.engstruct.2019.109315