Shake Table Test of Long Span Cable-Stayed Bridge Subjected to Near-Fault Ground Motions Considering Velocity Pulse Effect and Non-Uniform Excitation
Source abstract
Abstract
This paper presents the results of shake table tests of a scaled long span cable-stayed bridge (CSB). The design principles of the scaled CSB are first introduced. The first six in-plane modes are then identified by the stochastic subspace identification (SSI) method. Furthermore, shake table tests of the CSB subjected to the non-pulse near-field (NNF) and velocity-pulse near-fault (PNF) ground motions are carried out. The tests indicated that: (1) the responses under longitudinal uniform excitation are mainly contributed by antisymmetric modes; (2) the maximum displacement of the tower occurs on the tower top node, the maximum acceleration response of the tower occurs on the middle cross beam, and the maximum bending moment of the tower occurs on the bottom section; (3) the deformation of the tower and girder subjected to uniform excitation is not always larger than that subjected to non-uniform excitation, and therefore the non-uniform case should be considered in the seismic design of CSBs.
Source: crossref · Quality: baseline
Research context
OpenAlex topics: Seismic Performance and Analysis · Structural Engineering and Vibration Analysis · Structural Response to Dynamic Loads
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
Affiliations
College of Civil Engineering, Fuzhou University, Fuzhou 350108, China
Key Laboratory of Urban Security & Disaster Engineering of MOE, Beijing University of Technology, Beijing 100124, China
School of Civil Engineering, Southwest Jiaotong University, Chengdu 610031, China
Funding
the Postdoctoral Science Foundation of China · Postdoctoral Science Foundation of Beijing · the Natural Science Foundation of Fujian Province · National Science Foundation of China
References (25)
Show source-provided references
1. Seismic design of high-rise towers for cable-stayed bridges under strong earthquakes10.1007/s11709-011-0127-5 ↗
2. Passive hybrid systems for earthquake protection of cable-stayed bridge10.1016/j.engstruct.2006.03.034 ↗
3. Effect of near-fault earthquake on bridges: Lessons learned from Chi-Chi earthquake10.1007/s11803-002-0011-3 ↗
4. Seismic design strategy of cable stayed bridges subjected to strong ground motion10.12989/sem.2014.51.6.909 ↗
5. Effect of Seismic-Induced bearing uplift of a Cable-Stayed bridge10.1061/(ASCE)BE.1943-5592.0001342 ↗
6. Research on the shaking table test of three towers cable-stayed bridge based on three shaking table system
7. Shake table test of floating cable-stayed bridge under earthquake excitation during construction with balanced cantilever method
8. Xu, L., Zhang, H., Gao, J., and Zhang, C. (2018). Longitudinal seismic responses of a cable-stayed bridge based on shaking table tests of a half-bridge scale model. Adv. Struct. Eng., 1–13.10.1177/1369433218778662 ↗
9. Experimental and numerical verification on effects of inelastic tower links on transverse seismic response of tower of bridge full model10.1016/j.engstruct.2018.12.046 ↗
10. Dynamic response of long-span bridges subjected to nonuniform excitation: A state-of-the-art review10.1051/matecconf/201925805017 ↗
11. Spatial variation of seismic ground motion effects on nonlinear responses of cable stayed bridges considering different soil types10.1016/j.soildyn.2019.01.002 ↗
12. Seismic responses of super-span cable-stayed bridges induced by ground motions in different sites relative to fault rupture considering soil-structure interaction10.1016/j.soildyn.2017.07.016 ↗
13. Seismic response of pile groups supporting long-span cable-stayed bridge subjected to multi-support excitations10.1016/j.soildyn.2017.07.019 ↗
14. Assessment on required separation length between adjacent bridge segments to avoid pounding10.1016/j.soildyn.2019.01.031 ↗
15. Critical earthquake response of elastic-plastic structures under Near-Fault ground motions (Part 2: Forward-Directivity input)
16. Simple method to estimate residual displacement in concrete bridge columns under near-fault earthquake motions10.1016/j.engstruct.2018.08.083 ↗
17. Comparison of near-fault and far-fault ground motion effects on geometrically nonlinear earthquake behavior of suspension bridges10.1007/s11069-012-0259-5 ↗
18. Influence analysis of motion characteristics of near-fault ground motions on seismic responses of long-period structures
19. Effectiveness evaluation and optimal design of nonlinear viscous dampers for inelastic structures under pulse-type ground motions10.1002/eqe.3109 ↗
20. Shake table test on transverse steel damper seismic system for long span cable-stayed bridges10.1016/j.engstruct.2018.10.073 ↗
21. A time-domain seismic SSI analysis method for inelastic bridge structures through the use of a frequency-dependent lumped parameter model10.1002/eqe.2573 ↗
22. An efficient algorithm to identify Strong-Velocity pulses in multicomponent ground motions10.1785/0120130191 ↗
23. Ancheta, T., Darragh, R., Stewart, J., Silva, W.J., Chiou, B.S.J., Wooddell, K.E., Graves, R.W., Kottke, A.R., Boore, D.M., and Kishida, T. (2013). PEER NGA-West2 Database, Pacific Earthquake Engineering Research Center. Technical Report 2013/03.10.1193/070913EQS197M ↗
24. Static and seismic studies on steel/concrete hybrid towers for multi-span cable-stayed bridges10.1016/j.jcsr.2010.08.008 ↗
25. A case study on the application of passive control and seismic isolation techniques to cable-stayed bridges: A comparative investigation through non-linear dynamic analyses10.1016/j.engstruct.2015.04.048 ↗