Innovative Seismic Isolation System of Equal Section Multi-span Continuous Beam Bridge with LRB and FVD: Numerical Simulation and Engineering Implementation
Feng Tang, Dejian Li, Yao Lu, Heng Mang, Fei Lv, Cheng Li
Available Online June 2017.
- https://doi.org/10.2991/gcmce-17.2017.39How to use a DOI?
- Equal section multi-span continuous beam bridge; Seismic isolation; Lead-rubber bearings (LRB); Fluid viscous damper (FVD); Nonlinear dynamic time-history analysis
- Lead-rubber bearing (LRB) has small horizontal resistance under creep loads, and its post-yield stiffness reduces quickly under seismic excitations, while the hysteretic behavior of lead core dissipates the seismic energy; Fluid viscous damper (FVD), which is a speed-related energy dissipation device, could provide strong resilience and excellent position-limiting capability. Both devices above are widely used in seismic mitigation and isolation at present. In this paper, three analytical models based on a highway multi-span continuous beam bridge under E2 earthquake were established, two of which adopt LRB and FVD respectively and the other one use both devices. Longitudinal and transverse seismic response were obtained by use of time-history dynamic analysis. The result indicates that LRB can improve performance of bridge transverse dynamic response under earthquake motion but fail to reduce longitudinal seismic response and FVD has capability of diminishing longitudinal seismic response. According to the comparison of behavior of three analytical models under E2 earthquake, the combined use of LRB and FVD is an effective way of seismic design of equal section multi-span continuous bridge.
- Open Access
- This is an open access article distributed under the CC BY-NC license.
Cite this article
TY - CONF AU - Feng Tang AU - Dejian Li AU - Yao Lu AU - Heng Mang AU - Fei Lv AU - Cheng Li PY - 2017/06 DA - 2017/06 TI - Innovative Seismic Isolation System of Equal Section Multi-span Continuous Beam Bridge with LRB and FVD: Numerical Simulation and Engineering Implementation BT - 2017 Global Conference on Mechanics and Civil Engineering (GCMCE 2017) PB - Atlantis Press SP - 206 EP - 218 SN - 2352-5401 UR - https://doi.org/10.2991/gcmce-17.2017.39 DO - https://doi.org/10.2991/gcmce-17.2017.39 ID - Tang2017/06 ER -