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A platform for research: civil engineering, architecture and urbanism
Superelastic CuAlBe wire-based sliding lead rubber bearings for seismic isolation of bridges in cold regions
Highlights A novel CuAlBe-SLRB is proposed for seismic protection of continuous bridges in cold regions. The numerical model of CuAlBe-SLRB is developed and verified using the experimental results of sliding-LRB and CuAlBe wire. A numerical searching method is suggested to achieve the optimal parameters of CuAlBe-SLRB. Effectiveness of CuAlBe-SLRB for response mitigation of bridges against low temperature is discussed and assessed.
Abstract To enhance the re-centering capability of sliding-lead rubber bearing (sliding-LRB) comprising the sliding device and LRB in series and overcome the degradation of the widely used Nitinol (NiTi) wires at low temperatures, a novel copper aluminum beryllium wire-based sliding lead rubber bearing (CuAlBe-SLRB) is proposed for seismic protection of bridges in cold regions. The re-centering performance is achieved by adding the superelastic CuAlBe wires into the sliding-LRB. The numerical model is developed and verified using the experimental results of the sliding-LRB and CuAlBe wire, respectively. A numerical searching method is suggested to design the optimal parameters of CuAlBe-SLRB system. Nonlinear dynamic analyses are conducted to investigate the seismic response of bridges with CuAlBe-SLRBs for varying isolation periods. The responses of the bridges with CuAlBe-SLRBs and sliding-LRBs are compared. Results reveal that the CuAlBe-SLRB system is more effective to enhance the bridge performance than the sliding-LRB system against earthquakes and dependable restorability can be achieved in cold regions.
Superelastic CuAlBe wire-based sliding lead rubber bearings for seismic isolation of bridges in cold regions
Highlights A novel CuAlBe-SLRB is proposed for seismic protection of continuous bridges in cold regions. The numerical model of CuAlBe-SLRB is developed and verified using the experimental results of sliding-LRB and CuAlBe wire. A numerical searching method is suggested to achieve the optimal parameters of CuAlBe-SLRB. Effectiveness of CuAlBe-SLRB for response mitigation of bridges against low temperature is discussed and assessed.
Abstract To enhance the re-centering capability of sliding-lead rubber bearing (sliding-LRB) comprising the sliding device and LRB in series and overcome the degradation of the widely used Nitinol (NiTi) wires at low temperatures, a novel copper aluminum beryllium wire-based sliding lead rubber bearing (CuAlBe-SLRB) is proposed for seismic protection of bridges in cold regions. The re-centering performance is achieved by adding the superelastic CuAlBe wires into the sliding-LRB. The numerical model is developed and verified using the experimental results of the sliding-LRB and CuAlBe wire, respectively. A numerical searching method is suggested to design the optimal parameters of CuAlBe-SLRB system. Nonlinear dynamic analyses are conducted to investigate the seismic response of bridges with CuAlBe-SLRBs for varying isolation periods. The responses of the bridges with CuAlBe-SLRBs and sliding-LRBs are compared. Results reveal that the CuAlBe-SLRB system is more effective to enhance the bridge performance than the sliding-LRB system against earthquakes and dependable restorability can be achieved in cold regions.
Superelastic CuAlBe wire-based sliding lead rubber bearings for seismic isolation of bridges in cold regions
Zheng, Wenzhi (author) / Wang, Hao (author) / Hao, Hong (author) / Bi, Kaiming (author)
Engineering Structures ; 247
2021-01-01
Article (Journal)
Electronic Resource
English
Superelastic behavior and damping capacity of CuAlBe alloys
| British Library Online Contents | 2006