Experimental evaluation of seismic performance of Coiled Cable Restrainer on bridges isolated by Unbonded laminated rubber bearings

Structures ◽  
2021 ◽  
Vol 34 ◽  
pp. 3376-3390
Author(s):  
Yitong Gu ◽  
Changyong Zhang ◽  
Huaifeng Li ◽  
Han Li ◽  
Xinzhi Dang ◽  
...  
Keyword(s):  
Seismic Performance ◽  
Experimental Evaluation ◽  
Rubber Bearings

SEISMIC CAPACITY OF MEDIUM SIZE CONTINUOUS BRIDGES WITH LEAD-RUBBER BEARINGS

2019 ◽  
Vol 3 (Special Issue on First SACEE'19) ◽  
pp. 199-206
Author(s):  
Bertha Olmos ◽  
José Jara ◽  
José Luis Fabián
Keyword(s):  
Seismic Performance ◽  
Seismic Vulnerability ◽  
Base Isolation ◽  
Elastic Behaviour ◽  
Medium Size ◽  
Nonlinear Behaviour ◽  
Seismic Capacity ◽  
Damage Scenarios ◽  
Isolation Systems ◽  
Rubber Bearings

This paper investigates the effects of the nonlinear behaviour of isolation pads on the seismic capacity of bridges to identify the parameters of base isolation systems that can be used to improve seismic performance of bridges. A parametric study was conducted by designing a set of bridges for three different soil types and varying the number of spans, span lengths, and pier heights. The seismic responses (acceleration, displacement and pier seismic forces) were evaluated for two structural models. The first model corresponded to the bridges supported on elastomeric bearings with linear elastic behaviour and the second model simulated a base isolated bridge that accounts for the nonlinear behaviour of the system. The seismic demand was represented with a group of twelve real accelerograms recorded on the subduction zone on the Pacific Coast of Mexico. The nonlinear responses under different damage scenarios for the bridges included in the presented study were estimated. These results allow determining the seismic capacity of the bridges with and without base isolation. Results show clearly the importance of considering the nonlinear behaviour on the seismic performance of bridges and the influence of base isolation on the seismic vulnerability of medium size bridges.

Experimental evaluation of seismic performance of unbonded prestressed reinforced concrete column

2020 ◽  
Vol 208 ◽  
pp. 109913
Author(s):  
Xiaoxian Liu ◽  
Jianzhong Li ◽  
Hing-Ho Tsang ◽  
Jingfeng Wang ◽  
Jian Zhong
Keyword(s):  
Reinforced Concrete ◽  
Seismic Performance ◽  
Experimental Evaluation ◽  
Concrete Column ◽  
Reinforced Concrete Column

The Effects of the Rubber Bearing on the Seismic Performance of the Aqueduct-Water Coupling Structure

2013 ◽  
Vol 275-277 ◽  
pp. 1370-1373
Author(s):  
Qiu Hua Duan ◽  
Dan Dan Zeng ◽  
Lu Feng Yang
Keyword(s):  
Numerical Analysis ◽  
Temperature Stress ◽  
Seismic Performance ◽  
Water Depth ◽  
Coupling Structure ◽  
Rubber Bearing ◽  
Bridge Structures ◽  
Rubber Bearings ◽  
Water Bridges

Rubber bearings are widely used in bridge structures. The aqueduct structures are water bridges, so rubber bearings are often set at the end of the aqueducts. Rubber bearing cannot solve the problems such as temperature stress and supporting inhomogeneous settlement, but also play role of isolation damping. This paper mainly studies on the effects of the water-depth with changing rubber bearing on the seismic performance of the aqueduct-water coupling structure by numerical analysis.

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