Earthquake response of continuous girder bridge for high-speed railway: A shaking table test study

2019 ◽  
Vol 180 ◽  
pp. 249-263 ◽  
Author(s):  
Lizhong Jiang ◽  
Xin Kang ◽  
Changqing Li ◽  
Guangqiang Shao
Keyword(s):  
High Speed ◽  
Shaking Table Test ◽  
Shaking Table ◽  
Earthquake Response ◽  
High Speed Railway ◽  
Test Study ◽  
Continuous Girder Bridge ◽  
Girder Bridge

scholarly journals High-Speed Train-Track-Bridge Dynamic Interaction considering Wheel-Rail Contact Nonlinearity due to Wheel Hollow Wear

2019 ◽  
Vol 2019 ◽  
pp. 1-18 ◽  
Author(s):  
Chao Chang ◽  
Liang Ling ◽  
Zhaoling Han ◽  
Kaiyun Wang ◽  
Wanming Zhai
Keyword(s):  
High Speed ◽  
Synthesis Method ◽  
Dynamic Interaction ◽  
High Speed Train ◽  
Train Track ◽  
High Speed Railway ◽  
Long Span ◽  
Continuous Girder Bridge ◽  
Girder Bridge ◽  
Track Bridge

Wheel hollow wear is a common form of wheel-surface damage in high-speed trains, which is of great concern and a potential threat to the service performance and safety of the high-speed railway system. At the same time, rail corridors in high-speed railways are extensively straightened through the addition of bridges. However, only few studies paid attention to the influence of wheel-profile wear on the train-track-bridge dynamic interaction. This paper reports a study of the high-speed train-track-bridge dynamic interactions under new and hollow worn wheel profiles. A nonlinear rigid-flexible coupled model of a Chinese high-speed train travelling on nonballasted tracks supported by a long-span continuous girder bridge is formulated. This modelling is based on the train-track-bridge interaction theory, the wheel-rail nonelliptical multipoint contact theory, and the modified Craig–Bampton modal synthesis method. The effects of wheel-rail nonlinearity caused by the wheel hollow wear are fully considered. The proposed model is applied to predict the vertical and lateral dynamic responses of the high-speed train-track-bridge system under new and worn wheel profiles, in which a high-speed train passing through a long-span continuous girder bridge at a speed of 350 km/h is considered. The numerical results show that the wheel hollow wear changes the geometric parameters of the wheel-rail contact and then deteriorates the train-track-bridge interactions. The worn wheels can increase the vibration response of the high-speed railway bridges.

Shaking Table Test of a Long-Span Continuous Girder Bridge

2012 ◽  
Vol 446-449 ◽  
pp. 242-246
Author(s):  
Yan Jiang Chen ◽  
Da Xing Zhou ◽  
Wei Ming Yan ◽  
Zhen Yun Tang
Keyword(s):  
Shaking Table Test ◽  
Shaking Table ◽  
Long Span ◽  
Continuous Girder Bridge ◽  
Girder Bridge

Shaking Table Test of a Long-Span Continuous Girder Bridge

2012 ◽  
Vol 446-449 ◽  
pp. 242-246
Author(s):  
Yan Jiang Chen ◽  
Da Xing Zhou ◽  
Wei Ming Yan ◽  
Zhen Yun Tang
Keyword(s):  
Seismic Design ◽  
Shaking Table Test ◽  
Shaking Table ◽  
Technology Study ◽  
Long Span Bridges ◽  
Long Span ◽  
Test Technology ◽  
Continuous Girder Bridge ◽  
Girder Bridge ◽  
Support Excitation

Compared with middle-span bridges, seismic response of long-span bridges is more complicated, and so is seismic design. For example, influence of high order modes is obvious, as well as multi-support excitation, all kinds of nonlinear factors and soil and structure interaction (SSI). It is necessary to study on seismic behavior of a long-span continuous girder bridge. With the help of shake table array and substructure test technology, study on seismic performance of a long-span continuous girder bridge has been done and some useful conclusions have been got.

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

2019 ◽  
Vol 196 ◽  
pp. 109315 ◽  
Author(s):  
Shuang Zou ◽  
Heisha Wenliuhan ◽  
Fulin Zhou
Keyword(s):  
High Speed ◽  
Shaking Table Test ◽  
Shaking Table ◽  
Railway Bridge ◽  
High Speed Railway ◽  
Isolation System

scholarly journals Seismic performance of a continuous bridge with winding rope device activated by a fluid viscous damper

2022 ◽  
pp. 136943322110700
Author(s):  
Wenxue Zhang ◽  
Lijun Su ◽  
Cheng Zhang ◽  
Yongrui Zheng ◽  
Weifeng Yang
Keyword(s):  
Shaking Table Test ◽  
Frictional Resistance ◽  
Shaking Table ◽  
Seismic Load ◽  
Viscous Damper ◽  
Damping Force ◽  
Fluid Viscous Damper ◽  
Bridge Model ◽  
Continuous Girder Bridge ◽  
Girder Bridge

The seismic requirements of piers with fixed bearings (the fixed pier) for continuous girder bridges are relatively high, while the potential seismic capabilities of piers with sliding bearings (the sliding piers) are not fully utilized. To solve this contradiction, a new type of winding rope shock absorption device activated by a fluid viscous damper (WRD-D) was proposed. The WRD-D was installed on the top of the sliding piers, and the both ends of a fluid viscous damper were connected to the superstructure by winding ropes. During an earthquake, the damping force rises with the increase of relative speed between the sliding piers and the superstructure, activating the WRD-D and producing large frictional resistance, subsequently causing the sliding piers and the fixed pier to bear the seismic load cooperatively. In this study, the working mechanism of the WRD-D was researched. The shaking table test of a scaled continuous girder bridge model employing the WRD-D was conducted. The test results reveal that the WRD-D can effectively reduce the seismic requirements of the fixed pier and the superstructure displacements.

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