Seismic Response Analysis of Cable-Stayed Bridge Considering the Interaction of the Soil-Pile-Superstructure

To study the nonlinear seismic behavior and seismic resistance of the long-span cable-stayed bridges subjected to earthquakes, the multidimensional and multisupported artificial ground motions are synthesized first based on the in situ site conditions of the bridge considering the coherent and traveling wave effects. Then, considering the material nonlinearity of the cable-stayed bridge, a 3D finite element model is established based on the OpenSees platform, and the nonlinear seismic response analysis of the bridge is carried out under the synthetic artificial ground motions. The nonlinear seismic response of main bridge components such as piers, towers, bearings, and cables is analyzed, and key conclusions and observations are drawn.

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Seismic Response Analysis of Cable-Stayed Bridge Tower which Does Not Consider the Pile-Soil Interaction (I)

Advanced Materials Research ◽

10.4028/www.scientific.net/amr.461.593 ◽

2012 ◽

Vol 461 ◽

pp. 593-596

Author(s):

Li Na Zhang ◽

Feng Chen Li ◽

Jian Feng Wu ◽

Wei Bing Luo

Keyword(s):

Seismic Response ◽

Response Analysis ◽

Seismic Action ◽

Seismic Response Analysis ◽

Displacement Response ◽

Finite Element Software ◽

Cable Stayed Bridge ◽

Tower Structure ◽

Different Characteristics ◽

Bridge Tower

For the problem of analysis of earthquake response of cable-stayed tower bridge, the foundation is given as the rigid consolidation, do not consider the interaction of soil and structure, the finite element software ABAQUS is used for seismic response analysis. Taking the TCU052 and EI Centro wave which have different characteristics as the input of bridge tower, first to carry out the modal analysis of bridge tower structure, get various order of modal frequency of the bridge tower, then analyses the displacement response of the top of bridge tower in the bridge direction, the results showed that, under the pulse type seismic action the displacement response of bridge tower of large span cable-stayed bridge are increased.

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Seismic Response Analysis of Cable-Stayed Bridge Tower which Does Not Consider the Pile-Soil Interaction (II)

Advanced Materials Research ◽

10.4028/www.scientific.net/amr.461.611 ◽

2012 ◽

Vol 461 ◽

pp. 611-614

Author(s):

Li Na Zhang ◽

Feng Chen Li ◽

Ou Yang ◽

Cai Hua Wang ◽

Jin Wang

Keyword(s):

Seismic Response ◽

Response Analysis ◽

Seismic Action ◽

Seismic Response Analysis ◽

Displacement Response ◽

Finite Element Software ◽

Cable Stayed Bridge ◽

Tower Structure ◽

Different Characteristics ◽

Bridge Tower

For the problem of analysis of earthquake response of cable-stayed tower bridge, the foundation is given as the rigid consolidation, do not consider the interaction of soil and structure, the finite element software ABAQUS is used for seismic response analysis. Taking the TCU052 and EI Centro wave which have different characteristics as the input of bridge tower, first to carry out the modal analysis of bridge tower structure, get various order of modal frequency of the bridge tower, then analyses the displacement response of the top of bridge tower in the bridge direction, the results showed that, under the pulse type seismic action the displacement response of bridge tower of large span cable-stayed bridge are increased.

Download Full-text