Stochastic Response of a Coastal Cable-Stayed Bridge Subjected to Multi-Dimensional and Multi-Supported Earthquake and Waves

2020 ◽  
pp. 2150006
Author(s):  
SIBO MENG ◽  
YANG DING
Keyword(s):  
Seismic Response ◽  
Water Structure ◽  
Stochastic Dynamic ◽  
Stochastic Response ◽  
Structure Interaction ◽  
Cable Stayed Bridge ◽  
Stochastic Seismic Response ◽  
Influence Of Water ◽  
Underwater Structure ◽  
Cable Stayed Bridges

In this paper, a stochastic dynamic analysis method for cable-stayed bridges subjected to multi-dimensional and multi-supported earthquake and waves is established based on the pseudo-excitation method. The Monte Carlo method is used to analyze the influence of excitation nonlinearity on the bridge structure response, and the applicability of this method is verified. Stochastic response characteristic of coastal cable-stayed bridges subjected to multi-dimensional and multi-supported earthquake and waves is studied. The influence of water–structure interaction on the stochastic seismic response of main components of the cable-stayed bridge is described, and the influence of key parameters is analyzed. The results show that the influence of excitation nonlinearity on the response of the cable-stayed bridge can be neglected. A greater energy input caused by the rigid additional mass of the hydrodynamic pressure is the reason for the increasing of the seismic response. The influence of stochastic response of the underwater structure of the tower is changed with the site conditions. For the ground motion acceleration input energy being distributed in the high-frequency domain, the water–structure interaction has a greater effect on stochastic seismic response of the underwater structure of the tower. The influence of water–structure interaction on the stochastic seismic response of the underwater structure of the cable-stayed bridge increases with the increasing of the wave height and water depth.

Effect of Pile-Soil-Structure Interaction on the Cable-Stayed Bridge in Response to the Earthquake

2014 ◽  
Vol 539 ◽  
pp. 731-735 ◽  
Author(s):  
Yu Chen
Keyword(s):  
Finite Element ◽  
Seismic Response ◽  
Soil Structure ◽  
Response Spectrum ◽  
Three Dimensional ◽  
Soil Structure Interaction ◽  
Structure Interaction ◽  
Finite Element Software ◽  
Cable Stayed Bridge ◽  
Three Dimensional Finite Element

In this thesis, based on the design of a 140+90m span unusual single tower and single cable plane cable-stayed bridge, free vibration characteristics and seismic response are investigated; three dimensional finite element models of a single tower cable-stayed bridge with and without the pile-soil-structure interaction are established respectively by utilizing finite element software MIDAS/CIVIL, seismic response of Response spectrum and Earthquake schedule are analyzed respectively and compared. By the comparison of the data analysis, for small stiffness span cable-stayed bridge, the pile-soil-structure interaction can not be ignored with calculation and analysis of seismic response.

STOCHASTIC SEISMIC RESPONSE OF BASE-ISOLATED BUILDINGS

2013 ◽  
Vol 05 (01) ◽  
pp. 1350006 ◽  
Author(s):  
C. JACOB ◽  
K. SEPAHVAND ◽  
V. A. MATSAGAR ◽  
S. MARBURG
Keyword(s):  
Seismic Response ◽  
Ground Motion ◽  
Probability Distributions ◽  
Ground Motions ◽  
Earthquake Ground Motion ◽  
Response Analysis ◽  
Motion Model ◽  
Stochastic Response ◽  
Ground Motion Model ◽  
Stochastic Seismic Response

The stochastic response of base-isolated building considering the uncertainty in the characteristics of the earthquakes is investigated. For this purpose, a probabilistic ground motion model, for generating artificial earthquakes is developed. The model is based upon a stochastic ground motion model which has separable amplitude and spectral non-stationarities. An extensive database of recorded earthquake ground motions is created. The set of parameters required by the stochastic ground motion model to depict a particular ground motion is evaluated for all the ground motions in the database. Probability distributions are created for all the parameters. Using Monte Carlo (MC) simulations, the set of parameters required by the stochastic ground motion model to simulate ground motions is obtained from the distributions and ground motions. Further, the bilinear model of the isolator described by its characteristic strength, post-yield stiffness and yield displacement is used, and the stochastic response is determined by using an ensemble of generated earthquakes. A parametric study is conducted for the various characteristics of the isolator. This study presents an approach for stochastic seismic response analysis of base-isolated building considering the uncertainty involved in the earthquake ground motion.

Analyzing the Influence of Pile - Soil - Structure Interaction on Seismic Response of Cable-Stayed Bridge Tower

2010 ◽  
Vol 168-170 ◽  
pp. 2580-2589 ◽  
Author(s):  
Shi Zhu Tian ◽  
Chang Ming Zhang ◽  
Wei Bing Luo
Keyword(s):  
Seismic Response ◽  
Soil Structure ◽  
Soil Structure Interaction ◽  
Structure Interaction ◽  
Cable Stayed Bridge ◽  
Long Span ◽  
Non Linear ◽  
Tower Model ◽  
Bridge Tower

This paper instancing of Harbin Sifangtai Cable-Stayed Bridge, simulates two kinds of non-linear bridge tower model considering the pile - soil - structure interaction and not considering using ABAQUS6.8 software. By comparing the frequency, modal, displacement of the tower top, acceleration of the bridge tower and stress of the tower bottom under two circumstances, analyzing and obtaining the conclusion that the seismic response results will be very different to a long-span Cable-Stayed Bridge, whether considering the pile - soil - structure interaction or not.

Dynamic Characteristic Analysis Considering of Pile-Soil-Superstructure Interaction Based on Long-Span Cable-Stayed Bridge

2012 ◽  
Vol 178-181 ◽  
pp. 2497-2500
Author(s):  
Jing Cao
Keyword(s):  
Dynamic Characteristic ◽  
Seismic Response ◽  
Characteristic Analysis ◽  
Lumped Mass ◽  
Structure Interaction ◽  
Cable Stayed Bridge ◽  
Long Span ◽  
Software Model ◽  
Lumped Mass Method ◽  
Structural Calculation

This article sets up two structural calculation models utilizing lumped mass method, and using MIDAS software: model A and model B. It proves that considering soil-pile-structure interaction has extremely vital significance in seismic response design of long-span cable-stayed bridge.

Study of Influences of Soil-Structure Interaction on Seismic Response of Extradosed Cable-Stayed Bridge

2013 ◽  
Vol 353-356 ◽  
pp. 1941-1945
Author(s):  
Guo Jing He ◽  
Hai Tao Zhang ◽  
Jie Lu
Keyword(s):  
Seismic Response ◽  
Torsional Vibration ◽  
Soil Structure ◽  
Yunnan Province ◽  
Vibration Mode ◽  
Response Spectrum ◽  
Paper Analysis ◽  
Soil Structure Interaction ◽  
Structure Interaction ◽  
Cable Stayed Bridge

Taking the Sifang Bridge in Yunnan Province in China as an example, this paper analysis the influences of soil-structure interaction on seismic response of extradosed cable-stayed bridge with response spectrum method. The results show that extradosed cable-stayed bridge has a shorter nature period than cable-stayed bridge, and torsional vibration mode does not happen in the first few modes as the beam has a bigger stiffness. The displacement of the structure will be underestimated if the soil-structure interaction is ignored while the design of some parts is conservative.

Pylons of cable-stayed bridges: a comparison

1988 ◽  
Vol 15 (4) ◽  
pp. 516-523 ◽  
Author(s):  
Fakhry Aboul-Ella
Keyword(s):  
Key Words ◽  
Static Analysis ◽  
Analytical Model ◽  
Soil Structure ◽  
Soil Mechanics ◽  
Soil Structure Interaction ◽  
Structure Interaction ◽  
Cable Stayed Bridge ◽  
Fixed Base ◽  
Cable Stayed Bridges

A new analytical model for the static analysis of cable-stayed bridges is presented taking into consideration the effect of soil–structure interaction. Bridges having pylons and piers of different degrees of restraint, such as fixed or hinged base pylons, fixed base piers, and pile-supported piers, are analyzed and compared to investigate the effect of these restraints on the response of the entire cable-stayed bridge system. The validity of the assumption of fixed support for pylons or piers is also examined. Key words: bridges, cables, foundation, towers, pylons, piers, piles, caissons, soil mechanics.

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