The Length Optimization of Non-Stayed Cable Segment to Low-Pylon Cable-Stayed Bridge

2013 ◽  
Vol 274 ◽  
pp. 490-495 ◽  
Author(s):  
Hong Tao Bi ◽  
Liang Wu
Keyword(s):  
Finite Element Method ◽  
Finite Element ◽  
Design Theory ◽  
Internal Force ◽  
Cable Stayed Bridge ◽  
Cable Force ◽  
Length Optimization ◽  
Cable Segment ◽  
Element Method

In this paper, combined with the background engineering, according to the cable-stayed bridge's design theory, through the adjustment of cable force to change the structure's internal force by using the big general finite element method software which is named Midas/Civil, and then analyzed the related parameters affecting to structural internal force and distortion, which obtained the reasonable length of non-stayed cable segment to this kind of bridge.

Research on Seismic Displacement Response of Cable Stayed Bridge without Back Stays

2014 ◽  
Vol 919-921 ◽  
pp. 1039-1042
Author(s):  
Liang Lv ◽  
Bin Liang ◽  
Wen Sheng Wang
Keyword(s):  
Finite Element Method ◽  
Finite Element ◽  
Seismic Wave ◽  
Natural Vibration ◽  
Peak Displacement ◽  
Seismic Displacement ◽  
Displacement Response ◽  
Cable Stayed Bridge ◽  
Element Method ◽  
Design And Construction

Seismic displacement response of cable stayed bridge without back stays was studied in this paper. Based on the cable stayed bridge without back stays on Zhenshui Road in Xinmi City, finite element method (FEM) was applied to calculate and analyze natural vibration and peak displacement response of the structure. The results show that with regard to mid-span and consolidation of pier and main tower, uniaxial seismic wave input results in peak displacement response of corresponding direction is bigger than that of any other direction. Peak displacement response of the top of the main tower is bigger than those of mid-span and consolidation of pier and main tower in any seismic wave input cases, which indicates that the top of the tower needs to be focused in the process of design and construction. Seismic wave along triaxial direction has the biggest impact on the structure. Keywords: cable stayed bridge without back stays; seismic displacement response; seismic wave input; peak displacement response

Application of CAD and Finite Element Method in the Gravity Center Analysis of Body Rotating Cable-Stayed Bridge

2011 ◽  
Vol 243-249 ◽  
pp. 1549-1552
Author(s):  
Shi Jie Wang ◽  
Xun Zhu
Keyword(s):  
Finite Element Method ◽  
Finite Element ◽  
Rotation Axis ◽  
Center Of Gravity ◽  
Accurate Calculation ◽  
Gravity Center ◽  
The Past ◽  
Cable Stayed Bridge ◽  
Rotation System ◽  
Element Method

Body rotating bridges are mostly rotation system in balance, whose gravity center are basically located in the rotation axis of turntable. In order to ensure bridges’ swivel construction successfully accomplished, the structural center of gravity should be made clear before the rotation. In the past, the structural center of gravity was usually ascertained in the method of mathematics, but the tedious calculation couldn’t get results with enough accuracy. In this paper, structural gravity center of cable-stayed bridge is calculated in the method of CAD and finite element, whose process and result are proved handy and accurate calculation. Taking Sui Fenhe cable-stayed bridge as an example, its theoretical eccentricity is 1.3cm.

Internal Force and Deformation Analysis of Pile-Brace Support Structure of Foundation Pit Considering Deformation Compatibility

2011 ◽  
Vol 90-93 ◽  
pp. 446-452
Author(s):  
Chang Jie Xu ◽  
Zhi Yuan Luo
Keyword(s):  
Finite Element Method ◽  
Finite Element ◽  
Internal Force ◽  
Deformation Analysis ◽  
Support Structure ◽  
Foundation Pit ◽  
Simplified Calculation ◽  
Deformation Compatibility ◽  
Horizontal Displacements ◽  
Element Method

For the current simplified calculation of pile-brace support structure can not calculate the displacements of pile and brace, the authors try to start from the deflection differential equation of beam on elastic foundation, considering the deformation compatibility of pile and brace, and obtains the internal forces and displacements of pile by using Finite Difference Method. Meanwhile, Finite Element Method is used to analyze and calculate the horizontal displacements of pile. The results show that the values obtained by this article are closer to the measured values than that obtained by Finite Element Method. The method is accurate, reliable and simple. Besides, this author also analysis the different horizontal displacements of pile under different parameter conditions of support structure, which can provide some valuable suggestions for the design of foundation pit.

scholarly journals Dynamic Response Study of a Single Tower Cable Stayed Bridge using Finite Element Method

2020 ◽  
Vol 10 (2) ◽  
pp. 85
Author(s):  
Muhammad Habib ◽  
Naik Muhammad ◽  
Saeedullah Jan Mandokhail ◽  
Zafar Baloch ◽  
Muhammad Irfan ◽  
...  
Keyword(s):  
Finite Element Method ◽  
Finite Element ◽  
Dynamic Response ◽  
Cable Stayed Bridge ◽  
Element Method

Mixed Method to Calculate the Sluice Plate on Complicated Foundation

2011 ◽  
Vol 138-139 ◽  
pp. 399-403
Author(s):  
Chun Liang Dong ◽  
Xiao Yu Lu
Keyword(s):  
Finite Element Method ◽  
Finite Element ◽  
Interaction Effect ◽  
Mixed Method ◽  
Analytical Method ◽  
Internal Force ◽  
The Finite Element Method ◽  
Principle Of Superposition ◽  
Element Method

In order to calculate the interaction between complicated foundation and sluice plate conveniently, an effective method was proposed to solve this problem in the paper. This method regarded the sluice plate and foundation as two substructures, which are connected with chain-bars. The unit displacement of the sluice plate and the settlement of the foundation surface are calculated by the analytical method and the finite element method, respectively. And the counter-force of the foundation is calculated by the mixed method. At the same time, the displacement and internal force are calculated by the principle of superposition. All the results reflect the interaction effect between the sluice plate and foundation fairly good.

The Length Optimization of Non-Stayed Cable Segment to Low-Pylon Cable-Stayed Bridge

2013 ◽  
Vol 540 ◽  
pp. 131-139 ◽  
Author(s):  
Hong Tao Bi ◽  
Yan Li
Keyword(s):  
Structural Analysis ◽  
Optimization Model ◽  
Internal Force ◽  
Segment Length ◽  
Optimization Analysis ◽  
Cable Stayed Bridge ◽  
Proposed Model ◽  
Length Optimization ◽  
Cable Stayed Bridges ◽  
Cable Segment

An optimization model was proposed in order to investigate the effect of the non-stayed cable segment length on the performance of a low-pylon cable-stayed bridge. Based on the structural analysis of the cable-stayed bridges, the proposed model aims to adjust the structural internal force by changing the non-stayed cable segment length. The most reasonable length of non-stayed cable segment was obtained by the optimization analysis.

Fitting Analysis of Soil Strength Parameter Based on the Finite Element Method

2012 ◽  
Vol 204-208 ◽  
pp. 382-388
Author(s):  
Bin Yang ◽  
Li Ying Wang
Keyword(s):  
Finite Element Method ◽  
Finite Element ◽  
Three Dimensional ◽  
Element Model ◽  
Internal Force ◽  
Soil Strength ◽  
Structure Design ◽  
Strength Parameter ◽  
Navigation Lock ◽  
Element Method

Abstract: This paper takes the project of the navigation lock in Jialing River as an example to study the lock head structure design layout, and build up a three-dimensional finite element model and carry on the nonlinear numerical calculations by using large finite software ABAQUS, and calculating the structural internal force of the lock head by the 3D nonlinear finite element method. This paper utilizes the numerical analysis method to analyze soil strength parameters. Combining with the FEM calculation data, the data-fit between the influencing factors and the side piers’ stress and displacement was found. This provides new thoughts to analyze the influence of multivariate interaction on the lock head structure.

Coupled Vibration Analysis of Vehicle-Bridge System for Yujiang River Bridge on Nanning-Guangzhou Railway Line

2011 ◽  
Vol 255-260 ◽  
pp. 1790-1794
Author(s):  
De Shan Shan ◽  
Shen Gai Cui
Keyword(s):  
Finite Element Method ◽  
Finite Element ◽  
System Dynamics ◽  
Vibration Analysis ◽  
Coupled Vibration ◽  
Railway Line ◽  
Cable Stayed Bridge ◽  
Set Up ◽  
Bridge System ◽  
Element Method

Taking Yujiang River Bridge on Nanning-Guangzhou railway line as study background, the refined numerical simulation model of whole vehicle and whole bridge system for coupled vibration analysis is set up. The dynamic analysis model of the cable-stayed bridge is established by finite element method, and the natural vibration properties of the bridge are analyzed. The German ICE Electric Multiple Unit (EMU) train refined three-dimensional space vehicle model is set up by multi-system dynamics software SIMPACK, and the multiple non-linear properties are considered. The space vibration responses are calculated by co-simulation based on multi-body system dynamics and finite element method when the ICE EMU train passes the long span cable-stayed bridge at different speeds. In order to test if the bridge has the sufficient lateral or vertical rigidity and the operation stability is fine. The calculation results show: The operation safety can be guaranteed, and comfort index is “excellent”. The bridge has sufficient rigidity, and vibration is in good condition.

Finite Element Method for Solving Bucking Load of Semi-Rigid Steel Frame

2013 ◽  
Vol 834-836 ◽  
pp. 1337-1342
Author(s):  
Hua Hu Cheng ◽  
Ai Min Li ◽  
Ming Wen Guan ◽  
Xian Wei Yang ◽  
Jing Luo
Keyword(s):  
Finite Element Method ◽  
Finite Element ◽  
Stiffness Matrix ◽  
Internal Force ◽  
Steel Frame ◽  
Buckling Load ◽  
Stability Characteristic ◽  
The Stability ◽  
Global Stiffness Matrix ◽  
Element Method

Took two layers of single span lateral sway semi-rigid connecting steel frame to bear vertical load function as the research object, adopting finite element method for solving the bucking load of the whole losing the stability of the semi-rigid connecting steel frame. Using based on the energy method and the three parabolic interpolation deflection curve function to obtain the relationship between the both element ends of internal force and displacement and introducing semi-rigid beam element stiffness matrix and geometric stiffness matrix of element integrate the global stiffness matrix which contains the flexibility of the connections and the component geometry nonlinear, thus deducing the stability characteristic equation of semi-rigid steel frame. And the MATLAB language composition program is applied to calculate the buckling load of overall losing stability of the semi-rigid steel frame, thus obtaining the buckling load of semi-rigid steel frame. The method is a very effective numerical calculating method which can solve the stability problems of relatively complicated stress conditions or relatively complicated structure composition conditions and it can also satisfy the requirement of higher calculation accuracy, easy for programming and calculation and of great practicability.

A Comparison between the Matrix Displacement Method and the Finite Element Method in Solving Frame Structure with SM Solver Software

2014 ◽  
Vol 580-583 ◽  
pp. 3042-3045
Author(s):  
Li Juan Cheng ◽  
Xin Chi Yan
Keyword(s):  
Finite Element Method ◽  
Exact Solution ◽  
Finite Element ◽  
Internal Force ◽  
Frame Structure ◽  
The Finite Element Method ◽  
Displacement Method ◽  
Rigid Frame ◽  
The Matrix ◽  
Element Method

Using matrix displacement method and the finite element method to calculate the internal force of the same frame, and then comparing the results. Meanwhile, due to the theory that SM Solver can calculate the exact solution of rigid frame structure forces, we use it to support our experiment. Finally, we succeed in calculating and proving that Matrix displacement method and the finite element method have the same result in solving the rigid frame structure forces.

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