Analysis and Comparison on Dynamic Characteristics of CFST Arch Bridge

This paper studies the dynamic response and the impact factor of the concrete-filled steel tubular (CFST) arch bridge named Hejiang River Bridge under the moving vehicles. Research shows that the impact factor of CFST arch bridge at the vault and 1/4 arch rib is greatly influenced by the road surface roughness (RSR), and it is increased with the grade of RSR increases, meanwhile it is different at apiece section position of the arch bridge. The impact factor doesn't vary monotonically with the speed of vehicle, it appears the maximum when the speed of vehicle is between 20-25 km/h and 35-50 km/h, and the impact factors of different cross-sections are not just the same with the changing regularity of speed. Therefore, the dynamic characteristics of different structural components should be calculated in designing CFST arch bridge for discrepant dynamic characteristics of various constructional elements.

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Seismic Response Analysis of CFST Arch Bridge Considering Input Earthquake Characteristics

Advanced Materials Research ◽

10.4028/www.scientific.net/amr.255-260.962 ◽

2011 ◽

Vol 255-260 ◽

pp. 962-966

Author(s):

Fan Xing ◽

Lin Zhao ◽

Ya Zhe Xing

Keyword(s):

Seismic Response ◽

Research Result ◽

Steel Tube ◽

Response Analysis ◽

Vibration Period ◽

Arch Bridge ◽

Near Fault ◽

Long Span ◽

Cfst Arch Bridge ◽

Out Of Plane

In view of huge destructibility of the near-fault ground motions, structures with long natural vibration period are liable to fall into nonlinear reaction stage. Based on a full understanding of the near-fault seismic spectrum characteristics, the out-of-plane seismic response of a long span concrete-filled steel tube (CFST) arch bridge was studied in depth, and the research result could offer a reference for near-fault aseismic design.

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Stochastic seismic analysis of a concrete-filled steel tubular (CFST) arch bridge under tridirectional multiple excitations

Engineering Structures ◽

10.1016/j.engstruct.2013.01.031 ◽

2013 ◽

Vol 52 ◽

pp. 355-371 ◽

Cited By ~ 23

Author(s):

De-Yi Zhang ◽

Xi Li ◽

Wei-Ming Yan ◽

Wei-Chau Xie ◽

Mahesh D. Pandey

Keyword(s):

Seismic Analysis ◽

Arch Bridge ◽

Cfst Arch Bridge

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The Dynamic Characteristics of Rigid Frame Single-Rib Arch Bridge

Applied Mechanics and Materials ◽

10.4028/www.scientific.net/amm.368-370.1426 ◽

2013 ◽

Vol 368-370 ◽

pp. 1426-1430

Author(s):

Li Xiong Gu ◽

Rong Hui Wang

Keyword(s):

Dynamic Characteristics ◽

Bending Strength ◽

Dynamic Properties ◽

Structural Parameters ◽

Bending Stiffness ◽

Torsional Stiffness ◽

Lateral Stiffness ◽

Arch Bridge ◽

Vertical Stiffness ◽

Rigid Frame

In this paper, by establishing the finite element model to study the dynamic characteristics of rigid frame single-rib arch bridge. By respectively changing structural parameters of the span ratios, and the compressive stiffness of arch, and the bending stiffness of arch, and the bending stiffness of bridge girder, and the layout of boom to find out the regularity of the structure on lateral stiffness, and vertical stiffness, and torsional stiffness as well as dynamic properties, it come out the results of that lateral stiffness of the structure is weaker, and increasing the span ratios and the compressive strength of arch are conducive to the improvement of the overall stiffness, and improving the bending strength of arch and layout of boom are less effect on the overall stiffness and mode shape.

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Study on Structure Sensitivity Analysis Using ANSYS PDS

Advanced Materials Research ◽

10.4028/www.scientific.net/amr.243-249.1830 ◽

2011 ◽

Vol 243-249 ◽

pp. 1830-1834

Author(s):

Ke Ke Peng

Keyword(s):

Sensitivity Analysis ◽

Structure Sensitivity ◽

Design System ◽

Complex Structures ◽

Probabilistic Design ◽

Sensitivity Matrix ◽

Arch Bridge ◽

Cfst Arch Bridge ◽

Sensitive Factor ◽

Incremental Form

As to sensitivity analysis, based on traditional sensitive factor definition and concept of reliability vector, two kinds of sensitivity problems are putted forward in this paper. And factor sensitivity matrix is defined. As far as large and complex structures are concerned, factor sensitivity matrix of incremental form is given. Furthermore, sensitivity surface is putted forward. ANSYS PDS（ANSYS Probabilistic Design System）can solve the above two kinds of sensitivity problems efficiently. The example bridge is a CFST arch bridge with 83.6 meter-span, which operated for 10 years. The analysis result shows that the definitions enhance the maneuverability of sensitivity analysis, and ANSYS PDS is practical.

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Simulation Analysis of Thermal Stress of CFST Arch Bridge During Exothermic Hydration Process

Computational and Experimental Simulations in Engineering - Mechanisms and Machine Science ◽

10.1007/978-3-030-27053-7_86 ◽

2019 ◽

pp. 1015-1021

Author(s):

Jianyuan Sun ◽

Jinbao Xie ◽

Zhisheng Zhang

Keyword(s):

Thermal Stress ◽

Simulation Analysis ◽

Hydration Process ◽

Arch Bridge ◽

Cfst Arch Bridge

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Artificial Neural Network-Based Method for Seismic Analysis of Concrete-Filled Steel Tube Arch Bridges

Computational Intelligence and Neuroscience ◽

10.1155/2021/5581637 ◽

2021 ◽

Vol 2021 ◽

pp. 1-10

Author(s):

Zhen Liu ◽

Shibo Zhang

Keyword(s):

Neural Network ◽

Finite Element Method ◽

Artificial Neural Network ◽

Finite Element ◽

Seismic Analysis ◽

Steel Tube ◽

Arch Bridge ◽

Concrete Filled Steel Tube ◽

Cfst Arch Bridge ◽

Artificial Neural

Seismic analysis of concrete-filled steel tube (CFST) arch bridge based on finite element method is a time-consuming work. Especially when uncertainty of material and structural parameters are involved, the computational requirements may exceed the computational power of high performance computers. In this paper, a seismic analysis method of CFST arch bridge based on artificial neural network is presented. The ANN is trained by these seismic damage and corresponding sample parameters based on finite element analysis. In order to obtain more efficient training samples, a uniform design method is used to select sample parameters. By comparing the damage probabilities under different seismic intensities, it is found that the damage probabilities of the neural network method and the finite element method are basically the same. The method based on ANN can save a lot of computing time.

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Study on Reliability Evaluation Method of Existing CFST Arch Bridge

Applied Mechanics and Materials ◽

10.4028/www.scientific.net/amm.226-228.1679 ◽

2012 ◽

Vol 226-228 ◽

pp. 1679-1682

Author(s):

Yi Song Zou ◽

Hai Tao Hou ◽

Wei Peng

Keyword(s):

System Reliability ◽

Reliability Index ◽

Evaluation Method ◽

Reliability Assessment ◽

Steel Tube ◽

Arch Bridge ◽

Cfst Arch Bridge ◽

Arch Bridges ◽

Grading Standards ◽

Bridge System

Based on reliability theory, the application calculation method of Concrete Filled Steel Tube (CFST) arch bridge system reliability index is studied. Select the most unfavorable load distribution in working condition of maximum moment and deflection at the mid-span, from the angle of strain energy, calculated the weights of CFST arch ribs component. On the basis of the grading standards of reliability assessment of the existing bridge components and the critical structures, CFST arch bridge system reliability assessment grading standards are constructed. CFST arch bridges reliability index are evaluated from two aspects (the arch ribs and segment) in this article. As the CFST arch bridge locates in the marine environment, corrosion environment is the serious level of C5-M, steel pipe corrosion is the major diseases of CFST, arch rib which on the corrosion conditions were assessed. The results show that the method can effectively assess the situation of CFST arch bridge.

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Risk Analysis for the Construction Phases of Long-Span CFST Arch Bridge Based on Finite Element Analysis

Advanced Materials Research ◽

10.4028/www.scientific.net/amr.225-226.823 ◽

2011 ◽

Vol 225-226 ◽

pp. 823-826

Author(s):

Yu Feng Zhang ◽

Guo Fu Sun

Keyword(s):

Finite Element ◽

Risk Analysis ◽

Limit State ◽

Ultimate Limit State ◽

Element Analysis ◽

Nonlinear Buckling ◽

Finite Element Program ◽

Arch Bridge ◽

Cfst Arch Bridge ◽

Element Program

As a part of virtual simulation of construction processes, this paper deals with the quantitative risk analysis for the construction phases of the CFST arch bridge. The main objectives of the study are to evaluate the risks by considering an ultimate limit state for the fracture of cable wires and to evaluate the risks for a limit state for the erection control during construction stages. Many researches have been evaluated the safety of constructed bridges, the uncertainties of construction phases have been ignored. This paper adopts the 3D finite element program ANSYS to establish the space model of CFST Arch Bridge, and to calculate the linear, the geometrical nonlinear and the double nonlinear buckling safety factors under the six different lode cases. Then the bridge’s risks are evaluated according to the results calculated which provide a reference for design of similar project.

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Deflection Test on CFST Arch Bridge with CFRP Slings

Advanced Materials Research ◽

10.4028/www.scientific.net/amr.295-297.1079 ◽

2011 ◽

Vol 295-297 ◽

pp. 1079-1087

Author(s):

Guo Hui Cao ◽

Zhen Yu Xie ◽

Ming Cai Wen ◽

Ran He

Keyword(s):

Bearing Capacity ◽

Ultimate Bearing Capacity ◽

Arch Bridge ◽

Bridge Model ◽

Cfst Arch Bridge ◽

Internal Forces ◽

East And West ◽

Deflection Test

The ultimate bearing capacity test is carried on CFST arch bridge model with CFRP slings, and the deflection of tie-beams, CFST arch, crossbeams, decks is also tested. Studies have shown that before the sliping of 4# CFRP sling, the deflection growth of east and west tie-beam, east and west arch both has good symmetry. The deflection growth of crossbeams and decks also has good symmetry, but after the sliping of 4# CFRP sling(located at the middle of west tie-beam), the structural internal forces redistribution appeared. The deflection of west tie-beam increased suddenly, and the mid-span deflection of west tie-beam is larger than that of east tie-beam by 14.6%. The mid-span deflection of east arch is larger than that of west arch by 9.9%. The deflection of crossbeam at 3L/8 and L/4 sections are respectively larger than those of crossbeam at 5L/8 and 3L/4 sections by 13.8% and 5.3%, The deflection of 3#, 2# and 1# decks are respectively larger than those of 4#, 5# and 6# decks by 7.8%, 13.2% and 17.1%. After the snapping of 10# CFRP sling(located at 3L/8 section of east tie-beam), the structural internal forces would appear redistribution. The deflection of east tie-beam would increase suddenly. The mid-span deflection of east tie-beam is larger than that of west tie-beam by 31.7%, and the mid-span deflection of east arch is larger than that of west arch by 21.3%. The deflection of crossbeam at 3L/8 and L/4 sections are respectively larger than those of 5L/8 and 3L/4 sections by 24.7% and 22.5%. The deflection of 3#, 2# and 1# decks are respectively larger than those of 4#, 5# and 6# decks by 16.2%, 24.5% and 28.6%.

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