Design and Numerical Analysis of an Externally Heated Geothermal Bridge Deck

In order to analyze the response and influencing factors from vehicle-bridge coupled vibration between curved continuous rigid frame bridge and whole vehicle model of 7 degrees of freedom, a spatial numerical analysis method of vehicle-bridge coupled vibration caused by bridge deck roughness was proposed. According to power spectrum density advised by GB/T 7031-2005, bridge deck roughness was simulated by the application of Fourier reverse transform. Because of delay of front and rear axles and correlation between left and right wheels, the roughness sequence of each wheel was obtained by the frequency response function solved by means of random vibration theory. The samples were taken as the input disturbances, rules of vehicle-bridge coupled vibration response under different grades of bridge deck were obtained using the finite element software ANSYS. Analysis results indicate that the value of dynamic coefficients of displacement and torsional angle increase sharply along with the grade increase of bridge deck roughness, and accurate simulation of bridge deck roughness is crucial for analyzing and evaluating the impact of vehicles on the bridge.

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Efficient composite bridge deck consisting of GFRP, steel, and concrete

Journal of Sandwich Structures & Materials ◽

10.1177/1099636216688347 ◽

2017 ◽

Vol 21 (1) ◽

pp. 154-174 ◽

Cited By ~ 4

Author(s):

E Alizadeh ◽

M Dehestani ◽

B Navayi Neya ◽

Mahdi Nematzadeh

Keyword(s):

Numerical Analysis ◽

Glass Fiber ◽

Bridge Deck ◽

Concrete Slab ◽

Fiber Reinforced Polymer ◽

Glass Fiber Reinforced Polymer ◽

Reinforced Polymer ◽

Glass Fiber Reinforced ◽

Composite Bridge ◽

Composite Bridge Deck

In this paper, a new cost-effective composite bridge deck consisting of multiple steel box cells, concrete slab, and glass fiber-reinforced polymer layer is investigated. First, the structural performance of the deck under static loading is evaluated experimentally. Then the results are validated by a finite element program. Results of the numerical analysis are in good agreement with those of the experiments. The load–displacement relationship, ultimate flexural resistance, failure mode, neutral axis, and strain distribution on glass fiber-reinforced polymer layer and concrete slab are examined during the test. Final results revealed that the ultimate failure of the composite deck initiates by longitudinal cracking on the top surface of the concrete slab. No debonding occurs at the interface between concrete slab and steel boxes which indicates that perfobond ribs could be effectively used for shear connection. The results of experimental and numerical analysis demonstrated that the bridge deck possesses desirable strength and meets the stiffness requirements.

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Mechanism of Early Cracking and Serviceability of Precast Reinforced Concrete Bridge Deck Slabs

Applied Mechanics and Materials ◽

10.4028/www.scientific.net/amm.34-35.1369 ◽

2010 ◽

Vol 34-35 ◽

pp. 1369-1373

Author(s):

Juan Huang ◽

Li Qun Tang

Keyword(s):

Reinforced Concrete ◽

Numerical Analysis ◽

Bridge Deck ◽

Cost Effective ◽

Transverse Cracks ◽

Control Measurement ◽

Crack Control ◽

Deck Slabs ◽

Bridge Deck Slabs ◽

Concrete Bridge Deck

In the light of the mechanism of early cracking in a batch of precast reinforced concrete hollow slabs of four certain bridges in construction whose midspan appears transverse cracks, investigation ranging from method of construction to distribution of cracks are conducted in situ. The possibility of the occurrence of cracks is discussed in detail. Theoretical calculation as well as numerical analysis reveals that the main reason of formation early cracking in slabs is self-weight loading. In order to assess the performance of the bridge deck system which appears cracks and evaluate the effect of early cracking on structural behavior, numerical analysis is performed to conclude that the bridge deck is satisfied with the serviceability requirements. In view of the fact that this kind of slab is widely used in bridge projects for convenience in construction and advantage in cost, effective and economical crack control measurement and technical proposal are recommended with regard to the design, construction and amendment of design specifications.

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