Investigation of Experimental Model for Designing Concrete Bridge Deck Reinforced with GFRP Bars

Since the traditional design methods are based on the simply-supported experimental model, the bearing capacity of concrete bridge deck reinforced with GFRP bars is often determined by serviceability limits. The predicted bearing capacity is so low that high reinforcement ratio and construction cost are lead to. However, the previous researches on concrete bridge decks reinforced with GFRP bars revealed that crack widths and deflections were far less than the predictions by traditional codes, due to the existing of compression membrane action. This paper proposes a restraint test model to stimulate the comprehensive working property of deck system，considering the restraint from other part of the deck. Compared with simply-supported test model, bearing capacity and serviceability of the proposed are improved by more than 1 time. New experimental model for designing concrete bridge deck reinforced with GFRP bars are required.

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Prediction Methods for Ultimate Strengths in GFRP Reinforced Concrete Bridge Deck Slabs

Advanced Materials Research ◽

10.4028/www.scientific.net/amr.163-167.1139 ◽

2010 ◽

Vol 163-167 ◽

pp. 1139-1142

Author(s):

Yu Zheng ◽

Yun Feng Pan

Keyword(s):

Reinforced Concrete ◽

Bridge Deck ◽

Prediction Method ◽

Theoretical Method ◽

Concrete Bridge ◽

Membrane Action ◽

Reinforced Concrete Bridge ◽

Deck Slabs ◽

Bridge Deck Slabs ◽

Concrete Bridge Deck

The corrosion of reinforcement embedded in concrete bridge deck slabs has been the cause of major deterioration and of high costs in repair and maintenance. Fibre reinforced polymers (FRP) exhibit high durability in combination with high strength and light weight. The majority of research with FRP bars for reinforcing concrete has been on simply supported beams and slabs where the low value of elasticity of FRP has meant that the service behaviour has been critical. These differences have been attributed to the low value of elasticity of many FRPs compared to steel. However, laterally restrained slabs, such as those in bridge deck slabs, exhibit arching action or compressive membrane action (CMA), which has a beneficial influence on the service behaviour such as the deflection. Based on the previous research on CMA in steel reinforced concrete bridge deck slabs, a modified theoretical method were established according to the material properties of GFRP reinforcement. The proposed prediction method showed a good collection of some reported GFRP reinforced slabs experimental tests.

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Analysis of the Reasonable Construction Size of Concrete Bridge Deck

Applied Mechanics and Materials ◽

10.4028/www.scientific.net/amm.90-93.1027 ◽

2011 ◽

Vol 90-93 ◽

pp. 1027-1032

Author(s):

Xian Xi Tang ◽

Xian Zhou Tang ◽

Yue Xu ◽

Wei Guo

Keyword(s):

Mechanical Properties ◽

Finite Element ◽

Bridge Deck ◽

Bridge Decks ◽

Concrete Bridge ◽

Finite Element Models ◽

Simply Supported ◽

Concrete Bridge Deck ◽

Beam Bridge ◽

T Beam

In order to study the reasonable thickness and width of bridge decks of concrete T beam bridge, 36 ANSYS finite element models of simply supported concrete T beam were established, stress performance of each models have been analyzed under the centre load. The analysis results indicated that when the bridge deck thickness reached 22cm, it was no much sense of influence of bridge decks stress and deflection change by increasing the thickness of the bridge deck, therefore, the recommended value of deck thickness was about 22cm. Since the width of the bridge deck has little effect of the mechanical properties and stiffness of it, so the recommended values of the bridge decks width should be determined combined with the diaphragm and the integral stiffness of T beam bridge.

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Investigation of ultimate strengths of concrete bridge deck slabs reinforced with GFRP bars

Construction and Building Materials ◽

10.1016/j.conbuildmat.2011.09.002 ◽

2012 ◽

Vol 28 (1) ◽

pp. 482-492 ◽

Cited By ~ 20

Author(s):

Yu Zheng ◽

Guoyou Yu ◽

Yunfeng Pan

Keyword(s):

Bridge Deck ◽

Concrete Bridge ◽

Gfrp Bars ◽

Deck Slabs ◽

Bridge Deck Slabs ◽

Concrete Bridge Deck

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Experimental study on transverse stress of different forms of concrete bridge deck

IABSE Congress, Christchurch 2021: Resilient technologies for sustainable infrastructure ◽

10.2749/christchurch.2021.0559 ◽

2021 ◽

Author(s):

Xieli Zhang ◽

Chong Wu ◽

Qingtian Su ◽

Xiaomao Feng ◽

Xiaoyong Zhou

Keyword(s):

Bearing Capacity ◽

Bridge Deck ◽

Steel Plate ◽

Concrete Slab ◽

Ultimate Bearing Capacity ◽

Concrete Bridge ◽

Composite Bridge ◽

Concrete Bridge Deck ◽

Post Tension ◽

Stress And Deformation

<p>Steel plate composite bridge is one of the most widely used form of bridges. With the application of pre- stressed concrete, the improvement of thick steel plate quality and welding technology, steel plate composite bridge with less main girder has been widely used in engineering. To compare the mechanical properties of twin-girder and multi-girder steel plate bridge, two full-scale concrete bridge deck specimens are manufactured and tested. The stress and deformation of the structural members of the two specimens are tested, the development of concrete cracks is recorded in detail, and the ultimate bearing capacity and failure form are obtained. The test results show that the concrete slab in the form of twin-girder with post- tension will not crack under the normal vehicle load, while multi-girder one will crack, and the maximum crack width is 0.02 mm. The ultimate bearing capacity of twin-girder is 622 kN and the multi-girder is 850 kN. The failure mode of twin-girder is tension failure, and multi-girder is compression failure.</p>

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