Material-structure integrated design optimization of GFRP bridge deck on steel girder

Xin, Haohui; Mosallam, Ayman; Correia, José A.F.O.; Liu, Yuqing; He, Jun; Sun, Yun

doi:10.1016/j.istruc.2020.07.008

Cited by 14 publications

(4 citation statements)

References 31 publications

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“…Gopinath et al [4] proposed all-FRP deck panels using hybrid glass and jute fibers and compared the deflection of several cross-sections. Xin et al [5] optimized an all-FRP bridge deck on steel girders. The objective of the optimization was to maximize the bridge span and minimize the construction cost.…”

Section: Introductionmentioning

confidence: 99%

Integrated and Computationally-Efficient Analysis Method for FRP Building Floor Panels

2023

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Due to the many advantages of FRP decks, such as lightweight and high strength, recently, using FRP decks as building deck panels is considered an alternative choice to traditional decks. Accordingly, there is an increasing need for an analysis tool for engineering and academic applications. Finite element is an accurate and reliable method for analyzing FRP decks. However, high computational cost and modeling difficulty somewhat limit its application. To overcome this shortcoming, this study presents an integrated, easy-to-use, computationally-efficient, and yet rather accurate analysis method for FRP decks. This integrated method was implemented in a computer code and can be easily used to analyze building FRP deck panels. To evaluate the deck's applicability as a building floor panel system, some requirements are needed to be met, including maximum allowable elastic deflection, local stability of components, vibration frequency, and ductility of the flooring system. The proposed method uses the Rayleigh-Ritz method to calculate these requirements. Using three different FRP deck examples, it was shown that the proposed method is generic and capable of analyzing various forms of the FRP deck panels, including all-FRP and hybrid decks made of two or more different materials.

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Section: Introductionmentioning

confidence: 99%

Integrated and Computationally-Efficient Analysis Method for FRP Building Floor Panels

2023

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“…It consumes few natural resources, making the composite girder bridge more environment-friendly than traditional steel-reinforced concrete bridges. So far, many steel-concrete composite girder bridges have been constructed worldwide [4][5][6][7][8].…”

Section: Introductionmentioning

confidence: 99%

Cracking control technique for continuous steel-concrete composite girders under negative bending moment

2023

Archives of Civil Engineering

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Continuous steel-concrete composite girder can fully utilize material strength and possess large spanning ability for bridge constructions. However, the weak cracking resistance at the negative bending moment region of the girder seriously harms its durability and serviceability. This paper investigates practical techniques to improve the cracking performance of continuous steel-concrete composite girders subjected to hogging moment. A real continuous girder was selected as the background bridge and introduced for numerical analysis. Modeling results show that under the serviceability limit state, the principle stress of concrete slabs near the middle piers of the bridge was far beyond the allowable material strength, producing a maximum tensile stress of 10.0 MPa. Approaches for strengthening concrete decks at the negative moment region were developed and the effectiveness of each approach was assessed by examing the tensile stress in the slabs. Results indicate that the temporary counterweight approach decreased the maximum tensile stress in concrete slabs by 22%. Due to concrete shrinkage and creep, more than 65% of the prestressed compressive stresses in concrete slabs were finally dispersed to the steel beams. A thin ultra-high performance concrete (UHPC) overlay at the hogging moment region effectively increased the cracking resistance of the slabs, and practical engineering results convicted the applicability of the UHPC technique.

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“…Due to its special material and the environment in which it is located, steel bridge decks have very high requirements for water and rust resistance [15,16]. To eliminate direct contact between the steel bridge deck and water when designing the steel deck pavement, the mix grading design requires that the water penetration coefficient should reach no water penetration [17,18]. However, during the actual construction and subsequent opening to traffic, it is difficult to ensure that the steel bridge deck paving layer is completely watertight due to construction uniformity, joints, and bridge deck paving cracking.…”

Section: Introductionmentioning

confidence: 99%

Study of Internal Drainage Systems for Steel Bridge Deck Pavements

Nie

Wang

Huang³

et al. 2022

Buildings

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As large span steel bridges develop rapidly, the type of steel deck paving is also diversifying. However, the current steel deck paving layer is a dense-graded mixture of both upper and lower layers. This makes it difficult for water to drain out of the dense deck when it enters the interior of the deck, and the deck is easily damaged by the traffic load. This paper aims to prolong the service life of the pavement and solve the problem that the pavement is prone to water damage under the existing pavement system. In this paper, a new steel bridge deck paving system is formed by developing a new type of waterproofing binder layer material and developing an open-graded paving layer underlayment. Through indoor tests and finite element software analysis, the effect of the environment on the pull-out strength of the waterproofing binder layer material under different permaculture conditions is investigated; a suitable void ratio control range for the paving layer is explored through paving layer seepage analysis and indoor tests. The study revealed that the new epoxy resin waterproofing bonding layer was able to maintain a large pull-out strength value in a 60 °C water bath for 2 weeks. The paving with void ratios of 18, 20, and 22% were all able to drain 50% of the water inside the paving within 2 h, with excellent drainage capacity. Based on the modeling analysis and indoor test results, the target void ratio of the asphalt mix under the pavement is recommended to be controlled at 20–22%, with a void ratio in this range to solve the problem of water entering the steel bridge deck pavement and causing pavement distress.

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Material-structure integrated design optimization of GFRP bridge deck on steel girder

Cited by 14 publications

References 31 publications

Integrated and Computationally-Efficient Analysis Method for FRP Building Floor Panels

Integrated and Computationally-Efficient Analysis Method for FRP Building Floor Panels

Cracking control technique for continuous steel-concrete composite girders under negative bending moment

Study of Internal Drainage Systems for Steel Bridge Deck Pavements

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