Structural behavior of cast-in-place and precast concrete barriers subjected to transverse static loading and anchored to bridge deck overhangs

NamyMatthew,; Charron, Jean‐Philippe; MassicotteBruno,

doi:10.1139/cjce-2013-0328

Cited by 11 publications

(8 citation statements)

References 5 publications

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“…Previous research has proven the effectiveness of field-cast connections ( 10 , 17 ). A new concept for the barrier-to-deck connection is envisioned with an aim to develop the yield line failure pattern in the prefabricated barrier system which can undergo large displacement ductility.…”

Section: Proposed Uhpc Connectionmentioning

confidence: 99%

“…A series of static tests on different locations was conducted to investigate the performance of each connection and bridge deck overhang. The tests carried out by Namy et al used high-performance fiber-reinforced concrete (HPFRC) to fill the recesses in precast barriers ( 10 ). Their objective was to investigate the behavior of bridge deck overhangs under different precast barrier configurations.…”

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confidence: 99%

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Experimental and Numerical Investigation of Prefabricated Concrete Barrier Systems Using Ultra-High-Performance Concrete

Khodayari

Mantawy

Azizinamini

2023

Transportation Research Record: Journal of the Transportation R

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The functionality and crashworthiness of concrete barriers in bridge systems can be affected by the deterioration of the connection between bridge decks and concrete barriers. A set of details for barrier-to-deck connections for accelerated bridge construction (ABC) applications are proposed. Component-level testing was carried out on a conventional cast-in-place (CIP) detail and two versions of connections using ultra-high-performance concrete (UHPC). The use of UHPC allows for shorter development length and lap splice length for dowel bars and the material characteristics provide strength and durability to the connection. Two connection details were proposed: (1) UHPC connection within the barrier segment (U-shape connection) and (2) UHPC connection in a recess inside the bridge deck (recessed connection). Besides simplified details, the construction sequence of the proposed recessed connection is suitable for ABC applications. It is observed that the proposed U-shape connection detail is emulative of the equivalent CIP concrete barrier system. However, the recessed connection system can undergo significantly larger deflections at ultimate load compared with the CIP barrier system and exhibits a preferred mode of failure while the deck does not undergo significant damage. The results of the component testing were used to calibrate non-linear finite element models. Using validated models, numerical analyses were performed to investigate the structural performance of conventional 15 ft long barrier modules connected to the deck overhang using the recessed connection. The model was subjected to the end-loading configuration and it was found that the proposed barrier system meets the strength requirement for the corresponding test level.

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Section: Proposed Uhpc Connectionmentioning

confidence: 99%

mentioning

confidence: 99%

Experimental and Numerical Investigation of Prefabricated Concrete Barrier Systems Using Ultra-High-Performance Concrete

Khodayari

Mantawy

Azizinamini

2023

Transportation Research Record: Journal of the Transportation R

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“…The independent overlaid pavement is a rigid structural layer with both bending resistance and shearing resistance. Most of existing studies on overlaid pavement mainly have focused on the mechanical analysis, design theory, material properties, and disease prevention [9][10][11][12][13][14][15], but only few have analyzed the stresses shared by the overlaid pavement and girder. The reinforcement of bridge structures with small and medium spans by overlaid pavement was introduced from the perspective of applicable conditions, material requirements, mechanical characteristics, design calculation, construction measures, and process quality control [7].…”

Section: State Of the Artmentioning

confidence: 99%

Effect of Overlaid Pave ment on Transverse Load Distribution in Existing Assembly Slab Bridges

Wang¹,

Liu²,

Wei³

et al. 2017

JESTR

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The bearing capacity of old assembly slab bridges is reduced by component cracking, material aging, and structural damage. To avoid excessive dismantling of bridges with inadequate bearing capacity, the influence mechanism of overlaid pavement on existing assembly slab bridges was analyzed by theoretical analysis and numerical simulation in this study. The basic equation for assembly slab bridges was established by considering the bending resistance and shearing resistance of the overlaid pavement and based on the fundamental principle of force method. The formula for the vertical coordinate of the influence line of the transverse load distribution (TLD) was constructed using a half-sine unit load. On this basis, the variations in the vertical coordinate with rigidity, slab width, and bridge span were analyzed. Moreover, the influences of the overlaid layer thickness on assembly slab bridges with different spans (13, 16, and 20 m) were analyzed. Results show that the overlaid pavement can significantly affect the influence line of the TLD. The influence of the overlaid pavement on the TLD factor should be taken into account for assembly slab bridges with spans of 16 m or smaller. However, such influence is negligible for bridges with spans of 20 m or larger. The overlaid pavement can increase structural integrity and reduce the TLD factor to some extent. But an overlaid pavement thickness of more than 20 cm only slightly influences the TLD factor. The study can meet the demand of reconstruction of old bridges based on overlaid pavement. The proposed method solves issues related to the low bearing capacity of these old assembly slab bridges.

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“…Recent studies, developed by the authors and based on the outcomes of full-scale experimental tests, showed, for example, the effectiveness of a new technology based on the use of high-performance fiber-reinforced concrete (HPFRC), in order to eliminate the traditional steel reinforcement, 11,12 providing advantages, not only in terms of cost reduction (due to reduction of the construction time, with the main advantage of limiting traffic interruption), but also in terms of improvement in quality and structural performance. Other research on this aspect was also carried out by Namy et al 13,14 The adoption of innovative reinforcement such as glass fiber-reinforced polymers (GFRP) bars in concrete kerbs is analyzed in References. [15][16][17] The design and safety checks of the kerb safety barrier system are still an object of discussion in many technical councils.…”

Section: Introductionmentioning

confidence: 99%

Full‐scale tests on bridge kerbs subjected to horizontal actions

Meda

Rinaldi

Spagnuolo

et al. 2020

Structural Concrete

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The construction of new kerbs or the replacement of existing ones is usually due to the need of installing safety or anti-noise barriers. A suitable experimental survey has been studied and developed at the Laboratory of the University of Rome "Tor Vergata" aiming at verifying the vulnerability of the system kerb safety barrier in a bridge deck. The main scope is the analysis, through fullscale experimental tests, of the system performances under horizontal actions simulating the vehicle derailment. Particular care has been devoted in reproducing actual geometries and materials. Furthermore, the actual elements usually installed in Italian infrastructures (roadways and highways), are adopted, in order to highlight the true damage typologies and failure modes.Both the cases of application of barriers on existing and new cast kerbs are analyzed, and two kerbs geometries, generally found in Italian bridges are cast and tested. The obtained results provide useful information on the safety check to be developed on this kind of structures.

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Structural behavior of cast-in-place and precast concrete barriers subjected to transverse static loading and anchored to bridge deck overhangs

Cited by 11 publications

References 5 publications

Experimental and Numerical Investigation of Prefabricated Concrete Barrier Systems Using Ultra-High-Performance Concrete

Experimental and Numerical Investigation of Prefabricated Concrete Barrier Systems Using Ultra-High-Performance Concrete

Effect of Overlaid Pave ment on Transverse Load Distribution in Existing Assembly Slab Bridges

Full‐scale tests on bridge kerbs subjected to horizontal actions

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