Strength of Loop Connections between Precast Bridge Decks Loaded in Combined Tension and Bending

Jørgensen, Henrik Brøner; Hoang, Linh Cao

doi:10.2749/101686614x14043795570697

Cited by 23 publications

(18 citation statements)

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“…A loud sound was heard during the rupture of wires. Similar load versus deformation behavior was observed by various researchers for specimen with loop boxes, as reported by Jorgensen . Also, similar behavior was observed by Jorgensen et al for T‐connections with single wire loop boxes.…”

Section: Test Resultssupporting

confidence: 89%

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Study of shear behavior of grouted vertical joints between precast concrete wall panels under direct shear loading

Biswal

Prasad

Sengupta

2018

Structural Concrete

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A precast wall‐type building is constructed by stacking wall panels and slabs. This paper presents a study of the in‐plane shear behavior of vertical grouted joints between precast panels. Thirteen jointed wall panel specimens were tested under direct shear. Based on the results, analytical expressions were developed to predict the shear load versus slip behavior. These can be used in computational models of precast wall type buildings, through modeling of shear springs between the panels. To demonstrate the application, a numerical analysis of an isolated jointed shear wall was performed. The wall was modeled for three cases, (a) monolithic wall, (b) two walls with a gap and (c) two walls with shear links. Based on non‐linear pushover analysis, it was demonstrated that the modeling of jointed walls using shear links reduces the conservatism inherent in a model neglecting the shear transfer across the joint.

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Section: Test Resultssupporting

confidence: 89%

“…Theory of plasticity was used to calculate the shear strength of castellated joint . Jorgensen proposed expressions to calculate the shear capacity based on rigid‐plastic upper bound model, for specimens with loop boxes. These expressions assumed that the rupture of looped wire ropes should not govern the failure of the joint.…”

Section: Literature Reviewmentioning

confidence: 99%

Study of shear behavior of grouted vertical joints between precast concrete wall panels under direct shear loading

Biswal

Prasad

Sengupta

2018

Structural Concrete

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“…It may also be the case for suspension reinforcement ( Fig. 2c), joints of precast elements with overlapping reinforcement [9] (Fig. 2d) or the anchorage of the web reinforcement in flanged section members [10][11]; -The second corresponds to concrete members where the development of these cracks is uncontrolled.…”

Section: Introductionmentioning

confidence: 99%

“…2d) or the anchorage of the web reinforcement in flanged section members [10][11]; -The second corresponds to concrete members where the development of these cracks is uncontrolled. This is for instance the case for delamination cracks along the flexural reinforcement of arch-shaped members [12] or of members without transverse reinforcement [13], where [7]; (b) transverse reinforcement in two-way slabs [8]; (c) suspended loads; and (d) joints of precast elements [9] 2…”

Section: Introductionmentioning

confidence: 99%

Bond behaviour of straight, hooked, U‐shaped and headed bars in cracked concrete

Brantschen

Faria²,

Ruiz

et al. 2016

Structural Concrete

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Most classic investigations on bonding properties in reinforced concrete have been performed on the basis of pull‐out tests, where a reinforcement bar is pulled out from an uncracked concrete cylinder, prism or cube. In these tests, the bond is governed by the concrete strength and bar surface properties of the reinforcement (bond index, rib geometry) or by the splitting strength of the concrete (concrete cover). In the latter case, bond failure occurs due to uncontrolled cracking of the concrete specimen. In contrast to these fundamental tests, bond in many structural members is activated within already cracked concrete. This is particularly relevant for the reinforcement in beams and slabs (both for flexural and transverse reinforcement), as the reinforcing bars might be located at planes where flexural cracks develop. The opening of these cracks along the reinforcement is nevertheless not uncontrolled (as opposed to splitting failures), but it is governed by the bending deformations. The bond properties and strength of the reinforcement in actual members are therefore influenced by the opening of these cracks and are potentially different from those observed in classic pull‐out tests. The present paper aims to address this topic by presenting the results of an experimental investigation with 89 monotonic pull‐out tests performed on cracked ties. The opening of the cracks was controlled while transverse bars – located in the plane of these cracks – were pulled out from the specimens. The tests were performed for crack openings ranging from 0.2 mm to 2.0 mm in order to cover conditions both at the serviceability and ultimate limit states. The results show a very significant influence of in‐plane cracking on both strength and bond‐slip stiffness, with decreasing mechanical performance for increasing crack openings. The performance of different actual anchorage types (straight, hooked, U‐shaped and headed bars) – generally characterized through force‐slip relationships – is finally analytically investigated and compared to the test results.

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“…Short U-bar splices have been shown by several researchers [10][11][12][13][14][15][16] to be effective in tension. Ma et al [13] tested 16 mm diameter U-bar splices in tension, with a minimum concrete cylinder strength of 48 MPa, and found lap strength to increase with concrete strength and lap length.…”

Section: Figure 1: Typical Headed Bar Jointmentioning

confidence: 99%

Headed Bar Connections Between Precast Concrete Elements: Design Recommendations and Practical Applications

2018

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Strength of Loop Connections between Precast Bridge Decks Loaded in Combined Tension and Bending

Cited by 23 publications

References 0 publications

Study of shear behavior of grouted vertical joints between precast concrete wall panels under direct shear loading

Study of shear behavior of grouted vertical joints between precast concrete wall panels under direct shear loading

Bond behaviour of straight, hooked, U‐shaped and headed bars in cracked concrete

Headed Bar Connections Between Precast Concrete Elements: Design Recommendations and Practical Applications

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