Experimental study on shear performance of bond-tooth dry joints in prestressed assembled concrete beams

Wu, Jin; Liu, Duo; Chen, Xudong; Zhang, Jiandong

doi:10.1016/j.jobe.2023.106189

Cited by 4 publications

(2 citation statements)

References 24 publications

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“…An Haiyu et al [3] developed a prestressed ribbed two-way composite slab with integral connection of two-way slabs, which can be designed according to the design theory of ordinary twoway slabs. Wu Fangbo et al [4][5] developed a PK slab with two-way slab close joint connection, which is suitable for large-span building structures, by using concrete ribs with holes that facilitate the insertion of reinforcement. At the same time, in order to further increase the service span of PK boards, Wu Fangbo, Liu Biao and others [6][7] developed two kinds of hollow PK boards, namely, forward core and horizontal core, with a service span of more than 6.6m.…”

Section: Introductionmentioning

confidence: 99%

“…Wu Fangbo et al [4][5] developed a PK slab with two-way slab close joint connection, which is suitable for large-span building structures, by using concrete ribs with holes that facilitate the insertion of reinforcement. At the same time, in order to further increase the service span of PK boards, Wu Fangbo, Liu Biao and others [6][7] developed two kinds of hollow PK boards, namely, forward core and horizontal core, with a service span of more than 6.6m. The two-way ribbed floor sandwich laminated plate developed by Liu Xudong et al [8] can further strengthen the bending stiffness and cracking performance of the prefabricated floor in the vertical rib direction.…”

Section: Introductionmentioning

confidence: 99%

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Experimental Study on Flexural Behavior of the Composite Bottom Slab of the Stiffened Steel Truss

Zhang

Chen

et al. 2023

J. Phys.: Conf. Ser.

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In order to study the influence of rib size on the flexural performance of the new reinforced truss concrete composite floor slab, two precast reinforced concrete floor slabs and one ordinary reinforced truss composite floor slab were designed and manufactured for flexural performance tests. The failure mode of the concrete slab under uniform load was analyzed, and the influence of rib size on the flexural capacity of the floor slab was studied. The results show that the stiffening of the steel truss composite slab can significantly improve the stiffness of the precast slab and effectively solve the problem of excessive deflection of the precast slab during construction. On the basis of the experimental study, the influence of the top chord steel bar diameter, concrete rib height and rib width on the short-term stiffness of the floor is deeply analyzed by using the finite element refined modeling. The results show that the diameter of the top chord reinforcement and the width of the concrete rib are positively related to the stiffness of the composite slab, and the height of the concrete rib has little effect on the initial stiffness of the precast slab, which mainly plays a role in the later stage.

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Experimental Study on Flexural Behavior of the Composite Bottom Slab of the Stiffened Steel Truss

Zhang

Chen

et al. 2023

J. Phys.: Conf. Ser.

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Study on shear behavior and acoustic emission characteristics of precast concrete segmental cover beams with large key teeth

Tian,

Liu,

Chen

et al. 2024

Structural Concrete

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The mechanical characteristics of segmental joints are pivotal in defining the comprehensive stress behavior of prefabricated assembled cover beams. In this research, direct shear tests were conducted on dry key‐tooth joints, and acoustic emission technology was employed for monitoring purposes. The shear failure mechanism was explored under a range of influential parameters. Building upon these observations, the study delved into the mechanical response of joints within segmental cover girders subjected to concurrent bending and shear forces. Specimen K‐3‐3 exhibited a higher shear carrying capacity compared to other specimens, indicating that the shear resistance of dry joints proportionally increases with the height of the specimen and the strength of the concrete. The carrying capacity of Specimen K‐4 was marginally lower than that of Specimens K‐3‐1 and K‐3‐2, suggesting that increasing the number of keys does not significantly impact the shear resistance of dry joints. Notably, Specimen K‐3 demonstrated exceptional shear carrying capacity, exhibiting minimal relative slip during failure, and streamlined the casting process. Consequently, these dry joints featuring large key teeth are deemed more appropriate for use as shear connectors in precast concrete segmental cover beams. Crack patterns in large key tooth precast concrete segmental cover beams propagate along the joints. A damage evolution model for the specimens, based on spatial b‐values and T‐values, visually depicts the damage extent in large key tooth precast concrete segmental cover beams. This model demonstrates excellent agreement with experimental results and provides a solid foundation for theoretical research and practical applications of large key tooth precast concrete segmental cover beams.

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Experimental study on oblique-shear performance of splicing joint for precast ultrahigh-performance concrete segmental bridges

Zheng

Gong

Chen

et al. 2023

Case Studies in Construction Materials

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Experimental study on shear performance of bond-tooth dry joints in prestressed assembled concrete beams

Cited by 4 publications

References 24 publications

Experimental Study on Flexural Behavior of the Composite Bottom Slab of the Stiffened Steel Truss

Experimental Study on Flexural Behavior of the Composite Bottom Slab of the Stiffened Steel Truss

Study on shear behavior and acoustic emission characteristics of precast concrete segmental cover beams with large key teeth

Experimental study on oblique-shear performance of splicing joint for precast ultrahigh-performance concrete segmental bridges

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