Longitudinal anti-cracking analysis for post-tensioned voided slab bridges

Zhou, Zihao; Meng, Shaoping; Zhao, Longmao

doi:10.12989/sem.2012.43.4.459

Cited by 3 publications

(1 citation statement)

References 8 publications

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“…Combined with the measured stress of box girder concrete near the anchor plate, a spatial finite element model was established by Zheng et al [14] to study the stress distribution in anchorage zone; moreover, the theoretical calculation and measured data were analyzed and compared. Zhou et al [15] proposed two possible models for longitudinal anti-cracking analysis at the anchor end of post-tensioned concrete voided slab girders. The practical analysis method for longitudinal anti-cracking is established by differential element analysis.…”

Section: Introductionmentioning

confidence: 99%

Local Stress Behavior of Post-Tensioned Prestressed Anchorage Zones in Continuous Rigid Frame Arch Railway Bridge

Mao

Gou

et al. 2018

Applied Sciences

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The concrete stress behavior and cause of cracking at the anchorage zones of top and bottom slabs of a post-tensioned prestressed concrete box beam were studied. Based on the complex stress distribution under local anchor problem for the Yichang Yangtze River Bridge, which is the longest continuous rigid frame arch railway bridge in the world, model tests were conducted. Two full-scale specimens of top and bottom slabs were fabricated and gradually loaded based on principle of equivalent stress. The goal was to analyze the longitudinal and transverse stress distributions of cross sections of specimens at various loading cases during the experiment. From the experimental results, it can be concluded that the mechanical behavior of the concrete and steel bars were in good agreement when prestressed tendons were loaded. Tensile stress of concrete in prestressed anchorage zone gradually increased and surpassed the ultimate tensile strength of concrete with the increasing load. Consequently, local longitudinal cracking was formed at the anchorage block. Some recommendations to avoid the concrete at the anchorage zone continuing to crack are summarized in this paper.

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Section: Introductionmentioning

confidence: 99%

Local Stress Behavior of Post-Tensioned Prestressed Anchorage Zones in Continuous Rigid Frame Arch Railway Bridge

Mao

Gou

et al. 2018

Applied Sciences

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Experimental investigation and evaluation of shear performance of hollow slab beams strengthened by cavity grouting method

Yang,

Guo,

Yang

et al. 2024

Case Studies in Construction Materials

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Numerical Analysis on Different Void Former On ANSYS

Jain

Hussain

2021

IOP Conf. Ser.: Earth Environ. Sci.

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The use of construction materials has risen as culture and technology have grown. Concrete is the most often used of all the essential construction materials. To meet structural specifications, traditional architecture approaches include participants with large sizes. These massive structural elements including columns, slabs, beams, footings, partitions, and so on These massive structural structures have an effect on the volume of concrete used in building around the world. This, in particular, warns us to limit our use of concrete as a building medium because concrete not only adds to the dead load of a house but also produces carbon dioxide as a byproduct, making it detrimental to our climate. This research uses a bi-axial voided slab with various void formers, such as cylindrical, spherical, rectangular, trapezium, and square, spaced at 10mm centre to centre. It removes the concrete from the centre of the slab, resulting in a self-weight reduction of around 6% to 10%. A two bi-axial voided slab functions similarly to a standard slab. The final results met the requirements for strength and serviceability.

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Longitudinal anti-cracking analysis for post-tensioned voided slab bridges

Cited by 3 publications

References 8 publications

Local Stress Behavior of Post-Tensioned Prestressed Anchorage Zones in Continuous Rigid Frame Arch Railway Bridge

Local Stress Behavior of Post-Tensioned Prestressed Anchorage Zones in Continuous Rigid Frame Arch Railway Bridge

Experimental investigation and evaluation of shear performance of hollow slab beams strengthened by cavity grouting method

Numerical Analysis on Different Void Former On ANSYS

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