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Abstract

To study the mechanical performance of cap beams of piers on prefabricated concrete bridges, this paper conducted static tests on the components of prefabricated cap beam shells poured with concrete. Meanwhile, finite element software Abaqus was adopted to numerically simulate the cap beam specimens with different structural measures of joint bars and concrete shear keys at the interface of prefabricated cap beam shells poured with concrete. Based on this, the model of prefabricated cap beams and cast-in-place cap beams was built, and pseudo-static low-cycle reset displacement analysis was carried out. The results show that the internal cast-in-place scheme of prefabricated shells is feasible for prefabricated cap beams. The integral casting and molding of bridge piers and corbels can temporarily fix the cap beams and enhance the connection performance of the joints. The prefabricated cap beam shells are poured with concrete at the interface, and the utilization of concrete shear keys and joint bars can demonstrate their sound force transmission performance. Prefabricated cap beams are equivalent to cast-in-place cap beams, and the peak bearing capacity of prefabricated cap beams is higher than that of cast-in-place cap beams, with a reduced ductility coefficient.

Publication Date

1-18-2024

DOI

10.14048/j.issn.1671-2579.2023.06.033

First Page

208

Last Page

217

Submission Date

March 2025

Reference

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