TITLE:
Detection and Genesis Analysis of Cracks in Prestressed Box Girder of a Certain Project
AUTHORS:
Mingnan Ji
KEYWORDS:
Prestressed Box Girder, Crack Detection, Cause Analysis, Treatment Measures
JOURNAL NAME:
World Journal of Engineering and Technology,
Vol.12 No.4,
November
22,
2024
ABSTRACT: This paper introduces a crack detection example of the prestressed box girder in a certain project. The morphology of the box girder cracks was surveyed and mapped. The length, width, and depth of the cracks were inspected, and the strength and reinforcement configuration of the components were tested. The test results indicate that the strength and reinforcement configuration of the inspected components meet the design requirements. The crack at the end of the top plate of the box girder is a local compressive crack at the anchorage end. The width and length of the crack on the bottom surface of the top plate are not significant, and the depth is relatively shallow. Judging from the crack morphology, this crack is identified as a temperature crack. Additionally, based on the treatment measures for cracks of different widths, the treatment measures for the cracks of the components in this project are derived, providing a reference basis for similar projects in the future.