Abstract
In the construction of urban rail transit, cracks in concrete structures are inevitable. The ability to properly manage concrete cracking issues determines whether structures can meet serviceability and durability requirements. This study leverages the ongoing subway station project of Fuzhou Urban Rail Transit Line 4 to statistically analyze and categorize concrete cracks occurring during construction, measure their depths and widths, and implement targeted remediation measures according to crack type. Through analytical synthesis of these concrete structure crack remediation measures, the work provides guidance for subsequent construction activities and accumulates valuable experience for future crack management in subway station concrete structures.
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Preamble
A Preliminary Analysis of Treatment Measures for Concrete Cracks in Metro Stations
Yang Zongxin¹
¹Shanghai Tunnel Engineering Co., Ltd., Shanghai 200000, China
Abstract
In the construction of urban rail transit, cracks in concrete structures are inevitable. Whether these cracks can be properly addressed determines whether the concrete structures can meet service requirements and durability standards. Drawing upon the ongoing metro station project for Fuzhou Urban Rail Transit Line 4, this paper systematically documents and classifies concrete cracks that occurred during construction, measuring their depth and width. Corresponding treatment measures were implemented based on different crack types. Through analysis and summarization of these concrete crack treatment measures, this study provides guidance for subsequent construction work and accumulates valuable experience for future crack remediation in metro station concrete structures.
Keywords: concrete cracks; surface cracks; deep cracks; through cracks; treatment measures