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Open Access

ARTICLE

Safety Analysis of Precast Pier Box for a Sea-Crossing Bridge During Hoisting

Peijun Xie1,2, Shoulong Zhang1,2,3,#,*, Pengfei Huang1,2, Jintuan Zhang4,#,*
1 CCCC Fourth Harbor Engineering Institute Co., Ltd., Guangzhou, 510230, China
2 Key Laboratory of Environment and Safety Technology of Transportation Infrastructure Engineering, CCCC, Guangzhou, 510230, China
3 School of Civil Engineering and Transportation, South China University of Technology, Guangzhou, 510640, China
4 College of Architecture and Electrical Engineering, Hezhou University, Hezhou, 542899, China
* Corresponding Author: Shoulong Zhang. Email: email; Jintuan Zhang. Email: email
# These authors contributed equally to this work
(This article belongs to the Special Issue: Durability Assessment of Engineering Structures and Advanced Construction Technologies)

Structural Durability & Health Monitoring https://doi.org/10.32604/sdhm.2025.072958

Received 08 September 2025; Accepted 11 November 2025; Published online 23 December 2025

Abstract

To ensure the safety of the integral hoisting of precast pier boxes for sea-crossing bridges, this study focused on the sidewall height of the pier box and the width of the hoisting sling as core variables, established a finite element model using ABAQUS, and conducted a safety analysis of the hoisting process. The results showed that optimal structural safety and cost-effectiveness were achieved by first casting the concrete base plate of the pier box, then constructing the sidewalls to a height of 500 mm, and subsequently using REE-100T eye & eye round slings for hoisting. Additionally, the implementation of local reinforcement measures (symmetrical stiffeners and steel sleeves) at the circular holes in the bottom plate of the pier box significantly alleviated stress concentration at these holes, effectively avoiding the risk of cracking caused by excessive local stress during the hoisting process. On-site hoisting practices verified the effectiveness of this optimized scheme, and the relevant research findings can provide a reference for the safety control of hoisting operations for similar large-scale precast components.

Keywords

Precast pier box; hoisting; finite element method; safety analysis

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