基于实测几何缺陷的双曲冷却塔受力性能研究

黄粤文; 冯又全; 陈俊岭; 汪彦辰

doi:10.3724/j.gyjzG26030401

基于实测几何缺陷的双曲冷却塔受力性能研究

doi: 10.3724/j.gyjzG26030401

1. 同济大学土木工程学院, 上海 200092;
2. 同济大学建筑设计研究院(集团)有限公司, 上海 200092

详细信息

作者简介:
黄粤文,硕士研究生,主要从事高耸结构研究,2430720@tongji.edu.cn。

通讯作者:
陈俊岭,博士,教授,主要从事高耸结构方面的研究,chenjl@tongji.edu.cn。

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出版历程
- 收稿日期: 2026-03-04
- 网络出版日期: 2026-06-06

Research on the Mechanical Properties of a Hyperbolic Cooling Tower Based on Measured Geometric Imperfections

1. College of Civil Engineering, Tongji University, Shanghai 200092, China;
2. Tongji Architectural Design (Group) Co., Ltd., Shanghai 200092, China

摘要

摘要: 双曲冷却塔塔筒多为现浇钢筋混凝土薄壳结构，其高空施工难度极大，往往会由于施工放样的精度问题导致几何缺陷的产生。以某工程实例为研究对象，利用地面激光扫描（TLS）技术获取了塔筒的真实几何缺陷数据，并据此在ABAQUS中建立了有/无几何缺陷的双曲冷却塔有限元模型，系统研究了几何缺陷对双曲冷却塔结构受力性能的影响以及不同荷载效应对几何缺陷的敏感性。结果表明：基于实测几何缺陷分布模式，采取实际缺陷幅值时冷却塔塔筒的承载能力和抗裂性能显著降低，而缺陷幅值小于150 mm时塔筒受力性能则未出现劣化现象；永久荷载和外风压荷载效应对几何缺陷尤为敏感，而温度效应几乎不受缺陷影响；最大外风吸力所处塔筒子午线上的缺陷部位是安全性评估的关键区域。
- 冷却塔 /
- 受力性能 /
- 有限元分析 /
- 几何缺陷 /
- 荷载效应 /
- 缺陷敏感性
Abstract: Hyperbolic cooling tower shells are mostly cast-in-place reinforced concrete thin-walled structures. Their high-altitude construction poses significant challenges， and geometric imperfections often occur due to issues in construction layout accuracy. Focusing on a specific engineering case， this study employed terrestrial laser scanning （TLS） technology to capture precise geometric imperfection data of the tower shell. Based on the scanned data， finite element models of the hyperbolic cooling tower， both with and without geometric imperfections， were developed using ABAQUS. The effects of geometric imperfections on the mechanical properties of the cooling tower， as well as the sensitivity of different load effects to these imperfections， were systematically investigated. The results indicated that when the actual imperfection magnitude was introduced based on the measured distribution pattern， the bearing capacity and crack resistance of the tower shell decreased significantly. Moreover， no deterioration in mechanical properties was observed when the imperfection magnitude remained below 150 mm. The effects of dead load and external wind pressure were highly sensitive to geometric imperfections， whereas temperature effects remained almost unaffected. Furthermore， the locations along the meridian lines of the tower shell where the maximum external wind suction occurs were identified as critical regions for safety assessment.
- cooling tower /
- mechanical properties /
- finite element analysis /
- geometric imperfections /
- load effects /
- imperfection sensitivity

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