耦合数值仿真与时空插值融合的山区桥梁温度场三维建模方法

doi:10.11947/j.AGCS.2025.20240123

测绘学报 ›› 2025, Vol. 54 ›› Issue (4): 749-759.doi: 10.11947/j.AGCS.2025.20240123

• 摄影测量学与遥感 • 上一篇

耦合数值仿真与时空插值融合的山区桥梁温度场三维建模方法

李维炼¹^,²(), 朱军¹(), 朱庆¹, 李佳洛¹

^1.西南交通大学地球科学与工程学院，四川　成都　611756
^2.测绘科学与地球空间信息技术自然资源部重点实验室，北京　100036

收稿日期:2024-03-29 发布日期:2025-05-30
通讯作者: 朱军 E-mail:vgewilliam@163.com;zhujun@swjtu.edu.cn
作者简介:李维炼（1993—），男，博士，副研究员，研究方向为虚拟地理环境与三维可视化。　E-mail：vgewilliam@163.com
基金资助:
国家重点研发计划(2024YFC3015404);地理信息工程国家重点实验室、测绘科学与地球空间信息技术自然资源部重点实验室联合资助基金(2024-02-09);国家自然科学基金(42271424);中国博士后科学基金特别资助项目(2024T170742);国家资助博士后研究人员计划项目(GZC20232185);城市轨道交通数字化建设与测评技术国家工程研究中心开放课题基金(2024实验研委015号)

A 3D modelling method for temperature field of mountain bridges coupled with numerical simulation and spatio-temporal interpolation fusion

Weilian LI¹^,²(), Jun ZHU¹(), Qing ZHU¹, Jialuo LI¹

^1.Faculty of Geosciences and Engineering, Southwest Jiaotong University, Chengdu 611756, China
^2.Key Laboratory of Surveying and Mapping Science and Geospatial Information Technology of MNR, Beijing 100036, China

Received:2024-03-29 Published:2025-05-30
Contact: Jun ZHU E-mail:vgewilliam@163.com;zhujun@swjtu.edu.cn
About author:LI Weilian (1993—), male, PhD, associate researcher, majors in virtual geographical environment and 3D visualization.　E-mail: vgewilliam@163.com
Supported by:
The National Key Research and Development Program of China(2024YFC3015404);The Foundation of State Key Laboratory of Geo-Information Engineering and Key Laboratory of Surveying and Mapping Science and Geospatial Information Technology of MNR, CASM(2024-02-09);The National Natural Science Foundation of China(42271424);The Chinese Postdoctoral Science Foundation(2024T170742);Postdoctoral Fellowship Program of CPSF(GZC20232185);Open Project Fund of National Engineering Research Center of Digital Construction and Evaluation Technology of Urban Rail Transit(2024实验研委015号)

摘要/Abstract

摘要：

温度场建模对复杂山区桥梁建造和精细化管理具有重要意义，但山区温差变化大，现有基于有限元分析的温度场仿真方法存在结果稀疏、时空分布不均匀的问题，难以准确描述桥梁温度变化情况。因此，本文提出一种耦合数值仿真与时空插值融合的山区桥梁温度场三维建模方法。首先，建立山区桥梁日照辐射温度场数值仿真模型；其次，将温度仿真结果与桥梁体素模型进行一致性配准，并采用时空插值融合对山区桥梁温度场建模；然后，基于光线投射实现山区桥梁温度场体绘制高效可视化；最后，选择了四川省甘孜州内一座大型钢桁梁悬索桥作为试验对象开展案例分析。试验结果表明，本文方法能够有效补全温度场仿真结果，精准刻画其时空分布及变化规律，时空插值融合精度与时间插值和空间插值相比，分别提升了21.11%和7.38%，可视化帧率较体绘制优化前提升了36.4%，能够为后续数字孪生驱动的山区桥梁智能建造与精细化管理提供关键数据支撑，同时对部件级实景三维环境参量的真实化表达具有重要借鉴意义。

关键词: 山区桥梁, 温度场仿真, 三维建模, 时空插值融合, 体绘制优化

Abstract:

Temperature field modelling is crucial for bridge construction and refined management. However, the temperature difference in mountainous areas varies greatly, and the existing temperature field simulation methods based on finite element analysis face challenges due to sparse results and inhomogeneous spatio-temporal distributions, making it difficult to describe bridges' temperature changes accurately. This article proposes a 3D modelling method for temperature field of mountain bridges coupled with numerical simulation and spatio-temporal interpolation fusion. First, a numerical simulation model of the solar radiation temperature field for mountainous bridges is established; Second, the temperature simulation results are registered with the bridge voxel model, and spatio-temporal interpolation fusion is adopted to model the temperature field of mountainous bridges. Next, efficient visualization of the temperature field of mountainous bridges is achieved based on ray casting. Finally, a large-scale steel truss cable-stayed bridge in Ganzi, Sichuan province, China, is selected as a case study for experimental analysis. The experimental results show that the proposed method can effectively complement the temperature field simulation results to accurately depict the spatio-temporal distribution and variation patterns of the temperature field of mountainous bridges. The interpolation fusion accuracy was improved by 22.11% and 7.38% compared to spatial and temporal interpolation, respectively. The visualization frame rate has increased by 36.4% through volume rendering, which can provide key data support for subsequent intelligent construction and refined management of mountainous bridges driven by digital twins. Also, it offers crucial reference value for the realistic representation of environmental parameters of the component-level 3D real scene model.

Key words: mountain bridges, temperature field simulation, 3D modelling, spatio-temporal interpolation fusion, volume rendering optimization

中图分类号:

P234.1

李维炼, 朱军, 朱庆, 李佳洛. 耦合数值仿真与时空插值融合的山区桥梁温度场三维建模方法[J]. 测绘学报, 2025, 54(4): 749-759.

Weilian LI, Jun ZHU, Qing ZHU, Jialuo LI. A 3D modelling method for temperature field of mountain bridges coupled with numerical simulation and spatio-temporal interpolation fusion[J]. Acta Geodaetica et Cartographica Sinica, 2025, 54(4): 749-759.

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模型	最高温度/℃	平均最高温度/℃	温差/℃
左岸桥塔	47.75	27.00	20.75
右岸桥塔	44.42	29.03	15.39
钢桁梁单元	65.16	37.41	27.75

方法	左岸桥塔	右岸桥塔	钢桁梁单元
时空插值融合	0.004 97	0.005 24	0.004 98
时间插值	0.007 51	0.006 13	0.005 86
空间插值	0.005 41	0.005 68	0.005 31

耦合数值仿真与时空插值融合的山区桥梁温度场三维建模方法

A 3D modelling method for temperature field of mountain bridges coupled with numerical simulation and spatio-temporal interpolation fusion

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