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Data-driven methods for predicting the representative temperature of bridge cable based on limited measured data

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成果类型:
期刊论文
作者:
Wang, Fen;Dai, Gong-lian*;He, Chang-lin;Ge, Hao;Rao, Hui-ming
通讯作者:
Dai, Gong-lian;Ge, H
作者机构:
[Wang, Fen] Univ South China, Sch Civil Engn, Hengyang 421001, Peoples R China.
[Ge, Hao; Dai, Gong-lian; He, Chang-lin; Dai, GL] Cent South Univ, Sch Civil Engn, Changsha 410074, Peoples R China.
[Rao, Hui-ming] Southeast Coastal Railway Fujian Co Ltd, Fuzhou 350013, Peoples R China.
通讯机构:
[Ge, H ; Dai, GL] C
Cent South Univ, Sch Civil Engn, Changsha 410074, Peoples R China.
语种:
英文
关键词:
cable-stayed bridges;representative temperature;gradient boosted regression trees (GBRT) method;field test;limited measured data
关键词(中文):
大跨度斜拉桥;温度代表值;梯度决策树方法;现场试验;小样本数据
期刊:
Journal of Central South University .
ISSN:
2095-2899
年:
2024
卷:
31
期:
9
页码:
3168-3186
基金类别:
Project(2017G006-N) supported by the Project of Science and Technology Research and Development Program of China Railway Corporation;
机构署名:
本校为第一机构
院系归属:
土木工程学院
摘要:
Cable-stayed bridges have been widely used in high-speed railway infrastructure. The accurate determination of cable's representative temperatures is vital during the intricate processes of design, construction, and maintenance of cable-stayed bridges. However, the representative temperatures of stayed cables are not specified in the existing design codes. To address this issue, this study investigates the distribution of the cable temperature and determinates its representative temperature. First, an experimental investigation, spanning over a period of one year, was carried out near the brid...
摘要(中文):
大跨度斜拉桥是高铁建设中广泛应用的桥型。在设计、建设和运营维护斜拉桥的过程中,准确预测斜拉索的温度荷载代表值对桥梁结构状态评估至关重要。然而,在当前的设计规范中,并未明确规定不同地区斜拉索的温度荷载代表值。为了解决此问题,本研究深入研究了斜拉索截面温度分布模式,并采用不同的方法对比计算了其温度代表值。首先,在桥址附近开展了长达一年的拉索温度监测试验,获得了大量温度原始数据。通过对测得数据的统计分析,发现斜拉索横截面上的温度呈现出均匀分布,没有明显的温度梯度。然后,基于一年拉索温度实测数据,分别采用蒙特卡洛法、梯度提升决策树(GBRT)方法和单变量线性...

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