Change characteristics of environmental factors on suspension bridge’s solar radiation effects

ZHU Jinsong; CHEN Kexu; MENG Qingling

doi:10.11918/j.issn.0367-6234.201711115

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Change characteristics of environmental factors on suspension bridge’s solar radiation effects

更新时间：2026-10-19

- Change characteristics of environmental factors on suspension bridge’s solar radiation effects
- Vol. 51, Issue 3, Pages: 127-134(2019)
- 作者机构：
  
  1. 天津大学建筑工程学院,天津,300350
  2. 滨海土木工程结构与安全教育部重点实验室(天津大学),天津,300072
- 作者简介：
- 基金信息：
- DOI：10.11918/j.issn.0367-6234.201711115
  CLC： U448.25
- Published：2019
- 稿件说明：
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ZHU Jinsong, CHEN Kexu, MENG Qingling. Change characteristics of environmental factors on suspension bridge’s solar radiation effects[J]. 2019, 51(3): 127-134.
DOI：

ZHU Jinsong, CHEN Kexu, MENG Qingling. Change characteristics of environmental factors on suspension bridge’s solar radiation effects[J]. 2019, 51(3): 127-134. DOI： 10.11918/j.issn.0367-6234.201711115.

摘要

为研究自然环境下悬索桥太阳辐射效应变化规律以及最不利活载效应与环境温度效应的关系

首先建立了某在建大跨度悬索桥精细化模型

然后对太阳辐射效应的环境因素进行参数敏感性分析

同时研究了太阳辐射效应与最不利活载效应的关系. 研究结果表明:悬索桥太阳辐射效应受环境温度影响最大、风速次之. 风速对悬索桥太阳辐射效应的影响呈非线性关系；日序数和纬度对太阳辐射效应影响较小

但太阳辐射效应变化规律与纬度变化规律不一致

受多种环境因素影响. 最不利活载引起的主梁跨中点挠度数值上是热辐射引起最大挠度的2倍

塔顶偏位数值上与热辐射引起的偏位相等. 研究结果可以为悬索桥施工阶段误差分析和健康监测数据的温度影响剔除提供理论依据和技术支撑.

Abstract

This research focuses on the change rules of solar radiation effects and the relationship between most unfavorable live load effect and temperature effect of suspension bridges under natural environment. The fine model of an under-construction long-span suspension bridge was established

the parameter sensitivity analysis of environmental factors of solar radiation effects was carried out

and the relationship between the solar radiation effects and the most unfavorable live load effect was investigated. Results showed that the solar radiation effects of suspension bridge were mainly affected by ambient temperature

followed by the wind speed

the influence of which is nonlinear. Daily ordinal number and latitude had little influence on the solar radiation effects. The change of solar radiation effects was not consistent with that of latitude

but was affected by many environmental factors. The maximum deflection of the main beam caused by the most unfavorable live load was twice the maximum deflection caused by thermal radiation

and the offset of the tower top was equal to that of thermal radiation. These results could provide theoretical basis and technical support for the error analysis of the construction phase of suspension bridges and eliminate the temperature influence of the health monitoring data.

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