Field Monitoring and Numerical Analysis of Thermal Behavior of Large Span Steel Structures Under Solar Radiation

Zhao, Zhongwei; Liu, Hongbo; Chen, Zhihua

doi:10.18057/ijasc.2017.13.3.1

Cited by 9 publications

(10 citation statements)

References 13 publications

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“…During the construction period, space structures are directly exposed to solar radiation with a significant structural temperature difference. Based on long-term monitoring data, the maximum temperature of the steel lattice structure of the Yujiabu Railway Station Building under strong solar radiation is more than 18 • C [26,27]. There are great differences between the solar transmittance of different roof materials, such as glass, light steel and ETFE membrane [28].…”

Section: Space Structuresmentioning

confidence: 99%

“…The test contents when testing temperature effect include stress, displacement, cable force, etc. ; stress can be measured by strain gauges [27] or vibrating wire sensors [30], displacement can be obtained using displacement transducers [60], GPS receivers [61] or 3D laser scanning [32], and cable force can be directly monitored by tension sensors [23] or calculated from displacement [63].…”

Section: Experimental Testmentioning

confidence: 99%

“…Based on comparative analysis of the test data, it was shown that the time-variance laws of girder temperature and girder deflection were similar, and there was a basically linear relationship between the temperature field and the deflection of the box girder at night, indicating that the girder deflection was greatly affected by the girder temperature. This method of determining the layout of measuring points to measure temperature effect was also applied in the studies of Chen [25], Zhao [27], Wang [45], etc.…”

Section: Experimental Testmentioning

confidence: 99%

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Non-Uniform Temperature Fields and Effects of Steel Structures: Review and Outlook

Chen

Qian

2020

Applied Sciences

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Due to the dynamic coupling effects of solar radiation, longwave radiation, convective heat transfer, shadows, and other factors, the temperature field and effect of steel structures are significantly non-uniform, differing from traditional concepts that regard the temperature variation of steel structures as a slow and uniform progress. This difference can hinder the correct understanding of the thermal behavior of steel structures and ignore some potential safety hazards. This paper provides a review of the studies for the non-uniform temperature field and effect of steel structures, and presents some outlooks on future developments on the basis of the current research situation. A summary of research on the temperature field and effect of space structures, bridges and radio telescopes initially establishes the basic cognitive framework for this field. In addition, then, the basic principles of the numerical simulation of temperature fields are introduced through heat transfer mechanism, and the experimental test methods of temperature and its effects are described based on typical test cases. Finally, with a view to the future, some suggestions and opinions are provided in consideration of deficiencies in the current research status. This paper hopes to provide some valuable references for future research in this field through research summary, method introduction and outlook.

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Section: Space Structuresmentioning

confidence: 99%

Section: Experimental Testmentioning

confidence: 99%

Section: Experimental Testmentioning

confidence: 99%

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Non-Uniform Temperature Fields and Effects of Steel Structures: Review and Outlook

Chen

Qian

2020

Applied Sciences

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“…Westgate et al [24] studied the mechanisms of solar radiation-induced behavior of Tamar Bridge through monitoring data and FEM. Zhao et al [25] monitored the temperature field of a steel latticed shell structure and found that solar radiation has little effect on this kind of structure. Kim et al [26] developed a method to predict the 3D temperature distribution of different curved steel box girder bridges under solar radiation.…”

Section: Introductionmentioning

confidence: 99%

Numerical Study on Temperature Distribution of Steel Truss Aqueducts under Solar Radiation

Chang

2021

Applied Sciences

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Aqueduct, one kind of bridge structure overpassing a long space, is a significant structure for water delivery for the purpose of agricultural or domestic usage. Aqueduct has quite different loads from other forms of bridges, of which temperature effects due to the environment temperature change, such as seasonal weather or radiation from sunshine, are of great importance. With water flowing inside, the temperature boundary of aqueducts, especially for steel aqueducts, is much more complicated, and relevant researches are limited. In this paper, a 3D Finite Element Method (FEM) simulation process is presented to analyze temperature distribution on the cross-section of a new-type steel truss aqueduct, which belongs to the Water Transfer Project from Yangtze River to Huai River in China. ASHRAE clear-sky model is used to calculate the solar-radiation variation, including direct radiation, diffuse sky radiation, and ground reflected radiation on steel surfaces. The time-dependent sunshine radiation angle of incidence and shielding effect of steel trusses are considered. The water inside the aqueduct is also included in this model, which significantly influences the temperatures of the inner surfaces of the aqueduct. Several temperature distributions under critical conditions of winter and summer are shown in this study, and results of the empty aqueduct under the same circumstances are also provided as a comparison. The effects of wind speed, geographic latitude, and direction of the aqueduct are examined. The conclusions and approach provided by this study could serve as significant references for thermal design and control of similar steel truss aqueducts.

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“…Qian et al [15] and Liu et al [16] carried out related studies on the numerical model and the simplified analysis methods of the temperature effects of steel members under solar radiation. Liu et al [17][18][19][20] studied the distribution of residual stress and the deformation of a spatial structure under construction. Through the field measurement and simulation, the adverse effects of the non-uniform temperature effect were demonstrated.…”

Section: Introductionmentioning

confidence: 99%

Non-Uniform Temperature Field of Spatial Grid Structure under Construction Induced by Solar Radiation

et al. 2020

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The temperature of spatial structures under construction can have a significant non-uniform distribution induced by intense solar radiation. This temperature distribution affects the component assembly and results in closure difficulties, potentially causing safety hazards. A spatial grid structure model was designed and subjected to temperature field test under sunlight to study the temperature distribution of the structure and for comparison with numerical simulation methods. The distribution characteristics and the time-varying laws were analyzed based on the test data. Then, the ray-casting algorithm was introduced to analyze the shadow influence between members, so that the temperature distribution of the model was simulated accurately, which was verified by the test data. The results show that the spatial grid structure had an obvious non-uniform temperature distribution, with a maximum temperature rise of 16 °C when compared with ambient temperature and a maximum temperature difference between members of 11 °C. The variation laws were gained both from the test and the numerical simulation. The numerical simulation method proposed herein can be used to calculate the shadow distribution and the temperature field of the structure effectively. The research methods and conclusions can provide valuable references for thermal design, monitoring, and control of spatial grid structures.

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Field Monitoring and Numerical Analysis of Thermal Behavior of Large Span Steel Structures Under Solar Radiation

Cited by 9 publications

References 13 publications

Non-Uniform Temperature Fields and Effects of Steel Structures: Review and Outlook

Non-Uniform Temperature Fields and Effects of Steel Structures: Review and Outlook

Numerical Study on Temperature Distribution of Steel Truss Aqueducts under Solar Radiation

Non-Uniform Temperature Field of Spatial Grid Structure under Construction Induced by Solar Radiation

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