Analysis of Tensioning Time for Composite Beam-String Structures Considering Solar Radiation Effects

ZHANG Liangkai; WANG Changhong; YAN Renzhang; PENG Junxi; WEN Qiang

doi:10.3724/j.gyjzG23122503

Volume 55 Issue 5

May 2025

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Article Navigation > INDUSTRIAL CONSTRUCTION > 2025 > 55(5): 132-142

ZHANG Liangkai, WANG Changhong, YAN Renzhang, PENG Junxi, WEN Qiang. Analysis of Tensioning Time for Composite Beam-String Structures Considering Solar Radiation Effects[J]. INDUSTRIAL CONSTRUCTION, 2025, 55(5): 132-142. doi: 10.3724/j.gyjzG23122503

Citation:

ZHANG Liangkai, WANG Changhong, YAN Renzhang, PENG Junxi, WEN Qiang. Analysis of Tensioning Time for Composite Beam-String Structures Considering Solar Radiation Effects[J]. INDUSTRIAL CONSTRUCTION, 2025, 55(5): 132-142. doi: 10.3724/j.gyjzG23122503

Citation:

ZHANG Liangkai, WANG Changhong, YAN Renzhang, PENG Junxi, WEN Qiang. Analysis of Tensioning Time for Composite Beam-String Structures Considering Solar Radiation Effects[J]. INDUSTRIAL CONSTRUCTION, 2025, 55(5): 132-142. doi: 10.3724/j.gyjzG23122503

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Analysis of Tensioning Time for Composite Beam-String Structures Considering Solar Radiation Effects

doi: 10.3724/j.gyjzG23122503

1. The 9th Engineering Co., Ltd., of CCCC First Highway Engineering Co., Ltd., Guangzhou 510000, China;
2. School of Civil Engineering, Chongqing Jiaotong University, Chongqing 400074, China

Received Date: 2023-12-25
Available Online: 2025-07-15

Abstract

Abstract

During the tensioning construction process， the composite beam-string structure is fully exposed to solar radiation. At the moment of structural forming through tensioning， its temperature exceeds ambient levels while demonstrating obvious non-uniformity. In order to clarify the influence of non-uniform temperature effects on the structure’s mechanical properties， a simplified simulation method for non-uniform temperature loads was proposed based on a practical project， and the finite element software ANSYS was used to numerically simulate the structure’s mechanical properties at different tensioning stages under solar exposure. First， field tests and refined numerical simulations were conducted to obtain the temperature distribution patterns along both transverse and longitudinal directions of the top chord composite beam. A temperature gradient model was subsequently established for critical beam sections at various stages. For efficient computation of the beam-string structure considering global non-uniform temperature effects， a quartered beam element simulation method was proposed. Using the finite element software ANSYS， the influence of initial non-uniform temperature fields at different tensioning stages on the structure’s mechanical performance during service life was simulated， and the magnitudes of all mechanical property indicators change in a V shape with the tensioning time. Through a comparison， the optimal tensioning opportunity for the structure was 13：00.
- composite beam-string structure,
- non-uniform temperature under solar radiation,
- tensioning time,
- mechanical property

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References(19)

References

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