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Journal of Zhejiang University SCIENCE A 1998 Vol.-1 No.-1 P.

http://doi.org/10.1631/jzus.A2300143


Non-uniform thermal behavior of single-layer spherical reticulated shell structures considering time-variant environmental factors: Analysis and design


Author(s):  Wucheng XU, Xiaoqing ZHENG, Xuanhe ZHANG, Zhejie LAI, Yanbin Shen

Affiliation(s):  College of Civil Engineering and Architecture, Zhejiang University, Hangzhou 310058, China; more

Corresponding email(s):   ybshen@zju.edu.cn

Key Words:  Non-uniform temperature field, Non-uniform thermal load, Non-uniform thermal effect, Single-layer spherical reticulated shell, Time-variant environmental factor


Wucheng XU, Xiaoqing ZHENG, Xuanhe ZHANG, Zhejie LAI, Yanbin Shen. Non-uniform thermal behavior of single-layer spherical reticulated shell structures considering time-variant environmental factors: Analysis and design[J]. Journal of Zhejiang University Science A, 1998, -1(-1): .

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author="Wucheng XU, Xiaoqing ZHENG, Xuanhe ZHANG, Zhejie LAI, Yanbin Shen",
journal="Journal of Zhejiang University Science A",
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publisher="Zhejiang University Press & Springer",
doi="10.1631/jzus.A2300143"
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%T Non-uniform thermal behavior of single-layer spherical reticulated shell structures considering time-variant environmental factors: Analysis and design
%A Wucheng XU
%A Xiaoqing ZHENG
%A Xuanhe ZHANG
%A Zhejie LAI
%A Yanbin Shen
%J Journal of Zhejiang University SCIENCE A
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%D 1998
%I Zhejiang University Press & Springer
%DOI 10.1631/jzus.A2300143

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T1 - Non-uniform thermal behavior of single-layer spherical reticulated shell structures considering time-variant environmental factors: Analysis and design
A1 - Wucheng XU
A1 - Xiaoqing ZHENG
A1 - Xuanhe ZHANG
A1 - Zhejie LAI
A1 - Yanbin Shen
J0 - Journal of Zhejiang University Science A
VL - -1
IS - -1
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EP -
%@ 1673-565X
Y1 - 1998
PB - Zhejiang University Press & Springer
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DOI - 10.1631/jzus.A2300143


Abstract: 
Contrary to conventional design methods that assume uniform, slow temperature changes tied to atmospheric conditions, single-layer spherical reticulated shells undergo significant non-uniform, time-variant temperature variations due to dynamic environmental coupling. These differences can affect structural performance and pose safety risks. Here, a systematic numerical method was developed and applied to simulate long-term temperature variations in such a structure under real environmental conditions, revealing its non-uniform distribution characteristics and time-variant regularity. A simplified design method for non-uniform thermal loads, accounting for time-variant environmental factors, was theoretically derived and validated through experiments and simulations. The maximum deviation and mean error rate between calculated and tested results were 6.1 °C and 3.7%, respectively. Calculated temperature fields aligned with simulated ones, with deviations under 6 °C. Using the design method, non-uniform thermal effects of the structure are analyzed. Maximum member stress and nodal displacement under non-uniform thermal loads reached 119.3 MPa and 19.7 mm, representing increases of 167.5% and 169.9% compared to uniform thermal loads. The impacts of healing construction time on non-uniform thermal effects were evaluated, resulting in construction recommendations. The methodologies and conclusions presented here can serve as valuable references for the thermal design, construction, and control of single-layer spherical reticulated shells or similar structures.

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