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

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

扫码查看
原文链接
  • NETL
  • NSTL
  • 万方数据
Contrary to conventional design methods that assume uniform and slow temperature changes tied to atmospheric conditions, single-layer spherical reticulated shells undergo significant non-uniform and 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 ℃ and 3.7％, respectively. Calculated temperature fields aligned with simulated ones, with deviations under 6.0 ℃. 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％, respectively, 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.

Non-uniform temperature fieldNon-uniform thermal loadNon-uniform thermal effectSingle-layer spherical reticulated shellTime-variant environmental factor

Wucheng XU、Xiaoqing ZHENG、Xuanhe ZHANG、Zhejie LAI、Yanbin SHEN

展开 >

College of Civil Engineering and Architecture, Zhejiang University, Hangzhou 310058, China

Innovation Center of Yangtze River Delta, Zhejiang University, Jiaxing 314100, China

Zhejiang Provincial Key Laboratory of Space Structures, Zhejiang University, Hangzhou 310058, China

Center for Balance Architecture, Zhejiang University, Hangzhou 310028, China

展开 >

National Natural Science Foundation of ChinaNational Natural Science Foundation of China

5157849152238001

2024

10.1631/jzus.A2300143

浙江大学学报(英文版)(A辑:应用物理和工程)
浙江大学

浙江大学学报(英文版)(A辑:应用物理和工程)

CSTPCD
影响因子：0.556
ISSN：1673-565X
年,卷(期)：2024.25(3)
  • 25