Optimization of Structural Configuration and Ridge Height for Large-Span Insulated Plastic Greenhouse Based on Finite Element Analysis

Xiaoxing Dong, Fengzhi Piao, Nanshan Du, Han Dong, Tao Zhang, Yanping Qin, Yaling Li () and Zhixin Guo ()
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Xiaoxing Dong: College of Horticulture, Shanxi Agricultural University, Jinzhong 030810, China
Fengzhi Piao: College of Horticulture, Henan Agricultural University, Zhengzhou 450002, China
Nanshan Du: College of Horticulture, Henan Agricultural University, Zhengzhou 450002, China
Han Dong: College of Horticulture, Henan Agricultural University, Zhengzhou 450002, China
Tao Zhang: College of Horticulture, Henan Agricultural University, Zhengzhou 450002, China
Yanping Qin: College of Horticulture, Henan Agricultural University, Zhengzhou 450002, China
Yaling Li: College of Horticulture, Shanxi Agricultural University, Jinzhong 030810, China
Zhixin Guo: College of Horticulture, Henan Agricultural University, Zhengzhou 450002, China

Agriculture, 2025, vol. 15, issue 13, 1-22

Abstract: The large-span insulated plastic greenhouse is a highly promising horticultural facility. The design parameters and configuration of structural components significantly impact their safety and load-bearing performance. However, current research in this field remains insufficient. In this study, the deformation, stress distribution, and stability of large-span insulated plastic greenhouses with different structural configurations were investigated using the finite element method. Subsequently, the ultimate bearing capacity of large-span insulated plastic greenhouses with varying ridge heights was examined. The research indicated that the greenhouse with a plane truss and double-layer tie rod exhibited the smallest deformation and stress in its members, as well as the highest ultimate load-bearing capacity. The analysis revealed that the installation of double-layer tie rods not only enhanced the collaborative effect of arch frames within the structural calculation unit but also reduced displacement along the Z direction, effectively mitigated the P - ∆ effect, reduced out-of-plane bending stress, and improved the ultimate load-bearing capacity. Ridge height affected the load-bearing capacity of the greenhouse structure. However, a higher ridge height did not necessarily result in a stronger ultimate load-bearing capacity. The greenhouse structure with a ridge height of 5 m demonstrated the maximum ultimate load-bearing capacity, capable of bearing 1.98 times the initial load. This study provides theoretical support for the configuration of structural components of large-span insulated plastic greenhouses and offers a scientific basis for the optimal design of ridge height.

Keywords: greenhouse structure design; finite element; static properties; failure mechanism; ridge height (search for similar items in EconPapers)
JEL-codes: Q1 Q10 Q11 Q12 Q13 Q14 Q15 Q16 Q17 Q18 (search for similar items in EconPapers)
Date: 2025
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