Numerical Simulation Analysis of Wind Load on Front Roof of Solar Greenhouse in Xinjiang

【Objective】 The simulation of wind load and its changing trend of front roof of solar greenhouse has the function of predicting and preventing disasters in advance.Wind load simulation can be used to assist the tructural optimization design of front roof and the actual wind load calculation of each enclosure structure. 【Method】 The structure of a solar greenhouse wall insulation quilt, a framework and the like is simplified. anufacturing Model of Sunlight Greenhouse Using UG Software. The difference between the model and air boolean is calculated to obtain the overall model. Importing the whole model into ANSYS ICEM for meshing. The wind pressure of that film unde four conditions is obtain. Then draw the contrast curve of wind pressure change under different conditions through nine curves in Y direction. 【Result】 The wind pressure on the southernmost side of the film is the highest,about1.014×10⁵Pa,the wind pressure on the north side gradually decreases, the minimum wind pressure at the ridge height is about 1.010×10⁵Pa,when there is no thermal insulation quilt and the thermal insulation quilt is fully paved. The wind pressure rises due to the film obstruction of the southernmost wind. The north side is near the top of the greenhouse. The wind speed is fast, so the wind pressure is small. When the thermal insulation quilt is fully rolled and half rolled, the wind pressure on the southernmost side is highest, about 1.014×10⁵Pa,the wind pressure decreases in the north, the wind pressure variation of the overall roof changes small, about 1.013×10⁵Pa.Just when the thermal insulation quilt is half rolled, the abrupt changes in wind pressure is 1.012×10⁵Pa at the place where the thermal insulation quilt is rolled. 【Conclusion】 In all four cases, the wind pressure on the south side is relatively large, with little difference. However, a full or half roll of the thermal insulation quilt to the north will cause a rise in the wind pressure of the film, especially a sudden rise at the top. Therefore, the thermal insulation quilt can be completely paved to prevent wind. The high wind pressure on the south side indicates that the performance of the arched section of the front roof steel skeleton is crucial to the structural stability and safety of the greenhouse. The design and construction should focus on calculation and verification of steel skeleton performance.This study provides a theoretical basis for the optimal design of solar greenhouse structure and wind disaster reduction.