Research on the Design of Optimization for Greenhouse Structure
|School||Shenyang Agricultural University|
|Course||Agricultural Soil and Water Engineering|
|Keywords||solar greenhouse mechanics analysis PKPM optimization of structure|
This paper expounded the necessity and importance of optimization of solar greenhouse. It is based on the standards of China and abroad greenhouse, the present situation that multi-spans greenhouse developing in China and the special condition of Liaoning province. Systematic theoretical analysis and approach are completed with regard to the primary factors and idiographic methods about the optimum structural design of solar greenhouse.Proceeding from the point of structural internal force, using methods that are widely used to civil architectural engineer, it is the first time to optimize the structure of solar greenhouse. A structural shape which has a rational internal force statement is selected from some of the common structural shapes of greenhouse. According to the principle of "first whole, then part", solar greenhouse structural design should deal with the relations of whole and part, attach importance to the determination of structure about whole project,structure and component design, in order to ensure solar greenhouse have high light transmission, low heat consumption, sufficient ventilation efficiency, adequate Structural strength, low cost of construction and circulate cost.According to the mechanics theory and constructional standard, the loading of Solar greenhouse is established, and the calculative model was calculated by PKPM finite eiement analysis software. Discuss the general process of structural optimization, and define the ordinary method on the basis of particularity of optimization of greenhouse. The structure of greenhouse is optimized by the function in the optimizing toolbox of PKPM. Validates the structure optimized, and the result indicate that the quantity of the house is decreased and structure optimized has full intensity and stability after optimized.A method for analyzing solar greenhouse is put forward in my paper. The structure of solar greenhouse is analyzed and optimized, by this method .Finally we can make an optimum design that has a rational internal force and arrangement, economize materials, and is easy to be constructed and popularized widely.