Stability performance analysis for a new type assembled plastic greenhouse

A new type of double-layer plastic greenhouse was designed and analyzed, which can effectively reduce the displacement of arch, and increases the overall structural stability of arching in different direction. Using three-dimensional modeling software, the mechanical model of outside shed is built, and the stability is accurately analyzed by finite element analysis software. Calculation results show that maximum bending stress of the designed structure were 56.609MPa and 16.959Mpa under snow load and wind load individual conditions, furthermore, the total displacement are 4.4377mm and 2.0547mm respectively, which shown good stability of the designed plastic greenhouse. The new type resolves the poor structural stability problems of the traditional greenhouses, and reduces the errors caused by only single-arch analysis in the past. And further, it´s also provides the necessary basis to achieve the optimization and improvement of the whole structural of plastic greenhouse.