科研之友
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摘要
Thin shells made of a new material named composite structural insulated panels were presented in this paper. Traditional concrete thin shells have the advantages of beautiful geometrical appearances and efficient structural shapes, but many shortcomings including the labor intensive and time consuming limit their applications. Composite structural insulated panels, consisting of E-glass/polypropylene laminates as face sheets and expanded polystyrene foam as core, have the potential to remedy the drawbacks of traditional concrete thin shells because of their high strength-to-weight ratio, excellent thermomechanical properties, and superior corrosion resistance. The new composite structural insulated panels thin shells were investigated in this paper comparing with traditional concrete thin shells. The static analysis results show the maximum von-Mises stress of composite structural insulated panels thin shells is 31.67% smaller than that of concrete thin shells. And results of Eigen-value buckling analysis and geometrical nonlinear analysis demonstrate that the composite structural insulated panels thin shells can bear larger nonlinear buckling load excluding its self-weight than concrete thin shells. Moreover, by modal analysis and time history analysis it can be obtained that composite structural insulated panel thin shells have better dynamic performances as the maximum Von-Mises stress is 48.2% less than that of the concrete thin shell under earthquake load. In addition to the excellent bearing capacities the composite structural insulated panel thin shells have the advantages of light weight, easy construction, time saving, low cost, thermal insulation, corrosion resistance, and fire retardant. This research confirms that the composite structural insulated panel thin shells are applicable and competitive. Finally, the connection, supports, and construction steps of the composite structural insulated panel thin shell were studied.
- 出版日期2014-11
- 单位河南大学
