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对轻质椭圆形抛物面加劲钢板屈曲性能进行数值分析,这种钢板一般作为轻质混凝土桥面、人行道和楼板的大跨度模板应用。双曲率钢板模板可能实现无需脚手架或其他支撑支架便可浇筑大跨度的混凝土构件。当工地地面空间不足以支撑脚手架,或者施工时为保证交通,在地面无法安装脚手架时,这种大跨度模板就显得尤为重要。通过在壳表面施加均布压力来模拟湿混凝土的效应,同时硬化混凝土的自重,通过在壳的表面施加均布荷载来模拟。结果显示,板的上升和面积比对模板的屈曲强度影响很大。同时进行了初步的可行性分析。
The numerical analysis of the buckling behavior of lightweight elliptical parabolic stiffening steel plate is generally used as a large-span template for lightweight concrete decks, sidewalks and slabs. The double-curvature sheet template may allow for the construction of long-span concrete structures without the need for scaffolding or other support brackets. Such a large-span formwork is particularly important when there is insufficient floor space on the work site to support the scaffolding or to ensure traffic during construction, when scaffolding can not be installed on the ground. The effect of wet concrete is simulated by applying a uniform pressure on the surface of the shell while the self-weight of the concrete is hardened by applying a uniform load on the surface of the shell. The results show that the rise and area ratio of the plate have a great influence on the buckling strength of the template. At the same time a preliminary feasibility analysis.