铝合金模板抗弯性能研究与结构优化分析

Study on Flexural Performance and Structural Optimization of Aluminum Alloy Formwork

铝合金模板具有质量轻、强度高、节能环保等优点,在建筑业中对推广绿色施工有重要意义。为了研究铝合金模板在弯矩作用下的受力机理,对设计的模板试件开展了有限元分析,并对边肋高度、加劲肋和背肋数量的影响规律进行了分析。结果表明:在纯弯试验中,边肋、加劲肋、面板承担的弯矩依次减小。边肋首先进入屈服,加劲肋在模板进入屈服后对抗弯起重要作用;增大边肋高度对提高铝合金模板弹性抗弯刚度的经济效益最大;增加加劲肋数量可以同时提高弹性抗弯刚度和弹性变形;在进行铝合金模板结构优化时,应主要通过边肋增大模板的抗弯刚度。

Aluminum alloyformworks have the advantages of light weight,high strength,energy saving and environmental protection,which are of great significance to promote green construction in the construction industry.In order to study the force mechanism of aluminum alloy formworks under bending moment,finite element analysis was carried out on the designed formwork specimens,and the influence law of side rib height,stiffening rib number and back rib number was analyzed.The results show that the bearing bending moment of side rib,stiffening rib and face plate decreases successively in pure bending test.The side rib enters the yield first,and the stiffening rib plays an important role in bending resistance after the formwork enters the yield.Increasing the height of side ribs has the greatest economic benefit for improving the elastic flexural stiffness of aluminum alloy formworks.Increasing the number of stiffening ribs can improve the elastic bending resistance stiffness and elastic deformation at the same time.During the structural optimization of aluminum alloy formworks,the bending resistance stiffness of formworks should be increased mainly by side ribs.