新型后装式密肋空心楼盖弹性阶段变形对比试验研究与分析

Comparative experimental study and analysis on elastic deformation of a new type of post-constructed hollow-ribbed floor

对一种新型后装式密肋空心楼盖的弹性阶段变形进行了对比试验研究,分析了后装式预制底板对新型后装式密肋空心楼盖弹性阶段抗弯刚度的贡献。同时采用查表法和有限元法对新型后装式密肋空心楼盖肋梁的跨中变形进行了分析计算,并将计算结果与试验结果进行对比,验证了新型后装式密肋空心楼盖考虑预制底板弹性阶段抗弯刚度贡献的合理性,并给出了相应建议,可为新型后装式密肋空心楼盖体系的设计和应用提供参考。

A comparative experimental study on the elastic deformation of a new type of post-constructed hollow-ribbed floor was conducted. The elastic flexural stiffness contribution of post-constructed precast slabs on the new type of floor was studied. Look-up table method and finite element method were used to calculate the mid-span deformation of the rib beam of the floor and calculation results were compared with the experimental results to verify the rationality of considering the elastic flexural stiffness contribution of precast slabs on the new type of floor. The corresponding recommendations were given, which can provide reference for the design and application of the new type foot system.