钢筋混凝土筒中筒结构裙深梁受力分析与设计

Discussion for Design and Analysis of Spandrel Deep Beams of Reinforced Concrete Tube in Tube Structure

通过对钢筋混凝土筒中筒结构概念设计的探讨及裙深梁与普通深梁的对比分析,指出了高层建筑混凝土结构技术规程中相关规定的不合理之处;指出了钢筋混凝土筒体结构裙深梁主要承受节点荷载不同于普通深梁的节间荷载,且其截面应变基本符合平截面假定;最后还提出了对筒中筒裙深梁设计的建议.

The concept design was discussed in detail for tube in the tube structure of reinforced concrete. The contrastive analysis was advanced between the spandrel deep beams and common deep beams. The interrelated irrational viewpoints were pointed out for ＂Technical specification for concrete structures of tall building （JGJ 3-2002）＂. Spandrel deep beams were mainly subjected joints loads, not loads between the joints. The normal ＂plane sections remain plane＂ assumption could be well met with. Some useful conclusions and suggestions were drawn for design of spandrel deep beams of reinforced concrete tube in tube structure.