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与多层建筑不同,连续超长高层建筑中分布于两侧的剪力墙对楼盖形成很大的侧向约束,可能产生显著的温度应力。以一工程实例探讨了连续超长高层混凝土结构的温度应力问题。分析表明:由于地下室顶板的约束作用,在降温工况下,低层次楼盖受拉效应显著,温度应力由下向上递减;且由于结构两端的剪力墙产生向内的变形和相应的转角,较高楼层的楼盖产生了一定程度的压应力。相应地,在升温工况下,上部楼层的楼盖可能产生拉应力。
Unlike multi-storey buildings, the shear walls distributed on both sides of a long and continuous high-rise building form a large lateral constraint on the floor, which may result in significant temperature stress. With an engineering example, the temperature stress of continuous ultra-long high-rise concrete structures is discussed. The analysis shows that due to the constraining effect of the basement ceiling, under low temperature conditions, the tension effect of the low-rise building is significant and the temperature stress decreases from the bottom to the top. Due to the inward deformation and corresponding cornering of the shear wall at both ends of the structure, The floor of the higher floor creates a degree of compressive stress. Accordingly, floor coverings on the upper floors may generate tensile stress under warming conditions.