Improving Seismic Resistance of Flat-Plate Buildings

平板结构是中低层住宅或办公建筑中应用最广泛的建筑形式之一。最近发生的地震，如亚美尼亚地震(1988年)和墨西哥地震(1985年)，都证明了这类建筑容易受到严重破坏。在没有独立的抗侧向荷载体系或使其失效的情况下，这种建筑物在地震中的生存完全取决于板柱连接的性能。在节点区域使用高强混凝土和纤维混凝土或增加剪力帽可以提高板柱节点的抗剪强度，而不需要求助于其他相对昂贵的替代方案。八个二分之一比例的两舱平板组件将在模拟地震类型的荷载下进行测试，以调查这种替代方案在提高平板建筑抗震能力方面的前景。这项研究应该为提高平板建筑的安全性提供基础，包括使用高强度和纤维混凝土，并进一步改进板柱节点不平衡弯矩传递机制的分析模型。

Flat-plate is one of the most widely used forms of construction among the low-to-medium-rise residential or office buildings. Recent earthquakes such as the Armenian (1988) and Mexican (1985) earthquakes have proven the susceptibility of such buildings to severe damage. In situations where an independent lateral load resisting system is not present or is rendered ineffective, the survival of such buildings in the event of an earthquake depends entirely on the performance of slab-to- column connections. The use of high strength concrete and fiber reinforced concrete in the connection region or the addition of shear caps can possibly improve the shear strength of slab-column connections without resorting to other relatively more expensive alternatives. Eight one-half scale two-bay flat- plate subassemblies will be tested under simulated earthquake- type loading to investigate the promise of such alternatives in improving the seismic resistance of flat-plate buildings. This study should provide the basis for improved safety of flat-plate buildings to include the use of high strength and fiber reinforced concrete and for further improvements in analytical modelling of the unbalanced moment transfer mechanism at the slab-column connections.