| 摘要 |
A building construction and method which utilizes columns and precast concrete, generally rectangular, horizontal floor slabs. A first set of columns is erected at the building site and post-tensioned. Then the horizontal slabs are lifted up and positioned with the corners thereof resting on the upper ends of the columns. In the preferred embodiment, each slab has a vertically extending pin secured to the slab at each corner. After the slabs are positioned on the columns, a locking ring is dropped over the pins with the upper edge of the ring extending above the upper horizontal surface of the slabs. A second series of columns is erected in vertical alignment with the previously erected and post-tensioned columns. Each column in the second series rests on the upper edge of the corresponding locking ring. This arrangement provides essentially a point support for the column which permits very easy vertical alignment of the column. Once the column has been aligned, the space between the bottom of the column and the upper surface of the horizontal slabs is dry packed. After the dry pack has set, the second series of columns is post-tensioned before receiving the next series of horizontal floor slabs. The resulting connection between the column and slabs provides a "semi-rigid" connection which is suitable for use in buildings that are constructed in earthquake zones.
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