| 摘要 |
A lightweight steel frame foundation plate and a construction method of a lightweight steel frame foundation plate are provided to reduce the quantity of concrete placed by varying the thickness of a foundation where steel columns are to be installed and the thickness of a bottom plate where the load of an upper structure is not directly transferred, to simplify construction progress and to shorten a period of construction by placing concrete for foundation and a bottom plate simultaneously, and to prevent the displacement of anchor bolts caused while placing concrete by fixing anchor bolts strongly. A lightweight steel frame foundation plate(200) includes plural bucket insertion holes formed on the ground(210) where steel columns are to be installed to the appointed depth, buckets(230) laid in the bucket insertion holes to be exposed to the surface of the ground to the appointed height, backfill materials(240) filled in a space between the bucket insertion hole and the bucket, a foundation reinforcement member composed of plural anchor bolts(250), a template(260) and an anchor plate and placed in the bucket, insulating materials(340) placed on a bottom plate(350) circumscribed by the buckets, band iron(370) placed on the edge of the template installed in the bucket and coupled with a template of the adjacent bucket, and a reinforcement steel member(400) such as a wire mesh or a reinforcing bar placed on the bottom plate to prevent cracks in concrete and to increase strength. A construction method of a lightweight steel frame foundation plate comprises the steps of leveling the ground, forming plural bucket insertion holes by digging out the ground where steel columns are to be installed to the appointed depth, laying buckets to the bucket insertion holes and filling up a space between the bucket and the bucket insertion hole with backfill materials, preparing anchor bolts equipped with plural steel plates such as templates located on the upper part and anchor plates located on the lower part, connecting the adjoining templates with band iron, forming an outer form to be located in the outside of the buckets, and to be higher than the top of the bucket and the template and lower than the top of the anchor bolt to make the top of the anchor bolt exposed, and placing concrete in the buckets and the outer form and curing the concrete. |
