PRESTRESSED CONCRETE SLAB PROVIDED WITH SHAPE STEELS AND TEMPORARY INSTALLATION METHOD OF SINGLE/MULTI-SPAN BRIDGE THEREOF

摘要

PURPOSE: A prestressed concrete slab provided with shape steels is provided to enlarge the length of a bridge span to be installed by heightening the bending strength of concrete slab and to prevent a bending crack caused by lengthening a span. CONSTITUTION: The prestressed concrete slab provided with shape steels(10) comprises: many shape steels(10) installed at regular intervals; many tension members(20) installed at regular intervals around a lower flange(12) of the shape steels(10) and anchored on both ends of slab concrete(30) after introducing tensile force by a tension; and slab concrete(30) laid under the shape steels(10), the tension members(20) and reinforcements and cured after placing in a form.