CONSTRUCTING METHOD FOR BEAM AND SLAB IN UNDERGROUND BODY CONSTRUCTION WORK

摘要

PURPOSE:To provide a constructing method for beam and slab for an underground body in a reverse driving method, which requires no profession, dispenses with extensive form materials and supports, promote a job for labor-saving and reduces the cost of construction. CONSTITUTION:In a reverse driving method, the ground is excavated up to a lower part a little lower than a beam with the maximum beam formation of a working floor, and paving sand 2 is spread over an excavated surface 1, laying down a backing plate 3 on the surface. Then, a girder, a beam, each of forms 4, 4' and a slab mold form 5 are assembled by a form unit on this backing plate 3, assembling beam reinforcements 8, 8' and a slab reinforcement 9 in each form, and concrete is placed. After the driven concrete is hardened up to the specified strength, the next lower layer is excavated, while the form is dismantled, thus an underground body is constructed.