The earth retaining wall is constructed in the underground rim which converse hitting construction method null

摘要

PURPOSE: To reduce the construction period and the construction pollution in the neighboring area, by rationalizing the construction and deliberately treating the construction materials and saving labors, on constructing an underground structure toy the reverse placing method of concrete. CONSTITUTION: An outer peripheral earth-retaining wall 1 of an underground structure is constructed and intermediate piles 2 are driven to support the base course and the underground structure and the base course is covered after the primary excavation and a suspension type form-unit II composed of form- supports of the upper one floor, beam-forms, and slab-forms 5 is installed on the form-support floor of the upper one floor after the secondary excavation and then reinforcements are arranged and concrete is placed. And after the tertiary excavation has been carried out in just the state the suspension type form-unit H is hung, the form-support floor is installed on the ground corresponding to the lower one floor. And the form-unit H is slid down on the support floor and reinforcements are assembled in the unit H and a hollow steel pipe column C is suspended under the upper beam and concrete is placed. These processes are repeated to construct one floor and a foundation.