| 摘要 |
The present invention relates to a Rahmen bridge-shaped underground structure unit block walls and a construction method of an underground structure using block walls, and to a construction method which facilitates the construction of an underground structure, uses precast or prestress members, and has objectives of completing a ground section at the early stage by installing an upper cover plate after building a sidewall member with a makeshift retaining wall and enabling rapid underground construction to be performed by excavating underground and building an underground structure. The construction method of an underground structure using unit blocks according to the present invention comprises: a first step for having unit walls with which steel tunnel supports are combined and which are repeatedly and alternately connected in a symmetrical row, and inserted and disposed in the ground for the upper parts thereof to be on the same level with or protruded from the ground; a second step for having an upper cover plate at the height corresponding to the upper ends of the unit block walls; a third step for attaching ground reinforcing mats to the upper and side parts of the upper cover plate and for covering the upper and side parts of the upper cover plate so that vehicles and humans pass through; a fourth step for excavating earth in between the unit block walls up to the depth enough for the vehicles and humans to pass through between the unit block walls; a fifth step for leveling the ground after removing the earth; a sixth step for arranging the reinforcing materials, which are bent at a proper angle, on top of a lower floor plate; a seventh step for constructing the lower floor plate by integrally attaching the subslab concrete disposed on the leveled ground to the reinforcing materials bent at the sixth step; and an eighth step for reinforcing waterproof function by attaching seal members to the connection part of the unit block walls following the fifth step. |
