Patent ID: 6240700
Filing Date: 2001-06-05
Classification: E02D

Abstract:
A constructing method for underground continuous double-row walls comprising the steps of:1. a first step of constructing guide walls;2. a second step of digging a ditch;3. a third step of checking verticality;4. a fourth step of washing stop plates and removing dirt and mud on the bottom of said ditch;5. a fifth step of constructing a first wall unit of continuous double-row walls; said wall unit having a double-row wall including an upper base plate and a lower base plate located symmetrically, a framework combined between said two base plates and having plural auxiliary frames combined between said upper and said lower base plate, and plural lateral bars passing through said auxiliary frames, plural net members fixed between said auxiliary frames, plural truss-type bars fixed between two of said auxiliary frames, mold plates fixed on an outer side of said wall unit, and concrete poured into said wall unit, which then becomes said single wall unit;6. a sixth step of combining an upper wall unit with a lower wall unit; said upper wall unit and said lower wall unit placed in said ditch, and concrete poured into said upper wall unit; and,7. a seventh step of repeating said second step to said sixth step until all said wall units are finished; whereinsaid continuous walls having each said wall unit stably connected to one another and effective waterproof, and preventing accidents of soil slip and soil mixing in concrete, improving insufficient strength of the reinforcing layer, insufficient bend stress, rupture of the walls, corrosion of steel bars and improper sand mixing in sand, said upper and said lower wall being tightly screwed together stably, thus permitting unlimited depth of construction and easy to control management of construction.