Grille beam structure construction method for semiconductor factory

Abstract

A grille beam structure construction method for a semiconductor factory is configured to perform construction of grille beams without installation of a separate beam mounting the grille beams and to simplify a joint between the grille beams by using studs for mounting of the grille beams and by integrating grille beam members to each other by bolt-fastening. The method includes installing columns, installing studs between the columns at predetermined intervals longitudinally and transversally, mounting grille beams above the columns and the studs, wherein each of the grille beams includes an rectangular-frame-shaped edge beam and the edge beam has a plurality of fastening holes, and matching the fastening holes between the grille beams and inserting bolts into the fastening holes, thereby integrating the grille beam.

What is claimed is: 
     
         1 . A grille beam structure construction method for a semiconductor factory, the method comprising:
 installing columns;   installing studs between one of the columns and another column at predetermined intervals in longitudinal and transverse directions;   mounting grille beams, above the columns and the studs, wherein an rectangular-frame-shaped edge beam is arranged and transverse members and longitudinal members intersect with each other to be grid-arranged in the edge beam and the edge beam has a plurality of fastening holes penetrating horizontally therethrough; and   matching the fastening holes between the grille beams to each other and inserting bolts into the fastening holes, thereby integrating the grille beams with each other.   
     
     
         2 . The method of  claim 1 , wherein the grille beams maintain a space equal to or longer than a predetermined distance therebetween, and a non-shrinkage mortar is filled into the space. 
     
     
         3 . The method of  claim 2 , wherein a backup member is fitted into a lower end of the space where the grille beams are in contact with each other and a calking material is used therein for sealing of the space. 
     
     
         4 . The method of  claim 1 , wherein a filling groove is formed on a surface of the edge beam of each of the grille beams, the surface having the fastening holes, from an upper portion that is located at a predetermined height above a lower end to an upper end of the surface, and
 after the fastening of the bolts between the grille beams, a non-shrinkage mortar is filled into the filling groove.   
     
     
         5 . The method of  claim 1 , wherein a bolt head seating groove is formed on an inner surface of the edge beam while being recessed inward, the inner surface having each of the fastening holes, so that a bolt head of each of the bolts is prevented from protruding outward after the fastening of the bolts. 
     
     
         6 . The method of  claim 1 , wherein an inner corner of the edge beam of each of the grille beams mounted on the studs has an inner protrusion part so as to cover a corner of each of the studs completely. 
     
     
         7 . The method of  claim 1 , wherein an outer surface of the edge beam of each of the grille beams is treated into a rough surface so that a friction force between the grille beams increases when the grille beams are joined to each other. 
     
     
         8 . The method of  claim 1 , wherein each of the studs comprises a dowel bar such that the dowel bar protrudes upward to a predetermined length,
 each of the grille beams has a through hole at a portion where the grill beam is mounted on each of the studs, the through hole is formed by vertically penetrating through a location corresponding to a location of the dowel bar, and the grille beam is mounted so that the dowel bar is inserted into the through hole, and then   a non-shrinkage mortar is filled into the through hole.   
     
     
         9 . The method of  claim 8 , wherein the stud has a recessed groove, and the recessed groove is formed on an upper surface comprising the dowel bar to a predetermined depth, and
 the non-shrinkage mortar is filled into both the through hole and the recessed groove at the same time.   
     
     
         10 . The method of  claim 8 , wherein a coupler connection groove is formed on an upper surface of the edge beam, the upper surface having the through hole, by cutting the upper surface to a predetermined depth, so that an end of an upper reinforcing bar embedded in each of the grille beams protrudes toward the coupler connection groove to a predetermined length, and
 a cast-in-place fastening reinforcing bar is located between upper reinforcing bars of adjacent grille beams among the grille beams, and opposite ends of the cast-in-place fastening reinforcing bar are fastened to respective ends of the opposite upper reinforcing bars by using couplers, and then   the non-shrinkage mortar is filled into the coupler connection groove.