PREFABRICATED REINFORCED-CONCRETE WALL IN GROUND AND METHOD OF ITS ERECTION Russian patent published in 1998 - IPC

FIELD: construction of buried structures of various applications. SUBSTANCE: prefabricated reinforced-concrete wall in ground includes separating members with installed in trench concave sections on side ends and wall members with convex sections on side ends installed between separating members. Separating and wall members are made with embedded weight nuts on upper ends, longitudinal key grooves and recesses for erection support on joined ends. Upper part of separating member has through hole to receive erection support and embedded metal plates are installed in lower part on side ends. Wall member is made in the form of block of variable cross-section in height with opened niches from outer and inner sides and with embedded members. The method for erection of prefabricated reinforced-concrete wall in ground includes excavation of trial trench, erection of separating load-carrying member, working of ground between load-carrying members with use of bentonite mortar, installation of wall members with suspension and transferring load to separating members, mutual fixing of members and filling of recesses. In this case, use is made in mounting device in the form of metal platform on vertical screw supporting jacks. Installed on platform for longitudinal and transverse movement and fixing is adjusting frame with aperture for buried member, saddle-type supports and horizontal screw installing members. Use is also made of mounting suspensions and cross-piece with tie-rods. Final fixing of members is carried out by filling of recesses with solidifying material which is supplied through pressure pipes. EFFECT: reduced labor input; higher quality of erected wall due to higher accuracy of installation of members of prefabricated wall in ground, both, in plan and profile. 5 cl, 25 dwg