METHOD FOR SEPARATE CAST-IN-PLACE BUILDING STRUCTURE ERECTION Russian patent published in 2005 - IPC

FIELD: construction, particularly for erecting frame or frameless cast-in-place structures, particularly to construct low-story buildings and buildings in the case of limited capacity of building equipment usage.

SUBSTANCE: method involves forming cavity by fixing retained form members with the use of knock-down form so that retained form members are arranged on inner surfaces of knock-down form panels; strutting off opposite retained form members by stay rods having stops; connecting opposite knock-down form panels with each other with the use of fastening members which pass through members of retained and knock-down forms; pouring concrete mix in layers; grouting stay rods in wall and demounting knock-down form after concrete layer hardening. To perform above method at least 4 rows of orifices are formed in knock-down form panels, retained form panels comprise at least 2 rows of orifices formed so that the orifices are located in apexes of rectangles identical for forms of both types and for any two pairs of the nearest orifices of adjacent rows. Horizontal row of knock-down form panels is installed on lower hardened wall layer or on a base and retained form is installed along with air-tightly connecting adjacent members thereof. Then retained form orifices are coaxially aligned with knock-down form ones. Stay rods formed of heat-insulating material and having stop washers on stay rod ends and threaded orifices are installed in the cavities. The threaded orifices are coaxially aligned with knock-down form ones. Threaded sections of fastening members are inserted in end threaded orifices of stay bars through pressing washers and orifices of the forms. Guiding sections are simultaneously seated in knock-down form panel orifices. Pressing washers are located from outer surfaces of knock-down form panels. Both forms are secured by screwing in fastening members and thereby pressing knock-down form panels to retained form members over the full surface thereof along with pressing retained form members to limiting washers. After being demounted knock-down form is moved upwards and new row of form panels is mounted by connecting lower edges thereof to wall with the use of at least two rows of grouted stay rods and fastening members. After that cavities inside upper part of knock-down form are formed once again for pouring next concrete mix portion.

EFFECT: possibility to utilize only friction force appeared due to pressing retained form members to stay rods over their surface by knock-down form panels for retained form fastening during building structure erection; possibility to regulate above force and to substitute some members for simple and light-weight ones (knock-down form), elimination of other members (post), prevention of cold bridges appearance, optimization of building process due to structure member reuse.

12 cl, 17 dwg