FIELD: process engineering.
SUBSTANCE: invention relates to thermal moulds for production of precast reinforced concrete construction structures, In compliance with first version, thermal mould for production of linear prestressed reinforced concrete structures, say columns and crossbars, consists in its cross-section of prestressed structural compartment. Independent thermal pan with inlet and discharge pipes for formwork and concrete heat processing is installed above said pan via heat insulation. Thermal mould end faces are provided with fixed structural first and second thrusts secured to structural thrust ends. Moving structural thrust is mounted behind the second structural thrust with its drive arranged there between. Fixed structural first and second thrusts have slots for prestressing reinforcement at three levels over the thrust height. First level is located at upper part, second one in mid part and third one at bottom part, at the lowest section of structural compartment. Moving structural thrust slots for prestressing reinforcement are located only at two levels: at upper and mid levels, tight above the level of thermal mould and are intended for making of prestressed reinforced concrete structures while slots of the lower level serve to accommodate prestressing reinforcement of structural compartment for creation therein of prestress. For making of linear prestressed reinforced concrete structures, say, columns and crossbars, all structural thrusts both fixed and moving feature cross-section equal in height and width. For making of linear reinforced concrete structures, say, crossbars, all structural thrusts feature cross-section varying in height. This is realized where cross-section is smaller depth is located in slots of upper level of structural thrusts for accommodation of prestressing reinforcement of crossbar compressed zone. Cross-section larger in depth is located at slot of mid level thrusts accommodating prestressing reinforcement bars of crossbar stretched zone and those of structural compartment. In compliance with second version, thermal mould for production of flat prestressed reinforced concrete structures, said flat frames, consists of mutually perpendicular columns and crossbars jointed at stiff intersection points to make in horizontal plane one- and multispan, one- and multistory flat frames. Columns and crossbars of aid frames are arranged in thermal mould at position turned through 90 degrees since vertical flat frames are made in horizontal state. To make columns of flat frames, thermal mould structural fixed and moving thrusts feature constant cross-section in height and width of the thrust. To make flat frame crossbars, structural thrusts feature cross-section depth varying in width where smaller depth is located in crossbar compressed zone turned through 90 degrees in the area of crossbar stretched zone prestressing reinforcement and cross-section of fixed structural thrusts at structural compartment lower level features identical value in width and height. To make angular and t-shape elements of the frames this thermal mould incorporates extra inserts to be fitted in required sections of crossbars and columns.
EFFECT: perfected design.
2 cl, 13 dwg
