Prefabricated frame

Abstract

Disclosed herewith a prefabricated frame, including a column ( 1 ), a main beam ( 2 ), a secondary beam ( 3 ), and a floor ( 5 ). The main beam ( 2 ) and the secondary beam ( 3 ) are both prefabricated members, and provided with exposed reserve reinforcing bars. The floor ( 5 ) is a laminated plate having a prefabricated slab ( 51 ) at a lower portion thereof. The prefabricated slab ( 51 ), the main beam ( 2 ), and the secondary beam ( 3 ) are connected together through in-situ casting concrete on respective top portions thereof. The column ( 1 ) is a prefabricated column, which has exposed reserve reinforcing bars at a top thereof, and a to-be-cast structure at a bottom thereof for connection with a lower building structure, which has exposed reinforcing bars inserted into the to-be-cast structure. The connection between the column ( 1 ) and the lower building structure is achieved by casting in-situ concrete in the to-be-cast structure ( 12 ).

1 . A prefabricated frame, comprising at least one column ( 1 ), at least one main beam ( 2 ) connected to the column ( 1 ), at least one secondary beam ( 3 ) connected to the main beam ( 2 ), and a floor ( 5 ),
 wherein the column ( 1 ), the main beam ( 2 ) and the secondary beam ( 3 ) are all prefabricated members, and the main beam ( 2 ) and the secondary beam ( 3 ) are both provided with, on respective top portions thereof, exposed reserve reinforcing bars, and reinforcing bars for cast-in-situ parts,   wherein the floor ( 5 ) is a laminated plate having a prefabricated slab ( 51 ) at a lower portion thereof, and the prefabricated slab ( 51 ), the main beam ( 2 ), and the secondary beam ( 3 ) are connected together by means of in-situ casting concrete on respective top portions thereof,   wherein the column ( 1 ) is a prefabricated column having exposed reserve reinforcing bars ( 11 ) at a top thereof and a to-be-cast structure ( 12 ) at a bottom thereof, the to-be-cast structure ( 12 ) being provided therein with reserve connecting bars, and   wherein the to-be-cast structure ( 12 ) is used for connection with a lower building structure, which has exposed reinforcing bars that are located under the column and inserted into the to-be-cast structure ( 12 ), a connection between the column ( 1 ) and the lower building structure being achieved by casting in-situ concrete in the to-be-cast structure ( 12 ).   
     
     
         2 . The prefabricated frame according to  claim 1 , wherein the column ( 1 ) is recessed inwardly at one or more lower sidewalls thereof to form the to-be-cast structure ( 12 ). 
     
     
         3 . The prefabricated frame according to  claim 2 , wherein the exposed reinforcing bars of the lower building structure are overlapped and bundled with the reserve connecting bars of the to-be-cast structure ( 12 ), so that the column ( 1 ) and the lower building structure are connected with each other through establishing a template outside of the to-be-cast structure ( 12 ) and pouring concrete therewith. 
     
     
         4 . The prefabricated frame according to  claim 1 , wherein the to-be-cast structure ( 12 ) includes a plurality of sleeves embedded in a bottom of the column ( 1 ), each sleeve being provided with a grouting passage and a slurry discharging passage, both passages having respective openings exposed on a sidewall of the column ( 1 ), and the reserve connecting bars of the to-be-cast structure ( 12 ) are vertical reinforcing bars, which are inserted into the sleeves from upper opening ends of the sleeves. 
     
     
         5 . The prefabricated frame according to  claim 4 , wherein the grouting passage and the slurry discharging passage are arranged at a lower end and an upper end of the sleeve, respectively. 
     
     
         6 . The prefabricated frame according to  claim 4 , wherein the exposed reinforcing bars of the lower building structure are inserted into the sleeves from lower opening ends of the sleeves, and the column ( 1 ) is integrally connected with the lower building structure by pouring concrete into the sleeves through the grouting passage, with excessive concrete being discharged from the slurry discharging passage. 
     
     
         7 . The prefabricated frame according to  claim 1 , wherein the exposed reserve reinforcing bars on the top of the column ( 1 ) are higher than the main beam ( 2 ) and the floor ( 5 ). 
     
     
         8 . The prefabricated frame according to  claim 1 , wherein at a connection node between the main beam ( 2 ) and a column ( 1 ) located at one end of the frame, the cast-in-situ portion at one end of the main beam ( 2 ) is provided with upper and lower connecting bars, each of the connecting bars being bent at a free end thereof 
     
     
         9 . The prefabricated frame according to  claim 1 , wherein at connection nodes between the column ( 1 ) and two main beams ( 2 ) to a right side and to a left side thereof, the cast-in-situ parts at one end of one of said two main beams ( 2 ) is provided with upper and lower connecting bars, which pass above the column ( 1 ) and extend to the other of said two main beams ( 2 ), and both ends of the upper connecting bars are connected to reinforcing bars arranged on top of the cast-in-situ parts of said two main beams ( 2 ), respectively. 
     
     
         10 . The prefabricated frame according to  claim 1 , wherein a cement mortar layer is disposed between a bottom surface of the column ( 1 ) and the lower building structure.