Precast structure and construction method thereof

Abstract

A precast structure and a method of constructing the precast structure. The precast structure includes a first precast beam and a second precast beam. The first precast beam includes a first section, a second section and a first rebar. The second section is separate from the first section and a gap is formed therebetween. The first rebar penetrates through and connects the first section and the second section along a length direction. The second precast beam aligns with the first precast beam and being adjacent to the second section of the first precast beam. The second precast beam is coupled to the first rebar of the first precast beam.

What is claimed is: 
     
         1 . A construction method, comprising:
 providing a first precast column, a second precast column and a third column arranged at sequential intervals;   providing a first precast beam, the first precast beam comprises a first section, a second section spaced apart from the first section, and a first rebar penetrating through the first section and the second section;   lifting the first precast beam, so that the first precast beam bridges the first precast column and the second precast column, wherein two end portions of the first section are respectively arranged on a first end of the first precast column and a second end of the second precast column, the first end of the first precast column facing the second end of the second precast column, the second section is arranged on a third end, opposite to the second end, of the second precast column;   providing a second precast beam, the second precast beam comprises a first end portion and a second end portion opposite to the first end portion;   lifting the second precast beam, so that the first end portion of the second precast beam is arranged on a temporary supporting frame, and the second end portion of the second precast beam is arranged on a fourth end of the third precast column; and   moving the second precast beam, and coupling the first end portion of the second precast to a connecting end of the first rebar in the first precast beam, the connecting end extending beyond an end of the second section of the first precast beam.   
     
     
         2 . The construction method of  claim 1 , wherein the first end portion of the second precast beam comprises a first coupler therein, and the second end portion of the second precast beam comprises a second rebar inserted therein, an end of the second rebar being fixed to the first coupler, wherein moving the second precast beam comprises: aligning the second precast beam and the first precast beam along their respective length directions; and horizontally moving the second precast beam toward the first precast beam, and coupling the first coupler in the second precast beam to the connecting end of the first rebar of the first precast beam. 
     
     
         3 . The construction method of  claim 2 , further comprising:
 providing a third precast beam; and   lifting the third precast beam, so that an end of the third precast beam is arranged between the first section and the second section of the first precast beam, wherein a length direction of the third precast beam is substantially perpendicular to length direction of the first precast beam or the second precast beam.   
     
     
         4 . The construction method of  claim 1 , further comprising:
 providing a corner bracket arranged at an outer side of the third end of the second precast column, the corner bracket facing the third precast column, and ensuring a top surface of the corner bracket being aligned with a top surface of the second precast column;   wherein lifting the first precast beam comprises causing at least a portion of the second section of the first precast beam to be located at a top of the corner bracket.   
     
     
         5 . The construction method of  claim 2 , wherein the third precast column comprises a first main bar and a second main bar therein, wherein the first main bar is adjacent to a fifth end, opposite to the fourth end, of the third precast column, and extends beyond a top surface of the third precast column, the second main bar is adjacent to the fourth end of the third precast column and is entirely embedded in the third precast column, wherein lifting the second precast beam comprises: causing the second end portion of the second precast beam to be arranged on a top of the fourth end of the third precast column and above the second main bar. 
     
     
         6 . The construction method of  claim 5 , wherein a top end of the second main bar is provided with a second coupler therein, the method further comprises:
 after the first coupler in the second precast beam has been coupled to the connecting end of the first rebar in the first precast beam and the second coupler has been exposed to the top of the fourth end of the third precast column, fixing an end of a column rebar to the second coupler in the third precast column.   
     
     
         7 . A precast structure, comprising:
 a first precast beam, comprising:
 a first section; 
 a second section, which is spaced part from the first section so that a gap is formed between the first section and the second section; 
 a first rebar, which connects and penetrates through the first section and the second section along a length direction of the precast beam structure; 
   a second precast beam, which is aligned with the first precast beam along length directions thereof, and an end of the second precast beam is adjacent to an end of the second section of the first precast beam, the end of the second precast beam being coupled with an end of the first bar of the first precast beam.   
     
     
         8 . The precast structure of  claim 7 , further comprising a first precast column, a second precast column and a third precast column, wherein the first precast beam bridges the first precast column and the second precast column, two end portions of the first section are respectively arranged on a first end of the first precast column and a second end of the second precast column, the first end of the first precast column facing the second end of the second precast column, the second section is arranged on a third end, opposite to the second end, of the second precast column, and wherein a second end portion of the second precast beam is arranged on a fourth end of the third precast column. 
     
     
         9 . The precast structure of  claim 7 , wherein the second precast beam comprises:
 a body, with a channel extending along a length direction of the second precast beam, and comprises a first end portion and a second end portion opposite to the first end portion, wherein the first end portion is adjacent to the second section of the first precast beam;   a second rebar, with an end extending into the channel of the body and an opposing end extending toward a direction away from the first precast beam and being bent upward; and   a coupler, embedded in the first end portion of the second precast beam, wherein the coupler is coupled to a connecting end of the first rebar in the first precast beam, the connecting end extending beyond the end of the second section of the first precast beam, so that the first rebar is coupled with the second rebar through the coupler.   
     
     
         10 . The precast structure of  claim 7 , wherein the gap between the first section and the second section of the first precast beam is configured to receive an end of a third precast beam wherein the third precast beam is substantially perpendicular to the first precast beam and the second precast beam.