Patent ID: 12234633

Reference numerals are as follows:1 - upper prefabricated column1.1 - upper column main reinforcement,1.2 - upper column stirrup1.3 - upper column concrete,2 - lower prefabricated column2.1 - lower column main reinforcement,2.2 - lower column stirrup2.3 - lower column concrete,3 - prefabricated beam3.1 - beam upper main reinforcement,3.2 - beam lower main reinforcement3.3 - beam stirrup,3.4 - beam concrete4 - upper column transfer member,5 - lower column transfer member6 - connecting slot of beam main reinforcement,6.1 - first bottom plate6.2 - first side plate,6.2.1 - front side plate section6.2.2 - rear side plate section,6.3 - transverse baffle6a - upperconnecting slot of beam main reinforcement,6a.1 - third side plate6a.2 - top plate,6b - lower connecting slot of beam main reinforcement6b.1 - second side plate,6b.2 - second bottom plate7 - first horizontal load transfer plate,8 - first perforation9 - first grouting hole,10 - second horizontal load transfer plate11 - second perforation,12 - second grouting hole13 - first nut,14 - second nut15 - grouting pipe,16 - joint concrete17 - shear bolt,18 - joint post - casted concrete19 - first anchoring plate,20 - second anchoring plate21 - first arc - shaped gap,22 - first through hole23 - second arc - shaped gap,24 - second through hole25 - third through hole.

DETAILED DESCRIPTION OF THE EMBODIMENTS

As shown inFIGS.1to12, a prefabricated reinforced concrete beam-column connecting structure includes an upper prefabricated column1, a lower prefabricated column2and a prefabricated beam3. The upper prefabricated column1includes an upper column main reinforcement1.1, an upper column stirrup1.2and upper column concrete1.3. The upper column stirrup1.2is configured to constitute an upper section column steel frame along with the upper column main reinforcement1.1. The lower prefabricated column2includes a lower column main reinforcement2.1, a lower column stirrup2.2and lower column concrete2.3. The lower column stirrup2.2is configured to constitute a lower section column steel frame. The prefabricated beam3includes a beam upper main reinforcement3.1, a beam lower main reinforcement3.2, a beam stirrup3.3, and beam concrete3.4. The prefabricated reinforced concrete beam-column connecting structure further includes an upper column transfer member4, a lower column transfer member5and a connecting slot of beam main reinforcement6. An upper end portion of the lower column main reinforcement2.1extends beyond a top surface of the lower column concrete2.3. A part, extending beyond the lower column concrete2.3, of the lower column main reinforcement2.1is provided with threads. A horizontal section shape of the lower column transfer member5is adapted to a horizontal section shape of the lower prefabricated column2, and a lower end portion of the lower column transfer member5is sleeved on an upper end portion of the lower prefabricated column2. First horizontal load transfer plates7are arranged at intervals in a vertical direction inside the lower column transfer member5. First perforations8are formed at positions, corresponding to the lower column main reinforcement2.1, on surfaces of the first horizontal load transfer plates7. An upper end portion of the lower column main reinforcement2.1passes through the first perforations8in sequence, and is anchored at a top of an uppermost first horizontal load transfer plate7by a first nut13. A first grouting hole9is formed at a middle portion of the surface of the first horizontal load transfer plate7.

A lower end portion of the upper column main reinforcement1.1extends beyond a bottom surface of the upper column concrete1.3. A part, extending beyond the upper column concrete1.3, of the upper column main reinforcement1.1is provided with threads. A horizontal section shape of the upper column transfer member4is adapted to a horizontal section shape of the upper prefabricated column1, and an upper end portion of the upper column transfer member4is sleeved on a lower end portion of the upper prefabricated column1. Second horizontal load transfer plates10are arranged at intervals in a vertical direction inside the upper column transfer member4. Second perforations11are formed at positions, corresponding to the upper column main reinforcement1.1, on surfaces of the second horizontal load transfer plates10. A lower end portion of the upper column main reinforcement1.1passes through the second perforations11in sequence, and is anchored at a bottom of a lowermost second horizontal load transfer plate10by a second nut14. A second grouting hole12is formed at a middle portion of the surface of the second horizontal load transfer plate10. The upper column transfer member4is provided on a top of the lower column transfer member5, and is connected with the lower column transfer member5by welding. A grouting pipe15is pre-embedded in the upper column concrete1.3, and a lower end portion of the grouting pipe15passes through the first grouting holes9in sequence and extends into a joint between the upper prefabricated column1and the lower prefabricated column2. A joint concrete16is poured into a cavity enclosed by the lower column transfer member5, the upper column transfer member4, the lower prefabricated column2, and the upper prefabricated column1. The connecting slot of beam main reinforcement6is connected to one side of the upper column transfer member4and the lower column transfer member5. The prefabricated beam3is provided on one side of a joint between the upper prefabricated column1and the lower prefabricated column2and is close to the connecting slot of beam main reinforcement6. An end portion of one side, close to the connecting slot of beam main reinforcement6, of the beam upper main reinforcement3.1and an end portion of one side, close to the connecting slot of beam main reinforcement6, of the beam lower main reinforcement3.2both extend beyond the end portion face of a corresponding side of the beam concrete3.4. The end portion of one side of the beam upper main reinforcement3.1close to the connecting slot of beam main reinforcement6is bent downward and extends into the connecting slot of beam main reinforcement6. The end portion of one side of the beam lower main reinforcement3.2close to the connecting slot of beam main reinforcement6is bent upward and extends into the connecting slot of beam main reinforcement6. Shear bolts17are arranged at intervals on an outer surface of the connecting slot of beam main reinforcement6. A joint post-casted concrete18is poured between the prefabricated beam3and the lower column transfer member5and between the prefabricated beam3and the upper column transfer member4.

In an embodiment, the horizontal sections of the upper prefabricated column1and the lower prefabricated column2are both rectangular, the upper column transfer member4is constituted by four rectangular steel plates being spliced end to end, and the lower column transfer member5is constituted by four rectangular steel plates being spliced end portion to end.

In an embodiment, the outer diameter of the grouting pipe15is less than the diameter of the first grouting hole9, and a gap is provided between an outer wall of the grouting pipe15and a side wall of the first grouting hole9.

In an embodiment, a first anchoring plate19is provided between the first nut13and the top of the uppermost first horizontal load transfer plate7, and a second anchoring plate20is provided between the second nut14and the top of the lowermost second horizontal load transfer plate10.

In an embodiment, the lower column transfer member5is cylindrical, a triangular groove is provided at an upper end portion of an outer surface of the lower column transfer member5along a top edge thereof, and the lower column transfer member5has a height equal to h/2+b, where h represents a height of the prefabricated beam3, and the value of b ranges from 20 mm to 500 mm.

In an embodiment, the upper column transfer member4is cylindrical, a triangular groove is provided at a lower end portion of an outer surface of the upper column transfer member4along a bottom edge thereof, and the upper column transfer member4has a height equal to h/2+b, where h represents the height of the prefabricated beam3, and the value of b ranges from 20 mm to 500 mm.

In a first embodiment, in a case of both the beam upper main reinforcement3.1and the beam lower main reinforcement3.2have relative small diameters or an internal force applied to the beam upper main reinforcement3.1and the beam lower main reinforcement3.2is relative small, the number of the connecting slot of beam main reinforcement6is one. The connecting slot of beam main reinforcement6includes a first bottom plate6.1and a first side plate6.2. A horizontal section of the first side plate6.2is in a horizontal-laying U shape, and an opening of the U shape of the first side plate6.2faces towards one side of the lower column transfer member5and the upper column transfer member4. Herein, the wording “horizontal-laying U shape” refers to two legs of a U-shape member are arranged horizontal, and located at the same horizontal plane, that is, the orthographic projection of the horizontal-laying U-shape member on the horizontal plane is in shape of U. An upper portion of the first side plate6.2is connected to the upper column transfer member4, and a lower portion of the first side plate6.2is connected to the lower column transfer member5. A first arc-shaped gap21is formed in the middle of a vertical edge, connected to the lower column transfer member5and the upper column transfer member4, of the first side plate6.2. A welded seam between the lower column transfer member5and the upper column transfer member4passes through the first arc-shaped gap21. The first bottom plate6.1is arranged to block a rectangular opening enclosed by a bottom edge of the first side plate6.2and the lower column transfer member5. First through holes22are formed at intervals on the first bottom plate6.1. A bent section of the beam lower main reinforcement3.2extends into the connecting slot of beam main reinforcement6through the first through holes22.

In a second embodiment, in a case of both the beam upper main reinforcement3.1and the beam lower main reinforcement3.2have relative large diameters or an internal force applied to the beam upper main reinforcement3.1and the beam lower main reinforcement3.2is relative large, in order to prevent the middle of the connecting slot of beam main reinforcement6from being deformed, a transverse baffle6.3is provided inside a cavity enclosed by the first side plate6.2, the lower column transfer member5, and the upper column transfer member4. One end portion, close to the lower column transfer member5and the upper column transfer member4, of the transverse baffle6.3is connected to the lower column transfer member5and the upper column transfer member4. One end portion of the transverse baffle6.3away from the lower column transfer member5and the upper column transfer member4extends beyond the first side plate6.2. The first side plate6.2includes a front side plate section6.2.1and a rear side plate section6.2.2. A second arc-shaped gap23is formed at a position corresponding to the first arc-shaped gap21on one side of the transverse baffle6.3close to the transfer members. A welded seam between the lower column transfer member5and the upper column transfer member4passes through the first arc-shaped gap21. A horizontal section of the front side plate section6.2.1and a horizontal section of the rear side plate section6.2.2each is in a horizontal-laying L shape. Herein, the wording “horizontal-laying L shape” refers to two branches of a L-shape member are arranged horizontal, and located at the same horizontal plane, that is, the orthographic projection of the horizontal-laying L-shape member on the horizontal plane is in shape of L. In addition, the front side plate section6.2.1and the rear side plate section6.2.2are symmetrically arranged on two opposite sides of the transverse baffle6.3. One end portion of the front first side plate6.2is connected to the lower column transfer member5and the upper column transfer member4, and the other end portion of the front side plate section6.2.1is connected to a front side surface of the transverse baffle6.3. One end portion of the rear first side plate6.2is connected to the lower column transfer member5and the upper column transfer member4, and the other end portion of the rear side plate section6.2.2is connected to a rear side surface of the transverse baffle6.3. The shear bolts17are connected at intervals on a part of the transverse baffle6.3extending beyond the first side plate6.2. In the embodiment, the transverse baffle6.3has a height greater than that of the first side plate6.2.

In a third embodiment, in a case that on-site welding requirements are high, welding conditions are poor, and welding quality is difficult to be ensured, the number of the connecting slot of beam main reinforcement6can be two, which are a upper connecting slot of beam main reinforcement6aand a lower connecting slot of beam main reinforcement6b. The lower connecting slot of beam main reinforcement6bis connected to the lower column transfer member5and includes a second side plate6b.1and a second bottom plate6b.2. A horizontal section of the second side plate6b.1is in a horizontal-laying U shape, and an opening of the U shape of the second side plate6b.1faces towards one side of the lower column transfer member5. The second bottom plate6b.2is arranged to block a rectangular opening formed by a bottom edge of the second side plate6b.1and the lower column transfer member5. Second through holes24are formed at intervals on the second bottom plate6b.2. A bent section of the beam lower main reinforcement3.2extends into the lower connecting slot of beam main reinforcement6bthrough the second through holes24. The upper connecting slot of beam main reinforcement6ais connected to the upper column transfer member4and includes a third side plate6a.1and a top plate6a.2. A horizontal section of the third side plate6a.1is in a horizontal-laying U shape, and an opening of the U shape of the third side plate6a.1faces towards one side of the upper column transfer member4. The top plate6a.2is arranged to block a rectangular opening enclosed by a top edge of the third side plate6a.1and the upper column transfer member4. Third through holes25are formed at intervals on the top plate6a.2. A bent section of the beam upper main reinforcement3.1extends into the upper connecting slot of beam main reinforcement6athrough the third through holes25.

In the embodiment, the first horizontal load transfer plate7is a rectangular steel plate that is welded inside the lower column transfer member11. The number of the first horizontal load transfer plate7is two, and these two first horizontal load transfer plates7are welded in the inner cavity of the lower column transfer member11in parallel.

In the embodiment, the second horizontal load transfer plate10is a rectangular steel plate that is welded inside the upper column transfer member4. The number of the second horizontal load transfer plate10is two, and these two second horizontal load transfer plates10are welded in the inner cavity of the lower column transfer member11in parallel.

A construction method for a prefabricated reinforced concrete beam-column connecting structure includes the following steps:step 1: fabricating the lower prefabricated column2, the upper prefabricated column1and the prefabricated beam3, where during fabricating of the lower prefabricated column2, the lower column transfer member5is sleeved on the top of the lower prefabricated column2, and the upper end portion of the lower column main reinforcement2.1passes through the first perforations8in sequence and is anchored at the top of the uppermost first horizontal load transfer plate7; during fabricating the upper prefabricated column1, the upper column transfer member4is sleeved on the bottom of the upper prefabricated column1, and the lower end portion of the upper column main reinforcement1.1passes through the second perforations11in sequence and is anchored at the bottom of the lowermost second horizontal load transfer plate10, during fabricating of the prefabricated beam3, the end portion of the beam upper main reinforcement3.1extends beyond the end surface of the beam concrete3.4, and the exceeded part is bent downward, and the end portion of the beam lower main reinforcement3.2extends beyond the end surface of the beam concrete3.4, and the exceed part is bent upward;step 2: installing the lower prefabricated column2in place;step 3: hoisting the upper prefabricated column1and aligning a bottom center of the upper prefabricated column1with a top center of the lower prefabricated column2;step 4: after determining that the upper prefabricated column1is positioned correctly, butt welding at a joint seam between the upper column transfer member4and the lower column transfer member5;step 5: pouring a joint concrete16from the upper end portion of the grouting pipe15into a cavity enclosed by the upper column transfer member4and the lower column transfer member5;step 6: connecting the connecting slot of beam main reinforcement6at a joint, corresponding to the prefabricated beam3, on the upper column transfer member4and the lower column transfer member5by welding;step 7: hoisting the prefabricated beam3, and extending the bent section of the beam lower main reinforcement3.2and the bent section of the beam upper main reinforcement3.1into the connecting slot of beam main reinforcement6; andstep 8: pouring the joint post-casted concrete18into a formwork, and the construction is completed

In the embodiment, the beam stirrup3.3are hooped outside the beam upper main reinforcement3.1and the beam lower main reinforcement3.2, and constitutes the beam steel frame together with the beam upper main reinforcement3.1and the beam lower main reinforcement3.2.

In an embodiment, in a case that the number of the connecting slot of beam main reinforcement6is two, in step 7, during construction, the bent section of the beam upper main reinforcement3.1is extended into the upper connecting slot of beam main reinforcement6a, and the bent section of the beam lower main reinforcement3.2is extended into the lower connecting slot of beam main reinforcement6b. If the pouring quality needs to be ensured, the third through holes25and the second through holes24can be sealed by sealant.

In the embodiment, in a case that the number of the connecting slot of beam main reinforcement6is one, in step 7, during construction, the bent section of the beam upper main reinforcement3.1is extended into the connecting slot of beam main reinforcement6, and the bent section of the beam lower main reinforcement3.2is extended into the connecting slot of beam main reinforcement6through the first through holes22. If the pouring quality needs to be ensured, the first through holes22can be sealed by sealant.

In the embodiment, in a case that a triangular groove is provided at an upper end portion of an outer surface of the lower column transfer member5along a top edge thereof and a triangular groove is provided at a lower end portion of an outer surface of the upper column transfer member4along a bottom edge thereof, the triangular groove at the top of the lower column transfer member5and the triangular groove at the bottom of the upper column transfer member4constitute a V-shaped groove. In step 4, a butted welding seam is welded in the V-shaped groove.

The above embodiments are not an exhaustive list of specific implementations, and other embodiments are possible. The object of the above embodiments is to illustrate the present application, but not to limit the scope of protection of the present application. All applications derived from simple changes of the present application fall within the scope of protection of the present application.