CN207003723U - High-rise assembled single row of holes precast shear wall and its assembling structure - Google Patents

Abstract

The utility model proposes a high-rise prefabricated single-row hole prefabricated shear wall, which includes a prefabricated wall body, and the top center and bottom center of the prefabricated wall body have assembly holes symmetrically, and the assembly holes at the bottom end are connected with grouting holes. The prefabricated shear wall has the characteristics of simple structure, easy manufacture, convenient transportation and hoisting; the assembly structure of the above-mentioned prefabricated shear wall is also proposed, and the lower and upper parts of the prefabricated shear wall are aligned and arranged at intervals, and the connecting ribs are placed in the assembly holes , the bottom end of the connecting rib is inserted into the assembly hole of the lower prefabricated shear wall for at least 400mm, and the top end is inserted into the assembly hole of the upper prefabricated shear wall for at least 500mm; one or both sides of the prefabricated shear wall are provided with laminated floors; Concrete is poured in the assembly hole and the grouting hole, and the laminated floor slab, so that the upper and lower prefabricated shear walls and the laminated floor slab are connected. The assembly structure of the prefabricated shear wall of the utility model has the characteristics of convenient and fast on-site construction, short construction period and low engineering cost.

Description

High-rise prefabricated single-row hole prefabricated shear wall and its assembly structure

technical field

The utility model relates to the technical field of buildings, in particular to a prefabricated shear wall panel and an assembly structure thereof.

Background technique

Prefabricated buildings refer to buildings assembled on-site with prefabricated shear walls/columns, laminated panels, prefabricated beams and other prefabricated components on the construction site. features. Among the prefabricated components, the vertical assembly and connection methods of the prefabricated shear walls are mainly adopted: 1. Sleeve grouting connection, specifically, the steel bars pre-embedded in the upper and lower prefabricated shear walls are connected through the sleeves, and the grouting in the sleeves is realized. High-strength connection, the unknown point of this connection method is: (1) the sleeve, steel bar docking, and grouting operation procedures are cumbersome, which is not convenient for on-site construction; (2) the sleeve is a special accessory for the docking of prefabricated building components. It is more complicated, the manufacturing cost is higher, and it is easy to increase the project cost; 2. Constrained grout anchor lap connection, specifically installing steel bars in the row holes of the prefabricated shear wall, and passing the steel bars of the upper and lower prefabricated shear walls through the row The holes are inserted in pairs, and then grouted into the row holes to achieve high-strength connection. The unknown point of this connection method is that at present, in order to cooperate with the on-site assembly process, the installation structure of the steel bars in the row holes is relatively complicated, and it is easy to delay the installation of steel bars during on-site assembly construction. During the construction period, if the steel bars in the row holes of the prefabricated shear wall are pre-installed, the exposed steel bars are very unfavorable for transportation and hoisting. Therefore, it is necessary to improve the existing vertical assembly and connection methods of prefabricated shear walls.

Contents of the invention

The purpose of this utility model is to propose a high-rise assembled single-row hole prefabricated shear wall, which has the characteristics of simple structure, easy manufacture, convenient transportation and hoisting; Fast, short construction period and low project cost.

The purpose of this utility model can be realized through the following technical solutions:

The high-rise prefabricated single-row hole prefabricated shear wall includes a prefabricated wall body, and the prefabricated wall is pre-embedded with horizontal distribution bars, vertical distribution bars and tie bars, several horizontal distribution bars and several vertical bars. The distribution bars are arranged in a staggered manner to form a steel skeleton, and the two steel skeletons are hidden in the prefabricated wall at intervals, and the ends of the tie bars are respectively connected to the two steel skeletons. Distributed straight cylindrical assembly holes, there are several grouting holes on the side near the bottom of the prefabricated wall, the grouting holes are arc-shaped curved holes or straight cylindrical oblique holes, and the grouting holes correspond to the assembly holes at the bottom of the prefabricated wall connection, the assembly holes and grouting holes are staggered from the steel skeleton and tie bars. The assembly hole can adopt the following dimensions: a diameter of 80-100mm and a length of 500-1000mm.

An assembly structure of prefabricated shear walls, including two prefabricated shear walls aligned up and down and arranged at intervals, the prefabricated shear walls are the above-mentioned high-rise prefabricated shear walls with single row of holes, and the upper and lower prefabricated shear walls The assembly holes of the walls are aligned, the top of the lower prefabricated shear wall and the bottom of the upper prefabricated shear wall have a superimposed floor interval and form a joint position, and at least one connecting bar is inserted into the upper and lower prefabricated shear walls The bottom end of the connecting rib is inserted into the assembly hole of the lower prefabricated shear wall for at least 400mm, and the top end of the connecting rib is inserted through the joint position into the assembly hole of the upper precast shear wall for at least 500mm.

One or both sides of the prefabricated shear wall are provided with a laminated floor at the joint position. The laminated floor includes a prefabricated floor and a cast-in-place floor on the prefabricated floor. The prefabricated floor is pre-embedded with floor reinforcement. The exposed part is located at the connection position, and a continuous floor steel skeleton is laid on the upper part of the connection position and above the prefabricated floor slab.

Concrete is poured in the assembly hole and grouting hole of the prefabricated shear wall, in the connection position and the steel skeleton of the floor slab, the lower prefabricated shear wall and the laminated floor are connected by concrete, and the upper and lower prefabricated shear walls are connected by connecting bars and concrete .

The construction method of the assembly structure of above-mentioned prefabricated shear wall, it comprises the following steps:

Step 1. Determine the installation position of the prefabricated shear wall on the foundation or floor, build a temporary fixing frame near the installation position, hoist the prefabricated shear wall at the installation position, and fix it by the temporary fixing frame, and the bottom of the prefabricated shear wall Fill the gap between the end and the foundation or the floor with seat grout; when assembling the prefabricated shear wall on the foundation, pre-embed the connecting ribs on the foundation, so that the top of the connecting ribs is inserted into the assembly hole of the prefabricated shear wall for at least 500mm.

Step 2. Build a temporary support frame, install prefabricated floor slabs on one or both sides above the prefabricated shear wall, the prefabricated floor slab is supported by the temporary support frame, and lay a continuous floor steel skeleton above the prefabricated floor slab.

Step 3. Put connecting bars in the assembly holes of the prefabricated shear walls, and fix the top of the connecting bars with the exposed part of the floor reinforcement of the prefabricated floor slab and/or the floor reinforcement skeleton.

Step 4. Install the formwork at the joint between the side of the prefabricated shear wall and the bottom of the prefabricated floor, and pour self-compacting concrete through the grouting hole of the prefabricated shear wall and the assembly hole at the top of the prefabricated shear wall respectively, so that the grouting hole and the prefabricated shear wall The assembly holes at both ends are filled with concrete; concrete is poured on the steel skeleton of the floor; after the concrete is condensed until the strength meets the requirements, the prefabricated floor and the steel skeleton of the floor are connected to form a laminated floor.

Step 5. On the floor formed by the laminated floor slabs built in step 4, repeat steps 1 to 4 to assemble the prefabricated shear walls upward in order to complete the assembly of prefabricated shear walls on each floor. When the construction reaches the top floor, in step 3 , the upper part of the connecting rib is not higher than the connecting position or step 3 is omitted.

The utility model has the following substantive features and progress.

1. The prefabricated high-rise prefabricated shear wall with single row of holes of the utility model is very simple in structure, and has the characteristics of easy manufacture, transportation and hoisting.

2. During the construction of the assembly structure of the prefabricated shear wall of the present utility model, the connecting bars are installed in the assembly holes of the prefabricated shear wall on site, and connected to the floor reinforcement skeleton of the laminated floor to realize positioning, which has the advantages of convenient on-site construction, Simple and fast operation.

3. When the assembly structure of the prefabricated shear wall of the present invention is being constructed, the shear wall of the next layer and the roof of the floor are assembled first, and then the shear wall of the upper layer and the roof of the floor are assembled. This layer-by-layer assembly The method can effectively ensure the construction quality; at the same time, when assembling the upper shear wall, the temporary fixing frame, temporary support frame and formwork used in the construction of the lower layer can be removed and reused for the construction of the upper layer shear wall, which has a high reuse rate of accessories , The characteristics of small construction investment.

Description of drawings

Fig. 1 is a structural schematic diagram (overlooking state) of the high-rise assembled single-row hole prefabricated shear wall of the present invention.

Fig. 2 is a sectional view (front view state) of the prefabricated shear wall shown in Fig. 1 .

Fig. 3 is a schematic diagram of the assembly structure of the prefabricated shear wall shown in Fig. 1 .

Fig. 4 is a construction schematic diagram of step 1 in the assembly construction method of the prefabricated shear wall shown in Fig. 1 .

Fig. 5 is a construction schematic diagram of steps 2 and 3 in the assembly construction method of the prefabricated shear wall shown in Fig. 1 .

Fig. 6 is a construction schematic diagram of step 4 in the assembly construction method of the prefabricated shear wall shown in Fig. 1 .

Fig. 7 is a schematic diagram of constructing the middle layer of the building in step 5 in the assembly construction method of the prefabricated shear wall shown in Fig. 1 .

Fig. 8 is a schematic diagram of the construction of the top floor of the building in step 5 in the assembly construction method of the prefabricated shear wall shown in Fig. 1 .

detailed description

Below in conjunction with accompanying drawing, the utility model is further described.

Example 1

Referring to Fig. 1 and Fig. 2, the high-rise prefabricated shear wall with single row of holes includes a prefabricated wall body 1 . The prefabricated wall 1 is pre-embedded with horizontal distribution bars 11, vertical distribution bars 12 and tie bars 13, several horizontal distribution bars 11 and several vertical distribution bars 12 are staggered to form a reinforcement skeleton, and two reinforcement skeletons The intervals are hidden in the prefabricated wall body 1, and the 13 ends of the tie bars are respectively connected to the two steel bar skeletons.

The top center of the prefabricated wall 1 and the center of the bottom end are symmetrically provided with several vertically distributed straight column-shaped assembly holes 10, and there are several grouting holes 101 on the side near the bottom of the prefabricated wall 1, and the grouting holes 101 are arcs. curved hole (or a straight cylindrical oblique hole arranged obliquely), the grouting hole 101 is correspondingly connected with the assembly hole 10 at the bottom of the prefabricated wall 1, and the assembly hole 10 and the grouting hole 101 are staggered from the steel skeleton and tie Tendon13.

In this embodiment, the diameter of the assembly hole 10 at the top of the prefabricated wall 1 is 90mm and the length is 900mm, the diameter of the grouting hole 101 is 90mm, and the diameter of the assembly hole 10 at the bottom of the prefabricated wall 1 is 90mm and the length is 650mm.

The prefabricated shear wall of this embodiment has a simple structure and is easy to manufacture. The surface of the prefabricated wall body 1 has few exposed steel bars, which makes the transportation and hoisting operations simple and safe, reduces the space occupied by transportation, and is also conducive to the safety of construction personnel's hoisting operations.

Example 2

Referring to Fig. 3, an assembly structure of prefabricated shear walls includes two prefabricated shear walls aligned up and down and arranged at intervals, and the prefabricated shear walls adopt the high-rise prefabricated single-row hole prefabricated shear wall , the assembly holes 10 of the upper and lower prefabricated shear walls are aligned, and there is a superimposed floor interval between the top of the lower prefabricated shear wall and the bottom of the upper prefabricated shear wall to form a joint position 15, and a connecting rib 16 Insert it into the assembly hole 10 of the upper and lower prefabricated shear walls, insert the bottom end of the connecting rib 16 into the assembling hole 10 of the lower prefabricated shear wall for 600 mm, and the top end of the connecting rib 16 passes through the joint position 15 and inserts it into the upper The inside of the assembly hole 10 of the block prefabricated shear wall is 900mm. In order to facilitate on-site construction, the length of the top end of the connecting rib 16 inserted into the assembly hole 10 is not less than 500mm, and the length of the bottom end inserted into the assembly hole 10 is not less than 400mm, which can meet the anchoring requirements respectively.

The two sides of the prefabricated shear wall are respectively provided with laminated floor slabs at the joint position 15, (for the wall near the outermost side of the building, one side of the prefabricated shear wall is provided with a laminated floor plate at the joint position 15, as shown in the figure not shown), the laminated floor includes a prefabricated floor 2 and a cast-in-place floor 3 located on the prefabricated floor 2, the prefabricated floor 2 is pre-embedded with floor steel bars 21, and the exposed part of the floor steel bar 21 has 15 connecting positions, and the connecting positions 15 The upper part of the slab and the top of the prefabricated slab 2 are laid with a continuous slab reinforcement skeleton 31.

Concrete is poured in the assembly hole 10 and the grouting hole 101 of the prefabricated shear wall, the connection position 15 and the steel skeleton 31 of the floor slab. The lower prefabricated shear wall and the laminated floor are connected by concrete, and the upper and lower prefabricated shear walls are connected by Rib 16 is connected with concrete.

The construction method of the prefabricated shear wall assembly structure of this embodiment includes the following steps.

Step 1. Determine the installation position of the prefabricated shear wall on the foundation or floor, and build a temporary fixing frame near the installation position. Referring to Figure 4, hoist the prefabricated shear wall at the installation position and fix it with the temporary fixing frame (in the figure not shown), the bottom of the prefabricated shear wall and the foundation are filled with seat grout 14; when the prefabricated shear wall is assembled on the foundation, a connecting bar 16 is pre-embedded on the foundation, so that the top of the connecting bar 16 is inserted into the 900mm inside the assembly hole 10 at the bottom of the prefabricated shear wall.

Step 2. Build a temporary support frame (not shown in the figure). Referring to Figure 5, install prefabricated floor slabs 2 on both sides above the prefabricated shear wall. The prefabricated floor slab 2 is supported by a temporary support frame and fixed by mechanical connection or welding. The exposed part of the floor reinforcement between the prefabricated floor slabs 2 is connected, and a continuous floor reinforcement skeleton 31 is laid on the top of the prefabricated floor slab 2 .

Step 3, with reference to Figure 5, put a connecting bar 16 in the assembly hole 10 of the prefabricated shear wall, and connect the top of the connecting bar 16 to the exposed part of the floor steel bar of the prefabricated floor 2 and the floor steel bar skeleton 31, using mechanical connection or Fixed connection by welding.

Step 4, referring to Fig. 6, install formwork 4 at the joint between the side of the prefabricated shear wall and the bottom surface of the prefabricated floor 2, first pour self-compacting concrete into the assembly hole 10 at the top of the prefabricated shear wall, and the grouting of the prefabricated shear wall Hole 101 is poured with self-compacting concrete, so that the grouting hole 101 and the assembly holes 10 at both ends of the prefabricated shear wall are filled with self-compacting concrete. After pouring the concrete of the floor slab until the strength reaches the requirement, the prefabricated floor 2 and the steel skeleton 31 of the floor are connected to form a laminated floor.

Step 5, refer to Figure 7, on the floor formed by the laminated floor slabs built in Step 4, repeat Step 1 to Step 4 to assemble the prefabricated shear walls upwards in sequence, and complete the assembly of prefabricated shear walls on each floor; refer to Figure 8, construction When reaching the top floor, in step 3, the upper part of the connecting rib 16 is not higher than the connecting position 15, and the connecting rib 16 is bent and anchored into the floor reinforcement skeleton 31 of the top floor slab and connected.

The assembly structure of the prefabricated shear wall in this embodiment realizes the connection of the upper and lower prefabricated shear walls through the superimposed floor slab constructed by the prefabricated floor 2, which has the characteristics of firm assembly and high construction quality; in the construction process, the next The shear wall and the roof slab of the upper floor are assembled after the shear wall of the first floor and the roof of the floor. This layer-by-layer assembly method effectively ensures the construction quality; at the same time, when assembling the upper shear wall, the lower floor can be removed during construction. The temporary fixing frame, temporary support frame and formwork used in the construction are reused in the construction of the upper shear wall, which has the characteristics of high reuse rate of accessories and small construction investment.

Claims (3)

1. High-rise prefabricated single-row hole prefabricated shear wall, which includes a prefabricated wall (1), and the prefabricated wall (1) is pre-embedded with horizontal distribution bars (11), vertical distribution bars (12) and Tie bars (13), a number of horizontally distributed bars (11) and a number of vertically distributed bars (12) are staggered to form a steel skeleton, and the two steel skeletons are hidden in the prefabricated wall (1) at intervals, and the tie bars ( 13) The ends are respectively connected to two steel skeletons, which are characterized in that: the center of the top end and the center of the bottom end of the prefabricated wall (1) are symmetrically provided with several vertically distributed straight column-shaped assembly holes (10), and the prefabricated wall (1) There are several grouting holes (101) on the side near the bottom of the wall (1), the grouting holes (101) are arc-shaped curved holes or straight column-shaped oblique holes, and the grouting holes (101) are connected with the bottom of the prefabricated wall (1). The assembling hole (10) corresponds to the through connection, and the assembling hole (10) and the grouting hole (101) are staggered from the reinforcement skeleton and the tie bar (13). 2. The prefabricated high-rise prefabricated shear wall with single row of holes according to claim 1, characterized in that: the diameter of the assembly hole (10) is 80-100 mm, and the length is 500-1000 mm. 3. An assembly structure of prefabricated shear walls, comprising 2 prefabricated shear walls aligned up and down and arranged at intervals, characterized in that: The prefabricated shear wall is the high-rise prefabricated single-row hole prefabricated shear wall according to claim 2, the assembly holes (10) of the upper and lower prefabricated shear walls are aligned, and the top of the lower prefabricated shear wall is aligned with the top of the upper prefabricated shear wall. The bottom ends of the prefabricated shear walls have superimposed floor intervals and form joints (15). At least one connecting rib (16) is inserted into the assembly holes (10) of the upper and lower prefabricated shear walls. The connecting ribs ( The bottom end of 16) is inserted into the assembly hole (10) of the lower prefabricated shear wall for at least 400mm, and the top of the connecting rib (16) passes through the connection position (15) and inserted into the assembly hole ( 10) at least 500mm inside; One or both sides of the prefabricated shear wall are provided with a laminated floor at the joint position (15), and the laminated floor includes a prefabricated floor (2) and a cast-in-place floor (3) on the prefabricated floor (2). The prefabricated floor (2) is pre-embedded with floor reinforcement (21), the exposed part of the floor reinforcement (21) is located at the connection position (15), and a continuous Floor reinforcement skeleton (31); Concrete is poured in the assembly holes (10) and grouting holes (101) of the prefabricated shear wall, in the connection position (15) and the steel skeleton of the floor (31), and the lower prefabricated shear wall and the laminated floor are connected by concrete. 1. The lower prefabricated shear wall is connected with concrete through connecting bars (16).