An assembled column for fitting a prefabricated wall plate of a frame structure

Abstract

The utility model discloses an assembly type constructional column of adaptive frame structure prefabricated wallboard, including first prefabricated block, second prefabricated block and constructional column longitudinal reinforcement, the inside of first prefabricated block and second prefabricated block is equipped with steel mesh, all are seted up on first prefabricated block and second prefabricated block and are used for passing through the through slot of constructional column longitudinal reinforcement, the inner side wall of through slot is provided with the sawtooth tooth slot, and the tooth slot can be engaged with constructional column longitudinal reinforcement through internal injection mortar, and the side of first prefabricated block and second prefabricated block is provided with longitudinal pre -buried connecting steel sheet, and the longitudinal pre -buried connecting steel sheet of two adjacent prefabricated block side walls is mutually welded and is connected. The device is through the sawtooth tooth slot of the inner side wall of the through slot of its first prefabricated block and second prefabricated block, and the tooth slot can be engaged with constructional column longitudinal reinforcement to restrict the displacement of constructional column longitudinal reinforcement, and in addition its sawtooth tooth slot structure can still guide grouting flow, reduce the cavity, improve the grouting density in the through slot.

Description

Technical Field

[0001] This utility model relates to the field of structural engineering technology, specifically to an assembled structural column adapted to prefabricated wall panels of a frame structure. Background Technology

[0002] Cast-in-place structural columns are prone to quality problems such as honeycomb surface defects and misalignment of toothed joints due to their complex construction process and entirely manual operation. Faced with the cumbersome construction and increasing labor costs of traditional structural columns, some studies have explored alternatives to reduce construction costs, such as changing the form of the structural column to replace traditional concrete structural columns, or adopting prefabricated assembly methods to achieve the same effect. A prefabricated structural column suitable for prefabricated wall panels in frame structures, as proposed in publication number CN214364434U, simplifies the construction process and reduces construction difficulty by providing through grooves on the prefabricated blocks for installation with longitudinal reinforcing bars. These grooves are then used to pour mortar to enhance the overall connection between the prefabricated blocks and the longitudinal reinforcing bars. However, the above technology still has the following problems: the connection between the longitudinal reinforcement and the precast blocks mainly relies on the bond force of cement mortar. Under long-term load or seismic action, the longitudinal reinforcement is prone to slippage, which leads to a decrease in the overall structure. In addition, the inner wall of the through groove is a smooth surface, which is prone to forming voids during grouting, affecting the collaborative working performance of the longitudinal reinforcement and the blocks. Utility Model Content

[0003] The purpose of this utility model is to provide an assembled structural column that is compatible with prefabricated wall panels in a frame structure, so as to solve the above-mentioned technical problems.

[0004] To achieve the above objectives, this utility model provides the following technical solution: an assembled structural column adapted to precast wall panels of a frame structure, comprising a first precast block, a second precast block, and longitudinal reinforcement bars for the structural column. Both the first and second precast blocks have internal steel mesh. The upper surfaces of both the first and second precast blocks are provided with connecting bosses, and the lower surfaces of both the first and second precast blocks are provided with connecting grooves for connecting and constructing with adjacent precast blocks. The length of the first precast block is longer than that of the second precast block, so that the two form a toothed joint when laid alternately. Both the first and second precast blocks are provided with through grooves for the longitudinal reinforcement of the structural column to pass through. The inner sidewall of the through groove is provided with a serrated groove. The groove can be engaged with the longitudinal reinforcement of the structural column by internal grouting. The sides of the first and second precast blocks are provided with longitudinally embedded connecting steel plates. The longitudinally embedded connecting steel plates on the sidewalls of two adjacent precast blocks are welded together.

[0005] Furthermore, the through grooves of the first precast block and the second precast block are opened in opposite directions.

[0006] Furthermore, the first precast block and the second precast block are provided with transversely embedded connecting steel plates on their sides. The side walls of the transversely embedded connecting steel plates are provided with holes, and expansion bolts are inserted into the holes. The expansion bolts can be inserted and installed into the external precast wall.

[0007] Furthermore, the toothed groove is arranged laterally and is perpendicular to the longitudinal reinforcement of the structural column.

[0008] Furthermore, the toothed groove is arranged longitudinally and parallel to the longitudinal reinforcement of the structural column.

[0009] Furthermore, the inner wall of the through groove is provided with crisscrossing sawtooth-shaped grooves, which form a grid-like interlocking network.

[0010] Compared with the prior art, the beneficial effects of this utility model are:

[0011] 1. By setting serrated grooves on the inner sidewalls of the through-slots of the first and second precast blocks, the grooves can engage with the longitudinal reinforcement of the structural column to limit the longitudinal and transverse displacement of the longitudinal reinforcement. The transverse grooves enhance the pull-out resistance of the longitudinal reinforcement by engaging with the ribs of the longitudinal reinforcement. The longitudinal grooves improve the shear resistance by engaging with the ribs of the longitudinal reinforcement. The crisscrossing serrations form a grid-like network, which can take into account both of the above properties. In addition, the serrated groove structure can also guide the grout flow, reduce voids, and improve the grout density in the through-slot.

[0012] 2. The longitudinally embedded connecting steel plates on the side walls are firmly connected by welding to form a continuous longitudinal force transmission path, which can enhance the longitudinal load-bearing capacity of the wall. The transversely embedded connecting steel plates on the side further strengthen the connection between the precast blocks and the external precast wall. With the cooperation of expansion bolts and transversely embedded connecting steel plates, the stability of the connection between the precast blocks and the external precast wall can be greatly enhanced, ensuring the connection strength of the entire wall structure in all directions, and effectively improving the stability and safety of the building structure. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0014] Figure 2 This is a cross-sectional view of the transverse sawtooth groove on the inner wall of the through groove of this utility model;

[0015] Figure 3 This is a cross-sectional view of the longitudinal sawtooth groove on the inner wall of the through groove of this utility model;

[0016] Figure 4 This is a partial enlarged view of the crisscross sawtooth groove structure of this utility model.

[0017] In the figure: 1-first precast block, 2-second precast block, 3-longitudinal reinforcement of structural column, 4-steel mesh, 5-through groove, 6-tooth groove, 7-connecting boss, 8-connecting groove, 9-expansion bolt, 10-longitudinal embedded connecting steel plate, 11-transverse embedded connecting steel plate, 12-hole. Detailed Implementation

[0018] To better understand the purpose, structure, and function of this utility model, the following description, in conjunction with the accompanying drawings, provides a more detailed account of an assembled structural column adapted to prefabricated wall panels of a frame structure.

[0019] Please see Figures 1-4 An assembled structural column adapted to precast wall panels in a frame structure is disclosed. This assembled structural column mainly consists of a first precast block 1, a second precast block 2, and longitudinal reinforcement 3. The first precast block 1 is longer than the second precast block 2, allowing them to form a toothed joint during alternating construction, thereby improving the connection strength with the precast wall panel. Both the first precast block 1 and the second precast block 2 are internally equipped with a steel mesh 4. The steel mesh 4, through crisscrossing steel bars, effectively enhances the tensile and compressive strength of the precast blocks, preventing damage during transport. If cracks or damage occur during transportation, installation, and use, both the first precast block 1 and the second precast block 2 are provided with through grooves 5 for the longitudinal reinforcement 3 of the structural column to pass through. The through grooves 5 of the first precast block 1 and the second precast block 2 are opened in opposite directions. The inner sidewall of the through groove 5 is provided with a sawtooth groove 6. The groove 6 can be engaged with the longitudinal reinforcement 3 of the structural column by internal grouting. The groove 6 can restrict the displacement of the longitudinal reinforcement 3 of the structural column, so that the longitudinal reinforcement and the precast block are tightly combined to form a stable force system, which significantly improves the overall stability and seismic performance of the building structure.

[0020] The toothed grooves 6 formed by the toothed structure can serve as flow channels for mortar, guiding the mortar to fill all parts of the through groove evenly and avoiding localized insufficient filling. Moreover, the toothed grooves 6 also provide a channel for air bubbles to escape, allowing air to rise and escape along the grooves, reducing the probability of voids. The toothed grooves 6 also increase the contact area between the inner wall of the through groove 5 and the mortar, enhancing the adhesion between the mortar and the wall of the through groove 5, making it easier for the mortar to adhere to the groove wall during flow, reducing air retention caused by excessively rapid mortar flow. In addition, when the mortar fills the toothed grooves 6, it can form a tighter wrap around the reinforcing steel, further squeezing out air.

[0021] In actual construction, construction workers can more intuitively judge whether the mortar is filled densely by observing the filling condition of the toothed groove 6, and promptly carry out replenishment or vibration to effectively reduce void problems. However, it is difficult to judge the internal filling condition of a smooth surface with the naked eye.

[0022] In different embodiments, the toothed groove 6 has various configurations. In some embodiments, the toothed groove 6 is arranged laterally, perpendicular to the longitudinal reinforcement 3 of the structural column. When the toothed groove 6 is arranged laterally and perpendicular to the longitudinal reinforcement 3 of the structural column, its advantage is to enhance the lateral restraint of the longitudinal reinforcement and improve the structural column's ability to resist horizontal loads. In some embodiments, the toothed groove 6 is arranged longitudinally, parallel to the longitudinal reinforcement 3 of the structural column. If the toothed groove 6 is arranged longitudinally and parallel to the longitudinal reinforcement 3 of the structural column, this design is significantly effective in resisting the longitudinal displacement of the longitudinal reinforcement, effectively preventing the longitudinal reinforcement from moving up and down under stress, and ensuring the stability of the structural column under vertical loads. In some embodiments, the inner wall of the through groove 5 is provided with crisscrossing sawtooth grooves 6, which form a grid-like interlocking network. When the inner wall of the through groove 5 is provided with crisscrossing sawtooth grooves 6, forming a grid-like interlocking network, the connection strength between the longitudinal reinforcement 3 of the structural column and the precast block is maximized, restricting the displacement of the longitudinal reinforcement in all directions, significantly improving the overall mechanical performance of the structural column, and enabling it to remain stable under complex stress conditions.

[0023] In this embodiment, the tooth height of the serrated groove 6 is 5-8mm, the tooth spacing is 15-20mm, and the tooth angle is 45°-60°, but it is not limited to these parameters and can be adjusted according to the diameter of the longitudinal reinforcement 3 of the structural column.

[0024] In this embodiment, the upper surfaces of the first precast block 1 and the second precast block 2 are provided with connecting protrusions 7, and the lower surfaces of the first precast block 1 and the second precast block 2 are provided with connecting grooves 8, which are used to connect and build with adjacent precast blocks. During the building process, the adjacent precast blocks can be quickly positioned through the precise docking of the protrusions and grooves, which improves construction efficiency and ensures a tight connection between the blocks, thereby enhancing the integrity of the wall.

[0025] The sides of the first precast block 1 and the second precast block 2 are provided with longitudinally embedded connecting steel plates 10, and the longitudinally embedded connecting steel plates 10 of the side walls of two adjacent precast blocks are welded together; the sides of the first precast block 1 and the second precast block 2 are provided with transversely embedded connecting steel plates 11, and the side walls of the transversely embedded connecting steel plates 11 are provided with holes 12, and expansion bolts 9 are inserted into the holes 12. The expansion bolts 9 can be inserted and installed into the external precast wall. The longitudinal steel plates 10 and the transverse steel plates 11 are staggered and the spacing is ≥50mm to avoid the overlap of the heat-affected zone during welding.

[0026] After two adjacent precast blocks are installed in place, the longitudinal embedded connecting steel plates 10 of the side wall are firmly connected by welding to form a continuous longitudinal force transmission path, which enhances the longitudinal load-bearing capacity of the wall. The transverse embedded connecting steel plates 11 set on the side further strengthen the connection between the precast blocks and the external precast wall. With the expansion bolts 9 and the transverse embedded connecting steel plates 11, the stability of the connection between the precast blocks and the external precast wall can be greatly enhanced, ensuring the connection strength of the entire wall structure in all directions and effectively improving the stability and safety of the building structure.

[0027] In terms of material selection, the first precast block 1 and the second precast block 2 are made of high-strength concrete with a compressive strength grade of not less than C30. The longitudinal reinforcement 3 of the structural column is made of HRB400E grade steel bar to meet the seismic performance requirements. Micro-expansion grout with a strength grade of not less than M30 is used with an expansion rate of 0.02%-0.05%. The construction temperature is 5-35℃. A 30mm diameter vibrator is used, and the vibration time at each point is 10-15 seconds until no air bubbles emerge from the surface of the grout.

[0028] In terms of construction process, the first precast block 1 and the second precast block 2 are manufactured in the factory to ensure the dimensional accuracy and quality of each component. After being transported to the construction site, they are laid out and positioned according to the design requirements. The precast blocks are then fitted onto the outside of the longitudinal reinforcement 3 of the structural column through the through groove 5. The longitudinal reinforcement and the precast blocks are initially fixed using the toothed groove 6. Next, the precast blocks are laid. Adjacent blocks are quickly positioned and spliced ​​by connecting bosses 7 and connecting grooves 8. At the same time, the longitudinal pre-embedded connecting steel plates 10 are welded to ensure the longitudinal connection strength. Then, the precast wall is fixed to the outside of the structural column with cement mortar. The through groove 5 is sealed by the precast wall. Then, expansion cement mortar is poured into the through groove 5. The mortar flow is guided by the sawtooth groove 6 and vibrated to ensure dense filling. Finally, the expansion bolts 9 are passed through the holes 12 of the transverse pre-embedded connecting steel plates 11 and anchored into the outer precast wall to complete the installation of the entire prefabricated structural column.

[0029] It is understood that this utility model has been described through some embodiments, and those skilled in the art will recognize that various changes or equivalent substitutions can be made to these features and embodiments without departing from the spirit and scope of this utility model. Furthermore, under the teachings of this utility model, these features and embodiments can be modified to adapt to specific situations and materials without departing from the spirit and scope of this utility model. Therefore, this utility model is not limited to the specific embodiments disclosed herein, and all embodiments falling within the scope of the claims of this application are within the protection scope of this utility model.

Claims

1. A prefabricated structural column adapted to precast wall panels in a frame structure, characterized in that, The structure includes a first precast block (1), a second precast block (2), and longitudinal reinforcement bars (3) for structural columns. Both the first precast block (1) and the second precast block (2) have internal steel mesh (4). The upper surfaces of both the first precast block (1) and the second precast block (2) are provided with connecting bosses (7), and the lower surfaces of both the first precast block (1) and the second precast block (2) are provided with connecting grooves (8) for connecting and laying with adjacent precast blocks. The length of the first precast block (1) is longer than the length of the second precast block (2), allowing for... When the two are laid alternately, they form toothed joints. Both the first precast block (1) and the second precast block (2) are provided with through grooves (5) for passing through the longitudinal reinforcement (3) of the structural column. The inner sidewall of the through groove (5) is provided with a toothed groove (6). The toothed groove (6) can be engaged with the longitudinal reinforcement (3) of the structural column by internal grouting. The sides of the first precast block (1) and the second precast block (2) are provided with longitudinal pre-embedded connecting steel plates (10). The longitudinal pre-embedded connecting steel plates (10) on the sidewalls of two adjacent precast blocks are welded together.

2. The prefabricated structural column adapted to prefabricated wall panels of a frame structure according to claim 1, characterized in that: The opening direction of the through groove of the first precast block (1) is opposite to that of the second precast block.

3. The prefabricated structural column for adapting to prefabricated wall panels of a frame structure as described in claim 1 or 2, characterized in that: The first precast block (1) and the second precast block (2) are provided with a transverse pre-embedded connecting steel plate (11) on their sides. The side wall of the transverse pre-embedded connecting steel plate (11) is provided with a hole (12). An expansion bolt (9) is inserted into the hole (12). The expansion bolt (9) can be inserted and installed into the external precast wall.

4. The prefabricated structural column adapted to precast wall panels of a frame structure according to claim 1, characterized in that: The toothed groove (6) is arranged horizontally and is perpendicular to the longitudinal reinforcement (3) of the structural column.

5. The prefabricated structural column adapted to prefabricated wall panels of a frame structure according to claim 1, characterized in that: The toothed groove (6) is arranged longitudinally and is parallel to the longitudinal reinforcement (3) of the structural column.

6. The prefabricated structural column adapted to prefabricated wall panels of a frame structure according to claim 1, characterized in that: The inner wall of the through groove (5) is provided with crisscrossing sawtooth grooves (6), which form a grid-shaped interlocking network.

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