Novel assembly type reinforced concrete prefabricated column connecting structure

Abstract

A novel assembly type reinforced concrete prefabricated column connecting structure comprises a lower-layer prefabricated column upper section, an upper-layer prefabricated column lower section, cushion blocks, lower leveling nuts, upper fixing nuts and stirrups which are connected together through post-cast high-strength concrete to form the assembly type reinforced concrete prefabricated column connecting structure. The lower-layer prefabricated column upper section comprises a longitudinal reserved lap joint steel bar A and a prefabricated core column, the prefabricated core column comprises an embedded screw and a prefabricated core column auxiliary stirrup, and the longitudinal reserved lap joint steel bar A, the prefabricated core column, the embedded screw, the prefabricated core column auxiliary stirrup and the like are poured in a factory to form the lower-layer prefabricated column comprising the lower-layer prefabricated column upper section. The upper-layer prefabricated column lower section comprises a longitudinal reserved lap joint reinforcing steel bar B, a pre-embedded steel rib support and the like, the pre-embedded steel rib support comprises a conversion steel plate and a steel bolt rod, the upper-layer prefabricated column, the lower-layer prefabricated column, the front, the back, the left and the right positions and the perpendicularity of the upper-layer prefabricated column can be adjusted, installation accuracy is improved, operation procedures are simplified, and installation safety is improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to the field of reinforced concrete column connecting structure, especially to a novel prefabricated reinforced concrete column connecting structure. BACKGROUND

[0002] China is vigorously promoting the construction of prefabricated concrete buildings, and the prefabricated reinforced concrete frame structure column connection and construction method is one of the key technologies of prefabricated concrete building construction. The existing Chinese "Prefabricated Concrete Building Technology Standard" uses temporary support of outrigger and longitudinal stress steel extrusion sleeve connection structure for the upper and lower adjacent prefabricated columns of the frame structure. On the one hand, the prefabricated column is heavy, and it is difficult to support the prefabricated column with temporary support of outrigger, which affects safety, and the hoisting alignment error is large. On the other hand, the reserved longitudinal stress steel outside the concrete often bends and deforms during transportation, making it difficult to align with the extrusion sleeve during installation, and the construction difficulty is large, and the engineering quality is difficult to guarantee.

[0003] The existing technology CN222140476U has proposed a prefabricated reinforced concrete prefabricated column connecting structure with steel member positioning on the upper segment of the lower prefabricated column and core column on the lower segment of the upper prefabricated column to increase stability, which solves part of the problem. However, it cannot provide resistance to bending moment, and diagonal bracing must be set during construction, which is complex in process and difficult to ensure operation quality. UTILITY MODEL CONTENT

[0004] The technical problem to be solved by the utility model is to overcome the problems of the existing technology, such as inability to provide resistance to bending moment, necessity of setting diagonal bracing during construction, complexity of process, and difficulty in ensuring operation quality, and to provide a novel prefabricated reinforced concrete prefabricated column connecting structure.

[0005] The utility model solves the technical problem by adopting the technical scheme of a novel prefabricated reinforced concrete prefabricated column connecting structure, which includes an upper segment of a lower prefabricated column, a lower segment of an upper prefabricated column, a cushion block, a lower leveling nut, an upper fixed nut, a stirrup, etc. The upper segment of the lower prefabricated column and the lower segment of the upper prefabricated column are arranged correspondingly, and the cushion block, the lower leveling nut, the upper fixed nut, and the stirrup are arranged between the upper segment of the lower prefabricated column and the lower segment of the upper prefabricated column. The upper segment of the lower prefabricated column, the lower segment of the upper prefabricated column, and the formwork enclose a pouring area, and the prefabricated reinforced concrete prefabricated column connecting structure is formed by pouring high-strength concrete after pouring;

[0006] The upper segment of the lower prefabricated column includes longitudinal reserved lap steel A and a prefabricated core column, etc. The prefabricated core column includes a pre-buried screw rod and a prefabricated core column auxiliary stirrup, etc. The longitudinal reserved lap steel A, the prefabricated core column, the pre-buried screw rod, and the prefabricated core column auxiliary stirrup, etc. are poured with concrete in the factory to form a lower prefabricated column including a lower prefabricated column upper segment;

[0007] The lower section of the upper precast column includes longitudinally reserved lapped reinforcing bars B and embedded steel frame supports, etc. The embedded steel frame supports include conversion steel plates and steel bolts. The embedded steel frame supports and the longitudinally reserved lapped reinforcing bars B, etc., are connected to the grouting holes reserved in the factory to form an upper precast column containing the lower section of the upper precast column by pouring concrete.

[0008] Furthermore, the conversion steel plate is a hollow quadrilateral with multiple openings, the diameter of which is larger than the diameter of the pre-embedded screw.

[0009] Furthermore, four openings are provided and evenly distributed at the four corners of the conversion steel plate.

[0010] Furthermore, multiple steel bolts are provided and fixed on the conversion steel plate, and the conversion steel plate and the steel bolts are welded together to form a pre-embedded steel frame.

[0011] Furthermore, four pre-embedded screws are provided at the four corners of the precast core column and correspond to the openings, and the precast core column auxiliary stirrups are wrapped around the pre-embedded screws.

[0012] This utility model has the following beneficial technical effects:

[0013] The installation accuracy is improved by adjusting the vertical position and verticality of the upper precast column through four adjusting nuts, shims, and conversion steel plates with openings approximately larger than the diameter of the pre-embedded bolts in the upper section of the lower precast column. Four upper fixing nuts provide resistance to bending moments, eliminating the need for diagonal bracing during construction, simplifying the operation process, and improving installation safety. Moving the precast core column from the lower section of the upper precast column to the upper section of the lower precast column facilitates the pre-reserved grouting holes for pouring high-strength concrete, ensuring the density and fullness of the high-strength concrete, improving assembly efficiency, and guaranteeing project quality. Attached Figure Description

[0014] Figure 1 This is a schematic plan view of a novel prefabricated reinforced concrete column connection structure according to the present invention.

[0015] Figure 2 yes Figure 1 Schematic diagram of the pre-embedded steel frame 13 structure;

[0016] Figure 3 yes Figure 1 Schematic diagram of the vertical cross-section structure of the middle AA;

[0017] Figure 4 yes Figure 3 Schematic diagram of the cross-sectional structure of the middle BB;

[0018] Figure 5 yes Figure 3 Schematic diagram of the upper section 2 of the precast columns in the middle and lower layers;

[0019] Figure 6 yes Figure 3 Schematic diagram of the lower section 3 of the precast columns in the middle and upper layers;

[0020] Figure 7 yes Figure 6 Schematic diagram of the pre-embedded steel frame 13 structure.

[0021] Explanation of reference numerals in the attached figures:

[0022] 1. Precast column connection structure; 2. Upper section of lower precast column; 3. Lower section of upper precast column; 4. Spacer block; 5. Lower leveling nut; 6. Upper fixing nut; 7. Stirrup; 8. Longitudinal reserved lapped reinforcing bar A; 9. Longitudinal reserved lapped reinforcing bar B; 10. Precast core column; 11. Embedded bolt; 12. Auxiliary stirrups of precast core column; 13. Embedded steel frame support; 14. Transition steel plate; 15. Steel bolt; 16. Reserved grouting hole; 17. Opening. Detailed Implementation

[0023] The present invention will be further described in detail below with reference to the accompanying drawings and embodiments.

[0024] Reference Figure 1 and Figure 3 This embodiment includes the upper section 2 of the lower precast column, the lower section 3 of the upper precast column, the pad 4, the lower leveling nut 5, the upper fixing nut 6, the stirrup 7, etc.

[0025] Reference Figure 3 , Figure 4 and Figure 5 Specifically, the upper section 2 of the lower precast column includes longitudinal reserved lapped steel bars A8 and precast core column 10. Multiple longitudinal reserved lapped steel bars A8 are provided and fixed inside the precast core column 10. The precast core column 10 includes embedded screw rods 11 and precast core column auxiliary stirrups 12, etc. Multiple embedded screw rods 11 are provided and fixed inside the precast core column 10, and the longitudinal reserved lapped steel bars A8 are set on the outer ring relative to the embedded screw rods 11. The longitudinal reserved lapped steel bars A8, precast core column 10, embedded screw rods 11 and precast core column auxiliary stirrups 12, etc. are cast with concrete in the factory to form the lower precast column including the upper section 2 of the lower precast column.

[0026] Reference Figure 2 , Figure 3 , Figure 4 , Figure 5 , Figure 6 , Figure 7The lower section 3 of the upper precast column includes longitudinally reserved lapped reinforcing bars B9 and embedded steel frame 13, etc. The embedded steel frame 13 includes a conversion steel plate 14 and steel bolts 15. The conversion steel plate 14 is a hollow quadrilateral with multiple openings 17. The diameter of the openings 17 is larger than the diameter of the lower embedded screw 11. Multiple steel bolts 15 are provided and fixed on the conversion steel plate 14. The conversion steel plate 14 and the steel bolts 15 are welded into a whole to form the embedded steel frame 13. After the embedded steel frame 13 and the longitudinally reserved lapped reinforcing bars B9 are pre-drilled in grouting holes 16 in the factory, concrete is poured to form the upper precast column including the lower section 3 of the upper precast column.

[0027] Reference Figure 3 The lower precast column upper section 2 and the upper precast column lower section 3 are set correspondingly to each other, and the pad 4, lower leveling nut 5, upper fixing nut 6, and stirrup 7 are set between the lower precast column upper section 2 and the upper precast column lower section 3. The lower precast column upper section 2, the upper precast column lower section 3 and the formwork enclose the casting area, and the precast reinforced concrete column connection structure 1 is formed by post-pouring high-strength concrete.

[0028] Reference Figure 3 Furthermore, when the upper section 2 of the lower precast column and the lower section 3 of the upper precast column are set in correspondence, the position of the opening 17 on the conversion steel plate 14 corresponds one-to-one with the position of the embedded screw 11. Before the embedded screw 11 passes through the opening 17, the pad 4 and the lower leveling nut 5 are installed on the embedded screw 11. After the embedded screw 11 passes through the opening 17, the pad 4 and the upper fixing nut 6 are installed on the part of the embedded screw 11 that passes through the opening 17, and are fixed by tightening the lower leveling nut 5 and the upper fixing nut 6.

[0029] The implementation principle of a novel prefabricated reinforced concrete column connection structure according to this utility model embodiment is as follows:

[0030] Procurement and fabrication of lower-level precast columns (including the upper section 2 of the lower-level precast column) and upper-level precast columns (including the lower section 3 of the upper-level precast column) are carried out. These are then transported to the construction site. The lower-level precast columns are installed and fixed according to design requirements. After the lower-level beams and slabs are installed and the conditions for upper construction are met, leveling nuts and shims 4 are installed on the upper section 2 of the lower-level precast column, based on the elevation of the upper section 2 and the required elevation of the upper-level precast column. Based on the front-back, left-right, and right-side positions of the upper section 2 and the required front-back, left-right, and right-side positions of the upper-level precast column, four bolts approximately larger than the pre-embedded screws 11 are installed on the conversion steel plate 14. Adjust the position of the upper precast column within the opening 17 of the diameter, install the pad 4, verify the upper precast column and adjust its position in all directions, then install the fixing nut 6 and the horizontal position of the lower section 3 of the upper precast column in all directions. According to the design requirements, the upper section 2 of the lower precast column, the lower section 3 of the upper precast column and the formwork form a pouring area. After pouring high-strength concrete through the reserved grouting hole 16, the upper section 2 of the lower precast column, the lower section 3 of the upper precast column, the pad 4, the lower leveling nut 5, the upper fixing nut 6, the stirrup 7 and other components are solidified together to form the prefabricated reinforced concrete precast column connection structure 1.

[0031] The above are all preferred embodiments of this utility model, and are not intended to limit the scope of protection of this utility model. Identical components are represented by the same reference numerals. It should be noted that the terms "front," "rear," "left," "right," "up," and "down" used in the following description refer to directions in the accompanying drawings, while the terms "inner" and "outer" refer to directions toward or away from the geometric center of a specific component. Therefore, all equivalent changes made to the structure, shape, and principle of this utility model should be included within the scope of protection of this utility model.

Claims

1. A novel prefabricated reinforced concrete column connection structure, characterized in that, The structure includes a lower precast column upper section (2), an upper precast column lower section (3), a pad (4), a lower leveling nut (5), an upper fixing nut (6), and a stirrup (7). The lower precast column upper section (2) and the upper precast column lower section (3) are arranged correspondingly to each other. The pad (4), the lower leveling nut (5), the upper fixing nut (6), and the stirrup (7) are arranged between the lower precast column upper section (2) and the upper precast column lower section (3). The lower precast column upper section (2) and the upper precast column lower section (3) are enclosed by the template to form a casting area. The precast reinforced concrete column connection structure (1) is formed by post-pouring high-strength concrete. The upper section (2) of the lower precast column includes longitudinal reserved lapped steel bars A (8) and precast core column (10). The precast core column (10) includes embedded screw rod (11) and precast core column auxiliary stirrup (7). The longitudinal reserved lapped steel bars A (8), precast core column (10), embedded screw rod (11) and precast core column auxiliary stirrup (7) are poured with concrete in the factory to form a lower precast column including the upper section (2) of the lower precast column. The lower section (3) of the upper precast column includes longitudinal reserved lapped steel bars B (9) and embedded steel frame (13). The embedded steel frame (13) includes a conversion steel plate (14) and a steel bolt (15). The embedded steel frame (13) and the longitudinal reserved lapped steel bars B (9) are connected by pouring concrete after grouting holes (16) are reserved in the factory to form an upper precast column containing the lower section (3) of the upper precast column.

2. The novel prefabricated reinforced concrete column connection structure according to claim 1, characterized in that, The conversion steel plate (14) is a hollow quadrilateral with four openings (17), the diameter of which is larger than the diameter of the pre-embedded screw (11).

3. A novel prefabricated reinforced concrete column connection structure according to claim 2, characterized in that, The opening (17) is provided in four parts and is evenly distributed at the four corners of the conversion steel plate (14).

4. A novel prefabricated reinforced concrete column connection structure according to claim 1, characterized in that, Multiple steel bolts (15) are provided and fixed on the conversion steel plate (14), and the conversion steel plate (14) and the steel bolts (15) are welded together to form a pre-embedded steel frame (13).

5. A novel prefabricated reinforced concrete column connection structure according to claim 2, characterized in that, Four pre-embedded screws (11) are provided at the four corners of the precast core column (10) and correspond one-to-one with the opening (17), and the precast core column auxiliary stirrups (7) are wrapped around the pre-embedded screws (11).

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