Prefabricated UHPC frame structure

Abstract

The utility model relates to the technical field of UHPC frames, in particular to a prefabricated UHPC frame structure which comprises a prefabricated UHPC node component and a prefabricated UHPC beam, a first grouting hole is formed in the surface of the prefabricated UHPC node component, a connecting groove is fixedly formed in the side face of the prefabricated UHPC node component, a first reserved hole and a second reserved hole are formed in the side face of the prefabricated UHPC node component, and the prefabricated UHPC beam is fixedly connected with the prefabricated UHPC node component. And fixing steel bars are inserted into the first preformed holes and the second preformed holes. According to the prefabricated UHPC node component, the connecting grooves are evenly formed in the four sides of the prefabricated UHPC node component, coplanar butt joint of the prefabricated UHPC beams is achieved, the structural stability and load balance are remarkably improved, the internal fixing steel bars are arranged at the 90-degree angle, the connecting strength is enhanced, and the attractiveness and weather resistance are improved through the hidden steel bars; the first through hole and the second through hole are respectively and accurately aligned with the first preformed hole and the second preformed hole, so that the rapid installation and the stability of the beam and the joint are optimized.

Description

Technical Field

[0001] The utility model relates to the technical field of UHPC frameworks, in particular to a precast UHPC framework structure. Background Art

[0002] Cast-in-place structures have many limitations such as low construction efficiency and high energy consumption, and gradually it is difficult to meet the development requirements of building industrialization. Precast and assembled buildings have become the development direction of building industrialization due to their advantages such as fast construction speed, component factory production, reduction of on-site wet operations, and reduction of environmental pollution. After years of development and popularization, precast and assembled concrete structures have been widely studied and used. A precast and assembled concrete framework structure refers to a structure in which beam and column components are precast in a precast factory and transported to the construction site for connection to form an integral structure. Compared with cast-in-place concrete structures, it has the advantages of fast construction speed, easy guarantee of component quality, good quality, small environmental pollution, labor cost savings, and saving a large amount of formwork and supports. It is a structural form with very broad prospects. However, in construction operations, stirrups are often densified in the joint area and steel bars are lapped at the beam ends and column ends, resulting in congestion of steel bars, which makes construction difficult and affects the pouring quality of the joint area. Improvements are needed. Therefore, a precast UHPC framework structure is proposed. Summary of the Utility Model

[0003] The purpose of the utility model is to solve the technical problems proposed in the above background art.

[0004] The utility model adopts the following technical scheme: A precast UHPC framework structure includes a precast UHPC joint component and a precast UHPC beam. A first grouting hole is opened on the surface of the precast UHPC joint component. A connecting groove is fixedly installed on the side surface of the precast UHPC joint component. A first reserved hole and a second reserved hole are opened on the side surface of the precast UHPC joint component. Fixed steel bars are inserted into both the first reserved hole and the second reserved hole. A second grouting hole is opened on the surface of the precast UHPC beam. The precast UHPC beam includes a longitudinal beam and a transverse beam. A second perforation is opened inside the longitudinal beam. A first perforation is opened inside the transverse beam. Connecting steel bars are inserted into both the first perforation and the second perforation. The fixed steel bars and the connecting steel bars are fixedly connected through a steel bar sleeve.

[0005] Preferably, the first reserved hole and the second reserved hole are respectively located on two adjacent side surfaces of the precast UHPC joint component, and the first reserved hole and the second reserved hole are inside the connecting groove. Here, it helps the fixed steel bars to penetrate through the precast UHPC joint component at 90 degrees. At the same time, when pouring the connecting groove, the extended fixed steel bars can be hidden to avoid the exposure of the fixed steel bars.

[0006] Preferably, the first perforation is horizontally aligned with the first reserved hole, and the second perforation is horizontally aligned with the second reserved hole. Here, it helps to smoothly dock the precast UHPC beam and the precast UHPC joint component, and improve the stability of the precast UHPC beam and the precast UHPC joint component.

[0007] Preferably, the number of the connecting grooves is four groups, and the four groups of connecting grooves are symmetrically distributed on the side surface of the precast UHPC joint component. Here, it can make the precast UHPC beams assembled around the precast UHPC joint component be on the same plane, so as to improve the stability of the precast UHPC frame structure.

[0008] Preferably, the first reserved hole and the second reserved hole are on different horizontal planes. Here, it avoids the collision of the fixing steel bars passing through the first reserved hole and the second reserved hole, which affects the use of the fixing steel bars.

[0009] Preferably, a fixing sleeve is fixedly installed on the surface of the precast UHPC joint component, a fixing block is fixedly installed on the bottom surface of the precast UHPC joint component, the fixing block slides inside the fixing sleeve, a third grouting hole is formed on the surface of the fixing sleeve, and a fourth grouting hole is formed on the surface of the fixing block. Here, the height of the two adjacent precast UHPC frames above and below can be adjusted, and the convenience of personnel using the precast UHPC frame can be improved.

[0010] Preferably, the fixing block and the fixing sleeve are at the center of the precast UHPC joint component. Here, it helps to improve the stability of the two adjacent precast UHPC frames above and below, and makes them not easy to tilt.

[0011] Compared with the prior art, the advantages and positive effects of the present utility model are as follows:

[0012] 1. In the present utility model, by setting the connecting groove, fixing steel bar, connecting steel bar, steel bar sleeve, first grouting hole, second grouting hole, first reserved hole, and second reserved hole structures, four groups of connecting grooves are evenly distributed on the four side surfaces of the precast UHPC joint component to ensure that the surrounding precast UHPC beams can be docked on the same plane, effectively enhancing the overall stability and load balance. The first and second reserved holes inside the precast UHPC joint component are equipped with fixing steel bars, and these steel bars penetrate through the connecting groove at a 90-degree angle, which not only increases the connection strength between the joint and the beam, but also avoids the exposure of the steel bars through the concealed arrangement of the steel bars, improving the aesthetics and weather resistance of the structure. The horizontal alignment of the first perforation with the first reserved hole and the second perforation with the second reserved hole optimizes the docking process of the precast UHPC beam and the joint, ensuring the quickness of installation and the stability of subsequent use.

[0013] 2. In the present utility model, by providing the structures of fixing blocks, fixing sleeves, third grouting holes, and fourth grouting holes, installing adjustable fixing sleeves and fixing blocks on the precast UHPC joint components not only enhances the vertical and horizontal adjustment capabilities of the structure but also provides flexibility in adjusting the heights of adjacent frames. The fixing sleeves and fixing blocks are installed at the central position of the precast UHPC joint components, strengthening the connection stability between the upper and lower frames and effectively preventing potential tilting problems of the frames. The grouting operation through the third grouting holes and fourth grouting holes further fixes the connection points, improving the seismic resistance and durability of the overall structure. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 FIG. is a schematic diagram of a precast UHPC frame structure proposed by the present utility model;

[0015] Figure 2 FIG. is a schematic diagram of a precast UHPC joint component of a precast UHPC frame structure proposed by the present utility model;

[0016] Figure 3 FIG. is a cross-sectional view of a precast UHPC joint component of a precast UHPC frame structure proposed by the present utility model;

[0017] Figure 4 FIG. is a schematic diagram of a precast UHPC beam of a precast UHPC frame structure proposed by the present utility model.

[0018] LEGEND DESCRIPTION:

[0019] 1. Precast UHPC joint component; 2. First grouting hole; 3. First reserved hole; 4. Second reserved hole; 5. Connection groove; 6. Fixing sleeve; 7. Fixing block; 8. Third grouting hole; 9. Fourth grouting hole; 10. Fixing steel bar; 11. Connection steel bar; 12. Steel bar sleeve; 13. Precast UHPC beam; 131. Longitudinal beam; 132. Transverse beam; 14. Second grouting hole; 15. Second perforation; 16. First perforation. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0020] In order to more clearly understand the above objects, features, and advantages of the present utility model, the following further describes the present utility model with reference to the drawings and embodiments. It should be noted that, without conflict, the embodiments of the present application and the features in the embodiments can be combined with each other.

[0021] In the following description, many specific details are set forth to fully understand the present utility model. However, the present utility model can also be implemented in other ways different from those described herein. Therefore, the present utility model is not limited by the specific embodiments disclosed in the following specification.

[0022] Embodiment 1

[0023] Please refer to Figures 1-4 , the present utility model provides a technical solution: a precast UHPC frame structure, including a precast UHPC joint member 1 and a precast UHPC beam 13. A first grouting hole 2 is provided on the surface of the precast UHPC joint member 1. A connecting groove 5 is fixedly installed on the side surface of the precast UHPC joint member 1. The number of the connecting grooves 5 is four groups, and the four groups of connecting grooves 5 are symmetrically distributed on the side surface of the precast UHPC joint member 1, which can make the precast UHPC beams 13 assembled around the precast UHPC joint member 1 be in the same plane, so as to improve the stability of the precast UHPC frame structure. A first reserved hole 3 and a second reserved hole 4 are provided on the side surface of the precast UHPC joint member 1. Fixed steel bars 10 are inserted into the first reserved hole 3 and the second reserved hole 4 respectively. The first reserved hole 3 and the second reserved hole 4 are respectively located on two adjacent side surfaces of the precast UHPC joint member 1, and the first reserved hole 3 and the second reserved hole 4 are inside the connecting groove 5, which helps the fixed steel bars 10 to penetrate through the inside of the precast UHPC joint member 1 at 90 degrees. At the same time, when pouring the connecting groove 5, the extended fixed steel bars 10 can be hidden to avoid the exposure of the fixed steel bars 10. The first reserved hole 3 and the second reserved hole 4 are on different horizontal planes, avoiding the collision of the fixed steel bars 10 passing through the first reserved hole 3 and the second reserved hole 4, which affects the use of the fixed steel bars 10. A second grouting hole 14 is provided on the surface of the precast UHPC beam 13. The precast UHPC beam 13 includes a longitudinal beam 131 and a transverse beam 132. A second through hole 15 is provided inside the longitudinal beam 131, and a first through hole 16 is provided inside the transverse beam 132. Connecting steel bars 11 are inserted into the first through hole 16 and the second through hole 15 respectively. The fixed steel bars 10 and the connecting steel bars 11 are fixedly connected through a steel bar sleeve 12. The first through hole 16 is horizontally aligned with the first reserved hole 3, and the second through hole 15 is horizontally aligned with the second reserved hole 4. The first through hole 16 is horizontally aligned with the first reserved hole 3, and the second through hole 15 is horizontally aligned with the second reserved hole 4, which helps the stable butt joint of the precast UHPC beam 13 and the precast UHPC joint member 1 and improves the stability of the precast UHPC beam 13 and the precast UHPC joint member 1.

[0024] Embodiment 2

[0025] Please refer to Figures 2-3, a fixing sleeve 6 is fixedly installed on the surface of the precast UHPC joint member 1, and a fixing block 7 is fixedly installed on the bottom surface of the precast UHPC joint member 1. The fixing block 7 slides inside the fixing sleeve 6. A third grouting hole 8 is formed on the surface of the fixing sleeve 6, and a fourth grouting hole 9 is formed on the surface of the fixing block 7. The height of two adjacent upper and lower precast UHPC frames can be adjusted, improving the convenience of use of the precast UHPC frames by personnel. The fixing block 7 and the fixing sleeve 6 are located at the exact center of the precast UHPC joint member 1, helping to improve the stability of two adjacent upper and lower precast UHPC frames and making them less likely to tilt.

[0026] Working principle: Reserve a first grouting hole 2, a first reserved hole 3 and a second reserved hole 4 on the fabricated precast UHPC joint member 1, and reserve a second grouting hole 14, a first perforation 16 and a second perforation 15 on the precast UHPC beam 13 for subsequent steel bar installation and grouting operations. The connecting groove 5 is integrally connected with the precast UHPC joint member 1. Insert fixing steel bars 10 into the first reserved hole 3 and the second reserved hole 4. Grout into the precast UHPC joint member 1 through the first grouting hole 2 to make the fixing steel bars 10 and the precast UHPC joint member 1 an integral whole. Assemble the precast UHPC beam 13 with the connecting groove 5 so that the transverse beam 132 is butted against the left and right sides of the precast UHPC joint member 1. Align the connecting steel bar 11 passing through the first jacking hole with the fixing steel bar 10 passing through the first reserved hole 3. Make the longitudinal beam 131 butted against the front and back sides of the precast UHPC joint member 1. Align the connecting steel bar 11 passing through the second perforation 15 with the fixing steel bar 10 passing through the second reserved hole 4. Then fix the connecting steel bar 11 and the fixing steel bar 10 with a steel bar sleeve 12. Grout into the precast UHPC beam 13 through the second grouting hole 14 to make the connecting steel bar 11 and the precast UHPC beam 13 an integral whole. Grout at the position where the fixing steel bar 10 and the connecting steel bar 11 are connected in the connecting groove 5 to make the precast UHPC beam 13 and the precast UHPC joint member 1 an integral whole. According to the use position of the precast UHPC frame, adjust the distance between two adjacent upper and lower precast UHPC frames to improve the adaptability of the precast UHPC frame. At this time, grout into the fixing sleeve 6 through the third grouting hole 8 to change the position of the fixing block 7 inside the fixing sleeve 6. Then grout into the fixing block 7 through the fourth grouting hole 9 to fix the fixing block 7 and the fixing sleeve 6 and make them an integral whole, which can effectively improve the energy dissipation capacity and durability of the frame.

[0027] The above are only the preferred embodiments of the present utility model, and are not intended to limit the present utility model in other forms. Any person skilled in the art may use the technical content disclosed above to make changes or modifications into equivalent embodiments with equivalent changes and apply them to other fields. However, any simple modifications, equivalent changes and modifications made to the above embodiments based on the technical essence of the present utility model without departing from the content of the technical solution of the present utility model still fall within the protection scope of the technical solution of the present utility model.

Claims

1. A prefabricated UHPC frame structure, comprising a prefabricated UHPC node member (1) and a prefabricated UHPC beam (13), characterized in that: The surface of the prefabricated UHPC node component (1) is provided with a first grouting hole (2); a side of the prefabricated UHPC node component (1) is fixedly provided with a connection groove (5); a side of the prefabricated UHPC node component (1) is provided with a first reserved hole (3) and a second reserved hole (4); fixed steel bars (10) are inserted into the first reserved hole (3) and the second reserved hole (4); and a second grouting hole (2) is provided on the surface of the prefabricated UHPC beam (13). The prefabricated UHPC beam (13) comprises a longitudinal beam (131) and a transverse beam (132), the longitudinal beam (131) is provided with a second through hole (15), the transverse beam (132) is provided with a first through hole (16), the first through hole (16) and the second through hole (15) are both provided with connecting steel bars (11), and the fixing steel bars (10) and the connecting steel bars (11) are fixedly connected via a steel bar sleeve (12).

2. The prefabricated UHPC frame structure according to claim 1, characterized in that: The first reserved hole (3) and the second reserved hole (4) are respectively located on two adjacent side surfaces of the prefabricated UHPC node component (1), and the first reserved hole (3) and the second reserved hole (4) are located inside the connection groove (5).

3. The prefabricated UHPC frame structure according to claim 1, characterized in that: The first through hole (16) is horizontally aligned with the first reserved hole (3), and the second through hole (15) is horizontally aligned with the second reserved hole (4).

4. The prefabricated UHPC frame structure according to claim 1, characterized in that: The number of the connection grooves (5) is four groups, and the four groups of connection grooves (5) are symmetrically distributed on the side of the prefabricated UHPC node component (1).

5. The prefabricated UHPC frame structure according to claim 1, characterized in that: The first reserved hole (3) and the second reserved hole (4) are located on different horizontal planes.

6. The prefabricated UHPC frame structure according to claim 1, characterized in that: A fixing sleeve (6) is fixedly mounted on the surface of the prefabricated UHPC node component (1), a fixing block (7) is fixedly mounted on the bottom surface of the prefabricated UHPC node component (1), the fixing block (7) slides inside the fixing sleeve (6), a third grouting hole (8) is opened on the surface of the fixing sleeve (6), and a fourth grouting hole (9) is opened on the surface of the fixing block (7).

7. The prefabricated UHPC frame structure according to claim 6, characterized in that: The fixing block (7) and the fixing sleeve (6) are located in the center of the prefabricated UHPC node component (1).

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