An assembled prestressed support-free structure in a hydraulic environment

Abstract

The utility model discloses a kind of assembly type prestress support-free structures under hydraulic environment, it is related to assembly type building technical field, and it includes at least four diagonal distribution's stand, the end face of stand one end extends four reinforcing sections;Frame portion is seated on the end face of four described stand, four corners thereof are recessed portion, four described reinforcing section is located in the recessed portion bare;Many equidistantly arranged on the frame portion reinforcing rib longitudinal beam;Covered on multiple described reinforcing rib longitudinal beam cover plate, it is provided with pouring groove extending towards one side and inlayed in the recessed portion, and contact with the end face of described stand, four described reinforcing section is located in the pouring groove distribution, the sidewall of one side in the pouring groove extends at least two first reinforcing column extending to four described reinforcing section between. The utility model increases the connecting strength of each component after assembly.

Description

Technical Field

[0001] This utility model relates to prefabricated building treatment technology, specifically a prefabricated prestressed supportless structure in a hydraulic environment. Background Technology

[0002] Compared to solid slabs, reinforced concrete hollow core slabs offer advantages in cost, material usage, and structural weight, while also providing better sound insulation. The common construction method is as follows: first, erect the bottom formwork, tie the reinforcing steel, and install the side formwork. Then, place hollow core molds on the bottom formwork, and pour concrete into the cavity formed by the bottom and side molds. After the concrete reaches the specified strength, remove the formwork, and finally plaster the bottom surface of the slab to form a complete hollow core slab structure.

[0003] When using UHPC (Ultra-High Performance Concrete) for cast-in-place connections, truss reinforcement is typically used as the connection method. However, when prestressing is applied to the steel strands in the UHPC base slab using the pre-tensioning method, the truss reinforcement shares some of the prestress, resulting in a reduction in the actual prestress obtained by the UHPC base slab. In prestressed structures, the concrete's compressive strength is enhanced by the prestressing tendons, while the tensile force is mainly borne by the prestressing tendons. However, existing UHPC ribbed composite slabs, when connected to columns, are usually simply placed on top of the columns without effective connection measures, leading to insufficient installation stability and certain safety hazards. Utility Model Content

[0004] The purpose of this invention is to provide a prefabricated prestressed support-free structure for hydraulic engineering environments, in order to overcome the aforementioned shortcomings of the prior art.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a prefabricated prestressed support-free structure in a hydraulic environment, comprising:

[0006] At least four columns are distributed along a diagonal line, and four steel bar segments extend from the end face of one end of each column.

[0007] The frame portion, which sits on the end faces of the four columns, has four recessed corners, and the four steel bar segments are exposed in the recessed portions.

[0008] Multiple reinforcing longitudinal beams are equidistantly arranged on the frame section;

[0009] A cover plate covering multiple reinforcing longitudinal beams is provided with a casting groove extending to one side and embedded in the recessed portion and in contact with the end face of the column. Four steel bar segments are distributed in the casting groove. At least two first steel bar columns extending between the four steel bar segments extend from the side wall of one side of the casting groove.

[0010] Preferably, the four steel bar segments are fitted with steel bar hoops that are fixed by binding wire and are distributed at an angle;

[0011] The two first steel reinforcement columns are symmetrically distributed about the center of the steel reinforcement hoop segment.

[0012] Preferably, the reinforcing longitudinal beam includes a protrusion extending into the inner frame of the frame portion, the vertical height of which is equal to half the vertical height of the inner frame of the frame portion.

[0013] Preferably, the frame portion is fixedly provided with extension platforms on opposite side walls, the extension platforms are flush with the side of the assembled column, and the cover plate is fixedly provided with multiple equidistant contact portions with end faces flush with the extension platforms.

[0014] Preferably, the reinforcing longitudinal beam is embedded between two adjacent contact portions.

[0015] Preferably, the recessed portion extends to two symmetrically distributed second steel bars on two adjacent sides.

[0016] The four second reinforcing bars are symmetrically distributed about the center of the reinforcing bar hoop.

[0017] In the above technical solution, the prefabricated prestressed supportless structure in a hydraulic environment provided by this utility model has the following beneficial effects: the frame part is placed on the end face of the four columns, while the four steel bar segments are exposed in the recessed part. At this time, the reinforcing longitudinal beams are placed on the frame part in sequence, and then the cover plate is placed on the reinforcing longitudinal beams. Then the pouring groove on the cover plate will cover the four steel bar segments, so that the two first steel bar columns and the four steel bar segments are completely wrapped in concrete after subsequent concrete pouring, thereby increasing the fixation of the four corners after assembly and thus increasing the integrity. Attached Figure Description

[0018] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in this utility model. For those skilled in the art, other drawings can be obtained based on these drawings.

[0019] Figure 1 A schematic diagram of the overall structure provided for an embodiment of this utility model;

[0020] Figure 2 Provided for the embodiments of this utility model Figure 1 A schematic diagram of the exploded structure;

[0021] Figure 3Structural schematic diagrams of the steel bar segment, steel bar hoop segment, first steel bar column, and second steel bar column provided in this embodiment of the utility model;

[0022] Figure 4 This is a partially enlarged structural diagram of the casting groove provided in an embodiment of the present utility model.

[0023] Explanation of reference numerals in the attached figures:

[0024] 1. Column; 11. Reinforcing bar segment; 12. Reinforcing bar hoop segment; 2. Frame section; 21. Recessed section; 22. Extension platform; 23. Second reinforcing bar column; 3. Reinforcing bar longitudinal beam; 31. Protrusion; 4. Cover plate; 41. Casting groove; 42. First reinforcing bar column; 43. Contact section. Detailed Implementation

[0025] To enable those skilled in the art to better understand the technical solution of this utility model, the present utility model will be further described in detail below with reference to the accompanying drawings.

[0026] Please see Figure 1-4 This utility model provides a technical solution: a prefabricated prestressed support-free structure in a hydraulic environment, comprising:

[0027] Column assembly: includes at least four columns 1 distributed along a diagonal, with four HRB400 grade steel bar segments 11 of diameter Φ16mm extending from the top of each column 1, and the exposed length of the steel bar segments is 200mm.

[0028] Frame section: Located at the top of the four columns 1, the frame section 2 has rectangular recesses 21 with dimensions of 250mm×250mm at the four corners, so that the four steel bar segments 11 extending from the columns are exposed in the recessed areas.

[0029] Reinforcing longitudinal beam group: Multiple reinforcing longitudinal beams 3 are arranged at equal intervals on the frame part 2, with a spacing of 1200mm. The longitudinal beams are made of C40 precast concrete and are internally equipped with HRB400 grade main reinforcement.

[0030] Cover plate: Covering the reinforcing longitudinal beam 3, the bottom surface of the cover plate 4 is provided with a downwardly extending pouring groove 41 with a depth of 150mm, which can be embedded into the recessed part 21 of the frame part and contact the top surface of the column 1. Four steel bar segments 11 are located inside the pouring groove; two HRB400 grade first steel bar columns 42 with a diameter of Φ14mm extend from one side wall of the pouring groove and extend into the area between the four steel bar segments 11.

[0031] Among them, column 1, frame section 2, reinforcing longitudinal beam 3, and cover plate 4 are all C40 concrete components prefabricated using standardized molds. The four steel bar segments 11 and the first steel bar column 42 are extensions of the internal steel reinforcement skeleton of the components.

[0032] During construction, the frame section 2 is first installed on the top of the four columns 1, so that the four steel bar segments 11 are located in the recessed part 21; then the reinforcing longitudinal beams 3 are installed on the frame section in sequence; then the cover plate 4 is laid so that its pouring groove 41 covers the four steel bar segments 11; finally, C40 micro-expansion concrete is poured in the pouring groove to completely wrap the first steel bar column 42 and the steel bar segments 11, which significantly enhances the connection performance of the four corners and the overall structure.

[0033] As a preferred embodiment of this utility model, refer to Figure 3 The four steel bar segments 11 are externally fitted with inclined steel bar hoops 12, which are tied and fixed with Φ4mm low carbon steel wire. The two first steel bar columns 42 are symmetrically arranged about the center of the steel bar hoop to enhance the restraint effect and connection strength of the concrete in the joint area.

[0034] As another embodiment of this utility model, combined with Figure 3 As shown, the reinforcing longitudinal beam 3 has a protrusion 31 that extends into the inner frame of the frame part 2. The height of the protrusion is 1 / 2 of the height of the inner frame of the frame part, which can effectively distribute the load of the cover plate and improve the bearing capacity.

[0035] As a further optimization of this utility model, such as Figure 3 As shown, the outer walls of both sides of the frame section 2 are provided with extension platforms 22, the outer surfaces of which are flush with the side surfaces of the columns 1 after installation; the cover plate 4 is provided with multiple equidistant contact parts 43, the end faces of which are flush with the extension platforms 22, and the reinforcing longitudinal beams 3 are embedded between adjacent contact parts. In addition, two HRB400 grade second steel reinforcement columns 23 with a diameter of Φ12mm extend from the adjacent sides of the recessed section 21, and the four second steel reinforcement columns 23 are symmetrically distributed about the center of the steel reinforcement hoop section 12, further improving the overall connection integrity and seismic performance.

[0036] The foregoing description only illustrates certain exemplary embodiments of the present invention. Undoubtedly, those skilled in the art can modify the described embodiments in various ways without departing from the spirit and scope of the present invention. Therefore, the above drawings and descriptions are illustrative in nature and should not be construed as limiting the scope of protection of the claims of the present invention.

Claims

1. A prefabricated prestressed support-free structure for hydraulic engineering environments, characterized in that, include: At least four columns (1) are distributed along the diagonal, and four steel bar segments (11) extend from the end face of one end of the column (1). The frame part (2) is located on the end face of the four columns (1), and its four corners are recessed parts (21), with the four steel bar segments (11) exposed in the recessed parts (21); Multiple reinforcing longitudinal beams (3) are equidistantly arranged on the frame part (2); A cover plate (4) covering multiple reinforcing longitudinal beams (3) is provided with a casting groove (41) extending to one side and embedded in the recess (21) and in contact with the end face of the column (1). Four steel bar segments (11) are distributed in the casting groove (41). At least two first steel bar columns (42) extending to the four steel bar segments (11) extend from one side wall of the casting groove (41).

2. The prefabricated prestressed supportless structure in a hydraulic environment according to claim 1, characterized in that, Four steel bar segments (11) are fitted with steel bar hoop segments (12) that are fixed by binding wire and are distributed at an angle. The two first steel bars (42) are symmetrically distributed about the center of the steel bar hoop (12).

3. The prefabricated prestressed supportless structure in a hydraulic environment according to claim 1, characterized in that, The reinforcing longitudinal beam (3) includes a protrusion (31) extending into the inner frame of the frame part (2), the vertical height of which is equal to half the vertical height of the inner frame of the frame part (2).

4. The prefabricated prestressed support-free structure in a hydraulic environment according to claim 1, characterized in that, The frame part (2) is fixedly provided with an extension platform (22) on both sides. The extension platform (22) is flush with the side of the column (1) after assembly. The cover plate (4) is fixedly provided with a plurality of equidistant abutment parts (43) with their end faces flush with the extension platform (22).

5. A prefabricated prestressed support-free structure in a hydraulic environment according to claim 4, characterized in that, The reinforcing longitudinal beam (3) is embedded between two adjacent contact portions (43).

6. A prefabricated prestressed support-free structure in a hydraulic environment according to claim 2, characterized in that, The recessed portion (21) extends to two symmetrically distributed second steel bars (23) on its two adjacent sides. The four second steel bars (23) are symmetrically distributed about the steel bar hoop (12).

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