Prefabricated constructional column

Abstract

The utility model relates to a prefabricated constructional column which comprises a column body and a steel bar structure. The column body is provided with a cavity in the extending direction of the column body, the two ends of the cavity in the extending direction of the cavity are open and used for insertion of embedded steel bars arranged on a connecting floor slab, notches are further formed in the two ends of the column body, and the notches penetrate through the adjacent side of the column body in the extending direction of the column body and communicate with the outside and the cavity. The steel bar structure is pre-buried in the column body, extends in the same direction as the cavity and is at least partially arranged on the periphery of the cavity in a surrounding mode. According to the scheme, the overall mass is reduced, and hoisting is facilitated; meanwhile, cross connection of the connecting floor slab and the prefabricated constructional column is achieved, the structural strength of a building is improved, and construction operation is relatively convenient; and the reinforcing steel bar structure is arranged on the periphery of the cavity, so that the strength of the prefabricated constructional column can meet the requirement.

Description

Technical Field

[0001] The utility model relates to the technical field of prefabricated columns, in particular to a prefabricated structural column. Background Art

[0002] In most current engineering construction projects, cast-in-place reinforced concrete occupies a dominant position and has its advantages, but there are also obvious defects in engineering implementation, such as long construction period, large material input, high cost and other problems. Precast reinforced concrete has the advantages of high efficiency, energy saving, material saving and low cost compared to cast-in-place concrete.

[0003] For example, patent CN 208293902 U discloses a prefabricated structural column, which can increase the connection strength between the masonry and the structural column by implanting tie bars in the structural column, thereby achieving the effect of increasing the seismic strength of the masonry and the structural column. However, the prefabricated structural column in the patent is solid, relatively heavy, and inconvenient to hoist. During installation, multiple tie bars arranged longitudinally need to be laid together with the masonry, and the construction operation is relatively cumbersome. Utility Model Content

[0004] In view of this, it is necessary to provide a prefabricated structural column to solve the technical problems that the prefabricated structural columns in the prior art are solid, relatively heavy, inconvenient to hoist, and during installation, multiple longitudinally arranged tie bars need to be laid together with the masonry, and the construction operation is relatively cumbersome.

[0005] The utility model provides a prefabricated structural column, which comprises:

[0006] The column has a cavity along its extension direction, and both ends of the cavity in the extension direction are open for inserting the embedded steel bars on the connecting floor slab, and both ends of the column are also provided with notches, each of which passes through a side adjacent to the column along the extension direction of the column and connects the outside and the cavity; and

[0007] The steel bar structure is embedded in the column, extends in the same direction as the cavity, and at least partially surrounds the periphery of the cavity.

[0008] Optionally, the two notches are located on the same side wall of the column.

[0009] Optionally, both ends of the column are respectively provided with limit holes connected to the cavity, the limit holes correspond one-to-one to the two notches and pass through the column, and the prefabricated structural column also includes two groups of limit rods, each group of the limit rods is passed through the corresponding limit holes and through the embedded steel bars provided on the connecting floor.

[0010] Optionally, a plurality of the limiting holes are provided at each end of the column, and the plurality of the limiting holes at each end are arranged at intervals along the extension direction of the column;

[0011] The limiting rods of each group are provided with a plurality of limiting holes corresponding to each end.

[0012] Optionally, the cavity includes a main body section and two open sections, the two open sections are respectively located at two ends of the column and are respectively connected to the two notches and the main body section, wherein the cross-sectional dimension of each open section is greater than the cross-sectional dimension of the main body section;

[0013] The prefabricated structural column also includes two insulation plates, and the two insulation plates are respectively used to cover the connecting openings between the two open sections and the main section.

[0014] Optionally, the steel bar structure portions located at both ends of the column extend into the open section, are arranged around the periphery of the embedded reinforcement of the connecting floor slab, and are welded to the embedded reinforcement of the connecting floor slab.

[0015] Optionally, the length of the open section is greater than or equal to 300 mm.

[0016] Optionally, the cross-sectional dimensions of each notch are gradually reduced from a side away from the cavity to a side close to the cavity.

[0017] Optionally, the steel structure includes a plurality of longitudinal bars and a plurality of stirrups embedded in the column, the plurality of longitudinal bars extend along the extension direction of the column and are arranged at intervals around the outer circumference of the cavity, the plurality of stirrups are tightened around the longitudinal bars and are arranged at intervals along the extension direction of the plurality of longitudinal bars.

[0018] Optionally, a plurality of stirrups are located between two of the notches.

[0019] Optionally, the distance between two adjacent stirrups is a, satisfying 190 mm ≤ a ≤ 210 mm.

[0020] Optionally, the prefabricated structural column further comprises a supporting column, the supporting column is connected to the column body, and the column body extends laterally to support the crossbeam of the masonry;

[0021] The steel bar structure also includes main steel bars and extended steel bars. The main steel bars are buried in the column and at least partially surround the periphery of the cavity. The extended steel bars are buried in the support column and connected to the main steel bars. The extended steel bars partially extend into the beam to be welded to the embedded bars of the beam.

[0022] Compared with the prior art, in the prefabricated structural column provided by the utility model, a cavity is set in the middle of the column to reduce the overall mass, thereby facilitating lifting; at the same time, the two ends of the cavity are opened to facilitate the embedded steel bars on the upper and lower connecting floor slabs (masonry) to extend into the cavity of the column from the open joint; and when the column is masonryed with the upper and lower connecting floor slabs, the position of the cavity corresponding to the end of the embedded steel bar is first sealed, and then concrete is poured from the notch to the end cavity position of the column to solidify and connect the embedded steel bar with the column, realize the cross connection between the connecting floor slab and the prefabricated structural column, improve the structural strength of the building, and the construction operation is relatively convenient; and a steel bar structure is arranged on the periphery of the cavity so that the strength of the prefabricated structural column can meet the requirements.

[0023] The above description is only an overview of the technical solution of the utility model. In order to more clearly understand the technical means of the utility model and implement it according to the contents of the specification, the preferred embodiment of the utility model is described in detail as follows with the accompanying drawings. The specific implementation method of the utility model is given in detail by the following embodiments and their drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] The drawings described herein are used to provide a further understanding of the present invention and constitute a part of the present application. The exemplary embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation on the present invention. In the drawings:

[0025] Figure 1 A schematic structural diagram of a first embodiment of the present invention when a prefabricated structural column is connected to a connecting floor slab;

[0026] Figure 2 for Figure 1 Schematic diagram of the local structure of the prefabricated structural columns and the connecting floor slabs;

[0027] Figure 3 for Figure 1 Schematic diagram of the cross section of the prefabricated structural column on the AA plane;

[0028] Figure 4 for Figure 1 Schematic diagram of the cross section of the prefabricated structural column on the BB surface;

[0029] Figure 5 A schematic structural diagram of a second embodiment of the present invention when the prefabricated structural column is connected to a connecting floor slab;

[0030] Figure 6 for Figure 5 Schematic diagram of the local structure of the prefabricated structural columns and the connecting floor slabs;

[0031] Figure 7 for Figure 5Schematic diagram of the partial structure of the prefabricated structural columns and beams;

[0032] Figure 8 for Figure 5 Schematic diagram of the cross section of the prefabricated structural column at the CC plane;

[0033] Fig. 9 for Figure 5 Schematic diagram of the cross section of the prefabricated structural column at the DD plane.

[0034] Description of reference numerals:

[0035] 100. Prefabricated structural column; 1. Column; 1a. Cavity; 1a1. Open section; 1a2. Main section; 1b. Notch; 2. Reinforcement structure; 21. Longitudinal reinforcement; 22. Hoop reinforcement; 23. Main reinforcement; 24. Extension reinforcement; 3. Limit rod; 4. Support column; 5. Connecting floor slab; 51. Embedded reinforcement connecting floor slab; 6. Crossbeam; 61. Embedded reinforcement of crossbeam; 7. Post-poured concrete. DETAILED DESCRIPTION

[0036] The preferred embodiments of the present invention are described in detail below in conjunction with the accompanying drawings, wherein the accompanying drawings constitute a part of the present application and are used together with the embodiments of the present invention to illustrate the principles of the present invention, but are not used to limit the scope of the present invention.

[0037] See also Figures 1 to 9 The prefabricated structural column 100 includes a column body 1 and a steel bar structure 2; the column body 1 is provided with a cavity 1a along its own extension direction, and both ends of the cavity 1a in the extension direction are open for the insertion of the embedded steel bars on the connecting floor 5, and the two ends of the column body 1 are also provided with notches 1b, each notch 1b passes through the adjacent side of the column body 1 along the extension direction of the column body 1, and connects the outside and the cavity 1a; the steel bar structure 2 is pre-buried in the column body 1, and is extended in the same direction as the cavity 1a, and is at least partially arranged around the periphery of the cavity 1a. Specifically, the middle part of the column body 1 is provided with a cavity 1a along its own extension direction.

[0038] In the prefabricated structural column 100 provided by the utility model, a cavity 1a is set in the middle of the column body 1 to reduce the overall mass, thereby facilitating lifting; at the same time, the two ends of the cavity 1a are opened to facilitate the embedded steel bars on the upper and lower connecting floor slabs 5 (masonry) to extend into the cavity 1a of the column body 1 from the open joint; and when the column body 1 is masonried with the upper and lower connecting floor slabs 5, the position of the cavity 1a corresponding to the end of the embedded steel bar is first blocked, and then concrete is poured from the notch 1b to the end cavity 1a of the column body 1 to solidify and connect the embedded steel bar with the column body 1, so as to realize the cross connection between the connecting floor slab 5 and the prefabricated structural column 100, improve the structural strength of the building, and the construction operation is relatively convenient; and a steel structure 2 is arranged on the periphery of the cavity 1a, so that the strength of the prefabricated structural column 100 can meet the requirements. It should be noted that, in one embodiment, a notch 1b may be opened on the connecting floor slab 5, and the steel structure 2 may be extended into the notch 1b of the connecting floor slab 5, and then concrete may be poured.

[0039] Furthermore, the two notches 1b are located on the same side wall of the column 1, so that the construction workers can pour concrete into the position of the masonry reinforcement corresponding to the cavity 1a through the two notches 1b, thereby improving convenience. Figure 2 and Figure 3 In this embodiment, the cross-sectional dimensions of each notch 1b are gradually reduced from the side away from the cavity 1a to the side close to the cavity 1a. This makes it convenient for construction workers to lift the prefabricated structural column 100 with a forklift, and when pushing the prefabricated structural column 100 close to the masonry embedded steel bars, the notch 1b can stably accommodate the embedded steel bars to ensure smooth construction.

[0040] Furthermore, both ends of the column 1 are respectively provided with limiting holes connecting the cavity 1a, and the limiting holes correspond to the two notches 1b one by one and pass through the column 1. The prefabricated structural column 100 also includes two groups of limiting rods 3, and each group of limiting rods 3 is passed through the corresponding limiting holes and through the embedded steel bars provided on the connecting floor 5. In this embodiment, the limiting rods 3 are passed through the limiting holes of the column 1 and through the embedded steel bars of the masonry to prevent the prefabricated structural column 100 from tipping over and improve stability. It should be noted that, in one embodiment, the embedded steel bars of the masonry include a plurality of longitudinally extending steel bars and stirrups, and the plurality of longitudinally extending steel bars are arranged at intervals along the circumferential direction, and the stirrups are wrapped around the plurality of longitudinally extending steel bars.

[0041] Furthermore, there are multiple limiting holes at each end of the column 1, and the multiple limiting holes at each end are arranged at intervals along the extension direction of the column 1; each group of limiting rods 3 is provided with multiple limiting holes corresponding to each end. In this solution, multiple limiting holes and limiting rods 3 are provided correspondingly, further preventing the prefabricated structural column 100 from accidentally tipping over during installation. Specifically, in this embodiment, two limiting holes are provided at each end of the column 1, and two limiting rods 3 are provided correspondingly in each group.

[0042] Furthermore, the cavity 1a includes a main section 1a2 and two open sections 1a1, the two open sections 1a1 are respectively located at the two ends of the column 1, and are respectively connected to the two notches 1b, and are connected to the main section 1a2, wherein the cross-sectional dimensions of each open section 1a1 are greater than the cross-sectional dimensions of the main section 1a2; the prefabricated structural column 100 also includes two insulation boards, which are respectively used to cover the connecting openings between the two open sections 1a1 and the main section 1a2. In this way, before the embedded reinforcement is connected to the column 1 for pouring, the connection between the open section 1a1 and the main section 1a2 can be blocked by the insulation board to prevent the cavity 1a from being filled with concrete, and the operation is convenient. Specifically, the length of the open section 1a1 is greater than or equal to 300 mm. In this way, the length of the embedded reinforcement of the masonry extending into the cavity 1a can be controlled to be greater than 300 mm, thereby improving the connection strength between the prefabricated structural column 100 and the masonry.

[0043] Furthermore, in one embodiment, see Figure 5 and Figure 6 , the steel structure 2 at both ends of the column 1 partially extends into the open section 1a1, and is arranged around the outer periphery of the embedded reinforcement 51 connecting the floor slab, and is welded to the embedded reinforcement 51 connecting the floor slab. That is, the steel bars at the ends of the column 1 are arranged around the embedded reinforcement 51 connecting the floor slab to cover the steel bars connecting the floor slab 5, and the steel bars at the ends of the column 1 are welded to the embedded reinforcement 51 connecting the floor slab, and then concrete is poured from the notch 1b into the cavity 1a to improve the connection strength.

[0044] Furthermore, the steel structure 2 includes a plurality of longitudinal bars 21 and a plurality of stirrups 22 embedded in the column 1. The plurality of longitudinal bars 21 extend along the extension direction of the column 1 and are arranged at intervals around the periphery of the cavity 1a. The plurality of stirrups 22 are clamped around the longitudinal bars 21 and arranged at intervals along the extension direction of the plurality of longitudinal bars 21. In this embodiment, the steel structure 2 is configured in the form of longitudinal bars 21 and stirrups 22 so as to be able to surround the periphery of the cavity 1a, and the structure is simple and reliable. Specifically, the plurality of stirrups 22 are located between the two notches 1b. That is, the position of the notch 1b does not correspond to the stirrups 22 being wound around the longitudinal bars 21, but the strength of the masonry embedded bars is matched with the longitudinal bars 21 to ensure the strength of the joint between the masonry and the column 1, and save costs. It should be noted that in one embodiment, the two ends of the longitudinal bars 21 extend toward the open section 1a1 and extend into the open section 1a1 to be welded and connected to the embedded bars 51 connecting the floor slab. In addition, in this solution, the distance between two adjacent stirrups 22 is a, which satisfies 190 mm ≤ a ≤ 210 mm. Specifically, in the steel structure 2, the distance between two adjacent stirrups 22 is controlled to be 200 mm.

[0045] For further information, see Figures 7 to 9, the prefabricated structural column 100 also includes a support column 4, which is connected to the column body 1, and the lateral extension of the column body 1 is used to support the crossbeam 6 of the masonry; the steel structure 2 also includes a main steel bar 23 and an extended steel bar 24, the main steel bar 23 is buried in the column body 1, and at least partially surrounded by the periphery of the cavity 1a, and the extended steel bar 24 is buried in the support column 4 and connected to the main steel bar 23, wherein the extended steel bar 24 partially extends into the crossbeam 6 to be welded with the embedded steel bar 61 of the crossbeam. It should be understood that when the floor height between two adjacent connecting floor slabs 5 reaches a certain level, a corresponding crossbeam 6 needs to be set on the masonry. In this embodiment, the extended steel bar 24 extending from the support column 4 can be welded and connected to the embedded steel bar 61 of the crossbeam first, and then concrete can be poured at the intersection of the support column 4, the crossbeam 6 and the column body 1 to achieve the main connection and improve the connection strength. For ease of understanding, the concrete poured after the prefabricated structural column 100 is hoisted into place is called post-cast concrete 7.

[0046] In addition, it should be noted that, based on the above structure, in one embodiment, the specific construction process and parameters of the prefabricated structural column 100 provided by the utility model are:

[0047] The cross-sectional size of the prefabricated structural column 100 is 200mm*300mm, with a circular hole of 100mm in diameter reserved in the middle and 350mm notches reserved at the top and bottom. The net height of the prefabricated structural column 100 is 50mm lower than the net height of the masonry wall;

[0048] The longitudinal reinforcement of the prefabricated structural column 100 is 4 12mm steel bars, the stirrups are 6@200, and three standardized stirrups are evenly arranged in the structural column, and the stirrups are removed at the upper and lower 350mm height positions;

[0049] The prefabricated structural column 100 adopts the aluminum mold process. After the side mold and the bottom mold are supported, the steel cage is placed in the template. After the position of the steel bar is adjusted, a sleeve with a diameter of 100 mm is inserted in the center of the steel cage. A standardized aluminum box is used at the upper and lower notches. The aluminum box is inserted into the sleeve. The height of the prefabricated structural column 100 is adjusted by moving the standardized aluminum box up and down.

[0050] C25 concrete is used to cast 100 prefabricated structural columns, and the concrete is vibrated at the same time to solve the quality problems of honeycomb surface and other quality problems of traditional cast-in-place structural columns, and avoid rework and repair in the later stage;

[0051] After the concrete enters the final setting, the order of removing the formwork is the aluminum box, the sleeve and the concrete side formwork. After the concrete reaches the lifting strength, the installation of the prefabricated structural column 100 begins;

[0052] During installation, the masonry infill wall shall be positioned and laid out in advance to determine the position of the prefabricated structural column 100;

[0053] Plant reinforcement at the upper and lower connection floor slabs or beam bottoms of prefabricated structural columns 100. The depth, diameter and position of the planting reinforcement should meet the requirements of the node deepening drawing of prefabricated structural columns 100. The reserved length of the planting reinforcement is 300mm, and the corresponding number of stirrups is 3 φ8mm steel bars;

[0054] A forklift is used to lift the prefabricated structural column 100 and push it into the corresponding position. The lower part of the prefabricated structural column 100 stands on the floor. At the same time, 2φ12mm steel bars are respectively inserted into the limit holes of the upper and lower nodes to prevent the prefabricated structural column 100 from tipping over. At the same time, a laser level is used to ensure that the wall is vertical.

[0055] C30 fine stone concrete is used to fill and compact the upper and lower notches. Since the cross-sectional size of the prefabricated structural column 100 in this embodiment is 200x300mm, the above construction process is also applicable to the prefabricated structural column 100 of 200x200.

[0056] This technology not only simplifies the construction process of structural columns, effectively improves the quality of structural columns, and solves quality problems such as honeycombed and rough surfaces of traditional cast-in-place structural columns, but also avoids later rework and repairs, reduces construction costs, shortens construction period, and improves project construction quality and safety. It is in line with the development trend of construction and the concept of green construction, and has prospects for promotion and application.

[0057] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any changes or substitutions that can be easily thought of by any technician familiar with the technical field within the technical scope disclosed in the present invention should be included in the protection scope of the present invention.

Claims

1. A prefabricated structural column, characterized in that: It includes: The column is provided with a cavity along its extension direction, and both ends of the cavity in the extension direction are open for inserting the embedded steel bars arranged on the connecting floor slab, and both ends of the column are also provided with notches, each of which passes through the adjacent side of the column along the extension direction of the column and connects the outside and the cavity; as well as The steel bar structure is embedded in the column, extends in the same direction as the cavity, and at least partially surrounds the periphery of the cavity.

2. The prefabricated structural column according to claim 1, characterized in that: Both ends of the column are respectively provided with limiting holes connected to the cavity, the limiting holes correspond one-to-one to the two notches and pass through the column, and the prefabricated structural column also includes two groups of limiting rods, each group of the limiting rods is passed through the corresponding limiting holes and through the embedded steel bars provided on the connecting floor.

3. The prefabricated structural column according to claim 2, characterized in that: There are a plurality of the limiting holes at each end of the column, and the plurality of the limiting holes at each end are arranged at intervals along the extension direction of the column; The limiting rods of each group are provided with a plurality of limiting holes corresponding to each end.

4. The prefabricated structural column according to claim 1, characterized in that: The cavity includes a main body section and two open sections, the two open sections are respectively located at two ends of the column and are respectively connected to the two notches and the main body section, wherein the cross-sectional dimension of each open section is larger than the cross-sectional dimension of the main body section; The prefabricated structural column also includes two insulation plates, and the two insulation plates are respectively used to cover the connecting openings between the two open sections and the main section.

5. The prefabricated structural column according to claim 4, characterized in that: The steel bar structure parts located at the two ends of the column extend into the open section, are arranged around the outer periphery of the embedded reinforcement of the connecting floor slab, and are welded and connected to the embedded reinforcement of the connecting floor slab.

6. The prefabricated structural column according to claim 1, characterized in that: The cross-sectional dimensions of each notch are gradually reduced from a side away from the cavity to a side close to the cavity.

7. The prefabricated structural column according to claim 1, characterized in that: The steel structure includes a plurality of longitudinal bars and a plurality of stirrups embedded in the column, the plurality of longitudinal bars extending along the extension direction of the column and arranged at intervals around the outer periphery of the cavity, the plurality of stirrups being clamped around the longitudinal bars and arranged at intervals along the extension direction of the plurality of longitudinal bars.

8. The prefabricated structural column according to claim 7, characterized in that: A plurality of stirrups are located between the two notches.

9. The prefabricated structural column according to claim 8, characterized in that: The distance between two adjacent stirrups is a, which satisfies 190 mm ≤ a ≤ 210 mm.

10. The prefabricated structural column according to claim 1, characterized in that: The prefabricated structural column also includes a supporting column, which is connected to the column body, and the column body extends laterally to support the crossbeam of the masonry; The steel bar structure also includes main steel bars and extended steel bars. The main steel bars are buried in the column and at least partially surround the periphery of the cavity. The extended steel bars are buried in the support column and connected to the main steel bars. The extended steel bars partially extend into the beam to be welded to the embedded bars of the beam.

Images