Support-free steel-concrete combined prefabricated column

Abstract

The utility model relates to the technical field of building construction, in particular to a support-free steel-concrete combined prefabricated column, which comprises a steel-concrete column, the steel-concrete column comprises a concrete column body and a core column, the core column comprises a butt joint body and an anchoring steel bar fixed at the top of the butt joint body, the anchoring steel bar is pre-embedded in the concrete column body, and the butt joint body is connected with the anchoring steel bar. The butt joint body comprises a column base bottom plate, and a butt joint hole is formed in the column base bottom plate. The short column foundation comprises a concrete foundation and an embedded part, the embedded part comprises a foundation bolt used for being arranged in the butt joint hole in a penetrating mode, the lower portion of the foundation bolt is embedded in the concrete foundation, and a leveling nut and a fastening nut used for fastening the column base bottom plate are screwed to the upper portion of the foundation bolt. According to the utility model, the technical problem of complicated positioning and butting operation of the precast concrete column in the prior art is solved, and the construction procedures of snapping line positioning, inclined support fixing, elevation and perpendicularity adjusting, concrete pouring template trepanning and plugging and the like can be reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of building construction, in particular to a support-free steel-concrete combined prefabricated column. Background Art

[0002] During the hoisting process of precast concrete columns, positioning and docking of precast concrete columns are essential links in construction. Traditional hoisting operations mostly use line positioning and sleeve grouting or grout anchor connection methods. This method has the problems of high precision requirements for longitudinal reinforcement reservation and multiple component hoisting and positioning measures, resulting in low turnover efficiency of hoisting equipment and unstable cast-in-place quality of precast column connection nodes, which in turn affects the installation accuracy and docking quality of precast columns.

[0003] In summary, there is an urgent need for a prefabricated column structure that is easy to position to solve the problems existing in the prior art. Utility Model Content

[0004] The purpose of this utility model is to provide a support-free steel-concrete composite prefabricated column to solve the technical problems of complex positioning and docking operations of prefabricated concrete columns in the prior art. The specific technical solution is as follows:

[0005] The utility model provides a support-free steel-concrete composite prefabricated column, comprising a steel-concrete column, the steel-concrete column comprising a concrete column body and a core column, the core column comprising a docking body and an anchoring steel bar fixed to the top of the docking body, the anchoring steel bar being pre-embedded in the concrete column body, the docking body comprising a column foot bottom plate, and a docking hole being provided on the column foot bottom plate; a short column foundation, the short column foundation comprising a concrete foundation and an embedded part, the embedded part comprising an anchor bolt for passing through the docking hole, the lower part of the anchor bolt being pre-embedded in the concrete foundation, and the upper part of the anchor bolt being screwed with a leveling nut and a fastening nut for fastening the column foot bottom plate.

[0006] A further improvement of the support-free steel-concrete composite prefabricated column of the present invention is that the docking body also includes a top plate and a longitudinal plate, the longitudinal plate is fixed between the top plate and the column foot bottom plate, one end of the anchor steel bar is fixed to the top plate, and the top plate is anchored in the concrete column body.

[0007] A further improvement of the support-free steel-concrete composite prefabricated column of the present invention is that the number of the longitudinal plates is at least two, and the at least two longitudinal plates are arranged radially.

[0008] A further improvement of the support-free steel-concrete composite prefabricated column of the present invention is that the butt joint body further comprises a reinforcing rib plate, and the reinforcing rib plate is fixed between two adjacent longitudinal plates.

[0009] A further improvement of the support-free steel-concrete composite prefabricated column of the present invention is that a grouting hole is reserved on the side of the concrete column, a grouting channel is reserved inside the concrete column, a first blanking hole connected to the grouting channel is opened on the top plate, and a second blanking hole corresponding to the first blanking hole is opened on the bottom plate.

[0010] A further improvement of the support-free steel-concrete composite prefabricated column of the present invention is that the number of the anchor bolts is multiple, the number of the docking holes is the same as the number of the anchor bolts, and the docking holes are arranged in a one-to-one correspondence with the anchor bolts.

[0011] A further improvement of the support-free steel-concrete composite prefabricated column of the present invention is that the embedded part further includes a positioning plate, and the lower parts of the plurality of anchor bolts are fixed at intervals on the positioning plate.

[0012] A further improvement of the support-free steel-concrete composite prefabricated column of the present invention is that the lower end of the anchor bolt extends downward from the positioning plate to form a hook section.

[0013] A further improvement of the support-free steel-concrete composite prefabricated column of the present invention is that an upper pad and a lower pad are passed through the anchor bolt, the upper pad is located above the lower pad, the upper pad and the lower pad are located between the leveling nut and the fastening nut, and the upper pad and the lower pad are respectively used to pad the upper surface and lower surface of the column foot bottom plate.

[0014] A further improvement of the support-free steel-concrete composite prefabricated column of the present invention is that the number of the fastening nuts is two, and a fastening pad is further provided on the anchor bolt, and the fastening pad is located between the two fastening nuts.

[0015] The application of the technical solution of the utility model has the following beneficial effects:

[0016] This new support-free steel-concrete composite precast column is designed to be positioned and docked by directly inserting the anchor bolts of the short column foundation into the docking holes of the column base plate of the steel-concrete composite column and fastening them with a fastening nut. This solves the technical problem of complex positioning and docking operations of precast concrete columns in the existing technology. This new design can reduce construction processes such as line positioning, diagonal support fixation, elevation and verticality adjustment, and concrete pouring template hole opening and sealing. It can significantly improve on-site construction efficiency and increase the turnover rate of construction auxiliary materials such as lifting equipment. It also helps improve project quality and reduce construction costs.

[0017] In addition to the above-described purposes, features and advantages, the present invention has other purposes, features and advantages. The present invention will be further described in detail below with reference to the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] The accompanying drawings, which constitute part of this application, are intended to provide a further understanding of the present invention. The exemplary embodiments of the present invention and their descriptions are intended to explain the present invention and do not constitute an improper limitation of the present invention. In the accompanying drawings:

[0019] Figure 1 This is a schematic diagram of the overall structure of the support-free steel-concrete composite prefabricated column including longitudinal steel bars of the utility model;

[0020] Figure 2 This is a schematic diagram of the overall structure of the utility model's support-free steel-concrete composite prefabricated column that does not include longitudinal reinforcement;

[0021] Figure 3 This is the overall side view of the support-free steel-concrete composite prefabricated column of the utility model without longitudinal reinforcement;

[0022] Figure 4 This is a schematic structural diagram of the steel-concrete composite prefabricated column without support including longitudinal reinforcement;

[0023] Figure 5 This is a structural diagram of the concrete column body of the support-free steel-concrete composite prefabricated column of the utility model including longitudinal steel bars;

[0024] Figure 6 This is a structural diagram of the core column of the utility model's support-free steel-concrete composite prefabricated column;

[0025] Figure 7 This is a schematic structural diagram of the short column foundation of the utility model's support-free steel-concrete composite prefabricated column including longitudinal reinforcement;

[0026] Figure 8 This is a structural diagram of the concrete foundation of the support-free steel-concrete composite prefabricated column of the utility model including longitudinal steel bars;

[0027] Figure 9 It is a structural schematic diagram of the embedded parts of the support-free steel-concrete composite prefabricated column of the utility model.

[0028] Among them, 1. Concrete column; 101. Grouting hole; 2. Core column; 201. Anchor steel bar; 202. Top plate; 203. Longitudinal plate; 204. Reinforcement plate; 205. Column foot bottom plate; 3. Embedded parts; 301. Fastening nut; 302. Fastening pad; 303. Upper pad; 304. Lower pad; 305. Leveling nut; 306. Anchor screw; 307. Positioning plate; 4. Concrete foundation. DETAILED DESCRIPTION

[0029] The embodiments of the present invention are described in detail below with reference to the accompanying drawings.

[0030] See also Figures 1 to 9As shown, a support-free steel-concrete composite prefabricated column includes a steel-concrete column, which includes a concrete column body 1 and a core column 2, the core column 2 includes a docking body and an anchoring steel bar 201 fixed to the top of the docking body, the anchoring steel bar 201 is embedded in the concrete column body 1, the docking body includes a column foot plate 205, and a docking hole is provided on the column foot plate 205; a short column foundation, which includes a concrete foundation 4 and an embedded part 3, the embedded part 3 includes an anchor screw 306 for passing through the docking hole, the lower part of the anchor screw 306 is embedded in the concrete foundation 4, and the upper part of the anchor screw 306 is screwed with a leveling nut 305 and a fastening nut 301 for fastening the column foot plate 205.

[0031] In this embodiment, the steel-composite column and the short column foundation are both prefabricated concrete parts, and the docking area is constructed by pouring concrete on site after the docking is completed. The longitudinal steel bars of the concrete column 1 extend a distance from both ends of the precast concrete, and the longitudinal steel bars of the short column foundation extend a distance from the upper end of the precast concrete so that they can be anchored in the concrete when the concrete is poured in place. The longitudinal steel bar connection structure area preferably uses high-performance concrete (elastic modulus between 40 and 50 GPa) as the anchoring material, which greatly shortens the anchoring length of the longitudinal steel bar and reduces wet operations. The core column 2 is made of steel, and the core column 2 is used as a temporary fixing measure for hoisting construction. The lower part of the short column foundation is provided with an expanded foundation to ensure the stability of the entire support-free steel-concrete composite prefabricated column structure.

[0032] The utility model prefabricates the concrete column body 1 and the core column 2 in a processing plant, and then quickly assembles them with the anchor screws 306 pre-buried in the short column foundation during on-site hoisting. The anchor screws 306 can realize the functions of component positioning, elevation and verticality adjustment, forming a reliable assembled integral prefabricated column structure, reducing construction measures, lowering construction difficulty, and improving project quality.

[0033] Preferably, Figure 6 As shown, the docking body also includes a top plate 202 and a longitudinal plate 203. The longitudinal plate 203 is fixed between the top plate 202 and the column base plate 205. One end of the anchor bar 201 is fixed to the top plate 202. The top plate 202 is anchored within the concrete column 1. Specifically, the longitudinal direction is perpendicular to the top plate 202 and the column base plate 205. The longitudinal plate 203, the top plate 202, and the bottom plate are all made of steel plates.

[0034] Preferably, the number of the longitudinal plates 203 is at least two, and the at least two longitudinal plates 203 are arranged radially. In this embodiment, the number of the longitudinal plates 203 is four, and the four longitudinal plates 203 are arranged in a cross shape. The four longitudinal plates 203 do not intersect at the center, but have a space for concrete to pass through.

[0035] Preferably, the docking body further includes a reinforcing rib plate 204, which is fixed between two adjacent longitudinal plates 203. Specifically, at least two reinforcing rib plates 204 are provided between each two adjacent longitudinal plates 203 to improve the strength of the entire docking body and prevent deformation and damage during docking. The reinforcing rib plates 204 can be made of steel plates.

[0036] Preferably, Figures 1 to 5 As shown, the concrete column 1 has a grouting hole 101 reserved on the side, a grouting channel reserved inside the concrete column 1, a first blanking hole connected to the grouting channel is provided on the top plate 202, and a second blanking hole corresponding to the first blanking hole is provided on the bottom plate. When manufacturing a steel-concrete hybrid column, the column reinforcement is first tied and arranged, then placed in a customized mold together with the core column 2. Concrete is poured to form the shell of the concrete column 1. Grouting holes 101 are reserved in the shell for on-site concrete pouring. These grouting holes 101 are connected to the first blanking hole at the bottom of the column through the grouting channel. Both the first and second blanking holes allow concrete to pass through.

[0037] Preferably, Figure 9 As shown, there are multiple anchor screws 306, and the number of the docking holes is the same as the number of the anchor screws 306, and the docking holes are arranged in a one-to-one correspondence with the anchor screws 306. Multiple anchor screws 306 can further ensure the stability of docking.

[0038] Preferably, the embedded part 3 further includes a positioning plate 307, and the lower parts of the plurality of anchor screws 306 are fixed at intervals on the positioning plate 307. The positioning plate 307 can fix the anchor screws 306 as a whole and position the anchor screws 306 to prevent the short column foundation from shifting during the prefabrication and pouring process.

[0039] Preferably, the lower end of the anchor screw 306 extends downward from the positioning plate 307 to form a hook section, thereby improving the pull-out resistance of the anchor screw 306 and ensuring the anchoring stability of the anchor screw 306.

[0040] Preferably, an upper pad 303 and a lower pad 304 are provided on the anchor screw 306. The upper pad 303 is located above the lower pad 304 and between the leveling nut 305 and the fastening nut 301. The upper pad 303 and the lower pad 304 are respectively used to cushion the upper and lower surfaces of the column foot plate 205. The upper pad 303 and the lower pad 304 can further increase the fixing area with the column foot plate 205, ensuring the stability of the fixing of the column foot plate 205.

[0041] Preferably, there are two fastening nuts 301, and a fastening pad 302 is provided on the anchor screw 306, positioned between the two fastening nuts 301. The upper portion of the anchor screw 306 is provided with threads for the fastening nuts 301 to engage. The two fastening nuts 301 ensure tightness and prevent thread slippage. The leveling nut 305 allows for rapid adjustment of the prefabricated column installation elevation and verticality, eliminating the need for diagonal supports in traditional prefabricated column construction and enabling rapid unhooking of lifting equipment.

[0042] During construction, if Figures 1 to 9 As shown, the concrete column 1 is first reinforced with steel and then installed in a factory mold. The core column 2 and related pre-embedded parts are then placed in place. Concrete is then poured to form the prefabricated steel-concrete composite column. The longitudinal reinforcement of the concrete column 1 extends a certain length at both ends as required by the design. The column foot plate 205 in the core column 2 has holes reserved for connection to the anchor bolts 306.

[0043] After tying the foundation steel bars and installing the positioning embedded parts 3 and related pre-embedded parts in the factory processing mold, the short column foundation is formed by pouring concrete. The longitudinal steel bars of the short column foundation extend a certain length from the end face according to design requirements; the anchor bolts 306 are pre-welded and formed through the positioning plates 307 in the processing factory, and the fastening nuts 301, fastening pads 302, upper pads 303, lower pads 304, and leveling nuts 305 are provided as a complete set.

[0044] During on-site hoisting, after the short column foundation is hoisted into place and fixed, the lower pad 304 is adjusted to meet the design elevation through the leveling nut 305, and then the steel-concrete composite column is hoisted into place. After the anchor screw 306 is inserted into the docking hole of the column foot bottom plate 205 to form a fit, the upper pad 303, the fastening pad 302, and the fastening nut 301 are installed in sequence and initially tightened. After the verticality of the prefabricated steel-concrete composite column meets the requirements, the fastening nut 301 is finally tightened into place;

[0045] After the above construction is completed, the crane equipment can be quickly unhooked, and there is no need to set up inclined supports for the steel-concrete composite columns.

[0046] After the above installation process is completed, the longitudinal reinforcement of the steel-concrete composite column and the short column foundation extends a certain length in the connection structure area to form a staggered lap structure, and the node area formwork is installed. After the node area is poured, an assembled integral structural system is finally formed.

[0047] This new support-free precast steel-concrete composite column is designed to be positioned and docked by directly inserting the anchor bolts 306 of the short column foundation into the docking holes of the column foot plate 205 of the steel-concrete composite column and fastening them with the fastening nuts 301. This solves the technical problem of complex positioning and docking operations in the existing precast concrete column technology. This new design reduces construction steps such as line positioning, diagonal support fixation, elevation and verticality adjustment, and concrete pouring template hole opening and sealing. This significantly improves on-site construction efficiency and increases the turnover rate of construction auxiliary materials such as lifting equipment. It also helps improve project quality and reduce construction costs.

[0048] The above description is merely a preferred embodiment of the present invention and is not intended to limit the present invention. Those skilled in the art will readily appreciate that the present invention is susceptible to various modifications and variations. Any modifications, equivalent substitutions, or improvements made within the spirit and principles of the present invention shall be included within the scope of protection of the present invention.

Claims

1. A support-free steel-concrete composite prefabricated column, characterized in that: include: A steel hybrid column, comprising a concrete column body (1) and a core column (2), wherein the core column (2) comprises a butt joint and an anchoring steel bar (201) fixed to the top of the butt joint, wherein the anchoring steel bar (201) is pre-buried inside the concrete column body (1), and the butt joint comprises a column foot plate (205), wherein a butt joint hole is provided on the column foot plate (205); A short column foundation comprises a concrete foundation (4) and an embedded part (3), wherein the embedded part (3) comprises an anchor screw (306) for passing through the docking hole, the lower portion of the anchor screw (306) is embedded in the concrete foundation (4), and the upper portion of the anchor screw (306) is screwed with a leveling nut (305) and a fastening nut (301) for fastening the column foot plate (205).

2. The support-free steel-concrete composite prefabricated column according to claim 1 is characterized in that: The docking body further comprises a top plate (202) and a longitudinal plate (203), wherein the longitudinal plate (203) is fixed between the top plate (202) and the column foot bottom plate (205), one end of the anchoring steel bar (201) is fixed on the top plate (202), and the top plate (202) is anchored in the concrete column (1).

3. The support-free steel-concrete composite prefabricated column according to claim 2 is characterized in that: The number of the longitudinal plates (203) is at least two, and the at least two longitudinal plates (203) are arranged radially.

4. The support-free steel-concrete composite prefabricated column according to claim 3 is characterized in that: The docking body further comprises a reinforcing rib plate (204), and the reinforcing rib plate (204) is fixed between two adjacent longitudinal plates (203).

5. The support-free steel-concrete composite prefabricated column according to claim 2 is characterized in that: A grouting hole (101) is reserved on the side of the concrete column (1), a grouting channel is reserved inside the concrete column (1), a first material discharge hole communicating with the grouting channel is provided on the top plate (202), and a second material discharge hole corresponding to the first material discharge hole is provided on the bottom plate.

6. The support-free steel-concrete composite prefabricated column according to claim 1 is characterized in that: There are multiple anchor screws (306), the number of the docking holes is the same as the number of the anchor screws (306), and the docking holes and the anchor screws (306) are arranged in a one-to-one correspondence.

7. The support-free steel-concrete composite prefabricated column according to claim 6 is characterized in that: The embedded part (3) further comprises a positioning plate (307), and the lower parts of the plurality of anchor screws (306) are fixed at intervals on the positioning plate (307).

8. The support-free steel-concrete composite prefabricated column according to claim 7 is characterized in that: The lower end of the anchor screw (306) extends downward from the positioning plate (307) to form a hook section.

9. The support-free steel-concrete composite prefabricated column according to claim 1 is characterized in that: An upper pad (303) and a lower pad (304) are provided on the anchor screw (306), the upper pad (303) is located above the lower pad (304), the upper pad (303) and the lower pad (304) are located between the leveling nut (305) and the fastening nut (301), and the upper pad (303) and the lower pad (304) are used to be cushioned on the upper surface and the lower surface of the column foot bottom plate (205), respectively.

10. The support-free steel-concrete composite prefabricated column according to claim 1 is characterized in that: The number of the fastening nuts (301) is two, and a fastening pad (302) is also provided on the anchor screw (306), and the fastening pad (302) is located between the two fastening nuts (301).

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