Prefabricated steel-concrete column and composite structure

Abstract

The present application relates to the technical field of prefabricated building components, improves the problem of inconvenience in installing prefabricated concrete columns in the prior art, and discloses a prefabricated steel-concrete column and a combined structure, which includes a fixed section and a combined section. The end of the combined section close to the ground is slidably connected to a first mold sleeve, and the end of the fixed section away from the ground is slidably connected to a second mold sleeve. The second mold sleeve is provided with a pouring hole, and the first mold sleeve is provided with an overflow hole. The first mold sleeve and the second mold sleeve are both formed by connecting a number of side panels end to end, and the side panels are detachably connected to each other. The first mold sleeve and the second mold sleeve are detachably connected through a fixing piece after they are abutted. The present application can form a pouring space by sliding the first mold sleeve and the second mold sleeve until they abut each other to add concrete, thereby providing a structure that is convenient for forming a pouring space, thereby increasing the efficiency of mold setting and increasing the efficiency of prefabricated column installation.

Description

Technical Field

[0001] The present application relates to the technical field of prefabricated building components, and in particular to a prefabricated steel-concrete column and a composite structure. Background Art

[0002] Prefabricated steel-concrete columns refer to concrete columns that are prefabricated in a prefabrication factory according to the specified design dimensions, then cast into shape and assembled on site.

[0003] The installation of precast steel-concrete columns in existing technology generally requires the following steps: 1. Arrange the reserved rebar and holes on the floor slab according to the design requirements. 2. Use a crane to lift the precast column and align it with the holes and rebar in the floor slab. 3. Slowly lower the precast column and align it with the rebar on the floor slab. 4. Use a level and plumb line to check the horizontality and verticality of the precast column and make any necessary adjustments. 5. Grout the reserved holes and seal them with formwork. 6. After the grout has hardened, remove the formwork and clean and inspect it.

[0004] Regarding the aforementioned related technologies, when a crane maneuvers the precast columns downward for installation, manual support is required to align them for correct positioning, secure them, and then proceed with formwork pouring to form the reinforced concrete structure. This presents at least two technical issues: first, the need for manual support for alignment creates operational risks; second, the formwork must be laid and secured after the precast columns are assembled. Summary of the Invention

[0005] In order to improve the problem of inconvenience in installation of existing prefabricated concrete columns.

[0006] In one aspect, the present application provides a prefabricated steel-concrete column.

[0007] The following technical solutions are adopted:

[0008] A prefabricated steel-concrete column comprises a fixed section and a combined section, wherein the fixed section is arranged in a building body, the combined section is connected to the end of the fixed section away from the ground along the direction of gravity from top to bottom, the end of the combined section close to the ground is slidably connected to a first mold sleeve along the length direction, and the end of the fixed section away from the ground is slidably connected to a second mold sleeve along the length direction. When the first mold sleeve and the second mold sleeve slide to abut each other, the inner wall of the first mold sleeve, the inner wall of the second mold sleeve, one end of the combined section and one end of the fixed section form a casting space, the second mold sleeve is provided with a casting hole, the first mold sleeve is provided with an overflow hole, the first mold sleeve and the second mold sleeve are both formed by connecting a number of side panels end to end, the several side panels are detachably connected to each other, and the first mold sleeve and the second mold sleeve are detachably connected through a fixing piece after abutting each other.

[0009] By adopting the above technical solution, after the assembled section is placed on the fixed section from top to bottom via a crane, the assembled section is temporarily fixed using reinforcements. Simultaneously, the first and second mold sleeves are slid into contact with each other, forming a casting space between the first and second mold sleeves. Concrete is then poured into the casting holes of the second mold sleeve until the concrete flows out of the overflow holes. The casting holes and overflow holes are then sealed until the concrete solidifies. The side panels are then removed in sequence to remove the first and second mold sleeves, completing the installation of the precast column. This provides a structure that facilitates the formation of a casting space, thereby increasing the efficiency of mold setup and precast column installation.

[0010] Optionally, the first mold sleeve is staggered with a plurality of first limit rods on a plane perpendicular to the length direction of the combination section, and a first blocking member is provided on the movement path of the combination section and the first limit rod to abut against the first limit rod to limit the continued movement of the first mold sleeve, and a second blocking member is provided on the inner wall of the end of the second mold sleeve away from the ground, extending into the extension plane of the fixed section length.

[0011] By adopting the above technical solution, when the first mold sleeve moves to the first blocking member, the first limit rods are blocked by the first blocking member, so that the first mold sleeve no longer moves under the action of gravity. At this time, it is convenient for the operator to lift the second mold sleeve to abut the first mold sleeve and fix the first mold sleeve and the second mold sleeve to facilitate casting.

[0012] Optionally, the combination section is provided with a first limiting bolt. When the first mold sleeve slides to the point where the first limiting rod abuts against the surface of the combination section, the first limiting bolt can pass through the outer wall of the first mold and be inserted into the combination section. The fixed section is provided with a second limiting bolt. When the second mold sleeve slides to the point where the second blocking member abuts against the surface of the fixed section, the second limiting bolt can pass through the outer wall of the second mold and be inserted into the fixed section.

[0013] By adopting the above technical solution, when the first mold sleeve is in a state where the first limiting rod abuts against the surface of the combination section, this state is the initial state, and the first mold sleeve is fixed by the first limiting bolt to facilitate the movement of the combination section and observe the relative position of the combination section and the fixed section during installation.

[0014] In another aspect, the present application provides a composite structure for prefabricated steel-concrete columns.

[0015] 4. The repairing kit for automotive dents, according to claim 1, wherein a bottom of the foot stand comprises a through-hole, and the two foot pieces comprise two bosses, wherein the bosses comprise a through-hole, a screw bolt, and a nut. The bosses comprise a through-hole, a screw bolt, and a nut. The bosses comprise a through-hole, a screw bolt, and a nut. The bosses comprise a through-hole, a screw bolt and a nut.

[0016] By adopting the above technical solution, when the combined section is controlled by the crane to sink toward the fixed section, the positioning frame preferentially contacts the support column on the fixed section. The positioning frame is observed and controlled by the crane to be sleeved on the support column. Several abutment blocks circumferentially abut against the outside of the support column. Due to the action of the elastic component, several abutment blocks apply a reaction force to the positioning frame with the support column as the axis and the center of the circle, driving the positioning frame to move to the center and align with the center of the support column. At this time, the crane operator observes the relative offset between the combined section and the positioning frame and makes adjustments so that the positioning frame is in the center of the combined section, thereby continuing to sink the combined section to the appropriate position, pre-fixing the combined section through reinforcements such as oblique supports, and moving the first mold sleeve and the second mold sleeve to form a casting space, and casting is carried out to complete the installation of the prefabricated column. This avoids the need to arrange personnel to support the docking when the combined section and the fixed section are docked, thereby increasing the efficiency of prefabricated column installation.

[0017] Optionally, a first chamfer is formed at one end of the abutment block close to the support column.

[0018] By adopting the above technical solution, when the abutting block abuts against the support column, the abutting block can more conveniently move relative to the support column due to the effect of the first chamfer.

[0019] Optionally, the positioning frame is polygonal, the abutment blocks are trapezoidal structures, and several abutment blocks abut against each other to form a polygonal frame structure corresponding to the positioning frame, and the abutment blocks are parallel to the sides of the positioning frame at corresponding positions.

[0020] By adopting the above technical solution, the fit between the positioning frame and the abutment block is tighter, so that when the abutment block abuts the support column, the relative force transmitted from the abutment block to the positioning frame is more uniform, so that the positioning frame can be moved to a suitable position to facilitate the sinking installation of the combined section.

[0021] Optionally, the elastic component includes two sliders, two elastic members and two push rods, the two sliders are connected to the inner wall of the side of the positioning frame in a sliding direction toward or away from each other, the two elastic members are respectively arranged at one end of the slider facing away from each other, and the elastic members are arranged along the movement path of the slider, one end of the two push rods is rotatably connected to the corresponding slider, and the other end is rotatably connected to the abutment block.

[0022] By adopting the above technical solution, the elastic member pushes the slider to slide to a position close to each other, so that the abutment blocks of the same structure are pushed by the abutment rod to always move toward the center direction of the positioning frame, so that the abutment blocks can provide relative force when abutting the support column. Setting two groups of sliders and abutment rods can increase the structural stability of the abutment blocks during movement.

[0023] Optionally, a limiting rod is provided in the middle of the abutment block in the vertical length direction, the positioning frame is provided with a limiting hole corresponding to the position of the limiting rod, and the limiting rod is slidably connected to the limiting hole.

[0024] By adopting the above technical solution, through the cooperation of the limiting rod and the limiting hole, the abutment block can obtain a more stable movement state when moving, so as to avoid the abutment block from deflecting.

[0025] Optionally, the support column is provided with an annular groove whose diameter is tangent to the inner wall of the space surrounded by the abutment blocks, and a plurality of insertion rods are arranged in a vertical array at one end of the combination section close to the positioning frame, and a plurality of first insertion holes are vertically passed through the positioning frame at positions corresponding to the insertion rods, and a second insertion hole is provided on the limiting rod. When the plurality of abutment blocks abut against each other, the first insertion hole is connected to the second insertion hole, and the insertion rod can pass through the first insertion hole and the second insertion hole in sequence.

[0026] By adopting the above technical solution, the abutment blocks are in a state of being squeezed by the support columns during the process of abutting against the support columns and continuing to sink with the positioning frame. At this time, several abutment blocks are separated from each other until the positioning frame sinks to the groove and the abutment blocks enter the groove. At this time, several abutment blocks abut against each other, and the first socket is connected to the second socket. Continuing to sink the combination section allows the insertion rod to enter the first socket and the second socket, thereby limiting the movement of the abutment blocks and making the positioning frame and the support columns relatively fixed, so that the structure is more stable during casting.

[0027] Optionally, a second chamfer is formed on the inner wall of the positioning frame close to the support column.

[0028] By adopting the above technical solution, the positioning frame provides guidance when being sleeved on the support column, so that the support column can fall into the middle of the positioning frame.

[0029] In summary, this application has at least one of the following beneficial effects:

[0030] 1. By sliding the first mold sleeve and the second mold sleeve until they abut each other, a pouring space is formed to add concrete, thereby providing a structure that facilitates the formation of the pouring space, thereby increasing the efficiency of mold setting and the efficiency of precast column installation;

[0031] 2. The positioning frame preferentially contacts the support column on the fixed section. Due to the action of the elastic component, several abutment blocks exert a reaction force on the positioning frame with the support column as the axis and the center of the circle, driving the positioning frame to move to the center and align with the center of the support column, so as to avoid the need to arrange personnel to support the docking when the combined section and the fixed section are docked, thereby increasing the efficiency of prefabricated column installation. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] Figure 1 This is a schematic diagram of the installation process structure of this embodiment;

[0033] Figure 2 This is a schematic diagram of the structure of the completed installation of this embodiment;

[0034] Figure 3 It is a schematic diagram of the cross-sectional structure of the combined structure;

[0035] Figure 4 2. It is a schematic diagram of the cross-sectional structure of the positioning column;

[0036] Figure 5 It is a schematic diagram of the positioning frame and the first limiting rod structure.

[0037] Explanation of reference numerals: 1. fixing section; 11. second matching hole; 12. supporting column; 121. groove; 13. second mold sleeve; 131. casting hole; 132. second blocking member; 133. second limiting bolt; 2. combination section; 21. first matching hole; 22. first mold sleeve; 221. side plate; 222. combination bolt; 223. outer edge; 224. fixing member; 225. overflow hole; 23. first limiting bolt; 24. first limiting rod; 241. Connecting bolt; 25. Insert rod; 3. Combined structure; 31. Positioning column; 311. Connecting groove; 312. Giving groove; 313. Through groove; 32. Connecting rod; 321. Rotating column; 33. Support rod; 34. Positioning frame; 341. Slide groove; 342. Limiting hole; 343. First insertion hole; 344. Second chamfer; 35. Abutment block; 351. First chamfer; 352. Limiting rod; 353. Second insertion hole; 41. Slider; 42. Elastic member; 43. Abutment rod. DETAILED DESCRIPTION

[0038] The following is combined with Figure 1 To the attached Figure 5 This application is described in further detail.

[0039] Example 1:

[0040] Reference Figure 1 and Figure 2This embodiment discloses a prefabricated steel-concrete column comprising a fixed section 1 and an assembled section 2. The fixed section 1 is installed within a building, typically a reinforced concrete structure extending from the lower level to the upper level. The assembled section 2 is lowered by a crane along the direction of gravity until it connects to the end of the fixed section 1, which is located away from the ground. The assembled section 2 is pre-fixed with reinforcements such as diagonal braces before concrete processing. For ease of description, the concrete column is described as a rectangular column, meaning both the fixed section 1 and the assembled section 2 have rectangular cross-sections. Polygonal or circular structures are also suitable for this embodiment. Furthermore, a first mold sleeve 22 is slidably connected to the end of the assembled section 2 near the ground along its length. The first mold sleeve 22 is a rectangular sleeve with an inner wall that defines the same cross-section as the assembled section 2. The first mold sleeve 22 extends outwardly from the end near the ground to form an outer edge 223. A second mold sleeve 13 is slidably connected to the end of the fixed section 1, which is located away from the ground. The second mold sleeve 13 has the same shape as the first mold sleeve 22 and is also provided with an outer edge 223. When the first mold sleeve 22 and the second mold sleeve 13 slide to abutment with their outer edges 223, the inner wall of the first mold sleeve 22, the inner wall of the second mold sleeve 13, one end of the assembly section 2, and one end of the fixed section 1 form a casting space. The second mold sleeve 13 is provided with a casting hole 131, and the first mold sleeve 22 is provided with a grouting hole 225. The grouting hole 225 is located at the position of the first mold sleeve 22 closest to the end of the assembly section 2. After grouting, if concrete overflows from the grouting hole 225, the grouting hole 225 is blocked, and grouting must continue to ensure that the amount of concrete inside is sufficient to fill the casting space. The first mold sleeve 22 and the second mold sleeve 13 are both formed by four side panels 221 connected end to end. The four side panels 221 are detachably connected to each other by combination bolts 222. After the first mold sleeve 22 and the second mold sleeve 13 are abutted, they are detachably connected by fixing parts 224. The fixing parts 224 are arranged on the outer edge 223, and the fixing parts 224 are fixing bolts and fixing nuts.

[0041] Reference Figures 1 to 5Furthermore, the first mold sleeve 22 is staggered with a plurality of first limiting rods 24 on a plane perpendicular to the length of the assembly section 2. Preferably, four first limiting rods 24 are selected and arranged in a crisscross pattern. The ends of the first limiting rods 24 are connected to the side panels 221 via connecting bolts 241. After pouring, the first limiting rods 24 are surrounded by concrete. A first blocking member is provided on the movement path between the assembly section 2 and the first limiting rods 24 to abut against the first limiting rods 24 to limit further movement of the first mold sleeve 22. This state is generally achieved when the assembly section 2 is pre-fixed and the first mold sleeve 22 is slid to the first blocking member, causing the first mold sleeve 22 to be in a relatively stationary state, thereby facilitating operation by the operator. A second blocking member 132 is provided on the inner wall of the end of the second mold sleeve 13 away from the ground, extending into the extension plane of the fixed section 1. The second blocking member 132 is used to prevent the second mold sleeve 13 from sliding along the fixed section 1 under the action of gravity. When the first mold sleeve 22 moves to the first blocking member, the first limit rods 24 are blocked by the first blocking member, so that the first mold sleeve 22 no longer moves under the action of gravity. At this time, it is convenient for the operator to lift the second mold sleeve 13 to the abutment position with the first mold sleeve 22, and fix the first mold sleeve 22 and the second mold sleeve 13 to facilitate pouring.

[0042] Reference Figure 1 and Figure 2 The combined section 2 is provided with a first limiting bolt 23. When the first mold sleeve 22 slides to the point where the first limiting rod 24 abuts against the surface of the combined section 2, the first limiting bolt 23 can pass through the outer wall of the first mold sleeve 22 and be inserted into the combined section 2. The first limiting bolt 23 can pass through the first mold sleeve 22 using the overflow hole 225 on the first mold sleeve 22. The combined section 2 is provided with a first matching hole 21 at the corresponding position for the first limiting bolt 23 to pass through. At the same time, the first limiting bolt 23 can serve as a sealing member to close the overflow hole 225. The fixed section 1 is provided with a second limiting bolt 133. When the second mold sleeve 13 slides to the point where the second blocking member 132 abuts against the surface of the fixed section 1, the second limiting bolt 133 can pass through the outer wall of the second mold and be inserted into the fixed section 1. Similarly, the second stopper 133 can be inserted through the second mold sleeve 13 using the casting hole 131 on the second mold sleeve 13. The fixed section 1 has a corresponding second mating hole 11 for the second stopper 133 to pass through. When the first mold sleeve 22 is in the initial state, with the first stopper rod 24 abutting the surface of the assembly section 2, the first stopper 23 secures the first mold sleeve 22, facilitating movement of the assembly section 2 and observing the relative position of the assembly section 2 and the fixed section 1 during installation.

[0043] The implementation principle of this embodiment is:

[0044] After the assembly section 2 is placed on the fixed section 1 from top to bottom via a crane, the assembly section 2 is temporarily fixed using reinforcements. Simultaneously, the first mold sleeve 22 and the second mold sleeve 13 are slid into contact with each other, forming a casting space between the first mold sleeve 22 and the second mold sleeve 13. Concrete is then poured into the casting holes 131 of the second mold sleeve 13 until the concrete flows out of the overflow holes 225. The casting holes 131 and the overflow holes 225 are then sealed until the concrete solidifies. The side panels 221 are then removed in sequence to remove the first mold sleeve 22 and the second mold sleeve 13, completing the installation of the precast column. This provides a structure that facilitates the formation of a casting space, thereby increasing the efficiency of mold setup and precast column installation.

[0045] Example 2:

[0046] Reference Figures 3 to 5 , this embodiment provides a combination structure 3 for connecting the combination section 2 and the fixed section 1 of a prefabricated steel concrete column, which is used to enable the relative position of the combination section 2 to be corrected when it is installed on the fixed section 1. The combination structure 3 includes: a positioning column 31, a connecting rod 32, a support rod 33 and a positioning frame 34. The positioning column 31 is a rectangular column. The positioning column 31 is vertically arranged at the end of the combination section 2 close to the ground. The positioning column 31 is provided with a connecting groove 311 along the central axis, and the connecting rod 32 is slidably connected to the connecting groove 311. A clearance groove 312 is provided at the end of the positioning column 31 close to the ground. The clearance groove 312 is triangular, and one corner of the clearance groove 312 is connected to the connecting groove 311. One side of the clearance groove 312 is flush with the lower surface of the positioning column 31. The outer wall of the positioning column 31 is provided with a through slot 313 along the direction of the connecting groove 311. The through slot 313 communicates with the connecting groove 311. The connecting rod 32 is provided with a rotating post 321 that can slide in the through slot 313. The connecting rod 32 can slide in the connecting groove 311 to the clearance slot 312 for rotation. Preferably, the end of the connecting rod 32 away from the rotating post 321 is ball-hinged to a support rod 33, and one end of the support rod 33 is fixedly connected to the positioning frame 34. There are four support rods 33, which are adaptively bent to make room for the support column 12. The ends of the support rods 33 are connected to a plate, which is ball-hinged to the connecting rod 32 via the plate. Both the connecting rod 32 and the support rod 33 can be retracted into the connecting groove 311 or the clearance slot 312. During grouting, concrete can enter the connecting groove 311 and the clearance slot 312 through the through slot 313. For the convenience of description, the positioning frame 34 in this embodiment is a rectangular frame, but other polygonal structures are also acceptable. Four slots 341 are arranged along the inner wall of the positioning frame 34 in a circumferential array along its length. Abutment blocks 35 are slidably connected within these slots, each of which slides away from or toward the center of the positioning frame 34. The positioning frame 34 is equipped with several elastic components corresponding to the positions of the abutment blocks 35, which tend to move the abutment blocks 35 toward the center of the positioning frame 34. A support column 12 is vertically mounted at the center of the end of the fixed section 1 that is away from the ground. The outer diameter of the support column 12 is larger than the diameter of the horizontal plane of the space enclosed by the four abutment blocks 35.

[0047] Reference Figures 3 to 5 Furthermore, the four sides of the middle mouth-shaped structure of the well-shaped structure surrounded by the first limiting rod 24 are smaller than the four sides of the positioning frame 34, so that the positioning frame 34 is used as the first blocking member.

[0048] Reference Figures 3 to 5 Furthermore, the abutment block 35 is a trapezoidal structure, and a first chamfer 351 is provided at one end of the abutment block 35 close to the support column 12. When the abutment block 35 abuts the support column 12, the abutment block 35 can more conveniently move relative to the support column 12 due to the action of the first chamfer 351. The four abutment blocks 35 abut against each other to form a quadrilateral frame structure corresponding to the positioning frame 34. The abutment blocks 35 are parallel to the sides of the positioning frame 34 at the corresponding positions, and the elastic components are arranged in parallel spaces. This makes the fit between the positioning frame 34 and the abutment block 35 tighter, so that when the abutment block 35 abuts the support column 12, the relative force of the support column 12 transmitted from the abutment block 35 to the positioning frame 34 is more uniform, so that the positioning frame 34 can be moved to a suitable position to facilitate the sinking installation of the combined section 2.

[0049] Reference Figures 3 to 5 Furthermore, the elastic assembly includes two sliders 41, two elastic members 42, and two abutting rods 43. The two sliders 41 are connected to the inner wall of the side of the positioning frame 34 in a direction of sliding toward or away from each other. The two elastic members 42 are respectively provided at the ends of the sliders 41 that are away from each other, and the elastic members 42 are arranged along the movement path of the sliders 41. One end of the two abutting rods 43 is rotationally connected to the corresponding slider 41, and the other end is rotationally connected to the abutting block 35. The elastic members 42 push the sliders 41 to slide toward a position close to each other, so that the abutting blocks 35 of the same structure are pushed by the abutting rods 43 to always move toward the center of the positioning frame 34, so that the abutting blocks 35 can provide relative force when abutting the support column 12. The provision of two sets of sliders 41 and abutting rods 43 can increase the structural stability of the abutting blocks 35 during movement.

[0050] Reference Figures 3 to 5 Furthermore, a limiting rod 352 is provided in the middle of the vertical length direction of the abutment block 35, and a limiting hole 342 is formed in the positioning frame 34 corresponding to the position of the limiting rod 352. The limiting rod 352 is slidably connected to the limiting hole 342. The cooperation between the limiting rod 352 and the limiting hole 342 enables the abutment block 35 to achieve a more stable motion state during movement, thereby preventing the abutment block 35 from deflecting.

[0051] Reference Figures 3 to 5Furthermore, the support column 12 is provided with an annular groove 121 having a diameter tangent to the inner wall of the space enclosed by the abutment blocks 35. The diameter of the lower section of the support column 12 and the groove 121 is larger than the range of the inclined surface provided by the abutment blocks 35, so that the positioning frame 34 can be mounted in the groove 121. A plurality of insertion rods 25 are arranged in a vertical array at one end of the assembly section 2 near the positioning frame 34. The positioning frame 34 is vertically penetrated by a plurality of first insertion holes 343 at positions corresponding to the insertion rods 25. The limiting rod 352 is provided with a second insertion hole 353. When the plurality of abutment blocks 35 abut against each other, the first insertion hole 343 is connected to the second insertion hole 353, and the insertion rod 25 can pass through the first insertion hole 343 and the second insertion hole 353 in sequence. When the abutment blocks 35 abut the support columns 12 and continue to sink with the positioning frame 34, the abutment blocks 35 are all in a state of being squeezed by the support columns 12. At this time, several abutment blocks 35 separate from each other until the positioning frame 34 sinks to the groove 121, and the abutment blocks 35 enter the groove 121. At this time, several abutment blocks 35 abut against each other, and the first insertion hole 343 is connected to the second insertion hole 353. Continuing to sink the assembly section 2 allows the insertion rod 25 to enter the first insertion hole 343 and the second insertion hole 353, thereby limiting the movement of the abutment blocks 35, so that the positioning frame 34 and the support column 12 are relatively fixed, so that the structure is more stable during pouring.

[0052] Reference Figures 3 to 5 Furthermore, a second chamfer 344 is provided on the inner wall of the positioning frame 34 near the support column 12. When the positioning frame 34 is sleeved on the support column 12, it provides a guide so that the support column 12 can fall into the middle of the positioning frame 34.

[0053] The implementation principle of this embodiment is:

[0054] When the combined section 2 is controlled by the crane to sink toward the fixed section 1, the positioning frame 34 preferentially contacts the support column 12 on the fixed section 1. The positioning frame 34 is observed and controlled by the crane to be sleeved on the support column 12. Several abutment blocks 35 circumferentially abut against the outside of the support column 12. Due to the action of the elastic component, the several abutment blocks 35 apply a reaction force to the positioning frame 34 with the support column 12 as the axis and the center, driving the positioning frame 34 to move to the center and align with the center of the support column 12. At this time, the crane operator observes the relative offset between the combined section 2 and the positioning frame 34 and adjusts it so that the positioning frame 34 is in the center of the combined section 2, thereby continuing to sink the combined section 2 to the appropriate position, pre-fixing the combined section 2 with reinforcements such as inclined supports, and moving the first mold sleeve 22 and the second mold sleeve 13 to form a casting space, and then casting is carried out, thereby completing the installation of the precast column. This avoids the need for personnel to support the docking of the combined section 2 and the fixed section 1, thereby increasing the efficiency of precast column installation.

[0055] The above are all preferred embodiments of the present application, and are not intended to limit the scope of protection of the present application. Therefore, any equivalent changes made based on the structure, shape, and principle of the present application should be included in the scope of protection of the present application.

Claims

1. A composite structure for prefabricated steel-concrete columns, a prefabricated steel-concrete column, comprising a fixed section (1) and a composite section (2), wherein the fixed section (1) is arranged in a building, and the composite section (2) is connected to an end of the fixed section (1) away from the ground from top to bottom along the direction of gravity, characterized in that: The end of the combined section (2) close to the ground is slidably connected to the first mold sleeve (22) along the length direction, and the end of the fixed section (1) away from the ground is slidably connected to the second mold sleeve (13) along the length direction. When the first mold sleeve (22) and the second mold sleeve (13) slide to a mutually abutting position, the inner wall of the first mold sleeve (22), the inner wall of the second mold sleeve (13), one end of the combined section (2) and one end of the fixed section (1) enclose a casting space. The second mold sleeve (13) is provided with a casting hole (131). The first mold sleeve (22) is provided with an overflow hole (225). The first mold sleeve (22) and the second mold sleeve (13) are both formed by connecting a plurality of side plates (221) end to end. The plurality of side plates (221) are detachably connected to each other. After the first mold sleeve (22) and the second mold sleeve (13) are abutted, they are detachably connected through a fixing member (224). The combined structure comprises a positioning column (31), a connecting rod (32), a supporting rod (33) and a positioning frame (34), wherein the positioning column (31) is arranged at one end of the combined section (2) close to the ground, the positioning column (31) is provided with a connecting groove (311) along the central axis, the connecting rod (32) is slidably connected to the connecting groove (311), the positioning column (31) is provided with a yielding groove (312) at one end close to the ground, the yielding groove (312) is communicated with the connecting groove (311), the outer wall of the positioning column (31) is provided with a through groove (313) along the direction of the connecting groove (311), the through groove (313) is communicated with the connecting groove (311), the connecting rod (32) is provided with a rotating column (321) that can slide in the through groove (313), and the The connecting rod (32) can slide in the connecting groove (311) to the giving way groove (312) for rotation. The end of the connecting rod (32) away from the rotating column (321) is ball-hinged to the support rod (33). One end of the support rod (33) is fixed to the positioning frame (34). A plurality of abutment blocks (35) are slidably connected in the inner circumference of the positioning frame (34). A plurality of elastic components corresponding to the positions of the abutment blocks (35) are provided in the positioning frame (34). The elastic components make the abutment blocks (35) have a tendency to move toward the center direction of the positioning frame (34). A support column (12) is vertically provided at the center of the end of the fixed section (1) away from the ground. The outer diameter of the support column (12) is larger than the diameter of the space surrounded by the plurality of abutment blocks (35).

2. The combined structure for prefabricated steel-concrete columns according to claim 1, characterized in that: One end of the abutment block (35) close to the support column (12) is provided with a first chamfer (351).

3. The combined structure for prefabricated steel-concrete columns according to claim 2, characterized in that: The positioning frame (34) is polygonal, the abutment block (35) is a trapezoidal structure, and a plurality of the abutment blocks (35) abut against each other to form a polygonal frame structure corresponding to the positioning frame (34). The abutment blocks (35) are parallel to the side of the positioning frame (34) at the corresponding position.

4. The combined structure for prefabricated steel-concrete columns according to claim 3, characterized in that: The elastic component includes two sliders (41), two elastic members (42) and two abutting rods (43). The two sliders (41) are connected to the inner wall of the side of the positioning frame (34) by sliding in a direction of approaching or moving away from each other. The two elastic members (42) are respectively arranged at one end of the sliders (41) that are away from each other, and the elastic members (42) are arranged along the movement path of the sliders (41). One end of the two abutting rods (43) is rotatably connected to the corresponding sliders (41), and the other end is rotatably connected to the abutting block (35).

5. The combined structure for prefabricated steel-concrete columns according to claim 4, characterized in that: A limiting rod (352) is provided in the middle of the abutment block (35) in the vertical length direction, and the positioning frame (34) is provided with a limiting hole (342) corresponding to the position of the limiting rod (352), and the limiting rod (352) is slidably connected to the limiting hole (342).

6. The combined structure for prefabricated steel-concrete columns according to claim 5, characterized in that: The support column (12) is provided with an annular groove (121) whose diameter is tangent to the inner wall of the space surrounded by the abutment blocks (35); a plurality of insertion rods (25) are arranged in a vertical array at one end of the combination section (2) close to the positioning frame (34); a plurality of first insertion holes (343) corresponding to the insertion rods (25) are vertically passed through the positioning frame (34); a second insertion hole (353) is provided on the limiting rod (352); when the plurality of abutment blocks (35) abut against each other, the first insertion hole (343) is communicated with the second insertion hole (353); and the insertion rod (25) can pass through the first insertion hole (343) and the second insertion hole (353) in sequence.

7. The combined structure for prefabricated steel-concrete columns according to claim 1, characterized in that: The positioning frame (34) is provided with a second chamfer (344) in the circumferential direction of the inner wall close to the support column (12).

Images