Prefabricated part cavity column structure and construction method thereof

Abstract

The invention relates to the technical field of prefabricated parts in building construction, in particular to a prefabricated part cavity column structure and a construction method.The prefabricated part cavity column structure comprises a reinforcement cage frame, a hollow formwork column arranged outside the reinforcement cage frame in a sleeving mode and a deformation compensation mechanism comprising a horizontal compensation unit and a vertical compensation unit. Adjustable positioning in the horizontal direction is achieved through the positioning strip set and the locking piece, meanwhile, vertical position adjustment is completed through the vertical positioning block and the locking piece, and the stability and adaptability of the overall structure are guaranteed. In addition, details such as a reserved inserting hole set, an embedded groove and an end limiting unit are optimally designed, and the assembly precision and the construction efficiency are effectively improved. The effects that the installation convenience of the prefabricated part is improved, the structural stability is enhanced, and the construction error is reduced are achieved.

Description

Technical Field

[0001] This application relates to the technical field of prefabricated building engineering, and particularly to a precast member cavity column structure and its construction method. Background Art

[0002] In the field of prefabricated buildings, with the continuous improvement of the requirements for structural performance, construction efficiency, and sustainability in modern architecture, new building materials and technologies have developed rapidly. Among them, UHPC (Ultra-High Performance Concrete) has been widely used in building structures due to its excellent mechanical properties and durability.

[0003] Currently, to solve the problem of difficult reinforcement arrangement in UHPC cavity columns, two methods are commonly used in the industry: one is to complete the reinforcement layout by manually threading the bars on-site; the other is to prefabricate the reinforcement cage in the factory in advance and embed it into the hollow formwork column for pouring. For the former, although it has high flexibility, due to the complex cavity shape, the operation is difficult and the accuracy is not easy to control. The latter achieves precise layout through a preformed reinforcement cage. However, in practical applications, due to the large volume and heavy weight of the reinforcement cage, it is extremely easy to deviate or tilt during the hoisting process, and it may also be slightly deformed due to uneven stress. The above traditional methods have obvious deficiencies, that is, they cannot effectively cope with the small deformation problems that may occur after the reinforcement cage is hoisted, which directly affects the tight fit between the reinforcement cage and the internal cavity of the hollow formwork column, and ultimately results in unstable installation and damage to the overall structural integrity. Summary of the Invention

[0004] In order to compensate for the small deformation of the reinforcement cage and improve the installation stability and quality of the reinforcement cage in the cavity of the formwork column, this application provides a precast member cavity column structure and its construction method.

[0005] On the one hand, this application provides a precast member cavity column structure, adopting the following technical solution: A precast member cavity column structure, comprising: A reinforcement cage frame; A hollow formwork column, sleeved outside the reinforcement cage frame, A deformation compensation mechanism, including a horizontal compensation unit and a vertical compensation unit. The horizontal compensation unit includes multiple positioning bar groups and a first locking member. Each positioning bar group includes two relatively arranged positioning bars, and multiple groups of positioning bar groups are arranged at intervals in the vertical direction. Each positioning bar is slidably connected to the inner side wall of the hollow formwork column, and the first locking member is used to lock the position of the positioning bar after movement; the vertical compensation unit is located at the bottom of the hollow formwork column and includes a vertical positioning block and a second locking member. The vertical positioning blocks are slidably arranged at the top corners of the hollow formwork column, and the second locking member is used to lock the position of the vertical positioning block after sliding.

[0006] By adopting the above technical solution, the positioning bar group in the horizontal compensation unit can slide along the inner side wall of the hollow formwork column and lock the position through the first locking member, so as to effectively compensate for the lateral offset of the steel reinforcement cage and ensure the precise fixation of the steel reinforcement cage in the horizontal direction. The vertical positioning block in the vertical compensation unit can slide at the bottom of the hollow formwork column and lock the position with the aid of the second locking member, thereby completing the correction of the longitudinal offset of the steel reinforcement cage and further improving the overall installation accuracy and stability of the steel reinforcement cage. In summary, this solution not only improves the adaptability between the steel reinforcement cage and the hollow formwork column, but also significantly improves the assembly quality and bearing capacity of the entire structure.

[0007] Optionally, a group of reserved jacks is provided on each side wall of the hollow formwork column, and the group of reserved jacks includes a plurality of reserved jacks arranged at intervals in the vertical direction.

[0008] By adopting the above technical solution, multiple groups of reserved jack groups can be formed on each side wall of the hollow formwork column, and these reserved jacks are distributed at intervals in the vertical direction. On the one hand, it is convenient for construction workers to observe the longitudinal position of the steel reinforcement cage in the hollow formwork column and facilitate the adjustment of the position of the vertical positioning block. On the other hand, it is convenient to insert the required pipelines or connectors during the construction process, and can effectively enhance the connection stability between the hollow formwork column and other structural components, while improving the installation flexibility and adaptability of the entire precast component.

[0009] Optionally, the two positioning bars in the positioning bar group are arranged in a staggered manner in the vertical direction, and the positioning bar includes a transverse support bar and side support bars fixed at both ends of the transverse support bar.

[0010] By adopting the above technical solution, the two positioning bars in the positioning bar group being arranged in a staggered manner in the vertical direction can effectively increase the contact area between the positioning bar and the inner side wall of the hollow formwork column, thereby improving the accuracy and stability of horizontal compensation. At the same time, the design of the positioning bar consisting of a transverse support bar and side support bars further enhances the structural strength, ensuring that it is not prone to deformation during the sliding adjustment process and improving the working reliability of the overall deformation compensation mechanism.

[0011] Optionally, a plurality of embedded grooves are provided on the inner side wall of the hollow formwork column, the embedded grooves correspond to the positioning bars one by one, and the positioning bars are located in the embedded grooves; Guide rods are fixed on both sides of the positioning bar, guide holes are provided on the embedded grooves, one end of the guide rod slides in the guide hole, and the first locking member includes a first locking nut threadedly connected to the guide rod.

[0012] By adopting the above technical solution, the design of the embedded groove effectively limits the movement range of the positioning bar, improving the controllability of the compensation operation; the cooperation between the guide rod and the guide hole further enhances the stability of the positioning bar during the sliding process, avoiding deviation or jamming; the first locking nut realizes the precise fixation of the final position of the positioning bar through the locking effect on the guide rod, ensuring the structural stability and reliability after deformation compensation.

[0013] Optionally, a plurality of inner wall chutes are provided on the inner side wall of the hollow formwork column, and the inner wall chutes correspond to the vertical positioning blocks one by one, and the vertical positioning blocks slide in the inner wall chutes; An adjusting rod is fixed on the vertical positioning block, an adjusting hole is provided on the inner wall chute, one end of the adjusting rod slides in the adjusting hole, and the second locking member includes a second locking nut threadedly connected to the adjusting rod.

[0014] By adopting the above technical solution, the vertical positioning block can slide in the inner wall chute, thereby compensating for the slight deformation of the steel cage in the vertical direction and ensuring the precise matching between the steel cage and the hollow formwork column. The sliding of the adjusting rod in the adjusting hole further improves the flexibility and accuracy of position adjustment. At the same time, the second locking nut can reliably lock the position of the adjusted vertical positioning block, effectively preventing it from loosening or displacing during subsequent construction, and enhancing the stability of the overall structure.

[0015] Optionally, a shock-absorbing sheet is fixed on the side wall of the vertical positioning block close to the horizontal compensation unit.

[0016] By adopting the above technical solution, a shock-absorbing sheet is fixed on the side wall of the vertical positioning block close to the horizontal compensation unit, which can effectively reduce the rigid impact caused by vibration during the installation or use of the hollow formwork column. The presence of the shock-absorbing sheet can absorb part of the vibration energy, avoid hard contact between the vertical positioning block and the horizontal compensation unit, thereby protecting the structural integrity of both and extending the service life. During the construction or transportation stage, the shock-absorbing sheet helps to relieve the impact of external impact forces on the entire precast component, ensuring the functional stability of the deformation compensation mechanism.

[0017] Optionally, an end limiting unit is provided at the top of the hollow formwork column, the end limiting unit includes a plurality of top limiting blocks, the top limiting blocks correspond to the vertical positioning blocks one by one, and the top limiting blocks are used to abut against the steel cage.

[0018] By adopting the above technical solution, an end limit unit can be added to the top of the hollow formwork column. The unit includes multiple top limit blocks corresponding to the vertical positioning blocks to further tighten the steel cage. The end limit unit not only improves the position stability of the steel cage in the hollow formwork column, but also effectively prevents the steel cage from moving up and down or offsetting during the construction process, thereby improving the assembly accuracy and reliability of the overall structure. The function of the top limit block is to form a downward pressing force on the steel cage to ensure that it is accurately fixed in the preset position to avoid the risk of loosening due to external vibration or other factors.

[0019] Optionally, when the positioning bar slides in the guide hole, the positioning bar always covers the guide hole; when the adjusting rod slides in the adjusting hole, the vertical positioning block always covers the adjusting hole.

[0020] By adopting the above technical solution, the positioning bar always keeps covering the guide hole when sliding in the guide hole, effectively preventing foreign matter from entering the guide hole, and improving the working reliability of the horizontal compensation unit; at the same time, the vertical positioning block always covers the adjustment hole when the adjustment rod slides in the adjustment hole, further enhancing the stability of the vertical compensation unit, avoiding interference from external factors, and ensuring that the entire deformation compensation mechanism can accurately compensate for the slight deformation of the steel cage, thereby improving the installation stability and quality of the steel cage in the cavity of the mold column.

[0021] Optionally, a leak-proof sealing ring is fixed on the inner wall of the reserved socket.

[0022] By adopting the above technical solution, a leak-proof sealing ring can be fixed on the inner wall of the reserved plug hole, effectively preventing liquid or other media from leaking from the reserved plug hole, thereby improving the sealing performance and reliability of the structure.

[0023] On the other hand, the present application provides a construction method of a prefabricated component cavity column structure, which adopts the following technical solution: fixing the above-mentioned prefabricated component cavity column structure comprises the following steps: S1: Building a floor formwork support system, reserving a position for the hollow formwork column on the completed floor concrete surface, and then hoisting the hollow formwork column to the reserved position; S2: After hoisting, check whether the position and verticality of the hollow formwork column meet the standard, and adjust them to the standard state; S3: Use steel pipe top supports to fix the hollow formwork columns and the floor formwork support system. Arrange the steel pipe top supports around the hollow formwork columns at predetermined intervals and firmly combine them with the floor formwork support system. The steel pipe top supports must remain in full contact with the surface of the hollow formwork columns during the fixing process. The number of steel pipe top supports is determined according to the height of the hollow formwork columns. At least one steel pipe top support is added for every additional meter of height.

[0024] By adopting the above technical solution, the floor slab formwork support system is used to replace the traditional inclined support to fix the UHPC formwork column, avoiding the need for embedded support points and simplifying the construction process. At the same time, the UHPC formwork column is connected to the floor slab formwork support system through a steel pipe jack, realizing effective support and positioning of the formwork column, improving the construction efficiency and reducing the waiting time for processes. By arranging at least one steel pipe jack on each side of the UHPC formwork column for support and fixation, the acting force can be evenly distributed, significantly enhancing the overall stability of the formwork column. Meanwhile, the cumbersome operations brought by the traditional embedded support points and inclined supports are avoided, greatly shortening the construction period and improving the construction efficiency.

[0025] In summary, the present application includes at least one of the following beneficial effects: 1. In the present application, by combining the UHPC formwork column with the floor slab formwork support system, the construction steps of pre-embedding support points and using inclined supports in traditional construction are eliminated, simplifying the construction process, significantly reducing the waiting time for processes, and improving the construction efficiency; 2. In the present application, the side of the UHPC formwork column is directly connected to the vertical rod of the floor slab formwork support system through a steel pipe jack, providing a stable support and fixation effect, ensuring the position accuracy and verticality of the formwork column during the installation process; 3. In the present application, the effective correction of the deformation of the steel reinforcement cage is realized through the deformation compensation mechanism, solving the installation quality problems caused by the deformation of the steel reinforcement cage in the traditional method, and ensuring the integrity of the overall structure and the construction accuracy. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 is the overall structural schematic diagram of the precast member cavity column structure in Embodiment 1 of the present application; Figure 2 is the exploded structural schematic diagram of the precast member cavity column structure in Embodiment 1 of the present application; Figure 3 is the top view structural schematic diagram of the precast member cavity column structure in Embodiment 1 of the present application; Figure 4 is the fixed structural schematic diagram of the precast member cavity column structure in Embodiment 2 of the present application; Description of the reference numerals: 1, steel reinforcement cage; 2, hollow formwork column; 21, reserved insertion hole; 22, embedded groove; 221, guide hole; 23, inner wall chute; 231, adjustment hole; 3, horizontal compensation unit; 31, positioning strip; 311, transverse support strip; 312, side support strip; 32, first locking nut; 33, guide rod; 4, vertical compensation unit; 41, vertical positioning block; 42, second locking nut; 43, adjustment rod; 5, shock-absorbing sheet; 6, top limit block; 7, anti-leakage sealing ring; 8, formwork support system; 9, steel pipe jack. Detailed implementation manners

[0027] The following further elaborates on this application in conjunction with the attached Figures 1-4 drawings.

[0028] Embodiment 1: Referring to Figure 1 , the precast member cavity column structure provided by the embodiment of this application includes a steel reinforcement cage 1, a hollow formwork column 2, and a deformation compensation mechanism. Reserved socket groups are provided on the four side walls of the hollow formwork column 2. Each reserved socket group includes a plurality of reserved sockets 21 arranged at equal intervals in the vertical direction. In this embodiment, three reserved socket groups are provided on each side wall of the hollow formwork column 2; on two opposite side walls of the hollow formwork column 2, the reserved sockets 21 on one side wall are in one-to-one correspondence with the reserved sockets 21 on the other side wall. The steel reinforcement cage 1 is located inside the hollow formwork column 2, and the vertical positions of the bottom side ends of the steel reinforcement cage 1 can be observed through the reserved sockets 21. In addition, construction workers can also insert the required pipelines or connectors through the reserved sockets 21, which can effectively enhance the connection stability between the hollow formwork column 2 and other structural components. In this embodiment, reinforcing bars (not shown in the figure) can be inserted into the reserved sockets 21, and one reinforcing bar passes through two reserved sockets 21 at the same time. A leak-proof sealing ring 7 is also fixed on the inner side wall of the reserved socket 21. When the reserved socket 21 is inserted by a reinforcing bar, the leak-proof sealing ring 7 can improve the sealing strength at the reserved socket 21 and reduce leakage during subsequent pouring.

[0029] Referring to Figure 1 and Figure 2 , the deformation compensation mechanism includes a horizontal compensation unit 3 and a vertical compensation unit 4. The horizontal compensation unit 3 includes multiple groups of positioning bars 31 and a first locking member. Each group of positioning bars 31 contains two oppositely arranged positioning bars 31 that can slide along a specified track. Each of the two positioning bars 31 is equipped with a matching first locking member, and the positioning bars 31 can be quickly locked after displacement. Multiple groups of positioning bars 31 are evenly distributed along the height direction of the hollow formwork column 2, and the two positioning bars 31 in the same group are misaligned in the vertical direction.

[0030] Referring to Figure 2, the positioning strip 31 includes a transverse strip 311 and side strips 312 integrally formed at both ends of the transverse strip 311, and the side strips 312 are perpendicular to the transverse strip 311. A guide rod 33 is fixed to the side of each side strip 312 away from the transverse strip 311. A plurality of embedded grooves 22 are formed on the inner side wall of the hollow formwork column 2. The embedded grooves 22 correspond to the positioning strips 31 one by one, and the positioning strips 31 are located in the embedded grooves 22. Two guide holes 221 are formed on the inner side wall of the embedded groove 22. The guide holes 221 are arranged corresponding to the guide rods 33. One end of the guide rod 33 passes through the guide hole 221 and is slidably connected to the guide hole 221. The first locking member is provided with a first locking nut 32, and one end of each guide rod 33 is threadedly connected with a first locking nut 32. After sliding each group of positioning strips 31 to make the positioning strips 31 abut against the steel cage 1 to compensate for the steel cage 1, the two first locking nuts 32 on the positioning strips 31 can be tightened to lock the position of the positioning strips 31.

[0031] The length and width of the side strip 312 are both larger than those of the guide hole 221. When the guide rod 33 slides in the guide hole 221, the side strip 312 can always cover the area of the guide hole 221 to reduce the leakage of materials during the subsequent pouring process.

[0032] Refer to Figure 2 , the vertical compensation unit 4 mainly includes a vertical positioning block 41 and a second locking member. In this embodiment, a vertical positioning block 41 is provided at each of the four top corner positions at the bottom of the hollow formwork column 2. The vertical positioning block 41 can be designed as a cube or an L-shaped block to fit the edge areas of the top four corners. A shock-absorbing sheet 5 is fixed to the side of the vertical positioning block 41 close to the positioning strip 31. The shock-absorbing sheet 5 can be made of materials such as rubber or foam and is used to absorb excess energy.

[0033] In this embodiment, the vertical positioning block 41 is specifically set in a cube shape, and an adjusting rod 43 is fixed to each of the two adjacent sides of the vertical positioning block 41. A plurality of inner wall chutes 23 are formed on the inner side wall of the hollow formwork column 2. The inner wall chutes 23 correspond to the vertical positioning blocks 41 one by one, and the vertical positioning blocks 41 slide in the inner wall chutes 23. Two adjusting holes 231 are formed on each inner wall chute 23. One end of the adjusting rod 43 passes through the adjusting hole 231 and is slidably connected to the adjusting hole 231. The second locking member is specifically set as a second locking nut 42, and one end of each adjusting rod 43 is threadedly connected with a second locking nut 42. After observing the vertical positions of the four bottom corners of the steel cage 1 in the hollow formwork column 2 through the reserved insertion holes 21, slide each vertical positioning block 41 to make the vertical positioning strip 31 abut against the bottom of the steel cage 1 to compensate for the steel cage 1. Subsequently, tighten the two second locking nuts 42 on each vertical positioning block 41 to lock the position of the vertical positioning block 41.

[0034] In other embodiments, spacers of different sizes can also be used to adjust the positions of the positioning bar 31 and the vertical positioning block 41 to flexibly compensate for deformations of different sizes.

[0035] Referring to Figure 2 and Figure 3 , an end limiting unit is further provided at the top of the hollow formwork column 2. The end limiting unit includes a plurality of top limiting blocks 6. In this embodiment, four top limiting blocks 6 are provided, and the top limiting blocks 6 are arranged in one-to-one correspondence with the vertical positioning blocks 41. After the horizontal compensation unit 3 and the vertical compensation unit 4 are adjusted, the four top corner regions of the steel reinforcement cage 1 are pressed against by the top limiting blocks 6, and the top limiting blocks 6 are fixed to the hollow formwork column 2. The connection method between the top limiting block 6 and the hollow formwork column 2 can be welding or detachable connection using bolts. In this embodiment, the top limiting block 6 is specifically arranged as a U-shaped block.

[0036] The implementation principle of the precast member cavity column structure and its construction method in Embodiment 1 of the present application is as follows: Through the fine adjustment of the deformation compensation mechanism, the problems of offset and minor deformation of the steel reinforcement cage 1 in the hollow formwork column 2 during the hoisting process can be effectively solved, significantly improving the installation quality and stability. In addition, by setting the deformation compensation mechanism and the end limiting unit, a steel reinforcement cage 1 with a relatively small size can also be hoisted and assembled in the hollow formwork column 2 to reduce the assembly difficulty, and at the same time, the installation stability of the steel reinforcement cage 1 in the cavity of the formwork column can be ensured.

[0037] Embodiment 2: For the traditional fixing methods of UHPC cavity columns and traditional PC precast columns, support points are pre-embedded in the floor slab in advance, and two pairs of long and short inclined supports are used to temporarily fix the precast column on the sides of two adjacent columns respectively before pouring concrete. After the concrete strength meets the design requirements, the temporary inclined supports are removed. This causes a relatively long waiting time for the process and has a greater impact on the construction period. Referring to Figure 4 , in view of this situation, the present application provides a construction method for a precast member cavity column structure, including the following steps: S1: Build the floor slab formwork support system 8, reserve the position of the hollow formwork column 2 on the completed concrete surface of the floor slab, and then hoist the hollow formwork column 2 to the reserved position. Among them, the building area of the formwork support system 8 is located on the concrete surface of the already poured floor slab, and a scaffold is used to build the formwork support system 8.

[0038] S2: After hoisting, check whether the position and verticality of the hollow formwork column 2 meet the standards and adjust them to the standard state.

[0039] S3: Use the steel pipe jack 9 to fixedly connect the hollow formwork column 2 with the floor formwork support system 8. Arrange the steel pipe jacks 9 at a predetermined spacing around the hollow formwork column 2 and firmly combine them with the floor formwork support system 8. During the fixation process, the steel pipe jack 9 needs to be completely fitted with the surface of the hollow formwork column 2, and the number of steel pipe jacks 9 is determined according to the height of the hollow formwork column 2. For every additional one-meter height, at least one more steel pipe jack 9 is added.

[0040] In this embodiment, one steel pipe jack 9 is arranged every one meter around the hollow formwork column 2, and multiple steel pipe jacks 9 are installed and fixed from bottom to top.

[0041] When installing the steel pipe jack 9, one end of the steel pipe jack 9 needs to abut against the side surface of the hollow formwork column 2, which can effectively transfer the horizontal force and ensure the stability and positioning accuracy of the hollow formwork column 2 during the construction process; the other end of the steel pipe jack 9 is fixed to the vertical pole inside the floor formwork support system 8 through a U-shaped buckle, realizing the reliable connection between the steel pipe jack 9 and the existing floor formwork support system 8, avoiding the complex operations brought by the inclined support in the traditional fixation construction, thus simplifying the construction process and improving the work efficiency.

[0042] The implementation principle of this embodiment is: By arranging reasonable construction steps, ensure the installation accuracy and stability of the hollow formwork column 2, thereby improving the overall project quality.

[0043] The above are all the preferred embodiments of this application. It does not limit the protection scope of this application accordingly. Therefore, all equivalent changes made according to the structure, shape, and principle of this application should be covered within the protection scope of this application.

Claims

1. A prefabricated component cavity column structure, characterized in that: include: Steel cage (1); The hollow formwork column (2) is sleeved outside the steel cage (1). A deformation compensation mechanism comprises a horizontal compensation unit (3) and a vertical compensation unit (4), wherein the horizontal compensation unit (3) comprises a plurality of positioning bar (31) groups and a first locking member, wherein the positioning bar (31) group comprises two positioning bars (31) arranged opposite to each other, wherein the plurality of positioning bar (31) groups are arranged at intervals in the vertical direction, wherein each positioning bar (31) is slidably connected to the inner side wall of the hollow formwork column (2), and wherein the first locking member is used to lock the position of the positioning bar (31) after it moves; wherein the vertical compensation unit (4) is located at the bottom of the hollow formwork column (2), and comprises a vertical positioning block (41) and a second locking member, wherein the vertical positioning block (41) is slidably arranged at the top corner of the hollow formwork column (2), and wherein the second locking member is used to lock the position of the vertical positioning block (41) after it slides.

2. The prefabricated component cavity column structure according to claim 1, characterized in that: A group of reserved insertion holes (21) is provided on each side wall of the hollow shell column (2), and the group of reserved insertion holes (21) comprises a plurality of reserved insertion holes (21) spaced apart in a vertical direction.

3. The prefabricated component cavity column structure according to claim 2, characterized in that: The two positioning bars (31) in the positioning bar (31) group are staggered in the vertical direction, and the positioning bars (31) comprise transverse support bars (311) and side support bars (312) fixed at both ends of the transverse support bars (311).

4. The prefabricated component cavity column structure according to claim 3, characterized in that: A plurality of embedded grooves (22) are provided on the inner side wall of the hollow shell column (2), the embedded grooves (22) correspond to the positioning strips (31) one by one, and the positioning strips (31) are located in the embedded grooves (22); Guide rods (33) are fixed on both sides of the positioning strip (31), a guide hole (221) is provided on the embedded groove (22), one end of the guide rod (33) slides in the guide hole (221), and the first locking member includes a first locking nut (32) threadedly connected to the guide rod (33).

5. The prefabricated component cavity column structure according to claim 4, characterized in that: A plurality of inner wall sliding grooves (23) are provided on the inner side wall of the hollow shell column (2), the inner wall sliding grooves (23) correspond to the vertical positioning blocks (41) one by one, and the vertical positioning blocks (41) slide in the inner wall sliding grooves (23); An adjusting rod (43) is fixed on the vertical positioning block (41), an adjusting hole (231) is opened on the inner wall slide groove (23), one end of the adjusting rod (43) slides in the adjusting hole (231), and the second locking member includes a second locking nut (42) threadedly connected to the adjusting rod (43).

6. The prefabricated component cavity column structure according to claim 2, characterized in that: A shock-absorbing sheet (5) is fixed on the side wall of the vertical positioning block (41) close to the horizontal compensation unit (3).

7. The prefabricated component cavity column structure according to claim 2, characterized in that: An end limit unit is provided at the top of the hollow shell column (2), the end limit unit comprising a plurality of top limit blocks (6), the top limit blocks (6) corresponding one to one with the vertical positioning blocks (41), and the top limit blocks (6) are used to press against the steel cage (1).

8. The prefabricated component cavity column structure according to claim 5, characterized in that: When the positioning bar (31) slides in the guide hole (221), the positioning bar (31) always covers the guide hole (221); when the adjustment rod (43) slides in the adjustment hole (231), the vertical positioning block (41) always covers the adjustment hole (231).

9. The prefabricated component cavity column structure according to claim 2, characterized in that: A leak-proof sealing ring (7) is fixed on the inner wall of the reserved insertion hole (21).

10. A construction method for a prefabricated component cavity column structure, characterized in that: Fixing the prefabricated component cavity column structure as claimed in any one of claims 1 to 9 comprises the following steps: S1: constructing a floor formwork support system (8), reserving a position for the hollow formwork column (2) on the completed floor concrete surface, and then hoisting the hollow formwork column (2) to the reserved position; S2: After hoisting, check whether the position and verticality of the hollow shell column (2) meet the standard, and adjust them to the standard state; S3: Using steel pipe top supports (9) to fix the hollow formwork column (2) to the floor formwork support system (8), the steel pipe top supports (9) are arranged around the hollow formwork column (2) at a predetermined interval and are firmly combined with the floor formwork support system (8). During the fixing process, the steel pipe top supports (9) need to be kept in full contact with the surface of the hollow formwork column (2), and the number of the steel pipe top supports (9) is determined according to the height of the hollow formwork column (2), and at least one steel pipe top support (9) is added for every additional meter of height.

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