Steel pipe column constrained assembled prefabricated shear wall structure

Abstract

The application provides a steel pipe column constrained assembled prefabricated shear wall structure, and relates to the technical field of assembled buildings, which comprises prefabricated concrete and lower layer prefabricated shear walls, the upper sides of the prefabricated concrete and the lower layer prefabricated shear walls are respectively provided with a first horizontal distribution steel bar and a second horizontal distribution steel bar, the side of the prefabricated concrete close to the lower layer prefabricated shear wall is provided with a horizontal cast-in-situ belt, and the bottom of the horizontal cast-in-situ belt is provided with a cast-in-situ floor slab, the connection between the upper and lower layer prefabricated shear walls is steel bar lap joint, the steel bar lap joint is visual operation, the lap joint quality can be accepted before the concrete pouring, the safety and reliability of the connection joint are ensured, the upper and lower through circular cylindrical holes are reserved at the two ends of the prefabricated shear wall, the steel pipe column is connected through the stud bolts and passes through the holes to support the wall body, and the wall body and the steel column are constrained through the limiting bolts.

Description

Technical Field

[0001] This invention relates to the field of prefabricated building technology, and in particular to a prefabricated shear wall structure with steel pipe column confinement. Background Technology

[0002] In recent years, prefabricated buildings have developed rapidly in China, with prefabricated concrete structures, primarily composed of precast concrete components, being the most widely used. In prefabricated concrete structures, precast shear walls are one of the main vertical components. Inter-story precast shear walls typically use sleeve grouting to connect the vertical reinforcement bars; that is, grouting is performed at the connection nodes after the components are installed. However, in engineering applications, the sleeve connection structure for precast shear wall reinforcement still has the following problems:

[0003] (1) The grouting joint of the reinforcing bar sleeve is established by injecting special high-strength cement-based grout into the gap between the sleeve and the reinforcing bar. After the grout solidifies, the reinforcing bar is anchored in the sleeve, thus establishing the connection between the reinforcing bars. Therefore, the fullness of the grout in the sleeve directly affects the reliability of the connection. When the grout in the sleeve has problems such as voids, delamination, and shrinkage, the connection between the reinforcing bar and the sleeve will be severely weakened.

[0004] (2) Grouting is a type of construction work in concealed areas, usually carried out in enclosed spaces, which makes on-site construction operations difficult and the construction process complex. At the same time, it is difficult to inspect the grouting after the construction is completed. Conventional methods such as the pre-embedded steel wire pull-out method, impact echo method, and ultrasonic method are not very effective in inspecting grouting nodes. The pre-embedded sensor method, X-ray method, and borehole inspection method are not very applicable. Due to the limitations of inspection methods, the current engineering construction focuses on process control and strengthens quality monitoring through measures such as full-process video recording. However, there is a lack of effective quality inspection measures in the later stage, which limits the investigation of grouting construction quality and safety hazards.

[0005] (3) After the grouting of the steel sleeve, the grout needs to be cured for 24 hours. Only after the strength reaches 35MPa can subsequent construction that disturbs the joint be carried out. In the construction site of prefabricated buildings, it is impossible to carry out on-site construction that disturbs the joint, such as formwork reinforcement and scaffolding installation, during the grouting curing process. Grouting is usually carried out between the on-site steel reinforcement binding and formwork installation nodes, which can easily affect the on-site construction organization and prolong the construction period. Therefore, this invention proposes a steel pipe column-constrained prefabricated shear wall structure.

[0006] Therefore, this application provides a prefabricated shear wall structure with steel pipe column confinement to meet the requirements. Summary of the Invention

[0007] The purpose of this invention is to overcome the shortcomings of existing technologies and propose a steel pipe column-constrained prefabricated shear wall structure, which solves the technical problems of complex connection structure, difficult on-site construction, and difficulty in quality inspection of prefabricated shear walls in prefabricated buildings.

[0008] To achieve the above objectives, the present invention adopts the following technical solution: a precast shear wall structure with steel pipe column constraint, comprising precast concrete and a lower precast shear wall. A first-level horizontal distribution steel bar and a second-level horizontal distribution steel bar are respectively provided on the precast concrete and the lower precast shear wall. A horizontal cast-in-place strip is provided on the side of the precast concrete near the lower precast shear wall. A cast-in-place floor slab is provided at the bottom of the horizontal cast-in-place strip. A first-level supporting steel pipe column is inserted through the cast-in-place floor slab and the precast concrete. The first-level supporting steel pipe column is inserted through a first-level reserved cylindrical channel opened in the lower precast shear wall. The first-level horizontal distribution steel bar is inside the precast shear wall. A first-level limiting bolt is provided on the surface of both the precast concrete and the lower precast shear wall. The vertical distribution steel bars of the precast shear wall extend out of the wall body. The double-headed studs are connected to the lower steel pipe column.

[0009] In a preferred embodiment, the first reserved cylindrical channel is provided through both ends of the precast concrete, and the vertical and horizontal distribution bars avoid the cylindrical channel.

[0010] In a preferred embodiment, the internal threads of the first and second supporting steel pipe columns are both right-hand threads, and the threads on the second double-ended stud are also both right-hand threads. The second double-ended stud and the support plate are an integral structure, and the support plate is located in the middle of the second double-ended stud. The first and second supporting steel pipe columns are respectively connected to both ends of the double-ended stud.

[0011] In a preferred embodiment, the gear patterns provided in the middle of the No. 1 and No. 2 support steel pipe columns are in two sets. The gear patterns are located at 3 / 10 and 6 / 10 of the height of the No. 1 and No. 2 support steel pipe columns, respectively. The gear patterns are distributed circumferentially along the No. 1 and No. 2 support steel pipe columns. The width of the apex of two adjacent gear patterns is the same as the pitch of the right limit bolt and the left limit bolt.

[0012] In a preferred embodiment, the bottom end of the No. 1 supporting steel pipe column is threadedly connected to a No. 2 double-ended stud. An adjusting shim and a supporting plate are sequentially arranged from top to bottom on the No. 1 supporting steel pipe column above the No. 2 double-ended stud. An lap joint is provided inside the cast-in-place floor slab, penetrating the precast concrete, the lap joint, and the lower precast shear wall. The portion of the No. 2 supporting steel pipe column located inside the lower precast shear wall has a left-side limiting bolt and a right-side limiting bolt respectively. There are two left-side limiting bolts, located on both sides of the No. 1 supporting steel pipe column. One end of the right-side limiting bolt contacts the No. 1 supporting steel pipe column. Gear patterns are provided on the surface of the No. 1 supporting steel pipe column between the left-side limiting bolt and the lower precast shear wall with the No. 2 horizontally distributed reinforcing steel. A threaded sleeve is provided on the connecting steel plate, and the limiting bolt is connected to the sleeve. The distribution height of the embedded sleeve is the same as the height of the gear patterns on the No. 1 supporting steel pipe column. The center-to-center distance between the two embedded sleeves on the left side is one... The sum of the diameters of the supporting steel pipe column and the left limiting bolt, the embedded sleeve on the right side is aligned with the axis of the supporting steel pipe column, the left limiting bolt is inserted through the embedded sleeve, an embedded iron box is fixed to one side of the connecting steel plate, the embedded iron box is located outside the supporting steel pipe column, the left and right limiting bolts are both connected inside the embedded sleeve and contact the gear threads on the supporting steel pipe column, the left and right limiting bolts are both located inside the embedded iron box, the... The No. 1 supporting steel pipe column is a hollow structure. The No. 1 supporting steel pipe column has internal threads at both ends. The No. 2 supporting steel pipe column is installed through the middle of the lower precast shear wall from top to bottom. The No. 1 and No. 2 supporting steel pipe columns have the same structure. The No. 2 supporting steel pipe column is installed through the No. 2 reserved cylindrical channel. The No. 2 reserved cylindrical channel is installed through the lower precast shear wall from top to bottom. The No. 2 reserved cylindrical channel has the same structure as the right-side limiting bolt.

[0013] The beneficial effects of adopting the above-mentioned further scheme are: the limiting bolts corresponding to the two pre-embedded sleeves on the left restrict the left and right movement of the supporting steel pipe column, and form a triangular fixation with the limiting bolt corresponding to the one pre-embedded sleeve on the right, restricting the forward and backward movement of the supporting steel pipe. At the same time, pre-embedded iron boxes are set in the precast concrete according to the connection position of the limiting bolts, so that there is reserved space inside.

[0014] In a preferred embodiment, double-ended studs are provided between the precast concrete and the No. 1 and No. 2 supporting steel pipe columns at the top of the lower precast shear wall.

[0015] Compared with the prior art, the advantages and positive effects of the present invention are as follows:

[0016] 1. The connection between the upper and lower precast shear walls of this invention is a steel bar lap splice. The steel bar lap splice is a visible operation, and the lap splice quality can be inspected before concrete pouring to ensure the safety and reliability of the connection node.

[0017] 2. The precast shear wall structure described in this invention has cast-in-place joints between upper and lower layers. The precast components are connected as a whole through cast-in-place concrete sections, effectively solving the waterproofing problem of precast component joints in assembled buildings.

[0018] 3. The precast shear wall structure described in this invention is easy to construct and install. Traditional steel sleeve connection requires the alignment and connection of multiple sleeves, and the sleeve connection point is a blind spot, making it difficult to adjust the components during installation and resulting in low on-site construction efficiency. The precast shear wall structure described in this invention only requires adjusting the connection between the supporting steel pipe column and the reserved hole of the precast wall. The adjustment process is visible and simple to operate, which can effectively improve the on-site hoisting efficiency.

[0019] 4. The supporting steel pipe columns in the precast shear wall structure described in this invention play a certain role in the temporary support of the precast shear wall, which can reduce the number of temporary diagonal supports. Through reinforcement measures such as limit bolts, the stability during installation can be enhanced, the disturbance of subsequent construction to the precast shear wall can be reduced, and the forming quality can be improved. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the overall outer layer of a prefabricated shear wall structure with steel pipe column confinement according to the present invention.

[0021] Figure 2 This is a partial sectional view of a prefabricated shear wall structure with steel pipe column confinement according to the present invention.

[0022] Figure 3 This is a structural diagram of precast concrete in a steel pipe column-constrained precast shear wall structure according to the present invention;

[0023] Figure 4 This is a structural diagram of the precast protective layer in a steel pipe column-constrained precast shear wall structure according to the present invention.

[0024] Figure 5 This is a cross-sectional view of the supporting steel pipe column and the limiting bolt in a prefabricated shear wall structure with steel pipe column constraint according to the present invention.

[0025] Figure 6 This is a front view of the supporting steel pipe column and limiting bolts in a prefabricated shear wall structure with steel pipe column constraint according to the present invention.

[0026] Figure 7 This is a top view of the precast concrete in a steel pipe column-constrained precast shear wall structure according to the present invention.

[0027] Figure 8This is a structural diagram of an adjustable shim in a steel pipe column-constrained prefabricated shear wall structure according to the present invention.

[0028] Figure 9 This is a bottom view of a prefabricated shear wall structure with steel pipe column constraint according to the present invention.

[0029] Legend:

[0030] 1. Precast concrete; 2. No. 1 horizontal distribution reinforcement; 3. No. 1 limiting bolt; 4. No. 1 double-ended stud; 5. No. 1 supporting steel pipe column; 6. Vertical distribution reinforcement; 7. Horizontal cast-in-place strip; 8. Cast-in-place floor slab; 9. Lower layer precast shear wall; 10. No. 2 horizontal distribution reinforcement; 11. Lap joint; 12. Internal thread of supporting steel pipe column; 13. No. 1 reserved cylindrical channel; 14. Support plate; 15. No. 2 double-ended stud; 16. No. 2 reserved cylindrical channel; 17. Adjusting shim; 18. Left limiting bolt; 19. Connecting steel plate; 20. Embedded iron box; 21. Embedded sleeve; 22. Gear pattern; 23. Right limiting bolt; 24. No. 2 supporting steel pipe column; 25. Upper precast protective layer; 26. Lower precast protective layer. Detailed Implementation

[0031] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0032] Example

[0033] like Figure 1-9 As shown, a precast shear wall structure with steel pipe column confinement includes a precast concrete 1 and a lower precast shear wall 9. The precast concrete 1 (which, like the lower precast shear wall 9, is a shear wall structure) and the lower precast shear wall 9 are respectively provided with a first-order horizontal distribution steel bar 2 and a second-order horizontal distribution steel bar 10. The first-order horizontal steel bar is located within the precast shear wall, while the second-order horizontal distribution steel bar is located within a horizontal cast-in-place strip. One is precast, and the other is cast in place. A horizontal cast-in-place strip 7 is provided on the side of the precast concrete 1 closest to the lower precast shear wall 9. A cast-in-place floor slab 8 is provided at the bottom of the horizontal cast-in-place strip 7. A first-order supporting steel pipe column 5 is inserted through the cast-in-place floor slab 8 and the precast concrete 1.

[0034] On the No. 1 reserved cylindrical duct 13 opened on the first layer of precast shear wall 9, the No. 1 horizontal distribution steel bar 2 is set on both sides of the cast-in-place floor slab 8. The No. 1 limiting bolt 3 is set on the surface of the precast concrete 1 and the lower layer precast shear wall 9. The vertical distribution steel bar 6 of the precast shear wall extends out of the wall. The No. 1 double-headed stud 4 is set between the vertical distribution steel bars 6 at the bottom of the precast concrete 1. The double-headed stud 4 is connected to the steel pipe column of the lower layer.

[0035] Among them, the bottom end of the No. 1 supporting steel pipe column 5 is threadedly connected to the No. 2 double-headed stud 15. Above the No. 2 double-headed stud 15, the No. 1 supporting steel pipe column 5 is provided with adjusting shims 17 and supporting plates 14 from top to bottom. The top and bottom sides of the precast concrete 1 are respectively provided with an upper precast protective layer 25 and a lower precast protective layer 26. The cast-in-place floor slab 8 is provided with an lap joint 11, which is installed through the precast concrete 1, the lap joint 11, and the lower precast shear wall 9. The outer side of the No. 1 supporting steel pipe column 5 located inside the lower precast shear wall 9 is respectively provided with a left limiting bolt 18 and a right limiting bolt 23. The left limiting bolt 18... There are two limiting bolts. The left limiting bolt 18 is located on both sides of the No. 1 supporting steel pipe column 5, and one end of the right limiting bolt 23 is in contact with the No. 1 supporting steel pipe column 5. The surface of the No. 1 supporting steel pipe column 5 between the left limiting bolt 18 and the lower layer precast shear wall 9 of the No. 2 horizontal distribution reinforcement 10 is provided with gear pattern 22. A threaded sleeve is provided on the connecting steel plate 19, and the limiting bolt is connected to the sleeve. The left limiting bolt 18 is installed through the embedded sleeve 21. An embedded iron box 20 is fixed on one side of the connecting steel plate 19. The embedded iron box 20 is set outside the No. 1 supporting steel pipe column 5. The distribution height of the embedded sleeve 21 is the same as the height of the gear pattern 22 on the No. 1 supporting steel pipe column 5. Similarly, the center-to-center distance between the two embedded sleeves 21 on the left is the sum of the diameters of the No. 1 supporting steel pipe column 5 and the left limiting bolt 18. The embedded sleeve 21 on the right is aligned with the axis of the No. 1 supporting steel pipe column 5. The limiting bolts corresponding to the two embedded sleeves 21 on the left restrict the left and right movement of the supporting steel pipe column, and form a triangular fixation with the limiting bolt corresponding to the one embedded sleeve 21 on the right, restricting the forward and backward movement of the supporting steel pipe. At the same time, embedded iron boxes 20 are set in the precast concrete 1 according to the connection position of the limiting bolts, so that there is reserved space inside. The left limiting bolt 18 and the right limiting bolt 23 are both connected in the embedded sleeves 21 and are aligned with the No. 1 supporting steel pipe column 5. Gear pattern 22 contacts, left limit bolt 18 and right limit bolt 23 are both set inside the pre-embedded iron box 20, the first support steel pipe column 5 is a hollow structure, the hollow inner wall of the first support steel pipe column 5 is provided with support steel pipe column internal thread 12, the middle of the lower precast shear wall 9 is provided with a second support steel pipe column 24 running from top to bottom, the first support steel pipe column 5 and the second support steel pipe column 24 have the same structure, the second support steel pipe column 24 is provided through the second reserved cylindrical channel 16, the second reserved cylindrical channel 16 is opened from top to bottom on the lower precast shear wall 9, the second reserved cylindrical channel 16 has the same structure as the right limit bolt 23.

[0036] The first reserved cylindrical channel 13 is installed through both ends of the precast concrete 1. The vertical distribution steel bar 6 and the first horizontal distribution steel bar 2 are fixed inside the precast concrete 1. The first reserved cylindrical channel 13 is not connected to the vertical distribution steel bar 6 and the first horizontal distribution steel bar 2. The precast concrete 1 is installed on the first supporting steel pipe column 5 through the first reserved cylindrical channel 13. The vertical distribution steel bar 6 and the horizontal distribution steel bar are determined according to the structural construction drawings to ensure that the vertical and horizontal reinforcement ratios are not less than the original reinforcement ratios. The vertical distribution steel bar 6 and the horizontal distribution steel bar are fixed inside the precast concrete 1 and tie bars are arranged according to the design requirements. The outermost distribution steel bar meets the minimum protective layer thickness requirements. The two ends of the precast concrete 1 have reserved cylindrical channels that run vertically through the wall. The cylindrical channels are parallel to the wall surface and the inner diameter is slightly larger than the diameter of the supporting steel pipe column. The cylindrical channels do not conflict with the vertical distribution steel bar 6 and the horizontal distribution steel bar. The precast concrete 1 is installed on the supporting steel pipe column through the cylindrical channels at both ends.

[0037] Among them, the internal threads 12 of the supporting steel pipe column 5 and the supporting steel pipe column 24 are all right-hand threads, and the threads on the double-ended stud 15 are all right-hand threads. The double-ended stud 15 and the supporting plate 14 are an integral structure. The supporting plate 14 is located in the middle of the double-ended stud 15. The supporting steel pipe column 5 and the supporting steel pipe column 24 are respectively connected to the two ends of the double-ended stud. The double-ended stud is equipped with an adjustable shim 17 with adjustable thickness, which can realize the adjustment of the precast wall elevation.

[0038] Among them, the gear pattern 22 set in the middle of the No. 1 support steel pipe column 5 and the No. 2 support steel pipe column 24 are two sets. The gear pattern 22 is located at 3 / 10 and 6 / 10 of the height of the No. 1 support steel pipe column 5 and the No. 2 support steel pipe column 24, respectively. The gear pattern 22 is distributed circumferentially along the No. 1 support steel pipe column 5 and the No. 2 support steel pipe column 24. The width of the apex of two adjacent gear patterns 22 is the same as the pitch of the right limit bolt 23 and the left limit bolt 18.

[0039] Among them, No. 2 support steel pipe column 24 is set between the No. 1 support steel pipe column 5 and the No. 2 support steel pipe column 24 at the top of the precast concrete 1 and the lower precast shear wall 9.

[0040] The vertical distribution reinforcement 6 is connected by lap splices, and the lap length meets the design requirements. The vertical distribution reinforcement 6 of the lower shear wall is lapped with the vertical distribution reinforcement 6 of the upper shear wall. Two to three rows of horizontal distribution reinforcement are arranged within the lap splice area, and the spacing of the horizontal distribution reinforcement is ensured to meet the design requirements. Several tie bars are arranged at intervals for reinforcement. A horizontal post-cast strip is formed within the lap splice area. It is cast in place with concrete together with the vertical post-cast strips on both sides of the precast shear wall to form an integral whole.

[0041] In the above content, the structural layer height H is defined as follows: the supporting steel pipe column height h1, the precast concrete 1 height h2, the cast-in-place concrete height h3, the cast-in-place slab thickness h4, the supporting slab thickness h5, the adjustable shim thickness h6, and the vertical distribution reinforcement 6 design lap length L. The height relationship of each component is as follows:

[0042] H = h3 + h2 + h4 = h1 + h5 + h6;

[0043] h3 = L + h5 + h6 + 20 mm;

[0044] H = L + h5 + h6 + 20mm + h2 + h4.

[0045] Based on the above solution, the present invention can be further improved as follows:

[0046] Precast shear wall components can be equipped with three or more supporting steel pipe columns. For longer precast shear wall components, reserved holes can be added in the middle. For L-shaped precast shear wall components, reserved holes can be added at the corners. Multiple steel pipe supports can improve structural safety and installation stability.

[0047] Precast shear wall components can have an outer protective layer of concrete precast on the outside of the cast-in-place section, eliminating the need for outer formwork, reducing on-site workload, and improving construction efficiency.

[0048] like Figure 4 As shown, the top and bottom sides of the precast concrete 1 are respectively provided with an upper precast protective layer 25 and a lower precast protective layer 26. The upper precast protective layer 25 and the lower precast protective layer 26 are additional precast concrete protective layers, achieving the effect of eliminating the need for formwork.

[0049] like Figure 3 As shown, the number of steel pipe columns is set according to the size of the precast wall to improve stability.

[0050] The above description is merely a preferred embodiment of the present invention and is not intended to limit the present invention in any other way. Any person skilled in the art may make changes or modifications to the above-disclosed technical content to create equivalent embodiments for application in other fields. However, any simple modifications, equivalent changes, and modifications made to the above embodiments based on the technical essence of the present invention without departing from the scope of the present invention shall still fall within the protection scope of the present invention.

Claims

1. A steel pipe column restrained assembly type prefabricated shear wall structure comprising a prefabricated concrete (1) and a lower layer prefabricated shear wall (9), characterized in that, A first horizontal distribution steel bar (2) is provided on the precast concrete (1), and a second horizontal distribution steel bar (10) is provided on the lower precast shear wall (9). A horizontal cast-in-place strip (7) is provided on the side of the precast concrete (1) near the lower precast shear wall (9). A cast-in-place floor slab (8) is provided at the bottom of the horizontal cast-in-place strip (7). A first supporting steel pipe column (5) is provided through the cast-in-place floor slab (8) and the precast concrete (1). A first reserved cylindrical duct (13) is inserted into the lower precast shear wall (9). A first horizontal distribution steel bar (2) is provided on both sides of the cast-in-place floor slab (8). A first limiting bolt (3) is provided on the surface of the precast concrete (1) and the lower precast shear wall (9). A first vertical distribution steel bar (6) is provided at the top and bottom of the precast concrete (1). A first double-headed stud (4) is provided between the vertical distribution steel bars (6) at the bottom of the precast concrete (1). The bottom end of the No. 1 supporting steel pipe column (5) is threadedly connected to the No. 2 double-ended stud (15). On the No. 1 supporting steel pipe column (5) above the No. 2 double-ended stud (15), an adjusting shim (17) and a supporting plate (14) are arranged sequentially from top to bottom. The top and bottom sides of the precast concrete (1) are respectively provided with an upper precast protective layer (25) and a lower precast protective layer (26). The interior of the cast-in-place floor slab (8) is provided with an overlapping member (11). The overlapping member (11) is installed through the precast concrete (1), the cast-in-place floor slab (8) and the lower precast shear wall (9). Above, the outer side of the No. 1 supporting steel pipe column (5) located inside the lower precast shear wall (9) is respectively provided with a left limiting bolt (18) and a right limiting bolt (23). There are two left limiting bolts (18), which are located on both sides of the No. 1 supporting steel pipe column (5). One end of the right limiting bolt (23) is in contact with the No. 1 supporting steel pipe column (5). The surface of the No. 1 supporting steel pipe column (5) between the left limiting bolt (18) and the No. 2 horizontal distribution reinforcement (10) and the lower precast shear wall (9) is provided with gear pattern (22). The left limiting bolt (18) is inserted into the connecting steel plate (19). The outer side of the connecting steel plate (19) is fixedly connected with the second horizontally distributed reinforcing bar (10). The left limiting bolt (18) is inserted through the embedded sleeve (21). An embedded iron box (20) is fixed on one side of the connecting steel plate (19). The embedded iron box (20) is set outside the first supporting steel pipe column (5). The left limiting bolt (18) and the right limiting bolt (23) are both set inside the embedded iron box (20). The first supporting steel pipe column (5) is a hollow structure. The hollow inner wall of the first supporting steel pipe column (5) is provided with a supporting steel pipe column internal thread (12). The middle part of the lower precast shear wall (9) is provided with a second supporting steel pipe column (24) running from top to bottom. The first supporting steel pipe column (5) and the second supporting steel pipe column (24) have the same structure. The second supporting steel pipe column (24) is provided through the second reserved cylindrical channel (16). The second reserved cylindrical channel (16) is opened from top to bottom on the lower precast shear wall (9). The second reserved cylindrical channel (16) matches the right limit bolt (23). The gear pattern (22) set in the middle of the No. 1 support steel pipe column (5) and the No. 2 support steel pipe column (24) are in two sets. The gear pattern (22) is located at 3 / 10 and 6 / 10 of the height of the No. 1 support steel pipe column (5) and the No. 2 support steel pipe column (24), respectively. The gear pattern (22) is distributed circumferentially along the No. 1 support steel pipe column (5) and the No. 2 support steel pipe column (24). The width of the apex of two adjacent gear patterns (22) is the same as the pitch of the right limit bolt (23) and the left limit bolt (18). 2.The steel tube column confined fabricated precast shear wall structure according to claim 1, characterized in that: The first reserved cylindrical channel (13) is installed through both ends of the precast concrete (1). The vertical distribution steel bar (6) and the first horizontal distribution steel bar (2) are fixed inside the precast concrete (1). The first reserved cylindrical channel (13) is not connected to the vertical distribution steel bar (6) and the first horizontal distribution steel bar (2). The precast concrete (1) is installed on the first supporting steel pipe column (5) through the first reserved cylindrical channel (13). 3.The steel tube column confined fabricated precast shear wall structure of claim 1, characterized in that: The internal threads (12) of the first supporting steel pipe column (5) and the second supporting steel pipe column (24) are both right-hand threads. The threads on the second double-ended stud (15) are also right-hand threads. The second double-ended stud (15) and the support plate (14) are an integral structure. The support plate (14) is located in the middle of the second double-ended stud (15). The first supporting steel pipe column (5) and the second supporting steel pipe column (24) are fixed to one end of the second double-ended stud (15).

4. The precast shear wall structure with steel pipe column confinement as described in claim 1, characterized in that... The feature is that the distribution height of the pre-embedded sleeve (21) is the same as the height of the gear pattern (22) on the No. 1 support steel pipe column (5), the center distance between the two pre-embedded sleeves (21) on the left is the sum of the diameters of the No. 1 support steel pipe column (5) and the left limiting bolt (18), and the pre-embedded sleeve (21) on the right is aligned with the axis of the No. 1 support steel pipe column (5). 5.The steel tube column confined fabricated precast shear wall structure of claim 1, wherein: The left limiting bolt (18) and the right limiting bolt (23) are both connected inside the pre-embedded sleeve (21) and contact the gear pattern (22) on the No. 1 support steel pipe column (5).

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