Permanent temporary overlapping assembly station structure and construction method

Abstract

The invention discloses a permanent-temporary overlapped assembly station structure and a construction method. The permanent-temporary overlapped assembly station structure comprises an enclosure structure, a prefabricated middle longitudinal beam, a cast-in-place bottom plate, a prefabricated side wall and a prefabricated middle plate. Prefabricated side walls are arranged on the left and right sides of the top of the cast-in-place The prefabricated side wall is formed by splicing a plurality of side wall overlapping prefabricated blocks; the side wall superposed precast block comprises a first steel bar truss and a first concrete precast block; a cast-in-place core wall is arranged between the enclosure structure and the first concrete precast block; the prefabricated middle plates are arranged at the tops of the prefabricated middle longitudinal beams and the prefabricated side walls; the prefabricated middle plate is formed by splicing a plurality of middle plate overlapping prefabricated blocks; the middle plate laminated precast block comprises a second steel bar truss and a second concrete precast block; a middle plate cast-in-place layer is arranged at the top of the second concrete precast block; and the cast-in-situ core wall and the middle plate cast-in-situ layer are integrally cast and The core pouring wall and the middle plate cast-in-place layer are poured at a time and integrally formed, one horizontal construction joint can be omitted, and the structural integrity and the waterproof quality are greatly improved.

Description

Technical Field

[0001] The present invention relates to the technical field of subway station construction, and more specifically to a permanent and temporary superimposed assembly station structure and a construction method. Background Art

[0002] Traditional subway stations are generally constructed in the form of on-site casting, that is, building formwork, tying steel bars, and pouring concrete. After the concrete solidifies, the concrete and steel bars together form reinforced concrete components to serve as the floor plates, pillars or wall panels of the subway station. There are many problems such as large site occupation, long construction processes for side walls, structural columns, longitudinal beams, and structural panels, large consumption of formwork and support during construction, large manpower investment, serious material waste, and low civilized construction and environmental protection. In order to implement the goal of green, low-carbon and high-quality development of the construction industry, the field of urban rail transit is also constantly developing and creating, and prefabricated subway station construction technology has emerged. Compared with traditional subway station construction technology, prefabricated subway stations have the advantages of fast construction speed, good component quality and less environmental pollution. However, the existing prefabricated subway stations have many joints in the assembled components, which affects the integrity and waterproof quality of the station structure.

[0003] Therefore, how to provide a permanent and temporary composite assembly station structure and construction method that can provide structural integrity and waterproof quality is one of the technical problems that urgently need to be solved in this field. Summary of the invention

[0004] In view of this, the present invention provides a permanent and temporary composite assembly station structure and a construction method, the purpose of which is to solve the problems in the prior art.

[0005] In order to solve the above technical problems, the present invention adopts the following technical solutions:

[0006] A Yonglin composite assembly station structure comprises: a retaining structure, a foundation pit, prefabricated columns, a prefabricated middle longitudinal beam, a cast-in-place bottom plate, a prefabricated side wall and a prefabricated middle plate; the cast-in-place bottom plate is arranged at the bottom of the foundation pit; the prefabricated columns are arranged at the middle position of the top of the cast-in-place bottom plate; the prefabricated middle longitudinal beam is arranged on the prefabricated columns; prefabricated side walls are arranged on both sides of the top of the cast-in-place bottom plate; the prefabricated side walls are composed of a plurality of side wall composite prefabricated blocks; the side wall composite prefabricated blocks include a first steel truss and a steel truss arranged at a distance from the first steel truss A first concrete precast block is provided on one side of the precast side wall; a cast-in-place core wall is provided between the enclosure structure and the first concrete precast block; the precast middle plate is provided on the top of the precast middle longitudinal beam and the precast side wall; the precast middle plate is composed of a plurality of middle plate superimposed precast blocks; the middle plate superimposed precast block comprises a second steel truss and a second concrete precast block provided at the lower part of the second steel truss; a middle plate cast-in-place layer is provided on the top of the second concrete precast block; the cast-in-place core wall and the middle plate cast-in-place layer are integrally cast.

[0007] Preferably, first anchor bars and steel bar connectors are pre-buried inside the enclosure structure; the lower row of main bars inside the cast-in-place base plate are connected to the corresponding first anchor bars through the steel bar connectors; and the upper row of main bars of the second steel bar truss are connected to the corresponding first anchor bars through the steel bar connectors.

[0008] Preferably, the top of the first prefabricated concrete block is fixedly connected to the enclosure structure via a tie rod.

[0009] Preferably, the pull rod includes an anchoring section, a pull ring section and a connecting section; the anchoring section and the pull ring section are respectively threadedly connected to the two ends of the connecting section; the end of the anchoring section away from the connecting section is arranged inside the retaining structure; the end of the pull ring section away from the connecting section is sleeved on the main reinforcement of the first steel truss away from the retaining structure.

[0010] Preferably, first shear pin key holes are provided on both sides of the bottom of the second precast concrete block; second shear pin key holes corresponding to the first shear pin key holes are provided on the top of the first precast concrete block and the precast middle longitudinal beam; and shear steel bars are provided inside the first shear pin key holes and the corresponding second shear pin key holes.

[0011] Preferably, a side wall corbel is provided on the top of the first precast concrete block away from the retaining structure; a middle longitudinal beam corbel is provided on both sides of the precast middle longitudinal beam; and the second shear pin keyhole is provided at the top of the side wall corbel and the top of the middle longitudinal beam corbel.

[0012] Preferably, a reinforcing steel cage is provided between the first steel trusses adjacent to each other on the left and right.

[0013] A construction method of the above-mentioned Yonglin composite assembly station structure comprises the following steps:

[0014] S1. Construct enclosure structures and excavate foundation pits;

[0015] S2, construction of cast-in-place base plate;

[0016] S3, installing prefabricated columns;

[0017] S4, assembling the side wall superimposed prefabricated blocks on both sides of the top of the cast-in-place bottom plate to form a prefabricated side wall;

[0018] S5. Install the prefabricated middle longitudinal beam on the prefabricated column;

[0019] S6. Assemble the middle plate superimposed prefabricated blocks on the prefabricated side walls and the top of the middle longitudinal beam to form a prefabricated middle plate;

[0020] S7. Install the side wall and middle plate construction section plugging end formwork;

[0021] S8. Pour concrete on the top of the second precast concrete block, between the enclosure structure and the first precast concrete block to form a cast-in-place core wall and a cast-in-place middle plate layer.

[0022] Compared with the prior art, the present invention has achieved the following technical effects: in the present invention, the retaining structure and the prefabricated side wall are "two walls in one" through the cast-in-place core wall, forming a structural system of "retaining structure + cast-in-place core wall + prefabricated side wall", which can eliminate the structural waterproof layer and reduce the thickness of the side wall. At the same time, the cast-in-place core wall and the cast-in-place layer of the middle plate are cast at one time and formed in one piece, thereby reducing the setting of a horizontal construction joint and greatly improving the structural integrity and waterproof quality. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 It is a schematic diagram of a permanent and temporary composite assembly station structure of the present invention;

[0024] Figure 2 It is a schematic diagram of the connection part of the prefabricated middle plate, prefabricated side wall and prefabricated middle longitudinal beam;

[0025] Figure 3 It is a partial enlarged schematic diagram of the connection part between the prefabricated middle plate and the prefabricated side wall;

[0026] Figure 4 This is a schematic diagram of the connection between the prefabricated side wall, the enclosure structure and the cast-in-place bottom slab;

[0027] Figure 5 is a schematic diagram of the structure of the pull rod;

[0028] Figure 6 It is a top view of the splicing part of the superimposed prefabricated blocks of the side wall;

[0029] Figure 7 It is a side view of the splicing part of the superimposed prefabricated blocks of the side wall;

[0030] Figure 8 This is a schematic diagram of the connection between the cast-in-place base plate and the enclosure structure;

[0031] Fig. 9 This is a schematic diagram of the cup mouth;

[0032] Fig.10 This is the main view of the side wall composite prefabricated blocks;

[0033] Fig.11 It is a side view of the precast blocks for the side walls;

[0034] Fig.12 This is the main view of the middle plate composite prefabricated block;

[0035] Fig.13 It is a top view of the middle plate superimposed prefabricated block;

[0036] In the figure: 1, enclosure structure; 2, precast column; 3, precast middle longitudinal beam; 4, cast-in-place bottom plate; 5, precast side wall; 501, side wall composite precast block; 5011, first steel truss; 5012, first concrete precast block; 6, precast middle plate; 601, middle plate composite precast block; 6011, second steel truss; 6012, second concrete precast block; 7, cast-in-place core wall; 8, middle plate cast-in-place layer; 9. First anchor bar; 10. Steel bar connector; 11. Pull rod; 1101. Anchor section; 1102. Pull ring section; 1103. Connecting section; 12. First shear pin keyhole; 13. Second shear pin keyhole; 14. Shear steel bar; 15. Side wall corbel; 16. Middle longitudinal beam corbel; 17. Strengthening steel cage; 18. Second anchor bar; 19. Prefabricated top slab; 20. Cast-in-place top slab layer; 21. Cup mouth. DETAILED DESCRIPTION

[0037] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0038] Reference Figure 1-13 As shown, the present invention provides a permanent-temporary composite assembly station structure, comprising: a retaining structure 1, a foundation pit, a prefabricated column 2, a prefabricated middle longitudinal beam 3, a cast-in-place bottom plate 4, a prefabricated side wall 5 and a prefabricated middle plate 6; the cast-in-place bottom plate 4 is arranged at the bottom of the foundation pit; the prefabricated column 2 is arranged at the middle position of the top of the cast-in-place bottom plate 4; the prefabricated middle longitudinal beam 3 is arranged on the prefabricated column 2; prefabricated side walls 5 are arranged on both sides of the top of the cast-in-place bottom plate 4; the prefabricated side wall 5 is composed of a plurality of side wall composite prefabricated blocks 501; the side wall composite prefabricated block 501 comprises a first steel truss 5011 and a first concrete prefabricated block 5012 arranged on the side of the first steel truss 5011 away from the prefabricated side wall 5, wherein the first concrete prefabricated block 5 012 also serves as a formwork, which can achieve the effect of formwork-free support for side wall structural components; a cast-in-place core wall 7 is arranged between the enclosure structure 1 and the first concrete precast block 5012; the precast middle plate 6 is arranged on the top of the precast middle longitudinal beam 3 and the precast side wall 5; the precast middle plate 6 is composed of a plurality of middle plate superimposed precast blocks 601; the middle plate superimposed precast block 601 includes a second steel truss 6011 and a second concrete precast block 6012 arranged at the lower part of the second steel truss 6011, wherein the second concrete precast block 6012 also serves as a formwork to achieve the effect of a formwork on the bottom surface of the middle plate; a middle plate cast-in-place layer 8 is arranged on the top of the second concrete precast block 6012; the cast-in-place core wall 7 and the middle plate cast-in-place layer 8 are cast and formed as one piece.

[0039] In the above technical solution, the retaining structure and the prefabricated side wall are "into one" through the cast-in-place core wall, forming a structural system of "retaining structure + cast-in-place core wall + prefabricated side wall", which can eliminate the structural waterproof layer and reduce the thickness of the side wall. At the same time, the cast-in-place core wall and the cast-in-place layer of the middle plate are cast at one time and formed as one piece, thereby reducing the setting of a horizontal construction joint and greatly improving the structural integrity and waterproof quality.

[0040] In this embodiment, the enclosure structure 1 is an underground continuous wall.

[0041] In this embodiment, first anchor bars 9 and steel bar connectors 10 corresponding to each layer of structural plates are pre-buried inside the enclosure structure 1; the lower row of main bars inside the cast-in-place base plate 4 are connected to the corresponding first anchor bars 9 through the steel bar connectors 10; the upper row of main bars of the second steel bar truss 6011 are connected to the corresponding first anchor bars 9 through the steel bar connectors 10; through the pre-buried enclosure structure technology, the steel bar connection between each layer of structural plates and the enclosure structure is achieved, and the overall force can be reliable.

[0042] In this embodiment, the top of the first prefabricated concrete block 5012 is fixedly connected to the enclosure structure 1 via a tie rod 11 .

[0043] In this embodiment, the pull rod 11 includes an anchoring section 1101, a pull ring section 1102 and a connecting section 1103; the anchoring section 1101 and the pull ring section 1102 are respectively threadedly connected to the two ends of the connecting section 1103; the end of the anchoring section 1101 away from the connecting section 1103 is arranged inside the retaining structure 1; the end of the pull ring section 1102 away from the connecting section 1103 is sleeved on the main reinforcement of the first steel truss 5011 away from the retaining structure 1.

[0044] In this embodiment, first shear pin key holes 12 are provided on both sides of the bottom of the second precast concrete block 6012; second shear pin key holes 13 corresponding to the first shear pin key holes 12 are provided on the top of the first precast concrete block 5012 and the precast middle longitudinal beam 3; shear steel rods 14 are provided inside the first shear pin key holes 12 and the corresponding second shear pin key holes 13.

[0045] In this embodiment, a side wall corbel 15 is provided on the top of the first precast concrete block 5012 away from the retaining structure 1; a middle longitudinal beam corbel 16 is provided on both sides of the precast middle longitudinal beam 3; and the second shear pin keyhole 13 is provided at the top of the side wall corbel 15 and the top of the middle longitudinal beam corbel 16.

[0046] In this embodiment, a reinforcing steel cage 17 is provided between the adjacent first steel trusses 5011 on the left and right to ensure reliable structural connection between the cast-in-place core wall 7 and the enclosure structure 1 and between the assembly joints of the side wall composite prefabricated blocks 501.

[0047] In this embodiment, the longitudinal spacing of the reinforcing steel cage 17 is 1950mm, the stirrups are made of Φ12 grade one steel, arranged in a trapezoidal shape of 350x240x150mm, and the vertical spacing is 150mm; the vertical bars are made of 6 Φ18 grade three steels, the length of which is the same as the main bars in the side wall composite prefabricated block 501

[0048] In this embodiment, the first precast concrete block 5012 is precast with a thickness of 150 mm and a width of 1945 mm. A 150x200 mm side wall corbel 15 is provided on one side of the top. The height is determined according to the net height of the side wall. The weight of a single component does not exceed 10 t and is hoisted using conventional equipment. A Φ50 mm second shear pin key hole 13 is longitudinally reserved at the top of the side wall corbel 15, symmetrically arranged with a spacing of 200 to 300 mm, and a hole depth of 150 mm.

[0049] In this embodiment, the second prefabricated concrete block 6012 is prefabricated with a thickness of 200 mm and a width of 1945 mm. Φ50 mm first shear pin key holes 12 are reserved on both sides of the bottom of the second prefabricated concrete block 6012 and are symmetrically arranged with a spacing of 200 to 300 mm.

[0050] In this embodiment, the diameter of the shear-resistant steel rod 14 is Φ30 mm.

[0051] In this embodiment, the permanent composite assembly station structure also includes a prefabricated top plate 19 and a top plate cast-in-place layer 20; the prefabricated top plate 19 is spliced ​​by multiple top plate composite prefabricated blocks; the top plate composite prefabricated blocks have the same structure as the middle plate composite prefabricated blocks 601; the top plate cast-in-place layer 20 is arranged on the top of the prefabricated top plate 19.

[0052] In this embodiment, a prefabricated side wall 5 is provided on one side of the bottom of the prefabricated top plate 19 close to the retaining structure 1, and the other side is provided on the corresponding prefabricated middle longitudinal beam 3; a cast-in-place core wall 7 is also provided between the prefabricated side wall 5 and the retaining structure 1; the cast-in-place core wall 7 is integrally cast with the cast-in-place layer 20 of the top plate.

[0053] The present invention also provides a construction method for a permanent and temporary composite assembly station structure, comprising the following steps:

[0054] S1. Construct enclosure structure 1 and excavate foundation pit;

[0055] S2, construction of cast-in-place base plate 4;

[0056] S3, installing prefabricated column 2;

[0057] S4, assembling the side wall superimposed prefabricated blocks 501 on both sides of the top of the cast-in-place bottom plate 4 to form a prefabricated side wall 5;

[0058] S5, installing the prefabricated middle longitudinal beam 3 on the prefabricated column 2;

[0059] S6, assembling the middle plate superimposed prefabricated blocks 601 on the prefabricated side wall 5 and the top of the middle longitudinal beam to form a prefabricated middle plate 6;

[0060] S7. Install the side wall and middle plate construction section plugging end formwork;

[0061] S8. Pour concrete on the top of the second concrete precast block 6012, between the enclosure structure 1 and the first concrete precast block 5012 to form a cast-in-place core wall 7 and a cast-in-place middle plate layer 8.

[0062] In this embodiment, before the construction of the enclosure structure 1, the first anchor bars 9 and the steel bar connectors 10 corresponding to the main bars of each layer of the structural plates are embedded according to the design elevation of each layer of the structural plates during the production of the enclosure structure steel cage, and the vertical elevation is strictly controlled during the trough hoisting, and the allowable deviation is not more than 5 mm to ensure subsequent effective connection.

[0063] In this embodiment, the construction of the cast-in-place bottom plate in S2 specifically includes the following steps: 1) During the excavation of the foundation pit, the retaining structure 1 is roughened in layers to expose the bluestone; 2) After the foundation pit is applied with a cushion layer, the steel bar connectors 10 corresponding to the cast-in-place bottom plate 4 embedded in the retaining structure 1 are removed and cleaned, the bottom plate steel bars are tied, and the lower row of main bars of the bottom plate steel bars are connected to the steel bar connectors 10 one by one; 3) A cup mouth 21 is reserved for the support formwork at the low side wall, and the plane is arranged in a trapezoidal shape of 350x240x150mm, with a depth of 300mm and a spacing of 1950mm. The bottom plate concrete is poured to form a cast-in-place bottom plate.

[0064] In this embodiment, the assembly of the side wall prefabricated block 501 in S4 specifically includes the following steps: 1) bottom fixation: the side wall prefabricated block 501 is assembled by conventional equipment such as a gantry crane, and the exposed main reinforcement at the bottom is fully anchored into the grouting sleeve for fixation; 2) top fixation: after the foundation pit is excavated to the design elevation of the tie rod 11, the tie rod anchor hole is drilled; after the side wall prefabricated block 501 is in place, the anchor section 1101 is installed in sequence, the pull ring section 1102 is inserted, and the connecting section 1103 is used for threaded connection in the middle.

[0065] In this embodiment, in S4, after the side wall prefabricated blocks 501 are assembled, the prefabricated reinforcing steel cage 17 is installed in the joints between adjacent side wall prefabricated blocks 501; the bottom of the reinforcing steel cage 17 is inserted into the cup mouth 21 reserved in the short side wall, with an insertion depth of 300 mm, and is anchored with the second anchor bar 18 embedded in the cast-in-place base plate 4, and the top of the reinforcing steel cage 17 is tied and fixed to the K-type bars in the side wall prefabricated blocks 501.

[0066] In this embodiment, at S6, the specific steps of assembling the middle plate composite prefabricated block 601 are as follows: 1) Assembling in place: hoisting the middle plate composite prefabricated block 601, so that the middle plate composite prefabricated block 601 is located on the side wall bracket 15 and the middle longitudinal beam bracket 16, wherein the spacing between the two ends of the middle plate composite prefabricated block 601, the exposed stirrups of the prefabricated middle longitudinal beam 3 and the exposed main reinforcement of the top of the side wall composite prefabricated block 501 is 150mm, when the middle plate composite prefabricated block 601 is assembled in place, the main reinforcement of the middle plate composite prefabricated block 601 is on the side wall composite prefabricated block 501 main reinforcement and the prefabricated The center distance of the stirrups of the middle longitudinal beam 3 is 75mm, and the shear steel rod 14 is installed: after the second shear pin key holes 13 on the side wall corbels 15 and the middle longitudinal beam corbels 16 are completely aligned with the first shear pin key holes 12 on both sides of the bottom of the second concrete precast block 6012, the shear steel rod 14 is installed, and high-strength non-shrinkage grouting material is poured into the first shear pin key holes 12 and the second shear pin key holes 13. After the grouting material reaches the strength, the stable connection system of the side wall, the middle plate and the middle longitudinal beam is completed to resist the lateral pressure of the concrete pouring of the side wall core.

[0067] In this embodiment, in S6, after the prefabricated middle plate 6 is installed in place, the roughening quality of the enclosure structure 1 is checked, the steel bar connectors 10 corresponding to the prefabricated middle plate 6 embedded in the enclosure structure 1 are removed and cleaned, the remaining steel bars of the middle plate composite prefabricated blocks and the prefabricated middle longitudinal beams are tied as a whole, and the upper row of main bars of the middle plate composite prefabricated blocks 601 are connected one by one to the steel bar connectors 10.

[0068] In this embodiment, the construction method of the prefabricated top plate 19 and the top plate cast-in-place layer 20 can be implemented by referring to the above S4-S8, except that the main reinforcement at the bottom of the upper prefabricated side wall 5 is connected to the main reinforcement at the top of the lower prefabricated side wall 5.

[0069] The above description is only a preferred embodiment of the present invention and does not limit the technical scope of the present invention. Therefore, any slight modifications, equivalent changes and modifications made to the above embodiments based on the technical essence of the present invention are still within the scope of the technical solution of the present invention.

Claims

1. A permanent and temporary composite assembly station structure, characterized in that: include: A retaining structure (1), a foundation pit, a prefabricated column (2), a prefabricated middle longitudinal beam (3), a cast-in-place bottom plate (4), a prefabricated side wall (5) and a prefabricated middle plate (6); the cast-in-place bottom plate (4) is arranged at the bottom of the foundation pit; the prefabricated column (2) is arranged at the middle position of the top of the cast-in-place bottom plate (4); the prefabricated middle longitudinal beam (3) is arranged on the prefabricated column (2); prefabricated side walls (5) are arranged on both sides of the top of the cast-in-place bottom plate (4); the prefabricated side walls (5) are formed by splicing a plurality of side wall superimposed prefabricated blocks (501); the side wall superimposed prefabricated blocks (501) include a first steel truss (5011) and a first steel truss (5011) arranged on the side of the first steel truss (5011) away from the prefabricated side wall (5). A concrete precast block (5012); a cast-in-place core wall (7) is provided between the enclosure structure (1) and the first concrete precast block (5012); the precast middle plate (6) is arranged on the top of the precast middle longitudinal beam (3) and the precast side wall (5); the precast middle plate (6) is composed of a plurality of middle plate superimposed precast blocks (601) spliced ​​together; the middle plate superimposed precast block (601) includes a second steel truss (6011) and a second concrete precast block (6012) arranged at the lower part of the second steel truss (6011); a middle plate cast-in-place layer (8) is provided on the top of the second concrete precast block (6012); the cast-in-place core wall (7) and the middle plate cast-in-place layer (8) are integrally cast and formed.

2. A permanent and temporary composite assembly station structure according to claim 1, characterized in that: The enclosure structure (1) is pre-buried with first anchor bars (9) and steel bar connectors (10); the lower row of main bars inside the cast-in-place base plate (4) are connected to the corresponding first anchor bars (9) via the steel bar connectors (10); and the upper row of main bars of the second steel bar truss (6011) are connected to the corresponding first anchor bars (9) via the steel bar connectors (10).

3. A permanent and temporary composite assembly station structure according to claim 2, characterized in that: The top of the first prefabricated concrete block (5012) is fixedly connected to the enclosure structure (1) via a tie rod (11).

4. A permanent and temporary composite assembly station structure according to claim 3, characterized in that: The pull rod (11) comprises an anchoring section (1101), a pull ring section (1102) and a connecting section (1103); the anchoring section (1101) and the pull ring section (1102) are respectively threadedly connected to the two ends of the connecting section (1103); the end of the anchoring section (1101) away from the connecting section (1103) is arranged inside the enclosure structure (1); the end of the pull ring section (1102) away from the connecting section (1103) is sleeved on the main reinforcement of the first steel truss (5011) on the side away from the enclosure structure (1).

5. The permanent and temporary combined assembly station structure according to claim 1 is characterized in that: The second precast concrete block (6012) is provided with first shear pin key holes (12) on both sides of the bottom; the first precast concrete block (5012) and the top of the precast middle longitudinal beam (3) are provided with second shear pin key holes (13) corresponding to the first shear pin key holes (12); and shear steel bars (14) are provided inside the first shear pin key holes (12) and the corresponding second shear pin key holes (13).

6. A permanent and temporary composite assembly station structure according to claim 5, characterized in that: A side wall corbel (15) is provided on the top of the first precast concrete block (5012) on the side away from the enclosure structure (1); a center longitudinal beam corbel (16) is provided on both sides of the precast center longitudinal beam (3); and the second shear pin keyhole (13) is provided at the top of the side wall corbel (15) and the top of the center longitudinal beam corbel (16).

7. The permanent and temporary combined assembly station structure according to claim 1 is characterized in that: A reinforcing steel cage (17) is provided between the first steel trusses (5011) adjacent to each other on the left and right.

8. A construction method for a permanent temporary composite assembly station structure as claimed in any one of claims 1 to 7, comprising the following steps: S1. Construct the enclosure structure (1) and excavate the foundation pit; S2, constructing a cast-in-place base plate (4); S3, installing prefabricated columns (2); S4, assembling the side wall superimposed prefabricated blocks (501) on both sides of the top of the cast-in-place base plate (4) to form a prefabricated side wall (5); S5, installing the prefabricated middle longitudinal beam (3) on the prefabricated column (2); S6, assembling the middle plate superimposed prefabricated blocks (601) on the prefabricated side walls (5) and the top of the middle longitudinal beam to form a prefabricated middle plate (6); S7. Install the side wall and middle plate construction section plugging end formwork; S8. Concrete is poured on the top of the second precast concrete block (6012), between the enclosure structure (1) and the first precast concrete block (5012) to form a cast-in-place core wall (7) and a cast-in-place middle plate layer (8).

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