Vertical structure docking method for reverse construction structure

Abstract

The invention discloses a method for butt jointing a vertical structure of a reverse construction structure, comprising the following steps: 1. Before the construction of an underground structure, a vertical line is drawn downward from the reverse construction zero-layer structure, and the coordinates of the foundation bottom plate are positioned secondarily according to the zero-layer structure that has been formed; 2. When a small amount of horizontal deviation occurs during the butt jointing of the vertical structure, reinforcement binding is performed at the butt jointing node; the upper and lower offset wall reinforcements (11) in the offset wall are bent and butt jointed, and the thickness of the wall is increased by the offset; a third embedded reinforcement (21) is arranged between the offset position of the column of the zero-layer floor slab (12) and the column (2), and the column reinforcement (22) in the column (2) is bent and butt jointed; 3. A template system (7) is supported at the butt jointing node, and a bell mouth (4) is arranged at the connection position between the template system (7) and the beam body (3), and concrete is poured at the butt jointing position through the bell mouth (4). The invention can improve the construction quality of the butt jointing node of the reverse construction structure.

Description

Technical Field

[0001] The invention relates to a building construction method, in particular to a vertical structure butt joint method of a reverse construction structure. Background Art

[0002] With the continuous development of the construction industry, reverse construction structures are increasingly being used in the field of super-high-rise buildings. The reverse construction method enables the construction of above-ground structures and underground structures at the same time, effectively shortening the construction period of super-high-rise buildings. However, while shortening the construction period, there are common quality problems such as horizontal deviation of the vertical structure, poor connection quality, many leakage risks, poor compactness, and poor load transfer effect.

[0003] Common reverse construction joints have the following problems:

[0004] 1. Since the reverse construction structure first constructs the zero-layer structure, the construction of the above-ground structure and the excavation of the underground structure are carried out simultaneously. Due to the stress release of the excavation, a small amount of horizontal deformation is inevitable. When the underground structure is constructed from bottom to top to the zero-layer structure and docked with the zero-layer structure, there will be a small amount of deviation in the docking position of the wall and column, resulting in the ineffective vertical transfer of the load, affecting the safe use of the building structure.

[0005] 2. The main methods for connecting reverse construction structures are over-pouring, grouting and grouting, but they all have their own common quality problems. The quality of the connecting structure formed by different construction methods is poor compared to the one-time formed concrete vertical structure, and there are many quality risks in terms of density and anti-leakage.

[0006] Therefore, it is necessary to provide a butt joint method to improve the construction quality of the butt joint part of the reverse construction structure. Summary of the invention

[0007] The purpose of the present invention is to provide a vertical structure butt joint method for a reverse construction structure, which can improve the construction quality at the butt joint nodes of the reverse construction structure.

[0008] The present invention is achieved in that:

[0009] A method for butt jointing a vertical structure of a reverse construction structure, comprising the following steps:

[0010] Step 1: Before the construction of the underground structure, a vertical line is drawn downward from the reverse-constructed zero-layer structure, and the coordinates of the foundation bottom plate are re-positioned according to the already formed zero-layer structure;

[0011] Step 2: When a small amount of horizontal deviation occurs during the butt joint of the vertical structure, tie the steel bars at the butt joint;

[0012] At the joint node of the offset wall: the upper and lower offset wall reinforcements in the offset wall are bent and then butt-jointed, and the offset increases the thickness of the wall;

[0013] At the joint node of the offset column: a third embedded reinforcement is set between the offset position of the zero-floor slab column and the column, and the column reinforcement in the column is bent and then jointed;

[0014] Step 3: Set up the formwork system at the joint node, and set a bell mouth at the joint between the formwork system and the beam body, and pour concrete at the joint through the bell mouth.

[0015] In the step 2, at the butt joint of the offset wall, the offset wall reinforcement is bent at the butt joint end so that it can butt joint with the non-offset wall reinforcement.

[0016] In the step 2, at the docking node of the offset wall, a first embedded bar is preset within the offset width of the wall below the zero-floor slab, so that the lower end of the first embedded bar is docked with the wall reinforcement located below; at the same time, a second embedded bar is preset within the offset width of the wall above the underground first floor slab, so that the upper end of the second embedded bar is docked with the wall reinforcement located above.

[0017] In the step 2, at the docking node of the offset column, the column steel bars are inclined along the offset direction, and tie bars are arranged in the column. The end of the column steel bars is bent and docked with one end of the tie bar, and the other end of the tie bar is vertically connected to the third embedded bar, so that the offset side of the column docking part is an inclined structure, forming a corbel column structure.

[0018] Enlarged stirrups are arranged at the butt joints of the offset column, and the arrangement spacing of the enlarged stirrups is smaller than the arrangement spacing of the original stirrups in the column.

[0019] The step 3 comprises the following sub-steps:

[0020] Step 3.1: Set up a pump pipe fixing frame beside the formwork system at the joint part, and lay the concrete pump pipe on the pump pipe fixing frame so that the concrete pump pipe is located below the bell mouth;

[0021] Step 3.2: The bell mouth is tiltedly set on the pump pipe fixing frame through the diagonal brace. When the columns are butt-jointed, a bell mouth is separately set on the formwork system of each column. When the walls are butt-jointed, multiple bell mouths are spaced apart on the formwork system of the wall along the length direction of the wall.

[0022] Step 3.3: Set up a construction operation frame beside the pump pipe fixing frame, and connect the construction operation frame and the pump pipe fixing frame into an integrated structure;

[0023] Step 3.4: Use the over-pouring method to pour concrete into the joint through the concrete pump pipe.

[0024] In the step 3, before pouring concrete, a number of full-section pump pipes are pre-buried at intervals at the bottom of the beam body, and after the formwork system, construction operation frame and pump pipe fixing frame are removed, grouting is performed at the joint between the beam body and the poured concrete through the full-section pump pipes.

[0025] In the step 3.1, first pump pipe holes are reserved on the zero-story slab and the first underground floor slab at positions corresponding to the insertion positions of the concrete pump pipes, and the slab reinforcement is bent to avoid the first pump pipe holes during the tying construction; the concrete pump pipe passes through the zero-story slab and the first underground floor slab through the first pump pipe holes, and the concrete pump pipe is fixed in the first pump pipe holes by means of wedge blocks.

[0026] In the step 3.1, a second pump pipe hole is reserved on the beam body at a position corresponding to the penetration position of the concrete pump pipe. During the beam body reinforcement binding construction, the second pump pipe hole is cut off, and a number of reinforcing bars are arranged around the second pump pipe hole. The several reinforcing bars are overlapped with the beam body reinforcement. The concrete pump pipe passes through the beam body through the second pump pipe hole, and the concrete pump pipe is fixed in the second pump pipe hole by a wedge block.

[0027] The concrete pump pipe is arranged horizontally and vertically, and the horizontally arranged concrete pump pipe is vertically connected with the vertically arranged concrete pump pipe through a 90° connection point.

[0028] Compared with the prior art, the present invention has the following beneficial effects:

[0029] 1. The present invention performs secondary positioning of the coordinates of the foundation slab according to the formed zero-layer structure before the construction of the underground structure, thereby reducing the amount of later docking deviation, which is beneficial to improving the construction quality of the reverse construction structure and improving the inevitable small amount of horizontal deviation problem in the reverse construction docking process.

[0030] 2. The present invention deepens the offset walls and columns, adjusts the steel bar arrangement and concrete structure by adding embedded bars, bending and connecting steel bars, and increasing the density of stirrups, thereby effectively ensuring the effective and uniform transmission of vertical loads, which is beneficial to improving the construction quality of the reverse construction structure and solving the problem of difficulty in connecting the vertical structure due to the inevitable small amount of horizontal deviation during the reverse construction connection process.

[0031] 3. The present invention adopts the concrete pouring method of over-pouring and full-section grouting, which greatly improves the density of concrete at the joints. The possible joint width is reduced by over-pouring, and the gap is filled by full-section cement grouting. While ensuring the density of the structure, the anti-leakage effect of the structure is improved, especially at the joints of the exterior walls. Reasonable grouting can significantly control the hidden dangers of leakage.

[0032] 4. The present invention solves the quality risks of local deviation and poor density at the joint of the reverse construction structure, ensures the joint effect and safe use of the structure, has good molding quality at the joint position, is simple and practical, and is easy to operate on site. It has good implementation effect and has good prospects for promotion and application in construction projects using reverse construction. BRIEF DESCRIPTION OF THE DRAWINGS

[0033] Figure 1 It is a construction schematic diagram of the butt joint of offset walls in the vertical structure butt joint method of the reverse construction structure of the present invention;

[0034] Figure 2 It is a construction schematic diagram of butt jointing of offset columns in the vertical structure butt jointing method of the reverse construction structure of the present invention;

[0035] Figure 3 It is a construction schematic diagram of step 3 in the vertical structure docking method of the reverse construction structure of the present invention;

[0036] Figure 4 It is a setting diagram of the bell mouth of the template system of the offset wall in the vertical structure docking method of the reverse construction structure of the present invention;

[0037] Figure 5 It is a schematic diagram of the layout of the concrete pump pipe in the vertical structure docking method of the reverse construction structure of the present invention;

[0038] Figure 6 It is a schematic diagram of the reservation of the first pump pipe hole in the vertical structure docking method of the reverse construction structure of the present invention;

[0039] Figure 7 It is a schematic diagram of the reservation of the second pump pipe hole in the vertical structure docking method of the reverse construction structure of the present invention.

[0040] In the figure, wall reinforcement 11, zero-story slab 12, first embedded reinforcement 13, underground first floor slab 14, second embedded reinforcement 15, floor reinforcement 16, column 2, third embedded reinforcement 21, column reinforcement 22, tie reinforcement 23, corbel column structure 24, dense stirrups 25, beam 3, beam reinforcement 31, bell mouth 4, diagonal bracing rod 41, pump pipe fixing frame 5, concrete pump pipe 51, full-section pump pipe 52, first pump pipe hole 53, second pump pipe hole 54, reinforcing rib 55, 90° connection point 56, construction operation frame 6, and formwork system 7. DETAILED DESCRIPTION

[0041] The present invention will be further described below in conjunction with the accompanying drawings and specific embodiments.

[0042] A method for butt jointing a vertical structure of a reverse construction structure, comprising the following steps:

[0043] Step 1: Before the construction of the underground structure, a vertical line is drawn from the reverse-constructed zero-layer structure, and the coordinates of the foundation slab are re-positioned according to the already formed zero-layer structure to reduce the horizontal offset correction amount during the later docking.

[0044] Step 2: When a small amount of horizontal deviation occurs when the vertical structure is butt-jointed, steel bars are tied at the butt joints.

[0045] Please see attached Figure 1 At the butt joint of the offset wall: the upper and lower offset wall reinforcements 11 in the offset wall are bent and butt jointed, and the offset increases the thickness of the wall.

[0046] In the case where a small amount of horizontal deviation occurs in the wall at the joint, the wall reinforcement 11, i.e., the reserved reinforcement of the reverse construction structure and the wall reinforcement of the newly built underground structure, cannot be normally vertically joined due to a small amount of horizontal deviation of the reverse construction structure. The joint layer is generally set as a public area, and the wall is thickened to ensure the vertical structure force transmission system.

[0047] Please see attached Figure 2 , at the docking node of the offset column: a third embedded reinforcement 21 is arranged between the offset position of the column of the zero-floor slab 12 and the column 2, and the column reinforcement 22 in the column 2 is bent and docked.

[0048] Please see attached Figure 3 Step 3: Support the formwork system 7 at the joint node, and set the bell mouth 4 at the joint between the formwork system 7 and the beam body 3, and pour concrete at the joint through the bell mouth 4.

[0049] The formwork system 7 adopts the conventional formwork system of the prior art, which is mainly composed of wooden formwork, wooden squares, steel pipes, tension bolts, etc., and adopts the formwork support construction process of the prior art, which will not be repeated here.

[0050] Please see attached Figure 1 In the step 2, at the butt joint of the offset wall, the offset wall reinforcement 11 is bent at the butt joint end so that it can butt joint with the non-offset wall reinforcement 11.

[0051] Preferably, the bending angle of the offset wall reinforcement 11 is greater than 1:6 to minimize the load transfer effect on the longitudinal part of the wall reinforcement 11. At the same time, the offset wall reinforcement 11 needs to be rust-free before docking to ensure that the concrete bond strength at the connection position meets the requirements, and the severely corroded wall reinforcement 11 should be reinforced if necessary.

[0052] Please see attached Figure 1In the step 2, at the docking node of the offset wall, a first embedded reinforcement 13 is preset within the offset width of the wall below the zero-floor slab 12, so that the lower end of the first embedded reinforcement 13 is docked with the wall reinforcement 11 located below; at the same time, a second embedded reinforcement 15 is preset within the offset width of the wall above the underground first floor slab 14, so that the upper end of the second embedded reinforcement 15 is docked with the wall reinforcement 11 located above.

[0053] Since the wall is thickened with the horizontal offset, it is necessary to supplement the wall with steel bars within the offset width, that is, to add the first embedded steel bars 13 and the second embedded steel bars 15 to ensure that the wall is stressed and avoid wall cracking.

[0054] During the construction of the first and second embedded bars 13 and 15, they should be positioned according to the actual deviation of the docking layer. Since a small amount of horizontal deviation occurs in the upper and lower vertical structures, embedded bars are used to effectively connect with the corresponding wall reinforcements 11. The number of the first and second embedded bars 13 and 15 is the same as the number of wall reinforcements 11, as a reinforcement measure to ensure that the load can be effectively transmitted downward after docking.

[0055] Please see attached Figure 2 In the step 2, at the docking node of the offset column, the column steel bar 22 is inclined along the offset direction, and a tie bar 23 is arranged in the column 2. The end of the column steel bar 22 is bent and docked with one end of the tie bar 23, and the other end of the tie bar 23 is vertically connected to the third embedded bar 21, so that the offset side of the docking part of the column 2 is an inclined structure, forming a corbel column structure 24.

[0056] Since there is a horizontal deviation when the columns are butt-jointed, they cannot be butt-jointed normally. Therefore, a corbel column structure 24 is used to set the butt-jointed steel bars in the form of a corbel, thereby ensuring the force safety of the butt-jointed parts.

[0057] The third embedded reinforcement 21 should be positioned according to the actual deviation of the docking layer. Since a small amount of horizontal deviation occurs in the upper and lower vertical structures, embedded reinforcement is adopted to effectively connect with the corresponding column reinforcement 22. The number of the third embedded reinforcement 21 is the same as the number of the corresponding column reinforcement 22, as a reinforcement measure to ensure that the load can be effectively transmitted downward after docking.

[0058] Please see attached Figure 2 At the joint nodes of the offset column, denser stirrups 25 are arranged, and the arrangement spacing of the denser stirrups 25 is smaller than the arrangement spacing of the original stirrups in the column 2.

[0059] According to the force transmission form of the corbel column structure 24, necessary reinforcement is performed on the weak parts of the structure to ensure the vertical transmission of the load.

[0060] The step 3 comprises the following sub-steps:

[0061] Please see attached Figure 3 Step 3.1: Set up a pump pipe fixing frame 5 beside the formwork system 7 at the docking position, and lay a concrete pump pipe 51 on the pump pipe fixing frame 5 so that the concrete pump pipe 51 is located below the bell mouth 4.

[0062] The pump pipe fixing frame 5 is used to lay the concrete pump pipe 51. When the pump pipe fixing frame 5 is erected, sufficient casting operation surface and concrete pump pipe 51 support space should be left between the zero-floor slab 12. The distance between the top surface of the pump pipe fixing frame 5 and the zero-floor slab 12 is preferably 1100mm, and the width is controlled within 1m to ensure that the construction personnel have a better operating surface.

[0063] Please see attached Figure 3 Step 3.2: The bell mouth 4 is tiltedly set on the pump pipe fixing frame 5 through the diagonal support rod 41. When the columns are connected, a bell mouth 4 is separately set on the template system 7 of each column. When the wall is connected, multiple bell mouths 4 are spaced apart on the template system 7 of the wall along the length direction of the wall.

[0064] Please see attached Figure 4 In general, the butt joint layer is in an underground structure, and the height of a single-story building is above 4m. The super pouring method can be used for construction, and a corresponding bell mouth 4 can be set. Preferably, the number of bell mouths 4 when the wall is butt jointed can be determined according to the length of the wall. A bell mouth 4 with a width of 300mm can be set at intervals of 1500mm to ensure that the concrete pouring has a good compacting effect; when pouring concrete, the concrete fills the bell mouth, and necessary chiseling work is performed after the connection is completed. The bell mouth 4 is supported and fixed by one or more diagonal braces 41 to ensure stability during the concrete pouring process.

[0065] Please see attached Figure 3 Step 3.3: A construction operation frame 6 is set up beside the pump pipe fixing frame 5, and the construction operation frame 6 is connected with the pump pipe fixing frame 5 to form an integrated structure.

[0066] The pump pipe fixing frame 5 and the construction operation frame 6 are arranged together. Since the floors of the docking parts are usually higher, the construction assistance frame 6 is needed. Sufficient operating surface for construction personnel should be reserved between the top of the construction operation frame 6 and the zero-floor slab 12. The distance between the top of the construction operation frame 6 and the zero-floor slab 12 is preferably 1700mm to ensure that the construction personnel have a good standing space.

[0067] Step 3.4: Use the super pouring method to pour concrete into the joint part through the concrete pump pipe 51. The super pouring method is one of the existing concrete pouring methods and will not be described in detail here.

[0068] Please see attached Figure 3In the step 3, before pouring concrete, a number of full-section pump pipes 52 are pre-buried at intervals at the bottom of the beam body 3, and after the formwork system 7, the construction operation frame 6 and the pump pipe fixing frame 5 are removed, the full-section pump pipes 52 are used to grout the joints between the beam body 3 and the poured concrete.

[0069] The full-section pump pipe 52 is used to grout the joint position after the joint is completed, increase the density of the concrete at the joint to ensure the structural force, compact the joint, and ensure the density of the concrete of the joint structure. At least two full-section pump pipes 52 are set at the wall, and a proper amount of full-section pump pipes 52 can be added at the wider part of the column to ensure that the slurry can fill the joint during grouting.

[0070] The full-section grouting method is one of the existing concrete pouring methods and will not be described in detail here.

[0071] Please see attached Figure 6 In the step 3.1, a first pump pipe hole 53 is reserved on the zero-floor slab 12 and the underground first floor slab 14 at the position corresponding to the penetration position of the concrete pump pipe 51, and the floor slab steel bars 16 are bent to avoid the first pump pipe hole 53 during the binding construction; the concrete pump pipe 51 passes through the zero-floor slab 12 and the underground first floor slab 14 through the first pump pipe hole 53, and the concrete pump pipe 51 is fixed in the first pump pipe hole 53 by a wedge block.

[0072] The reservation of the first pump pipe hole 53 should be deepened before the reverse construction structure is constructed to reduce the damage to the floor structure caused by opening holes in the later stage. The reservation of the first pump pipe hole 53 meets the layout requirements of the concrete pump pipe 51 and facilitates the concrete pouring construction during the docking process.

[0073] Please see attached Figure 7 In the step 3.1, a second pump pipe hole 54 is reserved on the beam body 3 at the position corresponding to the penetration position of the concrete pump pipe 51. The beam body reinforcement 31 is cut off during the binding construction to avoid the second pump pipe hole 54, and a plurality of reinforcing ribs 55 are arranged around the second pump pipe hole 54. The plurality of reinforcing ribs 55 overlap the beam body reinforcement 31; the concrete pump pipe 51 passes through the beam body 3 through the second pump pipe hole 54, and the concrete pump pipe 51 is fixed in the second pump pipe hole 54 by a wedge block.

[0074] The reservation of the second pump pipe hole 54 should be deepened before the reverse construction structure is constructed to reduce the damage to the beam body 3 caused by opening holes in the later stage. The reservation of the second pump pipe hole 54 meets the layout requirements of the concrete pump pipe 51 and facilitates the concrete pouring construction during the docking process. The position of the second pump pipe hole 54 is strengthened by a plurality of reinforcing ribs 55 to ensure the force of the beam body 3.

[0075] Please see attached Figure 5The concrete pump pipe 51 is arranged horizontally and vertically, and the horizontally arranged concrete pump pipe 51 is vertically connected to the longitudinally arranged concrete pump pipe 51 through a 90° connection point 56.

[0076] The concrete pump pipe 51 can be a hose to ensure convenient construction operation, and the concrete pump pipe 51 can be lengthened and disassembled in time with the progress of concrete pouring. When laying the concrete pump pipe 51, the principle is to reserve fewer holes and fewer turning points. The pouring requirements of the docking part should be met while reducing the number of turns of the concrete pump pipe 51. The 90° connection point 56 can be adjusted according to the actual pouring situation to facilitate on-site operation.

[0077] According to the deviation situation, the present invention conducts in-depth design of the butt joint steel bars and concrete structure of the vertical structure at the butt joint layer to ensure the use function of the structure and the effective transfer of loads, designs the casting plan of the butt joint layer in advance and makes corresponding reservations and embeddings, combines the advantages of the super-pouring method and the grouting method, butt joints the vertical structure of the butt joint node, uses the super-pouring method to ensure the molding quality of the butt joint vertical structure, and then uses secondary grouting to strengthen the butt joint, avoids the quality defects of the over-pouring butt joint, and meets the structural requirements.

[0078] The above are only preferred embodiments of the present invention and are not intended to limit the scope of protection of the invention. Therefore, any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A method for butt jointing a vertical structure of a reverse construction structure, characterized by: The following steps are involved: Step 1: Before the construction of the underground structure, a vertical line is drawn downward from the reverse-constructed zero-layer structure, and the coordinates of the foundation bottom plate are re-positioned according to the already formed zero-layer structure; Step 2: When a small amount of horizontal deviation occurs during the butt joint of the vertical structure, tie the steel bars at the butt joint; At the joint node of the offset wall: the upper and lower offset wall reinforcements (11) in the offset wall are bent and then butt-jointed, and the offset increases the thickness of the wall; At the butt joint of the offset column: a third embedded reinforcement (21) is arranged between the offset part of the column of the zero-floor slab (12) and the column (2), and the column reinforcement (22) in the column (2) is bent and butt jointed; Step 3: supporting a formwork system (7) at the joint node, and providing a bell mouth (4) at the joint between the formwork system (7) and the beam body (3), and pouring concrete at the joint through the bell mouth (4); In the step 2, at the joint node of the offset wall, the offset wall reinforcement (11) is bent at the joint end so that it can be butt-jointed with the non-offset wall reinforcement (11); In the step 2, at the docking node of the offset wall, a first embedded bar (13) is preset within the offset width of the wall below the zero-floor slab (12), so that the lower end of the first embedded bar (13) is docked with the wall reinforcement (11) located below; at the same time, a second embedded bar (15) is preset within the offset width of the wall above the underground first floor slab (14), so that the upper end of the second embedded bar (15) is docked with the wall reinforcement (11) located above.

2. The vertical structure docking method of the reverse construction structure according to claim 1 is characterized by: In the step 2, at the docking node of the offset column, the column reinforcement (22) is tilted along the offset direction, and a tie bar (23) is arranged in the column (2). The end of the column reinforcement (22) is bent and docked with one end of the tie bar (23), and the other end of the tie bar (23) is vertically connected to the third embedded bar (21), so that the offset side of the docking part of the column (2) is an inclined structure, forming a corbel column structure (24).

3. The vertical structure docking method of the reverse construction structure according to claim 2 is characterized in that: The joint nodes of the offset column are provided with denser stirrups (25), and the arrangement spacing of the denser stirrups (25) is smaller than the arrangement spacing of the original stirrups in the column (2).

4. The vertical structure docking method of the reverse construction structure according to claim 1 is characterized by: The step 3 comprises the following sub-steps: Step 3.1: erecting a pump pipe fixing frame (5) beside the formwork system (7) at the joint position, and laying a concrete pump pipe (51) on the pump pipe fixing frame (5) so that the concrete pump pipe (51) is located below the bell mouth (4); Step 3.2: The bell mouth (4) is tiltedly arranged on the pump pipe fixing frame (5) through the diagonal brace (41); when the columns are butt-jointed, a bell mouth (4) is individually arranged on the formwork system (7) of each column; when the walls are butt-jointed, a plurality of bell mouths (4) are arranged at intervals on the formwork system (7) of the wall along the length direction of the wall; Step 3.3: Setting up a construction operation frame (6) beside the pump pipe fixing frame (5), and connecting the construction operation frame (6) and the pump pipe fixing frame (5) into an integrated structure; Step 3.4: Use the overfilling method to pour concrete into the joint part through the concrete pump pipe (51).

5. The vertical structure docking method of the reverse construction structure according to claim 4 is characterized by: In the step 3, before pouring concrete, a plurality of full-section pump pipes (52) are pre-buried at intervals at the bottom of the beam body (3), and after the formwork system (7), the construction operation frame (6) and the pump pipe fixing frame (5) are removed, grouting is performed at the joint between the beam body (3) and the poured concrete through the full-section pump pipes (52).

6. The method for connecting the vertical structure of the reverse construction structure according to claim 4 is characterized in that: In the step 3.1, a first pump pipe hole (53) is reserved on the ground floor slab (12) and the underground first floor slab (14) at positions corresponding to the penetration positions of the concrete pump pipe (51), and the slab reinforcement (16) is bent to avoid the first pump pipe hole (53) during the binding construction; the concrete pump pipe (51) passes through the ground floor slab (12) and the underground first floor slab (14) through the first pump pipe hole (53), and the concrete pump pipe (51) is fixed in the first pump pipe hole (53) by means of a wedge-shaped block.

7. The method for connecting the vertical structure of the reverse construction structure according to claim 4 is characterized in that: In the step 3.1, a second pump pipe hole (54) is reserved on the beam body (3) at a position corresponding to the penetration position of the concrete pump pipe (51); during the binding construction of the beam body steel bars (31), the second pump pipe hole (54) is cut off; and a plurality of reinforcing bars (55) are arranged around the second pump pipe hole (54); the plurality of reinforcing bars (55) overlap the beam body steel bars (31); the concrete pump pipe (51) passes through the beam body (3) through the second pump pipe hole (54); and the concrete pump pipe (51) is fixed in the second pump pipe hole (54) by a wedge-shaped block.

8. The vertical structure docking method of the reverse construction structure according to claim 4 is characterized by: The concrete pump pipe (51) is arranged transversely and longitudinally, and the transversely arranged concrete pump pipe (51) is vertically connected with the longitudinally arranged concrete pump pipe (51) via a 90° connection point (56).

Images