Construction method of a rear interlayer pipe zone anti-leakage structure

Abstract

The application discloses a construction method of a post-interlayer pipeline area anti-seepage structure, and first builds a structure containing a first built super limit beam and first built shear walls; the first built super limit beam and the first built shear walls are located on two adjacent and perpendicular sides; a pipeline is led out from one side of the first built shear wall; the first built super limit beam and the first built shear walls are used for providing anchor planting for the interlayer, the first built super limit beam also serves as a side mold of the interlayer, the first built shear walls and the first built column body are used for lapping and fixing the interlayer side beam mold assembly, and the setting and overall stress of the mold are greatly facilitated; the interlayer side beam and the interlayer through beam are beneficial to guaranteeing uniform stress of the interlayer and finally transmitting the stress to the first built column body; the first built masonry wall is beneficial to mold supporting, positioning and later pouring; and the interlayer bottom mold and the support frame are further used for guaranteeing the setting of the interlayer mold and facilitating the construction.

Description

Technical Field

[0001] This invention relates to the field of post-installed interlayer technology, and in particular to a construction method for a post-installed interlayer pipe area anti-leakage structure. Background Technology

[0002] In building construction, waterproofing layers are typically installed in frequently used water areas such as bathrooms and swimming pools. A suspended ceiling is usually installed at the top where pipes are located to seal and conceal them. For ceiling-mounted waterproofing layers, this is generally implemented from the initial design stage, constructed sequentially with existing columns and beams, and the upper floor slab. However, due to changes in room functionality, if a mezzanine is subsequently added to a room that was not originally designed with one, specific solutions are needed regarding the distribution of beams and slabs, the installation of formwork, and the utilization of existing building structures. Summary of the Invention

[0003] This invention provides a construction method for a post-installed interlayer pipe zone anti-seepage structure, which solves technical problems such as the distribution and arrangement of beams and slabs in the post-installed anti-seepage interlayer, how to set up formwork, and the use of pre-built structures.

[0004] To achieve the above objectives, the present invention adopts the following technical solution: A construction method for a post-installed interlayer pipe area anti-seepage structure, wherein the interlayer structure is constructed first, including a pre-constructed over-limit beam and the outer formwork of the edge beam and the pre-constructed shear wall; the over-limit beam is constructed first, and the outer formwork of the edge beam and the pre-constructed shear wall are located on adjacent, mutually perpendicular sides; the pipes exit from one side of the pre-constructed shear wall. The specific steps are as follows: Step 1: First, construct the structure and pipelines. Based on the location of the existing pipelines and the seepage prevention design, determine the location of the floor slabs and beams for the mezzanine. Step 2: Combining CAD detailed drawings and / or BIM drawings, scan the pre-constructed over-limit beams on site to determine the position of the outer formwork of the edge beams and the internal reinforcement of the pre-constructed shear walls, and determine the installation position of the rebar according to the design of the mezzanine beams; wherein, the mezzanine beams include the mezzanine edge beams located between the pre-constructed shear walls, and also include the mezzanine through beams located between the pre-constructed columns. Step 3: Install rebar perpendicular to the previously constructed over-limit beam and along the longitudinal direction of the outer formwork of the edge beam and the previously constructed shear wall, and use the rebar as anchor bars for the floor slab. Step 4: Construct the masonry walls between adjacent pre-constructed shear walls and between adjacent pre-constructed columns. Stop construction when the pre-constructed masonry walls reach the bottom elevation of the beams in the designed mezzanine. Step 5: Install the support frame and the corresponding mezzanine bottom formwork and side formwork, and install the mezzanine side beam formwork assembly on the pre-constructed masonry wall; the height of the pre-constructed oversized beam is greater than the height between the mezzanine floor slab and the pre-constructed floor slab, and the oversized beam is used as the mezzanine side formwork during formwork installation; the two ends of the mezzanine side beam formwork assembly are overlapped on the pre-constructed shear wall or pre-constructed column, and the bottom is connected by tie bolts; Step 6: After the template is installed, the inner reinforcement of the slab is tied, and then the interlayer is poured in an integrated manner with impermeable concrete to form an impermeable interlayer. After the interlayer is cured, a hole sealing wall is built at the pipe penetration point to seal the pipe hole between the interlayer and the first floor slab. This completes the overall construction of the impermeable structure in the pipe area with interlayer.

[0005] Furthermore, the pre-construction structure includes pre-constructed columns, pre-constructed beams connected to the upper part of the pre-constructed columns, pre-constructed floor slabs set between the pre-constructed beams, and pre-constructed shear walls set on the sides of the pre-constructed columns; among them, the pre-constructed beams on the side perpendicularly connected to the pre-constructed shear walls are pre-constructed over-limit beams. The pre-constructed shear walls are respectively set inside the adjacent pre-constructed columns, and a pre-constructed masonry wall is set between the adjacent pre-constructed shear walls.

[0006] Furthermore, the mezzanine floor slab is located on the line connecting the mezzanine outline away from the top of the pre-constructed column and between the mezzanine side beam and the mezzanine through beam on the side opposite to the pre-constructed over-limit beam; the formwork on the side of the mezzanine floor slab on this side is laterally supported by the support frame.

[0007] Furthermore, after constructing the over-limit beam and determining the positions of the outer formwork of the edge beam and the internal reinforcement of the shear wall, roughen the surface and drill holes, clean the ducts until there is no floating dust or water stains on the inner wall of the hole. Before planting the reinforcement, remove the rust from the original reinforcement, and the length of rust removal should be greater than the length of the reinforcement to be planted. Rotate the treated reinforcement and slowly insert it into the duct so that the reinforcement adhesive is evenly adhered to the surface of the reinforcement and the thread gaps. The clear distance between the rebar and the original internal rebar at the lap joint shall be ≥2d and ≥20mm and ≤4d; if the clear distance is >4d, the lap length shall be increased by 2d, but the clear distance shall be ≤6d; where d is the engineering diameter of the rebar.

[0008] Furthermore, the slab reinforcement includes tie bars that connect the pre-constructed over-limit beams to the outer formwork of the edge beams and the pre-constructed shear walls, as well as tie bars that connect the mezzanine edge beams and mezzanine through beams to the beam reinforcement; the tie bars are set as structural reinforcement within the mezzanine slab.

[0009] Furthermore, the support frame includes support uprights spaced apart and evenly distributed at the bottom of the mezzanine, support horizontal bars vertically connected to the support uprights, support top supports adjustablely set at the top of the support horizontal bars, and support pads connecting the support top supports and the bottom template of the mezzanine; wherein the support pads are spaced apart corresponding to the bottom template of the mezzanine.

[0010] Furthermore, the mezzanine edge beam formwork assembly includes an inner edge beam formwork set inside the mezzanine edge beam, an outer edge beam formwork set outside the mezzanine edge beam, edge beam formwork timbers set on the inner and outer edge beam formworks respectively, edge beam formwork back ribs set outside the edge beam formwork timbers, and edge beam formwork tie bolts connecting the inner and outer edge beam formworks.

[0011] Furthermore, the two ends of the outer formwork of the edge beam overlap the pre-constructed shear wall or column, and the top of the outer formwork of the edge beam on both sides of the mezzanine is flush with the top surface of the mezzanine to be poured; at least one tie bolt is installed on the outer formwork of the edge beam and is set close to the bottom of the mezzanine; during construction, the tie bolts of the edge beam formwork are used to tie and connect the outer formwork of the edge beam to the pre-constructed shear wall or column, thereby enclosing and fixing the outer formwork of the edge beam.

[0012] Furthermore, the outer formwork and inner formwork of the side beams on the mezzanine beams inside the mezzanine floor slab are set at the same height and located below the mezzanine. At this time, at least one tie bolt is installed and located in the middle of the mezzanine beam. During construction, the outer formwork of the side beam is fixed by connecting the tie bolts of the side beam formwork and the overlapping of the pre-built columns.

[0013] Furthermore, a sleeve is installed on the outside of the pipe, and the sleeve is connected to the sealing wall of the surrounding opening by mortar filling; the pipe is also installed on a U-shaped stretcher, and the U-shaped stretcher is connected to the corresponding top plate above.

[0014] The beneficial effects of this invention are reflected in: This invention utilizes pre-constructed super-limit beams, with the outer formwork of the edge beams and pre-constructed shear walls providing rebar anchorage for the mezzanine. The pre-constructed super-limit beams also serve as the side formwork of the mezzanine, while the pre-constructed shear walls and columns are used to overlap and fix the mezzanine edge beam formwork assembly. This greatly simplifies formwork setup and overall stress distribution. The arrangement of the mezzanine edge beams and mezzanine through beams ensures uniform stress distribution within the mezzanine, and the placement of the internal reinforcement in the slabs ensures that the final stress is transferred to the pre-constructed columns. The pre-constructed masonry walls further facilitate the formwork support, positioning, and subsequent pouring of the mezzanine edge beams and through beams. Combined with the mezzanine bottom formwork and support frame, the mezzanine formwork setup is further guaranteed, facilitating convenient construction. Therefore, this application solves the technical problems of beam and slab distribution in the subsequently installed seepage-proof mezzanine, formwork setup, and the utilization of pre-constructed structures. Other features and advantages of the invention will be set forth in the description which follows, and will be apparent in part from the description, or may be learned by practicing the invention; the main objects and other advantages of the invention may be realized and obtained by means of the embodiments particularly pointed out in the description. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the construction and installation of the anti-seepage structure for the post-installed interlayer pipe area; Figure 2 This is a partial schematic diagram of the construction and installation of the anti-seepage structure in the post-installed interlayer pipe area; Figure 3 This is a schematic diagram of the installation of the formwork assembly for the mezzanine side beam at the shear wall location; Figure 4 This is a schematic diagram showing the completed construction of the mezzanine edge beam formwork assembly; Figure 5 This is a schematic diagram showing the location of the mezzanine and the arrangement of some internal reinforcement bars in the slab.

[0016] Attached reference numerals: 1-Build floor slab first, 2-Build beam first, 3-Build masonry wall first, 4-Support frame, 41-Support upright, 42-Support horizontal bar, 43-Support top support, 44-Support pad, 5-Mezzanine bottom formwork, 6-Mezzanine side beam formwork assembly, 61-Side beam inner formwork, 62-Side beam outer formwork, 63-Side beam formwork timber, 64-Side beam formwork back rib, 65-Side beam formwork tie bolt, 7-Mezzanine floor slab, 8-Mezzanine side beam, 9-Pipe, 10-Sleeve, 11-Build shear wall first, 12-Pipe opening, 13-Opening sealing wall, 14-Build column first, 15-Build oversized beam first, 16-Mezzanine through beam, 17-Slab internal reinforcement, 18-Mezzanine outline. Detailed Implementation

[0017] The technical solutions of the present invention will be described in detail below through embodiments. The following embodiments are merely exemplary and can only be used to explain and illustrate the technical solutions of the present invention, and should not be construed as limiting the technical solutions of the present invention.

[0018] Taking a hospital project as an example, after the pipeline construction is completed, a mezzanine is needed to prevent pipeline leakage due to the functional requirements of the room below the pipeline. The mezzanine structure includes a pre-constructed over-limit beam 15, with the outer formwork 62 of the edge beam and the pre-constructed shear wall 11; the over-limit beam 15 is pre-constructed, with the outer formwork 62 of the edge beam and the pre-constructed shear wall 11 located on adjacent, mutually perpendicular sides; the pipeline 9 exits from one side of the pre-constructed shear wall 11; combined with... Figures 1 to 5 As shown, the construction method of the anti-leakage structure in the subsequent interlayer pipe area is further explained. The specific steps are as follows: Step 1: First, construct the structure and pipeline 9. Based on the location of the existing pipeline 9 and the seepage prevention design, determine the location of the floor slab and beams of the mezzanine.

[0019] In this embodiment, the pre-constructed structure includes pre-constructed columns 14, pre-constructed beams 2 connected to the upper part of the pre-constructed columns 14, pre-constructed floor slabs 1 set between the pre-constructed beams 2, and pre-constructed shear walls 11 set on the side of the pre-constructed columns 14; wherein, the pre-constructed beam on the side perpendicularly connected to the pre-constructed shear walls 11 is a pre-constructed over-limit beam 15; the pre-constructed shear walls 11 are respectively set on the inner side of adjacent pre-constructed columns 14, and pre-constructed masonry walls 3 are set between adjacent pre-constructed shear walls 11.

[0020] Step 2: Combining CAD detailed drawings and / or BIM drawings, scan the pre-constructed over-limit beam 15 on-site to determine the position of the outer formwork 62 of the edge beam and the internal reinforcement of the pre-constructed shear wall 11, and determine the installation position of the rebar according to the design of the mezzanine beam; wherein, the mezzanine beam includes the mezzanine edge beam 8 located between the pre-constructed shear walls 11, and also includes the mezzanine through beam 16 located between the pre-constructed columns 14.

[0021] Step 3: Install rebar perpendicular to the pre-constructed over-limit beam 15 and along the longitudinal direction of the outer formwork 62 of the edge beam and the pre-constructed shear wall 11, and use the rebar as anchor bars for the floor slab.

[0022] In this embodiment, after constructing the oversized beam 15 and determining the positions of the outer formwork 62 of the edge beam and the internal reinforcement of the shear wall 11, drilling should not damage the original beam, column, and wall reinforcement. The holes are then roughened and cleaned with a blower and brush until the inner wall is free of dust and water stains. The reinforcement must be straight, and the original reinforcement must be derusted before installation, with the derusted length exceeding the installation length. Adhesive is injected using an adhesive applicator, which is slowly withdrawn while injecting. The treated reinforcement is then slowly inserted into the hole, rotating to ensure the adhesive adheres evenly to the surface and threaded gaps. Once the reinforcement / anchor is inserted, it should not be disturbed. Welding, binding, and other work can only proceed after the adhesive has cured. The adhesive used is a modified epoxy or modified vinyl ester adhesive. The clear distance between the rebar and the existing rebar at the lap joint should be ≥2d and ≥20mm and ≤4d; if the clear distance is >4d, the lap length should be increased by 2d, but the clear distance should be ≤6d.

[0023] Step 4: Construct the pre-constructed masonry walls 3 between adjacent pre-constructed shear walls 11 and adjacent pre-constructed columns 14. Stop construction when the pre-constructed masonry walls 3 reach the bottom elevation of the beam in the designed mezzanine.

[0024] Step 5: Install the support frame 4 and the corresponding mezzanine bottom formwork 5 and side formwork, and install the mezzanine side beam formwork assembly 6 on the pre-constructed masonry wall 3; the height of the pre-constructed over-limit beam 15 is greater than the height between the mezzanine floor slab 7 and the pre-constructed floor slab 1, and the pre-constructed over-limit beam 15 is used as the mezzanine side formwork during formwork installation; the mezzanine side beam formwork assembly 6 is attached to the pre-constructed shear wall 11 or the pre-constructed column 14 at both ends, and the bottom is connected by tie bolts.

[0025] The mezzanine floor slab 7 is located on the mezzanine outline 18 on the side opposite to the pre-constructed super-limit beam 15, away from the top of the pre-constructed column 14 and on the line connecting the mezzanine side beam 8 and the mezzanine through beam 16; the formwork on the side of the mezzanine floor slab 7 is laterally supported by the support frame 4.

[0026] The support frame 4 includes support uprights 41 spaced apart and evenly distributed at the bottom of the mezzanine, support horizontal bars 42 vertically connected to the support uprights 41, support top supports 43 adjustablely disposed on the top of the support horizontal bars 42, and support pads 44 connecting the support top supports 43 and the bottom template 5 of the mezzanine. Among them, the support pads 44 are spaced apart corresponding to the bottom template 5 of the mezzanine.

[0027] In this embodiment, the mezzanine side beam formwork assembly 6 includes an inner side beam formwork 61 disposed inside the mezzanine side beam 8, an outer side beam formwork 62 disposed outside the mezzanine side beam 8, side beam formwork timber 63 disposed on the inner side beam formwork 61 and the outer side beam formwork 62 respectively, a side beam formwork back rib 64 disposed outside the side beam formwork timber 63, and side beam formwork tie bolts 65 connecting the inner side beam formwork 61 and the outer side beam formwork 62.

[0028] In this embodiment, the two ends of the outer formwork 62 of the side beam overlap the pre-constructed shear wall 11 or the pre-constructed column 14. The top of the outer formwork 62 of the side beam on both sides of the mezzanine is flush with the top surface of the mezzanine to be poured. At least one tie bolt is installed on the outer formwork 62 of the side beam and is set close to the bottom of the mezzanine. During construction, the tie bolts 65 of the side beam formwork are used to tie and make the outer formwork 62 of the side beam overlap with the pre-constructed shear wall 11 or the pre-constructed column 14, thereby enclosing and fixing the outer formwork 62 of the side beam.

[0029] In this embodiment, the outer formwork 62 and the inner formwork 61 of the side beam are set at the same height and located below the mezzanine on the mezzanine through beam 16 inside the mezzanine floor slab 7. At this time, at least one tie bolt is set and located in the middle of the mezzanine through beam 16. During construction, the outer formwork 62 of the side beam is fixed by connecting the tie bolt 65 of the side beam formwork and the overlapping of the first column 14.

[0030] Among them, the bottom formwork 5 of the mezzanine corresponds to the elevation, slope and style of the bottom surface of the mezzanine, and its end is sealed and connected to the inner formwork 61 of the side beam.

[0031] Step 6: After the template is installed, the inner reinforcement 17 of the slab is tied, and then the interlayer is poured in an integrated manner with anti-seepage concrete to form an anti-seepage interlayer. After the interlayer is cured, the opening sealing wall 13 is built at the pipe 9 exit point to seal the pipe opening 12 between the interlayer and the first floor slab 1. This completes the overall construction of the anti-seepage structure of the interlayer pipe 9 area.

[0032] In this embodiment, the slab reinforcement 17 includes tie bars that are connected to the anchor bars at the pre-constructed over-limit beam 15 and the outer formwork 62 of the edge beam and the pre-constructed shear wall 11, and tie bars that are connected to the beam reinforcement between the mezzanine edge beam 8 and the mezzanine through beam 16; the tie bars are set as structural reinforcement in the mezzanine floor slab 7.

[0033] In addition, a sleeve 10 is installed on the outside of the pipe 9, and the sleeve 10 is connected to the surrounding opening sealing wall 13 by mortar filling; the pipe 9 is also installed on a U-shaped stretcher, and the U-shaped stretcher is connected to the corresponding upper top plate.

[0034] The above description is only a preferred embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any changes or substitutions that can be conceived by those skilled in the art within the scope of the technology disclosed in the present invention should be included within the scope of protection of the present invention.

Claims

1. A construction method for a post-installed interlayer pipe zone anti-leakage structure, characterized in that, The mezzanine structure includes a pre-constructed over-limit beam (15) and the outer formwork of the edge beam (62) and the pre-constructed shear wall (11); the pre-constructed over-limit beam (15) and the outer formwork of the edge beam (62) and the pre-constructed shear wall (11) are located on adjacent, mutually perpendicular sides; the pipe (9) exits on one side of the pre-constructed shear wall (11); The specific steps are as follows: Step 1: First, construct the structure and pipeline (9). Based on the location of the constructed pipeline (9) and the seepage prevention design, determine the location of the floor slab and beams of the mezzanine. Step 2: Combine the CAD detailed drawings and / or BIM drawings, scan the pre-constructed over-limit beam (15) on site to determine the position of the outer formwork (62) of the edge beam and the internal reinforcement of the pre-constructed shear wall (11), and determine the installation position of the rebar according to the design of the mezzanine beam; wherein, the mezzanine beam includes the mezzanine edge beam (8) located between the pre-constructed shear walls (11), and also includes the mezzanine through beam (16) located between the pre-constructed columns (14); Step 3: Install rebar perpendicular to the pre-built over-limit beam (15) and along the longitudinal direction of the outer formwork (62) of the edge beam and the pre-built shear wall (11), and use the rebar as anchor bars for the floor slab; Step 4: Construct the masonry walls (3) between adjacent pre-constructed shear walls (11) and between adjacent pre-constructed columns (14). Stop construction when the masonry walls (3) are constructed to the bottom elevation of the beam in the designed mezzanine. Step 5: Install the support frame (4) and the corresponding mezzanine bottom formwork (5) and side formwork, and install the mezzanine side beam formwork assembly (6) on the pre-built masonry wall (3); the height of the pre-built over-limit beam (15) is greater than the height between the mezzanine floor slab (7) and the pre-built floor slab (1), and the pre-built over-limit beam (15) is used as the mezzanine side formwork during formwork installation; the two ends of the mezzanine side beam formwork assembly (6) are overlapped on the pre-built shear wall (11) or the pre-built column (14), and the bottom is connected by tie bolts; Step 6: After the template is installed, the inner reinforcement (17) of the slab is tied, and then the interlayer is poured in an integrated manner with anti-seepage concrete to form an anti-seepage interlayer. After the interlayer is cured, a hole sealing wall (13) is built at the pipe (9) exit point to seal the pipe hole (12) between the interlayer and the first floor slab (1). This completes the overall construction of the anti-seepage structure in the interlayer pipe (9) area.

2. The construction method of the post-installed interlayer pipe zone anti-leakage structure as described in claim 1, characterized in that, The pre-construction structure includes pre-constructed columns (14), pre-constructed beams (2) connected to the upper part of the pre-constructed columns (14), pre-constructed floor slabs (1) set between the pre-constructed beams (2), and pre-constructed shear walls (11) set on the side of the pre-constructed columns (14); wherein, the pre-constructed beam on the side perpendicularly connected to the pre-constructed shear walls (11) is a pre-constructed over-limit beam (15). The pre-built shear walls (11) are respectively set inside the adjacent pre-built columns (14), and the pre-built masonry walls (3) are set between the adjacent pre-built shear walls (11).

3. The construction method of the post-installed interlayer pipe zone anti-leakage structure as described in claim 1, characterized in that, The mezzanine floor slab (7) is located on the mezzanine outline (18) on the side opposite to the pre-built super-limit beam (15), away from the top of the pre-built column (14) and on the line connecting the mezzanine side beam (8) and the mezzanine through beam (16); the formwork on the side of the mezzanine floor slab (7) is laterally supported by the support frame (4).

4. The construction method of the post-installed interlayer pipe zone anti-leakage structure as described in claim 1, characterized in that, After the super-limit beam (15) is built first and the positions of the outer formwork (62) of the side beam and the internal reinforcement of the shear wall (11) are determined, the surface is roughened and the holes are drilled. The holes are cleaned until there is no floating dust or water stains on the inner wall of the hole. Before planting the reinforcement, the original reinforcement is derusted and the length of derusting is greater than the length of planting. The treated reinforcement is slowly inserted into the hole by rotating, so that the reinforcement adhesive is evenly attached to the surface of the reinforcement and the thread gap. The clear distance between the rebar and the original internal rebar at the lap joint shall be ≥2d and ≥20mm and ≤4d; if the clear distance is >4d, the lap length shall be increased by 2d, but the clear distance shall be ≤6d; where d is the engineering diameter of the rebar.

5. The construction method of a post-installed interlayer pipe zone anti-leakage structure as described in claim 1, characterized in that, The slab reinforcement (17) includes the tie bars in the pre-constructed over-limit beam (15) and connects with the anchor bars at the outer formwork (62) of the edge beam and the pre-constructed shear wall (11), and the tie bars between the mezzanine edge beam (8) and the mezzanine through beam (16) are connected with the beam reinforcement; the tie bars are set as structural reinforcement in the mezzanine floor slab (7).

6. The construction method of a post-installed interlayer pipe zone anti-leakage structure as described in claim 1, characterized in that, The support frame (4) includes support uprights (41) spaced apart and evenly distributed at the bottom of the mezzanine, support horizontal bars (42) vertically connected to the support uprights (41), support top supports (43) adjustablely set on the top of the support horizontal bars (42), and support pads (44) connecting the support top supports (43) and the mezzanine bottom template (5). Among them, the support pads (44) are spaced apart corresponding to the mezzanine bottom template (5).

7. The construction method of a post-installed interlayer pipe zone anti-leakage structure as described in claim 1, characterized in that, The mezzanine side beam formwork assembly (6) includes an inner side beam formwork (61) set inside the mezzanine side beam (8), an outer side beam formwork (62) set outside the mezzanine side beam (8), side beam formwork timber (63) set on the inner side beam formwork (61) and the outer side beam formwork (62) respectively, a side beam formwork back rib (64) set outside the side beam formwork timber (63), and side beam formwork tie bolts (65) connecting the inner side beam formwork (61) and the outer side beam formwork (62).

8. The construction method of a post-installed interlayer pipe zone anti-leakage structure as described in claim 7, characterized in that, The two ends of the outer formwork of the side beam (62) are overlapped on the pre-built shear wall (11) or the pre-built column (14). The top of the outer formwork of the side beam (62) set on both sides of the mezzanine is flush with the top surface of the mezzanine to be poured. The outer formwork of the side beam (62) installed on the outer formwork of the side beam (62) has at least one tie bolt and is set close to the bottom of the mezzanine. During construction, the tie bolts (65) of the outer formwork of the side beam are used to tie and make the outer formwork of the side beam (62) overlap with the pre-built shear wall (11) or the pre-built column (14), thereby enclosing and fixing the outer formwork of the side beam (62).

9. The construction method of a post-installed interlayer pipe zone anti-leakage structure as described in claim 7, characterized in that, The outer formwork (62) and inner formwork (61) of the side beam on the mezzanine beam (16) inside the mezzanine floor slab (7) are set at the same height and located below the mezzanine. At this time, at least one tie bolt is set and located in the middle of the mezzanine beam (16). During construction, the outer formwork of the side beam is fixed by connecting the tie bolts (65) of the side beam formwork and the overlapping of the pre-built column (14).

10. The construction method of a post-installed interlayer pipe zone anti-leakage structure as described in claim 1, characterized in that, A sleeve (10) is installed on the outside of the pipe (9), and the sleeve (10) is connected to the surrounding opening sealing wall (13) by mortar filling; the pipe (9) is also installed on a U-shaped stretcher, and the U-shaped stretcher is connected to the corresponding upper top plate.

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