A super-thick raft post-cast strip shear wall dam interception device and its construction method

Abstract

The present invention relates to the technical field of building construction, and discloses a super-thick raft post-cast strip shear wall dam interception device and its construction method. Among them, a super-thick raft post-cast strip shear wall dam interception device includes a raft main body and a first waterproof layer laid on the raft main body. A brick formwork is vertically arranged on the first waterproof layer, and the brick formwork is located inside the raft main body. A shear wall body is fixedly connected between the outer side wall of the raft main body and the outer side wall of the brick formwork; a cavity is opened at the bottom of the brick formwork, and an internal corner reinforcement is arranged in the cavity of the brick formwork. For this super-thick raft post-cast strip shear wall dam interception device, the internal corner reinforcement provides an additional protective layer for the lapped position of the first waterproof layer. It can cover and protect the lapped part, reduce physical damage during construction, and ensure the sealing performance of the joint, prevent water from penetrating through the construction joint or the post-cast strip position, and improve the water interception project quality in the offshore wind farm.

Description

Technical Field

[0001] The present invention relates to the technical field of building construction, and particularly relates to an interception device for a post-cast strip shear wall dam of a super-thick raft and a construction method thereof. Background Art

[0002] In an offshore wind farm, the application of a super-thick raft provides a stable support foundation for the wind turbine tower, preventing tilting or sinking caused by changes in seabed geology; the post-cast strip is a temporary construction joint reserved during the construction process. By pouring at an appropriate time, the early shrinkage stress of the concrete is released, enhancing the integrity of the structure; the shear wall dam structure is arranged perpendicular to the super-thick raft and is mainly used to resist the huge lateral force generated by strong winds or waves on the wind turbine tower, transfer the lateral force to the super-thick raft, and then disperse it to the foundation by the super-thick raft, thereby ensuring the safety and stability of the wind farm facilities under complex stress conditions.

[0003] Since the buried depth of the underground structure of the building is relatively deep and it is immersed in seawater or groundwater all year round, leakage problems are likely to occur. Among them, the high-frequency leakage positions at the bottom of the underground structure are mostly the extended parts of the raft foundation and the waterproof parts of the shear wall dam. During the traditional waterproof construction of the extended part of the raft foundation and the shear wall dam, the foundation waterproof coiled material is usually lapped on the top surface of the brick formwork of the raft foundation, and there is no special treatment at the structural internal corner position. During the subsequent construction process, the lapped waterproof coiled material is easily disturbed and damaged by construction operations such as the erection of floor-standing scaffolds, the installation of external wall steel bars, and the installation of formwork. It is difficult to protect the lapping position of the waterproof coiled material, causing great trouble to the waterproof quality management, and thus leaving hidden dangers in the water interception project. Summary of the Invention

[0004] In view of the problems existing in the above-mentioned prior art, the present invention is proposed.

[0005] The present application provides an interception device for a post-cast strip shear wall dam of a super-thick raft, and its purpose is to solve the problem that it is difficult to protect the lapping position of the waterproof coiled material during the waterproof construction of the extended part of the traditional raft foundation and the shear wall dam part, thereby leaving hidden dangers in the water interception project.

[0006] The technical solution of the present invention is: an interception device for a post-cast strip shear wall dam of a super-thick raft, including a raft main body and a first waterproof layer laid on the raft main body. A brick formwork is vertically arranged on the first waterproof layer, and the brick formwork is located inside the raft main body. A shear wall body is fixedly connected between the outer side wall of the raft main body and the outer side wall of the brick formwork;

[0007] A cavity is formed at the bottom of the brick formwork, and a corner reinforcement member is arranged in the cavity of the brick formwork, and the corner reinforcement member is in contact with the top surface of the first waterproof layer.

[0008] Furthermore, a groove is formed on the top surface of the raft slab body, and the bottom surface of the first waterproof layer is fixedly connected to the top surface of the raft slab body;

[0009] The internal corner reinforcement member includes a T-shaped plate arranged on the inner top wall of the brick formwork. Fixed blocks are symmetrically arranged at the bottom of the T-shaped plate. The outer shape of the fixed block is adapted to the groove, and a water-swelling waterstop strip is arranged between the two fixed blocks.

[0010] Furthermore, an elastic plate is arranged between the water-swelling waterstop strip and the T-shaped plate. The elastic plate is integrally in a "W" shape, and both ends of the elastic plate are respectively inserted into the inner sides of the two fixed blocks.

[0011] Furthermore, the water-swelling waterstop strip is integrally in an anchor shape, and the top end of the water-swelling waterstop strip is inserted into the inner side of the elastic plate.

[0012] Furthermore, a second waterproof layer is laid on the brick formwork, and the top of the second waterproof layer is bent at a right angle and turned up and rolled on the side wall of the brick formwork. The shear wall body is integrally in a "convex" shape, and the top of the shear wall body is fixedly connected to the turned-up part of the second waterproof layer;

[0013] Both the first waterproof layer and the second waterproof layer are formed by bonding double-layer waterproof coiled materials.

[0014] Furthermore, a plurality of reserved holes are formed through the shear wall body. A concrete protective layer is fixedly connected to the outer side of the shear wall body. A plurality of connecting steel bars are horizontally arranged in the concrete protective layer, and one end of the connecting steel bar is inserted into the reserved hole.

[0015] Furthermore, the bottom of the second waterproof layer is bent and lapped on the first waterproof layer. A closing strip is arranged on the second waterproof layer, and a plurality of fasteners are arranged on the closing strip.

[0016] Furthermore, the fastener includes a bolt installed on the inner side of the closing strip. A threaded hole for installing the bolt is formed in the raft slab body. Through holes for the bolt to pass through are formed on both the first waterproof layer and the second waterproof layer. Two wedge-shaped washers are arranged between the bolt and the closing strip.

[0017] Furthermore, the wedge-shaped washer includes a gasket. Small teeth are formed on one side of the two gaskets away from each other. Large teeth are formed on one side of the two gaskets close to each other, and the two large teeth are meshed with each other;

[0018] The included angle α of the meshing of the large teeth is greater than the lead angle β of the bolt thread.

[0019] Furthermore, the present application also provides a construction method for an interception device of a post-cast strip shear wall of a super-thick raft slab, including the following steps:

[0020] S1: Ram the cushion layer of the raft slab main body and open a groove. After solidifying and forming, lay the first waterproof layer on its surface;

[0021] S2: Vertically build brick formwork on the first waterproof layer, and install corner reinforcement members in the cavity at the bottom of the brick formwork. Lay the second waterproof layer on the surface of the brick formwork, and the second waterproof layer overlaps with the first waterproof layer;

[0022] S3: Use a hand-held welding torch to heat-weld the overlapping edges of the first waterproof layer and the second waterproof layer, and fix them with a closing strip and fasteners;

[0023] S4: Construct the shear wall on the outer sidewall of the brick formwork, leave several reserved holes on the shear wall, and pour a concrete protective layer on the outer side of the shear wall after the formwork is supported;

[0024] S5: During the construction of the concrete protective layer, insert one end of the connecting steel bar into the reserved hole of the shear wall, and the overall concrete protective layer wraps the brick formwork and the shear wall;

[0025] S6: Apply a sealing strip at the joints of the brick formwork, the shear wall and the concrete protective layer to form an interception.

[0026] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0027] 1. In the present invention, the corner reinforcement member provides an additional protective layer for the lapped position of the first waterproof layer. Since the corner reinforcement member is located in the cavity of the brick formwork, it can cover and protect the lapped part, reduce physical damage during construction, and ensure the sealing of the joint, preventing water from penetrating through the construction joint or post-cast strip position, and improving the quality of the water interception project in the offshore wind farm.

[0028] 2. In the present invention, the elastic plate in the shape of "W" can, on the one hand, play a pre-tightening role for the water-swelling waterstop strip during installation, so that it can maintain a certain pressing state even when not encountering water, reducing gaps; on the other hand, during the expansion process of the water-swelling waterstop strip, the elastic plate can adapt to the expansion deformation of the water-swelling waterstop strip, provide a certain buffer space for it, and at the same time continuously give a certain reverse pressure to the water-swelling waterstop strip, ensuring that the water-swelling waterstop strip is closely attached to the surrounding components and enhancing the waterproof performance of the wind farm building.

[0029] 3. In the present invention, after the bolt completes the locking action, the small teeth on the outer side of the gasket will tightly embed into the surface of the closing strip or the bolt. At the same time, the large teeth on the inner side of the gasket are closely meshed with each other. Once the bolt shows signs of loosening and rotating due to vibration, since the angle α of the large teeth is larger than the lead angle β of the bolt, thus, the lift generated by the washer is greater than the lift generated by the bolt, which makes the washer further tighten the bolt, effectively avoiding bolt loosening. Description of the Drawings

[0030] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings required for the description of the embodiments or the prior art. Obviously, the drawings in the following description are only some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0031] Figure 1 Schematic diagram of the overall structure of the embodiment of the present invention;

[0032] Figure 2 Schematic diagram of the partial sectional structure of the embodiment of the present invention;

[0033] Figure 3 For the embodiment of the present invention Figure 2 Schematic diagram of the enlarged structure of part A in the embodiment;

[0034] Figure 4 Schematic diagram of the water-swelling waterstop strip of the embodiment of the present invention;

[0035] Figure 5 Schematic diagram of the overall structure of the embodiment of the present invention from another perspective;

[0036] Figure 6 Schematic diagram of the concrete protective layer of the embodiment of the present invention;

[0037] Figure 7 For the embodiment of the present invention Figure 2 Schematic diagram of the enlarged structure of part B in the embodiment;

[0038] Figure 8 Schematic diagram of the bolts and gaskets of the embodiment of the present invention.

[0039] The reference numerals in the figure respectively represent: 1, raft foundation main body; 2, first waterproof layer; 3, brick formwork; 4, shear wall; 41, reserved hole; 5, corner reinforcement; 51, T-shaped plate; 52, fixing block; 53, water-swelling waterstop strip; 54, elastic plate; 6, groove; 7, second waterproof layer; 8, concrete protective layer; 9, closing strip; 10, fastener; 101, bolt; 102, gasket; 103, small tooth; 104, large tooth. Detailed implementation manners

[0040] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. Apparently, the described embodiments are some, but not all, of the embodiments of the present invention. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention.

[0041] The present invention will be further described below with reference to the embodiments.

[0042] Example 1, referring to Figure 1 - Figure 6 , which is the first embodiment of the present invention, provides an ultra-thick raft post-cast strip shear wall dam interception device, including a raft main body 1, and a first waterproof layer 2 laid on the raft main body 1. A brick formwork 3 is vertically built on the first waterproof layer 2, and the brick formwork 3 is located inside the raft main body 1. A shear wall body 4 is fixedly connected between the outer side wall of the raft main body 1 and the outer side wall of the brick formwork 3.

[0043] In an offshore wind farm, due to the relatively deep buried depth of the underground structure of the building and being immersed in seawater or groundwater all year round, leakage problems are likely to occur. Among them, the high-frequency leakage positions at the bottom of the underground structure are mostly the extended parts of the raft main body 1 foundation and the waterproof parts of the shear wall body 4. When constructing the waterproofing of the extended parts of the traditional raft main body 1 foundation and the shear wall body 4, usually the first waterproof layer 2 is lapped on the top surface of the brick formwork 3, and there is no special treatment at the structural internal corner position. During the subsequent construction process, the lapped first waterproof layer 2 is easily disturbed and damaged by construction operations such as the erection of floor-standing scaffolds, the installation of external wall steel bars, and formwork installation. The protection of the lapped position of the first waterproof layer 2 (at the construction joint or post-cast strip position of the brick formwork 3 structure) is difficult, causing great trouble to the waterproof quality management, and thus leaving hidden dangers for the water interception project.

[0044] Referring to Figure 3 , a cavity is opened at the bottom of the brick formwork 3, and a internal corner reinforcement member 5 is installed in the cavity of the brick formwork 3. The internal corner reinforcement member 5 is in contact with the top surface of the first waterproof layer 2.

[0045] Specifically, the internal corner reinforcement member 5 provides an additional protective layer for the lapped position of the first waterproof layer 2. Since the internal corner reinforcement member 5 is located in the cavity of the brick formwork 3, it can cover and protect the lapped part, reduce physical damage during the construction process, and ensure the sealing performance of the joint, preventing water from penetrating through the construction joint or post-cast strip position, and improving the quality of the water interception project in the offshore wind farm.

[0046] Referring to Figure 3, a groove 6 is formed on the top surface of the raft slab main body 1, and the bottom surface of the first waterproof layer 2 is fixedly connected to the top surface of the raft slab main body 1; the internal corner reinforcement member 5 includes a T-shaped plate 51 fixedly connected to the inner top wall of the brick formwork 3, and fixing blocks 52 are symmetrically fixedly connected to the bottom of the T-shaped plate 51. The outer shape of the fixing blocks 52 is adapted to the groove 6, and a water swelling water stop strip 53 is installed between the two fixing blocks 52; an elastic plate 54 is arranged between the water swelling water stop strip 53 and the T-shaped plate 51. The elastic plate 54 is integrally in an "W" shape, and both ends of the elastic plate 54 are respectively inserted into the inner sides of the fixing blocks 52 on both sides; the water swelling water stop strip 53 is integrally in an anchor shape, and the top end of the water swelling water stop strip 53 is inserted into the inner side of the elastic plate 54.

[0047] Specifically, the water swelling water stop strip 53 in the shape of an anchor increases the contact area and friction force with the surrounding components, facilitating positioning and enhancing the water stop effect. When water penetrates into the internal corner part, the water swelling water stop strip 53 can better fill the gap, effectively blocking the possible gaps and preventing further water leakage.

[0048] Specifically, the elastic plate 54 in the shape of an "W" can, on the one hand, play a pre-tightening role on the water swelling water stop strip 53 during installation, enabling it to maintain a certain pressing state even when not in contact with water and reducing the gap; on the other hand, during the swelling process of the water swelling water stop strip 53, the elastic plate 54 can adapt to the swelling deformation of the water swelling water stop strip 53, providing a certain buffer space for it, and at the same time continuously applying a certain reverse pressure to the water swelling water stop strip 53 to ensure that the water swelling water stop strip 53 is closely attached to the surrounding components, enhancing the waterproof performance of the wind farm building.

[0049] Refer to Figure 2 and Figure 5 , a second waterproof layer 7 is laid on the brick formwork 3, and the top of the second waterproof layer 7 is bent at a right angle and turned up and rolled back on the side wall of the brick formwork 3. The shear wall body 4 is integrally in a "convex" shape (as shown in Figure 2 ), the top of the shear wall body 4 is fixedly connected to the turned-up part of the second waterproof layer 7; a plurality of reserved holes 41 are penetrated through the shear wall body 4, and a concrete protective layer 8 is fixedly connected to the outside of the shear wall body 4. A plurality of connecting steel bars are horizontally arranged in the concrete protective layer 8, and one end of the connecting steel bar is inserted into the reserved hole 41; both the first waterproof layer 2 and the second waterproof layer 7 are formed by bonding double-layer waterproof coiled materials.

[0050] Specifically, the first waterproof layer 2 is laid on the raft slab main body 1 to provide waterproof protection for the foundation part. The second waterproof layer 7 is laid on the brick formwork 3, and the turned-up part at the top of it is fixedly connected to the top of the shear wall body 4, forming a continuous waterproof barrier to prevent water from penetrating into the structure from the junction of the brick formwork 3 and the shear wall body 4.

[0051] Specifically, the protruding part of the shear wall 4 can function as a support rib, dispersing the lateral force (generated by strong winds or ocean waves) to other components, avoiding stress concentration at a certain point or area of the shear wall 4, reducing the deformation of the entire structure, and enhancing its stability. The concrete protective layer 8 is connected to the reserved holes 41 of the shear wall 4 through internal connecting steel bars and tightly wraps around the outer side of the shear wall 4. When bearing external forces, the connecting steel bars connect the shear wall 4 and the concrete protective layer 8 together, improving the strength of the entire structure and the stability of bearing loads. At the same time, the concrete protective layer 8 protects the shear wall 4, reducing the erosion of the external environment on the shear wall 4 and extending the service life of the structure.

[0052] Example 2. Refer to Figure 1 - Figure 8 , which is the second embodiment of the present invention. The difference between this embodiment and the first embodiment is that the bottom of the second waterproof layer 7 is bent and lapped on the first waterproof layer 2. A closing bead 9 is provided on the second waterproof layer 7, and a number of fasteners 10 are provided on the closing bead 9. The fastener 10 includes a bolt 101 installed inside the closing bead 9. A threaded hole for installing the bolt 101 is provided in the raft plate main body 1. Through holes for the bolt 101 to pass through are provided on both the first waterproof layer 2 and the second waterproof layer 7. Two wedge washers are provided between the bolt 101 and the closing bead 9.

[0053] Specifically, the closing bead 9 functions to fix and protect the edge of the waterproof layer, preventing the bottom edge of the second waterproof layer 7 from curling or rolling up during long-term use. After tightening the bolt 101, the closing bead 9 tightly presses the second waterproof layer 7, thereby making the second waterproof layer 7 closely fit with the first waterproof layer 2, enhancing the connection strength and sealing performance between the waterproof layers.

[0054] Refer to Figure 7 and Figure 8 , the wedge washer includes a gasket 102. Small teeth 103 are provided on one side of the two gaskets 102 away from each other, and large teeth 104 are provided on one side of the two gaskets 102 close to each other, and the two large teeth 104 are meshed with each other; the angle α of the mutual engagement of the large teeth 104 is greater than the lead angle β of the thread of the bolt 101.

[0055] Specifically, after the bolt 101 completes the locking action, the small teeth 103 on the outer side of the gasket 102 will tightly embed into the surface of the closing bead 9 or the bolt 101. At the same time, the large teeth 104 on the inner side of the gasket 102 are closely meshed with each other. Once the bolt 101 shows signs of loosening and rotating due to vibration, since the angle α of the large teeth 104 is larger than the lead angle β of the bolt 101, thus, the lift of the gasket 102 is greater than the lift of the bolt 101, which makes the gasket 102 further tighten the bolt 101, effectively preventing the bolt 101 from loosening. The remaining structure is the same as that of Embodiment 1.

[0056] Example 3. Refer to Figures 1-8 , which is the third embodiment of the present invention, and provides: a construction method of a post-cast strip shear wall dam interception device for a super-thick raft slab, including the following steps:

[0057] S1: Ram the cushion layer of the raft slab main body 1 and open a groove 6. After solidification and molding, lay a first waterproof layer 2 on its surface.

[0058] S2: Vertically build a brick formwork 3 on the first waterproof layer 2, and install a corner reinforcement member 5 in the cavity at the bottom of the brick formwork 3. Lay a second waterproof layer 7 on the surface of the brick formwork 3, and the second waterproof layer 7 overlaps with the first waterproof layer 2.

[0059] S3: Thermally weld the overlapping edges of the first waterproof layer 2 and the second waterproof layer 7 with a hand-held welding torch, and fix them with a closing strip 9 and fasteners 10.

[0060] S4: Construct the shear wall body 4 on the outer side wall of the brick formwork 3, reserve a number of reserved holes 41 on the shear wall body 4, and pour a concrete protective layer 8 on the outer side of the shear wall body 4 after the formwork support is completed.

[0061] S5: During the construction of the concrete protective layer 8, insert one end of the connecting steel bar into the reserved hole 41 of the shear wall body 4, and the concrete protective layer 8 as a whole wraps the brick formwork 3 and the shear wall body 4.

[0062] S6: Apply a sealing strip at the joints of the brick formwork 3, the shear wall body 4 and the concrete protective layer 8 to form an interception.

[0063] The above embodiments are only used to illustrate the technical solutions of the present invention, rather than limiting them; although the present invention has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that: they can still modify the technical solutions recorded in the foregoing embodiments, or perform equivalent replacements on some of the technical features; and these modifications or replacements will not make the essence of the corresponding technical solutions deviate from the protection scope of the technical solutions of the embodiments of the present invention.

Claims

1. A post-cast strip shear wall dam interception device for a super-thick raft foundation, comprising a raft foundation main body (1) and a first waterproof layer (2) laid on the raft foundation main body (1), characterized in that, A brick formwork (3) is vertically arranged on the first waterproof layer (2), and the brick formwork (3) is located inside the raft foundation main body (1). A shear wall body (4) is fixedly connected between the outer side wall of the raft foundation main body (1) and the outer side wall of the brick formwork (3); A cavity is formed at the bottom of the brick formwork (3), and a corner reinforcement member (5) is arranged in the cavity of the brick formwork (3). The corner reinforcement member (5) is in fit with the top surface of the first waterproof layer (2); A groove (6) is formed on the top surface of the raft foundation main body (1), and the bottom surface of the first waterproof layer (2) is fixedly connected with the top surface of the raft foundation main body (1); The corner reinforcement member (5) includes a T-shaped plate (51) arranged on the inner top wall of the brick formwork (3). Fixed blocks (52) are symmetrically arranged at the bottom of the T-shaped plate (51). The outer shape of the fixed blocks (52) is in fit with the groove (6). A water-swelling waterstop strip (53) is arranged between the two fixed blocks (52); An elastic plate (54) is arranged between the water-swelling waterstop strip (53) and the T-shaped plate (51). The elastic plate (54) is integrally in a "W" shape, and both ends of the elastic plate (54) are respectively inserted into the inner sides of the two fixed blocks (52); The water-swelling waterstop strip (53) is integrally in an anchor shape, and the top end of the water-swelling waterstop strip (53) is inserted into the inner side of the elastic plate (54).

2. The post-cast strip shear wall dam interception device for the ultra-thick raft slab according to claim 1, characterized in that, A second waterproof layer (7) is laid on the brick formwork (3), and the top of the second waterproof layer (7) is bent at a right angle and lapped and turned up on the side wall of the brick formwork (3). The shear wall body (4) is integrally in a "convex" shape, and the top of the shear wall body (4) is fixedly connected with the turned-up part of the second waterproof layer (7); Both the first waterproof layer (2) and the second waterproof layer (7) are formed by bonding double-layer waterproof coiled materials.

3. The post-cast strip shear wall dam interception device for ultra-thick raft plates according to claim 1, wherein A plurality of reserved holes (41) are formed through the shear wall body (4). A concrete protective layer (8) is fixedly connected to the outer side of the shear wall body (4). A plurality of connecting steel bars are horizontally arranged in the concrete protective layer (8), and one end of each connecting steel bar is inserted into the reserved hole (41).

4. The super-thick raft post-cast strip shear wall dam interception device according to claim 2, characterized in that, The bottom of the second waterproof layer (7) is bent and lapped on the first waterproof layer (2). A closing strip (9) is arranged on the second waterproof layer (7), and a plurality of fasteners (10) are arranged on the closing strip (9).

5. The super-thick raft post-cast strip shear wall dam interception device according to claim 4, characterized in that, The fastener (10) includes a bolt (101) installed on the inner side of the closing strip (9). A threaded hole for installing the bolt (101) is formed in the raft foundation main body (1). Through holes for the bolt (101) to pass through are formed in both the first waterproof layer (2) and the second waterproof layer (7). Two wedge-shaped washers are arranged between the bolt (101) and the closing strip (9).

6. The super-thick raft post-cast strip shear wall dam interception device according to claim 5, characterized in that, The wedge-shaped washer includes a gasket (102). Small teeth (103) are formed on the surfaces of the two gaskets (102) away from each other. Large teeth (104) are formed on the surfaces of the two gaskets (102) close to each other, and the two large teeth (104) are meshed with each other; The included angle α of the meshing of the large teeth (104) is greater than the lead angle β of the thread of the bolt (101).

7. A construction method of a post-cast strip shear wall dam interception device for a super-thick raft foundation, based on the post-cast strip shear wall dam interception device for a super-thick raft foundation as described in claim 6, characterized in that, Comprising the following steps: S1: Compact the cushion layer of the raft foundation main body (1) and open a groove (6). After solidifying and forming, lay a first waterproof layer (2) on its surface; S2: Vertically build a brick formwork (3) on the first waterproof layer (2), and install a corner reinforcement member (5) in the cavity at the bottom of the brick formwork (3). Lay a second waterproof layer (7) on the surface of the brick formwork (3), and the second waterproof layer (7) overlaps with the first waterproof layer (2); S3: Use a hand-held welding torch to thermally weld the overlapping edge of the first waterproof layer (2) and the second waterproof layer (7), and fix it with a closing strip (9) and a fastener (10); S4: Construct the shear wall body (4) on the outer side wall of the brick formwork (3), reserve a number of reserved holes (41) on the shear wall body (4), and pour a concrete protective layer (8) on the outer side of the shear wall body (4) after the formwork support is completed; S5: During the construction of the concrete protective layer (8), insert one end of the connecting steel bar into the reserved hole (41) of the shear wall body (4), and the concrete protective layer (8) as a whole wraps the brick formwork (3) and the shear wall body (4); S6: Apply a sealant strip at the connection of the brick formwork (3), the shear wall body (4) and the concrete protective layer (8) to form an interception.

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