A building outer wall anti-seepage and anti-crack structure and a construction method thereof

Abstract

This application relates to a waterproof and crack-resistant structure and construction method for exterior walls of buildings, belonging to the field of building construction technology. The waterproof and crack-resistant structure includes multiple exterior wall panels arranged horizontally in sequence. Connecting grooves are formed on opposite sides of the exterior wall panels on the side away from the interior. These connecting grooves extend along the length of the joint between adjacent exterior wall panels. A waterproof membrane is installed in the connecting groove on either side of the exterior wall panel, extending beyond the connecting groove. The waterproof membrane is located on the same side of the corresponding exterior wall panel and is used to overlap with the connecting groove of the adjacent exterior wall panel. A crack-resistant mortar layer is provided in the connecting groove connecting adjacent exterior wall panels, located on the side of the waterproof membrane away from the interior. The exterior wall panels are equipped with an adhesive mechanism for bonding the waterproof membrane on adjacent exterior wall panels. This application improves the waterproof and crack-resistant performance at the joints of exterior wall panels.

Description

Technical Field

[0001] This application relates to the field of building construction technology, and in particular to a waterproof and crack-resistant structure for exterior walls of buildings and its construction method. Background Technology

[0002] Prefabricated concrete structures are widely used in building construction. In prefabricated concrete structures, the construction of the joints between exterior wall panels is crucial to reduce the occurrence of cracking and water seepage.

[0003] Generally, methods for treating joints in exterior wall waterproofing and crack prevention include filling with sealant and connecting with wet joints using cast-in-place concrete. However, due to various factors, cracking and leakage still exist to varying degrees at the joints of exterior wall panels. Summary of the Invention

[0004] To help improve the waterproof and crack-resistant performance of the joints of exterior wall panels, this application provides a waterproof and crack-resistant structure and construction method for exterior walls of buildings.

[0005] Firstly, the technical solution provided in this application for a waterproof and crack-resistant exterior wall structure for residential buildings is as follows: A waterproof and crack-resistant exterior wall structure for a building includes multiple exterior wall panels arranged horizontally in sequence. Each exterior wall panel has a connecting groove on both opposite sides of its side away from the interior. The connecting groove extends along the length of the joint between adjacent exterior wall panels. A waterproof membrane is installed in the connecting groove on either side of the exterior wall panel, extending beyond the connecting groove. The waterproof membrane is located on the same side of the corresponding exterior wall panel and is used to overlap with the connecting groove of the adjacent exterior wall panel. A crack-resistant mortar layer is provided in the connecting groove connecting adjacent exterior wall panels, located on the side of the waterproof membrane away from the interior. The exterior wall panels are equipped with an adhesive mechanism for bonding the waterproof membrane on adjacent exterior wall panels.

[0006] Preferably, the bonding mechanism includes a reservoir capsule, a piercing needle, and a pushing assembly disposed on the exterior wall panel. The reservoir capsule stores adhesive. A cavity is formed on the side of the exterior wall panel away from the waterproof membrane. The cavity is located on the side of the connecting groove closer to the interior. The reservoir capsule is movably disposed within the cavity. An adhesive outlet is formed on the bottom wall of the connecting groove on the side away from the waterproof membrane. The adhesive outlet communicates with the cavity. The piercing needle is disposed on the side of the cavity near the adhesive outlet. The pushing assembly is used to push the reservoir capsule toward the direction closer to the piercing needle.

[0007] Preferably, the pushing assembly includes an elastic plate disposed within the cavity, a push plate slidably disposed within the outer wall panel, and a sliding member disposed between the outer wall panels. The elastic plate is located on the side of the reservoir capsule away from the puncture needle, the reservoir capsule is disposed on the elastic plate, the push plate is located on the side of the elastic plate away from the reservoir capsule, and the sliding member is used to push the push plate to slide towards the elastic plate.

[0008] Preferably, the sliding component includes a sliding block slidably disposed within the exterior wall panel and an insert block disposed on the side wall of the exterior wall panel. A slot is provided on the side of the exterior wall panel away from the waterproof membrane. The sliding block slides within the slot. The sliding direction of the sliding block is perpendicular to the sliding direction of the push plate. The sliding block is located on the side of the push plate away from the waterproof membrane. The side of the sliding block near the push plate is an inclined surface. The inclined surface near the waterproof membrane is inclined in the direction away from the push plate. The push plate is used to slide relative to the inclined surface. The insert block is located on the side of the exterior wall panel near the waterproof membrane. The insert block is used to engage with a slot on an adjacent exterior wall panel and push the sliding block to slide.

[0009] Preferably, a wire mesh is provided on the waterproof membrane, and the wire mesh is located between the waterproof membrane and the crack-resistant mortar layer.

[0010] Preferably, a slot for engaging with the waterproof membrane is provided on the sidewall of the connecting groove away from the waterproof membrane.

[0011] Preferably, a magnet is provided on the sliding block, and an iron sheet is provided on the bottom wall of the slot. The magnet is used to attract and cooperate with the iron sheet. When the magnet is attracted and cooperated with the iron sheet, the push plate abuts against the side of the inclined surface near the waterproof membrane.

[0012] Preferably, a spring is provided between the insert block and the outer wall panel, and the elastic force of the spring is greater than the adsorption force between the magnet block and the iron sheet.

[0013] Secondly, the construction method for a waterproof and crack-resistant exterior wall structure for residential buildings provided in this application adopts the following technical solution: A construction method for the aforementioned waterproof and crack-resistant exterior wall structure of a building includes the following steps: Step 1: Install one side of the exterior wall panel, align the connecting grooves between adjacent exterior wall panels, and make the waterproof membrane on the installed exterior wall panel fit into the required connecting groove position of the adjacent exterior wall panel; Step 2: Adhere the waterproof membrane to the required connection groove position of the adjacent exterior wall panel using the adhesive bonding mechanism; Step 3: Apply crack-resistant mortar layer in the connecting groove between adjacent exterior wall panels.

[0014] In summary, this application includes the following beneficial technical effects: When splicing adjacent exterior wall panels, the waterproof membrane on the exterior wall panel is adhered to the connecting groove on the side of the adjacent exterior wall panel away from its own waterproof membrane. The waterproof membrane is then bonded to the corresponding connecting groove of the adjacent exterior wall panel using an adhesive mechanism. Then, a crack-resistant mortar layer is applied to the surface of the waterproof membrane. By placing the waterproof membrane at the joint between the exterior wall panels, the seepage prevention effect is improved. The crack-resistant mortar layer on the surface of the waterproof membrane further improves the crack resistance of the exterior wall and protects the waterproof membrane, thereby helping to improve the seepage prevention and crack resistance at the joint of the exterior wall panels. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the overall structure of an embodiment of this application.

[0016] Figure 2 This is a partial structural cross-sectional view of an embodiment of this application.

[0017] Figure 3 This is a partial exploded view of an embodiment of this application.

[0018] Figure 4 yes Figure 3 Enlarged view of part A in the middle.

[0019] Explanation of reference numerals in the attached drawings: 1. Exterior wall panel; 2. Connecting groove; 3. Waterproof membrane; 4. Crack-resistant mortar layer; 5. Storage capsule; 6. Puncture needle; 7. Cavity; 8. Glue outlet; 9. Elastic plate; 10. Push plate; 11. Sliding component; 111. Sliding block; 112. Insert block; 12. Slot; 13. Inclined surface; 14. Wire mesh; 15. Card slot; 16. Magnet block; 17. Iron sheet; 18. Spring; 19. Guide groove; 20. Slide groove; 21. Semi-circular hole. Detailed Implementation

[0020] The following is in conjunction with the appendix Figure 1-4 This application will be described in further detail.

[0021] This application discloses a waterproof and crack-resistant structure for the exterior walls of residential buildings. (Refer to...) Figure 1 The waterproof and crack-resistant structure of the building's exterior wall includes multiple exterior wall panels 1 arranged sequentially in a horizontal direction. Each exterior wall panel 1 has a connecting groove 2 on both opposite sides of the side away from the interior. The arrangement direction of the two connecting grooves 2 is parallel to the arrangement direction of the multiple exterior wall panels 1. The connecting groove 2 is opened along the length direction of the joint between adjacent exterior wall panels 1. The connecting groove 2 passes through the edge of the exterior wall panel 1 near one side, so that the connecting grooves 2 between adjacent exterior wall panels 1 are connected.

[0022] Reference Figure 1 and Figure 2A waterproof membrane 3 is adhered to the connecting groove 2 on any side of the exterior wall panel 1. The waterproof membrane 3 is located on the same side of the corresponding exterior wall panel 1. The waterproof membrane 3 is used to overlap and cooperate with the connecting groove 2 on the side of the adjacent exterior wall panel 1 away from itself. A wire mesh 14 is fixedly connected to the side of the waterproof membrane 3 away from the interior. The wire mesh 14 and the waterproof membrane 3 extend into corresponding connecting grooves 2 along the arrangement direction of the multiple exterior wall panels 1. The setting of the wire mesh 14 helps to keep the waterproof membrane 3 flat and facilitates the fit of the waterproof membrane 3 with the connecting groove 2 of the adjacent exterior wall panel 1.

[0023] Reference Figure 1 and Figure 2 The connecting groove 2 on the side away from the waterproof membrane 3 has a slot 15 for engaging with the wire mesh 14 and the waterproof membrane 3 on the adjacent exterior wall panel 1. The engagement of the waterproof membrane 3 and the slot 15 further improves the anti-leakage effect. An adhesive mechanism is provided on the exterior wall panel 1 for bonding the waterproof membrane 3 on the adjacent exterior wall panel 1.

[0024] Reference Figure 1 and Figure 2 The two connecting grooves 2 between adjacent exterior wall panels 1 are filled with crack-resistant mortar layer 4, which is located on the side of the wire mesh 14 away from the interior.

[0025] When splicing adjacent exterior wall panels 1, the waterproof membrane 3 on the exterior wall panel 1 is attached to the connecting groove 2 on the side of the adjacent exterior wall panel 1 away from its own waterproof membrane 3, so that the waterproof membrane 3 and the wire mesh 14 extend into the slot 15 of the adjacent exterior wall panel 1. Then, the waterproof membrane 3 is bonded to the corresponding connecting groove 2 of the adjacent exterior wall panel 1 through the adhesive mechanism. Then, the crack-resistant mortar layer 4 is applied to the surface of the wire mesh 14. The waterproof membrane 3 is placed at the joint between the exterior wall panels 1, which helps to improve the anti-leakage effect. The crack-resistant mortar layer 4 is applied to the surface of the waterproof membrane 3, which further improves the crack resistance and protects the waterproof membrane 3, thereby reducing the phenomenon of cracking and leakage at the joint of the exterior wall panels 1.

[0026] Reference Figure 2 and Figure 3To facilitate the bonding of the waterproof membrane 3 to the bottom wall of the connecting groove 2 near the adjacent exterior wall panel 1, a cavity 7 is provided on the side of the exterior wall panel 1 away from the waterproof membrane 3. The cavity 7 is located on the side of the connecting groove 2 closer to the interior and aligned with the connecting groove 2 on the adjacent side. The bonding mechanism includes a storage capsule 5, a piercing needle 6, and a pushing component. The storage capsule 5 stores adhesive and is a soft capsule. The storage capsule 5 is movably disposed in the cavity 7. Multiple adhesive outlet holes 8 are provided on the bottom wall of the connecting groove 2 on the side away from the waterproof membrane 3. The depth direction of the adhesive outlet holes 8 is perpendicular to the plane of the exterior wall panel 1. One end of the adhesive outlet hole 8 is connected to the connecting groove 2, and the other end is connected to the cavity 7. Multiple piercing needles 6 are provided and are fixedly disposed on the inner wall of the cavity 7 near the adhesive outlet holes 8. The length direction of the piercing needles 6 is parallel to the depth direction of the adhesive outlet holes 8. The pushing component is disposed on the exterior wall panel 1 and is used to push the storage capsule 5 toward the direction close to the piercing needle 6.

[0027] Reference Figure 3 and Figure 4 To facilitate pushing the storage capsule 5 towards the puncture needle 6, the pushing assembly includes an elastic plate 9, a pusher plate 10, and a sliding member 11. The elastic plate 9 is an elastic rubber plate, fixedly connected to the inner wall of the cavity 7 on opposite sides along the arrangement direction of the multiple outer wall panels 1. The elastic plate 9 is located on the side of the storage capsule 5 away from the puncture needle 6, and the storage capsule 5 is fixedly connected to the side of the elastic plate 9 near the dispensing hole 8. The pusher plate 10 is located on the side of the elastic plate 9 away from the storage capsule 5, and is fixedly connected to the side of the elastic plate 9 away from the storage capsule 5. The pusher plate 10 slides through the cavity 7, guiding its sliding. The sliding direction of the pusher plate 10 is perpendicular to the plane of the outer wall panel 1. The elastic plate 9 is an arc-shaped plate. When the outer wall panel 1 is in its initial state, the elastic plate 9 protrudes outward towards the direction away from the storage capsule 5, and the storage capsule 5 is detached from the puncture needle 6. This prevents the storage capsule 5 from contacting the puncture needle 6 during the transport of the outer wall panel 1, thus preventing accidental rupture of the storage capsule 5.

[0028] Reference Figure 3 and Figure 4The sliding member 11 is disposed between the outer wall panels 1. The sliding member 11 is used to push the push plate 10 to slide towards the elastic plate 9. To facilitate the sliding of the push plate 10, a slot 12 is provided on the side wall of the outer wall panel 1 away from the waterproof membrane 3. The depth direction of the slot 12 is parallel to the arrangement direction of the multiple outer wall panels 1. The slot 12 is located on the side of the cavity 7 away from the connecting groove 2. The end of the push plate 10 away from the cavity 7 slides in the slot 12. The sliding member 11 includes a sliding block 111 and an insert block 112. The sliding block 111 is slidably disposed in the slot 12. The sliding direction of the sliding block 111 is perpendicular to the sliding direction of the push plate 10 and parallel to the arrangement direction of the multiple outer wall panels 1. The sliding block 111 is located on the side of the push plate 10 away from its own waterproof membrane 3. The side of the sliding block 111 near the push plate 10 is a slope 13 (see reference). Figure 2 The side of the inclined surface 13 closest to its own waterproof membrane 3 is inclined away from the push plate 10. The side of the push plate 10 away from the elastic plate 9 is inclined and cooperates with the inclined surface 13. The push plate 10 is used to slide relative to the inclined surface 13.

[0029] Reference Figure 2 and Figure 3 A magnet 16 is fixed to the bottom wall of the sliding block 111. A guide groove 19 is provided on the bottom wall of the slot 12 to slide and engage with the magnet 16. An iron sheet 17 is fixed inside the guide groove 19, located on the side of the magnet 16 away from the waterproof membrane 3. The magnet 16 is used to attract and engage with the iron sheet 17. When the magnet 16 and the iron sheet 17 are attracted and engaged, the push plate 10 and the inclined surface 13 abut against the side closest to the waterproof membrane 3. This prevents the sliding block 111 from sliding unnecessarily during transportation of the exterior wall panel 1, reducing the possibility of accidental breakage of the storage capsule 5.

[0030] Reference Figure 3 and Figure 4 A groove 20 is provided on the side wall of the exterior wall panel 1 near the waterproof membrane 3. The groove 20 is aligned with the slot 12. The insert 112 is slidably disposed in the groove 20. The sliding direction of the insert 112 is parallel to the sliding direction of the sliding block 111. A spring 18 is provided between the insert 112 and the bottom wall of the corresponding groove 20. The extension direction of the spring 18 is parallel to the sliding direction of the insert 112. The elastic force of the spring 18 is greater than the adsorption force between the magnet 16 and the iron sheet 17. The insert 112 is used to engage with the slot 12 on the adjacent exterior wall panel 1 and push the sliding block 111 to slide towards the push plate 10.

[0031] When two adjacent exterior wall panels 1 are spliced ​​together, the waterproof membrane 3 on the exterior wall panel 1 aligns with the connecting groove 2 on the adjacent exterior wall panel 1. At this time, the insert 112 on the exterior wall panel 1 aligns with the slot 12 on the adjacent exterior wall panel 1. Then, the insert 112 is gradually inserted into the slot 12 of the adjacent exterior wall panel 1. Since the elastic force of the spring 18 is greater than the attraction force between the magnet 16 and the iron sheet 17, the insert 112 will abut against the corresponding sliding block 111 and slide towards the push plate 10, causing the magnet 16 and the iron sheet 17 to separate. At this time, the wire mesh 14 and the waterproof membrane 3 gradually extend into the corresponding slot 15, and the sliding block 111 slides towards the push plate 10. During the directional movement of the push plate 10, the inclined surface 13 slides relative to the push plate 10, driving the push plate 10 to move closer to the elastic plate 9. The push plate 10 lifts the elastic plate 9, and the elastic plate 9 pushes the storage capsule 5 to move closer to the glue outlet 8, causing the storage capsule 5 to press against the piercing needle 6. The piercing needle 6 punctures the storage capsule 5, and the adhesive flows out of the storage capsule 5. Under the pressure of the elastic plate 9, the adhesive in the storage capsule 5 flows through the glue outlet 8 to the bottom wall of the connecting groove 2 and the waterproof membrane 3, thereby helping to bond and fix the waterproof membrane 3 to the connecting groove 2 on the adjacent exterior wall panel 1, which helps to improve the anti-leakage effect. Since the spring 18 is provided between the insert block 112 and the exterior wall panel 1, the insert block 112 can slide into the sliding groove 20 under manual pushing force, which helps to place the exterior wall panel 1 at the edge of the assembly.

[0032] Reference Figure 2 Semicircular holes 21 are provided on opposite sides of the exterior wall panel 1. The semicircular holes 21 are located between the waterproof membrane 3 and the insert block 112. The length direction of the semicircular holes 21 is parallel to the length direction of the joint between adjacent exterior wall panels 1. Waterstop strips or thermal insulation strips (not shown in the figure) are installed in the semicircular holes 21 between adjacent exterior wall panels 1. Waterstop strips or thermal insulation strips can further improve the anti-seepage and thermal insulation effect.

[0033] The implementation principle of this application embodiment is as follows: When splicing adjacent exterior wall panels 1, the waterproof membrane 3 on the exterior wall panel 1 is aligned with the connecting groove 2 on the adjacent exterior wall panel 1. At this time, the insert 112 on the exterior wall panel 1 is aligned with the slot 12 on the adjacent exterior wall panel 1. Then, the insert 112 is gradually inserted into the slot 12 of the adjacent exterior wall panel 1. The insert 112 abuts against the corresponding sliding block 111 and slides towards the push plate 10, causing the magnet 16 and the iron sheet 17 to separate. At this time, the wire mesh 14 and the waterproof membrane 3 gradually extend into the slot 15, and the sliding block 111 slides towards the push plate 10. During the directional movement of the push plate 10, the inclined surface 13 gradually abuts against the push plate 10 and moves towards the elastic plate 9. Then, the push plate 10 lifts the elastic plate 9, and the elastic plate 9 pushes the storage capsule 5 towards the glue outlet 8, so that the storage capsule 5 presses against the piercing needle 6. The piercing needle 6 pierces the storage capsule 5, and at this time, the adhesive flows out of the storage capsule 5. Under the pressure of the elastic plate 9, the adhesive in the storage capsule 5 flows through the glue outlet 8 to the bottom wall of the connecting groove 2 and the waterproof membrane 3, thereby bonding and fixing the waterproof membrane 3 to the connecting groove 2 on the adjacent exterior wall panel 1.

[0034] Then, an anti-crack mortar layer 4 is applied to the surface of the wire mesh 14. Waterproof membrane 3 is installed at the joints between the exterior wall panels 1. The interlocking of the waterproof membrane 3 with the slot 15 and the insertion of the insert block 112 with the slot 12 both help to improve the anti-leakage effect. The anti-crack mortar layer 4 is applied to the surface of the waterproof membrane 3, which further improves the anti-crack performance and protects the waterproof membrane 3, thereby reducing the occurrence of cracking and leakage at the joints of the exterior wall panels 1.

[0035] This application also discloses a construction method for a waterproof and crack-resistant exterior wall structure for buildings. The construction method for the waterproof and crack-resistant exterior wall structure for buildings described above includes the following steps: Step 1: Install one side of the exterior wall panel 1, align the connecting groove 2 between adjacent exterior wall panels 1, and gradually attach the waterproof membrane 3 on the installed exterior wall panel 1 to the required connecting groove 2 position of the adjacent exterior wall panel 1. Move the wire mesh 14 and the waterproof membrane 3 toward the slot 15, and install the waterstop strip or thermal insulation strip in the semi-circular hole 21 of the adjacent exterior wall panel 1. Step 2: Insert block 112 gradually extends into slot 12 of adjacent exterior wall panel 1. Insert block 112 pushes sliding block 111 to slide towards push plate 10. The inclined surface 13 of sliding block 111 slides relative to push plate 10, driving push plate 10 to move towards elastic plate 9. Push plate 10 lifts elastic plate 9, causing elastic plate 9 to push the storage capsule 5 towards puncture needle 6. Puncture needle 6 punctures storage capsule 5. Adhesive in storage capsule 5 flows along glue outlet 8 to between waterproof membrane 3 and bottom wall of connecting groove 2, bonding waterproof membrane 3 to the required connecting groove 2 position of adjacent exterior wall panel 1. Step 3: Apply crack-resistant mortar layer 4 to the surface of the wire mesh 14 between adjacent exterior wall panels 1.

[0036] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. A waterproof and crack-resistant structure for the exterior wall of a building, comprising a plurality of exterior wall panels (1) arranged sequentially along a horizontal direction, characterized in that: The exterior wall panel (1) has connecting grooves (2) on both opposite sides of the side away from the interior. The connecting grooves (2) are opened along the joint length of the adjacent exterior wall panels (1). A waterproof membrane (3) is installed in the connecting groove (2) on either side of the exterior wall panel (1). The waterproof membrane (3) extends outside the connecting groove (2) and is located on the same side of the corresponding exterior wall panel (1). The waterproof membrane (3) is used to overlap with the connecting groove (2) of the adjacent exterior wall panel (1). A crack-resistant mortar layer (4) is provided in the connecting groove (2) connecting adjacent exterior wall panels (1). The crack-resistant mortar layer (4) is located on the side of the waterproof membrane (3) away from the interior. The exterior wall panel (1) is provided with an adhesive mechanism. The bonding mechanism is used to bond waterproof membrane (3) on adjacent exterior wall panels (1). The bonding mechanism includes a reservoir (5), a piercing needle (6), and a pushing component disposed in the exterior wall panel (1). The reservoir (5) stores adhesive. A cavity (7) is provided on the side of the exterior wall panel (1) away from the waterproof membrane (3). The cavity (7) is located on the side of the connecting groove (2) closer to the interior. The reservoir (5) is movably disposed in the cavity (7). An adhesive outlet (8) is provided on the bottom wall of the connecting groove (2) on the side away from the waterproof membrane (3). The adhesive outlet (8) communicates with the cavity (7). The piercing needle (6) is disposed on the side of the cavity (7) near the adhesive outlet (8). The pushing component is used to push the reservoir. The capsule (5) is squeezed toward the puncture needle (6). The pushing assembly includes an elastic plate (9) disposed in the cavity (7), a push plate (10) slidably disposed in the outer wall panel (1), and a sliding member (11) disposed between the outer wall panels (1). The elastic plate (9) is located on the side of the storage capsule (5) away from the puncture needle (6). The storage capsule (5) is disposed on the elastic plate (9). The push plate (10) is located on the side of the elastic plate (9) away from the storage capsule (5). The sliding member (11) is used to push the push plate (10) to slide toward the elastic plate (9). The sliding member (11) includes a sliding block (111) slidably disposed in the outer wall panel (1) and a sliding block disposed on the side wall of the outer wall panel (1). The wall panel (1) has a slot (12) on the side away from the waterproof membrane (3). The sliding block (111) slides in the slot (12). The sliding direction of the sliding block (111) is perpendicular to the sliding direction of the push plate (10). The sliding block (111) is located on the side of the push plate (10) away from the waterproof membrane (3). The side of the sliding block (111) near the push plate (10) is a slope (13). The slope (13) near the waterproof membrane (3) is inclined in the direction away from the push plate (10). The push plate (10) is used to slide relative to the slope (13). The insert (112) is located on the side of the wall panel (1) near the waterproof membrane (3).The insert (112) is used to engage with the slot (12) on the adjacent outer wall panel (1) and push the sliding block (111) to slide.

2. The waterproof and crack-resistant structure for exterior walls of buildings according to claim 1, characterized in that: A wire mesh (14) is provided on the waterproof membrane (3), and the wire mesh (14) is located between the waterproof membrane (3) and the crack-resistant mortar layer (4).

3. The waterproof and crack-resistant structure for exterior walls of buildings according to claim 2, characterized in that: A slot (15) for engaging with the waterproof membrane (3) is provided on the side wall of the connecting groove (2) away from the waterproof membrane (3).

4. The waterproof and crack-resistant structure for exterior walls of buildings according to claim 1, characterized in that: A magnet (16) is provided on the sliding block (111), and an iron sheet (17) is provided on the bottom wall of the slot (12). The magnet (16) is used to attract and cooperate with the iron sheet (17). When the magnet (16) and the iron sheet (17) are attracted and cooperated, the push plate (10) and the inclined surface (13) abut against the side of the waterproof membrane (3).

5. The waterproof and crack-resistant structure for exterior walls of residential buildings according to claim 1, characterized in that: A spring (18) is provided between the insert (112) and the outer wall panel (1), and the elastic force of the spring (18) is greater than the adsorption force between the magnet (16) and the iron sheet (17).

6. A construction method for a waterproof and crack-resistant exterior wall structure for residential buildings as described in any one of claims 1-5, characterized in that, Includes the following steps: Step 1: Install one side of the exterior wall panel (1), align the connecting grooves (2) between adjacent exterior wall panels (1), and make the waterproof membrane (3) on the installed exterior wall panel (1) fit into the required connecting groove (2) position of the adjacent exterior wall panel (1); Step 2: Adhere the waterproof membrane (3) to the required connection groove (2) of the adjacent exterior wall panel (1) using the adhesive bonding mechanism; Step 3: Apply crack-resistant mortar layer (4) in the connecting groove (2) between adjacent exterior wall panels (1).

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