A kind of assembled exterior wall with waterproof joints

Abstract

The present invention provides an assembled exterior wall with waterproof joints. The wall structure is formed by splicing a plurality of prefabricated wall bodies. Horizontal joints and vertical joints are formed between the prefabricated walls. The horizontal joints and vertical joints are not straight structures. The horizontal joints are provided with inclined tongues and grooves which are higher inside and lower outside, that is, they have inclined sections. When water enters the horizontal joints, it cannot flow upwards due to the action of gravity, and thus cannot reach the inner surface of the wall and cannot enter the room. A condensation cavity is provided in the middle of the vertical joint. The width of the condensation cavity is greater than the width of other positions of the vertical joint. After entering the condensation cavity, water vapor ends up as water droplets and flows downwards along the vertical joint. A water retaining protrusion is provided at the vertical joint. The water retaining protrusion is inclinedly arranged with the inner side being higher than the outer side. The water retaining protrusion is used to block water flowing down from above. The water flows downwardly inclined under the action of gravity and is guided outwards. The present invention forms obstacles to water by changing the horizontal joints and the vertical joints, and prevents water from flowing into the room along the joints, thereby achieving a waterproof effect.

Description

Technical Field

[0001] The invention relates to the field of building construction, and further relates to an assembled exterior wall with waterproof joints. Background Art

[0002] Prefabricated buildings refer to buildings that are partially or completely prefabricated in factories and then transported to the site for assembly and combination through reliable connection methods. They are promoted in China because of their high efficiency, convenient construction, good economy and good environmental performance.

[0003] Prefabricated exterior walls are assembled in blocks, which inevitably results in a large number of joints, which can easily become channels for water penetration. Prefabricated exterior wall waterproofing has inherent weaknesses; and the exterior walls are designed to be movable within a certain range, which increases the difficulty of waterproofing the wall panel joints.

[0004] Traditional weather-resistant sealants are prone to failure and cannot fully meet the anti-displacement and high adhesion requirements of prefabricated buildings. When water vapor enters the vertical joints, the cavity is unobstructed and cannot prevent rainwater from directly invading and easily entering the room. For the southern coastal areas with abundant rainfall and humid air, traditional sealing methods cannot achieve the desired waterproof effect.

[0005] For technicians in this field, how to improve the sealing performance of prefabricated and assembled buildings is a technical problem that needs to be solved at present. Summary of the invention

[0006] The present invention provides a joint waterproof assembled exterior wall, which achieves better waterproof effect through joint structure design. The specific scheme is as follows:

[0007] A waterproof assembled exterior wall, comprising transverse and vertical seams formed by splicing a plurality of prefabricated wall bodies, wherein the transverse seams are provided with inclined tongue-and-groove with the inner side higher and the outer side lower;

[0008] A condensation cavity is provided in the middle of the vertical seam, and the width of the condensation cavity is greater than the width of other positions of the vertical seam;

[0009] The vertical joint is provided with a water retaining protrusion, and the water retaining protrusion is inclined with the inner side higher and the outer side lower. The water retaining protrusion is used to block the water flowing down from the upper side and guide the water outwards.

[0010] Optionally, a U-shaped bending section is provided in the middle of the vertical seam, and the condensation cavity is formed by a groove opened in the protruding part of the U-shaped bending section.

[0011] Optionally, the offset of the U-shaped bending section of the vertical seam is greater than the width of the main part of the vertical seam.

[0012] Optionally, each prefabricated wall is provided with one water retaining protrusion, and the distance between the water retaining protrusion and the bottom surface of the prefabricated wall is 10 to 20 cm.

[0013] Optionally, a drain pipe is installed corresponding to each water retaining protrusion, and the drain pipe extends out of the outer surface of the wall to drain the water collected by the water retaining protrusion.

[0014] Optionally, the inclination angle of the water retaining protrusion is 45 to 60 degrees, and the inclination angle of the inclined tongue and groove is greater than the inclination angle of the water retaining protrusion.

[0015] Optionally, sealing strips and fireproof glue are arranged at positions of the transverse joints and vertical joints close to the inner surface, and sealing mortar is used at the inner wall joints; sealing strips and backing fillers are arranged at positions of the transverse joints and vertical joints close to the outer surface.

[0016] Optionally, the width of the main parts of the transverse seam and the vertical seam is 15 to 25 mm.

[0017] The present invention provides a waterproof assembled exterior wall, which is formed by splicing a plurality of prefabricated wall bodies to form a wall structure, wherein transverse joints and vertical joints are formed between the prefabricated walls, and the upper surface and the lower surface of the prefabricated wall can respectively form transverse joints with other prefabricated walls, and the left and right surfaces of the prefabricated wall can respectively form vertical joints with other prefabricated walls; the transverse joints and the vertical joints are not straight structures, and the transverse joints are provided with inclined tongues and grooves with inner high and outer low, that is, with inclined sections, so that when water enters the transverse joints, it cannot flow upwards due to gravity, and thus cannot The water vapor cannot reach the inner surface of the wall and cannot enter the room; a condensation cavity is provided in the middle of the vertical joint, and the width of the condensation cavity is greater than the width of other positions of the vertical joint. After the water vapor enters the condensation cavity, it ends up as water droplets and flows downward along the vertical joint. A water retaining protrusion is provided at the vertical joint, and the water retaining protrusion is inclined with the inner side higher and the outer side lower. The water retaining protrusion is used to block the water flowing down from the top. The water flows downwardly inclined under the action of gravity and guides the water outward; the present invention forms a barrier to water by changing the horizontal joints and the vertical joints, and prevents the water from flowing into the room along the joints, thereby achieving a waterproof effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0019] Figure 1A and Figure 1B These are two axonometric views at different angles of the horizontal joints and vertical joints formed by prefabricated walls;

[0020] Figure 2A and Figure 2B They are schematic diagrams of axonometric views of two prefabricated walls spliced ​​at different angles;

[0021] Figure 3A and Figure 3B They are front views of two prefabricated walls joined together to form a transverse joint;

[0022] Figure 4A It is a schematic diagram of the vertical joint in the top view;

[0023] Figure 4B , which is a schematic diagram of the water vapor flow in the vertical joint.

[0024] The figure includes:

[0025] Transverse joint 1, inclined tongue and groove 11, vertical joint 2, condensation cavity 21, water retaining protrusion 3, drainage pipe 4, sealing strip 5, fireproof glue 6, backing filler 7. DETAILED DESCRIPTION

[0026] The core of the present invention is to provide a prefabricated exterior wall with waterproof joints, which can achieve better waterproofing effect through joint structure design.

[0027] In order to enable those skilled in the art to better understand the technical solution of the present invention, the assembled exterior wall with waterproof joints of the present invention will be described in detail below with reference to the accompanying drawings and specific implementation methods.

[0028] The core of the present invention is to provide a waterproof assembled exterior wall, which is formed by splicing multiple prefabricated walls, forming a horizontal joint 1 and a vertical joint 2 between adjacent prefabricated walls. Figure 1A and Figure 1B As shown, there are two axonometric views at different angles of the transverse joint 1 and the vertical joint 2 formed by the prefabricated wall; in the figure, two sections of transverse joints 1 and two sections of vertical joints 2 are formed by splicing blocks of prefabricated walls.

[0029] Combination Figure 2A and Figure 2B As shown, they are schematic diagrams of axonometric views of two prefabricated walls spliced ​​at different angles; Figure 3A and Figure 3BThey are front views of two prefabricated wall bodies spliced ​​together to form a transverse joint 1; the transverse joint 1 is not a straight structure, and is provided with an inclined tongue-and-groove 11 that is higher inside and lower outside, that is, the end of the inclined tongue-and-groove 11 close to the inner surface of the wall is higher, and the end close to the outer surface of the wall is lower; the inclined tongue-and-groove 11 is a part of the transverse joint 1, and the inclined tongue-and-groove 11 forms an inclined section in a part of the transverse joint 1, and the part of the entire transverse joint 1 close to the inner and outer surfaces is horizontally extended. When water enters the outer surface of the transverse joint 1, it cannot climb back over the inclined tongue-and-groove 11 due to gravity, and cannot reach the inner surface of the wall.

[0030] A condensation cavity 21 is provided in the middle of the vertical joint 2. The width of the condensation cavity 21 is greater than the width of other positions of the vertical joint 2. Figure 4A As shown, it is a schematic diagram of the vertical seam 2 in the top view; the condensation cavity 21 is a part of the vertical seam 2, and the condensation cavity 21 is located in the middle section of the vertical seam 2, forming a space with a sudden increase in width in the middle part of the vertical seam 2. The water vapor entering from the vertical seam 2 cannot directly flow through the entire vertical seam 2. After entering the condensation cavity 21, the flow velocity is reduced and condensed into water droplets, which flow downward under the action of gravity.

[0031] A water retaining protrusion 3 is provided on the vertical joint 2. The water retaining protrusion 3 is arranged horizontally, and the water retaining protrusion 3 is inclined to be high inside and low outside, that is, the height of the end of the water retaining protrusion 3 close to the inner surface of the wall is higher, and the height of the end of the water retaining protrusion 3 close to the outer surface of the wall is lower. The water retaining protrusion 3 is used to block the water flowing down from above and guide the water outward. Specifically, the water retaining protrusion 3 is a convex block structure formed by two adjacent prefabricated walls, which can be protruded only on one of the prefabricated walls, or formed by the two prefabricated walls being respectively provided with protrusions and connected. The water retaining protrusion 3 can closely contact the sides of the two prefabricated walls, block the water flowing downward from the top of the vertical joint 2, and make the water converge and flow downward obliquely, and finally flow out of the wall.

[0032] The present invention arranges the side structure of the prefabricated wall reasonably so that the prefabricated wall forms a transverse joint 1 and a vertical joint 2 after being spliced. The transverse joint 1 and the vertical joint 2 respectively have the above-mentioned structures, which prevent water seepage or water vapor from flowing into the wall along the joints formed at the splicing point. The present invention is suitable for areas in the south with high temperature and heavy rainfall.

[0033] On the basis of the above scheme, the present invention sets a U-shaped bending section in the middle of the vertical joint 2, and the condensation cavity 21 is formed by a groove opened in the protruding part of the U-shaped bending section. Figure 4B As shown, it is a schematic diagram of the state of water vapor flow in the vertical joint 2; at the butt joint side of the two prefabricated walls, a convex block structure is formed on the left side and a groove structure is formed on the right side, and the convex block and the groove can be just butted together to form a narrow gap similar to a "U" shape, or a "C" shape, or an "eight" shape, Figure 4A The cross section of the convex structure provided on the left prefabricated wall is a trapezoid, and the cross section of the groove structure provided on the right prefabricated wall is a trapezoid. Figure 4A The U-shaped bending section shown is an isosceles trapezoidal structure, which is equivalent to being composed of two oblique sides and a top side of a trapezoid; a groove cavity is hollowed out on the convex structure, and the groove cavity is preferably an arc-shaped cross-section, such as Figure 4B As shown by the middle arrow, when water vapor enters from the outside, it is first blocked by the convex block structure set on the left prefabricated wall, moves along the slit, changes the original flow direction perpendicular to the wall surface, reaches the condensation cavity 21, and flows in a circular arc in the condensation cavity 21. The temperature gradually decreases during the circulation process. The water vapor is confined in the condensation cavity 21 and gradually condenses, and cannot directly reach the inner surface of the wall, thereby achieving a waterproof effect.

[0034] The offset of the U-shaped bending section of the vertical seam 2 is greater than the width of the main part of the vertical seam 2. Figure 4B As shown, the spacing d represents the offset of the U-shaped bending section, s represents the width s of the main part of the vertical seam 2, the inner surface and the outer surface of the vertical seam 2 are collinear, the U-shaped bending section is offset to the right, and the maximum offset distance d needs to be greater than the width s of the main part of the vertical seam 2. This design prevents water vapor from directly passing through the vertical seam 2 to reach the inner surface.

[0035] Specifically, the present invention sets a water retaining protrusion 3 on each prefabricated wall, that is, the water retaining protrusion 3 is only set on one of the vertical side surfaces of the prefabricated wall, and the other vertical side surface is vacant. Each prefabricated wall adopts the same standardized design, which is convenient for manufacturing. The distance between the water retaining protrusion 3 and the bottom surface of the prefabricated wall is 10 to 20 cm. Since each prefabricated wall is correspondingly provided with a water retaining protrusion 3, the water droplets formed in the vertical joint 2 between two laterally adjacent prefabricated walls are directly discharged to the outside through the corresponding water retaining protrusion 3, preventing a large amount of water from accumulating at the bottom. The water retaining protrusion 3 is close to the lower surface of the prefabricated wall, which can prevent the water gathered in the vertical joint 2 from entering the transverse joint 1.

[0036] Each water retaining protrusion 3 of the present invention is correspondingly installed with a drain pipe 4, which extends out of the outer surface of the wall to discharge the water collected by the water retaining protrusion 3. The water retaining protrusion 3 extends out from the vertical joint 2 to drain the water, and the drain pipe 4 maintains a consistent inclination angle with the water retaining protrusion 3.

[0037] Specifically, the inclination angle of the water retaining protrusion 3 of the present invention is 45 to 60 degrees. Figure 3A As shown, the inclination angle of the inclined groove 11 is greater than the inclination angle of the water retaining protrusion 3.

[0038] Preferably, the present invention arranges sealing strips 5 and fireproof glue 6 at positions close to the inner surface of the transverse joints 1 and the vertical joints 2, and uses sealing mortar at the inner wall joints; and arranges sealing strips 5 and backing fillers 7 at positions close to the outer surface of the transverse joints 1 and the vertical joints 2.

[0039] Silane-modified polyurethane sealant is used in the horizontal joint 1 and vertical joint 2 near the outdoor, so that the joint structure has obvious advantages over traditional sealing methods in terms of chemical corrosion resistance, freeze-thaw cycle resistance, water-immersion fixed-stretch bonding performance or pollution resistance; backing material is used to control the embedding depth of the sealing material to prevent the sealing material from bonding to the bottom of the joint and avoid a three-sided stress state. Sealing strips and fireproof glue are installed on the indoor side. The sealing strips are mainly EPDM rubber, chloroprene rubber and silicone rubber.

[0040] Specifically, in the present invention, the width of the main part of the transverse seam 1 and the width of the main part of the vertical seam 2 are 15-25 mm, and the optimal width is 20 mm.

[0041] The specific construction methods are as follows:

[0042] The mechanized prefabricated walls are assembled on site for construction. The lower prefabricated wall is provided with an upper tongue and groove, and the upper prefabricated wall is provided with a lower tongue and groove. When the upper and lower prefabricated walls are spliced, a splicing joint is reserved between the walls to form a transverse joint 1; the joint is filled with materials with good bonding, sealing and waterproof properties to connect the two prefabricated exterior walls together. The outdoor side is filled with sealant and backing material in turn, and the indoor side is filled with sealing strips and fireproof glue in turn to connect the two walls.

[0043] In two adjacent prefabricated walls in the same row, the side wall of one prefabricated wall is convex, and the side wall of the other prefabricated wall is concave, and they are butted together to form a joint, a U-shaped slit, and a condensation cavity 21. The joint is filled with materials with good bonding, sealing and waterproof properties to connect the two prefabricated exterior walls together. The outdoor side is filled with sealant and backing material in turn, and the indoor side is filled with sealing strips and fireproof glue in turn to connect the two walls.

[0044] Finally, a drainage pipe 4 is installed at the lower end of the water retaining protrusion 3, and a water guide pipe made of a PVC pipe with a diameter of 16 mm is used to penetrate the backing material and the sealant layer.

[0045] The above description of the disclosed embodiments enables one skilled in the art to implement or use the present invention. Various modifications to these embodiments will be apparent to one skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention will not be limited to the embodiments shown herein, but rather to the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A waterproof assembled exterior wall, characterized in that: A transverse joint (1) and a vertical joint (2) formed by splicing a plurality of prefabricated wall bodies, wherein the transverse joint (1) is provided with an inclined tongue-and-groove (11) which is higher inside and lower outside; A condensation cavity (21) is provided in the middle of the vertical seam (2), and the width of the condensation cavity (21) is greater than the width of other positions of the vertical seam (2); The vertical joint (2) is provided with a water retaining protrusion (3), the water retaining protrusion (3) is arranged to be inclined with the inner side higher than the outer side, and the water retaining protrusion (3) is used to retain water flowing down from above and guide the water outwards; A U-shaped bending section is arranged in the middle of the vertical joint (2); the condensation cavity (21) is formed by a groove provided in the protruding part of the U-shaped bending section, and the groove cavity adopts an arc-shaped cross-section; the part of the vertical joint (2) close to the inner surface and the part close to the outer surface are collinear, and the maximum offset distance d of the U-shaped bending section needs to be greater than the width s of the main part of the vertical joint (2); When water vapor enters from the outside, it is first blocked by the convex block structure provided on the left prefabricated wall, and moves along the slit to change the original flow direction perpendicular to the wall surface, and reaches the condensation cavity (21) to flow in an arc. During the circulation of water vapor, it cools down and condenses, and cannot directly reach the inner surface of the wall, thereby achieving a waterproof effect; A drainage pipe (4) is installed corresponding to each of the water retaining protrusions (3); the drainage pipe (4) extends out of the outer surface of the wall and is used to discharge the water collected by the water retaining protrusions (3).

2. The assembled exterior wall with waterproof joints according to claim 1, characterized in that: The offset of the U-shaped bending section of the vertical seam (2) is greater than the width of the main part of the vertical seam (2).

3. The assembled exterior wall with waterproof joints according to claim 2 is characterized in that: Each prefabricated wall is provided with one water retaining protrusion (3), and the distance between the water retaining protrusion (3) and the bottom surface of the prefabricated wall is 10 to 20 cm.

4. The assembled exterior wall with waterproof joints according to claim 3 is characterized in that: The inclination angle of the water retaining protrusion (3) is 45 to 60 degrees, and the inclination angle of the inclined groove (11) is greater than the inclination angle of the water retaining protrusion (3).

5. The assembled exterior wall with waterproof joints according to claim 4 is characterized in that: Sealing strips (5) and fireproof glue (6) are arranged near the inner surface of the transverse joints (1) and the vertical joints (2), and sealing mortar is used at the inner wall joints; sealing strips (5) and backing fillers (7) are arranged near the outer surface of the transverse joints (1) and the vertical joints (2).

6. The assembled exterior wall with waterproof joints according to claim 5, characterized in that: The width of the main parts of the transverse seam (1) and the vertical seam (2) is 15 to 25 mm.

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