CN113846815A - External wallboard waterproof structure with drainage plate seam water seepage function and construction method - Google Patents
External wallboard waterproof structure with drainage plate seam water seepage function and construction method Download PDFInfo
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- CN113846815A CN113846815A CN202111126486.XA CN202111126486A CN113846815A CN 113846815 A CN113846815 A CN 113846815A CN 202111126486 A CN202111126486 A CN 202111126486A CN 113846815 A CN113846815 A CN 113846815A
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04F—FINISHING WORK ON BUILDINGS, e.g. STAIRS, FLOORS
- E04F13/00—Coverings or linings, e.g. for walls or ceilings
- E04F13/07—Coverings or linings, e.g. for walls or ceilings composed of covering or lining elements; Sub-structures therefor; Fastening means therefor
- E04F13/08—Coverings or linings, e.g. for walls or ceilings composed of covering or lining elements; Sub-structures therefor; Fastening means therefor composed of a plurality of similar covering or lining elements
- E04F13/0889—Coverings or linings, e.g. for walls or ceilings composed of covering or lining elements; Sub-structures therefor; Fastening means therefor composed of a plurality of similar covering or lining elements characterised by the joints between neighbouring elements, e.g. with joint fillings or with tongue and groove connections
- E04F13/0891—Coverings or linings, e.g. for walls or ceilings composed of covering or lining elements; Sub-structures therefor; Fastening means therefor composed of a plurality of similar covering or lining elements characterised by the joints between neighbouring elements, e.g. with joint fillings or with tongue and groove connections with joint fillings
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04F—FINISHING WORK ON BUILDINGS, e.g. STAIRS, FLOORS
- E04F13/00—Coverings or linings, e.g. for walls or ceilings
- E04F13/07—Coverings or linings, e.g. for walls or ceilings composed of covering or lining elements; Sub-structures therefor; Fastening means therefor
- E04F13/08—Coverings or linings, e.g. for walls or ceilings composed of covering or lining elements; Sub-structures therefor; Fastening means therefor composed of a plurality of similar covering or lining elements
- E04F13/0889—Coverings or linings, e.g. for walls or ceilings composed of covering or lining elements; Sub-structures therefor; Fastening means therefor composed of a plurality of similar covering or lining elements characterised by the joints between neighbouring elements, e.g. with joint fillings or with tongue and groove connections
- E04F13/0894—Coverings or linings, e.g. for walls or ceilings composed of covering or lining elements; Sub-structures therefor; Fastening means therefor composed of a plurality of similar covering or lining elements characterised by the joints between neighbouring elements, e.g. with joint fillings or with tongue and groove connections with tongue and groove connections
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04F—FINISHING WORK ON BUILDINGS, e.g. STAIRS, FLOORS
- E04F13/00—Coverings or linings, e.g. for walls or ceilings
- E04F13/07—Coverings or linings, e.g. for walls or ceilings composed of covering or lining elements; Sub-structures therefor; Fastening means therefor
- E04F13/08—Coverings or linings, e.g. for walls or ceilings composed of covering or lining elements; Sub-structures therefor; Fastening means therefor composed of a plurality of similar covering or lining elements
- E04F13/0889—Coverings or linings, e.g. for walls or ceilings composed of covering or lining elements; Sub-structures therefor; Fastening means therefor composed of a plurality of similar covering or lining elements characterised by the joints between neighbouring elements, e.g. with joint fillings or with tongue and groove connections
- E04F13/0898—Coverings or linings, e.g. for walls or ceilings composed of covering or lining elements; Sub-structures therefor; Fastening means therefor composed of a plurality of similar covering or lining elements characterised by the joints between neighbouring elements, e.g. with joint fillings or with tongue and groove connections with sealing elements between coverings
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04F—FINISHING WORK ON BUILDINGS, e.g. STAIRS, FLOORS
- E04F2290/00—Specially adapted covering, lining or flooring elements not otherwise provided for
- E04F2290/04—Specially adapted covering, lining or flooring elements not otherwise provided for for insulation or surface protection, e.g. against noise, impact or fire
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- Engineering & Computer Science (AREA)
- Architecture (AREA)
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Abstract
The invention relates to a waterproof structure of an external wall panel with water seepage drainage plate joints and a construction method, wherein a multi-stage waterproof design is adopted, weather-resistant glue at the outer side of the plate joints is used as a first waterproof layer, grooves and grooves arranged at the upper and lower parts of a PC wall panel, transverse sealing rubber strips and rubber pads at the grooves of the grooves at the side ends of the PC wall panel are used as second waterproof layers of the transverse plate joints, vertical sealing rubber strips at the grooves at the side ends of the PC wall panel are used as second waterproof layers of vertical plate joints, in order to drain the water seepage of the vertical plate joints and prevent the water seepage into a lower layer, a flow guide cavity formed by the vertical sealing rubber strips and the grooves at the side ends of the PC wall panel can drain the water seepage of the layer of the wall panel to the bottom of the layer of the panel, and as the flow guide rubber pads are laid at the cross-shaped plate joints at the bottom of the layer, hydrophobic sponge blocks are fixed on the flow guide rubber pads and can play roles of water collection, drainage and external air flow separation, the water seepage of the drainage can be discharged outwards, so that the water accumulation in the plate seam is avoided.
Description
Technical Field
The invention relates to the field of fabricated buildings, in particular to an external wallboard waterproof structure with drainage plate seams for water seepage and a construction method.
Background
The PC (Precast Concrete) external wall panel is a common prefabricated external wall panel in an assembly type building, and external wall panel units are usually prefabricated in a factory, and when the assembly is assembled on site, a plurality of external wall panel units are usually spliced and fixed on the external wall surface of the building, and the splicing positions between adjacent external wall panels form transverse panel seams and vertical panel seams, so that water seepage at the panel seams during raining is avoided, and waterproof treatment needs to be performed on gaps between the panel seams.
The common waterproof treatment mode of the plate joint is to arrange a sealing strip at the plate joint and fill weather-resistant glue outside the sealing strip, and although the waterproof structure can also play a waterproof role, the weather-resistant glue and the sealing strip can age and crack gradually along with the increase of the service life of a building, so that the waterproof effect is lost. Although there are some current waterproof constructions and have increased the waterproof structure of multilayer in board seam department, adopt multistage waterproof design to solve the problem that first waterproof construction became invalid, these multistage waterproof constructions need set up the flange department at outer wall panel, have certain requirement to the flange thickness, can't hold if too thin. In addition, the design to the waterproof structure of crack among the prior art often neglects the crack department easily in case the infiltration enters and causes the ponding problem easily, and current waterproof structure lacks the consideration of drainage and drainage to the infiltration. The invention patent with publication number CN204418441U discloses a waterproof structure for joints of precast concrete externally-hung wall panels, wherein waterproof grooves and tongues are arranged on the upper and lower plate edges of the externally-hung wall panels, water guide grooves are arranged on the plate edges of the externally-hung wall panels, water guide channels are formed after the adjacent externally-hung wall panels are spliced, and water guide pipes are arranged in the water guide channels to guide out seepage water. The waterproof structure is inconvenient to design and construct, the drainage effect is limited, not all seepage water can be gathered into the aqueduct and drained by drainage, and the practicability of the technical scheme is not good enough.
Disclosure of Invention
The invention discloses an external wall panel waterproof structure with water seepage of drainage plate seams and a construction method.
In order to achieve the purpose, the technical scheme adopted by the invention is as follows:
a waterproof structure of an external wallboard with water seepage of a drainage board seam comprises a PC wallboard unit, a transverse board seam and a vertical board seam, wherein the transverse board seam and the vertical board seam are formed after the PC wallboard units are spliced, and a cross board seam is formed at the intersection of the transverse board seam and the vertical board seam; the method is characterized in that: the top surface and the bottom surface of the PC wallboard unit are respectively provided with a tongue-and-groove which can be mutually butted, a transverse sealing rubber strip is fixed on a convex part of the tongue-and-groove on the top surface, a rubber pad is fixed on a concave part of the tongue-and-groove on the bottom surface, and two side end surfaces of the PC wallboard unit are provided with grooves which are communicated up and down; grooves on the side end faces of the PC wallboard units on two sides of the vertical plate seam are opposite to form a containing cavity, a vertical sealing rubber strip is arranged in the containing cavity, weather-resistant glue is filled outside the vertical sealing rubber strip, and weather-resistant glue is filled outside the transverse sealing rubber strip in the transverse plate seam; and a diversion rubber mat is laid on the transverse sealing rubber strips at the cross-shaped board seam, covers the gap between the transverse sealing rubber strips on the adjacent PC wall board units at the lower layer, covers the transverse sealing rubber strips in the width direction and covers the concave parts of the tongue-and-groove parts of the top surfaces of the PC wall board units, the concave parts of the tongue-and-groove parts of the top surfaces and the convex parts of the tongue-and-groove parts are inclined planes inclined towards the outdoor side, a hydrophobic sponge block is fixed on the top surface of the concave part of the tongue-and-groove part of the top surface, which is laid by the diversion rubber mat, and part of the hydrophobic sponge block at the cross-shaped board seam is exposed outside.
Furthermore, a first inclined plane inclined towards the concave part of the top surface tongue-and-groove is arranged on the convex part of the top surface tongue-and-groove, and the transverse sealing rubber strip is fixed on the first inclined plane; the concave part of the bottom groove is provided with a second inclined plane inclining to the convex part of the bottom groove, and the rubber pad is fixed on the second inclined plane.
Further, the transverse sealing rubber strip comprises a main body parallel to the first inclined plane and a vertical extending part, the vertical extending part is integrally connected with the main body, a through cavity structure is arranged in the main body, the main body is attached to the first inclined plane, and the vertical extending part is attached to a transition vertical side wall of a convex part and a concave part of the top surface tongue-and-groove; one part of the rubber pad is attached to the second inclined plane, and the other part of the rubber pad is attached to the transitional vertical side wall of the concave part and the convex part of the bottom surface tongue-and-groove.
Further, the length of the transverse sealing rubber strip is the same as the width of the PC wallboard unit, the length of the rubber pad is the same as the width of the PC wallboard unit, and the length of the vertical sealing rubber strip is the same as the height of the PC wallboard unit.
Furthermore, the middle part of the vertical sealing rubber strip is a cavity which is communicated up and down, a plurality of partition ribs extending outwards are arranged on the opposite side faces of the vertical sealing rubber strip, the partition ribs face the grooves on the side end faces of the PC wallboard units, and the adjacent partition ribs on the same side and the grooves on the same side form a flow guide cavity together.
Furthermore, the groove on the side end face of the PC wallboard unit is provided with a concave part corresponding to the tongue-and-groove on the top surface.
Furthermore, a foam rod is arranged on the outer side of the transverse sealing rubber strip in the transverse plate seam, and weather-resistant rubber is filled on the outer side of the foam rod.
Furthermore, the thickness of water conservancy diversion cushion and rubber pad is 1mm, and the length of water conservancy diversion cushion is 200 mm.
The invention also discloses a construction method of the waterproof structure, which is realized by adopting the following technical scheme:
a construction method of an external wall panel with drainage plate seams for water seepage comprises the following steps:
the side end faces of a plurality of PC wallboard units are butted side by side to form a lower-layer wallboard, grooves on the side end faces are opposite to form an accommodating cavity during butt joint, and a vertical sealing rubber strip is arranged in the accommodating cavity;
fixing a transverse sealing rubber strip at the rabbet of the top surface of each PC wallboard unit of the lower-layer wallboard, and fixing a rubber pad at the rabbet of the bottom surface of each PC wallboard unit of the upper-layer wallboard;
laying a diversion rubber mat at each cross slab joint on the top surface of the lower-layer wallboard, covering the vertical slab joints of the adjacent PC wallboard units by the diversion rubber mats, covering the width direction of the transverse sealing rubber strips and the rabbet of the top surface, and fixing a hydrophobic sponge block at one end of the diversion rubber mats close to the outdoor side;
and (3) contacting a rubber pad at the rabbet of the bottom surface of each PC wallboard unit forming the upper layer wallboard with a transverse sealing rubber strip at the rabbet of the top surface of each PC wallboard unit in the lower layer wallboard, and filling weather-resistant glue on the outdoor sides of the transverse plate seams and the vertical plate seams to expose the hydrophobic sponge at the cross plate seams.
And further, before the weather-resistant glue is filled in the transverse plate seam, the foam rod is firstly put in and then filled.
According to the invention, multi-stage protection is adopted for waterproof treatment of plate joints, weather-resistant glue outside the plate joint chamber plays a first-stage waterproof role, even if the weather-resistant glue cracks and seeps water, the drop of the raised part and the depressed part of the rabbet can play a waterproof role for the transverse plate joint, and the transverse sealing rubber strip and the rubber pad fixed at the rabbet are used as another waterproof protective layer, so that not only can the further infiltration of rainwater be prevented, but also the indoor and outdoor air tightness is ensured; for the vertical plate seam, the vertical sealing rubber strip serving as a second-level waterproof layer also increases the overall waterproof effect. In consideration of drainage of water seepage of vertical plate joints and prevention of continuous seepage of water into lower plate joints, the water seepage cavity formed by the vertical sealing rubber strips and the grooves in the side faces of the PC wallboard can drain seepage of the wallboard to the bottom of the board joints, the water seepage caused by the drainage can be prevented from flowing into the lower plate joints due to the fact that the water diversion rubber pads are laid at the cross-shaped plate joints at the bottom of the board, and the drainage rubber pads are fixed on the water diversion rubber pads, the drainage rubber pads can play a role in water collection, drainage and external air flow partition, and the drained seepage water can be discharged outwards, so that water accumulation in the plate joints is avoided.
Drawings
FIG. 1 is a schematic view of a splice joint structure of an exterior wall panel according to an embodiment of the present invention;
FIG. 2 is a vertical sectional view of an exterior wall panel according to an embodiment of the present invention;
FIG. 3 is a cross-sectional view taken along line A-A of FIG. 1;
FIG. 4 is a cross-sectional view taken along line B-B of FIG. 1;
FIG. 5 is an enlarged view of a portion of the panel gap of FIG. 4;
FIG. 6 is a cross-sectional view taken along line C-C of FIG. 1;
fig. 7 is a cross-sectional view taken along line D-D in fig. 1.
Detailed Description
The technical solution 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.
The embodiment discloses an externally-hung wallboard waterproof structure with drainage plate seam infiltration, mainly forms a plurality of PC wallboard units 1 after the level or splice from top to bottom, and figure 1 shows that four PC wallboard units 1a, 1b, 1c, 1d splice the condition that forms horizontal plate seam 3 and vertical plate seam 2, and horizontal plate seam 3 and vertical plate seam 2 intersection form the cross plate seam. In general, the joints of the panels are filled with weather-resistant adhesive, but the weather-resistant adhesive has a risk of cracking when the panels are corroded by wind and rain, and therefore, the water-proofing treatment needs to be enhanced.
As shown in fig. 2, the single PC wall board unit 1 in this embodiment has the same structure, and the top surface and the bottom surface of the PC wall board unit 1 are respectively provided with grooves and tongues capable of being butted with each other in the direction shown in the drawing, for convenience of description, the top surface groove and tongue are provided at the top, the bottom surface groove and tongue are provided at the bottom, the top surface groove and tongue are equally divided into a convex portion 6a and a concave portion 6b, and for the top surface groove and tongue, when the PC wall board is installed, the right side of the concave portion 6b of the top surface groove and tongue is outdoors. Considering that once the weather-resistant adhesive on the outermost layer cracks and seeps water, in order to avoid the seeping water from entering the indoor side, the convex part 6a of the top surface groove is provided with a first inclined surface inclined towards the concave part 6b of the top surface groove, and the transverse sealing adhesive tape 7 is adhered and fixed on the first inclined surface. The PC wall panel unit 1 is placed vertically, with the front-rear direction defined as the thickness direction, the left-right direction defined as the width direction, and the up-down direction defined as the height direction. The length of the transverse sealing rubber strip 7 is the same as the width of the PC wallboard unit 1, the transverse sealing rubber strip 7 is divided into a main body 7a parallel to the first inclined plane and a vertical extension part 7c, the vertical extension part 7c is integrally connected with the main body 7a, a through cavity structure 7b is formed inside the main body 7a, the bottom of the main body 7a is attached to the first inclined plane, and the vertical extension part 7c is attached to the transition vertical side wall of the convex part 6a and the concave part 6b of the top surface rabbet. A second inclined plane inclined towards the convex part of the bottom groove is arranged on the concave part of the bottom groove, a rubber pad 8 with the thickness of 1mm is fixedly bonded on the second inclined plane, the length of the rubber pad 8 is the same as the width of the PC wallboard unit 1, one part of the rubber pad 8 is fixedly bonded on the second inclined plane, and the other part is fixedly bonded on the transitional vertical side wall of the concave part and the convex part of the bottom groove. And the concave part 6b of the tongue-and-groove on the top surface and the convex part of the tongue-and-groove on the bottom surface are inclined planes which are inclined towards the outdoor side, so that outward drainage of seepage water is facilitated.
The cross section structure of the transverse plate seam 3 (non-cross plate seam) formed by splicing the wallboards 1a and 1c up and down is shown in figure 3, and the rubber gasket 8 at the rabbet of the bottom surface of the wallboard 1a in the transverse plate seam 3 is just closely attached to the transverse sealing rubber strip 7 at the rabbet of the top surface of the wallboard 1c, so that water seepage can be firmly blocked outside. And a gap between the convex part of the rabbet on the bottom surface 1a and the concave part 6b on the top surface 1c is plugged with a foam rod 9, and then is filled with weather-resistant glue 10.
The cross-section structure of the vertical board seam 2 (non-cross board seam) formed after the left and right wallboards 1a and 1b are spliced is shown in fig. 6, grooves 13 penetrating up and down are formed in the left and right side end faces of each PC wallboard unit 1, the length of each groove 13 is the same as the height of each PC wallboard unit 1, after the wallboards 1a and 1b are spliced, the grooves 13 are just opposite to each other to form a containing cavity, vertical sealing rubber strips 11 are arranged in the containing cavities, the length of each vertical sealing rubber strip 11 is the same as the height of each PC wallboard unit 1, and weather-resistant rubber 10 is filled outside each vertical sealing rubber strip 11. Considering drainage of water seepage once the vertical plate seam 2 seeps water, a flow guide cavity 11b capable of conducting drainage is specially designed in the vertical sealing rubber strip 11 in the embodiment, namely the vertical sealing rubber strip 11 is structurally characterized in that: the middle part of the vertical sealing rubber strip 11 is a cavity which is through from top to bottom, so that internal and external air flows can be blocked, a plurality of partition ribs 11a which extend to the outside are respectively arranged on the left and right opposite side surfaces of the vertical sealing rubber strip 11, the partition ribs 11a face the groove 13 on the side end surface of the PC wallboard unit 1, the adjacent partition ribs 11a which are positioned on the same side and the groove 13 on the same side form a flow guide cavity 11b which is through from top to bottom, the water seepage permeating into the vertical plate seam 2 can flow to the bottom of the plate seam of the wallboard on the layer along the flow guide cavity 11b, so that the water seepage guide cavity is favorable for guiding the drainage of the water seepage, and the flow guide cavity 11b has excellent air tightness.
For the cross slab joint formed at the intersection of the transverse slab joints 3 and the vertical slab joints 2, a waterproof key area is formed, the waterproof treatment of the area is shown by combining fig. 4, fig. 5 and fig. 7, a layer of diversion rubber mat 12 with the thickness of 1mm is firstly paved on the transverse sealing rubber strips 7 at the cross slab joints, the length of the diversion rubber mat 12 in the left-right direction is 200mm, the diversion rubber mat 12 covers the gap between the transverse sealing rubber strips 7 on the adjacent PC wallboard units 1 at the lower layer, and the diversion rubber mat 12 also just covers the top of the vertical sealing rubber strip 11 on the wallboard at the lower layer, so that the water seepage drained from the vertical slab joints 2 at the upper layer and the water seepage in the transverse slab joints 3 at the lower layer are prevented from continuing to flow downwards. The diversion rubber mat 12 is laid along the width of the wall board in the thickness direction to ensure that the transverse sealing rubber strip 7 is covered and covered on the concave part 6b of the rabbet on the top surface of the lower PC wall board unit 1 in the width direction. In order to discharge the seepage water permeating into the board seams, the top surfaces of the diversion rubber mats 12 paved on the groove and groove concave parts 6b of the top surfaces are fixedly bonded with the hydrophobic sponge blocks 5, and the middle parts of the hydrophobic sponge blocks 5 at the cross board seams are exposed outside. The hydrophobic sponge block 5 is subjected to hydrophobic modification treatment, has the functions of water collection and drainage, is provided with a plurality of air holes inside, and also has the function of isolating external air flow. In order to ensure good drainage and drainage effects, the transverse sealing rubber strips 7 and the vertical sealing rubber strips 11 are not in the same horizontal plane, namely, the grooves 13 on the side end faces of the PC wallboard units 1 are provided with the concave parts 6b corresponding to the grooves and tongues of the top surfaces, so that the vertical sealing rubber strips 11 are closer to the outside, the water seepage in the water diversion cavities 11b at the two sides of the vertical sealing rubber strips 11 extends along the cavities and downwards and finally flows onto the hydrophobic sponge blocks 5, and the water seepage in the transverse plate seams 3 of the layer can also converge into the hydrophobic sponge blocks 5. Because the hydrophobic sponge block 5 is arranged outside the transverse sealing rubber strip 7, and the hydrophobic sponge block 5 can cut off outdoor air flow, the water seepage is difficult to flow backwards, thereby ensuring that the waterproof structure can smoothly drain water in an organized way when the indoor and outdoor air pressure is equivalent, and the water seepage can be prevented from flowing backwards when the outdoor air pressure is higher.
The concrete construction method of the waterproof structure comprises the following steps: the side end faces of a plurality of PC wallboard units are butted side by side to form a lower-layer wallboard, grooves on the side end faces are opposite to form an accommodating cavity during butt joint, and a vertical sealing rubber strip is arranged in the accommodating cavity; fixing a transverse sealing rubber strip at the rabbet of the top surface of each PC wallboard unit of the lower-layer wallboard, and fixing a rubber pad at the rabbet of the bottom surface of each PC wallboard unit of the upper-layer wallboard; laying a diversion rubber mat at each cross slab joint on the top surface of the lower-layer wallboard, covering the vertical slab joints of the adjacent PC wallboard units by the diversion rubber mats, covering the width direction of the transverse sealing rubber strips and the rabbet of the top surface, and fixing a hydrophobic sponge block at one end of the diversion rubber mats close to the outdoor side; the rubber pad at the rabbet of the bottom surface of each PC wallboard unit forming the upper layer wallboard is contacted with the transverse sealing rubber strip at the rabbet of the top surface of each PC wallboard unit in the lower layer wallboard, weather-resistant glue is filled outside the transverse plate seam and the vertical plate seam, so that the hydrophobic sponge at the cross plate seam is exposed outside, and before the weather-resistant glue is filled in the transverse plate seam, a foam rod is firstly put in and then filled.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (10)
1. A waterproof structure of an external wallboard with water seepage of a drainage board seam comprises a PC wallboard unit, a transverse board seam and a vertical board seam, wherein the transverse board seam and the vertical board seam are formed after the PC wallboard units are spliced, and a cross board seam is formed at the intersection of the transverse board seam and the vertical board seam; the method is characterized in that: the top surface and the bottom surface of the PC wallboard unit are respectively provided with a tongue-and-groove which can be mutually butted, a transverse sealing rubber strip is fixed on a convex part of the tongue-and-groove on the top surface, a rubber pad is fixed on a concave part of the tongue-and-groove on the bottom surface, and two side end surfaces of the PC wallboard unit are provided with grooves which are communicated up and down; grooves on the side end faces of the PC wallboard units on two sides of the vertical plate seam are opposite to form a containing cavity, a vertical sealing rubber strip is arranged in the containing cavity, weather-resistant glue is filled outside the vertical sealing rubber strip, and weather-resistant glue is filled outside the transverse sealing rubber strip in the transverse plate seam; and a diversion rubber mat is laid on the transverse sealing rubber strips at the cross-shaped board seam, covers the gap between the transverse sealing rubber strips on the adjacent PC wall board units at the lower layer, covers the transverse sealing rubber strips in the width direction and covers the concave parts of the tongue-and-groove parts of the top surfaces of the PC wall board units, the concave parts of the tongue-and-groove parts of the top surfaces and the convex parts of the tongue-and-groove parts are inclined planes inclined towards the outdoor side, a hydrophobic sponge block is fixed on the top surface of the concave part of the tongue-and-groove part of the top surface, which is laid by the diversion rubber mat, and part of the hydrophobic sponge block at the cross-shaped board seam is exposed outside.
2. The board seam waterproof construction of the PC outer wall panel according to claim 1, characterized in that: the convex part of the top surface rabbet is provided with a first inclined surface inclined towards the concave part of the top surface rabbet, and the transverse sealing rubber strip is fixed on the first inclined surface; the concave part of the bottom groove is provided with a second inclined plane inclining to the convex part of the bottom groove, and the rubber pad is fixed on the second inclined plane.
3. The board seam waterproof construction of the PC outer wall panel according to claim 2, characterized in that: the transverse sealing rubber strip comprises a main body parallel to the first inclined plane and a vertical extending part, the vertical extending part is integrally connected with the main body, a through cavity structure is arranged in the main body, the main body is attached to the first inclined plane, and the vertical extending part is attached to the transition vertical side wall of the convex part and the concave part of the top surface tongue-and-groove; one part of the rubber pad is attached to the second inclined plane, and the other part of the rubber pad is attached to the transitional vertical side wall of the concave part and the convex part of the bottom surface tongue-and-groove.
4. The board seam waterproof construction of the PC outer wall panel according to claim 1, characterized in that: the length of the transverse sealing rubber strip is the same as the width of the PC wallboard unit, the length of the rubber pad is the same as the width of the PC wallboard unit, and the length of the vertical sealing rubber strip is the same as the height of the PC wallboard unit.
5. The board seam waterproof construction of the PC outer wall panel according to claim 1, characterized in that: the middle part of the vertical sealing rubber strip is a cavity which is communicated up and down, a plurality of partition ribs extending outwards are arranged on the opposite side faces of the vertical sealing rubber strip, the partition ribs face the grooves on the side end faces of the PC wallboard units, and the adjacent partition ribs on the same side and the grooves on the same side form a flow guide cavity together.
6. The board seam waterproof construction of the PC outer wall panel according to claim 1, characterized in that: and the groove on the side end face of the PC wallboard unit is provided with a concave part corresponding to the tongue-and-groove on the top surface.
7. The board seam waterproof construction of the PC outer wall panel according to claim 1, characterized in that: and a foam rod is arranged on the outer side of the transverse sealing rubber strip in the transverse plate seam, and weather-resistant rubber is filled on the outer side of the foam rod.
8. The board seam waterproof construction of the PC outer wall panel according to claim 1, characterized in that: the thickness of water conservancy diversion cushion and rubber pad is 1mm, and the length of water conservancy diversion cushion is 200 mm.
9. A construction method of an external wall panel with drainage plate seam seepage water is characterized by comprising the following steps:
the side end faces of a plurality of PC wallboard units are butted side by side to form a lower-layer wallboard, grooves on the side end faces are opposite to form an accommodating cavity during butt joint, and a vertical sealing rubber strip is arranged in the accommodating cavity;
fixing a transverse sealing rubber strip at the rabbet of the top surface of each PC wallboard unit of the lower-layer wallboard, and fixing a rubber pad at the rabbet of the bottom surface of each PC wallboard unit of the upper-layer wallboard;
laying a diversion rubber mat at each cross slab joint on the top surface of the lower-layer wallboard, covering the vertical slab joints of the adjacent PC wallboard units by the diversion rubber mats, covering the width direction of the transverse sealing rubber strips and the rabbet of the top surface, and fixing a hydrophobic sponge block at one end of the diversion rubber mats close to the outdoor side;
and (3) contacting a rubber pad at the rabbet of the bottom surface of each PC wallboard unit forming the upper layer wallboard with a transverse sealing rubber strip at the rabbet of the top surface of each PC wallboard unit in the lower layer wallboard, and filling weather-resistant glue on the outdoor sides of the transverse plate seams and the vertical plate seams to expose the hydrophobic sponge at the cross plate seams.
10. The construction method of the externally hung wall panel with the function of draining water seepage of the board seams according to claim 9, is characterized in that: before the weather-resistant glue is filled in the transverse plate seam, the foam rod is firstly put in and then filled.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111126486.XA CN113846815B (en) | 2021-09-26 | 2021-09-26 | External wallboard waterproof structure with drainage plate seam water seepage function and construction method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111126486.XA CN113846815B (en) | 2021-09-26 | 2021-09-26 | External wallboard waterproof structure with drainage plate seam water seepage function and construction method |
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| Publication Number | Publication Date |
|---|---|
| CN113846815A true CN113846815A (en) | 2021-12-28 |
| CN113846815B CN113846815B (en) | 2023-01-03 |
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| CN202111126486.XA Active CN113846815B (en) | 2021-09-26 | 2021-09-26 | External wallboard waterproof structure with drainage plate seam water seepage function and construction method |
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