Construction method for assembly type outer wall joint treatment

Abstract

This invention belongs to the field of building construction technology and discloses a construction method for treating the joints of prefabricated exterior walls, including the following steps: S1, setting a longitudinal plumb line and a transverse guide line along the first longitudinal joint and the first transverse joint respectively, and measuring the deviation; S2, sealing the deviation portion of the first longitudinal joint and the first transverse joint; S3, chiseling and cutting seams at the sealed first longitudinal joint and the first transverse joint to form a second transverse joint and a second longitudinal joint; S4, inserting a sealant strip into the second longitudinal joint; S5, inserting a foaming rod into the second transverse joint and the second longitudinal joint; S6, inserting guide tubes diagonally downward at intervals along the extension direction of the second longitudinal joint; S7, sealing the second transverse joint and the second longitudinal joint with sealant. This method can avoid hollow cracking and appearance quality problems caused by uneven joint lines.

Description

Technical Field

[0001] This invention relates to the field of building construction technology, and in particular to a method for treating the joints of prefabricated exterior walls. Background Technology

[0002] Prefabricated construction is now the main direction of green construction, and quality control is a key focus during the construction process. The treatment of joints in prefabricated exterior walls is a crucial aspect of waterproofing and finishing. Poor treatment of these joints can easily lead to water leakage and peeling of the paint, affecting both construction quality and the overall appearance of the exterior.

[0003] If this joint is buried in the exterior wall decoration in the existing technology, it will cause the mortar to not adhere at the joint, resulting in hollow areas; and it is also easy for the lines to be uneven due to the positional deviation of the prefabricated outer leaf panels of the exterior wall, thus causing the appearance quality to fail to meet the requirements. Summary of the Invention

[0004] The purpose of this invention is to provide a construction method for joint treatment of prefabricated exterior walls, which can avoid hollow cracking on the one hand, and avoid appearance quality problems caused by uneven joint lines on the other hand.

[0005] To achieve this objective, the present invention adopts the following technical solution:

[0006] A construction method for treating joints in prefabricated exterior walls, wherein the joints include a first horizontal joint and a first vertical joint, comprising the following steps:

[0007] S1. Set a longitudinal plumb line and a transverse guide line along the first longitudinal joint and the first transverse joint respectively, and measure the deviation between the first longitudinal joint and the longitudinal plumb line and between the first transverse joint and the transverse guide line;

[0008] S2. Seal the portion of the first longitudinal joint that deviates from the longitudinal suspension line and the portion of the first transverse joint that deviates from the transverse through line;

[0009] S3. Cutting seams are made at the first blocked longitudinal joint and the first blocked transverse joint along the extension direction of the longitudinal suspension line and the transverse through line, respectively, so that the transverse cutting seam connects with the first transverse joint to form a second transverse joint, and the longitudinal cutting seam connects with the first longitudinal joint to form a second longitudinal joint.

[0010] S4. Insert the sealing strip into the second longitudinal joint;

[0011] S5. Insert the foaming rod into the second transverse seam and the second longitudinal seam;

[0012] S6. Insert conduits obliquely downward at intervals along the extension direction of the second longitudinal joint, ensuring that the first end of the conduit is obliquely upward and deeply inserted into the second longitudinal joint, and the second end of the conduit is obliquely downward and flush with or protruding from the second longitudinal joint.

[0013] S7. Seal the second transverse joint and the second longitudinal joint with sealant respectively.

[0014] Preferably, step S7 further includes applying an interface agent to the second transverse seam and the second longitudinal seam.

[0015] Preferably, in step S3, it is ensured that the width and depth of the transverse cut seam are the same as those of the first transverse seam, and the width and depth of the longitudinal cut seam are the same as those of the first longitudinal seam.

[0016] Preferably, the sealing strip is interference-fitted with the second longitudinal seam.

[0017] Preferably, the sealing strip includes a first blade, a second blade, and a third blade arranged from top to bottom. The width of the first blade, the second blade, and the third blade is slightly larger than the width of the second longitudinal seam. A coaxial main ridge is provided between the first blade and the second blade, and between the second blade and the third blade.

[0018] Preferably, the side of the first blade away from the main ridge is an arc surface, and the arc surface side of the first blade is far away from the opening of the second longitudinal seam.

[0019] Preferably, the sealing thickness of the sealant is 1cm to 1.5cm.

[0020] Preferably, in step S6, one of the conduits is inserted every three of the prefabricated exterior walls in the vertical direction.

[0021] Preferably, the conduit includes an upper half and a lower half of the same diameter, the upper half being a semi-circular tube and the lower half being a circular tube, the end of the upper half being obliquely upward abutting against the sealing strip, and the notch of the upper half being arranged facing upward.

[0022] Preferably, the conduit is inserted below the intersection of the second transverse joint and the second longitudinal joint, and the conduit is inserted into the second longitudinal joint at a 60° angle to the plane of the prefabricated exterior wall.

[0023] The beneficial effects of this invention are:

[0024] Therefore, the above method can effectively prevent rainwater from entering the second horizontal joint and the second vertical joint through the use of conduits, sealing strips and sealant, thus avoiding hollow cracks. On the other hand, it can also avoid the appearance quality problem of uneven lines at the joint caused by the positional deviation of the prefabricated outer leaf panels of the exterior wall. Attached Figure Description

[0025] Figure 1 This is a schematic diagram of the second transverse joint in the construction method for joint treatment of prefabricated exterior walls of the present invention;

[0026] Figure 2 yes Figure 1 Enlarged view of point A in the middle;

[0027] Figure 3 This is a schematic diagram of the second longitudinal joint in the construction method for joint treatment of prefabricated exterior walls of the present invention;

[0028] Figure 4 yes Figure 3 Enlarged view at point B in the middle;

[0029] Figure 5 This is a schematic diagram of a sealing strip.

[0030] In the picture:

[0031] 1. Second transverse joint; 11. Anti-sill structure; 2. Second longitudinal joint; 3. Sealing strip; 31. First blade; 32. Second blade; 33. Third blade; 34. Main ridge; 4. Foaming rod; 5. Conduit; 6. Sealant; 7. Prefabricated exterior wall. Detailed Implementation

[0032] The present invention will now be described in further detail with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and not intended to limit it. Furthermore, it should be noted that, for ease of description, the accompanying drawings show only the parts relevant to the present invention, and not all of the structures.

[0033] In the description of this invention, unless otherwise explicitly specified and limited, the terms "connected," "linked," and "fixed" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0034] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0035] In the description of this embodiment, the terms "upper," "lower," "left," and "right," etc., refer to the orientation or positional relationship shown in the accompanying drawings. They are used only for ease of description and simplification of operation, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the present invention. In addition, the terms "first" and "second" are used only for distinction in description and have no special meaning.

[0036] like Figure 1-5As shown, this embodiment provides a construction method for joint treatment of prefabricated exterior walls. It is understood that the prefabricated exterior wall 7 is prefabricated with an insulation layer and outer leaf panels at the factory. After splicing, the edges of the outer leaf panels will form a first transverse joint in the horizontal direction and a first longitudinal joint in the vertical direction. The method includes the following steps: S1. Setting a longitudinal plumb line and a transverse guide line along the first longitudinal joint and the first transverse joint respectively. Measuring the horizontal deviation of the first transverse joint using the horizontally set transverse guide line, and measuring the deviation between the first longitudinal joint and the longitudinal plumb line using the vertically set longitudinal plumb line. These steps confirm the straightness of the first transverse joint and the first longitudinal joint. S2. Sealing the portion of the first longitudinal joint that deviates from the longitudinal plumb line and the portion of the first transverse joint that deviates from the transverse guide line. In this embodiment, the portions of the first longitudinal joint and the first transverse joint that deviate more than 1 cm from the longitudinal plumb line and the transverse guide line are sealed using a 1:3 cement mortar. Then, the outer surface layer is leveled. S3. Cut slits are made along the extension directions of the longitudinal plumb line and the transverse guide line at the first sealed longitudinal joint and the first sealed transverse joint, respectively. The transverse slits connect with the first transverse joint to form a second transverse joint 1, and the longitudinal slits connect with the first longitudinal joint to form a second longitudinal joint 2. This ensures that the second transverse joint 1 is horizontal along the transverse guide line and the second longitudinal joint 2 is straight along the vertical longitudinal plumb line, thereby ensuring that the appearance meets the requirements. Furthermore, the width and depth of the transverse slits and the first transverse joint, and the longitudinal slits and the first longitudinal joint are the same to make the connection smoother and avoid differences in appearance, while also preventing the treatment area from being too large during waterproof sealing.

[0037] In addition, such as Figure 3-5As shown, the construction method for treating the joints of the prefabricated exterior wall also includes S4, inserting a sealing strip 3 into the second longitudinal joint 2. By setting the sealing strip 3 in the second longitudinal joint 2, rainwater is prevented from entering the second longitudinal joint 2, thus avoiding hollowness. Specifically, the sealing strip 3 is interference-fitted with the second longitudinal joint 2. For example, the sealing strip 3 includes a first blade 31, a second blade 32, and a third blade 33 arranged from top to bottom. The width of the first blade 31, the second blade 32, and the third blade 33 is slightly larger than the width of the second longitudinal joint 2. A coaxial main ridge 34 is provided between the first blade 31 and the second blade 32, and between the second blade 32 and the third blade 33. The three layers of blades effectively prevent rainwater from entering. In this embodiment, the sealing strip 3 is made of rubber. It is understood that other embodiments may use more or fewer layers of blades, depending on the specific depth of the second longitudinal joint 2. To facilitate the insertion of the sealing strip 3 into the second longitudinal joint 2, the side of the first blade 31 facing away from the main ridge 34 is curved, and the curved side of the first blade 31 extends into the second longitudinal joint 2, thus moving away from the opening of the second longitudinal joint 2. It should be noted that whether or not to install the sealing strip 3 in the first transverse joint depends on the specific circumstances of the first transverse joint, and no specific restrictions are imposed here. In this embodiment, on the one hand, since the first longitudinal joint of the prefabricated exterior wall 7 is a gap 2cm wide and 3cm deep, and generally the depth of the first transverse joint is less than the depth of the first longitudinal joint, it is not advisable to place the sealing strip 3 into the second transverse joint 1; on the other hand, if... Figure 1 As shown, a downwardly sloping anti-sill structure 11 (i.e., a downwardly sloping channel) is usually provided inside the first transverse seam, making it difficult for rainwater to rise. Therefore, in this embodiment, no sealing strip 3 is placed inside the second transverse seam 1. However, it is understood that in other embodiments, if the structure of the first transverse seam allows, a sealing strip 3 can be placed inside the second transverse seam 1 in step S4.

[0038] like Figure 1-4As shown, the construction method for treating the joints of the prefabricated exterior wall also includes S5, inserting foam rods 4 into the second transverse joint 1 and the second longitudinal joint 2. The foam rods 4 located in the second longitudinal joint 2 abut against the sealing strip 3 to further prevent rainwater infiltration. In this embodiment, the foam rods 4 are foamed polyethylene rods. S6, inserting conduits 5 at intervals along the extension direction of the second longitudinal joint 2. The first end of the conduit 5 extends obliquely upward into the second longitudinal joint 2, and the second end of the conduit 5 extends obliquely downward, flush with or protruding from the second longitudinal joint 2. By taking the above measures, it is possible to prevent a large amount of rainwater from entering the second longitudinal joint 2 and to drain the rainwater along the conduits 5. Specifically, a conduit 5 is inserted every three prefabricated exterior walls 7 in the vertical direction. The conduit 5 used here includes an upper half and a lower half of the same diameter. The upper half is a semi-circular tube cut radially, and the lower half is a circular tube, meaning that conduit 5 is cut from a single piece of pipe. The end of the upper half is angled upwards to abut against the sealing strip 3, and the notch of the upper half is positioned upwards to facilitate the collection and drainage of rainwater. More specifically, conduit 5 is inserted below the intersection of the second transverse joint 1 and the second longitudinal joint 2, which can collect some of the rainwater in the second longitudinal joint 2. Furthermore, conduit 5 is inserted into the second longitudinal joint 2 at a 60° angle to the plane of the prefabricated exterior wall 7, thus facilitating the downward flow of rainwater. The construction method for treating the joints of the prefabricated exterior wall also includes S7, sealing the second transverse joint 1 and the second longitudinal joint 2 with sealant 6 respectively. Specifically, step S7 also includes applying an interface agent inside the second transverse joint 1 and the second longitudinal joint 2. The sealing thickness of sealant 6 is typically 1cm to 1.5cm, and the exposed surface is slightly pressed into a curved surface. It should be noted that the sealant 6 serves two purposes: firstly, it provides an outermost seal for the second transverse joint 1 and the second longitudinal joint 2, and secondly, it facilitates subsequent decorative operations. Furthermore, when sealing the second longitudinal joint 2, the sealant 6 must avoid blocking the upper half of the opening of the conduit 5 inserted into the second longitudinal joint 2.

[0039] Therefore, the above method can effectively prevent rainwater from entering the second horizontal joint 1 and the second longitudinal joint 2 through the conduit 5, sealing strip 3 and sealant 6, thus avoiding hollow cracks. On the other hand, it can also avoid the appearance quality problem of uneven lines at the joint caused by the position deviation of the prefabricated outer leaf panel of the exterior wall.

[0040] Obviously, the above embodiments of the present invention are merely examples for clearly illustrating the present invention, and are not intended to limit the implementation of the present invention. Those skilled in the art will be able to make various obvious changes, readjustments, and substitutions without departing from the scope of protection of the present invention. It is neither necessary nor possible to exhaustively describe all embodiments here. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present invention should be included within the scope of protection of the claims of the present invention.

Claims

1. A construction method for treating joints in prefabricated exterior walls, wherein the joints include a first horizontal joint and a first vertical joint, characterized in that, Includes the following steps: S1. Set a longitudinal plumb line and a transverse guide line along the first longitudinal joint and the first transverse joint respectively, and measure the deviation between the first longitudinal joint and the longitudinal plumb line and between the first transverse joint and the transverse guide line; S2. Seal the portion of the first longitudinal joint that deviates from the longitudinal suspension line and the portion of the first transverse joint that deviates from the transverse through line; S3. Cutting seams are made at the first longitudinal joint and the first transverse joint that are blocked, respectively, along the extension direction of the longitudinal suspension line and the transverse through line, so that the transverse cutting seam connects with the first transverse joint to form a second transverse joint (1), and the longitudinal cutting seam connects with the first longitudinal joint to form a second longitudinal joint (2). S4. Insert the sealing strip (3) into the second longitudinal joint (2); S5. Insert the foaming rod (4) into the second transverse seam (1) and the second longitudinal seam (2); S6. Insert conduits (5) at intervals along the extension direction of the second longitudinal joint (2), ensuring that the first end of the conduit (5) extends obliquely upward into the second longitudinal joint (2), and the second end of the conduit (5) extends obliquely downward to be flush with or protrude from the second longitudinal joint (2); S7. Seal the second transverse joint (1) and the second longitudinal joint (2) with sealant (6).

2. The construction method for treating joints in prefabricated exterior walls according to claim 1, characterized in that, Step S7 also includes applying an interface agent to the second transverse seam (1) and the second longitudinal seam (2).

3. The construction method for treating joints in prefabricated exterior walls according to claim 1, characterized in that, In step S3, ensure that the width and depth of the transverse cut seam are the same as the first transverse seam, and the width and depth of the longitudinal cut seam are the same as the first longitudinal seam.

4. The construction method for treating joints in prefabricated exterior walls according to claim 1, characterized in that, The sealing strip (3) is interference-fitted with the second longitudinal seam (2).

5. The construction method for treating joints in prefabricated exterior walls according to claim 4, characterized in that, The sealing strip (3) includes a first blade (31), a second blade (32) and a third blade (33) arranged from top to bottom. The width of the first blade (31), the second blade (32) and the third blade (33) is slightly larger than the width of the second longitudinal seam (2). A coaxial main ridge (34) is provided between the first blade (31) and the second blade (32) and between the second blade (32) and the third blade (33).

6. The construction method for treating joints in prefabricated exterior walls according to claim 5, characterized in that, The side of the first blade (31) away from the main ridge (34) is an arc surface, and the arc surface side of the first blade (31) is far away from the opening of the second longitudinal seam (2).

7. The construction method for treating joints in prefabricated exterior walls according to claim 1, characterized in that, The sealing thickness of the sealant (6) is 1cm to 1.5cm.

8. The construction method for treating joints in prefabricated exterior walls according to claim 1, characterized in that, In step S6, a conduit (5) is inserted every three prefabricated exterior walls (7) in the vertical direction.

9. The construction method for treating joints in prefabricated exterior walls according to claim 1, characterized in that, The conduit (5) includes an upper half and a lower half of the same diameter. The upper half is a semi-circular tube, and the lower half is a circular tube. The end of the upper half is obliquely upward abutting the sealing strip (3), and the notch of the upper half is set upward.

10. The construction method for treating joints in prefabricated exterior walls according to claim 9, characterized in that, The conduit (5) is inserted below the junction of the second transverse joint (1) and the second longitudinal joint (2), and the conduit (5) is inserted into the second longitudinal joint (2) at a 60° angle to the plane of the prefabricated exterior wall (7).

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