A construction method for waterproof joints at the intersection of positive and inverted roofing

Abstract

The present invention relates to a waterproof joint construction method at the junction of positive and inverted roofs, which comprises the following steps: constructing a water retaining sill at the pre-junction of the positive roof and the inverted roof; after the water retaining sill reaches the designed strength, applying a coating on the side of the water retaining sill close to the positive roof and the base course of the positive roof; constructing an arc chamfer structure on the side of the water retaining sill close to the inverted roof; constructing the structural layer of the positive roof; after the structural layer of the positive roof reaches the designed strength, cleaning the base course of the inverted roof and the upper surface of the structural layer of the positive roof, and applying primer; after the primer dries, laying waterproof coiled material; and constructing the surface structure of the roof on the waterproof coiled material. This method effectively blocks the drainage channel at the junction of the positive and inverted roofs, reduces the risk of leakage of the inverted roof in the future, and is conducive to the smooth progress of the later project.

Description

Technical Field

[0001] The present invention relates to the technical field of building construction, and particularly relates to a construction method for waterproof joints at the junction of positive and inverted roofs. Background Art

[0002] The problem of roof leakage in buildings has always been a key and difficult problem in waterproof engineering. At the same time, in order to meet different thermal insulation design requirements, positive and inverted roof practices have emerged. However, when these two practices meet at the same roof junction, how to close the joint to achieve the best waterproof effect has always troubled everyone. The traditional method is as follows: at the section of the completed positive roof, a circular arc chamfer is made with mortar. After the mortar reaches its strength, two layers of waterproof coiled materials of the inverted roof are respectively lapped with the positive roof to meet the waterproof requirements. However, if there is free water or water vapor in the base layer of the positive roof, as time goes by, when backfilling the upper part and carrying out other load construction, the water will be squeezed into the lower part of the inverted waterproof base layer, affecting the waterproof effect and increasing the risk of leakage, which is not conducive to the smooth progress of the project. Summary of the Invention

[0003] In order to solve the problem that in the existing construction method at the junction of positive and inverted roofs, the free water or water vapor in the base layer of the positive roof will flow to the base layer of the inverted roof under the action of load, resulting in easy leakage, the technical solution adopted by the present invention is: a construction method for waterproof joints at the junction of positive and inverted roofs, including the following steps:

[0004] Construct a water retaining sill at the pre-junction of the positive roof and the inverted roof;

[0005] After the water retaining sill reaches the designed strength, apply a coating on the side of the water retaining sill close to the positive roof and the base layer of the positive roof;

[0006] Construct an inner concave circular arc chamfer structure on the side of the water retaining sill close to the inverted roof;

[0007] Construct the structural layer of the positive roof;

[0008] After the structural layer of the positive roof reaches the designed strength, clean the upper surface of the base layer of the inverted roof and the structural layer of the positive roof, and apply cold primer;

[0009] After the cold primer dries, lay waterproof coiled materials;

[0010] Construct the surface structure of the roof on the waterproof coiled materials.

[0011] Further improved, the circular arc chamfer structure is an inner concave circular arc chamfer structure, and the circular arc chamfer structure is made of waterproof mortar.

[0012] Further improved, the waterproof coiled materials are two layers.

[0013] Further improvement includes the following steps:

[0014] Carry out the first water storage test after the first layer of waterproof membrane is laid;

[0015] After confirming that there is no leakage, lay the second layer of waterproof membrane;

[0016] Conduct a second water storage test;

[0017] After confirming that there is no leakage, construct the roof surface structure.

[0018] Further improvement includes the following steps:

[0019] After the coating film is dry, polyurethane is used to seal the inner corners where the upright roof and the water retaining sill intersect.

[0020] Further improvement includes the following steps:

[0021] After the arc chamfer structure reaches the designed strength, polyurethane is used to seal the inner corner where the chamfer intersects with the inverted roof.

[0022] Further improvement includes the following steps:

[0023] Before carrying out the water retaining sill construction, clean the upright roof base and remove the accumulated dust.

[0024] Further improvement includes the following steps:

[0025] There must be no hollows during the laying of waterproof membranes, and the long sides of the waterproof membranes must be staggered by 1 / 3-1 / 2 of the distance between the upper and lower sections, and the short sides must be staggered by 1.5 meters on the same layer.

[0026] A further improvement is that the coating film is any one of a polymer cement-based waterproof coating or a polyurethane waterproof coating.

[0027] A further improvement is that the positive corner of the side where the water retaining sill meets the arc chamfered structure is in an outwardly convex arc shape.

[0028] The beneficial effects of the present invention are:

[0029] The waterproof node construction method at the junction of the upright and inverted roofs provided by the present invention is simple to operate, easy for workers to learn and get started, there is no cross-operation of multiple types of work, and the construction efficiency is high; the material acquisition is simple and economical, and the relevant materials and equipment are equivalent to general waterproof construction. At the same time, the process effectively blocks the drainage channel at the junction of the upright and inverted roofs, reduces the risk of inverted roof leakage in the future, and is conducive to the smooth advancement of later projects; this process has no vibration and pollution to the surrounding environment. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] The present invention will be further described below in conjunction with the accompanying drawings and embodiments.

[0031] Figure 1 It is a schematic diagram of the roof structure for waterproof construction at the junction of the positive and inverted roofs of the present invention. Specific embodiments

[0032] The present invention will now be described in further detail in conjunction with the accompanying drawings. These drawings are all simplified schematic diagrams, only illustrating the basic structure of the present invention in a schematic manner, so they only show the components related to the present invention.

[0033] In the description of the invention, it should be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc. indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, so it cannot be understood as a limitation of the invention.

[0034] In addition, the terms "first" and "second" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include one or more of such features. In the description of the invention, "a plurality" means two or more unless otherwise specifically defined.

[0035] In the invention, unless otherwise clearly defined and limited, the terms "installed", "connected", "connected", "fixed", etc. should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the invention can be understood according to specific circumstances.

[0036] The present invention provides a construction method for waterproof joints at the junction of positive and inverted roofs, including the following steps:

[0037] First, construct a water retaining sill 1 at the pre-junction of the positive roof and the inverted roof on the roof 6;

[0038] After the water retaining sill 1 reaches the designed strength, apply a coating 9 on the side of the water retaining sill 1 close to the positive roof and the base layer of the positive roof;

[0039] Construct an arc chamfer structure 2 on the side of the water retaining sill 1 close to the inverted roof;

[0040] Construct the structural layer 8 of the direct roofing;

[0041] After the structural layer 8 of the direct roofing (in this embodiment, specifically the leveling layer of the structural layer 8 of the direct roofing) reaches the designed strength, clean the base layer of the inverted roof and the upper surface of the structural layer of the direct roofing, and apply cold primer 7;

[0042] After the cold primer 7 dries, lay the waterproof coiled material 3;

[0043] Construct the surface structure 5 of the roof on the waterproof coiled material 3 (in this embodiment, the surface structure 5 of the roof includes: isolation layer, protection layer).

[0044] Among them, the structural layer 8 of the direct roofing successively includes from bottom to top: insulation layer, slope finding layer, leveling layer.

[0045] Further improved, the arc chamfer structure 2 is an inner concave arc chamfer structure, and the arc chamfer structure 2 is made of waterproof mortar.

[0046] Further improved, the waterproof coiled material 3 is two layers.

[0047] Further improved, it includes the following steps:

[0048] After the first layer of waterproof coiled material is laid, conduct the first water storage test;

[0049] After confirming no leakage, lay the second layer of waterproof coiled material;

[0050] Conduct the second water storage test;

[0051] After confirming no leakage, construct the surface structure of the roof.

[0052] Further improved, it includes the following steps:

[0053] After the coating dries, use polyurethane 4 to close the inner corner where the direct roofing intersects with the water retaining sill.

[0054] Further improved, it includes the following steps:

[0055] After the arc chamfer structure reaches the designed strength, use polyurethane 4 to close the inner corner where the chamfer intersects with the inverted roof.

[0056] Further improved, it includes the following steps:

[0057] Before constructing the water retaining sill, clean the base layer of the direct roofing and remove the accumulated dust.

[0058] Further improved, it includes the following steps:

[0059] During the process of laying the waterproof coiled material, there shall be no drum, and the long side lap of the waterproof coiled material shall be staggered by 1 / 3 - 1 / 2 distance between the upper and lower layers, and the short side shall be staggered by 1.5 meters in the same layer.

[0060] It is further improved that the coating film is any one of polymer cement-based waterproof coating or polyurethane waterproof coating.

[0061] It is further improved that the external corner 11 at the side where the water retaining sill 1 is connected to the arc chamfer structure 2 is in the shape of a convex arc.

[0062] The waterproof node construction method for the junction of the positive and inverted roofs provided by the present invention is simple to operate, easy for workers to learn and get started, there is no cross-operation of multiple types of work, and the construction efficiency is high; the materials are simple and economical, and the relevant materials and equipment are the same as those for general waterproof construction. At the same time, this method effectively blocks the drainage channel at the junction of the positive and inverted roofs, reduces the risk of leakage of the inverted roof in the future, and is conducive to the smooth progress of the later project; this method has no vibration and no pollution to the surrounding environment.

[0063] Enlightened by the above ideal embodiments according to the present invention, through the above description, relevant staff can completely make various changes and modifications within the scope not deviating from the technical idea of this invention. The technical scope of this invention is not limited to the content in the specification, and its technical scope must be determined according to the scope of the claims.

Claims

1. A waterproof node construction method for the junction of positive and inverted roofs. It is characterized in that The steps include: First construct a water retaining sill at the junction of the upright roof and the inverted roof; After the water retaining sill reaches the design strength, the film is applied on the side of the water retaining sill close to the upright roof and the upright roof base; Construct an arc chamfer structure on the side of the water retaining sill close to the inverted roof; Construct the structural layer of the upright roof; After the upright roof structure layer reaches the design strength, clean the inverted roof base and the upper surface of the upright roof structure layer, and apply cold primer; After the cold primer is dry, lay the waterproof membrane; Construct the roof surface structure on the waterproof membrane.

2. The waterproof node construction method at the junction of the positive and inverted roof according to claim 1, It is characterized in that The circular arc chamfer structure is an inwardly concave circular arc chamfer structure, and the circular arc chamfer structure is made of waterproof mortar.

3. The waterproof node construction method at the junction of the positive and inverted roof according to claim 1, It is characterized in that The waterproof coiled material has two layers.

4. The waterproof node construction method at the junction of the positive and inverted roofs according to claim 3, It is characterized in that The steps include: Carry out the first water storage test after the first layer of waterproof membrane is laid; After confirming that there is no leakage, lay the second layer of waterproof membrane; Conduct a second water storage test; After confirming that there is no leakage, construct the roof surface structure.

5. The waterproof node construction method at the junction of the positive and inverted roofs according to claim 1, It is characterized in that The steps include: After the coating film is dry, polyurethane is used to seal the inner corners where the upright roof and the water retaining sill intersect.

6. The waterproof node construction method at the junction of the upright and inverted roofs according to claim 2, It is characterized in that The steps include: After the arc chamfer structure reaches the designed strength, polyurethane is used to seal the inner corner where the chamfer intersects with the inverted roof.

7. The waterproof node construction method at the junction of the upright and inverted roofs according to claim 1, It is characterized in that The steps include: Before carrying out the water retaining sill construction, clean the upright roof base and remove the accumulated dust.

8. The waterproof node construction method at the junction of the upright and inverted roofs according to claim 3, It is characterized in that The steps include: There must be no hollows during the laying of waterproof membranes, and the long sides of the waterproof membranes must be staggered by 1 / 3-1 / 2 of the distance between the upper and lower sections, and the short sides must be staggered by 1.5 meters on the same layer.

9. The waterproof node construction method at the junction of the upright and inverted roofs according to claim 1, It is characterized in that The coating film is any one of a polymer cement-based waterproof coating or a polyurethane waterproof coating.

10. The waterproof node construction method at the junction of the upright and inverted roofs according to claim 1, It is characterized in that The positive corner of the side where the water retaining sill is connected to the arc chamfered structure is in an outward convex arc shape.

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