阅读说明：本技术 一种女儿墙防水修缮方法及其结构 (Parapet waterproof repairing method and parapet waterproof repairing structure ) 是由 刘国华 戴书陶 廖树彬 于 2020-04-22 设计创作，主要内容包括：本发明公开了一种女儿墙防水修缮方法及其结构,在铺设防水卷材之前对靠近女儿墙的平屋面进行表层及部分结构层的凿除使得平屋面与女儿墙之间形成能够填入增强材料的V形槽,通过增强材料的填入加强女儿墙与平屋面结构层的结合力,确保女儿墙与平屋面的稳定结合,避免两者之间由于开裂或结合力不足而相互背离、最终构成对铺设于表面的防水卷材的拉扯而致使防水结构被破坏,提高防水的可靠性和使用寿命。(The invention discloses a parapet waterproof repairing method and a parapet waterproof repairing structure, wherein before waterproof rolls are laid, a surface layer and a part of a structural layer of a flat roof close to the parapet are chiseled to form a V-shaped groove capable of being filled with a reinforcing material between the flat roof and the parapet, the bonding force between the parapet and the structural layer of the flat roof is enhanced by filling the reinforcing material, the stable bonding between the parapet and the flat roof is ensured, the parapet and the flat roof are prevented from deviating from each other due to cracking or insufficient bonding force, the waterproof roll laid on the surface is finally pulled to damage a waterproof structure, and the waterproof reliability and the service life are improved.)

1. A parapet wall waterproof repairing method is characterized in that the parapet wall is arranged on the periphery of a flat roof in a surrounding mode, the flat roof comprises a structural layer and a surface layer located on the structural layer, and the parapet wall waterproof repairing method comprises the following steps:

s1, excavating the flat roof at the joint of the flat roof and the parapet, and excavating to the structural layer of the flat roof to form a V-shaped groove between the structural layer of the flat roof and the vertical surface of the parapet and form a new gutter between the flat roof above the V-shaped groove and the vertical surface of the parapet;

s2, cleaning the flat roof, the parapet vertical surface, the V-shaped groove obtained by excavating in the step S1 and the surface of a newly-made gutter;

s3, filling a reinforcing material into the V-shaped groove to strengthen the bonding force between the parapet wall and the flat roof structure layer;

and S4, paving the waterproof coiled material on the flat roof and the parapet vertical face.

2. A parapet waterproofing and repairing method according to claim 1, wherein in step S4, before or after the waterproof roll is laid, a cushion material is filled in the newly-made gutter to form a cushion layer between the parapet facade and the flat roof.

3. Parapet waterproofing and repairing method according to claim 2, characterized in that the buffering material is cement mortar.

4. The parapet waterproofing and repairing method according to claim 1, wherein in step S3, the reinforcing material is an epoxy mortar.

5. Parapet waterproofing and repair method according to claim 1, characterized in that in step S4, the ends of the waterproofing rolls laid on the parapet facades are extended at least to the top of the parapet structure and cut into the parapet.

6. A parapet waterproof repair method according to any one of claims 1 to 5, wherein in step S4, the waterproof roll material includes an inner waterproof roll material and a surface waterproof roll material, and the surface waterproof roll material covers at least the inner waterproof roll material completely.

7. The utility model provides a parapet waterproof repair structure, includes flat roofing, encloses to locate flat roofing outlying parapet and lays in the waterproofing membrane of flat roofing and parapet facade, flat roofing includes the structural layer and is located the top layer on the structural layer, a serial communication port, be equipped with between parapet and the flat roofing through the flat roofing of excavation and form, be located the V-arrangement groove between structural layer and the parapet and be located the V-arrangement groove on the plane roofing and the parapet between the parapet, be filled with reinforcing material in the V-arrangement groove in order to strengthen the cohesion of parapet and flat roofing structural layer.

8. Parapet waterproofing and repair construction according to claim 7, wherein the newly made gutter is filled with a cushioning material to form a cushioning layer between the parapet and the flat roof.

9. Parapet waterproofing and repair construction according to claim 7, characterized in that the ends of the waterproofing rolls laid on the parapet surface extend at least to the top of the parapet construction and cut into the parapet.

10. Parapet waterproof repair structure according to claims 7 to 9, wherein the waterproof roll material comprises an inner waterproof roll material and a surface waterproof roll material, and the surface waterproof roll material at least completely covers the inner waterproof roll material.

Technical Field

The invention relates to the technical field of waterproof repair, in particular to a parapet waterproof repair method and a parapet waterproof repair structure.

Background

Whether it is a tunnel, a bridge, a dam, a road, a building or a house which people live in daily life, the waterproof is a problem which cannot be ignored. The main structures of house buildings include foundations, walls, columns, buildings, floors, balconies, awnings, stairs, doors and windows, building roofs and the like, and the structures closely related to water proofing are building roofs, walls of main structures, foundations, floors, doors and windows, stairs, balconies and awnings. The roof is arranged on the top of the building and mainly used for preventing rain (snow) water and ultraviolet rays from entering a room and insulating the room. The structure of the building mainly comprises a structural layer, a slope finding layer, a leveling layer, a steam barrier layer, a heat preservation layer, a waterproof layer, a protective layer, a ventilation and heat insulation layer or a veneer and the like. Because of the needs of buildings, the roof is often provided with a water outlet, an air outlet, a chimney, an access hole, a skylight and a tiger window, or the roof is provided with equipment or used as a swimming pool, a sports ground, an apron and the like, so the roof structure is relatively complex and has high waterproof requirements.

The roof of a building is generally provided with short walls, called parapet walls and grandson parapet walls, around the roof, which mainly have the main functions of maintaining safety, and applying waterproof pressed bricks at the bottom to prevent water seepage of a waterproof layer or overflow of rainwater on the roof. The parapet wall on the roof of the person is used for protecting the safety of the person and has a decorative effect on the building facade. The parapet wall without a roof has the function of fixing the asphalt felt besides the function of facade decoration. According to the national building code, the height of the parapet wall on the roof of the upper part of the house is generally not less than 1.1m and not more than 1.5m at most.

As is well known, the waterproof material has aging characteristics, and after a building is used for a certain period of time, the phenomenon of water leakage and water seepage caused by the aging of a waterproof layer is inevitable, so that the parapet cannot be used, especially the joint of the parapet and a flat roof, and therefore, the waterproof material is an important part for the waterproof repair of the existing building besides the waterproof design of the roof of a newly-built building. For the waterproof repairing of the parapet and the joint of the parapet and the flat roof, the prior art generally only focuses on the waterproofing and repairs or replaces the waterproof layer, but the influence of the bonding strength of the parapet and the flat roof on the service life of the waterproof layer is not considered, and the influence is exactly a key factor influencing the waterproof repairing effect. Therefore, there is a need for a method of waterproofing parapet walls.

Disclosure of Invention

In view of the above, the present invention provides a parapet waterproof repair method and a parapet waterproof repair structure formed by the method, to overcome at least one of the above disadvantages of the prior art, and solve the problem that the existing parapet waterproof repair only focuses on the waterproof itself, but focuses on the influence of the structure itself on the waterproof repair life, and improve the effective service life of the waterproof.

In order to solve the technical problems, the invention adopts the following technical scheme:

a parapet wall waterproof repairing method is provided, the parapet wall is arranged on the periphery of a flat roof, the flat roof comprises a structural layer and a surface layer positioned on the structural layer, and the parapet wall waterproof repairing method comprises the following steps:

s1, excavating the flat roof at the joint of the flat roof and the parapet, and excavating to the structural layer of the flat roof to form a V-shaped groove between the structural layer of the flat roof and the vertical surface of the parapet and form a new gutter between the flat roof above the V-shaped groove and the vertical surface of the parapet;

s2, cleaning the flat roof, the parapet vertical surface, the V-shaped groove obtained by excavating in the step S1 and the surface of a newly-made gutter;

s3, filling a reinforcing material into the V-shaped groove to strengthen the bonding force between the parapet wall and the flat roof structure layer;

and S4, paving the waterproof coiled material on the flat roof and the parapet vertical face.

For the existing building needing waterproof repair, the construction time is generally not too short, fine cracks are inevitable between the parapet wall and the flat roof, the omitted part in the existing waterproof repair technology is also a symptom that the waterproof repair structure cannot obtain a longer effective period, the cracks cause that the binding force between the parapet wall and the flat roof is insufficient, the waterproof layer at the position is weak due to the fact that the parapet wall and the flat roof are mutually separated to form pulling on the waterproof coiled material, and once the waterproof layer fails, accumulated water can easily permeate into the interior of the building through the gradually enlarged cracks. According to the invention, before the waterproof coiled material is laid, the surface layer and part of the structural layer of the flat roof close to the parapet are chiseled off, so that a V-shaped groove capable of being filled with the reinforcing material is formed between the flat roof and the parapet, the bonding force between the parapet and the structural layer of the flat roof is enhanced through the filling of the reinforcing material, the stable bonding between the parapet and the flat roof is ensured, the mutual deviation caused by cracking or insufficient bonding force between the parapet and the flat roof is avoided, the waterproof structure is finally damaged due to the pulling of the waterproof coiled material laid on the surface, the waterproof reliability is improved, and the service life is prolonged. The newly-made gutter can be formed between the vertical surface of the parapet wall and the surface layer of the roof, and can also be formed between the parapet wall and the roof comprising the surface layer and the structural layer, namely the newly-made gutter can be formed by chiseling the surface layer of the roof, and can also be formed by chiseling the surface layer of the roof and part of the structural layer.

In order to prevent the flat roof from forming an outward thrust on the parapet, in step S4, before or after the waterproof roll is laid, a buffer material is filled in the newly-made gutter to form a buffer layer between the vertical face of the parapet and the flat roof. The buffer layer not only fills up a newly-made gutter to enable the flat roof to recover to be flat, but also prevents the flat roof from forming outward thrust on the parapet wall, and further improves the protection effect on the waterproof layer. In the case that the newly-made gutter is formed between the vertical face of the parapet wall and the surface layer of the roof, the workload of chiseling the newly-made gutter is small, and the construction period of repair engineering is shortened; meanwhile, because the thickness of the flat roof surface layer is generally smaller, the depth of a newly-made gutter formed by chiseling the flat roof surface layer is correspondingly smaller, and in order to ensure that the buffer layer can really play a corresponding buffer role, preferably, before the waterproof roll is laid, the buffer layer is formed between the parapet wall below the waterproof roll and the flat roof by filling the newly-made gutter with a buffer material; in addition, in order to avoid the corners of the waterproof roll material formed between the buffer layer and the parapet from being pressed and broken or not adhered to the wall body and stressed, the buffer material is continuously filled between the buffer layer and the parapet to form a first transition fillet, so that the waterproof roll material can be laid at the position and tightly adhered to the first transition fillet, the waterproof roll material cannot be broken, the waterproof roll material can be prevented from being pulled by stress, the service life of the waterproof roll material is further prolonged, and the effective service life of the waterproof repairing structure is prolonged. For the situation that a newly-made gutter is formed between the parapet and the flat roof comprising the surface layer and the structural layer, preferably, after the waterproof coiled material is paved, the buffer material is filled in the newly-made gutter, and the buffer layer is formed between the parapet and the flat roof on the waterproof coiled material, namely, the waterproof coiled material is paved before the buffer material is filled, and the buffer layer is formed on the waterproof layer, so that the water on the flat roof is led to the newly-made gutter, and the surface accumulated water is promoted to be quickly discharged; in addition, in order to prevent the corners formed between the V-shaped grooves filled with the reinforcing materials and the parapet from being broken due to compression or being stressed due to the fact that the corners are not adhered to the wall body, buffer materials are filled between the upper surface of the V-shaped grooves and the parapet to form second transition fillets, so that the waterproof rolls can be laid at the positions and can be tightly attached to the second transition fillets, the waterproof rolls cannot be broken due to the fact that the waterproof rolls are arranged, the waterproof rolls can be prevented from being pulled due to stress, the service life of the waterproof rolls is further prolonged, and the effective service life of the waterproof repairing structure is further prolonged.

The waterproof roll material paved on the parapet wall surface is paved along the vertical surface, the tail end of the waterproof roll material faces the sky, once the waterproof roll material is not firmly adhered to the parapet wall vertical surface, water vapor possibly permeates into the parapet wall structure from the position, therefore, in the step S4, the tail end of the waterproof roll material paved on the parapet wall vertical surface at least extends to the top of the parapet wall structure and is cut into the parapet wall, namely, a seam is arranged at the top of the parapet wall or the vertical surface deviating from the flat roof, the tail end of the waterproof roll material is plugged into the seam, then the waterproof roll material is matched and fixed by a metal pressing strip and a cement nail, and then the waterproof roll material is.

Generally speaking, at the joint of two structures, the waterproof layer is inevitably pulled due to the existence of mutual acting force, so that the waterproof layer at the joint is easy to damage, therefore, the double-layer waterproof roll is adopted at the joint of the parapet and the flat roof to improve the tensile strength of the waterproof layer, and in step S4, the waterproof roll comprises an inner waterproof roll and a surface waterproof roll, and the surface waterproof roll at least completely covers the inner waterproof roll.

The invention also provides a parapet waterproof repairing structure which comprises a flat roof, a parapet surrounding the flat roof and a waterproof coiled material paved on the vertical surfaces of the flat roof and the parapet, wherein the flat roof comprises a structural layer and a surface layer positioned on the structural layer, a V-shaped groove formed by excavating the flat roof and positioned between the structural layer and the parapet and a newly-made gutter positioned between the flat roof and the parapet above the V-shaped groove are arranged between the parapet and the flat roof, and a reinforcing material is filled in the V-shaped groove to strengthen the bonding force between the parapet and the structural layer of the flat roof.

For the existing building needing waterproof repair, the construction time is generally not too short, fine cracks are inevitable between the parapet wall and the flat roof, the omitted part in the existing waterproof repair technology is also a symptom that the waterproof repair structure cannot obtain a longer effective period, the cracks cause that the binding force between the parapet wall and the flat roof is insufficient, the waterproof layer at the position is weak due to the fact that the parapet wall and the flat roof are mutually separated to form pulling on the waterproof coiled material, and once the waterproof layer fails, accumulated water can easily permeate into the interior of the building through the gradually enlarged cracks. According to the invention, the surface layer and part of the structural layer of the flat roof close to the parapet wall are chiseled off, so that the V-shaped groove capable of being filled with the reinforcing material is formed between the flat roof and the parapet wall, the bonding force between the parapet wall and the structural layer of the flat roof is enhanced through the filling of the reinforcing material, the stable bonding between the parapet wall and the flat roof is ensured, the mutual deviation caused by cracking or insufficient bonding force between the parapet wall and the flat roof is avoided, the waterproof structure is finally damaged due to the pulling of the waterproof coiled material laid on the surface, the waterproof reliability is improved, and the service life is prolonged. The newly-made gutter can be formed between the vertical surface of the parapet wall and the surface layer of the roof, and can also be formed between the parapet wall and the roof comprising the surface layer and the structural layer, namely the newly-made gutter can be formed by chiseling the surface layer of the roof, and can also be formed by chiseling the surface layer of the roof and part of the structural layer.

In order to prevent the flat roof from pushing the parapet outwards, the newly-made gutter is filled with a buffer material to form a buffer layer between the parapet and the flat roof. The buffer layer not only fills up a newly-made gutter to enable the flat roof to recover to be flat, but also prevents the flat roof from forming outward thrust on the parapet wall, and further improves the protection effect on the waterproof layer.

In the case that the newly-made gutter is formed between the vertical face of the parapet wall and the surface layer of the roof, the workload of chiseling the newly-made gutter is small, and the construction period of repair engineering is shortened; meanwhile, because the thickness of the flat roof surface layer is generally smaller, the depth of a newly-made gutter formed by chiseling the flat roof surface layer is correspondingly smaller, and in order to ensure that the buffer layer can actually play a corresponding buffer role, the buffer layer is preferably formed between the parapet wall below the waterproof roll and the flat roof; in addition, for the corner pressurized of avoiding waterproofing membrane to form between buffer layer and parapet and rupture or not paste the wall body and the atress, be equipped with the first transition fillet that is formed by buffer material between buffer layer and the parapet for waterproofing membrane lays in this department and can hug closely first transition fillet setting, neither can consequently and be broken, can avoid the atress again to drag, further improves waterproofing membrane's life, and then prolongs the effective life of waterproof repair structure. For the situation that a newly-made gutter is formed between the parapet and the flat roof comprising the surface layer and the structural layer, preferably, the buffer layer is formed between the parapet and the flat roof on the waterproof roll, namely, the waterproof roll is paved before the buffer material is filled, and the buffer layer is formed on the waterproof layer, so that the water on the flat roof is led into the newly-made gutter, and the surface accumulated water is promoted to be quickly discharged; in addition, in order to avoid the corner formed by the waterproof coiled material between the V-shaped groove filled with the reinforcing material and the parapet from being pressed and broken or not adhered to a wall body to bear force, a second transition fillet formed by a buffer material is arranged between the upper surface of the V-shaped groove and the parapet, so that the waterproof coiled material can be laid at the position to be tightly attached to the second transition fillet, the waterproof coiled material cannot be broken, the waterproof coiled material can be prevented from being pulled by force, the service life of the waterproof coiled material is further prolonged, and the effective service life of the waterproof repairing structure is further prolonged.

The waterproof coiled material laid on the parapet surface is laid along the vertical face, the tail end of the waterproof coiled material faces the sky, once the waterproof coiled material is not firmly adhered to the parapet vertical face, water vapor possibly permeates into the parapet structure from the position, for this reason, the tail end of the waterproof coiled material laid on the parapet surface at least extends to the top of the parapet structure and cuts into the parapet, namely, a seam is arranged on the top of the parapet or the vertical face deviating from a flat roof, the tail end of the waterproof coiled material is plugged into the seam, then the waterproof coiled material is matched and fixed by a metal pressing strip and a cement nail, and then the waterproof coiled material is sealed by polyurethane sealant.

Generally speaking, at the joint of two structures, the waterproof layer is inevitably pulled due to the existence of mutual acting force, so that the waterproof layer at the joint is easy to damage.

The traditional newly-built roofing waterproofing or the existing roofing waterproofing repair is usually made slope or level by adopting a cement mortar laying mode, however, for large roofs, especially for non-continuous flat roofs or roofs with large-area support structures, slope finding by means of cement mortar laying is obviously difficult to apply, not only is the construction difficult, moreover, the large-area paving of cement mortar is difficult to avoid the crack caused by expansion with heat and contraction with cold in the use process, is not favorable for ensuring the service life of the newly repaired waterproof structure, therefore, the parapet waterproof repairing structure also comprises an extruded sheet paved on the surface of the flat roof and below the waterproof coiled material, and the invention innovatively provides that slope finding is realized on a large-scale, discontinuous and flat roof with a large-area bracket by adopting the mode of paving the extruded sheet, so that the construction difficulty is reduced, the generation of cracks is avoided, and a certain heat preservation effect is realized.

In order to ensure that the combination between the parapet wall and the flat roof can be reinforced to the maximum extent on the premise of not damaging the original building structure, the depth of the V-shaped groove is preferably 50-100 mm, and/or the width of the V-shaped groove is 25-60 mm.

In the invention, the reinforcing material is preferably epoxy mortar, the epoxy mortar is a preferred repairing and reinforcing material, and a solidified body which has high strength and high bonding force and is not limited by the structural shape is formed after solidification, so that the epoxy mortar has excellent anti-permeability, anti-freezing, salt-resistant, alkali-resistant, weak acid-resistant and anti-corrosion performances and repairing and reinforcing performances. The epoxy mortar preferably comprises the following components in parts by weight: 100 parts of epoxy resin, 14 parts of dibutyl ester, 25 parts of ethylenediamine, 400 parts of cement and 400 parts of fine sand, and through repeated debugging of the inventor, the components in the proportion can achieve the optimal reinforcing effect. The buffering material is preferably cement mortar, the weight part ratio of cement to fine sand in the cement mortar is preferably 1:2.5, the cement mortar adopting the proportion can obtain the optimal buffering effect, and the improvement on the structural performance of waterproof repair is greatly guaranteed.

Compared with the prior art, the invention has the following beneficial effects: according to the invention, before the waterproof coiled material is laid, the surface layer and part of the structural layer of the flat roof close to the parapet are chiseled off, so that a V-shaped groove capable of being filled with the reinforcing material is formed between the flat roof and the parapet, the bonding force between the parapet and the structural layer of the flat roof is enhanced through the filling of the reinforcing material, the stable bonding between the parapet and the flat roof is ensured, the mutual deviation caused by cracking or insufficient bonding force between the parapet and the flat roof is avoided, the waterproof structure is finally damaged due to the pulling of the waterproof coiled material laid on the surface, the waterproof reliability is improved, and the service life is prolonged.

Drawings

Fig. 1 is a schematic structural relationship diagram of parapet walls and flat roofs.

Fig. 2 is a schematic view of the water-proof repair of a flat roof.

Fig. 3 is a schematic view of the waterproof repair of the junction of the parapet wall and the flat roof.

Fig. 4 is a partially enlarged view of a portion a in fig. 3.

Fig. 5 is a schematic view of the waterproof repairing of the joint of the parapet wall and the flat roof.

Fig. 6 is a partially enlarged view of a portion B in fig. 5.

Fig. 7 is a schematic view of a modified water-proof repair of the parapet of fig. 3 in connection with a flat roof.

Fig. 8 is a partially enlarged view of a portion C in fig. 7.

Fig. 9 is a schematic view of a modified water-proof repair of the parapet of fig. 8 in connection with a flat roof.

Fig. 10 is a partially enlarged view of a portion D in fig. 9.

Fig. 11 is a partially enlarged view of a portion E in fig. 9.

Description of reference numerals: the roof comprises a flat roof 100, a structural layer 110, a surface layer 120, a parapet 230, an extruded sheet 310, an inner waterproof roll 320, surface waterproof rolls 330 and 340, a V-shaped groove 410, a newly-made gutter 420, a first transition round corner 510 and a second transition round corner 520.

Detailed Description

The drawings are for illustration purposes only and are not to be construed as limiting the invention; for the purpose of better illustrating the embodiments, certain features of the drawings may be omitted, enlarged or reduced, and do not represent the size of an actual product; it will be understood by those skilled in the art that certain well-known structures in the drawings and descriptions thereof may be omitted; the positional relationships depicted in the drawings are for illustrative purposes only and are not to be construed as limiting the invention. The present invention will be described in further detail with reference to specific examples.