CN111411743A - Parapet waterproof repairing method and parapet waterproof repairing structure - Google Patents
Parapet waterproof repairing method and parapet waterproof repairing structure Download PDFInfo
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- CN111411743A CN111411743A CN202010323299.XA CN202010323299A CN111411743A CN 111411743 A CN111411743 A CN 111411743A CN 202010323299 A CN202010323299 A CN 202010323299A CN 111411743 A CN111411743 A CN 111411743A
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- 239000012779 reinforcing material Substances 0.000 claims abstract description 26
- 239000000463 material Substances 0.000 claims description 112
- 230000008439 repair process Effects 0.000 claims description 42
- 238000004078 waterproofing Methods 0.000 claims description 19
- 238000010276 construction Methods 0.000 claims description 15
- 239000011083 cement mortar Substances 0.000 claims description 13
- 239000004593 Epoxy Substances 0.000 claims description 9
- 239000004570 mortar (masonry) Substances 0.000 claims description 9
- 230000003139 buffering effect Effects 0.000 claims description 5
- 239000012528 membrane Substances 0.000 claims description 4
- 238000004140 cleaning Methods 0.000 claims description 3
- 238000009412 basement excavation Methods 0.000 claims 1
- 238000005336 cracking Methods 0.000 abstract description 6
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 20
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- 238000004321 preservation Methods 0.000 description 3
- PIICEJLVQHRZGT-UHFFFAOYSA-N Ethylenediamine Chemical compound NCCN PIICEJLVQHRZGT-UHFFFAOYSA-N 0.000 description 2
- 239000002253 acid Substances 0.000 description 2
- 230000032683 aging Effects 0.000 description 2
- 239000003513 alkali Substances 0.000 description 2
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- 150000002148 esters Chemical class 0.000 description 2
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- 238000007710 freezing Methods 0.000 description 2
- 229920000647 polyepoxide Polymers 0.000 description 2
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- 241000282376 Panthera tigris Species 0.000 description 1
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- 239000004588 polyurethane sealant Substances 0.000 description 1
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04D—ROOF COVERINGS; SKY-LIGHTS; GUTTERS; ROOF-WORKING TOOLS
- E04D11/00—Roof covering, as far as not restricted to features covered by only one of groups E04D1/00 - E04D9/00; Roof covering in ways not provided for by groups E04D1/00 - E04D9/00, e.g. built-up roofs, elevated load-supporting roof coverings
- E04D11/02—Build-up roofs, i.e. consisting of two or more layers bonded together in situ, at least one of the layers being of watertight composition
-
- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04D—ROOF COVERINGS; SKY-LIGHTS; GUTTERS; ROOF-WORKING TOOLS
- E04D13/00—Special arrangements or devices in connection with roof coverings; Protection against birds; Roof drainage ; Sky-lights
- E04D13/14—Junctions of roof sheathings to chimneys or other parts extending above the roof
- E04D13/1407—Junctions of roof sheathings to chimneys or other parts extending above the roof for flat roofs
- E04D13/1415—Junctions to walls extending above the perimeter of the roof
-
- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04G—SCAFFOLDING; FORMS; SHUTTERING; BUILDING IMPLEMENTS OR AIDS, OR THEIR USE; HANDLING BUILDING MATERIALS ON THE SITE; REPAIRING, BREAKING-UP OR OTHER WORK ON EXISTING BUILDINGS
- E04G23/00—Working measures on existing buildings
- E04G23/02—Repairing, e.g. filling cracks; Restoring; Altering; Enlarging
- E04G23/0281—Repairing or restoring roofing or roof covering
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- Engineering & Computer Science (AREA)
- Architecture (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- Mechanical Engineering (AREA)
- Roof Covering Using Slabs Or Stiff Sheets (AREA)
Abstract
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.
Description
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.
Example 1
A parapet wall waterproof repairing method, as shown in fig. 1, wherein a parapet wall 230 is arranged around the periphery of a flat roof 100, as shown in fig. 2 to 6, the flat roof 100 comprises a structural layer 110 and a surface layer 120 positioned on the structural layer 110, and the method comprises the following steps:
s1, excavating the flat roof at the joint of the flat roof and the parapet 230, and excavating to the structural layer 110 of the flat roof to form a V-shaped groove 410 between the structural layer 110 of the flat roof and the vertical surface of the parapet 230, and forming a new gutter 420 between the flat roof above the V-shaped groove 410 and the vertical surface of the parapet 230;
s2, cleaning the surfaces of the flat roof, the vertical surface of the parapet 230, the V-shaped groove 410 obtained by excavating in the step S1 and the newly-made gutter 420;
s3, filling a reinforcing material into the V-shaped groove 410 to strengthen the bonding force between the parapet 230 and the flat roof structure layer 110;
and S4, paving waterproof coiled materials on the vertical surfaces of the flat roof and the parapet 230.
For the existing building needing waterproof repair, the construction time is not too short, fine cracks are difficult to avoid between the parapet 230 and the flat roof, which is the neglected part in the existing waterproof repair technology and is also the symptom that the waterproof repair structure cannot obtain longer validity period, the existence of the cracks makes the bonding force between the parapet 230 and the flat roof insufficient, the waterproof layer at the position is weak because the parapet and the flat roof are separated from each other to form pulling on the waterproof coiled material, and once the waterproof layer fails, accumulated water can permeate into the interior of the building through the gradually enlarged cracks more easily. According to the invention, before the waterproof roll material is laid, the surface layer 120 and part of the structural layer 110 of the flat roof close to the parapet 230 are chiseled off, so that the V-shaped groove 410 capable of being filled with the reinforcing material is formed between the flat roof and the parapet 230, the bonding force between the parapet 230 and the structural layer 110 of the flat roof is enhanced through filling the reinforcing material, the stable bonding between the parapet 230 and the flat roof is ensured, the mutual deviation caused by cracking or insufficient bonding force between the parapet 230 and the flat roof is avoided, the waterproof structure is finally damaged due to the pulling of the waterproof roll material laid on the surface, the waterproof reliability is improved, and the service life is prolonged. The new gutter 420 may be formed between the vertical surface of the parapet 230 and the roof surface layer 120, or between the parapet 230 and the roof including the surface layer 120 and the structural layer 110, that is, the new gutter 420 may be formed by chiseling the roof surface layer 120, or may be formed by chiseling the roof surface layer 120 and a part of the structural layer 110.
Example 2
As a modification of example 1, as shown in fig. 7 and 9, in order to prevent the flat roof from pushing the parapet 230 outward, in step S4 of this example, before or after the waterproof roll is laid, a buffer material is filled in the newly made gutter 420 to form a buffer layer between the vertical surface of the parapet 230 and the flat roof. The existence of the buffer layer not only fills up the newly-made gutter 420 to enable the flat roof to be flat, but also prevents the flat roof from forming outward thrust on the parapet 230, and further improves the protection effect on the waterproof layer.
Example 3
As a modification of one implementation manner of embodiment 2, in this embodiment, as shown in fig. 8, a newly-made gutter 420 is formed between the facade of the parapet wall 230 and the surface layer 120 of the roof, in this case, the workload of chiseling the newly-made gutter 420 is small, which is beneficial to shortening the construction period of a repair project; meanwhile, since the thickness of the flat roof surface layer 120 is generally small, the depth of the newly-made gutter 420 formed by chiseling the flat roof surface layer 120 is correspondingly small, and in order to ensure that the buffer layer can actually play a corresponding buffer role, preferably, before the waterproof roll material is laid, the buffer layer is formed between the parapet 230 below the waterproof roll material and the flat roof by filling the newly-made gutter 420 with the buffer material; in addition, in order to prevent the waterproof roll from being broken due to the compression at the corner formed between the buffer layer and the parapet 230 or stressed due to the fact that the waterproof roll is not attached to the wall body, the buffer material is continuously filled between the buffer layer and the parapet 230 to form a first transition fillet 510, so that the waterproof roll can be laid at the position close to the first transition fillet 510, the waterproof roll cannot be broken, the waterproof roll can be prevented from being pulled due to stress, the service life of the waterproof roll is further prolonged, and the effective service life of the waterproof repair structure is further prolonged.
Example 4
As a modification of another implementation manner of embodiment 2, in this embodiment, as shown in fig. 10, a new gutter 420 is formed between the parapet 230 and the flat roof including the surface layer 120 and the structural layer 110, and preferably, after the waterproof roll is laid, a buffer material is filled in the new gutter 420, so that the buffer layer is formed between the parapet 230 on the waterproof roll and the flat roof, that is, before the buffer material is filled, the waterproof roll is laid first, and the buffer layer is formed on the waterproof layer, so as to help to guide water on the flat roof into the new gutter, and promote rapid drainage of surface accumulated water; in addition, in order to prevent the corner formed between the reinforced V-shaped groove 410 and the parapet 230 from being broken due to compression or stressed due to the fact that the waterproof roll is not attached to a wall body, a buffer material is filled between the upper surface of the V-shaped groove 410 and the parapet 230 to form a second transition fillet 520, so that the waterproof roll can be laid at the position and can be tightly attached to the second transition fillet 520, the waterproof roll cannot be broken due to the fact that the waterproof roll is broken, the waterproof roll can be prevented from being pulled due to stress, the service life of the waterproof roll is further prolonged, and the effective service life of the waterproof repairing structure is further prolonged.
Example 5
As a modification of embodiments 1 to 4, in this embodiment, as shown in fig. 11, the waterproof roll material laid on the surface of the parapet 230 is laid along the vertical surface, and the end of the waterproof roll material faces the sky, and once the waterproof roll material is not firmly adhered to the vertical surface of the parapet 230, there is a possibility that water vapor may permeate into the structure of the parapet 230 from there, for this purpose, in step S4, the end of the waterproof roll material laid on the vertical surface of the parapet 230 is extended at least to the top of the parapet 230 and cut into the parapet 230, i.e., a seam is provided on the top of the parapet 230 or on the vertical surface away from the flat roof, and the end of the waterproof roll material is inserted into the seam, and then the waterproof roll material is fixed by matching a metal bead and a cement.
Generally, at the joint of the 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 invention adopts double-layer waterproof coiled materials at the joint of the parapet 230 and the flat roof to improve the tensile strength of the waterproof layer, in step S4, the waterproof coiled materials comprise an inner waterproof coiled material 320 and surface layer 120 waterproof coiled materials 330 and 340, and the surface layer 120 waterproof coiled materials 330 and 340 at least completely cover the inner waterproof coiled material 320.
Example 6
A parapet waterproof repairing structure comprises a flat roof 100, parapet 230 surrounding the flat roof 100 and waterproof rolls laid on vertical faces of the flat roof 100 and the parapet 230, wherein the flat roof 100 comprises a structural layer 110 and a surface layer 120 located on the structural layer 110, a V-shaped groove 410 formed by excavating the flat roof 100 and located between the structural layer 110 and the parapet 230 and a newly-made gutter 420 located between the flat roof 100 and the parapet 230 and located above the V-shaped groove 410 are arranged between the parapet 230 and the flat roof 230, and reinforcing materials are filled in the V-shaped groove 410 to reinforce the bonding force between the parapet 230 and the structural layer 110 of the flat roof.
For the existing building needing waterproof repair, the construction time is not too short, fine cracks are difficult to avoid between the parapet 230 and the flat roof, which is the neglected part in the existing waterproof repair technology and is also the symptom that the waterproof repair structure cannot obtain longer validity period, the existence of the cracks makes the bonding force between the parapet 230 and the flat roof insufficient, the waterproof layer at the position is weak because the parapet and the flat roof are separated from each other to form pulling on the waterproof coiled material, and once the waterproof layer fails, accumulated water can permeate into the interior of the building through the gradually enlarged cracks more easily. According to the invention, the surface layer 120 and part of the structural layer 110 of the flat roof close to the parapet 230 are chiseled off, so that the V-shaped groove 410 which can be filled with the reinforcing material is formed between the flat roof and the parapet 230, the bonding force between the parapet 230 and the structural layer 110 of the flat roof is enhanced through the filling of the reinforcing material, the stable bonding between the parapet 230 and the flat roof is ensured, the mutual deviation caused by cracking or insufficient bonding force between the parapet 230 and the flat roof is avoided, the waterproof structure is finally damaged due to the pulling of the waterproof coiled material paved on the surface, the waterproof reliability is improved, and the service life is prolonged. The new gutter 420 may be formed between the vertical surface of the parapet 230 and the roof surface layer 120, or between the parapet 230 and the roof including the surface layer 120 and the structural layer 110, that is, the new gutter 420 may be formed by chiseling the roof surface layer 120, or may be formed by chiseling the roof surface layer 120 and a part of the structural layer 110.
Example 7
As a modification of example 6, as shown in fig. 7 and 9, in order to prevent the flat roof from pushing the parapet 230 outwards, the newly made gutter 420 of this example is filled with a buffer material to form a buffer layer between the parapet 230 and the flat roof. The buffer layer is arranged to fill and level the newly-made gutter 420, so that the flat roof is restored to be flat, the flat roof is prevented from forming outward thrust on the parapet wall 230, and the protection effect on the waterproof layer is further improved.
Example 8
As a modification of one implementation manner of embodiment 8, in this embodiment, as shown in fig. 8, a newly-made gutter 420 is formed between the facade of the parapet wall 230 and the surface layer 120 of the roof, in this case, the workload of chiseling the newly-made gutter 420 is small, which is beneficial to shortening the construction period of a repair project; meanwhile, since the thickness of the flat roof surface layer 120 is generally small, the depth of the newly-made gutter 420 formed by chiseling the flat roof surface layer 120 is correspondingly small, 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 230 below the waterproof roll and the flat roof; in addition, in order to avoid the waterproof roll material from being pressed at the corner formed between the buffer layer and the parapet 230 and being broken or not being adhered to the wall body and being stressed, a first transition round angle 510 formed by a buffer material is arranged between the buffer layer and the parapet 230, so that the waterproof roll material can be laid at the corner and tightly adhered to the first transition round angle 510, 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 further prolonged.
Example 9
As a modification of another implementation manner of embodiment 8, in this embodiment, as shown in fig. 10, a new gutter 420 is formed between the parapet 230 and the flat roof including the surface layer 120 and the structural layer 110, and preferably a buffer layer is formed between the parapet 230 on the waterproof roll and the flat roof, that is, the waterproof roll is laid before the buffer material is filled, and the buffer layer is formed on the waterproof layer, so as to help to guide water on the flat roof into the new gutter and promote the rapid drainage of surface water; in addition, in order to prevent the waterproof roll from being broken due to the pressure at the corner formed between the V-shaped groove 410 filled with the reinforcing material and the parapet 230 or being stressed due to the fact that the waterproof roll is not attached to a wall body, a second transition fillet 520 formed by a buffer material is arranged between the upper surface of the V-shaped groove 410 and the parapet 230, so that the waterproof roll can be laid at the position and can be tightly attached to the second transition fillet 520, the waterproof roll cannot be broken due to the fact that the waterproof roll is arranged at the position, the waterproof roll can be prevented from being pulled due to force, the service life of the waterproof roll is further prolonged, and the effective service life of the waterproof repairing structure is.
Example 10
In this embodiment, as an improvement of embodiments 6 to 9, the waterproof roll material laid on the surface of the parapet 230 is laid along the vertical surface, and the end of the waterproof roll material faces the sky, and once the waterproof roll material is not firmly adhered to the vertical surface of the parapet 230, water vapor may penetrate into the structure of the parapet 230 from there, for this purpose, as shown in fig. 11, the end of the waterproof roll material laid on the surface of the parapet 230 at least extends to the top of the parapet 230 and cuts into the parapet 230, that is, a seam is formed on the top of the parapet 230 or on the vertical surface away from the flat roof, and the end of the waterproof roll material is inserted into the seam, and then the waterproof roll material is fixed by matching a metal bead and a cement nail, and then sealed.
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 invention adopts double-layer waterproof coiled materials at the joint of the parapet 230 and the flat roof to improve the tensile strength of the waterproof layer, the waterproof coiled materials comprise an inner waterproof coiled material 320 and surface layer 120 waterproof coiled materials 330 and 340, and the surface layer 120 waterproof coiled materials 330 and 340 at least completely cover the inner waterproof coiled material 320.
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 230 waterproof repair structure further comprises an extruded sheet 310 laid on the surface of the flat roof and below the waterproof roll, and the invention innovatively provides that slope finding is realized on a large-scale, discontinuous and flat roof with a large-area support by adopting the mode of laying the extruded sheet 310, so that the construction difficulty is reduced, cracks are avoided, and a certain heat preservation effect is achieved.
Example 11
As a modification of the above embodiment, in order to ensure that the combination between the parapet 230 and the flat roof can be reinforced to the maximum extent without damaging the original building structure, the depth of the V-shaped groove 410 is preferably 50 to 100mm, and/or the width of the V-shaped groove 410 is 25 to 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.
It should be understood that the above-described embodiments of the present invention are merely examples for clearly illustrating the present invention, and are not intended to limit the embodiments of the present invention. Other variations and modifications will be apparent to persons skilled in the art in light of the above description. And are neither required nor exhaustive of all embodiments. Any modification, equivalent replacement, and improvement made within the spirit and principle of the present invention should be included in the protection scope of the claims of the present invention.
Claims (10)
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.
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| CN116816135A (en) * | 2023-07-10 | 2023-09-29 | 科顺建筑修缮技术有限公司 | Roof waterproof maintenance structure and roof waterproof maintenance method |
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