CN112854619B - Deformation joint structure of accessible flat roof and construction method thereof - Google Patents
Deformation joint structure of accessible flat roof and construction method thereof Download PDFInfo
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- CN112854619B CN112854619B CN202110052862.9A CN202110052862A CN112854619B CN 112854619 B CN112854619 B CN 112854619B CN 202110052862 A CN202110052862 A CN 202110052862A CN 112854619 B CN112854619 B CN 112854619B
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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
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- 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
- E04D13/16—Insulating devices or arrangements in so far as the roof covering is concerned, e.g. characterised by the material or composition of the roof insulating material or its integration in the roof structure
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04D—ROOF COVERINGS; SKY-LIGHTS; GUTTERS; ROOF-WORKING TOOLS
- E04D3/00—Roof covering by making use of flat or curved slabs or stiff sheets
- E04D3/38—Devices for sealing spaces or joints between roof-covering elements
Abstract
The invention discloses a deformation joint structure of a accessible flat roof and a construction method thereof, wherein the device comprises a waterproof structure layer and a splicing type rigid surface layer, the waterproof structure layer comprises a waterproof layer and an isolation layer, a U-shaped bracket and an elastic foam rod are arranged in a deformation joint, and the splicing type rigid surface layer comprises a movable rigid surface layer section and a fixed rigid surface layer section; the method comprises the steps of firstly, preparing for construction; secondly, installing a U-shaped bracket; thirdly, constructing a waterproof layer; fourthly, a water closing test; constructing a waterproof additional layer and filling an elastic foam rod; sixthly, constructing a spliced rigid surface layer; and seventhly, applying deformation joints of the inner wall ceiling. The invention can ensure that no water is gathered at the deformation joint, and the arrangement of the unvulcanized butyl rubber putty layer between the movable rigid surface layer section and the binding layer can ensure that the movable rigid surface layer section forms a structure similar to a slidable simply supported beam at the deformation joint, thereby providing a certain deformation under the condition of meeting the bearing capacity.
Description
Technical Field
The invention belongs to the technical field of building construction, and particularly relates to a deformation joint structure of a accessible flat roof and a construction method thereof.
Background
Along with the development of social economy, various large-scale buildings, high-low staggered floor buildings and special-shaped buildings are constructed in a large quantity, and more various deformation joints such as settlement joints, expansion joints, earthquake-resistant joints and the like appear in the construction process. The construction quality control of these deformation joints has become a key and difficult point in the construction process, and in order to avoid cracks or damages in the building components caused by the influence of temperature changes and different loads due to overlong buildings, uneven bearing capacity of the foundation, the action of earthquake force in earthquake regions on the buildings and other factors, the buildings are divided into several independent parts in advance during the design. Enabling each part to deform freely. The deformation joint can be divided into an expansion joint, a settlement joint and a shockproof joint according to functions, wherein the expansion joint is also called as a temperature joint and is used for dividing a overlong building into a plurality of units with shorter lengths so as to reduce damage caused by temperature stress. In order to make the buildings at both sides of the expansion joint freely expand and contract, the ground, the wall, the floor layer, the roof and the like above the top surface of the foundation are required to be completely disconnected. Thus, roof deformation joint leakage is one of the common building quality problems.
At present, during construction of existing roof deformation joints, upturning water stopping ridges are generally required to be added at the deformation joints, and the existing roof deformation joints are not suitable for the deformation joints of the flat roofs of the upper people. In the building engineering, the high-deformation joints of the traditional accessible roof are mostly covered by metal plates and also covered by precast concrete plates. When the metal plate is used for sealing the cover, the joints at the joint positions of the sections of the metal plate leak rain due to the fact that the joints are not welded or are not welded tightly, waterproof gaskets are not added when the metal plate is anchored by rivets, or the quality of the waterproof gaskets is poor, the gaskets are aged for a long time, and the like, and the leakage occurs at the rivet positions; still others are stepped on during use, deforming the metal sheet to create leaks. When the concrete prefabricated cover plate is used, the prefabricated plate is small in blocks, more in joints, improper in joint treatment, leakage occurs at the joint position, and the prefabricated cover plate is troublesome to manufacture and install.
Disclosure of Invention
The invention aims to solve the technical problem that the defects in the prior art are overcome, and the deformation joint structure of the accessible flat roof is provided, wherein the U-shaped bracket is arranged at the lower part of the waterproof layer, and the elastic foam rod is arranged between the waterproof layer and the waterproof additional layer, so that the waterproof layer at the deformation joint can be supported, the waterproof layer is prevented from loosening and sinking due to temperature change, the waterproof additional layer can form a drainage arch at the deformation joint, water is guided away in time, water is prevented from being collected at the deformation joint, and the arrangement of the unvulcanized butyl rubber putty layer between the movable rigid surface layer section and the bonding layer can ensure that the movable rigid surface layer section forms a structure similar to a slidable simply supported beam at the deformation joint, so that a certain deformation amount is provided under the condition of meeting the bearing capacity.
In order to solve the technical problems, the invention adopts the technical scheme that: the utility model provides a go up people's flat roofing movement joint structure which characterized in that: the waterproof structure layer comprises a waterproof structure layer which is paved on an existing roof structure and stretches across deformation joints and a splicing type rigid surface layer which is paved on the waterproof structure layer through a binding layer, deformation gaps matched with the deformation joints are reserved on the binding layer, the waterproof structure layer comprises a waterproof layer and an isolation layer which are paved on the existing roof structure in sequence from bottom to top, a waterproof additional layer which stretches across the deformation joints is arranged between the waterproof layer and the isolation layer, an elastic foam rod which is used for bearing a U-shaped bracket of the waterproof layer and is used for enabling the waterproof additional layer to upwards arch at the deformation joints is arranged in the deformation joints, the elastic foam rod is positioned between the waterproof layer and the waterproof additional layer, the splicing type rigid surface layer comprises movable rigid surface layer sections stretching across the deformation joints and fixed rigid surface layer sections connected to the two sides of the movable rigid surface layer sections, be provided with the clearance that moves about between activity rigidity surface course section and the fixed rigidity surface course section, it has the butyl sealed glue to fill in the clearance that moves about between rigidity surface course section and the fixed rigidity surface course section, it has the unvulcanized butyl rubber putty layer to bond between activity rigidity surface course section and the anchor coat, be provided with on the fixed rigidity surface course section by being close to one side of movement joint to keeping away from the drainage slope of one side downward sloping gradually of movement joint, the slope of drainage slope is not less than 1%.
Foretell last people's flat roofing movement joint structure, its characterized in that: the existing roof structure sequentially comprises a concrete structure layer, a roof heat insulation layer, a foam concrete slope-finding layer and a waterproof leveling layer from bottom to top.
Foretell last people's flat roofing movement joint structure, its characterized in that: the two sides of the movable rigid surface layer segments are respectively lapped on the binding layers on the two sides of the deformation joint, and the fixed rigid surface layer segments are fixedly connected with the binding layers.
Foretell last people's flat roofing movement joint structure, its characterized in that: a fire retardant belt is arranged in the deformation joint and is located below the U-shaped bracket.
Foretell last people's flat roofing movement joint structure, its characterized in that: and the bottom of the deformation joint is provided with an inner wall ceiling deformation joint connecting structure which spans below the deformation joint.
Foretell last people's flat roofing movement joint structure, its characterized in that: the U-shaped bracket is a U-shaped galvanized iron sheet bracket with flange plates arranged on two sides, the flange plates on two sides of the U-shaped bracket are respectively arranged on the upper surface of the existing roof structure in a clinging mode, and the opening of the U-shaped bracket is arranged upwards.
Foretell last people's flat roofing movement joint structure, its characterized in that: the waterproof layer is arranged to be attached to the upper surface of the U-shaped bracket to form a U-shaped groove for mounting the elastic foam rod, and the isolation layer is arranged to be attached to the upper surfaces of the waterproof layer and the waterproof additional layer.
Meanwhile, the invention also discloses a construction method of the deformation joint structure of the accessible flat roof, which is characterized by comprising the following steps:
step one, construction preparation: cleaning floating sand and loose sundries on the surface of the waterproof leveling layer, and chiseling and removing convex hard matters on the surface of the waterproof leveling layer;
step two, installing a U-shaped bracket: paving a U-shaped bracket from two ends of the deformation joint to the middle of the deformation joint;
step three, constructing a waterproof layer: laying a waterproof roll on the waterproof leveling layer from one side of the deformation joint to the other side of the deformation joint, and pressing the waterproof roll at the deformation joint into the U-shaped bracket by using a waterproof roll profiling tool to form a waterproof layer;
step four, water closing test: arranging water retaining ridges on the waterproof layers on the two sides of the deformation joint, storing water between the two water retaining ridges for a water closing test, executing a fifth step when the waterproof layer does not leak 48 hours after the water closing test is started, and removing the constructed waterproof layer and circulating the third step when the waterproof layer leaks;
step five, constructing a waterproof additional layer and filling an elastic foam rod: laying waterproof rolls on the waterproof layer at the deformation joint to form a waterproof additional layer, and simultaneously bonding and fixing the waterproof additional layers positioned on the two sides of the deformation joint with the waterproof layer; the waterproof layer is pressed into a groove on the U-shaped bracket and is filled with an elastic foam rod, and the inner surface of the upward arching of the waterproof additional layer is attached to the elastic foam rod;
step six, construction of a splicing type rigid surface layer, which comprises the following steps:
step 601, isolation layer construction: laying non-woven fabrics or felts on the waterproof layer and the waterproof additional layer to form an isolation layer;
step 602, constructing a movable rigid surface layer segment and a fixed rigid surface layer segment: paving brick blocks on the isolation layers on the two sides of the deformation joint by adopting concrete to form fixed rigid surface layer segments, wherein the concrete between the fixed rigid surface layer segments and the isolation layers is a combined layer;
meanwhile, a butyl rubber putty layer is laid on the bonding layers on the two sides of the deformation joint, and bricks are laid on the butyl rubber putty layer to form movable rigid surface layer segments; wherein, a movable gap is arranged between the movable rigid surface layer segment and the fixed rigid surface layer segment, and the movable rigid surface layer segment crosses the deformation joint;
step 603, caulking by using butyl sealant: filling butyl sealant in a movable gap between the movable rigid surface layer segment and the fixed rigid surface layer segment for caulking;
seventhly, constructing deformation joints of the inner wall ceiling: and a fire retardant belt is arranged in a deformation joint at the concrete structure layer, and an aluminum alloy panel is connected to the bottom of the deformation joint to form a deformation joint connecting structure of the inner wall and the ceiling.
The construction method is characterized in that: when the waterproof layer is constructed in the third step, the waterproof roll material on one side of the deformation joint is firstly bonded and fixed with the waterproof leveling layer, then the waterproof roll material on the position of the deformation joint is pressed into the U-shaped bracket by adopting a waterproof roll material profiling tool, and finally the waterproof roll material on the other side of the deformation joint is bonded and fixed with the waterproof leveling layer.
The construction method is characterized in that: waterproofing membrane die mould instrument includes and fixes the spacing depression bar on arc briquetting both sides upper portion respectively with U type bracket matched with arc briquetting and two, the top of arc briquetting is provided with a handle.
Compared with the prior art, the invention has the following advantages:
1. according to the deformation joint structure of the flat roof, the U-shaped bracket is arranged at the lower part of the waterproof layer, and can support the waterproof layer at the deformation joint, so that the waterproof layer is prevented from being loosened and sinking due to temperature change
2. According to the deformation joint structure of the flat roof, the elastic foam rod is arranged between the waterproof layer and the waterproof additional layer, so that the elastic foam rod and the waterproof additional layer form a drainage arch at the deformation joint, water is guided away in time, and water is prevented from being gathered at the deformation joint.
3. According to the deformation joint structure of the flat roof, the unvulcanized butyl rubber putty layer is bonded between the movable rigid surface layer section and the binding layer, the movable gap is formed between the movable rigid surface layer section and the fixed rigid surface layer section, the movable rigid surface layer section can form a structure similar to a slidable simply supported beam at the deformation joint by utilizing the characteristics of the unvulcanized butyl rubber putty, and a certain deformation amount is provided under the condition that the bearing capacity is met.
4. According to the method, when the waterproof layer and the waterproof additional layer are constructed, the waterproof coiled material on one side of the deformation joint is firstly bonded and fixed, then compression molding or arching treatment is carried out on the deformation joint, and finally the waterproof coiled material on the other side of the deformation joint is bonded and fixed, so that the construction quality of the waterproof layer and the waterproof additional layer can be effectively improved.
5. According to the method, the water blocking ridge is arranged on the waterproof layer to carry out the water closing test, so that the possibility of water leakage of the waterproof layer can be effectively reduced, and the construction quality and the waterproof performance of the deformation joint structure of the flat roof can be guaranteed.
6. The method adopted by the invention can effectively improve the construction efficiency and simultaneously ensure the surface smoothness of the whole spliced rigid surface layer after the construction is finished by synchronously constructing the binding layer along with the fixed rigid surface layer segment and reserving a pit for paving the unvulcanized butyl rubber putty layer on the binding layer at the overlapping width part of the movable rigid surface layer segment and the isolation layer.
In summary, the U-shaped bracket is arranged at the lower part of the waterproof layer, and the elastic foam rod is arranged between the waterproof layer and the waterproof additional layer, so that the waterproof layer at the deformation joint can be supported, the waterproof layer is prevented from sagging due to temperature change, the waterproof additional layer can form a drainage arch at the deformation joint, water is guided away in time, water is prevented from being gathered at the deformation joint, the arrangement of the unvulcanized butyl rubber putty layer between the movable rigid surface layer section and the binding layer enables the movable rigid surface layer section to form a structure similar to a slidable simply supported beam at the deformation joint, and a certain deformation amount is provided under the condition that the bearing capacity is met.
The technical solution of the present invention is further described in detail by the accompanying drawings and embodiments.
Drawings
FIG. 1 is a schematic structural view of a deformation joint structure of a flat roof of the invention.
FIG. 2 is a block flow diagram of the method of the present invention.
Fig. 3 is a schematic structural view of the waterproofing membrane profiling tool of the present invention.
Fig. 4 is a top view of fig. 3.
Description of reference numerals:
1-deformation joint; 2-a U-shaped bracket; 3, a waterproof layer;
4-a resilient foam bar; 5-a waterproof additional layer; 6, an isolation layer;
7-a bonding layer; 8-1 — a movable rigid facing segment; 8-2-securing the rigid facing segment;
9-butyl sealant; 10-concrete structural layer; 11-roofing heat insulation layer;
12-a foam concrete slope layer; 13-waterproof leveling layer;
14-unvulcanized butyl rubber putty layer; 15-fire retardant belt;
16-a deformation joint connecting structure of an inner wall ceiling; 17-1-arc briquetting;
17-2-a limiting pressure lever; 17-3-handle.
Detailed Description
As shown in figure 1, last people's flat roofing movement joint structure, including lay on existing roofing structure and span the waterproof construction layer that movement joint 1 set up and lay through anchor coat 7 concatenation formula rigid surface layer on the waterproof construction layer, it has the deformation clearance with movement joint 1 matched with to reserve on anchor coat 7, waterproof construction layer includes by supreme waterproof layer 3 and the isolation layer 6 of laying in proper order on existing roofing structure down, be provided with between waterproof layer 3 and the isolation layer 6 and span the waterproof additional layer 5 that movement joint 1 laid, be provided with in the movement joint 1 and be used for bearing waterproof layer 3's U type bracket 2 and be used for making waterproof additional layer 5 at movement joint 1 department upwards arched elastic foam stick 4, elastic foam stick 4 is located between waterproof layer 3 and the waterproof additional layer 5, concatenation formula rigid surface layer is including spanning the activity rigid surface layer segment 8-1 of movement joint 1 top and connecting at activity rigid surface layer segment 8-1 8-1 both sides fixed rigid surface layer subsection 8-2, be provided with the activity clearance between activity rigid surface layer subsection 8-1 and the fixed rigid surface layer subsection 8-2, the activity clearance between activity rigid surface layer subsection 8-1 and the fixed rigid surface layer subsection 8-2 is filled up butyl sealed glue 9, it has unvulcanized butyl rubber putty layer 14 to bond between activity rigid surface layer subsection 8-1 and the anchor coat 7, be provided with the drainage slope that slopes down gradually to one side of keeping away from movement joint 1 by one side that is close to movement joint 1 on the fixed rigid surface layer subsection 8-2, the slope of drainage slope's slope is not less than 1%.
During the in-service use, through set up U type bracket 2 in waterproof layer 3's lower part, U type bracket 2 arranges in movement joint 1 in succession, and U type bracket 2 can support the waterproof layer 3 of movement joint 1 department, prevents that waterproof layer 3 from producing because of temperature variation and relaxs and sink.
It should be noted that, by arranging the elastic foam rod 4 between the waterproof layer 3 and the waterproof additional layer 5, the elastic foam rod 4 and the waterproof additional layer 5 can form a drainage arch at the deformation joint 1, so that water is guided away in time, and water is prevented from being collected at the deformation joint 1.
In practical use, the unvulcanized butyl rubber putty layer 14 is bonded between the movable rigid surface layer segment 8-1 and the bonding layer 7, and meanwhile, a movable gap is formed between the movable rigid surface layer segment 8-1 and the fixed rigid surface layer segment 8-2, so that the movable rigid surface layer segment 8-1 can form a structure similar to a slidable simply supported beam at the deformation joint 1 by utilizing the characteristics of the unvulcanized butyl rubber putty, and a certain deformation amount is provided under the condition of meeting the bearing capacity.
During the concrete implementation, waterproof layer 3 and existing roofing structure bond fixedly, and waterproof layer 3 and waterproof additional layer 5 bond fixedly, and elasticity foam stick 4 is the pole, and the diameter of elasticity foam stick 4 is 80mm, and the diameter of elasticity foam stick 4 is less than the width of movement joint 1.
In practice, the bonding layer 7 is a concrete bonding layer.
It should be noted that when the movable rigid surface layer segment 8-1 and the unvulcanized butyl rubber putty layer 14 are not firmly adhered, a neoprene-phenolic single-component adhesive can be used for auxiliary adhesion; the waterproof layer 3 is a waterproof roll material bonded on the existing roof structure; the waterproof additional layer 5 is a waterproof roll adhered to the waterproof layer 3, the middle part of the waterproof additional layer 5 is arched, and both sides of the waterproof additional layer 5 are lapped with the waterproof layers 3 on both sides of the deformation joint 1 by a certain width; the isolation layer 6 is a non-woven fabric isolation layer or a felt isolation layer.
In actual use, the gap between the movable rigid surface layer segment 8-1 and the fixed rigid surface layer segment 8-2 is caulked by the butyl sealant 9, so that water can be prevented from permeating, and the movable rigid surface layer segment 8-1 can be ensured to move relative to the fixed rigid surface layer segment 8-2.
During concrete implementation, through set up the drainage slope on fixed rigid surface layer segment section 8-2, can effectively get rid of the water at concatenation formula rigid surface layer top, prevent that rivers from gathering at concatenation formula rigid surface layer top, and then can effectively avoid 1 seepage of movement joint, can effectively improve the water-proof effects of last people's flat roofing.
In the present embodiment, the width of the deformation gap between the joining layers 7 is equal to the width of the deformation joint 1.
In specific implementation, the upper surface of the waterproof additional layer 5 which is arched upwards at the deformation joint 1 is tightly attached to the lower surface of the movable rigid surface layer segment 8-1, and the width of a movable gap between the movable rigid surface layer segment 8-1 and the fixed rigid surface layer segment 8-2 is 20 mm.
In this embodiment, the existing roof structure sequentially includes, from bottom to top, a concrete structure layer 10, a roof insulation layer 11, a foam concrete slope layer 12, and a waterproof leveling layer 13.
In this embodiment, both sides of the movable rigid surface layer segment 8-1 are respectively overlapped on the bonding layers 7 on both sides of the deformation joint 1, and the fixed rigid surface layer segment 8-2 is fixedly connected with the bonding layers 7.
In actual use, the width of the movable rigid facing segment 8-1 is greater than the width of the deformation joint 1, and the overlapping width between the movable rigid facing segment 8-1 and the bonding layer 7 on both sides of the deformation joint 1 is equal.
In this embodiment, be provided with back-fire relief area 15 in movement joint 1, back-fire relief area 15 is located the below of U type bracket 2.
In actual use, fire barrier strips 15 are connected between the concrete structural layers 10 on either side of the deformation joint 1.
In this embodiment, the bottom of the deformation joint 1 is provided with an inner wall ceiling deformation joint connecting structure 16, and the inner wall ceiling deformation joint connecting structure 16 spans below the deformation joint 1.
During the in-service use, the bottom of movement joint 1 is provided with interior wall ceiling movement joint connection structure 16, and the top of movement joint 1 covers has activity rigidity surface course section 8-1, has set gradually U type bracket 2, waterproof layer 3, elastic foam stick 4, waterproof additional layer 5 and isolation layer 6 in the movement joint 1 from bottom to top.
In specific implementation, the inner wall ceiling deformation joint connecting structure 16 is an aluminum alloy plate, and the inner wall ceiling deformation joint connecting structure 16 is fastened and connected with the concrete structure layers 10 on two sides of the deformation joint 1 through bolts.
In this embodiment, the U-shaped bracket 2 is a U-shaped galvanized sheet metal holder with flange plates on two sides, the flange plates on two sides of the U-shaped bracket 2 are respectively attached to the upper surface of the existing roof structure and are arranged, and the opening of the U-shaped bracket 2 is arranged upward.
In actual use, the width of the flange plates on both sides of the U-shaped bracket 2 is preferably 130mm, and the flange plates of the U-shaped bracket 2 are arranged to be tightly attached to the upper surface of the waterproof leveling layer 13.
In specific implementation, the thickness of the U-shaped bracket 2 is 0.6mm, the depth of the groove on the U-shaped bracket 2 is 45mm, the width of the deformation joint 1 is 100 mm-250 mm, and the maximum width of the groove on the U-shaped bracket 2 is 20mm smaller than the width of the deformation joint 1.
In this embodiment, the waterproof layer 3 is closely attached to the upper surface of the U-shaped bracket 2 to form a U-shaped groove for mounting the elastic foam rod 4, and the isolation layer 6 is closely attached to the upper surfaces of the waterproof layer 3 and the waterproof additional layer 5.
In actual use, waterproof layer 3 pushes down in U type bracket 2 at movement joint 1 for waterproof layer 3 has reply deformability.
The construction method of the deformation joint structure of the accessible flat roof as shown in figure 2 comprises the following steps:
step one, construction preparation: cleaning floating sand and loose sundries on the surface of the waterproof leveling layer 13, and chiseling and removing projected hard objects on the surface of the waterproof leveling layer 13;
when the waterproof leveling layer 13 is actually used, a broom is used for cleaning floating sand and loose sundries on the surface of the waterproof leveling layer 13, a hand hammer or a chisel is used for chiseling and removing hard objects protruding from the surface of the waterproof leveling layer 13, the surface of the waterproof leveling layer 13 is guaranteed to be smooth, and no visible protruding objects or holes exist; then 1 piece of 1m by 1m coiled material is put on the place which can be directly irradiated by sunlight on the waterproof leveling layer 13 for 2 to 3 hours, no water drops are condensed on the coiled material, and the next procedure can be carried out.
Step two, installing a U-shaped bracket: the method comprises the following steps that U-shaped brackets 2 are laid from two ends of a deformation joint 1 to the middle of the deformation joint 1, and two adjacent U-shaped brackets 2 are arranged in a lap joint mode;
in practical use, the overlapping length between two adjacent U-shaped brackets 2 is 10cm, when the U-shaped brackets 2 are overlapped and laid, a method of laying after and pressing before is adopted, and when the U-shaped brackets are laid to the middle of the deformation joint 1, the last U-shaped bracket 2 is pressed on the U-shaped brackets 2 at two sides.
Step three, constructing a waterproof layer: laying a plurality of layers of waterproof rolls on the waterproof leveling layer 13 from one side to the other side of the deformation joint 1, and pressing the waterproof rolls at the position of the deformation joint 1 into the U-shaped bracket 2 by using a waterproof roll profiling tool to form a waterproof layer 3;
in actual use, before the waterproof layer 3 is constructed, firstly, a 60cm popup line and a 120cm popup line are measured at one side of the deformation joint 1 from the edge; then measuring a 30cm popup line on the other side of the deformation joint 1 from the edge.
When the waterproof layer 3 is constructed, the waterproof rolls are laid from one side where the 60cm through line and the 120cm through line are bounced, and the adjacent two waterproof rolls are alternately laid and pasted according to the 60cm through line and the 120cm through line, so that the waterproof layer 3 laid and pasted on one side of the deformation joint 1 forms a seam similar to a horse tooth rubbing, and the laying and pasting quality of the waterproof layer 3 can be effectively improved.
When the waterproof layer 3 is constructed, two adjacent waterproof rolls are overlapped, and when the overlapped part of the waterproof rolls is just positioned at the deformation joint 1, the smooth galvanized steel plate with the thickness of 2mm, the width of 20cm and the length of 120cm is used for assisting the overlapping at the deformation joint 1.
Step four, water closing test: arranging water retaining ridges on the waterproof layers 3 on the two sides of the deformation joint 1, storing water between the two water retaining ridges for a water closing test, executing the fifth step when the waterproof layer 3 does not leak 48 hours after the water closing test is started, and removing the constructed waterproof layer 3 and circulating the third step when the waterproof layer 3 leaks;
in actual use, when a water closing test is carried out, the water storage depth between the two water retaining sills is at least 25 mm.
Step five, constructing a waterproof additional layer and filling the elastic foam rod, wherein the process is as follows:
step 501, unilateral construction of a waterproof additional layer: laying a plurality of layers of waterproof rolls on the waterproof layer 3 at the deformation joint 1 to form a waterproof additional layer 5, and simultaneously bonding and fixing the waterproof additional layer 5 positioned on one side of the deformation joint 1 with the waterproof layer 3;
during the in-service use, the width that waterproof additional layer 5 set up in movement joint 1 both sides is 30cm, when carrying out waterproof additional layer 5's construction, before filling up elasticity foam stick 4 in movement joint 1, fixes waterproof additional layer 5's one side at first, guarantees waterproof additional layer 5's construction quality, and then the opposite side of waterproof additional layer 5 is temporarily unfixed, has the packing that utilizes elasticity foam stick 4.
When the additional waterproof layer 5 is applied, the two waterproof rolls are lapped each other, and lapping is assisted by a plain galvanized steel sheet 2mm thick, 20cm wide, and 120cm long.
Step 502, filling elastic foam rods in deformation joints: lifting the side, which is not bonded with the waterproof layer 3, of the waterproof additional layer 5, and pressing the waterproof layer 3 into the groove in the U-shaped bracket 2 to fill the elastic foam rod 4;
during the in-service use, after elasticity foam stick 4 fills and impresses to the recess that forms behind U type bracket 2 on waterproof layer 3 in, elasticity foam stick 4 protrusion to waterproof layer 3's top, and then covers waterproof additional layer 5 back on elasticity foam stick 4 gently, with the waterproof additional layer 5 and the waterproof layer 3 bonding of 1 one side of movement joint fixed banding.
Step 503, edge sealing construction of the waterproof additional layer: putting down the side, which is not bonded with the waterproof layer 3, of the waterproof additional layer 5, and bonding and fixing the side with the waterproof layer 3 on the other side of the deformation joint 1; the waterproof additional layer 5 is arched upwards at the deformation joint 1;
during the in-service use, when carrying out the banding construction of waterproof additional layer 5, adopt the pressure thick stick to sticis waterproof additional layer 5 one side that does not bond on 3 at the border 50mm department apart from movement joint 1, then it is fixed with waterproof additional layer 5 and 3 bonding of waterproof layer.
Step six, construction of a spliced rigid surface layer, comprising the following steps:
step 601, isolation layer construction: a plurality of layers of non-woven fabrics or linoleum are laid on the waterproof layer 3 to form an isolation layer 6, and the isolation layer 6 covers the upper part of the waterproof additional layer 5;
step 602, constructing a movable rigid surface layer segment and a fixed rigid surface layer segment: paving bricks on the isolation layer 6 on two sides of the deformation joint 1 by adopting concrete to form a fixed rigid surface layer segment 8-2, wherein the concrete between the fixed rigid surface layer segment 8-2 and the isolation layer 6 is a bonding layer 7;
when the fixed rigid surface layer segment 8-2 is laid, the lapping width of the movable rigid surface layer segment 8-1 and the isolation layer 6 is reserved on the two sides of the deformation joint 1, and a depression for laying the unvulcanized butyl rubber putty layer 14 is reserved on the bonding layer 7 at the lapping width of the movable rigid surface layer segment 8-1 and the isolation layer 6;
after the bonding layer 7 is dried, paving unvulcanized butyl rubber putty in a reserved recess on the bonding layer 7 to form an unvulcanized butyl rubber putty layer 14, and meanwhile, enabling the movable rigid surface layer segment 8-1 to cross the deformation joint 1 and be paved above the unvulcanized butyl rubber putty layer 14;
in actual use, when the construction for fixing the rigid surface layer section 8-2 is carried out, the width of a seam, parallel to the deformation joint direction, of the brick in the rigid surface layer section 8-2 is not less than 20 mm; the width of the seam of the bricks in the fixed rigid surface layer segment 8-2, which is vertical to the direction of the deformation joint, is arranged according to requirements.
It should be noted that the joining layer 7 is completed simultaneously with the construction of the fixed rigid facing segments 8-2.
When the concrete implementation is carried out, the depth of the reserved dent on the bonding layer 7 is 3mm, namely the thickness of the unvulcanized butyl rubber putty layer 14 is 3mm, and cement is spread on the reserved dent on the bonding layer 7 for polishing.
Step 603, caulking by using butyl sealant: filling butyl sealant 9 into a movable gap between the movable rigid surface layer segment 8-1 and the fixed rigid surface layer segment 8-2 for caulking;
seventhly, constructing deformation joints of the inner wall ceiling: a fire retardant belt 15 is installed in a deformation joint 1 at the position of a concrete structure layer 10, and meanwhile, an aluminum alloy panel is connected to the bottom of the deformation joint 1 to form an inner wall ceiling deformation joint connecting structure 16.
In this embodiment, during the construction waterproof layer in step three, at first with the waterproofing membrane and the waterproof screed-coat 13 bonding fixation of deformation joint 1 one side, then adopt waterproofing membrane die mould instrument to impress the waterproofing membrane of deformation joint 1 position department to U type bracket 2 in, at last again with the waterproofing membrane and the waterproof screed-coat 13 bonding fixation of deformation joint 1 opposite side.
During the in-service use, adopt waterproofing membrane die mould instrument to impress the waterproofing membrane of 1 position departments of movement joint to U type bracket 2 in the back, push down the waterproofing membrane with the depression bar earlier and go up the one side that does not bond with waterproof leveling layer 13, then it is fixed with waterproofing membrane and waterproof leveling layer 13 bonding, ensure the planarization of waterproof layer 3 construction.
In the embodiment, as shown in fig. 3 and 4, the waterproof roll profiling tool comprises an arc-shaped pressing block 17-1 matched with the U-shaped bracket 2 and two limiting pressing rods 17-2 fixed at the upper parts of two sides of the arc-shaped pressing block 17-1 respectively, and a handle 17-3 is arranged at the top of the arc-shaped pressing block 17-1.
During the in-service use, when adopting waterproofing membrane die mould instrument to impress the waterproofing membrane of movement joint 1 position department in U type bracket 2, arc briquetting 17-1 is impressed to U type bracket 2 in, and two spacing depression bars 17-2 are pressed and are established on the waterproof layer 3 of movement joint 1 both sides, guarantee that waterproof layer 3 is laid at movement joint 1 and is pasted smoothly, and the whole waterproofing membrane die mould instrument of constructor removal is convenient for to handle 17-3.
The above description is only a preferred embodiment of the present invention, and is not intended to limit the present invention, and all simple modifications, changes and equivalent structural changes made to the above embodiment according to the technical spirit of the present invention still fall within the protection scope of the technical solution of the present invention.
Claims (9)
1. A construction method of a deformation joint structure of a accessible flat roof is characterized by comprising the following steps: go up people's flat roofing movement joint structure including lay on existing roofing structure and span the waterproof construction layer that movement joint (1) set up and lay through anchor coat (7) concatenation formula rigidity surface course on the waterproof construction layer, reserve on anchor coat (7) and have the deformation clearance with movement joint (1) matched with, waterproof construction layer includes waterproof layer (3) and isolation layer (6) of laying on existing roofing structure by supreme in proper order down, be provided with between waterproof layer (3) and isolation layer (6) and span waterproof additional layer (5) that movement joint (1) was laid, be provided with U type bracket (2) that are used for bearing waterproof layer (3) in movement joint (1) and be used for making waterproof additional layer (5) locate elastic foam stick (4) that upwards rise the arch in movement joint (1), elastic foam stick (4) are located between waterproof layer (3) and waterproof additional layer (5), the splicing type rigid surface layer comprises a movable rigid surface layer segment (8-1) stretching over a deformation joint (1) and fixed rigid surface layer segments (8-2) connected to two sides of the movable rigid surface layer segment (8-1), a movable gap is arranged between the movable rigid surface layer segment (8-1) and the fixed rigid surface layer segment (8-2), a butyl sealant (9) is filled in the movable gap between the movable rigid surface layer segment (8-1) and the fixed rigid surface layer segment (8-2), an unvulcanized butyl rubber putty layer (14) is bonded between the movable rigid surface layer segment (8-1) and a binding layer (7), and a drainage slope which gradually inclines downwards from one side close to the deformation joint (1) to one side far away from the deformation joint (1) is arranged on the fixed rigid surface layer segment (8-2), the gradient of the drainage slope is not less than 1%;
the method comprises the following steps:
step one, construction preparation: cleaning floating sand and loose impurities on the surface of the waterproof leveling layer (13), and chiseling and removing convex hard objects on the surface of the waterproof leveling layer (13) simultaneously;
step two, installing a U-shaped bracket: paving U-shaped brackets (2) from two ends of the deformation joint (1) to the middle of the deformation joint (1);
step three, constructing a waterproof layer: paving a waterproof coiled material on the waterproof leveling layer (13) from one side of the deformation joint (1) to the other side of the deformation joint, and pressing the waterproof coiled material at the position of the deformation joint (1) into the U-shaped bracket (2) by adopting a waterproof coiled material profiling tool to form a waterproof layer (3);
step four, water closing test: arranging water retaining ridges on the waterproof layers (3) on the two sides of the deformation joint (1), storing water between the two water retaining ridges for a water closing test, and after the water closing test is started for 48 hours, when the waterproof layers (3) do not leak, executing a fifth step, when the waterproof layers (3) leak, removing the constructed waterproof layers (3) and circulating a third step;
step five, constructing a waterproof additional layer and filling an elastic foam rod: paving waterproof coiled materials on the waterproof layer (3) at the deformation joint (1) to form a waterproof additional layer (5), and simultaneously bonding and fixing the waterproof additional layer (5) positioned on the two sides of the deformation joint (1) and the waterproof layer (3); the waterproof layer (3) is pressed into a groove on the U-shaped bracket (2) and is filled with an elastic foam rod (4), and the upward arched inner surface of the waterproof additional layer (5) is attached to the elastic foam rod (4);
step six, construction of a spliced rigid surface layer, comprising the following steps:
step 601, isolation layer construction: non-woven fabrics or felts are laid on the waterproof layer (3) and the waterproof additional layer (5) to form an isolation layer (6);
step 602, constructing a movable rigid surface layer segment and a fixed rigid surface layer segment: paving brick blocks on the isolation layer (6) on two sides of the deformation joint (1) by adopting concrete to form a fixed rigid surface layer segment (8-2), wherein the concrete between the fixed rigid surface layer segment (8-2) and the isolation layer (6) is a bonding layer (7);
meanwhile, a butyl rubber putty layer (14) is laid on the binding layer (7) on the two sides of the deformation joint (1), and brick blocks are laid on the butyl rubber putty layer (14) to form a movable rigid surface layer segment (8-1); wherein a movable gap is arranged between the movable rigid surface layer segment (8-1) and the fixed rigid surface layer segment (8-2), and the movable rigid surface layer segment (8-1) crosses the deformation joint (1);
step 603, caulking by using butyl sealant: filling butyl sealant (9) into a movable gap between the movable rigid surface layer segment (8-1) and the fixed rigid surface layer segment (8-2) for caulking;
seventhly, constructing deformation joints of the inner wall ceiling: a fire retardant belt (15) is installed in a deformation joint (1) at the concrete structure layer (10), and an aluminum alloy panel is connected to the bottom of the deformation joint (1) to form an inner wall ceiling deformation joint connecting structure (16).
2. The construction method of the deformation joint structure of the accessible flat roof according to claim 1, characterized in that: the existing roof structure sequentially comprises a concrete structure layer (10), a roof heat insulation layer (11), a foam concrete slope finding layer (12) and a waterproof leveling layer (13) from bottom to top.
3. The construction method of the deformation joint structure of the accessible flat roof according to claim 1, characterized in that: two sides of the movable rigid surface layer segment (8-1) are respectively overlapped on the binding layer (7) on two sides of the deformation joint (1), and the fixed rigid surface layer segment (8-2) is fixedly connected with the binding layer (7).
4. The construction method of the deformation joint structure of the accessible flat roof according to claim 1, characterized in that: be provided with back-fire relief area (15) in movement joint (1), back-fire relief area (15) are located the below of U type bracket (2).
5. The construction method of the deformation joint structure of the accessible flat roof according to claim 1 is characterized in that: the deformation joint connecting structure is characterized in that an inner wall ceiling deformation joint connecting structure (16) is arranged at the bottom of the deformation joint (1), and the inner wall ceiling deformation joint connecting structure (16) stretches across the lower portion of the deformation joint (1).
6. The construction method of the deformation joint structure of the accessible flat roof according to claim 1, characterized in that: the U-shaped bracket (2) is a U-shaped galvanized iron support with flange plates arranged on two sides, the flange plates on two sides of the U-shaped bracket (2) are respectively attached to the upper surface of an existing roof structure and are arranged, and the opening of the U-shaped bracket (2) is arranged upwards.
7. The construction method of the deformation joint structure of the accessible flat roof according to claim 6, characterized in that: waterproof layer (3) hug closely the upper surface cloth of U type bracket (2) and establish the back and form the U type recess that supplies elasticity foam stick (4) to install, waterproof layer (3) and waterproof additional layer (5) are hugged closely in isolation layer (6) upper surface cloth and are established.
8. The construction method of the deformation joint structure of the accessible flat roof according to claim 1 is characterized in that: when the waterproof layer is constructed in the third step, firstly, the waterproof coiled material on one side of the deformation joint (1) is fixedly bonded with the waterproof leveling layer (13), then the waterproof coiled material at the position of the deformation joint (1) is pressed into the U-shaped bracket (2) by adopting a waterproof coiled material profiling tool, and finally, the waterproof coiled material on the other side of the deformation joint (1) is fixedly bonded with the waterproof leveling layer (13).
9. The construction method of the deformation joint structure of the accessible flat roof according to claim 1, characterized in that: the waterproof coiled material profiling tool comprises an arc-shaped pressing block (17-1) matched with the U-shaped bracket (2) and two limiting pressing rods (17-2) fixed to the upper portions of the two sides of the arc-shaped pressing block (17-1) respectively, and a handle (17-3) is arranged at the top of the arc-shaped pressing block (17-1).
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