CN218814774U - Warehouse roof structure - Google Patents

Abstract

The utility model provides a warehouse roof structure, which comprises a roof support component, wherein the roof support component is a shuttle-shaped steel roof truss; the roof structure is formed by roof slope finding layers which are supported on the roof supporting component, and a plurality of V-shaped structures are formed by the roof slope finding layers; the air barrier film is positioned on the roof structure, is parallel to the ridge direction and is a self-adhesive enhanced air barrier film; the heat insulation layer is positioned above the gas barrier film and comprises a first heat insulation layer and a second heat insulation layer from top to bottom, and the thickness of the first heat insulation layer is smaller than that of the second heat insulation layer; the PVC waterproof roll layer penetrates through the heat preservation layer and the air isolation film through the screw rod and then is connected with the roof structure. The utility model discloses a to the improvement and the increase of structure, ensured warehouse roof structure's waterproof performance for whole structure construction convenience, the effect is better.

Description

Warehouse roof structure

Technical Field

The utility model relates to a waterproofing membrane roofing design technical field especially relates to warehouse roof structure.

Background

The quality of roof waterproof is the most critical factor of whether the roof leaks, and the roof leakage not only influences the normal use of the building and erodes the main structure body of the building, but also further shortens the service life of the building. By combining the construction experience of the project, the main reason analysis of the water leakage possibility of the waterproof coiled material roof is as follows:

(1) The aluminum pressing strips at the connecting positions of the gable wall and the roof panel, such as the sandwich panel or the aerated concrete block, are not firm in sealing or the sealant is aged and falls off, and rainwater leaks through the wall surface;

(2) Wind-resistant connection strength and sealing performance between ventilation shaft, pipeline and other roof equipment and a roof panel are insufficient, and gaps are easy to form to cause leakage;

(3) The drainage slope of the roof and the gutter, the drainage line, the flow of the drainage pipe and the like are unreasonable, the drainage of the roof is not smooth, and the roof is seriously accumulated with water, so that the leakage is caused;

(4) When the roof is constructed, the roof is randomly trodden, the protection consciousness of the finished product is light, the damaged part is not processed in time or not processed in place, and later rainwater leaks from the damaged part;

(5) The water content before and after the construction of the heat-insulating layer is more, and steam can not be discharged in time without arranging an exhaust port, so that the waterproof layer is expanded and broken, and the leakage of a roof is caused;

(6) Whether the treatment of key parts such as the details of the nodes is in place or not, and whether the operation level and quality assurance measures of construction managers are in place or not are also key factors influencing whether the roof leaks or not.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a warehouse roof structure, through improvement and increase to the structure, guaranteed warehouse roof structure's waterproof performance for whole structure construction convenience, the effect is better.

In order to achieve the above purpose, the present invention is implemented by the following technical solutions.

The roof structure of a warehouse, including,

the roof support assembly is a shuttle-shaped steel roof truss;

the roof supporting component is provided with a roof slope finding layer which forms a plurality of V-shaped structures;

the air barrier film is positioned on the roof structure, is parallel to the ridge direction and is a self-adhesive enhanced air barrier film;

the heat insulation layer is positioned above the gas barrier film and comprises a first heat insulation layer and a second heat insulation layer from top to bottom, and the thickness of the first heat insulation layer is smaller than that of the second heat insulation layer;

the PVC waterproof roll layer penetrates through the heat insulation layer and the air barrier film through the screw rod and then is connected with the roof structure.

The steel roof truss structure has multiple forms, mainly divide into triangle-shaped roof truss and trapezoidal roof truss, according to the slope and the span requirement of factory building, chooses different roof truss forms for use, and the fusiformis roof truss is a form of light-duty steel roof truss, and between the advantage of triangle-shaped and trapezoidal roof truss, it is low, the space rigidity is good to have the cross-section focus, is applicable to the roof structure of large-span, roofing slope mild, no purlin.

In this technical scheme, make full use of roofing structure seeks the slope, if the slope is roofing drainage, waterproof first basis, the advantage of the structure drainage of choosing for use lies in reducing the use of material, if make flat roofing, all utilize the material to seek the slope, firstly extravagant material, but use the durability not good. The roof slope is designed according to the local water discharge, and the requirement of the local 50-year maximum daily rainfall can be met.

Among this technical scheme, the roofing design is that the slope is looked for to the structure, and not the roof layer of looking for the slope, and the slope is looked for to the structure means exactly utilizes the drainage ramp that roof truss and roofing structure self slope formed. The method is different from the slope finding of flat roof materials, so that the heat preservation is better realized.

In the technical scheme, the two heat-insulating layers are slightly different in material, the hardness of the lower heat-insulating layer is smaller than that of the upper heat-insulating layer, the main reason is that the engineering roof is a manned roof, and the later stage of the upper heat-insulating layer directly bears load, so that the hardness needs to be higher.

As a further improvement, the roofing structure is trapezoidal profiled steel sheet layer, through the connecting steel sheet overlap joint between the trapezoidal profiled steel sheet layer of a plurality of.

Trapezoidal profiled steel sheet is also comparatively extensive at present at home in the application, and in this technical scheme, the roofing adopts 1mm thick trapezoidal profiled steel sheet of galvanized zinc to lay, and the purpose is to form better connected mode, ensures the integration of roofing structure.

As a further improvement of the utility model, the periphery of the trapezoidal profiled steel sheet layer is provided with a galvanized layer with the thickness of 0.5-1.5 mm.

The zinc coating is used for preventing the surface of the steel plate from being corroded to prolong the service life of the steel plate, and the surface of the steel plate can be prevented from being painted for corrosion prevention in the later period, so that the method is an economical and effective rust prevention method which is often adopted.

In roofing applications, the main advantages are represented in the following aspects:

1) In a roof without a purlin system, the profiled steel sheet and the roof truss are connected through self-tapping screws, so that the horizontal force in the longitudinal direction and the transverse direction of the roof can be effectively transmitted, and the integral rigidity of the roof, namely the stressed skin effect, is improved.

2) The profiled steel sheet has light dead weight and low manufacturing cost;

3) Easy installation and short construction period.

As a further improvement, the trough is formed between the connecting steel plates, and the third heat preservation layer with the length not less than 250mm is arranged at the trough.

Among this technical scheme, because the profiled sheet position such as ridge, gutter, ventilating shaft, battenboard parapet handing-over, pipeline appear "cold bridge" phenomenon easily, these positions need to increase at profiled sheet trough and lay not less than 250mm rock wool board and keep warm.

As a further improvement, the third heat-insulating layer is provided with an enhancement layer, and the thickness of the enhancement layer is not less than 0.7mm.

Among this technical scheme, use thickness to be no less than 0.7mm reinforcing steel plate to cover in rock wool board top, its purpose realizes the heat preservation of metal level, and reinforcing steel plate hardness geometric proportion is stronger, and then can realize keeping warm in, consolidate.

As a further improvement of the utility model, from the top to the bottom, the gas barrier film includes aluminized film layer, enhancement layer, paste layer and protection rete in proper order.

In this embodiment, the gas barrier film is composed of a protective film, an adhesive layer, and a top layer (aluminum-plated film) in this order from bottom to top. The adhesive layer is added, so that the adhesive layer can be well adhered to the heat insulation layer, a lower closed space is formed better, and isolation is realized.

As a further improvement of the utility model, an enhancement layer is further included between the aluminum plating film layer and the pasting layer.

In the technical scheme, the lower glass fiber is positioned between the bonding layer and the aluminizer, so that the strength of the gas barrier film is improved.

As a further improvement, the heat preservation layer is fixed on the waterproof layer through a plurality of screws, and the plurality of screws are arranged in a quincunx shape.

In this technical scheme, plum blossom type is exactly utilizing the stable effect of triangle-shaped, compares in the rectangle and arranges, can make the heat preservation fixed more firm, with the screw fixation in the triangle-shaped structure. Specifically, the screw is a self-drilling screw with the length of 4.8mm or 5.5mm, the screw further comprises a plastic sleeve, the length of the plastic sleeve is determined according to the thickness of the heat insulation layer, the length is generally 20-350mm, the plastic sleeve is composed of an end with the diameter of 50mm and a hollow pipe with the diameter of 10mm, the bottom of the plastic sleeve is designed to be in a closed-up form, the plastic sleeve is made of high-stability polymer, and the plastic sleeve is mainly used for heat insulation of roofs or concrete structure wall surfaces.

As the utility model discloses a further improvement still includes the insulation construction who stretches out the pipeline, insulation construction includes PVC waterproof roll material layer, the cotton layer of heat preservation, L type galvanized steel sheet back up coat and gas barrier layer from outer to interior in proper order, PVC waterproof roll material layer highly be higher than the height on the cotton layer of heat preservation.

Among this technical scheme, because during the construction, the weather is cold in winter and hot in summer, in order to prevent that "cold bridge" phenomenon from appearing in the roofing department in the pipeline, wrap up with the rock wool board that thickness is no less than 100mm in the 30cm within range of roofing, the rock wool board uses the width 50 mm's hoop to tighten up fixedly, and it is tight to fill up with sealing material to close up at the top.

As the utility model discloses a further improvement, still include the intraoral pipeline department of falling into water, pipeline department of falling into water is from last to down, has set gradually PVC waterproof roll material layer, the cotton reinforced layer of stereoplasm heat preservation, the cotton layer of ordinary heat preservation, L type galvanized steel plate reinforced layer, the cotton filling layer of bottom heat preservation, gas barrier layer and sealing layer.

In the technical scheme, when the construction environment is low, the structures are added, so that the smooth progress of construction at a low temperature can be realized, and the construction progress is ensured.

Drawings

Fig. 1 is an assembly view of a warehouse roof structure provided by the present invention;

fig. 2 is a schematic structural view of a warehouse roof structure provided by the present invention;

fig. 3 is an assembly diagram between the trapezoidal profiled steel sheet layers provided by the present invention;

fig. 4 is a schematic structural view of the roof flashing structure provided by the present invention;

fig. 5 is a schematic structural view of the heat insulation structure extending out of the pipeline provided by the present invention;

fig. 6 is a schematic structural view of a downpipe provided by the present invention;

in the figure:

100. a roof support assembly; 200. a roofing structure; 210. connecting steel plates; 300. a gas barrier film; 400. a heat-insulating layer; 410. a first insulating layer; 420. a second insulating layer; 500. a PVC waterproof coil layer; 600. a third insulating layer; 610. a reinforcing layer; 700. a heat preservation structure; 710. a heat insulation cotton layer; 720. a galvanized steel sheet layer; 730. a gas barrier layer; 800. a downpipe; 810. a heat preservation assembly; 820. a fastener; 830. a sealing layer; 900. a sandwich panel; 910. a water outlet.

Detailed Description

The present invention will be described in detail with reference to the embodiments shown in the drawings, but it should be understood that these embodiments are not intended to limit the present invention, and that the functional equivalents, methods, or structural equivalents thereof, or substitutions thereof by those skilled in the art are all within the scope of the present invention.

The roof structure of a warehouse, including,

the roof support assembly 100, wherein the roof support assembly 100 is a shuttle-shaped steel roof truss;

the roof structure 200 is formed by supporting a roof slope finding structure on the roof supporting component 100, and the roof slope finding layer forms a plurality of V-shaped structures;

the air barrier film 300 is positioned on the roof structure 200, the air barrier film 300 is parallel to the ridge direction, and the air barrier film 300 is a self-adhesive enhanced air barrier film;

the heat insulation layer 400 is positioned above the air barrier film 300, the heat insulation layer 400 comprises a first heat insulation layer 410 and a second heat insulation layer 420 from top to bottom, and the thickness of the first heat insulation layer 410 is larger than that of the second heat insulation layer 420;

PVC waterproof roll material layer 500, PVC waterproof roll material layer 500 passes through the screw rod and pierces through heat preservation 400, gas barrier membrane 300 back, is connected with roofing structure 200.

The steel roof truss structure has multiple forms, mainly divide into triangle-shaped roof truss and trapezoidal roof truss, according to the slope and the span requirement of factory building, chooses different roof truss forms for use, and the fusiformis roof truss is a form of light-duty steel roof truss, and between the advantage of triangle-shaped and trapezoidal roof truss, it is low, the space rigidity is good to have the cross-section focus, is applicable to the roof structure of large-span, roofing slope mild, no purlin.

In the embodiment, the roof structure is fully utilized to find the slope, if the slope is the primary foundation of roof drainage and water resistance, the selected structure drainage has the advantage of reducing the use of materials, and if the flat roof is made, all materials are utilized to find the slope, so that the materials are wasted, and the durability is poor. The roof slope is designed according to the local water discharge, and the requirement of the local 50-year maximum daily precipitation can be met.

In this embodiment, the roofing design is that the structure finds the slope, and not roof slope layer, and the slope is found to the structure means utilizes the drainage ramp that roof truss and roofing structure self slope formed. The heat insulation structure is different from a flat roof in slope finding, so that heat insulation and the like are better realized.

In the embodiment, the two heat-insulating layers are slightly different in material, and the hardness of the lower heat-insulating layer is smaller than that of the upper heat-insulating layer, mainly because the engineering roof is a maner roof and the upper heat-insulating layer directly bears load at the later stage, so the hardness needs to be higher.

Example 2

In this embodiment, the correlation structure is refined.

Referring to fig. 2, in this embodiment, the roof structure 200 is a trapezoidal profiled steel sheet layer, and a plurality of trapezoidal profiled steel sheet layers are overlapped through a connecting steel sheet 210.

Trapezoidal profiled steel sheet 200 is also comparatively extensive at present at home, and in this embodiment, the roofing adopts 1mm thick galvanized trapezoidal profiled steel sheet to lay, and the purpose is to form better connected mode, ensures the integration of roofing structure.

Further, a zinc coating (not shown in the figure) with the thickness of 0.5-1.5mm is arranged on the periphery of the trapezoidal profiled steel sheet layer.

The zinc coating is used for preventing the surface of the steel plate from being corroded to prolong the service life of the steel plate, and the surface of the steel plate can be prevented from being painted for corrosion prevention in the later period, so that the method is an economical and effective rust prevention method which is often adopted.

In roofing applications, the main advantages are represented in the following aspects:

1) In a roof without purlins, after the profiled steel sheets and the roof truss are connected through self-tapping screws, the horizontal force in the longitudinal direction and the transverse direction of the roof can be effectively transmitted, and the integral rigidity of the roof, namely the stressed skin effect, is improved.

2) The profiled steel sheet has light dead weight and low manufacturing cost;

3) Easy installation and short construction period.

Referring to fig. 3, wave troughs are formed between the connection steel plates 210, and a third insulating layer 600 with a length not less than 250mm is disposed at the wave troughs.

In the technical scheme, the cold bridge phenomenon easily occurs at the positions of the profiled steel sheet, such as ridge, gutter, ventilation shaft, battenboard parapet connection, pipeline and the like, and the positions need to be additionally paved with rock wool plates not shorter than 250mm at the wave troughs of the profiled steel sheet for heat preservation.

Furthermore, a reinforcing layer 610 is arranged on the third insulating layer 600, and the thickness of the reinforcing layer 610 is not less than 0.7mm.

In this embodiment, use thickness to be no less than 0.7mm reinforcing steel plate to cover in rock wool board top, its purpose realizes the heat preservation of metal level, and reinforcing steel plate hardness etc. than stronger, and then can consolidate when realizing keeping warm.

Further, from top to bottom, the gas barrier film 300 sequentially includes an aluminum-plated film layer, a reinforcing layer, an adhesive layer, and a protective film layer.

In this embodiment, the gas barrier film is composed of a protective film, an adhesive layer, and a top layer (aluminum-plated film) in this order from bottom to top. The sticking layer is added, so that the adhesive tape can be well stuck on the heat insulation layer, a closed space below the adhesive tape is formed better, and isolation is realized.

In order to increase the strength, a reinforcing layer is further arranged between the aluminum-plated film layer and the adhesive layer.

In this embodiment, the lower glass fiber is located between the adhesive layer and the aluminized film, so as to improve the strength of the gas barrier film.

Further, the heat insulating layer 400 is fixed to the waterproof layer by a plurality of screws, and the plurality of screws are arranged in a quincunx pattern.

In this embodiment, the quincunx is that the effect that utilizes triangle-shaped stable is compared with the rectangle and is arranged, can make the heat preservation fixed more firm, with the screw fixation in the triangle-shaped structure.

Specifically, in this embodiment, the screw is a 4.8mm or 5.5mm self-drilling screw, and further includes a plastic sleeve outside the self-drilling screw, the length of the plastic sleeve is determined according to the thickness of the heat insulation layer, generally the length is 20-350mm, the plastic sleeve is composed of an end with a diameter of 50mm and a hollow tube with a diameter of 10mm, the bottom is designed to be in a closed-up form, and the material is a polymer with high stability, and the screw is mainly used for heat insulation of a roof or a concrete structure wall surface.

Referring to fig. 5, the thermal insulation structure 700 extending out of the pipeline further includes a thermal insulation cotton layer 710, a galvanized steel sheet layer 720 and an air-barrier layer 730 in sequence from inside to outside, and the height of the air-barrier layer 730 is higher than that of the thermal insulation cotton layer 710.

Among this technical scheme, because during the construction, the weather is cold in winter and hot in summer, in order to prevent that "cold bridge" phenomenon from appearing in roofing department in the pipeline, the rock wool board of being no less than 100mm with thickness is wrapped up at the 30cm within range of roofing, and the rock wool board uses width 50 mm's hoop to tighten up fixedly, and it is tight to inlay with sealing material to close the head in the top.

Referring to fig. 6, the thermal insulation structure 810 is further provided at the outer periphery of the downpipe 800 in the downpipe opening, a fastening member 820 penetrating the thermal insulation structure 810, and a sealing layer 830 provided at the outer side of the thermal insulation structure 810.

The water falling pipe 800 is provided with a reinforcing layer 810, a waterproof layer 820 and a sealing layer 830 in sequence from inside to outside.

In the embodiment, when the construction environment is low, the structures are added, so that the smooth progress of construction at a low temperature can be realized, and the construction progress is ensured.

Example 3

In this embodiment, description is mainly given with reference to specific construction.

The construction site of the project is a Russian Carnicur trunk certain engineering warehouse, the project is of a continuous 3-span steel structure frame structure, the stand columns are divided into concrete stand columns and I-shaped steel stand columns, the outer vertical face of the project adopts a 150mm sandwich plate, the height of a parapet is 2m, a roof supporting system adopts a shuttle-shaped steel roof truss, a roof is laid by a 1 mm-thick galvanized trapezoidal profiled steel plate, and the roof is in a V-shaped folded plate type, 60m long and 60m wide. The roof waterproof is a first-level single-layer waterproof coiled material roof with the thickness of 130mm and is divided into a gas barrier film 300, a heat insulation layer 400 and a waterproof coiled material 500. The slope is the first basis of roof drainage, waterproof, and the roof design of this engineering warehouse finds the slope for the structure, and perpendicular ridge direction slope is two kinds 10% and 13%, and for the outer wall is pleasing to the eye and prevent that the drain pipe from freezing when ice and snow melts, adopts interior drainage design, total 10 outfalls, and the drainage slope setting between the outfalls is in 2% -3%. The various layers of the warehouse structural section and roof structure are shown in figures 1-2.

In actual construction, the quality of roof waterproof quality is the most critical factor of whether a roof leaks, and the roof leakage not only influences the normal use of a building and erodes a main structure body of the building, but also further shortens the service life of the building. By combining the construction experience of the project, the main reason analysis of the water leakage possibility of the waterproof coiled material roof is as follows:

(1) The aluminum pressing strips at the connecting positions of the gable wall and the roof panel, such as the sandwich panel or the aerated concrete block, are not firm in sealing or the sealant is aged and falls off, and rainwater leaks through the wall surface;

(2) Wind-resistant connection strength and sealing performance between roof equipment such as ventilation shafts, pipelines and the like and a roof panel are not enough, and gaps are easy to form to cause leakage;

(3) The drainage slope of the roof and the gutter, the drainage line, the flow of the drainage pipe and the like are unreasonable, the drainage of the roof is not smooth, and the roof is seriously accumulated with water, so that the leakage is caused;

(4) When the roof is constructed, the roof is randomly trodden, the protection consciousness of the finished product is light, the damaged part is not processed in time or not processed in place, and later rainwater leaks from the damaged part;

(5) The water content before and after the construction of the heat-insulating layer is more, and steam can not be discharged in time without arranging an exhaust port, so that the waterproof layer is expanded and broken, and the leakage of a roof is caused;

(6) Whether the treatment of key parts such as the details of the nodes is in place or not, and whether the operation level and quality assurance measures of construction managers are in place or not are also key factors influencing whether the roof leaks or not.

The construction technology of the waterproof coiled material roof in the embodiment specifically comprises the following steps:

1. laying of profiled steel sheets

The roof structure 200 is laid by galvanized trapezoidal profiled steel plates with the thickness of 1mm, the length of the profiled steel plates is 12 meters, the effective width of the profiled steel plates is 0.75m, the profiled steel plates are fixed on roof trusses by self-tapping screws, and the distance between every two roof trusses is 6m. The transverse end lap joint of the profiled steel sheet is designed to be 15cm, but the profiled steel sheet with the length of 12.15m cannot be purchased due to the limitation of transportation conditions, so the design is adjusted to adopt a 0.4m profiled steel sheet short plate to carry out the reinforcement and the reinforcement at the lap joint position.

As the profiled steel sheet is easy to have the cold bridge phenomenon at the positions of ridge, gutter, ventilation shaft, battenboard parapet connection, pipeline and the like, the positions need to be additionally paved with rock wool boards with the thickness not less than 250mm for heat preservation at the wave trough of the profiled steel sheet, and the rock wool boards are covered by reinforcing steel plates with the thickness not less than 0.7mm.

2. Construction of gas barrier layer (i.e., gas barrier film 300)

The purpose of setting up the gas barrier is in order to obstruct indoor moisture to get into the heat preservation. Because, if the moisture is retained in the gap of the heat-insulating layer, the moisture is condensed into condensed water when meeting cold, thereby increasing the moisture content of the heat-insulating layer and reducing the heat-insulating effect. When the temperature rises, the moisture in the heat-insulating layer is heated and changed into vapor, which causes the waterproof layer to bulge.

The engineering gas barrier layer (i.e. gas barrier film 300) adopts a self-adhesive reinforced gas barrier film with the thickness of 0.5mm and containing asphalt, the lower adhesive layer is composed of asphalt and styrene polymer, a protective film which can be easily removed is covered on the lower adhesive layer, the top layer is a gas barrier film aluminizer, and glass fiber is used as a reinforcing material.

Before laying, use the air-blower earlier with profiled sheet surface clean, drying process, the gas barrier membrane is on a parallel with the ridge direction and lays, the overlap joint should be full to glue, vertical overlap joint width is not less than 50mm, horizontal overlap joint width is no less than 100mm, the end connects the raft to stagger 250mm, if the width of gas barrier membrane overlap joint on the profiled sheet crest is less than 50mm, should turn over the gas barrier membrane and paste profiled sheet side. At the joint of the roof and the wall, the air-isolating film is continuously paved upwards along the wall surface and is not less than 25mm higher than the upper surface of the heat-insulating layer, a layer of air-isolating film is additionally paved at the positions of corners and the like, and the overlapping width of the upper layer and the lower layer is at least 100mm. After the air barrier layer is laid, the treading of personnel is reduced as much as possible, and the defective or damaged parts are repaired.

3. Construction of Heat preservation layer 400

In order to ensure that the room temperature is kept in winter and the heat loss is reduced, a heat insulation layer with the thickness of 130mm is arranged at the top of the roof and is divided into a lower heat insulation layer (a first heat insulation layer 410 with the thickness of 80 mm) and an upper heat insulation layer (a second heat insulation layer 420 with the thickness of 50 mm) according to the structure, the engineering roof belongs to a roof for people, and the hardness of the rock wool plate adopted by the upper heat insulation layer is slightly higher than that of the lower layer. Simultaneously, because drainage design in the roof drainage adopts, lower floor's heat preservation need utilize in the mouth of falling into water and take the slope rock wool board to look for the slope, should be less than all around after the mouth of falling into water installation is accomplished.

Before the heat-insulating layer is constructed, the surface of the base layer is smooth, dry and clean, the heat-insulating plate is close to the base layer, the base layer is paved and cushioned stably, the upper layer and the lower layer are staggered in joint when the heat-insulating plate is paved in layers, the abutted joints are tight, and the slope finding is correct. The heat preservation rock wool board adopts 4.8mm self-drilling screw and plastic sleeve to fix, fixes 2 screws on every rock wool board at least, and the screw is no less than 150mm apart from the heated board edge, and the plum blossom type is arranged.

The rock wool boards should be covered with the cover, and waterproof cloth or coiled materials should be covered in time in the area where the rock wool boards are laid on the same day, so that the rock wool boards are prevented from being soaked by rainwater. And (4) coating and covering the rock wool boards which are not paved by using a film. When the construction of rainy season, because air humidity is great, should use the air heater earlier to sweep the surperficial moisture of gas barrier layer clean before the rock wool board is laid to utilize the higher time quantum of daytime temperature to be under construction.

4. Construction of waterproof layer (i.e. PVC waterproof roll layer 500)

The waterproof layer that this engineering used is modified PVC waterproofing membrane, has ageing-resistant, low temperature resistant, ultraviolet resistance, high fire proofness, long service life, impermeability: 0.2MPa, and is impermeable in water in 24 hours. In addition, compared with the common asphalt waterproof coiled material, the modified PVC waterproof coiled material used in the engineering has the greatest characteristic of higher air permeability, the steam permeability of the common asphalt waterproof coiled material is 10 g/year/square meter, and the steam permeability of the modified PVC waterproof coiled material is up to 180 g/year/square meter, so that a special exhaust port is not required to be arranged after the material is used.

(1) Coiled material paving paste

The direction of paving and pasting the coiled material should be confirmed according to the roof slope, divide into vertical and parallel roof ridge and shop and paste, and this engineering is paved and pasted for perpendicular roof ridge direction, and the horizontal overlap joint of coiled material should stagger and be not less than 300mm, and the overlap joint position should be stayed in roof ridge or gutter side, should not stay at the bottom of the ditch, and 120mm is no less than to vertical overlap joint width, and the overlap joint should be in the same year maximum frequency wind direction overlap joint.

The method comprises the steps of cleaning a base layer by using an air blower before paving and pasting the coiled material, opening the whole coiled material, and spreading the coiled material on the clean and flat base layer to relax the stress of the coiled material. Before the coiled material is laid on the gutter, an additional layer of the coiled material with the width of 100mm is laid on the bottom of the gutter along the flowing water direction, and the main material is welded on the strip-shaped coiled material by a manual welding method.

(2) Coil fixation

PVC waterproofing membrane adopts 4.8mm to fix from boring screw and plastic casing, use self-control drill rod to impale waterproof membrane and heat preservation earlier, squeeze into the heat preservation with the wooden mallet with plastic casing, reuse pistol drill and squeeze into sleeve pipe and screw and pierce through profiled sheet again, 25mm is no less than to the profiled sheet that the screw stretches out, 180mm is no less than to the mounting interval, 10mm is no less than to mounting border apart from waterproof membrane border interval, mounting center distance waterproof membrane border 35mm, the mounting is close to paste waterproofing membrane can, should not too fasten.

When waterproofing membrane is fixed, it is fixed from the bottom minor face earlier, fixed top minor face again, before the top is fixed, for avoiding being qualified for the next round of competitions the crease, fix again after stretching the coiled material, fix along the long limit of coiled material again at last. And fixing adjacent coiled materials in the same way, wherein the adjacent coiled materials are overlapped with the upper coiled material by not less than 120mm.

(3) Coil welding

The welding equipment for the waterproof coiled materials can adopt a manual welding gun and an automatic welding machine, the manual welding gun is used for welding when point adhesion, strip adhesion or corner welding is carried out, and the automatic welding machine is used for welding when full adhesion or large-area welding is carried out.

During welding, a pressure roller is used for rolling while welding, the angle of a welding gun and the welding direction form 45 degrees, and a nozzle of the welding gun extends out of the edge of the coiled material by 2-3mm.

5. Exhaust valve mounting

Because the construction is carried out in rainy season, part of the rock wool boards are inevitably influenced by rain, and the rock wool boards with higher water content are subjected to solar radiation in summer, so that the water is converted into vapor, the waterproof coiled material has a bulging phenomenon, and the waterproof coiled material can crack due to freezing in winter. Although the modified PVC waterproofing membrane gas permeability that this engineering adopted is better, can effectually get rid of most vapor through coiled material self, nevertheless get rid of the cycle and reach several years, in order to guarantee waterproof quality and extension roof life, to having laid rock wool board but receive drenching or moisture content exceed 5% regional every 200 flat installation discharge valve, discharge valve is interim installation, utilize summer high temperature, get rid of the heat preservation moisture majority, treat to adopt additional waterproofing membrane to carry out interim shutoff when winter, open after the temperature rises in the spring of the coming year and ventilate, two winter and summer circulations, rock wool board that the moisture content is more originally will be totally dry, at this moment detachable reuse waterproofing membrane carries out permanent closure.

The waterproof key part of the project is treated

Parapet, ventilation shaft flashing, downpipe mouth and pipe root are the key parts of roof waterproof protection. Most of the roof leakage is caused by improper waterproof treatment of the nodes. In roof waterproof construction, a detailed waterproof structure is a weak link which is most prone to quality problems, and construction quality of the nodes needs to be controlled in a key mode.

1. Roof flashing treatment

The key to the treatment of roof flashing is the treatment of head closing, roof pressing and internal and external corners. When the head is closed, an expansion joint of 2-4mm is arranged at the corner of the aluminum pressing strip, and the sealant is polyurethane type sealant with better quality. The pressing top should be provided with a water dripping line to prevent rainwater from flowing along the wall surface and leaking from the head. The internal and external corners should be treated by experienced personnel, the thickness of the additional layer is not less than 300mm, and the welding seam is tight and flat. The concrete practice of the roof flashing node is shown in fig. 4. Referring to fig. 4, the flashing node of the roof is formed by a sandwich panel 900, a water falling port 910 is arranged near a corner, and a waterproof coiled material, a rock wool board, two insulation layers, an air barrier film, a trapezoidal profiled steel sheet and other structures are arranged at the position of the sandwich panel 900 where the water falling port 910 is located.

2. Extension pipe handling

Referring to the attached figure 5, the heat insulation structure 700 formed by heat insulation cotton is firstly used in the range of not less than 250mm around the pipeline, wherein the heat insulation cotton is formed into a heat insulation cotton layer 710 and a galvanized steel plate (namely a galvanized steel plate layer 710) of 0.7mm for reinforcement, then a gas barrier layer 730 is laid, the height of the gas barrier layer is higher than the upper surface of the heat insulation layer and is not less than 25mm, a waterproof coiled material is not less than 50mm upwards along the periphery of the pipeline, the lap joint width of an additional waterproof coiled material is not less than 150mm, two welding and sealing are carried out along the periphery of the pipeline, a cavity is reserved in the middle of the pipeline, the width of a welding line of an inner ring is 10mm, and the width of a welding line of an outer ring is 30mm.

Because this engineering weather is cold in winter and hot in summer, in order to prevent that "cold bridge" phenomenon from appearing in roofing department in the pipeline, be no less than 100 mm's rock wool board at the 30cm within range of roofing with thickness and wrap up, the rock wool board uses width 50 mm's stirrup to tighten up fixedly, and it is tight to inlay with sealing material to close the head in the top.

3. Drainage port treatment

Referring to the attached figure 6, because this engineering temperature is low to-30 in winter, the roof mouth of a river adopts the floor drain that has the heating function, mainly by the pipe in the water, the bottom ring flange, the top ring flange, prevent stifled screen panel and constitute, the bottom flange is fixed on the gas barrier membrane, prevent that vapor from discharging along the mouth of a river indoor, the fixed back of bottom ring flange uses stereoplasm rock wool board or moulds the board and consolidates the mouth of a river within 1 meter range all around, prevent that the mouth of a river from sinking, secondly place the mouth of a river rubber packing ring at the mouth of pipe, the fixed width is no less than 1 meter's water-proof membrane all around of packing ring, install on the rubber pad after smearing the polyurethane sealant all around the top flange, and screw up the nut, at last to detain stifled screen panel and accomplish the installation, the mouth of a river mounting node is shown as the following figure:

the construction of the waterproof coiled material roof is a system engineering, and the waterproof quality of the roof can be improved and the service life of the roof can be prolonged only by designing a reasonable waterproof structure, closing the quality of raw materials, selecting a professional construction team, and managing the manufacturing process and the use stage. In the embodiment, reference and reference are provided for similar projects in the future by discussing and researching the roof waterproof design and construction key points and waterproof key parts in the construction of the region related to the Carnikol trunk.

The above list of detailed descriptions is only for the specific description of the feasible embodiments of the present invention, and they are not intended to limit the scope of the present invention, and all equivalent embodiments or modifications that do not depart from the technical spirit of the present invention should be included within the scope of the present invention.

It will be evident to those skilled in the art that the invention is not limited to the details of the foregoing illustrative embodiments, and that the present invention may be embodied in other specific forms without departing from the spirit or essential attributes thereof. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.

Furthermore, it should be understood that although the present specification describes embodiments, not every embodiment includes only a single embodiment, and such description is for clarity purposes only, and it is to be understood that all embodiments may be combined as appropriate by one of ordinary skill in the art to form other embodiments as will be apparent to those of skill in the art from the description herein.

Claims (10)

1. A warehouse roof structure, comprising,

the roof support assembly is a shuttle-shaped steel roof truss;

the roof supporting assembly supports the roof structure formed by a roof slope finding structure, and the roof slope finding layer forms a plurality of V-shaped structures;

the air barrier film is positioned on the roof structure and parallel to the ridge direction, and the air barrier film is a self-adhesive reinforced air barrier film;

the heat insulation layer is positioned above the gas barrier film and comprises a first heat insulation layer and a second heat insulation layer from top to bottom, and the thickness of the first heat insulation layer is smaller than that of the second heat insulation layer;

the PVC waterproof roll layer penetrates through the heat preservation layer and the air isolation film through the screw rod and then is connected with the roof structure.

2. The warehouse roof structure of claim 1, wherein the roof structure is a trapezoidal profiled steel sheet layer, and a plurality of trapezoidal profiled steel sheet layers are overlapped through a connecting steel sheet.

3. The warehouse roof structure of claim 2, wherein the trapezoidal profiled steel sheet layer is provided at an outer circumference thereof with a zinc plating layer having a thickness of 0.5 to 1.5 mm.

4. The warehouse roof structure of claim 2, wherein the connection steel plates form wave troughs therebetween, and the wave troughs are provided with third insulating layers having a length of not less than 250 mm.

5. The warehouse roof structure of claim 4, wherein the third insulating layer is provided with a reinforcing layer, the reinforcing layer having a thickness of not less than 0.7mm.

6. The warehouse roof structure of claim 1, wherein the air barrier film comprises an aluminized film layer, an adhesive layer and a protective film layer in sequence from top to bottom.

7. The warehouse roof structure of claim 6, further comprising a reinforcing layer between the aluminized film layer and the adhesive layer.

8. The warehouse roof structure of claim 1, wherein the insulation layer is fixed to the waterproof layer by a plurality of screws, and the plurality of screws are arranged in a quincunx pattern.

9. The warehouse roof structure of claim 1, further comprising an insulation structure extending out of the pipeline, wherein the insulation structure comprises a PVC waterproof roll layer, an insulation cotton layer, an L-shaped galvanized steel plate reinforcing layer and an air barrier layer in sequence from outside to inside, and the height of the PVC waterproof roll layer is higher than that of the insulation cotton layer.

10. The warehouse roof structure of claim 1, further comprising a downpipe in the downpipe opening, wherein the downpipe is provided with a PVC waterproof coiled material layer, a hard heat-insulating cotton reinforcing layer, a common heat-insulating cotton layer, an L-shaped galvanized steel sheet reinforcing layer, a bottom heat-insulating cotton filling layer, an air barrier layer and a sealing layer in sequence from top to bottom.

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