The insulation construction of the anti-condensed water of steel work roofing
Technical field
The utility model belongs to the insulation construction of the anti-condensed water of building steel structure roof heat insulation structure, particularly steel work roofing.
Background technology
The steel building Roof system is color profiling steel plate to be installed as base plate at the purlin downside basically, lays the glass silk flosssilk wadding as insulation layer at the purlin upside, lays color profiling steel plate as the roofing panel on the glass silk flosssilk wadding, and this way is easy to realize.For China is not that very cold area and general purpose industrial premises can meet the demands winter, but when the especially indoor requirement in the area that temperature is very low guarantees the factory building of certain humidity and temperature in the winter time (as textile mill), just have the appearance of condensed water near an indoor side at the roofing base plate, main cause is that the roofing indoor/outdoor temperature-difference is bigger, the threshold that has surpassed dewfall under this humidity, form " cold bridge " phenomenon, the appearance of this phenomenon then can't be satisfied the technological requirement of production for the factory building of having relatively high expectations, even the production in some factory buildings can not normally be carried out.
Summary of the invention
The purpose of this utility model is to provide the insulation construction of the anti-condensed water of a kind of steel work roofing, not only can reach the requirement of factory building insulation, and can prevent the appearance of roofing condensed water, can also effectively stop roof leakage.
The utility model is achieved in that the insulation construction of the anti-condensed water of a kind of steel work roofing, comprise roof purline and constitute the roofing base plate by color profiling steel plate, the roofing base plate is installed on roof purline from bottom to top successively, waterproof plastic cloth and bottom insulation layer, on the bottom insulation layer, the dark purlin of Z-shape steel is installed with the corresponding position of roof purline, the dark purlin backing plate of inverted U is being set on the bottom insulation layer between dark purlin of Z-shape steel and the roofing base plate trough, the dark purlin backing plate of inverted U is by being bolted on the roofing base plate, the dark purlin of Z-shape steel is connected by the dark purlin backing plate of tapping screw and inverted U, dark purlin insulating layer and outer insulation layer are installed on the end face of the dark purlin of Z-shape steel successively, by the colored steel support that is fixed on the face of the Z-shape steel purlin edge of a wing crimping bayonet type color profiling steel plate are being installed on the outer insulation layer.
The utility model is installed in the waterproof plastic cloth on the roofing bottom color profiling steel plate, can play the effect of isolating chamber inner air and outer air.The gross thickness of bottom insulation and the two-layer insulation layer of outer insulation reaches 200mm, can reach the requirement of thermal technology's insulation, the dark purlin of Z-shape steel between the two-layer insulation layer supports and constitutes the immobilising cavity vapour barrier that the space forms simultaneously, this itself is exactly a kind of good isolation layer, dark purlin heat insulation layer and outer insulation layer are installed on the dark purlin of Z-shape steel successively, can block metal and the heat conducting short circuit of extraneous formation, avoid the generation of " cold bridge ".360 ° of crimping bayonet type color profiling steel plates are installed on outer insulation layer, can stop roof leakage effectively.The utility model not only can reach the requirement of factory building insulation, and can prevent the appearance of roofing condensed water, can also effectively stop roof leakage.
Description of drawings
The utility model is described in further detail below in conjunction with accompanying drawing.
Fig. 1 looks the sectional structure schematic diagram for the utility model master;
Fig. 2 is that the A-A of Fig. 1 amplifies the sectional structure schematic diagram.
The specific embodiment
The insulation construction of the anti-condensed water of a kind of steel work roofing, as shown in Figure 1 and Figure 2, comprise roof purline 1 and constitute roofing base plate 2 by color profiling steel plate, roofing base plate 2, waterproof plastic cloth 3 and bottom insulation layer 4 are installed on roof purline 1 from bottom to top successively, and bottom insulation layer 4 is that the glass silk flosssilk wadding plate of 40-60mm constitutes by thickness.On bottom insulation layer 4, the dark purlin 6 of Z-shape steel is installed with roof purline 1 corresponding position, the dark purlin backing plate 5 of inverted U is being set on the bottom insulation layer 4 between dark purlin 6 of Z-shape steel and roofing base plate 2 troughs, the dark purlin backing plate 5 of inverted U is fixed on the roofing base plate 2 by tapping screw, the dark purlin 6 of Z-shape steel is connected by the dark purlin backing plate 5 of tapping screw and inverted U, and being shaped as of the dark purlin 6 of Z-shape steel has the outside frange plate of rolling over 90 ° of symmetry respectively on its upper and lower side of upright back.The dark purlin backing plate 5 of inverted U is inverted trough slab, has the flanging of 90 ° of outside foldings on its notch limit respectively.The inverted U steel purlin backing plate 5 that is provided with can guarantee stablizing and stress equalization of Z-shape steel purlin 6.Dark purlin insulating layer 7 and outer insulation layer 8 are installed on the end face of the dark purlin 6 of Z-shape steel successively, by the colored steel support 9 that is fixed on dark purlin 6 edge of a wing faces of Z-shape steel crimping bayonet type color profiling steel plate 10 are being installed on the outer insulation layer 8.
Dark purlin insulating layer 7 is that the polystyrene board of 25-50mm constitutes by thickness.Outer insulation layer 8 is that the glass silk flosssilk wadding of 130-180mm constitutes by thickness.On outer insulation layer 8 end faces, the waterproof paster surface layer is being set.The waterproof paster surface layer is being set on the back side of bottom insulation layer 4.