A drainage and exhaust structure for repairing a concrete insulation roof and a repair construction method

Abstract

The present invention relates to a drainage and exhaust structure for the repair of a concrete thermal insulation roof and a repair construction method. The drainage and exhaust structure includes a roof, a plurality of exhaust pipes and a plurality of downspouts arranged on the roof. The roof includes a concrete structure layer, a lower waterproof layer, a thermal insulation layer, a concrete protective layer and an upper waterproof layer arranged in sequence from bottom to top. A separation joint is provided on the concrete protective layer. A groove is provided at a position on the bottom wall of the thermal insulation layer corresponding to the separation joint. A drainage board is arranged in the groove. The exhaust pipes and the downspouts are arranged on the roof at positions corresponding to the drainage board. The bottom end of the exhaust pipe abuts against the drainage board. A double-layer drainage structure is provided at the downspout. The structure of the present invention is scientifically and reasonably designed, the repair quality of the roof is reliable, treating both the symptoms and the root causes, and at the same time, the repair and treatment cost of the concrete thermal insulation roof is greatly reduced.

Description

Technical Field

[0001] The invention belongs to the field of roof waterproofing, and particularly relates to a drainage and exhaust structure for repairing a concrete thermal insulation roof and a repair construction method. Background Art

[0002] As an important part of a building, the roof plays an important role in the normal use function of the building, the energy utilization efficiency, and the indoor environment regulation. At present, the roof area of existing buildings in China is nearly 10 billion square meters, and the average service life of existing building roofs is about 10 to 15 years. This results in a very large capacity for roof repair and treatment every year. The repair and treatment of existing building roofs will surely become the norm. As one of the main forms of existing building roofs, the repair and transformation of concrete thermal insulation roofs are particularly important.

[0003] Whether it is an inverted or a positive concrete thermal insulation roof, the problem of water storage in the insulation layer caused by roof leakage has always been the pain point and difficulty in the repair and transformation of concrete thermal insulation roofs. Once the roof leaks, it will cause water storage in the insulation layer, and it is very difficult to effectively drain the water accumulated in the insulation layer. This will lead to a series of problems such as long-term roof leakage, insulation layer failure, the upper structure of the insulation layer being cracked by steam, and freeze-thaw damage to the roof structure layer. At the same time, the repair and treatment of the water storage in the insulation layer caused by roof leakage are also very difficult. And adopting the method of removing all the roof structures to the roof structure layer and then redoing them will generate huge repair and treatment costs and a large amount of construction waste, which is not worth the loss. If only exhaust pipes are added, it only treats the symptoms but not the root cause, and the repair of roof leakage and the treatment of water storage in the insulation layer have little effect. It also increases the detailed nodes of the waterproof layer, and the angle between the exhaust pipe and the concrete protective layer is usually 90 degrees, where the stress is relatively concentrated, which easily leads to cracking of the waterproof layer and increases the risk of roof leakage. Summary of the Invention

[0004] The purpose of the invention is to overcome the defects of the prior art and provide a drainage and exhaust structure for repairing a concrete thermal insulation roof and a repair construction method.

[0005] To achieve the above purpose, the technical solutions adopted by the invention are as follows:

[0006] Technical Solution 1:

[0007] A drainage and exhaust structure for the maintenance of a concrete thermal insulation roof, including a roof, the roof comprising a concrete structure layer, a lower waterproof layer, a thermal insulation layer, a concrete protection layer and an upper waterproof layer arranged in sequence from bottom to top, a dividing joint is provided on the concrete protection layer, a groove is provided at a position on the bottom wall of the thermal insulation layer corresponding to the dividing joint, a drainage board is arranged in the groove, a plurality of exhaust pipes and a plurality of downspouts are arranged on the roof at positions corresponding to the drainage board, the bottom end of the exhaust pipe abuts against the drainage board, and a double-layer drainage structure is provided at the downspout.

[0008] Further, the convex end of the drainage board is arranged downward.

[0009] Further, a caulking material is arranged in the dividing joint, and one side of the dividing joint is aligned with the corresponding side of the groove.

[0010] Further, the double-layer drainage structure includes a lower downspout arranged on the concrete structure layer, an upper downspout arranged above the lower downspout, the bottom end of the upper downspout extends into the lower downspout, and a gap is provided between the upper downspout and the lower downspout.

[0011] Furthermore, a plurality of convex blocks are arranged on the outer wall of the upper downspout along the circumference, and the convex blocks are erected on the lower waterproof layer.

[0012] Further, a steamed bun-shaped package is arranged around the exhaust pipe above the concrete protection layer, and ventilation holes are provided at positions on the exhaust pipe corresponding to the thermal insulation layer.

[0013] Further, the end of the upper waterproof layer close to the exhaust pipe extends upward to the side wall of the exhaust pipe and is fixed to the exhaust pipe through a clamp;

[0014] An additional waterproof layer is further arranged between the concrete protection layer and the upper waterproof layer, and the end of the additional waterproof layer close to the exhaust pipe is bent upward and arranged outside the exhaust pipe.

[0015] Technical solution two:

[0016] A construction method for the maintenance of a concrete thermal insulation roof specifically includes the following steps:

[0017] Step 1, on the dividing joint of the original concrete thermal insulation roof, cut the roof along the dividing joint, and the cutting depth reaches the upper surface of the lower waterproof layer;

[0018] Step 2, in the cutting area between the cutting line and the dividing joint, chisel off the concrete protection layer, cut out the thermal insulation layer, and at the same time avoid damaging the original lower waterproof layer, and clean the cutting area;

[0019] Step 3: Chisel the structural layer around the roof drain outlet to the roof concrete structural slab, and reserve a lapping area on the original lower waterproof layer; then lay a new lower waterproof layer at the drain outlet, and the new lower waterproof layer is lapped with the original lower waterproof layer.

[0020] Step 4: Lay drainage plates in the entire cutting area with the raised ends of the drainage plates facing downwards. Cut the drainage plates into round openings at the drain outlet. Pass the upper downspout through the round opening and install it above the original downspout, and make temporary fixation. The original downspout is used as the lower downspout.

[0021] Step 5: Lay insulation boards above the drainage plates in the entire cutting area. Cut the insulation boards into round openings at the upper downspout and fit them with the upper downspout; set an exhaust pipe at the center of the vertical and horizontal intersection in the cutting area. The bottom of the exhaust pipe contacts the drainage plates, and the top of the exhaust pipe is higher than the concrete protective layer.

[0022] Step 6: Pour a new concrete protective layer above the insulation layer in the entire cutting area, leaving a new separation joint with a width of 10 - 40 mm on one side, and fill the joint with caulking material; the new concrete protective layer around the drain outlet slopes towards the center of the drain outlet.

[0023] Step 7: Construct the upper waterproof layer on the cutting area, and that's it.

[0024] Technical solution three:

[0025] A maintenance construction method for a concrete insulation roof specifically includes the following steps:

[0026] Step 1: Snap a line 100 - 300 mm on one side of the separation joint of the original concrete insulation roof, and cut along the snapped line until the upper surface of the lower waterproof layer is reached.

[0027] Step 2: In the cutting area between the cutting line and the separation joint, chisel the concrete protective layer and cut out the insulation layer while avoiding damaging the original lower waterproof layer, and clean the cutting area.

[0028] Step 3: Chisel the structural layer within a range of 250 - 600 mm around the roof drain outlet to the roof concrete structural slab, reserve a lapping area of 100 - 300 mm on the original lower waterproof layer, then apply an asphalt primer on the concrete structural slab around the drain outlet, and then construct a lower coating waterproof layer with a thickness of 1.5 - 3.0 mm, and then lay a lower coiled waterproof layer. The old lower waterproof layer and the new lower coiled waterproof layer are lapped.

[0029] Step 4: Lay drainage plates throughout the cutting area with the raised ends facing downwards. Cut the drainage plates into round openings at the water outlet that are 10 - 50 mm larger in diameter than the original downpipe. Pass the upper downpipe through the round opening and install it above the original downpipe. The bump of the upper downpipe is placed on the lower coiled waterproof layer for temporary fixation, and the original downpipe is used as the lower downpipe.

[0030] Step 5: Lay insulation boards above the drainage plates throughout the cutting area. Cut the insulation boards into round openings at the upper downpipe for fitting with the upper downpipe. Set up an exhaust pipe at the center of the intersection of the longitudinal and transverse directions in the cutting area. The bottom of the exhaust pipe contacts the drainage plates, and the top of the exhaust pipe protrudes above the concrete protective layer.

[0031] Step 6: Pour a new concrete protective layer above the insulation layer throughout the cutting area, leaving a new separation joint of 10 - 40 mm on one side and filling the joint with caulking material. When pouring the new concrete protective layer, find a slope of 5 - 10% from the circumference of the water outlet towards the center of the water outlet.

[0032] Step 7: Apply an additional waterproof layer at the exhaust pipe, and construct an upper coating waterproof layer and then an upper coiled waterproof layer throughout the cutting area.

[0033] Further, in Step 3, after chiseling the area around the water outlet, before applying the lower waterproof layer, a circular groove needs to be cut around the original downpipe, and sealant is filled in the circular groove.

[0034] In Step 5, during the construction of the insulation layer, tape is pasted at the joint between adjacent insulation boards above the insulation boards.

[0035] In Step 5, the operation method for setting up the exhaust pipe at the center of the intersection of the longitudinal and transverse directions in the cutting area is as follows: Cut the insulation board into a round opening for fitting with the exhaust pipe. The bottom of the exhaust pipe abuts against the upper surface of the drainage plates, and the top of the exhaust pipe protrudes 250 - 400 mm above the concrete protective layer.

[0036] In Step 6, a steamed bun - shaped bulge also needs to be made above the new concrete protective layer at the exhaust pipe.

[0037] In Step 7, when constructing the upper waterproof layer, at the water outlet, extend the upper coating waterproof layer into the upper downpipe by at least 50 mm. At the exhaust pipe, turn up the upper coating waterproof layer and the upper coiled waterproof layer by 250 - 400 mm and wrap them around the outer circumference of the exhaust pipe, tightly fasten them with a clamp, and then apply dot - type sealant above the upper waterproof layer.

[0038] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0039] In the present invention, a number of grooves that communicate with each other are provided along the separation joints on the bottom surface of the thermal insulation layer, and the drainage board is arranged in the grooves. Therefore, when repairing and reconstructing the original conventional roof, only a part of the roof needs to be removed, and the drainage board can be embedded into the bottom of its thermal insulation layer. Compared with the traditional reconstruction plan of removing all the structures of the roof to the roof structural layer and then redoing them all, the scale and cost of roof repair and reconstruction are reduced, and at the same time, the generation amount of construction waste is also greatly reduced.

[0040] In the present invention, the exhaust pipe and the double-layer drainage structure are both arranged at the positions on the roof corresponding to the drainage board. Therefore, the water in the thermal insulation layer can be discharged from the exhaust pipe and the water outlet through the drainage board, avoiding the phenomena of water storage and ponding in the roof thermal insulation layer due to leakage, and ensuring the heat preservation and energy-saving performance of the roof thermal insulation layer.

[0041] The design of the double-layer drainage structure of the present invention enables the water on the roof surface layer to be discharged through the upper downpipe, and the accumulated water in the thermal insulation layer can be discharged from the gap between the upper downpipe and the lower downpipe, having a double-layer drainage function; at the same time, for the double-layer drainage structure of the present invention, only the upper downpipe needs to be newly made on the basis of the original downpipe to complete the transformation of the original water outlet, which is simple, convenient, economical and applicable.

[0042] The structure of the present invention is designed scientifically and reasonably, the quality of roof repair is reliable, treating both the symptoms and the root causes. At the same time, the repair and treatment cost of the concrete thermal insulation roof is greatly reduced, a large amount of construction waste brought by the overall roof renovation is avoided, resources are saved, and the environment is protected. BRIEF DESCRIPTION OF THE DRAWINGS

[0043] Figure 1 It is a schematic structural diagram (without the upper waterproof layer) in an embodiment of the present invention;

[0044] Figure 2 It is a schematic structural diagram of the middle part of the roof in an embodiment of the present invention;

[0045] Figure 3 It is a schematic structural diagram of the roof water outlet in an embodiment of the present invention;

[0046] Figure 4 is Figure 3 an enlarged view of part A of

[0047] Figure 5 It is a schematic structural diagram of the roof exhaust pipe in an embodiment of the present invention.

[0048] In the figure: 1, concrete structure layer; 2, lower waterproof layer; 3, insulation layer; 4, concrete protective layer; 5, upper coating waterproof layer; 6, upper coiled material waterproof layer; 7, exhaust pipe; 8, water inlet; 9, separation joint; 10, drainage board; 11, foam wood stick; 12, bituminous paste; 13, lower downspout; 14, upper downspout; 15, gap; 16, bump; 17, flange plate one; 18, flange plate two; 20, sealant; 21, rain grate; 24, original lower waterproof layer; 25, new lower coating waterproof layer; 26, new lower coiled material waterproof layer; 27, steamed bun-shaped package; 28, ventilation hole; 29, clamp; 30, additional waterproof layer; 31, sealant. Detailed implementation mode

[0049] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are part of the embodiments of the present invention, rather than all of the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention.

[0050] In the description of the present invention, it should be noted that the orientation or positional relationship indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. is based on the orientation or positional relationship shown in the accompanying drawings. It is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation to the present invention. In addition, the terms "first", "second", "third" are only used for descriptive purposes and cannot be construed as indicating or implying relative importance.

[0051] In the description of the present invention, it should be noted that unless otherwise clearly specified and defined, the terms "installation", "connection", "connection" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific situations.

[0052] The present invention will be further described in detail below with reference to the accompanying drawings.

[0053] As Figures 1 to 5An embodiment of a drainage and exhaust structure for repairing a concrete insulation roof according to the present invention is shown, including a roof, which includes a concrete structure layer 1, a lower waterproof layer 2, a thermal insulation layer 3, a concrete protection layer 4, and an upper waterproof layer arranged in sequence from bottom to top. A separation joint 9 is arranged on the concrete protection layer 4. A groove is arranged at a position on the bottom wall of the thermal insulation layer corresponding to the separation joint 9. A drainage board 10 is arranged in the groove. A plurality of exhaust pipes 7 and a plurality of downspouts 8 are arranged on the roof at positions corresponding to the drainage board 10. The bottom end of the exhaust pipe 7 abuts against the drainage board 10. A double-layer drainage structure is arranged at the downspout 8. When adopting this structure, when repairing and reconstructing the original conventional roof, only a part of the roof needs to be removed and the drainage board 10 is embedded at the bottom of its thermal insulation layer 3. Compared with the traditional reconstruction plan of removing all the structures of the roof to the roof structure layer and then redoing them all, the scale and cost of roof repair and reconstruction are reduced, and the generation amount of construction waste is also greatly reduced.

[0054] As an embodiment of a drainage and exhaust structure for repairing a concrete insulation roof according to the present invention, the raised end of the drainage board 10 is arranged downward.

[0055] As an embodiment of a drainage and exhaust structure for repairing a concrete insulation roof according to the present invention, a caulking material is arranged in the separation joint 9, and a foam wood stick 11 is also arranged below the caulking material. One side of the separation joint 9 is aligned with the corresponding side of the groove. Using the separation joint instead of a cutting joint reduces the workload. In addition, since the separation joint 9 is a reticular structure connected vertically and horizontally, its groove must also be a reticular structure connected vertically and horizontally.

[0056] Furthermore, the caulking material is one or more of asphalt putty 12, sealant, and yellow sand.

[0057] As an embodiment of a drainage and exhaust structure for repairing a concrete insulation roof according to the present invention, the double-layer drainage structure includes a lower downspout 13 arranged on the concrete structure layer 1, and an upper downspout 14 arranged above the lower downspout 13. The bottom end of the upper downspout 14 extends into the lower downspout 13 and a gap 15 is arranged between the upper downspout 14 and the lower downspout 13. The design of the double-layer drainage structure of the present invention enables the water on the roof surface layer to be discharged through the upper downspout 14, and the accumulated water in the thermal insulation layer 3 can be discharged from the gap 15 between the upper downspout 14 and the lower downspout 13, having a double-layer drainage function; at the same time, the double-layer drainage structure of the present invention only needs to newly make the upper downspout 14 on the basis of the original downspout to complete the transformation of the original downspout 8, which is simple, convenient, economical and applicable.

[0058] Furthermore, a plurality of protrusions 16 are provided along the circumference of the outer wall of the upper downpipe 14, and the protrusions 16 are mounted on the lower waterproof layer 2, so that during the construction and renovation of the roof, the upper downpipe 14 can be initially fixed, which is convenient for subsequent construction operations.

[0059] The height of the protrusion 16 is smaller than the height of the protrusion on the drain board 10, so that the protrusion 16 is arranged below the flat plate on the drain board 10. When the protrusion takes the position of the protrusion 16, a plurality of notches are arranged at positions corresponding to the protrusion on the drain board 10, and the protrusion 16 is arranged in the notches and matches with the notches.

[0060] As an embodiment of a drainage and steam exhaust structure for repairing a concrete insulation roof according to the present invention, a flange plate 17 is provided on the top of the upper downpipe 14 , and the upper downpipe 14 is mounted on the concrete protective layer 4 through the flange plate 17 .

[0061] Furthermore, the upper portion of the upper downpipe 14 is funnel-shaped.

[0062] As an embodiment of a drainage and steam exhaust structure for repairing a concrete thermal insulation roof according to the present invention, a flange plate 2 18 is provided on the lower downpipe 13 , and the flange plate 2 18 is mounted on the concrete structure layer 1 .

[0063] Furthermore, the concrete structure layer 1 is provided with an annular groove at the edge of the flange plate 2, and a sealing paste 20 is provided in the annular groove. The sealing paste 20 of the present invention is used to seal the gap between the lower downpipe 13 and the concrete structure layer 1.

[0064] When the concrete insulation roof is repaired, the lower waterproof layer at the downspout needs to be re-laid, and the other parts of the roof use the original lower waterproof layer 24. The newly laid lower waterproof layer at the downspout is set in two layers. Therefore, as an embodiment of a drainage and steam exhaust structure for repairing a concrete insulation roof of the present invention, the lower waterproof layer at the non-downspout 8 uses the original lower waterproof layer 24 of the old roof, and the lower waterproof layer at the downspout 8 includes a new lower paint waterproof layer 25 arranged below and a new lower roll waterproof layer 26 above, as well as the original lower waterproof layer 24 overlapping the new lower paint waterproof layer 25 and / or the new lower roll waterproof layer 26.

[0065] As an embodiment of a drainage and steam exhaust structure for repairing a concrete thermal insulation roof according to the present invention, the upper waterproof layer is two layers, the lower upper waterproof layer is an upper coating waterproof layer 5, and the upper upper waterproof layer is an upper coiled waterproof layer 6. A polyester non-woven fabric is embedded in the middle of the upper coating waterproof layer 5.

[0066] As an embodiment of a drainage and exhaust structure for repairing a concrete thermal insulation roof according to the present invention, a rainwater grate 21 is provided at the top port of the upper downspout 14, and the rainwater grate 21 is erected on the lowermost upper waterproof layer.

[0067] As an embodiment of a drainage and exhaust structure for repairing a concrete thermal insulation roof according to the present invention, a bun-shaped structure 27 is provided around the exhaust pipe 7 above the concrete protective layer 4, and ventilation holes 28 are provided at positions on the exhaust pipe 7 corresponding to the thermal insulation layer 3. By providing the bun-shaped structure 27 on the concrete protective layer 4, the present invention not only strengthens the exhaust pipe 7 and makes the installation of the exhaust pipe 7 more stable, but also disperses the stress at the angle between the exhaust pipe 7 and the concrete protective layer 4, buffers the waterproof layer at this angle, and avoids cracking of the waterproof layer at this position. The provision of the strip-shaped ventilation holes 28 in the present invention facilitates the discharge of water vapor in the thermal insulation layer 3 into the exhaust pipe 7.

[0068] As an embodiment of a drainage and exhaust structure for repairing a concrete thermal insulation roof according to the present invention, the end of the upper waterproof layer close to the exhaust pipe 7 extends upward to the side wall of the exhaust pipe 7 and is fixed to the exhaust pipe 7 through a clamp 29;

[0069] Furthermore, a sealant 31 is provided at the top of the upper waterproof layer.

[0070] As an embodiment of a drainage and exhaust structure for repairing a concrete thermal insulation roof according to the present invention, an additional waterproof layer 30 is further provided between the concrete protective layer 4 and the upper waterproof layer. The end of the additional waterproof layer 30 close to the exhaust pipe 7 is bent upward and disposed outside the exhaust pipe 7. The top of the additional waterproof layer 30 is disposed below the clamp 29, and the additional waterproof layer 30 is disposed above the bun-shaped structure 27.

[0071] As an embodiment of a drainage and exhaust structure for repairing a concrete thermal insulation roof according to the present invention, strip-shaped ventilation holes 28 are provided at positions on the exhaust pipe 7 corresponding to the thermal insulation layer 3, which facilitates the discharge of water vapor in the thermal insulation layer 3 into the exhaust pipe 7.

[0072] As an embodiment of a drainage and exhaust structure for repairing a concrete thermal insulation roof according to the present invention, the exhaust pipe 7 is a T-shaped exhaust pipe, and the horizontal part of the T-shaped exhaust pipe is bent downward. The provision of the T-shaped exhaust pipe 7 makes the air flow speed in the exhaust pipe 7 faster.

[0073] To implement the above drainage and exhaust structure for repairing a concrete thermal insulation roof, the present invention also discloses a construction method for repairing a concrete thermal insulation roof, which specifically includes the following steps:

[0074] Step 1: Along the original concrete thermal insulation roof division joint, cut the roof along the division joint to a depth reaching the upper surface of the lower waterproof layer.

[0075] Step 2: In the cutting area between the cutting line and the division joint, chisel off the concrete protective layer, cut and remove the thermal insulation layer, while avoiding damaging the original lower waterproof layer, and clean the cutting area.

[0076] Step 3: Chisel off the structural layer around the roof drain to the roof concrete structural slab, and reserve a lapping area on the original lower waterproof layer; then lay a new lower waterproof layer at the drain, and the new lower waterproof layer is lapped with the original lower waterproof layer.

[0077] Step 4: Lay drainage boards in the entire cutting area with the raised ends of the drainage boards facing downwards. Cut the drainage boards into round openings at the drain, pass the upper downspout through the round openings and install it above the original downspout, and make temporary fixation. The original downspout is used as the lower downspout.

[0078] Step 5: Lay thermal insulation boards above the drainage boards in the entire cutting area. Cut the thermal insulation boards into round openings at the upper downspout and fit them with the upper downspout; set an exhaust pipe at the center of the vertical and horizontal intersection in the cutting area. The bottom of the exhaust pipe contacts the drainage board, and the top of the exhaust pipe is higher than the concrete protective layer.

[0079] Step 6: Pour a new concrete protective layer above the thermal insulation layer in the entire cutting area, reserve a new division joint on one side, and fill the joint with caulking material; the new concrete protective layer around the drain slopes towards the center of the drain.

[0080] Step 7: Construct the upper waterproof layer on the cutting area, and that's it.

[0081] As an embodiment of the construction method for repairing a concrete thermal insulation roof of the present invention, it specifically includes the following steps:

[0082] Step 1: Draw a line at a position 100 - 300 mm on one side of the original concrete thermal insulation roof division joint, and cut along the drawn line to the upper surface of the lower waterproof layer.

[0083] Step 2: In the cutting area between the cutting line and the division joint, chisel off the concrete protective layer, cut and remove the thermal insulation layer, while avoiding damaging the original lower waterproof layer, and clean the cutting area.

[0084] Step 3: Chisel the structural layer within the range of 300 - 600 mm around the roof drain outlet to the roof concrete structural slab, reserve a lap area of 100 - 300 mm on the original lower waterproof layer, cut a circular groove around the original downspout, and fill the circular groove with sealant; then apply an asphalt primer on the concrete structural slab around the drain outlet. After that, construct a lower coating waterproof layer with a thickness of 1.5 - 3.0 mm, and then lay the lower coiled material waterproof layer. The lap width between the old lower waterproof layer and the new lower coiled material waterproof layer is 100 - 300 mm;

[0085] Step 4: Lay drainage boards within the entire cutting area, with the raised ends of the drainage boards facing downwards. Cut the drainage boards into round openings at the drain outlet that are 10 - 50 mm larger than the diameter of the original downspout. Pass the upper downspout through the round opening and install it above the original downspout. The convex blocks of the upper downspout are placed on the lower coiled material waterproof layer for temporary fixation, and the original downspout is used as the lower downspout;

[0086] Step 5: Lay insulation boards above the drainage boards within the entire cutting area. Paste a 100 - mm - wide tape at the joints between adjacent insulation boards. Cut the insulation boards into round openings at the upper downspout and fit them with the upper downspout; Set an exhaust pipe at the center of the intersection of the longitudinal and transverse directions in the cutting area. The bottom of the exhaust pipe contacts the drainage board, and the top of the exhaust pipe protrudes above the concrete protective layer;

[0087] Step 6: Pour a new concrete protective layer above the insulation layer within the entire cutting area, leaving a new separation joint of 10 - 40 mm on one side, and fill the joint with caulking material. When pouring the new concrete protective layer, find a slope of 5 - 10% from the circumference of the drain outlet towards the center of the drain outlet;

[0088] Step 7: Apply an additional waterproof layer at the exhaust pipe, construct an upper coating waterproof layer within the entire cutting area, and then construct an upper coiled material waterproof layer. That's all.

[0089] As an embodiment of the construction method for repairing a concrete insulation roof of the present invention, in Step 3, after chiseling the area around the drain outlet, before constructing the lower waterproof layer, it is also necessary to cut a circular groove around the original downspout and fill the circular groove with sealant;

[0090] In Step 5, during the construction of the insulation layer, paste a tape at the joints between adjacent insulation boards above the insulation boards.

[0091] In Step 5, the operation method for setting the exhaust pipe at the center of the intersection of the longitudinal and transverse directions in the cutting area is as follows: Cut the insulation board into a round opening and fit it with the exhaust pipe. The bottom of the exhaust pipe abuts against the upper surface of the drainage board, and the top of the exhaust pipe protrudes 250 - 400 mm above the concrete protective layer;

[0092] In Step 6, a steamed bun - shaped package is also required above the new concrete protective layer at the exhaust pipe.

[0093] In Step 7, when constructing the upper waterproof layer, at the water inlet, the upper coating waterproof layer should extend into the upper downspout by at least 50 mm; at the exhaust pipe, the upper coating waterproof layer and the upper coiled material waterproof layer should be turned up by 250 - 400 mm, wrapped around the outer periphery of the exhaust pipe, tightly fastened with a clamp, and then apply dot sealant above the upper waterproof layer.

[0094] As an embodiment of the construction method for repairing a concrete thermal insulation roof of the present invention, the drainage board 10 has a width of 100 - 300 mm and a height of 20 - 50 mm.

[0095] As an embodiment of the construction method for repairing a concrete thermal insulation roof of the present invention, the thermal insulation layer material is one or more of polystyrene foam, rigid polyurethane foam, foam glass products, and sprayed rigid polyurethane foam.

[0096] As an embodiment of the construction method for repairing a concrete thermal insulation roof of the present invention, the caulking material is one or more of asphalt putty, sealant, and yellow sand.

[0097] As an embodiment of the construction method for repairing a concrete thermal insulation roof of the present invention, the new concrete protective layer is C20 or C25 fine aggregate concrete with a thickness of 30 mm - 60 mm.

[0098] As an embodiment of the construction method for repairing a concrete thermal insulation roof of the present invention, both the upper coating waterproof layer and the new lower coating waterproof layer are made of one or more of non-curing rubber asphalt waterproof coating, solvent-based rubber asphalt waterproof coating, and BH2 high-viscosity anti-slip rubber asphalt waterproof coating, and the thickness of both the upper coating waterproof layer and the new lower coating waterproof layer is 1.5 - 3.0 mm; both the upper coating waterproof layer and the new lower coating waterproof layer are interposed with polyester non-woven fabric of 30 - 50 g / m 2 with a width of 1 m.

[0099] Furthermore, a foam wood stick 11 is provided below the caulking material.

[0100] As an embodiment of the construction method for repairing a concrete thermal insulation roof of the present invention, both the upper coiled material waterproof layer and the new lower coiled material waterproof layer are one or more of 4 mm thick SBS modified asphalt waterproof coiled material (shale surface), 4 mm thick SBS modified asphalt waterproof coiled material, 3 mm thick SBS modified asphalt waterproof coiled material, and 3 mm thick self-adhesive polymer modified asphalt waterproof coiled material.

[0101] The following uses specific embodiments to introduce in detail the construction method for repairing a concrete thermal insulation roof of the present invention.

[0102] Example 1

[0103] Step 1: According to the size of 12×12m, mark the line 300mm on one side of the original concrete insulation roof separation seam, and cut along the marked line until the upper surface of the lower waterproof layer is reached, with a cutting depth of about 50mm;

[0104] Step 2: In the 300mm wide cutting area between the cutting line and the separation seam, remove the concrete protective layer and cut out the insulation layer, while avoiding damaging the original lower waterproof layer and cleaning the cutting area;

[0105] Step 3: Chisel off the structural layer within 500mm around the roof drain outlet to the roof concrete structural slab, and reserve a 150mm overlap area on the original lower waterproof layer, cut a circular groove around the original drain pipe, and fill the circular groove with sealing paste; then apply a layer of asphalt base treatment agent on the concrete structural slab 500mm around the drain outlet, and then scrape a 1.5mm thick lower coating waterproof layer (water-based rubber asphalt waterproof coating), and then lay a 4mm thick lower coiled waterproof layer (SBS modified asphalt waterproof coiled material), and the overlap width between the old lower waterproof layer and the new lower coiled waterproof layer is 150mm;

[0106] Step 4: Lay the drainage board in the entire cutting area, with the convex end of the drainage board facing downward. Cut the drainage board into a circular opening 20 mm larger than the diameter of the original downpipe at the downspout. Pass the upper downpipe through the circular opening and install it above the original downpipe. The convex block of the upper downpipe is set on the lower waterproofing layer for temporary fixation. The original downpipe is used as the lower downpipe.

[0107] Step 5: Lay the insulation board above the drainage board in the entire cutting area, stick 100mm wide tape on the seams of adjacent insulation boards, cut the insulation board into a round opening at the upper downpipe, and fit it with the upper downpipe; in the center of the vertical and horizontal intersection of the cutting area, cut the insulation board into a round opening, fit it with the exhaust pipe, the bottom of the exhaust pipe abuts against the upper surface of the drainage board, and the top of the exhaust pipe is 300mm higher than the concrete protective layer;

[0108] Step 6: Pour a new concrete protective layer on top of the insulation layer in the entire cutting area, reserve a new separation seam of 30mm on one side, and embed the seam with backing material foam sticks and caulking materials. When pouring the new concrete protective layer, find a 5% slope around the drain outlet to the center of the drain outlet, and make a bun-shaped package to fix the exhaust pipe on the new concrete protective layer;

[0109] Step 7: Apply an additional waterproof layer at the exhaust pipe. Use a 3-mm-thick upper coating waterproof layer (non-curing rubber asphalt waterproof coating) for construction throughout the cutting area, and then construct a 4-mm-thick upper coiled material waterproof layer (SBS modified asphalt waterproof coiled material (shale surface)). The upper coating waterproof layer at the water inlet extends at least 50 mm into the upper downpipe; the upper coating waterproof layer and the upper coiled material waterproof layer at the exhaust pipe are turned up 250 - 400 mm and wrapped around the outer periphery of the exhaust pipe, fastened with a clamp, and then apply dot sealant above the upper waterproof layer. That's it.

[0110] Preferably, the drainage board has a width of 300 mm and a height of 25 mm.

[0111] Preferably, the caulking material in the dividing joint is yellow sand.

[0112] Preferably, both the upper coating waterproof layer and the lower coating waterproof layer are interlayered with 50 g / m 2 of polyester non-woven fabric, and the width of the polyester non-woven fabric is 1 m.

[0113] Example 2

[0114] Step 1: According to the size of 6×6 m, draw a line 100 mm away from one side of the dividing joint of the original concrete insulation roof, and cut along the drawn line until the upper surface of the lower waterproof layer, with a cutting depth of about 50 mm.

[0115] Step 2: In the 100-mm-wide cutting area between the cutting line and the dividing joint, chisel off the concrete protective layer, cut and remove the insulation layer, and at the same time avoid damaging the original lower waterproof layer. Clean the cutting area.

[0116] Step 3: Chisel off the structural layer within 250 mm around the roof water inlet to the roof concrete structural slab, and reserve a 150-mm lap area on the original lower waterproof layer. Cut an annular groove around the original downpipe, and fill the annular groove with sealant; then apply an asphalt primer on the concrete structural slab within 250 mm around the water inlet. After that, scrape and apply a 1.5-mm-thick lower coating waterproof layer (water-based rubber asphalt waterproof coating), and then lay a 3-mm-thick lower coiled material waterproof layer (SBS modified asphalt waterproof coiled material). The lap width between the old lower waterproof layer and the new lower coiled material waterproof layer is 150 mm.

[0117] Step 4: Lay drainage boards throughout the cutting area, with the raised ends of the drainage boards facing downwards. Cut the drainage boards into round openings larger than the diameter of the original downpipe by 20 mm at the water inlet, install the upper downpipe through the round openings above the original downpipe, and temporarily fix the bumps of the upper downpipe on the lower coiled material waterproof layer. The original downpipe is used as the lower downpipe.

[0118] Step 5: Lay insulation boards above the drainage boards within the entire cutting area. Paste a 100-mm-wide tape at the joints between adjacent insulation boards. Cut the insulation boards into round openings at the upper-layer downspouts and fit them with the upper-layer downspouts. Cut the insulation boards into round openings at the center of the vertical and horizontal intersections in the cutting area and fit them with the exhaust pipes. The bottom of the exhaust pipes abuts against the upper surface of the drainage boards, and the top of the exhaust pipes protrudes 300 mm above the concrete protective layer.

[0119] Step 6: Pour a new concrete protective layer above the insulation layer within the entire cutting area. Leave a new separation joint with a width of 20 mm on one side, and embed a backfill material, i.e., a foam stick and a caulking material, in the joint. When pouring the new concrete protective layer, find a 5% slope from the periphery of the water inlet to the center of the water inlet. Make a steamed bun-shaped bulge above the new concrete protective layer at the position of the exhaust pipe to fix the exhaust pipe.

[0120] Step 7: Apply an additional waterproof layer at the position of the exhaust pipe. Construct an upper-layer coating waterproof layer (non-curing rubber asphalt waterproof coating) with a thickness of 2 mm within the entire cutting area, and then construct an upper-layer coiled material waterproof layer (SBS modified asphalt waterproof coiled material (shale surface)) with a thickness of 4 mm. The upper-layer coating waterproof layer at the water inlet extends into the upper-layer downspout by at least 50 mm. The upper-layer coating waterproof layer and the upper-layer coiled material waterproof layer at the position of the exhaust pipe are turned up by 250 - 400 mm and wrapped around the outer periphery of the exhaust pipe and fastened with a clamp. Then, apply a dot sealant above the upper waterproof layer.

[0121] Preferably, the width of the drainage board is 300 mm and the height is 25 mm.

[0122] Preferably, the caulking material embedded in the separation joint is a foam stick and asphalt ointment.

[0123] Preferably, a 50-g / m 2 polyester non-woven fabric is sandwiched in both the upper-layer coating waterproof layer and the lower-layer coating waterproof layer, and the width of the polyester non-woven fabric is 1 m.

[0124] Example 3

[0125] Step 1: Snap a line 300 mm away from one side of the separation joint of the original concrete insulation roof in accordance with the size of 12×12 m, and cut along the snapped line to the upper surface of the lower waterproof layer, with a cutting depth of approximately 50 mm.

[0126] Step 2: In the 300-mm-wide cutting area between the cutting line and the separation joint, chisel out the concrete protective layer, cut out and remove the insulation layer, and avoid damaging the original lower waterproof layer at the same time. Clean the cutting area.

[0127] Step 3: Chisel the structural layer within a range of 500 mm around the roof drain outlet down to the roof concrete structural slab, and reserve a 150-mm lap area on the original lower waterproof layer. Cut an annular groove around the original downspout, and fill the annular groove with sealant. Then, apply an asphalt primer on the concrete structural slab within a range of 500 mm around the drain outlet. After that, scrape and apply a 1.5-mm thick lower coating waterproof layer (water-based rubber asphalt waterproof coating), and then lay a 3-mm thick lower sheet waterproof layer (SBS modified asphalt waterproof sheet). The lap width between the old lower waterproof layer and the new lower sheet waterproof layer is 150 mm.

[0128] Step 4: Lay drainage boards within the entire cutting area with the raised ends facing downwards. Cut the drainage boards into round openings at the drain outlet that are 20 mm larger than the diameter of the original downspout. Pass the upper downspout through the round opening and install it above the original downspout. The bumps of the upper downspout are placed on the lower sheet waterproof layer for temporary fixation, and the original downspout is used as the lower downspout.

[0129] Step 5: Lay insulation boards above the drainage boards within the entire cutting area. Paste 100-mm wide tapes at the joints between adjacent insulation boards. Cut the insulation boards into round openings at the upper downspout for fitting with the upper downspout. At the center of the intersection of the longitudinal and transverse directions in the cutting area, cut the insulation board into a round opening for fitting with the exhaust pipe. The bottom of the exhaust pipe abuts against the upper surface of the drainage board, and the top of the exhaust pipe is 300 mm higher than the concrete protective layer.

[0130] Step 6: Pour a new concrete protective layer above the insulation layer within the entire cutting area, leaving a 30-mm wide new separation joint on one side. Fill the joint with a backing material of foam sticks and caulking material. When pouring the new concrete protective layer, find a 5% slope from the circumference of the drain outlet towards the center of the drain outlet. Make a bun-shaped bulge above the new concrete protective layer at the location of the exhaust pipe to fix the exhaust pipe.

[0131] Step 7: Apply an additional waterproof layer at the location of the exhaust pipe. Construct a 1.5-mm thick upper coating waterproof layer (high-viscosity anti-slip water-based rubber asphalt waterproof coating) within the entire cutting area, and then construct a 4-mm thick upper sheet waterproof layer (SBS modified asphalt waterproof sheet (shale surface)). The upper coating waterproof layer at the drain outlet extends into the upper downspout by at least 50 mm. The upper coating waterproof layer and the upper sheet waterproof layer at the location of the exhaust pipe are turned up by 250 - 400 mm and wrapped around the outer circumference of the exhaust pipe, and fastened with a clamp. Then, apply dot sealant above the upper waterproof layer.

[0132] Preferably, the width of the drainage board is 300 mm and the height is 25 mm.

[0133] Preferably, the caulking material filled in the separation joint is foam sticks and asphalt putty.

[0134] Preferably, a polyester non-woven fabric with a weight of 50 g / m 2 is sandwiched in both the upper coating waterproof layer and the lower coating waterproof layer, and the width of the polyester non-woven fabric is 1 m.

[0135] The above-described embodiments are only preferred embodiments of the present invention and not an exhaustive list of feasible implementations of the present invention. Any obvious modifications made by those of ordinary skill in the art without departing from the principles and spirit of the present invention should be considered to be included within the scope of the claims of the present invention.

Claims

1. A drainage and exhaust structure for the maintenance of a concrete thermal insulation roof, characterized in that, it includes a roof, and the roof includes a concrete structure layer (1), a lower waterproof layer (2), a thermal insulation layer (3), a concrete protection layer (4) and an upper waterproof layer arranged in sequence from bottom to top. A separation joint (9) is arranged on the concrete protection layer (4). A groove is arranged at a position on the bottom wall of the thermal insulation layer corresponding to the separation joint (9). A drainage board (10) is arranged in the groove. A plurality of exhaust pipes (7) and a plurality of water inlets (8) are arranged on the roof corresponding to the drainage board (10). The bottom end of the exhaust pipe (7) abuts against the drainage board (10), and a double-layer drainage structure is arranged at the water inlet (8); The double-layer drainage structure includes a lower downcomer (13) arranged on the concrete structure layer (1), and an upper downcomer (14) arranged above the lower downcomer (13). The bottom end of the upper downcomer (14) extends into the lower downcomer (13) and a gap (15) is arranged between the upper downcomer (14) and the lower downcomer (13); A plurality of convex blocks (16) are arranged on the outer wall of the upper downcomer (14) along the circumference, and the convex blocks (16) are erected on the lower waterproof layer (2); The drainage board (10) is cut into a round opening at the water inlet (8), and the upper downcomer (14) is installed above the original downcomer through the round opening, and the original downcomer is used as the lower downcomer (13).

2. A drainage and exhaust structure for the maintenance of a concrete thermal insulation roof according to claim 1, characterized in that, the convex end of the drainage board (10) is arranged downward.

3. A drainage and exhaust structure for the maintenance of a concrete thermal insulation roof according to claim 1, characterized in that, sealing materials are arranged in the separation joint (9), and one side of the separation joint (9) is aligned with the corresponding side of the groove.

4. A drainage and exhaust structure for the maintenance of a concrete thermal insulation roof according to claim 1, characterized in that, a steamed bun-shaped package (27) is arranged around the exhaust pipe (7) above the concrete protection layer (4), and ventilation holes (28) are arranged at positions on the exhaust pipe (7) corresponding to the thermal insulation layer (3).

5. A drainage and exhaust structure for the maintenance of a concrete thermal insulation roof according to claim 1, characterized in that, the end of the upper waterproof layer close to the exhaust pipe (7) extends upward to the side wall of the exhaust pipe (7) and is fixed to the exhaust pipe (7) through a clamp (29); An additional waterproof layer (30) is also arranged between the concrete protection layer (4) and the upper waterproof layer. The end of the additional waterproof layer (30) close to the exhaust pipe (7) is bent upward and arranged outside the exhaust pipe (7).

6. A construction method for the maintenance of a concrete thermal insulation roof, characterized in that, specifically includes the following steps: Step 1, on the separation joint of the original concrete thermal insulation roof, cut the roof along the separation joint, and the cutting depth reaches the upper surface of the lower waterproof layer; Step 2: In the cutting area between the cutting line and the separation joint, chisel off the concrete protective layer, cut out and remove the thermal insulation layer, and avoid damaging the original lower waterproof layer at the same time. Clean up the cutting area; Step 3: Chisel off the structural layer around the roof drain outlet to the roof concrete structural slab, and reserve a lap area on the original lower waterproof layer; then lay a new lower waterproof layer at the drain outlet, and the new lower waterproof layer is set in lap with the original lower waterproof layer. Step 4: Lay drainage boards in the entire cutting area, with the raised ends of the drainage boards facing downwards. Cut the drainage boards into round openings at the drain outlet. Pass the upper downspout through the round opening and install it above the original downspout, and make temporary fixation. The original downspout is used as the lower downspout; Step 5: Lay thermal insulation boards above the drainage boards in the entire cutting area. Cut the thermal insulation boards into round openings at the upper downspout and fit them with the upper downspout; Set a steam exhaust pipe at the center of the vertical and horizontal intersection of the cutting area. The bottom of the steam exhaust pipe contacts the drainage board, and the top of the steam exhaust pipe is higher than the concrete protective layer; Step 6: Pour a new concrete protective layer above the thermal insulation layer in the entire cutting area, reserve a new separation joint on one side, and fill the joint with caulking material; The new concrete protective layer around the drain outlet slopes towards the center of the drain outlet; Step 7: Just construct the upper waterproof layer on the cutting area.

7. A construction method for repairing a concrete thermal insulation roof, characterized in that, specifically includes the following steps: Step 1: Snap a line at a position 100 - 300 mm on one side of the original separation joint of the concrete thermal insulation roof, and cut along the snapped line until reaching the upper surface of the lower waterproof layer; Step 2: In the cutting area between the cutting line and the separation joint, chisel off the concrete protective layer, cut out and remove the thermal insulation layer, and avoid damaging the original lower waterproof layer at the same time. Clean up the cutting area; Step 3: Chisel off the structural layer within a range of 300 - 600 mm around the roof drain outlet to the roof concrete structural slab, and reserve a lap area of 100 - 300 mm on the original lower waterproof layer. Then apply an asphalt primer on the concrete structural slab around the drain outlet. After that, construct a lower coating waterproof layer with a thickness of 1.5 - 3.0 mm, and then lay a lower coiled waterproof layer. The old lower waterproof layer and the new lower coiled waterproof layer are set in lap; Step 4: Lay drainage boards in the entire cutting area, with the raised ends of the drainage boards facing downwards. Cut the drainage boards into round openings at the drain outlet that are 10 - 50 mm larger than the diameter of the original downspout. Pass the upper downspout through the round opening and install it above the original downspout. The convex blocks of the upper downspout are placed on the lower coiled waterproof layer for temporary fixation. The original downspout is used as the lower downspout; Step 5: Lay thermal insulation boards above the drainage boards in the entire cutting area. Cut the thermal insulation boards into round openings at the upper downspout and fit them with the upper downspout; Set a steam exhaust pipe at the center of the vertical and horizontal intersection of the cutting area. The bottom of the steam exhaust pipe contacts the drainage board, and the top of the steam exhaust pipe is higher than the concrete protective layer; Step 6: Pour a new concrete protective layer above the thermal insulation layer within the entire cutting area, leaving a new separation joint of 10 - 40 mm on one side, and embed joint filling materials in the joint. When pouring the new concrete protective layer, find a slope of 5 - 10% from the circumference of the water inlet towards the center of the water inlet; Step 7: Apply an additional waterproof layer at the exhaust pipe, construct an upper coating waterproof layer within the entire cutting area, and then construct an upper coiled material waterproof layer, and that's it.

8. A method for repairing and constructing a concrete thermal insulation roof according to claim 7, characterized in that, In step 3, after chiseling the area around the water inlet, before constructing the lower waterproof layer, it is also necessary to cut a circular groove around the original downpipe and embed sealant in the circular groove; In step 5, when constructing the thermal insulation layer, paste tape at the joint between adjacent thermal insulation boards above the thermal insulation board; In step 5, the operation method for setting the exhaust pipe at the center of the intersection of the longitudinal and transverse directions in the cutting area is: cut the thermal insulation board into a round opening, fit it with the exhaust pipe, make the bottom of the exhaust pipe abut against the upper surface of the drainage board, and make the top of the exhaust pipe 250 - 400 mm higher than the concrete protective layer; In step 6, a steamed bun-shaped cover also needs to be made above the new concrete protective layer at the exhaust pipe; In step 7, when constructing the upper waterproof layer, at the water inlet, extend the upper coating waterproof layer into the upper downpipe by at least 50 mm; at the exhaust pipe, turn up the upper coating waterproof layer and the upper coiled material waterproof layer by 250 - 400 mm and wrap them around the outer circumference of the exhaust pipe, fasten them with a clamp, and then apply dot sealant above the upper waterproof layer.

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