Existing building flat roof repairing structure

Abstract

The invention relates to the technical field of building design, in particular to an existing building flat roof repairing structure which comprises a repairing groove formed in a water seepage position of a flat roof and extending from the upper surface of the flat roof to the upper surface of a structural layer of the flat roof; the water pumping assembly comprises a water collecting cover, a water pumping vertical pipe and a rainproof cap, the water collecting cover is located in the repairing groove and used for collecting roof leakage water, the bottom end of the water pumping vertical pipe communicates with the water collecting cover, the top end of the water pumping vertical pipe upwards extends out of the repairing groove, and the rainproof cap is detachably arranged at the top end of the water pumping vertical pipe; and the backfilling layer is backfilled in the repairing groove and covers the water collecting cover and the part, located in the repairing groove, of the water pumping vertical pipe. By grooving the water seepage position of the flat roof and arranging the water pumping assembly, water diversion and drainage of water seepage and accumulated water can be achieved, even if the surface layer of the flat roof encounters the accumulated water problem in the follow-up process, the accumulated water can be rapidly pumped out through the reserved water pumping vertical pipe, secondary excavation is avoided, and later maintenance and overhaul of the flat roof are facilitated.

Description

Technical Field

[0001] The invention relates to the technical field of building design, and in particular to a flat roof repair structure of an existing building. Background Art

[0002] After a certain number of years of use, the flat roof of an existing building is likely to leak to varying degrees, affecting the normal living of top-floor users. To solve the above technical problems, there are currently several repair solutions:

[0003] 1) Directly cover the surface with film-forming waterproof coatings, such as polyurethane, acrylic, and polyurea. This method is simple, and the cost depends on the material and labor costs. For example, the cost of polyurea is very high, followed by polyurethane, and acrylic is the cheapest. This renovation plan can directly solve the problem of surface waterproofing, but it does not take into account the large amount of accumulated water stored in the base layer before. This type of accumulated water will generate air pressure in the base layer as the temperature changes, which will continue to damage the film-forming waterproof coating, causing it to bulge repeatedly, thereby greatly reducing its service life and waterproofing effect.

[0004] 2) Before renovation, the original surface roof decoration layer, leveling mortar layer, insulation layer, waterproof layer, etc. are knocked and cleaned, and then each layer is gradually restored. This approach requires a huge workload, high labor costs, and generates a large amount of construction waste, and takes a long time to complete.

[0005] 3) For the leaking parts, perform top surface repair or grouting. This method is likely to lead to failure of waterproof renovation because it does not take into account that the water in the base layer is already flowing everywhere.

[0006] Conventional flat roofs are equipped with concrete structure layer, leveling layer, waterproof layer, thermal insulation layer and roof decoration layer from bottom to top. Generally, if there is leakage on the roof that affects living, it is very likely that a large amount of water has accumulated between the waterproof layer and the thermal insulation layer. Simple surface waterproofing or local surface or grouting treatment cannot solve the problem of continued leakage of accumulated water. Long-term leakage will reduce the service life of the entire roof, affect living, and increase safety hazards. Summary of the invention

[0007] The purpose of the present invention is to provide a repair structure for an existing flat roof of a building, so as to solve the problem of repairing water seepage and water accumulation on the flat roof of an existing building.

[0008] In order to achieve the above object, the present invention provides a repair structure for an existing flat roof, comprising:

[0009] A repair groove is provided at a water seepage location of the flat roof, and the repair groove extends from the upper surface of the flat roof to the upper surface of the structural layer of the flat roof;

[0010] A water pumping assembly, comprising a water collecting cover, a water pumping riser and a rain cap, wherein the water collecting cover is located in the repair groove and is used to collect water leaking from the roof, the bottom end of the water pumping riser is connected to the water collecting cover, the top end of the water pumping riser extends upward to the outside of the repair groove, and the rain cap is detachably arranged on the top end of the water pumping riser;

[0011] A backfill layer is backfilled in the repair groove and covers the water collecting cover and the part of the water pumping riser located in the repair groove.

[0012] Optionally, the water collecting cover is a half-circular tube.

[0013] Optionally, a leveling layer is provided above the structural layer, and the water collecting cover is inverted on the leveling layer.

[0014] Optionally, there are multiple water pumping risers and they are evenly spaced along the length direction of the water collecting cover.

[0015] Optionally, the rain cap includes a T-shaped joint and two elbows connecting the two horizontal ends of the T-shaped joint, and the openings of the elbows face downward.

[0016] Optionally, the elbow is a 90° elbow.

[0017] Optionally, the bottom end of the T-shaped joint is connected to the water pumping riser in a plug-in manner.

[0018] Optionally, the backfill layer includes a crushed stone cushion layer and a concrete protective layer backfilled from bottom to top.

[0019] Optionally, the upper surface of the concrete protective layer is flush with the upper surface of the flat roof.

[0020] Optionally, a waterproof layer is also coated on top of the concrete protective layer.

[0021] The existing building flat roof repair structure provided by the present invention has at least one of the following beneficial effects:

[0022] 1) By making grooves at the seepage points of the flat roof and arranging the pumping assembly, water diversion and drainage of seepage water can be achieved. Even if the flat roof encounters water accumulation in the surface layer later, the water can be quickly pumped out through the reserved pumping riser, avoiding excavation again, which is convenient for the later maintenance and inspection of the flat roof;

[0023] 2) By backfilling the repair groove, the groove of the flat roof can be effectively reinforced;

[0024] 3) By providing a rainproof cap at the top of the water pumping riser, foreign matter or rainwater on rainy days can be prevented from directly entering the water pumping riser and the water collecting cover. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Those skilled in the art should understand that the drawings are provided for a better understanding of the present invention and do not constitute any limitation on the scope of the present invention.

[0026] Figure 1 A schematic diagram of the structure of a flat roof repair structure of an existing building provided by an embodiment of the present invention;

[0027] Figure 2 A schematic structural diagram of a water collecting cover provided in one embodiment of the present invention.

[0028] in:

[0029] 100-structural layer; 200-water collecting cover; 201-water permeable hole; 210-pumping riser; 220-rain cap; 221-T-joint; 222-elbow; 300-leveling layer; 310-gravel cushion layer; 320-concrete protective layer; 330-waterproof layer. DETAILED DESCRIPTION

[0030] In order to make the purpose, advantages and features of the present invention clearer, the present invention is further described in detail below in conjunction with the accompanying drawings and specific embodiments. It should be noted that the accompanying drawings are in a very simplified form and use non-precise proportions, which are only used to conveniently and clearly assist in explaining the purpose of the embodiments of the present invention. In order to make the purpose, features and advantages of the present invention more obvious and easy to understand, please refer to the accompanying drawings. It should be noted that the structure, proportion, size, etc. illustrated in the drawings of this specification are only used to match the content disclosed in the specification for people familiar with this technology to understand and read, and are not used to limit the limiting conditions for the implementation of the present invention. Any modification of the structure, change in the proportional relationship or adjustment of the size, under the same or similar conditions as the effects that can be produced by the present invention and the purposes that can be achieved, should still fall within the scope of the technical content disclosed by the present invention.

[0031] As used in the present invention, the singular forms "one", "an", and "the" include plural objects, unless the content clearly indicates otherwise. As used in the present invention, the term "or" is generally used in a sense that includes "and / or", unless the content clearly indicates otherwise. As used in the present invention, the term "several" is generally used in a sense that includes "at least one", unless the content clearly indicates otherwise. As used in the present invention, the term "at least two" is generally used in a sense that includes "two or more", unless the content clearly indicates otherwise. In addition, the terms "first", "second", and "third" are used only for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, the features defined as "first", "second", and "third" may explicitly or implicitly include one or at least two of the features.

[0032] In the description of the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", and "fixed" 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 a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0033] Please refer to Figure 1 This embodiment provides a repair structure for an existing flat roof, including:

[0034] A repair groove is provided at a water seepage location of the flat roof, and the repair groove extends from the upper surface of the flat roof to the upper surface of the structural layer 100 of the flat roof;

[0035] A water pumping assembly, comprising a water collecting cover 200, a water pumping riser 210 and a rain cap 220, wherein the water collecting cover 200 is located in the repair groove and is used to collect water from roof leakage, the bottom end of the water pumping riser 210 is connected to the water collecting cover 200, the top end of the water pumping riser 210 extends upward to the outside of the repair groove, and the rain cap 220 is detachably arranged on the top end of the water pumping riser 210;

[0036] The backfill layer is backfilled in the repaired groove and covers the water collecting cover 200 and the part of the water pumping riser 210 located in the repaired groove.

[0037] By making grooves at the water seepage of the flat roof and setting up pumping components, water diversion and drainage of water seepage and accumulation can be achieved. Even if the flat roof encounters water accumulation in the surface layer later, the accumulated water can be quickly pumped out through the reserved pumping riser 210, avoiding re-excavation and facilitating the later maintenance and inspection of the flat roof. In addition, by backfilling the repair groove, the groove of the flat roof can be effectively reinforced.

[0038] In this embodiment, when the flat roof of an existing building is partially repaired due to water leakage, the location of a large amount of water accumulation is determined according to the infiltration location, and then local grooves are opened for drainage, and the grooves are deep to the structural layer 100, but damage to the structural layer 100 is avoided to avoid affecting the mechanical properties of the flat roof. In addition, conventional structures such as a leveling layer, a waterproof layer, a thermal insulation layer, and a roof decoration layer are also arranged above the structural layer 100 of the flat roof, and this application does not limit this.

[0039] The present invention does not limit the shape and size of the repair groove, for example, it can be a rectangular groove, a strip groove, etc., and can be adjusted according to the water seepage situation.

[0040] A water collecting cover 200 is provided in the repair trough, and the water collecting cover 200 is used to collect the water in the surface layer of the flat roof so as to be pumped out through the pumping riser 210. Figure 2 , the water collecting cover 200 is a half-piece circular tube. Considering the simplicity and economy of material acquisition, the water collecting cover 200 can be made of a conventional cylindrical water pipe divided into two from the middle, and then any half piece can be selected, and its length can be reasonably adjusted according to the size of the repair groove. The water pipe is, for example, a 75UPVC pipe. Of course, the water collecting cover 200 can also adopt other shapes, such as a hemispherical shape, which is not limited by the present invention.

[0041] Preferably, the water collecting cover 200 may further have a plurality of water permeable holes 201 , so that the water accumulated in the surface layer can flow into the water collecting cover 200 .

[0042] In this embodiment, a leveling layer 300 is provided above the structural layer 100, and the water collecting cover 200 is inverted on the leveling layer 300. The leveling layer 300 can be paved with cement mortar, for example. Before paving the leveling layer 300, the floating dust in the repair groove can be removed first.

[0043] Optionally, the pumping riser 210 is multiple and is evenly spaced along the length direction of the water collecting cover 200. The pumping riser 210 can be one or multiple, and can be adjusted according to construction requirements, and the present invention does not limit this. When the pumping riser 210 is multiple, the multiple pumping risers 210 can be evenly spaced along the length direction of the water collecting cover 200 to evenly extract the seepage and accumulated water in various places.

[0044] In this embodiment, a plurality of connection holes may be opened on the top of the water collecting cover 200, the number of which matches the number of the water pumping risers 210, and the water pumping risers 210 may be fixed at the connection holes by gluing or other means, thereby connecting the water collecting cover 200 and the water pumping risers 210.

[0045] In this embodiment, the water pumping riser 210 protrudes from the flat roof by at least 300 mm, so that the accumulated water in the water collecting cover 200 can be quickly pumped out by a pumping device.

[0046] In this embodiment, a rain cap 220 is provided at the top of the water pumping riser 210, and the rain cap 220 can prevent foreign matter or rainwater on rainy days from directly entering the water pumping riser 210 and the water collecting cover 200. Preferably, the rain cap 220 includes a T-shaped joint 221 and two elbows 222 connected at both horizontal ends of the T-shaped joint 221, and the openings of the elbows 222 face downward. The T-shaped joint 221 is equivalent to a three-way joint, and one end thereof is vertically arranged to connect to the water pumping riser 210, and the two horizontal ends are respectively connected to the two elbows 222. Such a design can not only meet the rain protection requirements, but also facilitate the removal of the rain cap 220.

[0047] In this embodiment, the T-shaped joint 221 and the two elbows 222 can be fixedly connected by gluing or other conventional methods, and the T-shaped joint 221 and the water pumping riser 210 are preferably connected by plug-in connection, that is, the rain cap 220 can be pulled out from the water pumping riser 210 by upward force, and the rain cap 220 can be pressed against the top of the water pumping riser 210 by downward force. Of course, in addition to the plug-in connection, components such as a clamp can also be used for connection, and the present invention is not limited to this.

[0048] It should be noted that the water collecting cover 200 and the water pumping riser 210 of the present application are directly connected to the outside atmosphere through the rain cap 220 and have a certain air permeability.

[0049] In this embodiment, the elbow 222 is preferably a 90° elbow.

[0050] In this embodiment, the water pumping riser 210, the T-joint 221 and the elbow 222 can all be made of 75UPVC pipes.

[0051] In this embodiment, the repair groove is backfilled with a crushed stone cushion layer 310 and a concrete protective layer 320. The crushed stone cushion layer 310 is laid on the leveling layer 300, and the concrete protective layer 320 is laid on the crushed stone cushion layer 310. Since there are gaps between the crushed stones of the crushed stone cushion layer 310, the accumulated water in the surface layer of the flat roof can enter the water collecting cover 200 through the gaps. At the same time, during the backfilling process, the crushed stone cushion layer 310 and the concrete protective layer 320 can also fix the pumping assembly to prevent the pumping assembly from shifting after the repair is completed. In this embodiment, the crushed stone cushion layer 310 is backfilled to the top elevation of the insulation layer of the flat roof.

[0052] In this embodiment, the upper surface of the concrete protective layer 320 is flush with the upper surface of the flat roof, that is, the repair groove can be flush with the upper surface of the flat roof after backfilling, which is more aesthetically pleasing.

[0053] Preferably, a waterproof layer 330 is also coated on the concrete protective layer 320. The waterproof property of the repaired structure can be further improved by coating the waterproof layer 330. The waterproof layer 330 is, for example, a mesh cloth is laid and a waterproof coating is applied on the mesh cloth.

[0054] In summary, the embodiment of the present invention provides a repair structure for an existing flat roof. By making grooves at the water seepage of the flat roof and setting up a pumping assembly, water diversion and drainage of water seepage and accumulation can be achieved. Even if the flat roof encounters water accumulation in the surface layer later, the accumulated water can be quickly pumped out through the reserved pumping riser 210, avoiding excavation again, and facilitating the later maintenance and inspection of the flat roof. In addition, by backfilling the repair groove, the groove of the flat roof can be effectively reinforced.

[0055] In addition, it should be recognized that although the present invention has been disclosed as a preferred embodiment, the above embodiment is not intended to limit the present invention. For any technician familiar with the art, without departing from the scope of the technical solution of the present invention, the technical content disclosed above can be used to make many possible changes and modifications to the technical solution of the present invention, or modified into equivalent embodiments of equivalent changes. Therefore, any simple modification, equivalent change and modification made to the above embodiment according to the technical essence of the present invention without departing from the content of the technical solution of the present invention still belongs to the scope of protection of the technical solution of the present invention.

Claims

1. A flat roof repair structure for an existing building, characterized in that: include: A repair groove is provided at a water seepage location of the flat roof, and the repair groove extends from the upper surface of the flat roof to the upper surface of the structural layer of the flat roof; A water pumping assembly, comprising a water collecting cover, a water pumping riser and a rain cap, wherein the water collecting cover is located in the repair groove and is used to collect water leaking from the roof, the bottom end of the water pumping riser is connected to the water collecting cover, the top end of the water pumping riser extends upward to the outside of the repair groove, and the rain cap is detachably arranged on the top end of the water pumping riser; A backfill layer is backfilled in the repair groove and covers the water collecting cover and the part of the water pumping riser located in the repair groove.

2. The existing building flat roof repair structure according to claim 1 is characterized in that: The water collecting cover is a half-circular tube.

3. The existing building flat roof repair structure according to claim 2 is characterized in that: A leveling layer is arranged above the structural layer, and the water collecting cover is inverted on the leveling layer.

4. The existing building flat roof repair structure according to claim 2 is characterized in that: There are multiple water pumping risers which are evenly spaced and distributed along the length direction of the water collecting cover.

5. The existing building flat roof repair structure according to claim 1, characterized in that: The rainproof cap comprises a T-shaped joint and two elbows connected at two horizontal ends of the T-shaped joint, and the openings of the elbows face downward.

6. The existing building flat roof repair structure according to claim 5, characterized in that: The elbow is a 90° elbow.

7. The existing building flat roof repair structure according to claim 5, characterized in that: The bottom end of the T-shaped joint is connected to the water pumping riser in a plug-in manner.

8. The existing building flat roof repair structure according to claim 1, characterized in that: The backfill layer includes a crushed stone cushion layer and a concrete protective layer backfilled from bottom to top.

9. The existing building flat roof repair structure according to claim 8, characterized in that: The upper surface of the concrete protective layer is flush with the upper surface of the flat roof.

10. The existing building flat roof repair structure according to claim 8, characterized in that: A waterproof layer is also coated on the top of the concrete protective layer.

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