Existing building flat roof repairing structure

Abstract

The utility model 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] This utility model relates to the field of architectural design technology, and in particular to a repair structure for the flat roof of an existing building. Background Technology

[0002] After a certain number of years of use, existing buildings are likely to experience varying degrees of leakage in their flat roofs, affecting the normal living conditions of top-floor residents. To address these technical issues, the following repair solutions are currently available:

[0003] 1) Directly apply a film-forming waterproof coating to the surface, such as polyurethane, acrylic, or polyurea. This method is simple, and the cost depends on the material and labor costs. For example, polyurea is very expensive, followed by polyurethane, and acrylic is the cheapest. This renovation solution can directly solve the surface waterproofing problem, but it does not take into account the large amount of water stored in the substrate. This water will generate air pressure in the substrate with temperature changes, which will continuously damage the film-forming waterproof coating, causing it to blister repeatedly, thus greatly reducing its service life and waterproofing effect.

[0004] 2) Before renovation, the original roof decoration layer, leveling mortar layer, insulation layer, waterproof layer, etc., are knocked off and cleaned, and then each layer is gradually restored. This method involves a huge amount of work, high labor costs, generates a lot of construction waste, and has a long construction period.

[0005] 3) For leaking areas, methods such as surface repair or grouting are used. This method is likely to cause waterproofing repairs to fail because it does not take into account that water is already seeping into the base layer.

[0006] A typical flat roof consists of, from bottom to top, a concrete structural layer, a leveling layer, a waterproof layer, a thermal insulation layer, and a roof finishing layer. When roof leaks that affect occupancy, it's highly likely that a large amount of water has accumulated between the waterproof and thermal insulation layers. Simple surface waterproofing treatments or localized surface or grouting treatments cannot solve the problem of continued water seepage. Prolonged leakage will reduce the overall lifespan of the roof, affect occupancy, and increase safety hazards. Utility Model Content

[0007] The purpose of this utility model is to provide a repair structure for existing flat roofs to solve the repair problem of water seepage and accumulation on existing flat roofs.

[0008] To achieve the above objectives, this utility model provides a repair structure for the flat roof of an existing building, comprising:

[0009] Repair grooves are provided at the seepage points of flat roofs, and the repair grooves extend 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 includes a water collection cover, a water pumping riser, and a rain cap. The water collection cover is located inside the repair trench and is used to collect roof leakage water. The bottom end of the water pumping riser is connected to the water collection cover, and the top end of the water pumping riser extends upward to the outside of the repair trench. The rain cap is detachably installed on the top end of the water pumping riser.

[0011] The backfill layer is filled into the repair trench and covers the portion of the water collection cover and the portion of the pumping riser located in the repair trench.

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

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

[0014] Optionally, the pumping riser consists of multiple pipes that are evenly spaced along the length of the water collection cover.

[0015] Optionally, the rain cap includes a T-shaped connector and two elbows connecting the horizontal ends of the T-shaped connector, with the openings of the elbows facing downwards.

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

[0017] Optionally, the bottom end of the T-shaped connector is plugged into the water supply riser.

[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 applied over the concrete protective layer.

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

[0022] 1) By slotting the water seepage point of the flat roof and installing the water pumping component, the seepage and water accumulation can be drained. Even if the flat roof encounters water accumulation problem in the surface layer again, the water can be quickly pumped out through the reserved water pumping riser, avoiding excavation again and facilitating the later maintenance and repair of the flat roof.

[0023] 2) By backfilling the repair trench, the grooved area of ​​the flat roof can be effectively reinforced;

[0024] 3) By installing a rain cap at the top of the pumping riser, foreign objects or rainwater on rainy days can be prevented from directly entering the pumping riser and the water collection cover. Attached Figure Description

[0025] Those skilled in the art will understand that the accompanying drawings are provided to better understand the present invention and do not constitute any limitation on the scope of the present invention. Wherein:

[0026] Figure 1 A structural schematic diagram of an existing building flat roof repair structure provided in an embodiment of this utility model;

[0027] Figure 2 This is a schematic diagram of the structure of a water collection cover provided in an embodiment of the present invention.

[0028] in:

[0029] 100 - Structural layer; 200 - Water collection cover; 201 - Water permeable hole; 210 - Pumping riser; 220 - Rain cap; 221 - T-joint; 222 - Elbow; 300 - Leveling layer; 310 - Crushed stone bedding layer; 320 - Concrete protective layer; 330 - Waterproof layer. Detailed Implementation

[0030] To make the objectives, advantages, and features of this utility model clearer, the following detailed description is provided in conjunction with the accompanying drawings and specific embodiments. It should be noted that the drawings are in a very simplified form and use non-precise proportions, intended only to facilitate and clearly illustrate the purpose of the embodiments of this utility model. Please refer to the accompanying drawings for a clearer understanding of the objectives, features, and advantages of this utility model. It should be understood that the structures, proportions, sizes, etc., depicted in the accompanying drawings are only for illustrative purposes and to enable those skilled in the art to understand and read the content disclosed in the specification. They are not intended to limit the implementation conditions of this utility model. Any modifications to the structure, changes in proportions, or adjustments to the size, provided they produce the same or similar effects and achieve the same objectives as this utility model, should still fall within the scope of the technical content disclosed in this utility model.

[0031] As used in this invention, the singular forms “a,” “an,” and “the” include plural objects unless otherwise expressly indicated. As used in this invention, the term “or” is generally used to include “and / or” unless otherwise expressly indicated. As used in this invention, the term “a number” is generally used to include “at least one” unless otherwise expressly indicated. As used in this invention, the term “at least two” is generally used to include “two or more” unless otherwise expressly indicated. Furthermore, the terms “first,” “second,” and “third” are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, a feature defined as “first,” “second,” or “third” may explicitly or implicitly include one or at least two of that feature.

[0032] In the description of this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "joining," and "fixing" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

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

[0034] Repair grooves are provided at the seepage points of the flat roof, and the repair grooves extend from the upper surface of the flat roof to the upper surface of the structural layer 100 of the flat roof.

[0035] The water pumping assembly includes a water collection cover 200, a water pumping riser 210, and a rain cap 220. The water collection cover 200 is located in the repair trench and is used to collect roof leakage water. The bottom end of the water pumping riser 210 is connected to the water collection cover 200, and the top end of the water pumping riser 210 extends upward to the outside of the repair trench. The rain cap 220 is detachably installed on the top end of the water pumping riser 210.

[0036] The backfill layer is backfilled into the repair trench and covers the portion of the water collection cover 200 and the portion of the pumping riser 210 located in the repair trench.

[0037] By creating grooves and installing pumping components at the seepage points on the flat roof, water can be drained from the seepage areas. Even if the flat roof encounters water accumulation issues again later, the water can be quickly pumped out through the pre-installed pumping riser 210, avoiding further excavation and facilitating future maintenance and repairs. Furthermore, backfilling the repair grooves effectively reinforces the grooved areas on the flat roof.

[0038] In this embodiment, when performing localized repairs on the flat roof of an existing building experiencing water leakage, the location of a large amount of accumulated water is determined based on the location of the seepage. Then, localized drainage trenches are created, extending to the structural layer 100, while avoiding damage to the structural layer 100 to prevent affecting the mechanical properties of the flat roof. Furthermore, conventional structures such as a leveling layer, waterproofing layer, thermal insulation layer, and roof decoration layer are also provided above the structural layer 100 of the flat roof; this application does not impose any limitations on these aspects.

[0039] This 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 collection cover 200 is installed inside the repair trench. The water collection cover 200 is used to collect water accumulated in the surface layer of the flat roof so that it can be pumped out through the drainage riser 210. Preferably, please refer to Figure 2 The water collection cover 200 is a half-circular tube. Considering the ease and economy of material sourcing, the water collection cover 200 can be made by cutting a conventional cylindrical water pipe in half lengthwise, and then selecting any one half. Its length can be adjusted reasonably according to the dimensions of the repair groove. For example, the water pipe can be a 75UPVC pipe. Of course, the water collection cover 200 can also adopt other shapes, such as a hemisphere; this utility model does not impose any limitations.

[0041] Preferably, the water collection cover 200 may also have a plurality of water-permeable holes 201 to allow water accumulated in the surface layer to flow into the water collection cover 200.

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

[0043] Optionally, the pumping riser 210 may be multiple and evenly spaced along the length of the water collection cover 200. The pumping riser 210 can be single or multiple, and can be adjusted according to construction needs; this invention does not impose any limitation on this. When multiple pumping risers 210 are used, they can be evenly spaced along the length of the water collection cover 200 to uniformly pump out seepage and accumulated water from various locations.

[0044] In this embodiment, the top of the water collection cover 200 may have several connection holes, the number of which is adapted to the number of the water pumping risers 210. The water pumping risers 210 can be fixed at the connection holes by means of adhesive or other methods, thereby connecting the water collection cover 200 and the water pumping risers 210.

[0045] In this embodiment, the water pumping riser 210 extends at least 300mm beyond the flat roof surface to facilitate the rapid extraction of water from the water collection cover 200 using a pumping device.

[0046] In this embodiment, a rain cap 220 is provided at the top of the pumping riser 210. The rain cap 220 can prevent foreign objects or rainwater from directly entering the pumping riser 210 and the water collection cover 200 during rainy days. Preferably, the rain cap 220 includes a T-shaped connector 221 and two elbows 222 connecting the two horizontal ends of the T-shaped connector 221, with the openings of the elbows 222 facing downwards. The T-shaped connector 221 is equivalent to a T-joint, with its vertical end connected to the pumping riser 210 and its two horizontal ends connected to the two elbows 222 respectively. This design can meet the rain protection requirements while also making it easy to remove the rain cap 220.

[0047] In this embodiment, the T-shaped connector 221 and the two elbows 222 can be fixedly connected by adhesive or other conventional methods. The T-shaped connector 221 and the pumping riser 210 are preferably connected by a plug-in type, meaning that the rain cap 220 can be pulled out of the pumping riser 210 by applying upward force manually, and the rain cap 220 can be pressed tightly onto the top of the pumping riser 210 by applying downward force. Of course, in addition to the plug-in type connection, clamps or other components can also be used for connection; this invention does not limit this approach.

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

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

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

[0051] In this embodiment, the repair trench is also 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. Because there are gaps between the crushed stones in the crushed stone cushion layer 310, water accumulated in the surface layer of the flat roof can enter the water collection cover 200 through these gaps. Simultaneously, during the backfilling process, the crushed stone cushion layer 310 and the concrete protective layer 320 can also fix the pumping assembly, preventing displacement of the pumping assembly 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, meaning that the repair trench can be flush with the upper surface of the flat roof after backfilling, resulting in better aesthetics.

[0053] Preferably, a waterproof layer 330 is further coated on top of the concrete protective layer 320. Applying the waterproof layer 330 further enhances the waterproofness of the repaired structure. The waterproof layer 330 may be, for example, a mesh fabric laid on top and a waterproof coating applied to the mesh fabric.

[0054] In summary, this utility model embodiment provides a repair structure for existing flat roofs. By creating a groove at the seepage point of the flat roof and installing a pumping component, it is possible to drain the seeping and accumulating water. Even if the flat roof subsequently encounters water accumulation within the surface layer, the water can be quickly pumped out through the pre-installed pumping riser 210, avoiding further excavation and facilitating the later maintenance and repair of the flat roof. Furthermore, by backfilling the repair groove, the grooved area of ​​the flat roof can be effectively reinforced.

[0055] Furthermore, it should be understood that although the present invention has been disclosed above with reference to preferred embodiments, these embodiments are not intended to limit the present invention. For any person skilled in the art, many possible variations and modifications can be made to the present invention's technical solutions using the disclosed technical content, or equivalent embodiments can be modified accordingly, without departing from the scope of the present invention's technical solutions. Therefore, any simple modifications, equivalent changes, and modifications made to the above embodiments based on the technical essence of the present invention, without departing from the content of the present invention's technical solutions, shall still fall within the protection scope of the present invention's technical solutions.

Claims

1. A repair structure for the flat roof of an existing building, characterized in that, include: Repair grooves are provided at the seepage points of flat roofs, and the repair grooves extend from the upper surface of the flat roof to the upper surface of the structural layer of the flat roof. A water pumping assembly includes a water collection cover, a water pumping riser, and a rain cap. The water collection cover is located inside the repair trench and is used to collect roof leakage water. The bottom end of the water pumping riser is connected to the water collection cover, and the top end of the water pumping riser extends upward to the outside of the repair trench. The rain cap is detachably installed on the top end of the water pumping riser. The backfill layer is filled into the repair trench and covers the portion of the water collection cover and the portion of the pumping riser located in the repair trench.

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

3. The existing building flat roof repair structure according to claim 2, characterized in that, A leveling layer is provided above the structural layer, and the water collection cover is placed upside down on the leveling layer.

4. The existing building flat roof repair structure according to claim 2, characterized in that, The pumping riser consists of multiple pipes that are evenly spaced along the length of the water collection cover.

5. The existing building flat roof repair structure according to claim 1, characterized in that, The rain cap includes a T-shaped connector and two elbows connecting the two horizontal ends of the T-shaped connector, with the openings of the elbows facing downwards.

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 connector is plugged into the pumping riser.

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 applied over the concrete protective layer.

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