Pitched roof structure for old community reconstruction

Abstract

The utility model discloses a pitched roof structure for old community reconstruction, which comprises a ridge beam and a roof cornice ring beam, a pitched roof structural plate is arranged between the ridge beam and the roof cornice ring beam, and connecting ribs are longitudinally implanted along the ridge beam and the roof cornice ring beam. A conversion layer reinforcing mesh is installed on a pitched roof structural plate through connecting ribs, a plurality of keel fixing steel bars are arranged on the conversion layer reinforcing mesh, a concrete conversion layer is poured on the pitched roof structural plate, and a roof waterproof layer, a roof heat preservation layer and a DS mortar protection layer are sequentially laid on the concrete conversion layer. A plurality of counter battens are longitudinally arranged above the DS mortar protective layer, a plurality of roof battens are transversely arranged above the counter battens, and roof tiles are laid above the roof battens. According to the structure, the problem that the roof counter batten cannot be fixed due to the fact that the pitched roof structural slab cannot meet the requirement for the embedded steel bar depth under the conditions that original drawing data are lacked and the current building structure condition is not clear is solved.

Description

Technical Field

[0001] The utility model relates to the technical field of urban renewal and renovation construction of old residential areas, and in particular to a slope roof structure used for the renovation of old residential areas. Background Art

[0002] With the continuous development of urban renewal, energy-saving renovation of old communities has gradually become an important means of urban renewal. In the energy-saving renovation of old communities, the renovation of sloping roofs with insulation layers has become a classic and common form of renovation. Under traditional forms, it is often necessary to implant steel bars on the roof structure plates to fix the roof water-relief strips and tile hanging strips after the construction of functional structures such as roof insulation and waterproofing is completed, and at the same time, the roof load is evenly transmitted to the roof structure plates, and then transmitted downward to the foundation.

[0003] However, since old communities are often built a long time ago, the traceability of previous completion data is poor and basic data is seriously lost. At the same time, as construction technology continues to change with the times, it is impossible to grasp the details of the building roof before construction, especially the specific conditions of the roof structural panels.

[0004] This leads to situations where the actual building and the renovation methods often do not match each other during the construction process. This is mainly manifested in that the thickness of the roof structural board does not match the required thickness of the structure, which cannot meet the needs of anchoring, and the roof structure stratification is different from the estimated situation, resulting in a significant increase in the roof load, which in turn endangers the safety of the structure. What's worse, the floor slab will be pierced, the structure will be destroyed, and further affecting the lives of residents, damaging residents' property and causing large-scale roof leakage. Utility Model Content

[0005] The utility model aims to provide a slope roof structure for the renovation of old residential areas, which solves the problem that the actual building and the renovation method cannot match each other under the traditional construction form.

[0006] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0007] A slope roof structure for the reconstruction of old residential areas comprises a ridge beam and a roof cantilevered eaves ring beam, a slope roof structure plate is arranged between the ridge beam and the roof cantilevered eaves ring beam, connecting bars are longitudinally implanted along the ridge beam and the roof cantilevered eaves ring beam, a conversion layer steel mesh is installed on the slope roof structure plate through the connecting bars, a plurality of keel fixing steel bars are arranged on the conversion layer steel mesh, a concrete conversion layer is cast above the slope roof structure plate, the conversion layer steel mesh is located in the concrete conversion layer, the top of the keel fixing steel bar is located outside the concrete conversion layer, a roof waterproof layer, a roof insulation layer and a DS mortar protective layer are sequentially laid above the concrete conversion layer, a plurality of water-following strips are longitudinally arranged above the DS mortar protective layer and fixed by the top of the keel fixing steel bar, a plurality of tile hanging strips are transversely arranged above the water-following strips, and roof tiles are laid above the tile hanging strips.

[0008] Preferably, the connecting rib is made of bent steel bars, and comprises an implanting portion and a bending portion, the implanting portion is longitudinally implanted into the ridge beam or the roof eaves ring beam, and the bending portion is arranged in contact with the sloping roof structure plate.

[0009] Preferably, the keel fixing steel bars are made by bending steel bars, and include a fixing portion and a connecting portion, the fixing portion is fitted and fixed on the conversion layer steel mesh, and the connecting portion is in a vertically arranged state.

[0010] Preferably, the intersection position of the upper ends of the plurality of water-following strips and the ridge beam is the implantation position of the connecting reinforcement; the intersection position of the lower ends of the plurality of water-following strips and the roof eaves ring beam is the implantation position of the connecting reinforcement.

[0011] Preferably, the spacing between the conversion layer steel mesh and the slope roof structure plate is 20 mm.

[0012] Preferably, the conversion layer steel mesh is a mesh structure made of steel bars, with a single layer and bidirectional arrangement.

[0013] Preferably, a galvanized steel mesh is provided in the DS mortar protective layer.

[0014] Preferably, the DS mortar protective layer is 20 mm thick.

[0015] In the utility model, the fixing points of the uniformly distributed steel bars for fixing the roof water-guiding strips are transferred from the sloping roof structural plate to the ridge beam and the roof eaves ring beam through a conversion layer of steel mesh, thereby avoiding the problem that the roof water-guiding strips cannot be fixed because the sloping roof structural plate cannot meet the requirement of embedded steel bars when the original drawings and materials are missing and the current structural conditions of the building are unclear.

[0016] The concrete transfer layer is finished by calendering. At the same time, the steel mesh of the transfer layer bears the structural load of the upper part of the sloping roof structure plate while also bearing the tension in the concrete transfer layer, further reducing the risk of cracking of the concrete transfer layer. This effectively ensures that the surface conditions of the concrete transfer layer can meet the construction needs of the roof waterproof layer and continue to ensure the overall waterproof construction quality of the sloping roof during subsequent use.

[0017] By replacing the combined leveling layer with a concrete transfer layer, the total load of the sloping roof is reduced, ensuring the overall structure of the sloping roof and the safe use of the roof structure.

[0018] The thickness of the DS mortar protective layer is reduced compared with the traditional method. While ensuring that the strength is not lower than the traditional method, a layer of galvanized steel mesh is pressed in, which improves the integrity of the DS mortar protective layer and reduces the risk of cracking and breaking of the DS mortar protective layer. At the same time, the overall thickness and overall load of the slope roof structure are reduced, ensuring the safe use of the slope roof structure.

[0019] The conversion layer steel mesh greatly reduces the number of steel bar implantation points on the sloping roof, effectively reducing the risk of large-scale leakage on the sloping roof. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0021] Figure 2 It is a partial structural schematic diagram of the utility model;

[0022] In the figure: 1. Ridge beam; 2. Roof eaves ring beam; 3. Slope roof structural plate; 4. Connecting reinforcement; 5. Transfer layer steel mesh; 6. Keel fixing steel bars; 7. Concrete transfer layer; 8. Roof waterproofing layer; 9. Roof insulation layer; 10. DS mortar protective layer; 11. Water-following strip; 12. Tile hanging strip; 13. Roof tile. DETAILED DESCRIPTION

[0023] The utility model is further described below in conjunction with the accompanying drawings:

[0024] like Figure 1 and Figure 2 A slope roof structure for renovation of old residential areas shown in the figure includes a ridge beam 1 and a roof eaves ring beam 2, a slope roof structure plate 3 is arranged between the ridge beam 1 and the roof eaves ring beam 2, and a connecting bar 4 is longitudinally implanted along the ridge beam 1 and the roof eaves ring beam 2. The connecting bar 4 is made of bent steel bars, including an implantation portion and a bent portion, the implantation portion is longitudinally implanted in the ridge beam 1 or the roof eaves ring beam 2, and the bent portion is arranged in contact with the slope roof structure plate 3.

[0025] A transfer layer steel mesh 5 is installed on the pitch roof structure plate 3 through the connecting ribs 4, and the spacing between the transfer layer steel mesh 5 and the pitch roof structure plate 3 is 20 mm. The transfer layer steel mesh 5 is a mesh structure made of steel bars, arranged in a single layer and in two directions. Specifically, the transfer layer steel mesh 5 is fixedly installed at the bending part by welding.

[0026] A plurality of keel fixing steel bars 6 are arranged on the transfer layer steel mesh 5. The keel fixing steel bars 6 are made by bending steel bars and include a fixing portion and a connecting portion. The fixing portion is fixed to the transfer layer steel mesh 5 by welding, and the connecting portion is vertically arranged.

[0027] A concrete conversion layer 7 is cast above the pitched roof structure slab 3 , and the conversion layer steel mesh 5 is located inside the concrete conversion layer 7 , and the top of the keel fixing steel bars 6 , ie, the connecting portion, is located outside the concrete conversion layer 7 .

[0028] A roof waterproof layer 8, a roof insulation layer 9 and a DS mortar protective layer 10 are sequentially laid above the concrete conversion layer 7, and a galvanized steel plate mesh is arranged in the DS mortar protective layer 10. The thickness of the DS mortar protective layer 10 is 20 mm.

[0029] A plurality of water-following strips 11 are longitudinally arranged above the DS mortar protective layer 10 and are fixed by welding through the top of the keel fixing steel bar 6 , a plurality of tile hanging strips 12 are transversely welded above the water-following strips 11 , and roof tiles 13 are laid above the tile hanging strips 12 .

[0030] In this example, the intersection of the upper ends of the plurality of water-following strips 11 and the ridge beam 1 is the implantation position of the connecting rib 4. The intersection of the lower ends of the plurality of water-following strips 11 and the roof eaves ring beam 2 is the implantation position of the connecting rib 4.

[0031] The specific implementation steps are as follows:

[0032] Step 1: Remove the original slope roof structure to the slope roof structure board 3, remove the original roof tiles, the original waterproof layer and other structures on the leveling layer, clean up the garbage and debris after the removal, and sweep away the dust on the surface of the slope roof structure board 3.

[0033] Step 2: Carry out the layout construction on the sloping roof structure board 3, lay out the center line position of the water-following strip 11, the center distance is 900mm, and lay out the position of the anchor hole of the connecting bar 4 at the intersection of the center line with the ridge beam 1 and the roof eaves ring beam 2.

[0034] Step 3: Drill holes on the ridge beam 1 and the roof eaves ring beam 2. The hole diameter is the diameter of the connecting reinforcement 4, that is, 12mm, the hole depth is 15d, that is, 180mm, and the drilling spacing is 900mm.

[0035] Step 4: After cleaning the hole, implant the connecting ribs 4 with a spacing of 900mm and an implantation depth of 15d. The implanted part is fixed with chemical anchor glue.

[0036] Step 5: After the anchor glue is cured, carry out the anchor pull-out test. After the test is passed, lay the roof conversion layer steel mesh 5. The conversion layer steel mesh 5 uses HPB300 grade 6mm diameter steel bars, arranged in a single layer and in two directions. The conversion layer steel mesh 5 is arranged in the center, 20mm away from the slope roof structure board.

[0037] Step 6: When laying the transition layer steel mesh 5, first tie and fix the steel mesh 5 and the connecting bar 4. After the transition layer steel mesh 5 is tied, weld the transition layer steel mesh 5 and the connecting bar 4, fully weld on one side, and the welding length is 10d.

[0038] Step 7: According to the center line position of the water-following strip 11, weld the keel fixing steel bar 6, with a center distance of 900mm, and weld the lower part, i.e. the fixing part, to the steel mesh 7, with a welding length of 10d.

[0039] Step 8: Carry out pouring construction of concrete conversion layer 7, adopt C20 fine stone concrete for pouring construction, during the concrete construction process, attention should be paid to controlling the slump to avoid the accumulation of concrete along the sloping roof, and at the same time, the concrete conversion layer 7 is smoothed and pressed to ensure that the surface of the concrete conversion layer 7 is flat and solid, without sand and cracks, and meets the construction base requirements of the roof waterproof layer 8.

[0040] Step nine: Carry out base treatment of the roof waterproof layer 8, and after completion, carry out construction of the roof waterproof layer 8.

[0041] Step 10: After the construction of the roof waterproof layer 8 is completed, the roof insulation layer 9 is laid. The thickness of the roof insulation layer 9 is determined according to relevant thermal engineering calculations, and the roof insulation layer 9 is fully bonded with bonding mortar.

[0042] Step 11: After the construction of the roof insulation layer 9 is completed, a 20 mm thick DS mortar protective layer 10 is laid on the roof insulation layer 9, and a layer of 0.7 mm galvanized steel mesh is pressed in.

[0043] Step 12: After the DS mortar protective layer 10 is completely dry, the water-adjusting strip 11 is constructed, and the water-adjusting strip 11 is welded to the top of the keel fixing steel bar 6, with a welding length of 10d and full welding on both sides.

[0044] Step 13: After the welding of the water-following bar 11 is completed, the tile-hanging bar 12 is welded to the water-following bar 11. The welding position is fully welded on both sides, and the center distance of the tile-hanging bar 12 is 660mm.

[0045] Step 14: Install the roof tiles 13 and connect the roof tiles 13 to the tile hanging strips 12 using dovetail nails.

[0046] The above embodiments are only some descriptions of the concept and implementation of the utility model, and are not intended to limit the concept and implementation of the utility model. Under the concept of the utility model, technical solutions that have not been substantially changed are still within the scope of protection.

Claims

1. A sloping roof structure for renovation of old residential areas, comprising a ridge beam (1) and a roof eaves ring beam (2), a sloping roof structural plate (3) being arranged between the ridge beam (1) and the roof eaves ring beam (2), characterized in that: Connecting bars (4) are longitudinally implanted along the ridge beam (1) and the roof cantilever ring beam (2); a conversion layer steel mesh (5) is installed on the sloping roof structure plate (3) via the connecting bars (4); a plurality of keel fixing steel bars (6) are arranged on the conversion layer steel mesh (5); a concrete conversion layer (7) is poured above the sloping roof structure plate (3); the conversion layer steel mesh (5) is located inside the concrete conversion layer (7); the top of the keel fixing steel bar (6) is located outside the concrete conversion layer (7); a roof waterproofing layer (8), a roof insulation layer (9) and a DS mortar protective layer (10) are sequentially laid above the concrete conversion layer (7); a plurality of water-adjusting strips (11) are longitudinally arranged above the DS mortar protective layer (10) and fixed via the top of the keel fixing steel bar (6); a plurality of tile hanging strips (12) are transversely arranged above the water-adjusting strips (11); and roof tiles (13) are laid above the tile hanging strips (12).

2. The slope roof structure for renovation of old residential areas according to claim 1 is characterized in that: The connecting bar (4) is made by bending a steel bar, and comprises an implantation portion and a bending portion, the implantation portion being longitudinally implanted into the ridge beam (1) or the roof eaves ring beam (2), and the bending portion being arranged in contact with the sloping roof structure plate (3).

3. The slope roof structure for renovation of old residential areas according to claim 1 is characterized in that: The keel fixing steel bars (6) are made by bending steel bars, and comprise a fixing portion and a connecting portion, wherein the fixing portion is fitted and fixed on the conversion layer steel mesh (5), and the connecting portion is in a vertically arranged state.

4. The slope roof structure for renovation of old residential areas according to claim 1 or 2 is characterized in that: The intersection position of the upper ends of the plurality of water-following strips (11) and the ridge beam (1) is the implantation position of the connecting bar (4); the intersection position of the lower ends of the plurality of water-following strips (11) and the roof eaves ring beam (2) is the implantation position of the connecting bar (4).

5. The slope roof structure for renovation of old residential areas according to claim 1 is characterized in that: The distance between the conversion layer steel mesh (5) and the slope roof structure plate (3) is 20 mm.

6. The slope roof structure for renovation of old residential areas according to claim 1 or 5, characterized in that: The conversion layer steel mesh (5) is a mesh structure made of steel bars, arranged in a single layer and in two directions.

7. The slope roof structure for renovation of old residential areas according to claim 1 is characterized by: A galvanized steel plate mesh is arranged in the DS mortar protective layer (10).

8. The slope roof structure for renovation of old residential areas according to claim 1 or 7, characterized in that: The DS mortar protective layer (10) has a thickness of 20 mm.

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