Combined prefabricated roof structure

Abstract

The utility model belongs to the field of assembly type building roof structures, and provides a combined prefabricated roof structure which comprises cross beams, wall bodies and roof purlins, the cross beams are used for connecting the wall bodies on the two sides, the purlins are arranged on the wall bodies, the cross beams and the wall bodies are integrally formed prefabricated parts, and the roof structure is provided with at least one prefabricated part. The roof structure formed by combining and prefabricating the beams and the walls is adopted, and the problems that according to an assembly type concrete roof structure, the beams and the walls need to be prefabricated and hoisted respectively, then node connection of the beams and the walls is conducted on site, and construction efficiency is low are solved; the beams and the walls in the roof structure are integrally poured and integrally formed in a factory to form the combined prefabricated roof structure, the beams and the walls do not need to be prefabricated and hoisted respectively, beam and wall joint connection does not need to be conducted on site, and the construction efficiency is high; only beams and walls in the roof structure are integrally prefabricated, a pitched roof does not need to be prefabricated, and the weight of the roof and the building cost are not increased.

Description

Technical Field

[0001] The utility model relates to the field of assembled building roof structures, in particular to a combined prefabricated roof structure. Background Art

[0002] The prefabricated concrete roof structure is a roof structure composed of roof components prefabricated in the factory. Since the roof components are prefabricated in the factory, the wet work on the construction site is greatly reduced, thereby reducing on-site construction waste and saving water for concrete maintenance. At the same time, it reduces noise pollution caused by concrete vibration and dust pollution caused by steel bar cutting. Compared with cast-in-place roof structures, the prefabricated concrete roof structure has obvious advantages in energy saving and environmental protection.

[0003] At present, the roof components of prefabricated concrete roof structures are mostly roof beams, roof panels and walls that are prefabricated in factories, transported to the site and hoisted to the designated location, and connected and installed on site through the reserved nodes at the contact points between the components to form an overall load-bearing roof structure. However, this method requires prefabrication and hoisting of beams and walls separately, and then connection at the nodes on the construction site, which is time-consuming and labor-intensive, and has low construction efficiency.

[0004] Patent No. CN108824648A discloses a spatial modular house, including a prefabricated house body and a prefabricated roof, wherein the prefabricated roof is also a combined prefabricated roof structure. However, the prefabricated roof structure in the utility model requires prefabricated slope roofs on both sides. This practice will not only increase the weight of the roof, but also increase the load borne by the structure, thereby increasing the cross-section of the house's load-bearing components, and further increasing the cost of the house.

[0005] Disadvantages of existing technologies: 1. The prefabricated concrete roof structure requires the beams and walls to be prefabricated and hoisted separately, and then the beam and wall nodes are connected on site, which has low construction efficiency. 2. The slope roof needs to be prefabricated, which increases the weight of the roof and the cost of the house.

[0006] Therefore, a combined prefabricated roof structure is needed, which can prefabricate and hoist the beams and walls in the roof structure, without the need to connect the beams and walls on site, thereby improving construction efficiency and not increasing the weight of the roof and the cost of the house. Utility Model Content

[0007] The purpose of the utility model is to overcome the above-mentioned deficiencies of the prior art and to provide a combined prefabricated roof structure which does not require the beams and walls to be prefabricated and hoisted separately and the nodes of the beams and walls to be connected on site, and does not require the prefabricated slope roof, and does not increase the weight of the roof and the cost of the house.

[0008] The technical solution of the utility model is: a combined prefabricated roof structure, including beams, walls and roof purlins, the beams are used to connect the walls on both sides, the purlins are arranged on the walls, the beams and the walls are prefabricated components formed in one piece, and the roof structure is provided with at least one prefabricated component.

[0009] The advantage of this solution is that by combining the beams and the walls into an integral prefabricated part, the tedious work of assembling the prefabricated parts and the weight of the roof using a full prefabricated structure are reduced, thus resolving the conflicting problems. At the same time, the use of an integral structure avoids the use of connectors to connect, thereby improving the overall structural strength of the roof and the efficiency of the roof structure construction.

[0010] Furthermore, the wall is an isosceles triangle, and two adjacent transverse prefabricated components are connected by a second crossbeam. Preferably, the wall adopts an isosceles triangle, other triangular structures, or the top of the wall is a wavy structure, which is convenient for improving the design flexibility and aesthetics of the roof structure. At the same time, it is designed and selected according to the drainage conditions of the roof, and can be a long slope on one side and a short slope on the other side; the walls are prefabricated into one by connecting the crossbeams to ensure its structural strength and the efficiency and convenience of installation and construction; when the area of ​​the roof is large, multiple prefabricated components can be set, and the two adjacent prefabricated components in the transverse direction are connected and fixed by the second crossbeam. Multiple second crossbeams can be set, and the second crossbeam at the upper end of the wall is matched with the crossbeam on the prefabricated component. A reinforcing beam is added at the lower end of the wall to improve the connection strength and stability between the prefabricated components and ensure the overall structural strength of the roof.

[0011] Furthermore, the wall is a right triangle, and two adjacent longitudinal prefabricated components are fixedly connected by a crossbeam, and embedded parts are provided on the crossbeam and fastened by bolts.

[0012] Preferably, in order to reduce the overall lifting weight, improve the lifting safety and the installation efficiency of the prefabricated components, two right-angled triangle prefabricated components are longitudinally combined to form an integral prefabricated component. The prefabricated components are right-angled triangle wall tops connected as one piece by cross beams. In order to ensure the overall structural strength of the prefabricated component, two longitudinally adjacent prefabricated components are fastened together by bolts on the cross beams.

[0013] Furthermore, the two adjacent transverse prefabricated components are connected by a second cross beam, and an embedded part is provided at the connection. Preferably, a reinforcing beam is provided at the lower end of the wall, and the reinforcing beam at the lower end can be arranged parallel to the second cross beam at the upper end, or the prefabricated components can be connected in a cross manner to enhance the overall strength of the roof structure.

[0014] Furthermore, a reinforcing beam is provided at the lower end of the wall, or a ventilation window is provided on the wall. Preferably, the provision of the ventilation window is convenient for reducing the weight of the wall, and is convenient for ventilation and air circulation on the roof, thereby improving the heat insulation effect in summer.

[0015] Furthermore, a purlin mounting platform is provided on the upper surface of the wall, and the purlin is fixed by bolts or concrete after installation, thereby improving the installation effect of the purlin, avoiding uneven placement of the purlin or solving the problem of inconvenient purlin installation.

[0016] Furthermore, the purlin mounting platform is provided with embedded parts, and the purlin is mounted and fixed on the mounting platform through the embedded parts, thereby improving the connection strength between the purlin and the wall.

[0017] Furthermore, the second cross beam and the reinforcement beam are both concrete beams or I-beams. The reinforcement beam cannot use metal tie rods, which is convenient for improving installation and ensuring the structural strength of the roof structure.

[0018] A method for manufacturing a prefabricated roof structure comprises the following steps:

[0019] The first step is to make a prefabricated component mold;

[0020] The second step is to embed the connecting parts between the purlin and the wall at the installation place of the roof purlin of the wall, and embed the grouting sleeve, corrugated pipe or bolt connection in the wall;

[0021] The third step is to cast the walls on both sides of the prefabricated components and the beams on the top as a whole in the factory to form an integrated structure;

[0022] The fourth step is to fix the prefabricated components at the construction site through temporary support devices after the prefabricated components are completed in the factory, and then use special lifting equipment to lift the prefabricated components to the designated location;

[0023] The fifth step is to connect the roof structure and the lower structure by grouting sleeves pre-buried in the wall, or grouting anchors pre-buried corrugated pipes, or bolting the upper and lower walls to ensure the safety of the structure. After the connection is completed, the temporary support device for hoisting is removed;

[0024] The sixth step is to place the roof purlins on the upper surface of the walls on both sides and connect the purlins to the walls through the pre-embedded connectors.

[0025] Furthermore, in the first step, purlin mounting platforms are arranged at equal intervals on the oblique sides of the wall, and the purlins are mounted and fixed on the mounting platforms by connecting pieces.

[0026] The utility model has the following characteristics:

[0027] The utility model adopts a roof structure that prefabricates beams and walls, which solves the problem that the assembled concrete roof structure needs to prefabricate and hoist the beams and walls separately, and then connect the beams and walls at the site, which leads to low construction efficiency.

[0028] 1. The beams and walls in the roof structure are integrally cast in the factory and formed into a combined prefabricated roof structure. There is no need to prefabricate and hoist the beams and walls separately, and there is no need to connect the beams and walls on site, which has high construction efficiency;

[0029] 2. Only the beams and walls of the roof structure are prefabricated as a whole, and there is no need to prefabricate the pitched roof, which does not increase the weight of the roof and the cost of the house;

[0030] 3. The roof purlin installation platform is used to place the roof purlins to support the purlins.

[0031] The detailed structure of the present utility model is further described below in conjunction with the accompanying drawings and specific implementation methods. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] Figure 1 - is a schematic diagram of the installation of the roof structure of the utility model;

[0033] Figure 2 - is a schematic diagram of the structure of the prefabricated component of the utility model;

[0034] Figure 3 - is another structural schematic diagram of the prefabricated component of the utility model;

[0035] Figure 4 -for Figure 3 Schematic diagram of the medium waist trapezoidal wall reinforcement structure;

[0036] Figure 5 - is a schematic diagram of the structure of the prefabricated part of the utility model;

[0037] Figure 6 -for Figure 5 Schematic diagram of the reinforcement structure of the prefabricated parts;

[0038] 1-substructure, 2-wall, 3-crossbeam, 4-second crossbeam, 5-mounting platform, 6-reinforcement beam. DETAILED DESCRIPTION

[0039] As shown in the accompanying drawings: a combined prefabricated roof structure includes a cross beam 3, a wall 2 and a roof purlin. The cross beam 3 is used to connect the walls 2 on both sides, the purlin is arranged on the wall 2, the cross beam 3 and the wall 2 are integrally formed prefabricated components, and the roof structure is provided with at least one prefabricated component.

[0040] This solution combines the cross beam 3 and the wall 2 into an integral prefabricated component, thereby reducing the tedious work of assembling the prefabricated components and the weight of the roof using a full prefabricated component structure, thereby solving the conflicting problems. At the same time, the use of an integral structure avoids the use of connectors to increase the overall structural strength of the roof and improves the efficiency of roof structure construction.

[0041] In the embodiment, the wall 2 is an isosceles triangle, and two adjacent transverse prefabricated components are connected by a second crossbeam 4. Preferably, the wall 2 adopts an isosceles triangle, other triangular structures, or the top of the wall 2 is a wavy structure, which is convenient for improving the design flexibility and aesthetics of the roof structure. At the same time, it is designed and selected according to the drainage conditions of the roof, and can be a structure with a long slope on one side and a short slope on the other side. In this embodiment, the wall 2 is an isosceles triangle; the walls 2 are connected and prefabricated into one by a crossbeam 3 to ensure its structural strength and the efficiency and convenience of installation and construction; when the area of ​​the roof is large, multiple prefabricated components can be set, and the two adjacent prefabricated components in the transverse direction are connected and fixed by the second crossbeam 4 to improve the structural strength of the entire roof structure. Multiple second crossbeams 4 can be set, and the second crossbeam 4 at the top of the wall 2 is matched with the crossbeam 3 on the prefabricated component. A reinforcing beam 6 is added at the lower end of the wall 2 to facilitate improving the connection strength and stability between the prefabricated components and ensure the overall structural strength of the roof.

[0042] In another embodiment, the wall 2 is a right triangle, and two adjacent longitudinal prefabricated components are fixedly connected by a cross beam 3, and the cross beam 3 is provided with embedded parts and fastened by bolts. Preferably, in order to reduce the overall hoisting weight, improve the hoisting safety and the installation efficiency of the prefabricated components, two prefabricated components in the shape of a right triangle are longitudinally combined into an integral prefabricated component, and the top of the prefabricated wall 2, which is a right triangle, is connected and formed as a whole by the cross beam 3. In order to ensure the structural strength of the overall prefabricated component, the two longitudinally adjacent prefabricated components are fastened by bolts on the cross beam 3. Two adjacent transverse prefabricated components are connected by a second cross beam 4, and embedded parts are provided at the connection. Preferably, a reinforcing beam 6 is added to the lower end of the wall 2, and the reinforcing beam 6 at the lower end can be arranged in parallel with the second cross beam 4 at the upper end, or the prefabricated components can be connected in a cross manner to enhance the overall strength of the roof structure.

[0043] In the embodiment, a reinforcing beam 6 is provided at the lower end of the wall 2, or a ventilation window is provided on the wall 2. Preferably, the provision of the reinforcing beam 6 effectively improves the stability of the roof structure, improves its earthquake resistance and shear resistance, and greatly strengthens the roof structure; in addition, the provision of the ventilation window facilitates the reduction of the weight of the wall 2, while facilitating the ventilation of the roof and improving the heat insulation effect in summer. Preferably, the second cross beam 4 and the reinforcing beam 6 are both concrete beams or I-beams. Preferably, in the present embodiment, the second cross beam 4 and the reinforcing beam 6 are both concrete beams; the reinforcing beam 6 may not use a metal tie rod, which is convenient for improving the convenience of installation, while ensuring the structural strength of the roof structure and reducing the overall weight of the roof structure.

[0044] In the embodiment, a purlin mounting platform 5 is provided on the upper surface of the wall 2, and the purlin is fixed by bolts or concrete after installation; the installation effect of the purlin is improved, and the uneven placement of the purlin is avoided or the problem of inconvenient installation of the purlin is solved. Preferably, the purlin mounting platform 5 is provided with embedded parts, and the purlin is installed and fixed on the mounting platform 5 by the embedded parts, so as to improve the connection strength between the purlin and the wall 2. Embodiment 2

[0045] A method for manufacturing a prefabricated roof structure comprises the following steps:

[0046] The first step is to make a prefabricated component mold, set purlin mounting platforms 5 at equal intervals on the oblique sides of the wall 2, and fix the purlins on the mounting platforms 5 through connectors;

[0047] The second step is to embed the connecting parts between the purlin and the wall at the installation place of the roof purlin of the wall, embed the grouting sleeve, corrugated pipe or bolt connection in the wall 2, and other embedded parts or connecting parts can also be used to fix the purlin on the installation platform 5 to ensure its connection strength and the stability of the roof structure;

[0048] The third step is to integrally cast the walls on both sides of the prefabricated components and the top beams in the factory to form a combined prefabricated roof structure, without the need to connect the roof beams and walls on site. This solves the problem of low construction efficiency in the prefabricated concrete roof structure, which requires the beams and walls to be prefabricated and hoisted separately, and then the beams and walls are connected on site.

[0049] The fourth step is to fix the prefabricated components at the construction site through temporary support devices after the prefabricated components are completed in the factory, and then use special lifting equipment to lift the prefabricated components to the designated location;

[0050] The fifth step is to connect the roof structure and the lower structure 1 by grouting sleeves pre-buried in the wall 2, or grouting anchors pre-buried corrugated pipes, or bolting the roof structure and the lower structure 1 on the upper and lower wall 2 to ensure the safety of the structure. After the connection is completed, the temporary support device for hoisting is removed; preferably, during the installation of the roof structure, the second cross beam 4, the reinforcing beam 6 and the wall 2 are first installed and fixed, and then the roof structure and the lower structure 1 are fixedly connected to ensure the efficiency of the installation and the stability of the roof structure, so as to ensure the structural strength of the roof structure;

[0051] The sixth step is to place the roof purlins on the upper surfaces of the walls on both sides, and connect the purlins to the walls through pre-buried connectors; preferably, after the purlins are installed, decorative tiles can be laid on the purlins to complete the installation of the entire roof structure.

[0052] The utility model adopts a roof structure in which beams and walls are prefabricated in combination, thereby solving the problem that the assembled concrete roof structure needs to prefabricate and hoist the beams and walls separately, and then connect the beams and wall nodes on site, resulting in low construction efficiency; the beams and walls in the roof structure are integrally cast in a factory and formed as one piece to form a combined prefabricated roof structure, and there is no need to prefabricate and hoist the beams and walls separately, and there is no need to connect the beams and wall nodes on site, resulting in high construction efficiency; only the beams and walls in the roof structure are prefabricated as a whole, and there is no need to prefabricate the sloped roof, thereby not increasing the roof weight and the house cost; a roof purlin mounting platform 5 is provided for placing the roof purlins to achieve the function of supporting the purlins.

[0053] The above are preferred embodiments of the present invention and the technical principles used therein. For those skilled in the art, without departing from the spirit and scope of the present invention, any obvious changes such as equivalent transformation, simple replacement, etc. based on the technical solution of the present invention are within the protection scope of the present invention.

Claims

1. A combined prefabricated roof structure, comprising a crossbeam, a wall and a roof purlin, wherein the crossbeam is used to connect the walls on both sides, and the purlin is arranged on the wall, characterized in that: The cross beams and the walls are prefabricated components formed in one piece, and the roof structure is provided with at least one prefabricated component.

2. The combined prefabricated roof structure according to claim 1, characterized in that: The wall is an isosceles triangle, and two adjacent transverse prefabricated components are connected by a second crossbeam.

3. The combined prefabricated roof structure according to claim 1, characterized in that: The wall is a right triangle, and two adjacent longitudinal prefabricated components are fixedly connected by a crossbeam, and embedded parts are arranged on the crossbeam and fastened by bolts.

4. The combined prefabricated roof structure according to claim 3, characterized in that: The two adjacent transverse prefabricated components are connected by a second crossbeam, and embedded parts are provided at the connection.

5. The combined prefabricated roof structure according to claim 1, characterized in that: A reinforcing beam is arranged at the lower end of the wall, or a ventilation window is opened on the wall.

6. The combined prefabricated roof structure according to claim 5, characterized in that: A purlin installation platform is provided on the upper surface of the wall, and the purlin is fixed by bolts or concrete after installation.

7. The combined prefabricated roof structure according to claim 6, characterized in that: The purlin mounting platform is provided with embedded parts.

8. The combined prefabricated roof structure according to claim 2 or 4, characterized in that: The second cross beam and the reinforcement beam are both concrete beams or I-beam beams.

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