Assembled roof and construction method thereof

Abstract

The present invention discloses an assembled roof and a construction method thereof, which solve the technical problems of low construction efficiency, wet operation on site, and difficult to control the quality of waterproof operation in the current steel structure building roof construction. The present invention includes a main gutter installed on the main beam of the steel structure, a secondary gutter installed on the secondary beam of the steel structure, and an integrated thermal insulation integrated panel overlapped on the main gutter and the secondary gutter; the end of the secondary gutter overlaps on the side wall of the secondary gutter. The present invention is prefabricated in a factory, with a high degree of industrialization. It only needs to be hoisted in sequence on site, with high construction efficiency, avoiding the impact of wet operation on site on the surrounding environment; the integrated thermal insulation integrated panel adopts industrial production, and adopts suitable thermal insulation materials according to the climatic conditions of the applicable area to improve the thermal insulation performance. Factory production can make the thermal insulation and waterproof performance quality more stable and controllable. The present invention can effectively solve the technical problems of low construction efficiency, wet operation on site affecting the surrounding environment, and difficult to control the quality of waterproof operation in the current steel structure building roof construction.

Description

Technical Field

[0001] The invention belongs to the technical field of building construction, and particularly relates to an assembled roof and a construction method thereof. Background Art

[0002] With the acceleration of the pace of industrial construction, prefabricated steel structure buildings are increasingly widely used due to their high construction efficiency. At present, the construction method of traditional steel structure building roofs is to hoist the composite plate or corrugated steel plate to the roof, take support measures to support it, pour concrete after the support is stable, and then carry out slope adjustment, insulation and waterproofing.

[0003] The above-mentioned steel structure building roof construction method has the following disadvantages: First, the construction period is long, which is greatly affected by weather factors, and the waterproofing effect is greatly affected by the workers' technical level. Second, before pouring concrete, reinforcement measures such as support frames need to be taken, which not only occupies construction space, but also increases construction costs. Third, pouring concrete on site is a wet operation, which has noise and environmental impacts on surrounding residential areas, which is inconsistent with the design concept of dry operation on site of prefabricated buildings.

[0004] Therefore, an assembled roof and a construction method thereof are designed to solve the technical problems of low construction efficiency, on-site wet work affecting the surrounding environment, and difficult to control the quality of waterproof work in the current steel structure building roof construction. Summary of the invention

[0005] The technical problem to be solved by the present invention is to provide a prefabricated roof and a construction method thereof, so as to at least solve part of the above-mentioned technical problems.

[0006] To achieve the above purpose, the technical solution adopted by the present invention is as follows:

[0007] An assembled roof comprises a main gutter installed on a steel structure main beam, a secondary gutter installed on a steel structure secondary beam, and an integrated thermal insulation panel overlapped on the main gutter and the secondary gutter; the end of the secondary gutter is overlapped on the side wall of the secondary gutter.

[0008] Furthermore, the integrated thermal insulation panel, the secondary gutter and the main gutter are sequentially distributed from top to bottom in the vertical direction.

[0009] Furthermore, the integrated thermal insulation panel includes a waterproof layer, a thermal insulation layer and a steel plate layer which are sequentially distributed from top to bottom.

[0010] Furthermore, main gutter rubber pads are sleeved on both side walls of the main gutter, and the ends of the secondary gutter and the corresponding integrated thermal insulation panels are overlapped on the main gutter rubber pads.

[0011] Furthermore, a secondary gutter rubber pad is sleeved on the side wall of the secondary gutter, and the corresponding integrated thermal insulation panel is overlapped on the secondary gutter rubber pad.

[0012] Furthermore, an adjustable height bolt is provided on the secondary beam of the steel structure, and the secondary gutter is installed on the secondary beam of the steel structure through the adjustable height bolt.

[0013] Furthermore, an adjusting nut is provided on the adjustable height bolt, and the elevation of the secondary gutter is adjusted by the adjusting nut on the adjustable height bolt, thereby adjusting the slope of the corresponding integrated thermal insulation panel.

[0014] Furthermore, the main gutter is connected to the floor drain through the downpipe, and a slot matching the end of the secondary gutter is provided on the main gutter, and the end of the secondary gutter is overlapped in the slot.

[0015] A construction method for an assembled roof comprises the following steps:

[0016] Step 1: Prefabricate the integrated thermal insulation board, main gutter and secondary gutter in the factory and transport them to the construction site;

[0017] Step 2: Hoist the prefabricated main gutter and fix it to the main beam of the steel structure;

[0018] Step 3: Hoist the prefabricated secondary gutter and fix it to the secondary beam of the steel structure;

[0019] Step 4: hoist the integrated thermal insulation panels one by one, and place the edges of the integrated thermal insulation panels on the side walls of the main gutter or the secondary gutter;

[0020] Step 5: Connect the lowest point of the main gutter to the floor drain through the downpipe.

[0021] Furthermore, in step three, the end of the secondary gutter is overlapped on the side wall of the main gutter; the inclination angle of the secondary gutter is adjusted by adjusting the nut on the adjustable height bolt to achieve the slope adjustment of the corresponding integrated thermal insulation panel.

[0022] Compared with the prior art, the present invention has the following beneficial effects:

[0023] The present invention has a simple structure, a scientific and reasonable design, and is easy to use. The assembled roof is prefabricated in the factory and has a high degree of industrialization. It only needs to be hoisted in sequence on site, which can effectively improve the construction efficiency and avoid the impact of wet operations on the surrounding environment. The integrated thermal insulation integrated panel adopts industrial production, and suitable thermal insulation materials can be used according to the climatic conditions of the applicable area to improve the thermal insulation performance. At the same time, factory production can make the thermal insulation and waterproof performance quality more stable and controllable. The present invention can effectively solve the technical problems of low construction efficiency, on-site wet operations affecting the surrounding environment, and difficult to control the quality of waterproof operations in the current steel structure building roof construction. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 It is a schematic diagram of the structure of the present invention.

[0025] Figure 2 for Figure 1 Center AA section view.

[0026] Figure 3 for Figure 1 Middle BB section view.

[0027] Figure 4 for Figure 1 Center CC section view.

[0028] Figure 5 This is the general drawing of the main gutter of the present invention.

[0029] Figure 6 This is a cross-sectional view of the integrated thermal insulation panel of the present invention.

[0030] The names corresponding to the reference numerals are:

[0031] 1-main gutter, 2-secondary gutter, 3-integrated insulation panel, 4-steel structure main beam, 5-steel structure secondary beam, 11-main gutter rubber pad, 12-slot, 21-secondary gutter rubber pad, 22-adjustable height bolt, 23-adjusting nut, 31-waterproof layer, 32-insulation layer, 33-steel plate layer. DETAILED DESCRIPTION

[0032] In order to make the purpose, technical solution and advantages of the present invention more clearly understood, the present invention is further described in detail below in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present invention.

[0033] Embodiment 1, as Figure 1-6 As shown, the present invention provides an assembled roof, including a main gutter 1 installed on a steel structure main beam 4, a secondary gutter 2 installed on a steel structure secondary beam 5, and an integrated thermal insulation panel 3 overlapped on the main gutter 1 and the secondary gutter 2; the end of the secondary gutter 2 is overlapped on the side wall of the main gutter 1.

[0034] The present invention has a simple structure, a scientific and reasonable design, and is easy to use. The assembled roof is prefabricated in the factory and has a high degree of industrialization. It only needs to be hoisted in sequence on site, which can effectively improve the construction efficiency and avoid the impact of wet operations on the surrounding environment. The integrated thermal insulation integrated panel adopts industrial production, and suitable thermal insulation materials can be used according to the climatic conditions of the applicable area to improve the thermal insulation performance. At the same time, factory production can make the thermal insulation and waterproof performance quality more stable and controllable. The present invention can effectively solve the technical problems of low construction efficiency, on-site wet operations affecting the surrounding environment, and difficult to control the quality of waterproof operations in the current steel structure building roof construction.

[0035] Embodiment 2, as Figure 1-6 As shown, the present invention provides an assembled roof, comprising a main gutter 1 installed on a main beam of a steel structure, a secondary gutter 2 installed on a secondary beam of a steel structure, and an integrated thermal insulation integrated board 3 overlapped on the main gutter 1 and the secondary gutter 2; the end of the secondary gutter 2 overlaps the side wall of the main gutter 1. The integrated thermal insulation integrated board 3, the secondary gutter 2 and the main gutter 1 are sequentially distributed from top to bottom in the vertical direction.

[0036] Based on Example 1, this Example 2 provides a more preferred structure of the assembled roof, specifically: the integrated thermal insulation panel 3, the secondary gutter 2 and the main gutter 1 are arranged in sequence from top to bottom in the vertical direction. Through the above arrangement, rainwater on the surface of adjacent integrated thermal insulation panels is collected in the secondary gutter and the main gutter, rainwater in the secondary gutter is collected in the main gutter, and the lowest point of the main gutter guides rainwater into the floor drain, so that rainwater can be guided into the floor drain without distinction.

[0037] Embodiment 3, as Figure 1-6 As shown, the present invention provides an assembled roof, comprising a main gutter 1 installed on a main beam of a steel structure, a secondary gutter 2 installed on a secondary beam of a steel structure, and an integrated thermal insulation panel 3 overlapped on the main gutter 1 and the secondary gutter 2; the end of the secondary gutter 2 overlaps on the side wall of the main gutter 1. The integrated thermal insulation panel 3 comprises a waterproof layer 31, a thermal insulation layer 32 and a steel plate layer 33 sequentially distributed from top to bottom.

[0038] Based on Example 1, this Example 3 provides a more preferred structure of the integrated thermal insulation integrated panel 3, specifically: the integrated thermal insulation integrated panel 3 includes a waterproof layer 31, a thermal insulation layer 32 and a steel plate layer 33 distributed in sequence from top to bottom. Through the above arrangement, the thermal insulation and waterproof performance of the integrated thermal insulation integrated panel 3 can be effectively guaranteed, and at the same time, the structural strength of the integrated thermal insulation integrated panel 3 can be effectively guaranteed, and its service life can be extended.

[0039] Embodiment 4, as Figure 1-6 As shown, the present invention provides an assembled roof, comprising a main gutter 1 installed on a main beam of a steel structure, a secondary gutter 2 installed on a secondary beam of a steel structure, and an integrated thermal insulation integrated board 3 overlapped on the main gutter 1 and the secondary gutter 2; the end of the secondary gutter 2 overlaps on the side wall of the main gutter 1. Main gutter rubber pads 11 are sleeved on both side walls of the main gutter 1, and the ends of the secondary gutter 2 and the corresponding integrated thermal insulation integrated board 3 overlap on the main gutter rubber pad 11.

[0040] Based on Example 1, this Example 4 provides a more preferred structure of the main gutter 1, specifically: main gutter rubber pads 11 are sleeved on both side walls of the main gutter 1, and the ends of the secondary gutter 2 and the corresponding integrated thermal insulation integrated board 3 are overlapped on the main gutter rubber pads 11. By sleeved the main gutter rubber pads 11 on both side walls of the main gutter 1, the main gutter is sealed with rubber pads at the joints with the secondary gutter 2 and the integrated thermal insulation integrated board, without welding or bolting, and at the same time, thermal bridges, cold bridges, and rainwater siphon effects are avoided, and the production is simple and low-cost.

[0041] Embodiment 5, as Figure 1-6 As shown, the present invention provides an assembled roof, comprising a main gutter 1 installed on the main beam of the steel structure, a secondary gutter 2 installed on the secondary beam of the steel structure, and an integrated thermal insulation integrated panel 3 overlapped on the main gutter 1 and the secondary gutter 2; the end of the secondary gutter 2 is overlapped on the side wall of the main gutter 1. Main gutter rubber pads 11 are sleeved on both side walls of the main gutter 1, and the ends of the secondary gutter 2 and the corresponding integrated thermal insulation integrated panel 3 are overlapped on the main gutter rubber pad 11. Secondary gutter rubber pads 21 are sleeved on the side walls of the secondary gutter 2, and the corresponding integrated thermal insulation integrated panel 3 is overlapped on the secondary gutter rubber pad 21.

[0042] Based on Example 1, this Example 5 provides a more preferred structure of the secondary gutter 2, specifically: a secondary gutter rubber pad 21 is sleeved on the side wall of the secondary gutter 2, and the corresponding integrated thermal insulation integrated panel 3 is overlapped on the secondary gutter rubber pad 21. By sleeved the secondary gutter rubber pad 21 on the two side walls of the secondary gutter 2, the secondary gutter 2 and the integrated thermal insulation integrated panel are sealed with a rubber pad, without welding or bolting, and at the same time, thermal bridges, cold bridges, and rainwater siphon effects are avoided, and the manufacturing is simple and low-cost.

[0043] Embodiment 6, as Figure 1-6 As shown, the present invention provides an assembled roof, comprising a main gutter 1 installed on a steel structure main beam, a secondary gutter 2 installed on a steel structure secondary beam, and an integrated thermal insulation integrated board 3 overlapped on the main gutter 1 and the secondary gutter 2; the end of the secondary gutter 2 overlaps on the side wall of the main gutter 1. Main gutter rubber pads 11 are sleeved on both side walls of the main gutter 1, and the ends of the secondary gutter 2 and the corresponding integrated thermal insulation integrated board 3 overlap on the main gutter rubber pad 11. Adjustable height bolts 22 are provided on the steel structure secondary beam, and the secondary gutter 2 is installed on the steel structure secondary beam through the adjustable height bolts 22.

[0044] Based on Example 1, this Example 6 provides a more preferred structure between the steel structure secondary beam and the secondary gutter 2, specifically: the steel structure secondary beam is provided with an adjustable height bolt 22, and the secondary gutter 2 is installed on the steel structure secondary beam through the adjustable height bolt 22. The secondary gutter is fixedly connected to the upper flange of the steel structure secondary beam through the adjustable height bolt 22, and the slope of the integrated thermal insulation integrated panel is adjusted by adjusting the height of the nut.

[0045] Embodiment 7, as Figure 1-6 As shown, the present invention provides an assembled roof, comprising a main gutter 1 installed on a main beam of a steel structure, a secondary gutter 2 installed on a secondary beam of a steel structure, and an integrated thermal insulation integrated panel 3 overlapped on the main gutter 1 and the secondary gutter 2; the end of the secondary gutter 2 is overlapped on the side wall of the main gutter 1. Main gutter rubber pads 11 are sleeved on both side walls of the main gutter 1, and the ends of the secondary gutter 2 and the corresponding integrated thermal insulation integrated panel 3 are overlapped on the main gutter rubber pad 11. An adjustable height bolt 22 is provided on the secondary beam of the steel structure, and the secondary gutter 2 is installed on the secondary beam of the steel structure through the adjustable height bolt 22. An adjusting nut 23 is provided on the adjustable height bolt 22, and the elevation of the secondary gutter 2 is adjusted by the adjusting nut 23 on the adjustable height bolt 22, thereby adjusting the slope of the corresponding integrated thermal insulation integrated panel 3.

[0046] Based on Example 6, this Example 7 provides a more preferred structure of the adjustable height bolt 22, specifically: an adjusting nut 23 is provided on the adjustable height bolt 22, and the elevation of the secondary gutter 2 is adjusted by the adjusting nut 23 on the adjustable height bolt 22, thereby adjusting the slope of the corresponding integrated thermal insulation integrated panel 3. The secondary gutter is fixedly connected to the upper flange of the secondary beam of the steel structure through the adjustable height bolt 22, and the slope of the integrated thermal insulation integrated panel is adjusted by adjusting the height of the nut 23.

[0047] Embodiment 8, as Figure 1-6 As shown, the present invention provides an assembled roof, comprising a main gutter 1 installed on the main beam of the steel structure, a secondary gutter 2 installed on the secondary beam of the steel structure, and an integrated thermal insulation integrated board 3 overlapped on the main gutter 1 and the secondary gutter 2; the end of the secondary gutter 2 overlaps on the side wall of the main gutter 1. The main gutter 1 is connected to the floor drain through a downpipe, and a slot 12 adapted to the end of the secondary gutter 2 is provided on the main gutter 1, and the end of the secondary gutter 2 overlaps in the slot 12. Through the above arrangement, rainwater on the surfaces of adjacent integrated thermal insulation integrated boards is collected in the secondary gutter and the main gutter, and rainwater in the secondary gutter is collected in the main gutter, and the lowest point of the main gutter guides rainwater into the floor drain, so that rainwater can be guided into the floor drain without distinction. By providing the slot 12 on the main gutter 1, the end of the secondary gutter 2 can be more firmly overlapped on the main gutter 1.

[0048] Embodiment 9, as Figure 1-6 As shown, the present invention provides a construction method of an assembled roof, comprising the following steps:

[0049] Step 1: Prefabricate the integrated thermal insulation board, main gutter and secondary gutter in the factory and transport them to the construction site;

[0050] Step 2: Hoist the prefabricated main gutter and fix it to the main beam of the steel structure;

[0051] Step 3: Hoist the prefabricated secondary gutter and fix it to the secondary beam of the steel structure;

[0052] Step 4: hoist the integrated thermal insulation panels one by one, and place the edges of the integrated thermal insulation panels on the side walls of the main gutter or the secondary gutter;

[0053] Step 5: Connect the lowest point of the main gutter to the floor drain through the downpipe.

[0054] The prefabricated roof of the present invention is prefabricated in the factory and has a high degree of industrialization. It only needs to be hoisted in sequence on site, which significantly improves the construction efficiency. The present invention reduces on-site welding operations and avoids wet operations such as pouring concrete. It is safe, environmentally friendly and noiseless during construction. The integrated thermal insulation integrated panel of the present invention adopts industrialized production. The thermal insulation material can be replaced according to the climatic conditions of the applicable area to improve the thermal insulation performance; factory production is conducive to the quality control of thermal insulation and waterproof performance. The joints between the prefabricated gutter and the integrated thermal insulation integrated panel of the present invention are sealed with rubber pads, without the need for welding or bolting, avoiding thermal cracks, cold bridges, and rainwater siphon effects, and the production is simple and low in cost. The connection method of the prefabricated gutter and the integrated thermal insulation integrated panel of the present invention reduces the risk of cracking of the thermal insulation layer and the waterproof layer due to thermal expansion and contraction. All components of the prefabricated roof of the present invention can be circulated and reused, with high installation and disassembly efficiency, reducing the overall use cost.

[0055] Embodiment 10, as Figure 1-6 As shown, the present invention provides a construction method of an assembled roof, comprising the following steps:

[0056] Step 1: Prefabricate the integrated thermal insulation board, main gutter and secondary gutter in the factory and transport them to the construction site;

[0057] Step 2: Hoist the prefabricated main gutter and fix it to the main beam of the steel structure;

[0058] Step 3: Hoist the prefabricated secondary gutter and fix it to the secondary beam of the steel structure;

[0059] Step 4: hoist the integrated thermal insulation panels one by one, and place the edges of the integrated thermal insulation panels on the side walls of the main gutter or the secondary gutter;

[0060] Step 5: Connect the lowest point of the main gutter to the floor drain through the downpipe.

[0061] In step three, the end of the secondary gutter is overlapped on the side wall of the main gutter; the inclination angle of the secondary gutter is adjusted by adjusting the nut on the adjustable height bolt to achieve the slope adjustment of the corresponding integrated thermal insulation panel.

[0062] The prefabricated roof of the present invention is prefabricated in the factory and has a high degree of industrialization. It only needs to be hoisted in sequence on site, which significantly improves the construction efficiency. The present invention reduces on-site welding operations and avoids wet operations such as pouring concrete. It is safe, environmentally friendly and noiseless during construction. The integrated thermal insulation integrated panel of the present invention adopts industrialized production. The thermal insulation material can be replaced according to the climatic conditions of the applicable area to improve the thermal insulation performance; factory production is conducive to the quality control of thermal insulation and waterproof performance. The joints between the prefabricated gutter and the integrated thermal insulation integrated panel of the present invention are sealed with rubber pads, without the need for welding or bolting, avoiding thermal cracks, cold bridges, and rainwater siphon effects, and the production is simple and low in cost. The connection method of the prefabricated gutter and the integrated thermal insulation integrated panel of the present invention reduces the risk of cracking of the thermal insulation layer and the waterproof layer due to thermal expansion and contraction. All components of the prefabricated roof of the present invention can be circulated and reused, with high installation and disassembly efficiency, reducing the overall use cost.

[0063] The assembled roof structure of the present invention is composed of an integrated thermal insulation integrated panel, a secondary gutter and a main gutter from top to bottom. According to the arrangement of the main and secondary beams of the roof, the roof is divided into several areas, each of which is composed of an integrated thermal insulation integrated panel and a main drainage ditch and a secondary drainage ditch. The integrated thermal insulation integrated panel is prefabricated in the factory, and is composed of a steel plate layer, a thermal insulation layer, and a waterproof layer from bottom to top.

[0064] The edges of two adjacent integrated thermal insulation panels are placed on the side walls of the U-shaped secondary gutter, and the secondary gutter rubber pads are bonded in advance along the length of the secondary gutter side walls to avoid cold and thermal bridge problems in the steel structure. The secondary gutter is fixed to the upper flange of the structural secondary beam through an adjustable height bolt structure, and the slope of the integrated thermal insulation panel can be adjusted by adjusting the height of the nut.

[0065] The end of the secondary gutter is placed on the side wall of the U-shaped main gutter, and the main gutter rubber pad is bonded in advance along the length of the main gutter side wall to avoid cold and thermal bridge problems in the steel structure. The main gutter is fixed to the upper flange of the main beam of the structure. Rainwater on the surface of adjacent integrated insulation panels is collected in the secondary gutter and the main gutter, and rainwater in the secondary gutter is collected in the main gutter. A downpipe connected to the floor drain is set at the lowest point of the main gutter, and the downpipe guides rainwater from the lowest point of the main gutter into the floor drain.

[0066] The present invention provides a construction method for an assembled roof, comprising the following steps:

[0067] Step 1: Assemble the integrated thermal insulation panels, main gutters, and secondary gutters in the factory, and transport the integrated thermal insulation panels, prefabricated gutters, nuts and other materials to the construction site.

[0068] Step 2: Hoist the prefabricated main gutter and fix it to the upper flange of the main beam of the structure.

[0069] Step 3: Hoist the prefabricated secondary gutter, fix the secondary gutter to the upper flange of the secondary beam, and adjust the inclination angle of the secondary beam through the height-adjustable bolt structure.

[0070] Step 4: Hoist the integrated thermal insulation panels one by one, and place the edges of the integrated thermal insulation panels on the side walls of the main gutter or the secondary gutter.

[0071] Step 5: Connect the prefabricated floor drain at the lowest point of the main gutter to the downpipe.

[0072] The prefabricated roof of the present invention is prefabricated in the factory and has a high degree of industrialization. It only needs to be hoisted in sequence on site, which significantly improves the construction efficiency. The present invention reduces on-site welding operations and avoids wet operations such as pouring concrete. It is safe, environmentally friendly and noiseless during construction. The integrated thermal insulation integrated panel of the present invention adopts industrialized production. The thermal insulation material can be replaced according to the climatic conditions of the applicable area to improve the thermal insulation performance; factory production is conducive to the quality control of thermal insulation and waterproof performance. The joints between the prefabricated gutter and the integrated thermal insulation integrated panel of the present invention are sealed with rubber pads, without the need for welding or bolting, avoiding thermal cracks, cold bridges, and rainwater siphon effects, and the production is simple and low in cost. The connection method of the prefabricated gutter and the integrated thermal insulation integrated panel of the present invention reduces the risk of cracking of the thermal insulation layer and the waterproof layer due to thermal expansion and contraction. All components of the prefabricated roof of the present invention can be circulated and reused, with high installation and disassembly efficiency, reducing the overall use cost.

[0073] Finally, it should be noted that the above embodiments are only preferred embodiments of the present invention to illustrate the technical solutions of the present invention, rather than limiting them, and certainly not limiting the patent scope of the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions recorded in the aforementioned embodiments, or replace some or all of the technical features therein by equivalents. These modifications or replacements do not make the essence of the corresponding technical solutions deviate from the scope of the technical solutions of the embodiments of the present invention. In other words, any changes or modifications made to the main design concept and spirit of the present invention that have no substantive significance, and the technical problems they solve are still consistent with the present invention, should be included in the protection scope of the present invention. In addition, the direct or indirect application of the technical solutions of the present invention in other related technical fields is also included in the patent protection scope of the present invention.

Claims

1. An assembled roof, characterized in that: It comprises a main gutter (1) installed on a main beam of a steel structure, a secondary gutter (2) installed on a secondary beam of the steel structure, and an integrated thermal insulation panel (3) overlapped on the main gutter (1) and the secondary gutter (2); the end of the secondary gutter (2) is overlapped on the side wall of the main gutter (1); The integrated thermal insulation panel (3), the secondary gutter (2) and the primary gutter (1) are sequentially distributed from top to bottom in the vertical direction; Main gutter rubber pads (11) are sleeved on both side walls of the main gutter (1), and the ends of the secondary gutter (2) and the corresponding integrated thermal insulation panels (3) are overlapped on the main gutter rubber pads (11); A secondary gutter rubber pad (21) is sleeved on the side wall of the secondary gutter (2), and the corresponding integrated thermal insulation panel (3) is overlapped on the secondary gutter rubber pad (21); An adjustable height bolt (22) is provided on the secondary beam of the steel structure, and the secondary gutter (2) is installed on the secondary beam of the steel structure through the adjustable height bolt (22); An adjusting nut (23) is provided on the adjustable height bolt (22), and the elevation of the secondary gutter (2) is adjusted by the adjusting nut (23) on the adjustable height bolt (22), thereby adjusting the slope of the corresponding integrated thermal insulation panel (3); The main gutter (1) is connected to the floor drain via a downpipe, and a clamping groove (12) adapted to the end of the secondary gutter (2) is provided on the main gutter (1), and the end of the secondary gutter (2) is overlapped in the clamping groove (12).

2. The assembled roof according to claim 1, characterized in that: The integrated thermal insulation panel (3) comprises a waterproof layer (31), a thermal insulation layer (32) and a steel plate layer (33) which are sequentially arranged from top to bottom.

3. A construction method for an assembled roof according to claim 1 or 2, characterized in that: The following steps are involved: Step 1: Prefabricate the integrated thermal insulation board, main gutter and secondary gutter in the factory and transport them to the construction site; Step 2: Hoist the prefabricated main gutter and fix it to the main beam of the steel structure; Step 3: Hoist the prefabricated secondary gutter and fix it to the secondary beam of the steel structure; Step 4: hoist the integrated thermal insulation panels one by one, and place the edges of the integrated thermal insulation panels on the side walls of the main gutter or the side walls of the secondary gutter; Step 5: Connect the lowest point of the main gutter to the floor drain through the downpipe.

4. The construction method according to claim 3, characterized in that: In step three, the end of the secondary gutter is overlapped on the side wall of the main gutter; the inclination angle of the secondary gutter is adjusted by adjusting the nut on the adjustable height bolt to achieve the slope adjustment of the corresponding integrated thermal insulation panel.

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