Steel structure roof structure in high altitude area and construction method thereof

Abstract

The invention relates to the technical field of building roofs, and discloses a high-altitude area steel structure roof structure and a construction method thereof.The high-altitude area steel structure roof structure comprises two sets of linearly-distributed supporting stand columns, every two transversely-adjacent supporting stand columns are connected through a supporting cross beam, and a vertical supporting component is fixedly connected to the middle of the top face of each supporting cross beam; a plurality of gradient connecting blocks are fixedly connected to the top surfaces of the supporting cross beams, and a plurality of [-shaped purlines are fixedly connected between every two adjacent supporting cross beams; the n-shaped purlines and the vertical supporting components are supported and fixed through the thermal insulation platform, after the thermal insulation layer is built on the thermal insulation platform, a distance is formed between the thermal insulation platform and the ceiling layer, a water path, a wind path and a circuit can be inserted between the thermal insulation platform and the ceiling layer, and fixing nodes are concentrated between the thermal insulation platform and the ceiling layer. The problem of influence of high-altitude day-night temperature difference on roof purline fixing nodes is solved by utilizing the characteristic that the room temperature is relatively stable.

Description

Technical Field

[0001] The present invention relates to the technical field of building roofs, and specifically to a steel structure roof structure and its construction method in high-altitude areas. Background Technique

[0002] In high-altitude areas, the temperature difference between day and night is large. The roof frame of the steel structure is mainly fixed in the form of bolts or welding. The purlins provide grid-shaped support for the roof laying surface, and the purlins and the ridge are fixed in the form of self-tapping screws, bolts or combined with welding. Fig. 9 It can be clearly seen that with the increase in the laying density of the purlins between the purlins and the ridge, a large number of fixed nodes are generated, and the fixed nodes are infinitely close to the roof surface. Due to the temperature difference between day and night, the change in temperature is more likely to act on the fixed nodes. Therefore, the fixed nodes of the purlins in high-altitude areas are easily loosened due to the thermal expansion and contraction of steel. Summary of the Invention

[0003] The purpose of the present invention is to provide a steel structure roof structure and its construction method in high-altitude areas. By using a bent integrally formed purlin for longitudinal lifting and sinking the purlin, a double-layer space is formed at the same time, so that the fixed nodes are close to the interior, reducing the influence of thermal expansion and contraction of the temperature difference between day and night on the nodes, and at the same time meeting the layout of indoor waterways, airways, and circuits and the reinforcement support for the C-shaped purlins, thereby solving the problems proposed in the above background technique.

[0004] To achieve the above purpose, the present invention provides the following technical solutions: A steel structure roof structure in high-altitude areas includes two groups of support columns distributed linearly. Between the support columns in the same group, they are connected by column connection beams. Between two adjacent support columns horizontally, they are connected by support crossbeams. The bottom surfaces of the support crossbeams and the column connection beams are flush and are enclosed by a plurality of ceiling keels to form a ceiling surface; In the middle of the top surface of the support crossbeam, a vertical support member is fixedly connected. A plurality of slope connection blocks are fixedly connected to the top surface of the support crossbeam. Between two adjacent support crossbeams, a plurality of C-shaped purlins are fixedly connected. The C-shaped purlins are fixed at the inclined surface of the slope connection blocks. A top beam is inserted into the vertical support member, and the top beam and the C-shaped purlins cooperate to form a roof installation surface; At one end of the side of the C-shaped purlin close to the slope connection block, a heat insulation platform connection hole is opened. On the vertical support member, a hole body is opened at the same horizontal plane as the heat insulation platform connection hole; There is a heat insulation platform between the ceiling surface and the roof installation surface. The heat insulation platform includes heat insulation layer purlins and circular insertion rods. The heat insulation platform is fixedly inserted through the circular insertion rods, the connection holes of the heat insulation platform, and the holes of the vertical support members. The heat insulation layer purlins are laid perpendicular to and at equal distances from the circular insertion rods.

[0005] As a further solution of the present invention: Two adjacent support crossbeams form a spanning unit, and the C-shaped purlins between each spanning unit are staggered.

[0006] As a further solution of the present invention: The width of the slope connection block can accommodate the fixation of two C-shaped purlins at the same time, and the number of C-shaped purlins in each spanning unit corresponds to the number of slope connection blocks on the top surface of a single support crossbeam.

[0007] As a further solution of the present invention: Heat insulation layer purlins are distributed on both sides of the vertical support member and the ends of the C-shaped purlins, and the heat insulation layer purlins are in contact with the side surface of the vertical support member and the side surface of the end of the C-shaped purlin.

[0008] As a further solution of the present invention: The circular insertion rods and the ceiling keels are staggered, and the fixed nodes of the heat insulation layer purlins and the circular insertion rods are vertically corresponding to the midlines of two adjacent ceiling keels.

[0009] As a further solution of the present invention: A roof steel lining foam board is laid between the top beam and the C-shaped purlin, and a lying strip is installed on the top surface of the vertical support member.

[0010] As a further solution of the present invention, a construction method for a steel structure roof structure in a high-altitude area includes: S1: First, install the support columns, and synchronously install the column connection beams and support crossbeams to form a basic rectangular frame; S2: Install the C-shaped purlins and the top beam, and fix the C-shaped purlins to the slope connection blocks and the top beam to the vertical support members to form a roof surface frame; S3: Establish a heat insulation platform with the connection holes of the heat insulation platform as the reference horizontal plane. The circular insertion rods pass through the connection holes of the heat insulation platform and the holes of the vertical support members. The heat insulation layer purlins are perpendicular to the circular insertion rods and form multiple fixed nodes with the circular insertion rods. The C-shaped purlins and the vertical support members are fixedly clamped by two heat insulation layer purlins, and heat insulation surface construction is carried out on the surface of the heat insulation platform; S4: Lay the ceiling keels with the bottom surfaces of the column connection beams and support crossbeams as the reference horizontal plane, and install the ceiling on the ceiling installation surface formed by the ceiling keels. The ceiling is fixedly connected to the ceiling keels. At the same time, the midline of the ceiling is fixed to the connection nodes of the heat insulation layer purlins and the circular insertion rods through suspender rods.

[0011] Compared with the prior art, the beneficial effects of the present invention are as follows: The column connecting beam and the support cross beam are fixed below the top end of the support column. In cooperation with the combination of the ceiling keel and the support cross beam, a sunken ceiling surface is formed. At the same time, by utilizing the height-lifting characteristic of the U-shaped purlin, after the U-shaped purlin is connected to the support cross beam, the connecting end of the U-shaped purlin descends while the height of the roof surface remains unchanged, thereby forming a longitudinal spacing. An insulation platform is built with the U-shaped purlin. The insulation platform supports and fixes the U-shaped purlin and the vertical support members. After an insulation layer is built at the insulation platform, a spacing is formed between the insulation platform and the ceiling layer. The space between the insulation platform and the ceiling layer can be used to insert water pipes, air ducts, and electric circuits, and the fixed nodes are concentrated between the insulation platform and the ceiling layer. By utilizing the relatively stable room temperature characteristic, the influence problem of the large temperature difference between day and night at high altitudes on the fixed nodes of the roof purlins is solved. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the following will briefly introduce the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings in the following description are only some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can be obtained based on these drawings.

[0013] Figure 1 is a three-dimensional schematic diagram of a steel structure roof structure in a high-altitude area; Figure 2 is a schematic diagram after the roof steel lining foam board in a steel structure roof structure in a high-altitude area is removed; Figure 3 In Figure 2 is a schematic diagram after the insulation layer and the ceiling are removed on the basis of; Figure 4 is Figure 3 is a schematic diagram after the insulation platform and the ceiling keel are removed on the basis of; Figure 5 is Figure 3 is a three-dimensional schematic diagram after the ceiling keel is removed on the basis of; Figure 6 is a three-dimensional schematic diagram of another perspective of a steel structure roof structure in a high-altitude area; Figure 7 is a comparison schematic diagram of two fixing methods of the U-shaped purlin in a steel structure roof structure in a high-altitude area; Figure 8 is a front view schematic diagram of a steel structure roof structure in a high-altitude area; Fig. 9 is a fixing schematic diagram of the existing roof purlin at present; In the figure: 1. Support column; 11. Column connecting beam; 2. C-shaped purlin; 21. Thermal insulation platform connection hole; 3. Support cross beam; 31. Slope connection block; 32. Vertical support member; 4. Top beam; 5. Thermal insulation platform; 51. Thermal insulation layer purlin; 52. Round insertion rod; 6. Ceiling keel; 7. Roof steel lining foam board. Detailed implementation manner

[0014] In high-altitude areas, the temperature difference between day and night is large. The roof frame of the steel structure is mainly fixed by bolts or welding. The purlins provide grid-shaped support for the roof laying surface. Between the purlins and the ridge, they are fixed by self-tapping screws, bolts or a combination of welding. By Fig. 9 It can be clearly seen that with the increase in the laying density of the purlins between the purlins and the ridge, a large number of fixed nodes are generated. The fixed nodes are infinitely close to the roof surface. Due to the reason of the day-night temperature difference, the change of temperature is more likely to act on the fixed nodes. Therefore, the fixed nodes of the purlins in high-altitude areas are frequently affected by the thermal expansion and contraction of the steel, and are very easy to become loose.

[0015] Please refer to Figure 1-Figure 8 : In this embodiment: It includes two groups of support columns 1 distributed linearly. The support columns 1 in the same group are connected by column connecting beams 11. The two adjacent support columns 1 in the transverse direction are connected by support cross beams 3. The bottom surfaces of the support cross beams 3 and the column connecting beams 11 are flush and are closed by a plurality of ceiling keels 6 to form a ceiling surface of the internal house.

[0016] Please refer to Figure 3 , First, the support column 1 is used as the main longitudinal support. The bottom of the support column 1 can be fixedly connected to the pile foundation. In order to increase the structural stability, first, the column connecting beam 11 and the support cross beam 3 are used in cooperation with the support column 1 to form a rectangular frame structure. This structure is the basic frame. However, in order to solve the problem that the purlins are close to the roof surface, resulting in frequent and direct influence on the fixed nodes by heat and cold, therefore, the fixed nodes of the purlins are lowered. Therefore, the column connecting beam 11 and the support cross beam 3 are fixed in the area where the top of the support column 1 extends downward. By reducing the heights of the column connecting beam 11 and the support cross beam 3, and cooperating with the ceiling keel 6 to close the surfaces of the column connecting beam 11 and the support cross beam 3, the ceiling surface of the internal house is formed.

[0017] A vertical support member 32 is fixedly connected to the middle of the top surface of the support cross beam 3. A plurality of slope connection blocks 31 are fixedly connected to the top surface of the support cross beam 3. A plurality of C-shaped purlins 2 are fixedly connected between two adjacent support cross beams 3. The C-shaped purlins 2 are fixed at the inclined surface of the slope connection block 31. A top beam 4 is inserted into the vertical support member 32. The top beam 4 and the C-shaped purlins 2 cooperate to form a roof installation surface.

[0018] The vertical support member 32 is fixed in the middle of the support crossbeam 3. The top surface height of the vertical support member 32 is the highest point of the entire roof. If the span of the support crossbeam 3 increases, support columns can be set at the bottom of the support crossbeam 3. The support columns are located below the vertical support member 32 to support the middle part of the support crossbeam 3. The U-shaped purlin 2 is prefabricated in the form of non-welded bending processing to avoid cracking problems caused by the alternation of heat and cold near the roof area at the welded joint area. The end of the U-shaped purlin 2 is fixed to the slope connecting block 31, and the fixing method can be fixed by bolts, welding, or a combination of the former two. At this time, due to the sunken design of the support crossbeam 3, the fixing node of the U-shaped purlin 2 and the slope connecting block 31 is close to the indoor area, and the relatively constant temperature environment in the indoor area is used to improve the stability of the fixing node of the U-shaped purlin 2 and the slope connecting block 31. The closer the U-shaped purlin 2 is to the vertical support member 32, the longer its length, so that the top surface of the U-shaped purlin 2 forms a smooth inclined plane with the top beam 4, thereby providing a support framework for the capping structure.

[0019] An insulating platform connection hole 21 is provided at one end of the side of the U-shaped purlin 2 close to the slope connecting block 31. A hole body is provided on the vertical support member 32 at the same horizontal plane as the insulating platform connection hole 21. There is an insulating platform 5 between the ceiling surface and the roof installation surface. The insulating platform 5 includes an insulating layer purlin 51 and a circular insertion rod 52. The insulating platform 5 is fixedly inserted through the circular insertion rod 52, the insulating platform connection hole 21, and the hole body of the vertical support member 32. The insulating layer purlins 51 are laid perpendicular and equidistantly to the circular insertion rod 52.

[0020] Due to the setting of the U-shaped purlin 2, a vertical distance is generated between the support surface and the fixed point. When the length of the U-shaped purlin 2 increases, it is easy to have a problem of force-induced bending. Therefore, an insulating platform connection hole 21 is provided at the U-shaped purlin 2 close to the slope connecting block 31. First, the circular insertion rod 52 is inserted into the insulating platform connection hole 21. Please refer to Figure 3 , the circular insertion rod 52 is inserted into the insulating platform connection hole 21 and laid flat along the support crossbeam 3. At this time, the insulating platform connection hole 21 and the U-shaped purlin 2 play a limiting role. At the same time, the circular insertion rod 52 is fixed perpendicular to the insulating layer purlin 51, and multiple fixed points are generated between two adjacent insulating layer purlins 51, so as to reinforce between adjacent U-shaped purlins 2. At the same time, if the roof slope is too large, the vertical height of the U-shaped purlin 2 will increase. Through the fixing method of the insulating platform 5, the end point and the non-horizontal rod of the U-shaped purlin 2 have two-point support, which improves the force-bearing strength of the U-shaped purlin 2. And pipelines for ventilation, water supply, and power supply will also be set in the house. At this time, an insulating layer is provided through the insulating platform 5. The U-shaped purlin 2, the fixing node of the support crossbeam 3, and the pipelines are located between the insulating layer and the ceiling layer, which closes and insulates the pipelines and the connection nodes of the U-shaped purlin 2 and the support crossbeam 3, and at the same time reinforces the U-shaped purlin 2 to meet the actual use requirements.

[0021] Two adjacent support cross beams 3 form a spanning unit, and the U-shaped purlins 2 between each spanning unit are staggered. When the roof steel-lined foam board 7 is used as the roof closure board, the roof steel-lined foam board 7 has good heat insulation effect and strength, and the roof steel-lined foam board 7 has a good supporting effect. At this time, please refer to Figure 2 , the staggered U-shaped purlins 2 ensure the width of the U-shaped purlins 2 without increasing the width of the support cross beam 3 and the slope connection block 31. However, the gap between two adjacent U-shaped purlins 2 and between the U-shaped purlin 2 and the top beam 4 increases. At this time, it is fixed with the roof steel-lined foam board 7. And the roof steel-lined foam board 7 itself is light in weight, and the roof steel-lined foam board 7 has a certain strength. Therefore, it can make up for the deficiency of the large spacing of the U-shaped purlins 2.

[0022] The width of the slope connection block 31 can accommodate the fixation of two U-shaped purlins 2 at the same time, and the number of U-shaped purlins 2 in each spanning unit corresponds to the number of slope connection blocks 31 on the top surface of a single support cross beam 3.

[0023] Please refer to Figure 7 , when the width of the slope connection block 31 can meet the fixation of two U-shaped purlins 2, at this time the spacing of the U-shaped purlins 2 is significantly reduced, and the design strength of this structure is increased, and it can be applied to areas with strong winds, or small roof closure units are used for connection.

[0024] Thermal insulation purlins 51 are distributed on both sides of the ends of the vertical support member 32 and the U-shaped purlin 2, and the thermal insulation purlins 51 are in contact with the side surface of the vertical support member 32 and the side surface of the end of the U-shaped purlin 2.

[0025] Please refer to Figure 5 , when two adjacent thermal insulation purlins 51 are fixed to the round insert rod 52, and at the same time the thermal insulation purlins 51 limit the U-shaped purlin 2 and the vertical support member 32, the thermal insulation purlins 51 can limit the movement of the U-shaped purlin 2 and the vertical support member 32 along the axial direction of the round insert rod 52. At the same time, the round insert rod 52 can limit the movement of the U-shaped purlin 2 and the vertical support member 32 along the axial direction of the thermal insulation purlin 51, thereby forming a composite strengthening surface. And the composite strengthening surface is still in a sunken design away from the roof, thereby reducing the environmental influence on the fixed nodes.

[0026] The round insert rods 52 and the ceiling keel 6 are staggered, and the fixed nodes of the thermal insulation purlins 51 and the round insert rods 52 are vertically corresponding to the midlines of two adjacent ceiling keels 6.

[0027] The ceiling keel 6 moves along the direction of the heat insulation layer purlin 51. Since the bottom surface of the ceiling keel 6 is not flush with the bottom surfaces of the column connecting beam 11 and the support cross beam 3, fixing along the ceiling keel 6 will result in no support for the middle part of the top plate, that is, the part of the top plate between two adjacent ceiling keels 6. Therefore, the circular inserting rods 52 and the ceiling keels 6 are distributed alternately, and the fixing nodes formed by the heat insulation layer purlins 51 and the circular inserting rods 52 can be suspended and fixed with the middle part of the top plate module installed on the ceiling in the form of suspender rods and suspension ropes to ensure stability.

[0028] A batten is installed on the top surface of the vertical support member 32, and the batten can seal the splicing gap between two roof steel-lined foam boards 7 to avoid water leakage problems.

[0029] Construction method: S1: First, install the support columns 1, and synchronously install the column connecting beams 11 and the support cross beams 3 to form a basic rectangular frame; S2: Install the U-shaped purlins 2 and the top beam 4, fix the U-shaped purlins 2 to the slope connecting block 31, and fix the top beam 4 to the vertical support member 32 to form a roof surface frame; S3: Establish the heat insulation platform 5 with the heat insulation platform connection hole 21 as the reference horizontal plane. The circular inserting rods 52 pass through the holes of the heat insulation platform connection hole 21 and the vertical support member 32. The heat insulation layer purlins 51 are perpendicular to the circular inserting rods 52 and form multiple fixing nodes with the circular inserting rods 52. Moreover, the U-shaped purlins 2 and the vertical support member 32 are clamped and fixed by two heat insulation layer purlins 51, and heat insulation surface construction is carried out on the surface of the heat insulation platform 5; S4: Lay the ceiling keel 6 with the bottom surfaces of the column connecting beam 11 and the support cross beam 3 as the reference horizontal plane, and install the ceiling on the ceiling installation surface formed by the ceiling keel 6. The ceiling is fixedly connected to the ceiling keel 6. At the same time, the middle line of the ceiling is fixedly connected to the connection nodes between the heat insulation layer purlins 51 and the circular inserting rods 52 through suspender rods.

[0030] The above-mentioned is only the preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any person skilled in the art within the technical scope disclosed by the present invention, according to the technical solution and inventive concept of the present invention, makes equivalent replacements or changes, and all should be covered within the protection scope of the present invention.

Claims

1. A steel roof structure for high altitude areas, comprising two groups of linearly distributed support columns (1), wherein the support columns (1) in the same group are connected by a column connecting beam (11), and two laterally adjacent support columns (1) are connected by a supporting cross beam (3), characterized in that: The bottom surfaces of the support cross beam (3) and the column connecting beam (11) are flush and are enclosed by a plurality of ceiling keels (6) to form a ceiling surface; In the middle of the top surface of the support cross beam (3), a vertical support member (32) is fixedly connected. A plurality of slope connection blocks (31) are fixedly connected to the top surface of the support cross beam (3). A plurality of U-shaped purlins (2) are fixedly connected between two adjacent support cross beams (3). The U-shaped purlins (2) are fixed at the inclined surfaces of the slope connection blocks (31). A top beam (4) is inserted into the vertical support member (32). The top beam (4) and the U-shaped purlins (2) cooperate to form a roof installation surface; At one end of the side of the U-shaped purlin (2) close to the slope connection block (31), a heat insulation platform connection hole (21) is provided. On the vertical support member (32), a hole body is provided at the same horizontal plane as the heat insulation platform connection hole (21); There is a heat insulation platform (5) between the ceiling surface and the roof installation surface. The heat insulation platform (5) includes a heat insulation layer purlin (51) and a circular insertion rod (52). The heat insulation platform (5) is fixedly inserted through the heat insulation platform connection hole (21) and the hole body of the vertical support member (32) by the circular insertion rod (52). The heat insulation layer purlins (51) are laid perpendicular and equidistantly to the circular insertion rod (52); 2. The high altitude steel roof structure according to claim 1, characterized in that: Two adjacent support cross beams (3) form a spanning unit, and the U-shaped purlins (2) between each spanning unit are staggeredly distributed; 3. The high altitude steel roof structure according to claim 2, characterized in that: The width of the slope connection block (31) can accommodate the fixation of two U-shaped purlins (2) at the same time. The number of U-shaped purlins (2) in each spanning unit corresponds to the number of slope connection blocks (31) on the top surface of a single support cross beam (3); 4. The high altitude steel roof structure according to claim 1, characterized in that: The heat insulation layer purlins (51) are distributed on both sides of the ends of the vertical support member (32) and the U-shaped purlins (2), and the heat insulation layer purlins (51) are in contact with the side surface of the vertical support member (32) and the side surface of the end of the U-shaped purlin (2); 5. The high altitude steel roof structure according to claim 1, characterized in that: The circular insertion rods (52) and the ceiling keels (6) are staggeredly distributed. The fixed nodes of the heat insulation layer purlins (51) and the circular insertion rods (52) are vertically corresponding to the midlines of two adjacent ceiling keels (6); 6. The high altitude steel roof structure according to claim 1, characterized in that: A roof steel lining foam board (7) is laid between the top beam (4) and the U-shaped purlins (2), and a batten is installed on the top surface of the vertical support member (32); 7. A method for constructing a steel roof structure in a high altitude area according to any one of claims 1 to 6, characterized in that: Including: S1: First, install the support columns (1), and synchronously install the column connecting beams (11) and the support cross beams (3) to form a basic rectangular frame; S2: Install the U-shaped purlins (2) and the top beam (4), fix the U-shaped purlins (2) to the slope connection blocks (31), and fix the top beam (4) to the vertical support member (32) to form a roof surface frame; S3: Establish the heat insulation platform (5) with the heat insulation platform connection hole (21) as the reference horizontal plane. The circular insertion rod (52) passes through the heat insulation platform connection hole (21) and the hole body of the vertical support member (32). The heat insulation layer purlin (51) is perpendicular to the circular insertion rod (52) and forms multiple fixed nodes with the circular insertion rod (52). Moreover, the C-shaped purlin (2) and the vertical support member (32) are clamped and fixed by two heat insulation layer purlins (51), and heat insulation surface construction is carried out on the surface of the heat insulation platform (5); S4: Lay the ceiling keel (6) with the bottom surfaces of the column connection beam (11) and the support cross beam (3) as the reference horizontal planes, and install the ceiling on the ceiling installation surface formed by the ceiling keel (6). The ceiling is fixedly connected to the ceiling keel (6). At the same time, the connection nodes between the midline of the ceiling and the heat insulation layer purlin (51) and the circular insertion rod (52) are fixed by suspender rods.

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