Roof-out steel column joint and building structure with same

Abstract

The utility model relates to the technical field of building construction, in particular to an out-of-roof steel column joint and a building structure with the same, the out-of-roof steel column joint comprises a steel frame beam on which a building roof is constructed, and a steel column mounting gap is reserved on the building roof; the steel column body is installed in the steel column installation gap, the steel column body penetrates through the building roof and is installed on the steel frame beam in a supported mode, the outer side wall of the steel column body is wrapped with an outer heat preservation layer, the outer heat preservation layer abuts against the building roof, an inner heat preservation part is arranged in an inner cavity of the steel column body, and the inner cavity of the steel column body is completely filled with the inner heat preservation part. Through the cooperation of the internal heat preservation part and the external heat preservation layer, the heat dissipation amount of indoor heat from the steel column body to the outside can be effectively blocked, energy dissipation at a roof steel column node formed by the steel column body and the steel frame beam can be greatly reduced, the heat bridge effect at the roof steel column node is weakened, and then the energy consumption level of a whole building can be reduced.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of building construction, specifically relates to a roof steel column node and building structure with same. BACKGROUND

[0002] The industrial plant roof is an important part of the building envelope structure, and its thermal performance directly affects the overall energy consumption level of the building. Although the conventional roof system reduces the overall heat conduction of the roof by laying a rock wool board or the like thermal insulation layer, the thermal insulation layer is often forced to be disconnected or discontinuous in construction due to the presence of steel columns, pipelines and other components penetrating the roof in the industrial plant, resulting in forced local interruption of the thermal insulation layer. The high-thermal-conductivity metal components at such penetrating nodes directly connect the indoor and outdoor environments, forming a significant thermal bridge effect. The thermal bridge not only causes heat loss, but also leads to an increase in the overall energy consumption of the building, which is contrary to the development goal of green building with low energy consumption and high energy efficiency.

[0003] In actual industrial plant projects, the roof steel column node is a typical high-thermal-bridge area. In the prior art, the gap between the steel column and the roof thermal insulation layer at the roof steel column node is usually filled with rock wool strips, but due to the high thermal conductivity of the steel column itself and the influence of steel column vibration and temperature deformation, the filling material is prone to loosen or fall off, resulting in intensified thermal bridge effect. Moreover, the sealing glue or coiled material closing process of the waterproof structure at the root of the steel column often needs to reserve a construction gap, further weakening the integrity of the thermal insulation layer. SUMMARY

[0004] Therefore, the utility model provides a roof steel column node to solve the problem of high thermal bridge effect at the roof steel column node in the prior art.

[0005] In a first aspect, the utility model provides a roof steel column node, comprising:

[0006] A steel beam on which a building roof is constructed, and a steel column installation gap reserved on the building roof;

[0007] A steel column body installed in the steel column installation gap, and the steel column body penetrates the building roof and is supported and installed on the steel beam, an external thermal insulation layer is wrapped on the outer side wall of the steel column body, the external thermal insulation layer is in abutment with the building roof, an internal thermal insulation piece is arranged in the inner cavity of the steel column body, and the internal thermal insulation piece completely fills the inner cavity of the steel column body.

[0008] Beneficial effects: the out-of-roof steel column node provided by the utility model, the steel frame beam provides the supporting effect to the steel column body, the building roof has the steel column installation gap reserved for installing the steel column body, the internal heat preservation piece is filled in the steel column body completely, so as to reduce the heat dissipation amount of the air in the internal space of the steel column body, thereby reducing the heat dissipation amount of the heat in the house to the internal space of the steel column body. At the same time, the external thermal insulation layer is wrapped on the outer wall of the steel column body, and the heat dissipation of the steel column body to the external space is blocked. Through the cooperation of the internal heat preservation piece and the external thermal insulation layer, the heat dissipation amount of the heat in the house to the outside of the steel column body can be effectively blocked, the energy dissipation of the out-of-roof steel column node formed by the steel column body and the steel frame beam can be greatly reduced, the thermal bridge effect at the out-of-roof steel column node can be weakened, and the energy consumption level of the whole building can be further reduced.

[0009] In an alternative embodiment, the building roof comprises a roof body, a roof thermal insulation layer and a plane waterproof layer which are sequentially stacked from bottom to top, and the external thermal insulation layer is wrapped with a facade waterproof layer on the outside, and the facade waterproof layer completely covers the external thermal insulation layer.

[0010] Beneficial effects: the building roof has a roof body, a roof thermal insulation layer and a plane waterproof layer arranged from bottom to top, the stability of the temperature in the house is improved by arranging the roof thermal insulation layer, the heat loss caused by the heat exchange of the roof structure with the outside due to high thermal conductivity is reduced, the plane waterproof layer is laid above the roof thermal insulation layer, and the waterproof effect of the roof is improved to prevent water from penetrating into the roof thermal insulation layer or the inside of the roof. The steel column body penetrates through the building roof and is wrapped with the external thermal insulation layer, the external thermal insulation layer is completely covered by arranging the facade waterproof layer, the waterproof performance of the steel column body and the joint between the steel column body and the roof is improved, water is prevented from penetrating into the external thermal insulation layer or the inside of the steel column body, and the integrity of the roof thermal insulation layer is further protected, and the influence of the thermal bridge effect is reduced.

[0011] In an alternative embodiment, the plane waterproof layer and the facade waterproof layer are of an integrated structure.

[0012] Beneficial effects: the plane waterproof layer and the facade waterproof layer are of an integrated structure, the risk of water leakage at the joint between the plane waterproof layer and the facade waterproof layer is avoided, and the waterproof effect of the whole out-of-roof steel column node can be improved.

[0013] In an alternative embodiment, a fixing piece is arranged on the steel column body, the fixing piece penetrates through the external thermal insulation layer, and the facade waterproof layer is fixedly arranged on the fixing piece.

[0014] Beneficial effects: By providing a fixing member on the steel column body, the facade waterproof layer is fixedly connected with the steel column body, and the fixing member penetrates through the external thermal insulation layer, thereby improving the stability of the facade waterproof layer and the external thermal insulation layer on the outer side of the steel column body, and preventing the external thermal insulation layer or the facade waterproof layer from falling off due to vibration or deformation.

[0015] In an alternative embodiment, the fixing member is arranged close to the roof body, the facade waterproof layer is fixedly connected with the fixing member through the penetrating member, and the auxiliary waterproof layer is arranged on the facade waterproof layer corresponding to the penetrating member, so as to completely cover the penetrating member.

[0016] Beneficial effects: The fixing member is arranged close to the roof body to ensure the stability of the facade waterproof layer, the penetrating member is used to connect the fixing member and the facade waterproof layer, the bolt connection is simple and efficient, the stability of the overall structure is enhanced, the auxiliary waterproof layer covers the penetrating member and the surrounding area to form an additional waterproof barrier, thereby ensuring the waterproof performance of the penetrating member and preventing water from penetrating from the bolt connection, and ensuring the overall waterproof performance.

[0017] In an alternative embodiment, the cross-sectional shape of the fixing member perpendicular to the length direction is Z-shaped, and one side of the fixing member close to the facade waterproof layer extends towards the roof body.

[0018] Beneficial effects: The Z-shaped fixing member is matched with the steel column body close to the inner bottom plate, the fixing member bottom plate can be welded and fixed with the steel column body during installation, the connecting plate in the middle of the fixing member is horizontally arranged to support the external thermal insulation layer, thereby reducing the internal stress caused by the self-gravity of the external thermal insulation layer and improving the structural stability of the external thermal insulation layer. The outer top plate of the fixing member is tightly attached to the outer side of the external thermal insulation layer to limit the horizontal position of the external thermal insulation layer, thereby stably fixing the external thermal insulation layer on the outer side of the steel column body. The outer top plate of the fixing member extends downward to avoid water accumulation on the fixing member after water seeps into the thermal insulation layer, thereby ensuring the structural stability of the external thermal insulation layer.

[0019] In an alternative embodiment, the external thermal insulation layer extends along the length direction of the steel column body to a predetermined height, and a waterproof cover plate is arranged on the top of the external thermal insulation layer.

[0020] Beneficial effects: The waterproof cover plate arranged on the top of the external thermal insulation layer prevents water from seeping downward from the top of the external thermal insulation layer and damaging the heat preservation effect of the external thermal insulation layer, thereby improving the waterproof performance of the roof steel column body.

[0021] In an alternative embodiment, the facade waterproof layer is fixedly connected with the waterproof cover plate.

[0022] Beneficial effects: The facade waterproof layer is connected with the waterproof cover plate, thereby preventing water from seeping from the joint between the waterproof cover plate and the facade waterproof layer, and improving the waterproof performance.

[0023] In an alternative embodiment, the top surface of the waterproof cover plate is downwardly inclined towards the vertical waterproof layer.

[0024] Beneficial effects: the top surface of the waterproof cover plate is downwardly inclined towards the vertical waterproof layer, facilitating drainage and preventing water accumulation at the waterproof cover plate, and the waterproof cover plate further enhances the waterproof performance of the fixing member and the bolt connection, avoiding water penetration.

[0025] In a second aspect, the utility model provides a kind of building structure, with out roof steel column node, because building structure includes out roof steel column node, with identical effect with out roof steel column node, not repeated here. BRIEF DESCRIPTION OF DRAWINGS

[0026] In order to more clearly illustrate the specific embodiments of the utility model or the technical solutions in the prior art, the drawings needed in the specific embodiments or prior art description will be briefly introduced as follows: obviously, the drawings in the following description are some embodiments of the utility model, and for those skilled in the art, other drawings can also be obtained without creative labor based on these drawings.

[0027] Figure 1 It is the radial section schematic view of the out roof steel column node of the utility model;

[0028] Figure 2 It is Figure 1 the sectional view of A-A direction;

[0029] Figure 3 It is Figure 1 the sectional view of B-B direction;

[0030] Figure 4 It is Figure 2 the sectional view of C-C direction.

[0031] MARKED WITH REFERENCE NUMBERS:

[0032] 101, steel frame beam; 102, steel column body; 103, external thermal insulation layer; 104, internal thermal insulation member; 201, roof body; 202, roof thermal insulation layer; 203, horizontal waterproof layer; 204, vertical waterproof layer; 301, fixing member; 302, through member; 303, auxiliary waterproof layer; 304, waterproof cover plate; 305, bottom purlin. DETAILED DESCRIPTION

[0033] In order to make the purpose, technical scheme and advantages of the embodiments of the present application clearer, the technical scheme of the embodiments of the present application will be described clearly and completely below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are some of the embodiments of the present application, rather than all the embodiments of the present application. Based on the embodiments of the present application, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the present application.

[0034] In the description of the present application, it should be noted that the orientations or positional relationships indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. are based on the orientations or positional relationships shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and therefore cannot be understood as indicating or implying that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the present application. In addition, the terms "first", "second", "third" are only for the purpose of description, and cannot be understood as indicating or implying relative importance.

[0035] In the description of the present application, it should be noted that unless otherwise explicitly specified and limited, the terms "mounting", "connecting", "connection" should be understood broadly, for example, it can be fixed connection, or detachable connection, or integrally connected; it can be mechanical connection, or electrical connection; it can be directly connected, or indirectly connected through an intermediate medium, or the communication inside two elements. Those skilled in the art can understand the specific meaning of the above terms in the present application according to the specific circumstances.

[0036] In addition, the technical features involved in the different embodiments of the present application described below can be combined with each other as long as there is no conflict.

[0037] In the related art, the roof system of the industrial plant usually uses rock wool board and other thermal insulation materials to reduce heat conduction, but in the industrial plant, due to the penetration of steel columns, pipelines and other components through the roof, the thermal insulation layer is often forced to be interrupted or discontinuous in construction at these nodes. This interruption causes the high-thermal-conductivity metal components to directly communicate with the indoor and outdoor environments, forming a significant thermal bridge effect. The thermal bridge not only causes heat loss, but also increases the overall energy consumption of the building.

[0038] In the engineering practice of industrial plants, the out-of-roof steel column joint is a high-risk area of thermal bridge problems. The existing technology usually uses rock wool strips to fill the gap between the steel column and the roof insulation layer 202 to alleviate the thermal bridge effect. However, due to the high thermal conductivity of the steel column itself, combined with the deformation of the steel column under vibration and temperature change, the filling material is prone to loosen or fall off, which further aggravates the thermal bridge effect. In addition, the waterproof structure at the root of the steel column usually relies on sealant or coiled material closing process, which requires a construction gap, further damaging the integrity of the insulation layer and weakening the insulation effect. The thermal bridge problem of the industrial plant roof is mainly concentrated in the out-of-roof steel column joint. Although the existing technology attempts to alleviate the thermal bridge by filling materials, due to the problems of material loosening, construction gap, etc., the insulation effect is still not ideal.

[0039] The utility model provides a kind of out-of-roof steel column joint to solve the problem of high thermal bridge effect in the out-of-roof steel column joint in prior art.

[0040] The embodiments of the utility model will be described below in conjunction with Figures 1 to 4 , the embodiments of the utility model.

[0041] According to the embodiments of the utility model, on the one hand, an out-of-roof steel column joint is provided, which includes: a steel girder 101 on which a building roof is constructed, and a steel column installation gap is reserved on the building roof; a steel column body 102 is installed in the steel column installation gap, and the steel column body 102 penetrates through the building roof and is supported and installed on the steel girder 101, an external insulation layer 103 is wrapped on the outer side wall of the steel column body 102, the external insulation layer 103 is in abutment with the building roof, an internal insulation piece 104 is arranged in the inner cavity of the steel column body 102, and the internal insulation piece 104 completely fills the inner cavity of the steel column body 102.

[0042] The utility model provides an exit roof steel column node, including steel frame beam 101 and steel column body 102, be provided with building roof above steel frame beam 101, and the bottom of steel column body 102 is connected with the abutment connection above steel frame beam 101, so that steel frame beam 101 forms the support structure to steel column body 102, and the steel column installation gap for installing steel column body 102 is reserved on building roof, the external thermal -insulated layer 103 is set up by being wrapped around outside steel column body 102, has reduced the conduction speed of the steel column body 102 of high heat conductivity of the energy in the house, has also slowed down the heat dissipation speed of steel column body 102 to outside, the external thermal -insulated layer 103 is set up in the installation gap between steel column body 102 and building roof, and the external thermal -insulated layer 103 abuts building roof, avoids the energy in the house from installation gap to dissipate to outside, reduces the influence of the installation gap of building roof for installing steel column body 102 to the heat loss in the house. By filling internal thermal -insulating piece 104 to steel column body 102 completely, the speed of steel column body 102 to the heat dissipation of steel column body 102 inside has reduced. The cooperation setting of external thermal -insulated layer 103 and internal thermal -insulating piece 104 of steel column body 102 reduces the heat dissipation amount of the energy in the house to outside through steel column body 102, simultaneously reduces the thermal bridge effect of exit roof node steel column, reduces the overall energy consumption of building.

[0043] Specifically, the external thermal -insulated layer 103 is 50mm thick hard rock wool, is mechanically fixed to steel column body 102 using self-tapping screw, and the internal thermal -insulating piece 104 is completely filled thick hard rock wool.

[0044] In some embodiments, in combination Figure 1 And Figure 2 As shown, the roof structure is usually supported by steel frame beam 101, further including bottom purlin 305, bottom purlin 305 is fixedly connected with steel frame beam 101 through bolt, and bottom purlin 305 is provided with roof body 201, roof thermal -insulated layer 202 and plane waterproof layer 203 from bottom to top in turn, and facade waterproof layer 204 is wrapped outside external thermal -insulated layer 103, and facade waterproof layer 204 completely covers external thermal -insulated layer 103.

[0045] The building roof has a roof body 201, a roof insulation layer 202 and a plane waterproof layer 203 arranged from bottom to top. By arranging the roof insulation layer 202, the stability of the indoor temperature is improved, and the heat loss caused by the heat exchange of the roof structure with the outside due to high thermal conductivity is reduced. The plane waterproof layer 203 is arranged above the roof insulation layer 202, which is suitable for improving the waterproof effect of the roof and preventing water from penetrating into the roof insulation layer 202 or the inside of the roof. The steel column body 102 penetrates the building roof and is wrapped with an external insulation layer 103. By arranging the facade waterproof layer 204, the external insulation layer 103 is completely covered, the waterproof performance of the steel column body 102 and the joint between the steel column body 102 and the roof is improved, and water is prevented from penetrating into the external insulation layer 103 or the inside of the steel column body 102. At the same time, the integrity of the roof insulation layer 202 is further protected, and the influence of the thermal bridge effect is reduced. In actual construction, the facade waterproof layer 204 extends downward to abut the roof insulation layer 202, so that the facade waterproof layer 204 and the roof insulation layer 202 form an integral insulation structure, preventing the existence of an area between the roof body 201 or the steel column body 102 and the external environment which is not covered by the insulation structure, and avoiding the increase of the overall energy consumption of the building caused by the heat overflow from the gap between the facade waterproof layer 204 and the roof insulation layer 202.

[0046] Specifically, the facade waterproof layer 204 and the plane waterproof layer 203 are 1.5mm thick fabric internally reinforced PVC waterproof rolls, wherein the roll lap joint edge width is not less than 150mm.

[0047] As an implementation form, the plane waterproof layer 203 and the facade waterproof layer 204 are an integral structure, which avoids the risk of water leakage at the joint between the plane waterproof layer 203 and the facade waterproof layer 204, and can enhance the overall waterproof effect of the roof steel column node.

[0048] In some embodiments, in combination Figure 2 As shown, the steel column body 102 is provided with a fixing part 301, the fixing part 301 penetrates the external insulation layer 103, and the facade waterproof layer 204 is fixedly installed on the fixing part 301.

[0049] By arranging the fixing part 301 on the steel column body 102, the facade waterproof layer 204 is rigidly connected with the steel column body 102, the overall rigidity of the steel column body 102 is improved, and the external insulation layer 103 is further reinforced by penetrating the external insulation layer 103, thereby preventing the external insulation layer 103 from falling due to vibration or deformation.

[0050] Further, the fixing member 301 is arranged close to the roof body 201, the facade waterproof layer 204 is fixed with the fixing member 301 through the penetrating member 302, the waterproof layer is provided with the auxiliary waterproof layer 303 at the corresponding position of the penetrating member 302, and the auxiliary waterproof layer 303 completely covers the penetrating member 302. The fixing member 301 is arranged close to the roof body 201, so that the position of the fixing member 301 is arranged as low as possible, and the bottom of the facade waterproof layer 204 is prevented from being turned outward to cause the outside water to enter the inside waterproof layer and affect the normal heat preservation effect of the external thermal insulation layer 103. The auxiliary waterproof layer 303 covers the penetrating member 302 and the surrounding area, and waterproof treatment is performed on the installation position of the fixing member 301. When the roof is waterlogged, water will gather upward from the roof, and when the water level rises to the installation position of the fixing member 301, the water is easy to penetrate into the external thermal insulation layer 103 from the gap around the fixing member 301, affecting the heat preservation effect of the external thermal insulation layer 103. By covering the installation position of the fixing member 301 with the auxiliary waterproof layer 303, the penetration of water from the fixing member 301 to the external thermal insulation layer 103 can be effectively avoided, the overall waterproof effect of the node is improved, and the overall heat preservation effect of the node body is ensured not to be damaged by external water.

[0051] Further, the cross section shape of the fixing member 301 perpendicular to the length direction is Z-shaped, one side of the fixing member 301 close to the facade waterproof layer 204 extends and is arranged toward the roof body 201, the Z-shaped cross section design provides better structural strength and stability, and the one side of the fixing member 301 close to the facade waterproof layer 204 extends toward the roof body 201, ensuring the stability of the facade waterproof layer 204.

[0052] Specifically, the fixing member 301 is a Z-shaped purlin, the fixing member 301 close to the inner side of the bottom plate is matched with the steel column body 102, the fixing member 301 can be welded and fixed with the steel column body 102 during installation, the connecting plate in the middle of the fixing member 301 is horizontally arranged, can support the external thermal insulation layer 103, can reduce the internal stress caused by the self-gravity of the external thermal insulation layer 103, and improve the structural stability of the external thermal insulation layer 103. The top plate of the fixing member 301 arranged outward is tightly attached to the outer side of the external thermal insulation layer 103, so as to limit the horizontal position of the external thermal insulation layer 103 and stably fix the external thermal insulation layer 103 on the outer side of the steel column body 102. The top plate of the fixing member 301 extends downward, can prevent water from accumulating on the fixing member 301 after the water in the thermal insulation layer, and ensure the structural stability of the external thermal insulation layer 103.

[0053] In some embodiments, the fixing member 301 is arranged close to the roof body 201, the facade waterproof layer 204 is fixed with the fixing member 301 through the penetrating member 302, the waterproof layer is provided with the auxiliary waterproof layer 303 at the corresponding position of the penetrating member 302, and the auxiliary waterproof layer 303 completely covers the penetrating member 302. Figure 2As shown, the external thermal insulation layer 103 extends along the length of the steel column body 102 to a predetermined height, and a waterproof cover plate 304 is arranged at the top of the external thermal insulation layer 103 to prevent water from seeping down from the top of the external thermal insulation layer 103 and damaging the thermal insulation effect of the external thermal insulation layer 103, thereby improving the waterproof performance of the roof steel column body 102.

[0054] Further, the facade waterproof layer 204 is fixedly connected with the waterproof cover plate 304, and the facade waterproof layer 204 is connected with the waterproof cover plate 304 to avoid water seepage from the joint between the waterproof cover plate 304 and the facade waterproof layer 204, thereby improving the waterproof performance.

[0055] Further, the top surface of the waterproof cover plate 304 is inclined downward towards the facade waterproof layer 204, which facilitates drainage and prevents water accumulation at the waterproof cover plate 304, and the waterproof cover plate 304 further enhances the waterproof performance of the fixed part 301 and the bolt connection, thereby avoiding water seepage.

[0056] Specifically, the waterproof cover plate 304 is a 0.8mm thick galvanized profiled steel plate, and the waterproof cover plate 304 is arranged at the top and side edges of the facade waterproof layer 204, wherein the facade waterproof layer 204 is fixed to the side edges of the waterproof cover plate 304 by special fixing sleeve nails and pressing strips.

[0057] The roof steel column joint provided in the embodiment is commonly installed in an industrial plant, and the main structure of the industrial plant is a portal steel frame. Taking the portal steel frame structure in the industrial plant as an example, the roof steel column joint provided in the embodiment is explained and described. In the portal steel frame structure, the cross-sectional size of the steel frame beam 101 is H800x250x6x12mm, and the material is Q355B. The roof of the industrial plant is sequentially arranged from top to bottom as follows:

[0058] The planar waterproof layer 203 is specifically a 1.5mm thick fabric internally reinforced PVC waterproof roll material, and the facade waterproof layer 204 is fixed to the waterproof cover plate 304 by special fixing sleeve nails and pressing strips, and the lap joint width of the roll material is not less than 150mm. The facade waterproof layer 204 on the outer side of the steel column body 102 is an integral structure with the planar waterproof layer 203, and therefore the facade waterproof layer 204 and the planar waterproof layer 203 are selected to have the same material and installation method.

[0059] The roof insulation layer 202 is specifically a 100mm thick high-strength rock wool board insulation layer, wherein the rock wool bulk density is ≥180kg / m3, and the thermal conductivity is ≤0.040W / (m·k). The roof insulation layer 202 is arranged in two layers, and the roof insulation layer 202 is mechanically fixed to the profiled steel plate as the roof body 201 by self-tapping screws, and the self-tapping screws extend into the profiled steel plate by not less than 25mm, and at least two self-tapping screws are used to fix each rock wool board.

[0060] 0.3mm thick PE film vapor barrier, set below the roof insulation layer 202, using tape to bond two PE film;

[0061] Roof body 201, select 0.8mm thick galvanized profiled steel sheet, set below the roof insulation layer 202, galvanized profiled steel sheet is not less than 275g / m2, yield strength ≥ 320MPa, profiled steel sheet type selection YX-51-240-720, profiled steel sheet at the trough with the bottom purlin 305 fixed by self tapping screw.

[0062] Bottom purlin 305, specifically cold-rolled high-strength hot-dip galvanized steel purlin, specifications for XZ220x75x20x2.5mm, material for Q355B, bottom purlin 305 is arranged perpendicular to the steel beam 101 span direction, fixed on the steel beam 101 by purlin plate.

[0063] As the steel column body 102, the out-of-roof steel column is vertically located on the steel beam 101, and the out-of-roof steel column is welded and fixed with the steel beam 101. The size of the out-of-roof steel column is 200x200x10mm, and the material is Q355B. The inside of the out-of-roof steel column is filled with rock wool as the internal insulation part 104. The top of the rock wool as the internal insulation part 104 needs to be 350mm higher than the roof, and 50mm thick hard rock wool is arranged within the range of 300mm height higher than the roof around the out-of-roof steel column, so as to ensure the insulation performance of the out-of-roof steel column node.

[0064] The roof PVC waterproof roll needs to be turned up by 300mm at the out-of-roof steel column to form the vertical plane waterproof layer 204, so as to enhance the overall waterproof integrity and prevent rainwater penetration. A circle of waterproof cover plate 304 is welded at the position of 300mm higher than the roof outside the out-of-roof steel column, the waterproof cover plate 304 has a drainage slope of 5% outward, and the horizontal length is 80mm. A 50mm wide vertical plate is welded at the position 50mm away from the outside of the steel column body 102 below the waterproof cover plate 304, and the waterproof cover plate 304 is made of 8mm thick galvanized steel plate. A Z-shaped purlin as a fixing part 301 is arranged at the bottom of the shadow angle formed by the out-of-roof steel column and the roof, the Z-shaped purlin has a specification of Z50x50x3mm, is arranged along the outer periphery of the steel column, and the groove formed by the Z-shaped purlin and the steel column body 102 is arranged downward. The turned-up PVC waterproof roll as the vertical plane waterproof layer 204 is fixed on the flange plate of the Z-shaped purlin by using self tapping screw as the penetrating part 302, and then the auxiliary waterproof layer 303 is arranged to cover the self tapping screw as the penetrating part 302; the special fixing sleeve nail is used to fix the vertical plate below the waterproof cover plate 304 at the top of the waterproof cover plate 304, and the sealing glue is used to seal the gap between the vertical plane waterproof layer 204 and the waterproof cover plate 304 and the sleeve nail.

[0065] According to the embodiment of the utility model, on the other hand, a kind of building structure is also provided, including out roof steel column node, this building structure by being provided with out roof steel column node, as far as possible the influence of heat bridge effect to out roof steel column body 102 is reduced, reduce the overall energy consumption of building, realize efficient and green development.

[0066] Obviously, the above embodiments are only examples for clearly illustrating, and not limit the embodiments. Although the embodiments of the utility model are described in conjunction with the drawings, those skilled in the art can make various modifications and variations without departing from the spirit and scope of the utility model, and such modifications and variations all fall within the scope defined by the utility model.

Claims

1. A roof-mounted steel column joint, characterized in that, include: A steel frame beam (101) on which a building roof is constructed, and a gap for installing steel columns is reserved on the building roof; A steel column body (102) is installed in the steel column installation gap, and the steel column body (102) penetrates the building roof and is supported on the steel frame beam (101). An external insulation layer (103) is wrapped on the outer wall of the steel column body (102), and the external insulation layer (103) abuts against the building roof. An internal insulation component (104) is provided in the inner cavity of the steel column body (102), and the internal insulation component (104) completely fills the inner cavity of the steel column body (102).

2. The roof-exit steel column joint according to claim 1, characterized in that, The building roof includes a roof body (201), a roof insulation layer (202), and a planar waterproof layer (203) stacked sequentially from bottom to top. The outer insulation layer (103) is wrapped with a vertical waterproof layer (204), which completely covers the outer insulation layer (103).

3. The roof-exit steel column joint according to claim 2, characterized in that, The planar waterproof layer (203) and the vertical waterproof layer (204) are an integral structure.

4. The roof-exit steel column joint according to claim 2 or 3, characterized in that, A fastener (301) is installed on the steel column body (102). The fastener (301) penetrates the external insulation layer (103). The facade waterproof layer (204) is fixedly installed on the fastener (301).

5. The roof-exit steel column joint according to claim 4, characterized in that, The fastener (301) is arranged close to the roof body (201). The facade waterproof layer (204) and the fastener (301) are sequentially fixed through the penetrating member (302). An auxiliary waterproof layer (303) is provided at the corresponding position of the waterproof layer and the penetrating member (302), and the auxiliary waterproof layer (303) completely covers the penetrating member (302).

6. The roof-exit steel column joint according to claim 4, characterized in that, The fastener (301) has a Z-shaped cross-section perpendicular to its length, and the fastener (301) extends toward the roof body (201) on the side closest to the facade waterproof layer (204).

7. The roof-exit steel column joint according to claim 2 or 3, characterized in that, The external insulation layer (103) extends to a predetermined height along the length of the steel column body (102), and a waterproof cover plate (304) is arranged on the top of the external insulation layer (103).

8. The roof-exit steel column joint according to claim 7, characterized in that, The facade waterproof layer (204) is fixedly fitted with the waterproof cover plate (304).

9. The roof-exit steel column joint according to claim 7, characterized in that, The top surface of the waterproof cover plate (304) is inclined downward toward the vertical waterproof layer (204).

10. A building structure, characterized in that, It has a roof-mounted steel column node as described in any one of claims 1 to 9.

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