A steel structure for adding a floor to a factory building

Abstract

The utility model relates to the field of building engineering, concretely relates to a steel structure for plant roof top storey addition, it includes: support frame, truss and roof, support frame is constituted grid frame by array steel column and cross main beam, forms rigid bearing system of long side frame beam, wide side frame beam and center beam. Truss is straddled between long side frame beam and center beam, adopts the triangle web member structure of 10-30 DEG of upper chord bar inclination, realizes stress release through hinged joint connection main beam. Roof system contains waterproof layer, thermal insulation layer and roof panel, is fixed in truss through purlin. Sets up inclined strut and forms the drainage slope of middle high four all around low, realizes efficient drainage with annular stainless steel gutter and downspout system. The structure reduces the storey addition dead weight through the synergistic effect of lightweight truss and grid main beam, reduces the plant reinforcement material requirement, saves the conversion cost.

Description

Technical Field

[0001] This utility model relates to the field of building engineering, specifically to a steel structure for adding floors to the roof of a factory building. Background Technology

[0002] In recent years, with the shortage of industrial land and the demand for capacity upgrades from enterprises, a large number of old factories are facing the problem of space expansion. Traditional factory renovations often use concrete structures or conventional steel frames. Concrete additions are heavy and require large-scale reinforcement of the original factory structure, which is time-consuming and costly. While conventional steel frames are lighter, the main and secondary beams are densely arranged, the joint welding is complex, the on-site construction efficiency is low, and they are prone to causing concentrated load hazards to the original floor slab.

[0003] Therefore, there is an urgent need for a new type of steel structure for adding floors to factory rooftops to solve the above problems. Utility Model Content

[0004] (a) Technical problems to be solved In view of the above-mentioned shortcomings and deficiencies of the prior art, this utility model provides a steel structure for adding floors to the roof of a factory building, so as to solve the problems of heavy self-weight, long construction period and poor economy of existing concrete additions or dense steel frames, and low construction efficiency of conventional steel frame structures.

[0005] (II) Technical Solution To achieve the above objectives, this utility model provides a steel structure for adding a floor to the roof of a factory building, comprising: a supporting frame, a truss, and a roof. The supporting frame includes several steel columns and multiple main beams arranged along the length and width of the floor slab; the steel columns are evenly distributed in an array on the floor slab; the main beams are spliced ​​to form a frame structure composed of multiple rectangular units and connected to the top of the steel columns; the long side of the supporting frame forms a long side beam, the wide side forms a wide side beam, and the main beam arranged along the length and located at the center forms a central beam. Multiple parallel trusses are spanned between the long side beam and the central beam. Each truss is arranged along the width direction, and the multiple trusses are spaced apart along the length direction. Each truss includes an upper chord, a lower chord, and multiple triangular web members connecting the upper and lower chords. The two ends of the truss are connected to the main beam through hinged joints. The lower chord is horizontally arranged, and the upper chord is inclined upward from the long side beam toward the central beam at an angle of 10-30 degrees to the horizontal. One corner of the triangular web member is fixed to the lower chord, and the opposite side of the triangular web member is fixed to the upper chord. The roof covers the top chord of the truss.

[0006] Preferably, the triangular web member includes a diagonal web member and a vertical web member. The first end of the diagonal web member and the first end of the vertical web member are fixed to a first fixing plate on the lower chord. The second end of the diagonal web member is fixed to a second fixing plate on the upper chord. The second end of the vertical web member is fixed to a third fixing plate on the upper chord. The first fixing plate, the second fixing plate, and the third fixing plate constitute the three vertices of the triangular web member. The diagonal web member, the vertical web member, and the portion of the web member between the second and third fixing plates of the diagonal web member constitute the three sides of the triangular web member.

[0007] Preferably, in the plurality of triangular web members, every two adjacent triangular web members share a vertical web member, and two diagonal web members are located on both sides of the shared vertical web member, so as to divide the plurality of triangular web members into a plurality of triangular web member groups consisting of a vertical web member and two diagonal web members.

[0008] Preferably, two adjacent triangular web members share a second fixing plate.

[0009] Preferably, the truss further includes several purlins, which are spaced apart on the upper chord of the truss, and the length direction of the purlins is parallel to the main beam.

[0010] Preferably, the roof is fixed to the purlin.

[0011] Preferably, along the length direction, the two trusses located at the ends are respectively a predetermined distance from the corresponding side beam of the supporting frame; the steel structure for adding floors to the factory roof also includes four diagonal braces, one end of each diagonal brace is located at the four corners of the entire supporting frame, and the other end is respectively hinged to the top of the upper chord of the adjacent truss located at the ends, so that the upper chord of the truss forms a roof structure that is inclined from the center to the four corners.

[0012] Preferably, the roof includes a waterproof layer, an insulation layer, and a roof panel; the waterproof layer is laid on top of the purlins, the insulation layer is laid on top of the waterproof layer, and the roof panel is laid on top of the insulation layer.

[0013] Preferably, it also includes stainless steel gutters and downpipes; the stainless steel gutters are arranged in a continuous ring along the edge of the roof, and reserved interfaces matching the downpipes are provided at intervals along the length of the stainless steel gutters, with the top of the downpipes connected to the reserved interfaces.

[0014] (III) Beneficial Effects This utility model reduces the self-weight of the added floors by using a lightweight truss structure and a grid layout of main and secondary beams, thereby reducing the need for reinforcement materials in the factory building and saving on renovation costs. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of a steel structure support frame for adding a floor to the roof of a factory building according to the present invention; Figure 2 This is a schematic diagram of a truss for adding a floor to the roof of a factory building according to the present invention; Figure 3 This is a schematic diagram of the installation of a truss for adding a floor to the roof of a factory building according to this utility model; Figure 4 This is a top view schematic diagram of a steel structure for adding a floor to the roof of a factory building according to the present invention.

[0016] [Explanation of Labels in the Attached Image] 1: Steel column; 2: Long side beam; 3: Wide side beam; 4: Central beam; 5: Top chord; 6: Lower chord; 7: Vertical web member; 8: Diagonal web member; 9: Purlin; 10: First fixing plate; 11: Second fixing plate; 12: Third fixing plate; 13: Stainless steel gutter; 14: Downpipe; 15: Roof; 16: Diagonal brace; 100: Truss. Detailed Implementation

[0017] To better explain and facilitate understanding of this utility model, the present utility model will be described in detail below with reference to the accompanying drawings and specific embodiments.

[0018] It should be noted that all directional indicators (such as up, down, left, right, front, back, etc.) in this utility model embodiment are only used to explain the relative positional relationship and movement of each component in a certain specific posture (as shown in the figure). If the specific posture changes, the directional indicator will also change accordingly.

[0019] Furthermore, in this utility model, the use of terms such as "first," "second," etc., is for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this utility model, "multiple" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0020] In this utility model, unless otherwise explicitly specified and limited, the terms "connection," "fixing," etc., should be interpreted broadly. For example, "fixing" can mean a fixed connection, a detachable connection, or an integral part; "connection" can mean a mechanical connection or an electrical connection; it can mean a direct connection or an indirect connection through an intermediate medium; it can mean the internal communication of two components or the interaction between two components, unless otherwise explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0021] See Figures 1 to 4 The present invention provides a steel structure for adding a floor to the roof of a factory building, comprising: a support frame, a truss 100, and a roof 15; The supporting frame includes several steel columns 1 and multiple main beams arranged along the length and width of the floor slab; the steel columns 1 are evenly distributed in an array on the floor slab; the main beams are spliced ​​to form a frame structure composed of multiple rectangular units and connected to the top of the steel columns 1; the long side of the supporting frame forms a long side beam 2, the wide side forms a wide side beam 3, and the main beam arranged along the length and located at the center forms a central beam 4. Multiple parallel trusses 100 are spanned between the long side beam 2 and the central beam 4. Each truss 100 is arranged along the width direction, and the multiple trusses 100 are spaced apart along the length direction. Each truss 100 includes an upper chord 5, a lower chord 6, and multiple triangular web members connecting the upper chord 5 and the lower chord 6. The two ends of the truss 100 are connected to the main beam through hinged joints. The lower chord 6 is horizontally arranged, and the upper chord 5 is inclined upward from the long side beam 2 towards the central beam 4 at an angle of 10-30 degrees to the horizontal direction. One corner of the triangular web member is fixed to the lower chord 6, and the opposite side of the triangular web member is fixed to the upper chord 5. The roof 15 covers the upper chord 5 of the truss 100.

[0022] The steel columns 1 are vertically fixed to the original floor slab in an array to form the main vertical load-bearing structure; the top is formed by the intersection of longitudinal and transverse main beams to form a grid frame, with long frame beams 2 at the longitudinal edge and wide frame beams 3 at the transverse edge, and two central beams 4 added in the longitudinal middle to form a symmetrical rigid plane to distribute the load to the steel columns 1.

[0023] Multiple parallel trusses 100 are horizontally erected between the long side beam 2 and the central beam 4. Each truss consists of an inclined upper chord 5, a horizontal lower chord 6, and a triangular web member. One end of the web member is fixed to the lower chord 6, and the opposite side is connected to the upper chord 5, converting the roof load 15 into axial force and transferring it to the main beam. Both ends are connected to the main beam through hinged joints to reduce structural stress.

[0024] During installation, first position the steel column 1 and fix it to the floor slab. After hoisting the main beam to form a frame, assemble the truss 100 in sections. Use hinged joints for installation and set up temporary supports. Finally, lay the roof 15.

[0025] In a preferred embodiment, auxiliary beams (not shown) may be arranged between the main beams to further connect the main beams and enhance the overall rigidity of the frame.

[0026] Preferably, the triangular web member includes a diagonal web member 8 and a vertical web member 7. The first end of the diagonal web member 8 and the first end of the vertical web member 7 are fixed to a first fixing plate 10 on the lower chord 6. The second end of the diagonal web member 8 is fixed to a second fixing plate 11 on the upper chord 5. The second end of the vertical web member 7 is fixed to a third fixing plate 12 on the upper chord 5. The first fixing plate 10, the second fixing plate 11, and the third fixing plate 12 constitute the three vertices of the triangular web member. The diagonal web member 8, the vertical web member 7, and the portion of the web member between the second fixing plate 11 and the third fixing plate 12 of the diagonal web member 8 constitute the three sides of the triangular web member.

[0027] Preferably, in the plurality of triangular web members, every two adjacent triangular web members share a vertical web member 7, and two diagonal web members 8 are located on both sides of the shared vertical web member 7, so as to divide the plurality of triangular web members into a plurality of triangular web member groups composed of a vertical web member 7 and two diagonal web members 8.

[0028] Preferably, two adjacent triangular web members share a second fixing plate 11.

[0029] The diagonal web member 8 bears the vertical load transmitted from the roof 15 and converts it into diagonal pressure. The vertical web member 7 bears the local bending moment and constrains the lateral displacement of the upper chord member 5. The upper chord member 5 segment between the second fixed plate 11 and the third fixed plate 12 serves as the base of a triangle, uniformly transmitting the load to the adjacent web members, forming a closed triangular force unit.

[0030] Preferably, the truss 100 further includes several purlins 9, which are spaced apart on the upper chord 5 of the truss 100, and the length direction of the purlins 9 is parallel to the main beam.

[0031] Preferably, the roof 15 is fixed to the purlin 9.

[0032] The purlins 9 are fixed to the pre-set positioning holes of the upper chord 5 by bolts or clips, and their spacing is adjusted according to the material stiffness of the roof 15. The roof 15 is fixed to the upper surface of the purlins 9 by self-tapping screws or clamps. The load is transferred from the roof 15 to the purlins 9, and then evenly distributed to the entire truss 100 through the connection point between the purlins 9 and the upper chord 5, and finally transferred to the main beam and steel column 1 through the triangular web members.

[0033] Preferably, it also includes four diagonal braces 16, one end of each diagonal brace 16 is located at the four corners of the support frame, and the other end is respectively hinged to the top of the upper chord 5 of the adjacent truss 100, so that the upper chord 5 of the truss 100 forms a roof 15 structure that slopes from the center to the four corners.

[0034] The diagonal bracing 16 forms a spatial X-shaped tensioning system, creating a sloping roof 15 that is high in the middle and low around the edges, thus achieving centralized drainage guidance.

[0035] Preferably, the roof 15 includes a waterproof layer, an insulation layer, and a roof panel; the waterproof layer is laid on top of the purlins 9, the insulation layer is laid on top of the waterproof layer, and the roof panel is laid on top of the insulation layer.

[0036] The waterproof layer (such as PVC roll or TPO film) is directly laid on the upper surface of the purlin 9, and naturally adheres to the crests and troughs formed by the spacing of the purlin 9. The insulation layer (rock wool board or polyurethane foam board) is laid on top of the waterproof layer and fixed to the waterproof layer to form a continuous heat insulation barrier. The roof panel (corrugated steel sheet or aluminum-magnesium-manganese alloy sheet) is covered on the insulation layer and fixed to the purlin 9 to form an exposed protective surface layer.

[0037] Preferably, it also includes a stainless steel gutter 13 and a downpipe 14; the stainless steel gutter 13 is arranged in a continuous ring along the edge of the roof 15, and reserved interfaces matching the downpipe 14 are provided at intervals along the length direction of the stainless steel gutter 13, and the top of the downpipe 14 is connected to the reserved interface.

[0038] Rainwater from the roof 15 is guided through the inclined upper chord 5 into the stainless steel gutter 13, and then collects along the slope to the reserved interface. The top of the downpipe 14 is connected to the reserved interface, and the bottom extends vertically along the outside of the steel column 1 to the ground drainage system. It is fixed to the steel column 1 by pipe clamps. The stainless steel gutter 13 and the downpipe 14 form a closed drainage path. Rainwater is discharged in three stages: roof 15 → stainless steel gutter 13 → downpipe 14, to avoid water accumulation and leakage.

[0039] It should be understood that the above description of the specific embodiments of this utility model is only for illustrating the technical route and features of this utility model, and its purpose is to enable those skilled in the art to understand the content of this utility model and implement it accordingly. However, this utility model is not limited to the specific embodiments described above. All changes or modifications made within the scope of the claims of this utility model should be covered by the protection scope of this utility model.

Claims

1. A steel structure for adding a floor to the roof of a factory building, characterized in that, include: Supporting frame, trusses, and roof; The supporting frame includes several steel columns and multiple main beams arranged along the length and width of the floor slab; the steel columns are evenly distributed in an array on the floor slab; the main beams are spliced ​​to form a frame structure composed of multiple rectangular units and connected to the top of the steel columns; the long side of the supporting frame forms a long side beam, the wide side forms a wide side beam, and the main beam arranged along the length and located at the center forms a central beam. Multiple parallel trusses are spanned between the long side beam and the central beam. Each truss is arranged along the width direction, and the multiple trusses are spaced apart along the length direction. Each truss includes an upper chord, a lower chord, and multiple triangular web members connecting the upper and lower chords. The two ends of the truss are connected to the main beam through hinged joints. The lower chord is horizontally arranged, and the upper chord is inclined upward from the long side beam toward the central beam at an angle of 10-30 degrees to the horizontal. One corner of the triangular web member is fixed to the lower chord, and the opposite side of the triangular web member is fixed to the upper chord. The roof covers the top chord of the truss.

2. The steel structure for adding a floor to the roof of a factory building as described in claim 1, characterized in that, The triangular web member includes a diagonal web member and a vertical web member. The first end of the diagonal web member and the first end of the vertical web member are fixed to a first fixing plate on the lower chord. The second end of the diagonal web member is fixed to a second fixing plate on the upper chord. The second end of the vertical web member is fixed to a third fixing plate on the upper chord. The first fixing plate, the second fixing plate, and the third fixing plate constitute the three vertices of the triangular web member. The diagonal web member, the vertical web member, and the portion of the web member between the second and third fixing plates of the diagonal web member constitute the three sides of the triangular web member.

3. A steel structure for adding a floor to a factory building roof as described in claim 2, characterized in that, In a plurality of triangular web members, every two adjacent triangular web members share a vertical web member, and two diagonal web members are located on both sides of the shared vertical web member, so as to divide the plurality of triangular web members into a plurality of triangular web member groups consisting of a vertical web member and two diagonal web members.

4. A steel structure for adding a floor to the roof of a factory building as described in claim 3, characterized in that, Two adjacent triangular web members share a second fixing plate.

5. A steel structure for adding a floor to the roof of a factory building as described in claim 1, characterized in that, The truss also includes several purlins, which are spaced apart on the upper chord of the truss, with the length direction of the purlins parallel to the main beam.

6. A steel structure for adding a floor to the roof of a factory building as described in claim 5, characterized in that, The roof is fixed to the purlins.

7. A steel structure for adding a floor to a factory building roof as described in claim 1, characterized in that, Along the length direction, the two trusses located at the ends are respectively a predetermined distance from the corresponding side beam of the supporting frame; the steel structure for adding floors to the factory roof also includes four diagonal braces, one end of each diagonal brace is located at the four corners of the entire supporting frame, and the other end is respectively hinged to the top of the upper chord of the adjacent truss located at the ends, so that the upper chord of the truss forms a roof structure that is inclined from the center to the four corners.

8. A steel structure for adding a floor to the roof of a factory building as described in claim 1, characterized in that, The roof includes a waterproof layer, an insulation layer, and roof panels; the waterproof layer is laid on top of the purlins, the insulation layer is laid on top of the waterproof layer, and the roof panels are laid on top of the insulation layer.

9. A steel structure for adding a floor to the roof of a factory building as described in any one of claims 1-8, characterized in that, It also includes stainless steel gutters and downpipes; the stainless steel gutters are arranged in a continuous ring along the edge of the roof, and reserved interfaces matching the downpipes are provided at intervals along the length of the stainless steel gutters, with the top of the downpipes connected to the reserved interfaces.

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