Chord member reinforcing structure in steel structure roof maintenance
By wrapping stiffening rings and double-wrap angle steel around the steel truss members at the dismantling location, the problem of strengthening the structure around the dismantling location of the steel roof was solved, thus ensuring the structural safety and stability during the dismantling of the steel truss.
Patent Information
- Application Number
- CN202422649631.8
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-10-31
- Publication Date
- 2025-10-17
- Estimated Expiration
- 2034-10-31
AI Technical Summary
When dismantling part of the steel truss on the roof of a steel structure factory building, the surrounding structure at the dismantling location needs to be reinforced to prevent safety hazards, but existing technology lacks effective reinforcement methods.
Stiffening rings are installed on the outer walls of the steel truss members around the location to be demolished, and double-wrap angle steel is installed on the outside of the stiffening rings. A square cross section is formed by welding to enhance the structural stability. The stiffening plates and double-wrap angle steel are used to form a whole for bearing the load.
The steel trusses around the demolition site were effectively reinforced, ensuring the safety and stability of the structure and avoiding safety hazards caused by the demolition.
Smart Images
Figure CN223446698U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model belongs to the field of steel structure building, relate to a kind of steel structure factory's dismounting maintenance method, especially, a kind of chord strengthening structure in steel structure roof maintenance. BACKGROUND
[0002] The plant of steel structure building is the common building structure in industrial building, many large-scale warehouse, production base, power plant adopt steel structure building, and steel structure building interior space span is large, space utilization is good, and can be on-site quickly built, dismounting maintenance, mode is flexible.The roof of large-span steel structure building plant is built using steel truss, then purlin is laid on the top of steel truss, and roof panel is laid on purlin.In some extreme cases, for example, large equipment cannot enter and exit from the plant gate but needs to be hoisted from the roof, etc., the roof of steel structure building plant needs to be partially removed, to leave hoisting space, when part of the roof steel truss is removed, the periphery of the removal position needs to bear greater load, which produces safety hazard, therefore, the periphery of the removal position of steel truss needs to be structurally strengthened to ensure the safety of the overall structure.Currently, the steel truss of steel structure roof is rarely partially removed, so it is difficult to find suitable strengthening means in the prior art. SUMMARY
[0003] The utility model discloses a chord strengthening structure in steel structure roof maintenance, which solves the problem of structural strengthening of the periphery of the removal position when part of the roof steel truss is removed.
[0004] The utility model discloses a chord strengthening structure in steel structure roof maintenance, which solves the problem of structural strengthening of the periphery of the removal position when part of the roof steel truss is removed.
[0005] The structure is reinforced before the roof steel truss is demolished, the demolition position and range of the roof are determined, if the beam at both ends of the demolition position extends to the roof ridge, only the other two sides need to be reinforced, if the hole-shaped demolition is carried out in the middle of the roof, the four sides need to be reinforced, the reinforcing range is determined through calculation, and the rod number needing to be reinforced is marked, the stiffener with the same inner diameter as the outer diameter of the rod is selected, is tightly attached to the outer side of the rod, and the butt joint side of the stiffener is welded, the stiffeners are arranged along the axial direction of the rod in sequence and at intervals, and then the double V-shaped angle steels are used to wrap and strengthen the outer side of the stiffeners, the double V-shaped angle steels are diagonally welded to form a square section, and the inner walls of the double V-shaped angle steels abut against the outer walls of the stiffeners, so that the double V-shaped angle steels and the rod form a force integral whole.
[0006] As preferred, the stiffener ring comprises two half-circular tubular stiffeners, the two stiffeners are attached to the outer wall of the rod from two sides, and the two butt joint sides of the two stiffeners are welded to each other.
[0007] As preferred, the inner wall of the stiffener abuts against the outer wall of the rod.
[0008] As preferred, the inner wall of each side surface of the angle steel abuts against the outer wall of the stiffener ring.
[0009] As preferred, the stiffener rings are arranged at intervals along the extension direction of the rod.
[0010] As preferred, the end of each rod of the steel truss is connected through a net rack ball, and the end of the double V-shaped angle steel abuts against the surface of the net rack ball and is welded at the abutting point.
[0011] The utility model discloses a kind of steel truss rod reinforcing structures, when part of roof steel truss is demolished, the rod of steel truss in the demolition position periphery is reinforced, to ensure the safety of structure. BRIEF DESCRIPTION OF DRAWINGS
[0012] The utility model will be further described below with reference to the drawings.
[0013] Figure 1 It is a kind of steel truss rod reinforcing structure of the utility model.
[0014] Figure 2 It is a kind of Figure 1 It is the section view of rod reinforcing position.
[0015] Figure 3 It is a kind of roof demolition position and to be reinforced position schematic view.
[0016] Figure 4 It is a kind of roof layer structure structure diagram.
[0017] In the figure: 1, the lower chord, 2, the web, 3, the net rack ball, 4, the stiffening ring, 5, the angle steel, 6, the welding point, 7, the demolition position, 8, the position to be strengthened, 9, the roof, 10, the steel truss, 11, the purlin, 12, the roof panel. DETAILED DESCRIPTION
[0018] The utility model is further described below through specific embodiments and in conjunction with the drawings.
[0019] Embodiment: a chord strengthening structure in the maintenance of a steel structure roof. The roof structure is as shown in Figure 3 , 4 , and the roof 9 includes the steel truss 10, the purlin 11, and the roof panel 12 from bottom to top in sequence. The roof 1 is partially demolished in the middle, and the 1-3 layers of steel truss around the roof demolition position 7 are the positions to be strengthened 8.
[0020] As shown in Figure 1 , 2 , the members of the steel truss 10 include the upper chord (not shown in the figure), the lower chord 1, and the web 2. The strengthening structure of the lower chord is described in the figure, and the web and the upper chord also need to be strengthened and the strengthening structure is the same as that of the lower chord. As shown in Figure 2 , the lower chord 1 is wrapped with the stiffening ring 4, and the double wrapped angle steel for strengthening is arranged outside the stiffening ring 4. The double wrapped angle steel includes two pieces of angle steel 5, the inner walls of the two pieces of angle steel 5 are attached to the outer wall 4 of the stiffening ring, and the inner walls of the two sides of the angle steel are tightly attached to the outer wall of the stiffening ring. The two pieces of angle steel are arranged at opposite angles, and the two side edges are abutted against each other. The side edges of the two pieces of angle steel 5 are mutually welded and fixed to form a square cross section, and the welding points 6 are as shown in Figure 2 ,
[0021] The stiffening ring 4 includes two pieces of semicircular tubular stiffening pieces, and the two pieces of stiffening pieces are wrapped on the outer wall of the lower chord 1 from the two sides. The two side edges of the two pieces of stiffening pieces are mutually welded at the abutting position, the inner wall of the stiffening piece is tightly attached to the outer wall of the lower chord 1, and the welding points 6 are as shown in Figure 2 .
[0022] As shown in Figure 1 , the stiffening ring 4 is arranged at intervals along the extension direction of the lower chord 1. The end portions of the members of the steel truss 10 are connected through the net rack ball 3, and the end portions of the double wrapped angle steel abut against the surface of the net rack ball 3 and are welded at the abutting position.
Claims
1. A chord reinforcement structure for steel structure roof maintenance, wherein the roof comprises steel trusses, purlins, and roof panels from bottom to top, wherein the members of the steel trusses comprise upper chords, lower chords, and web members, and wherein: The middle of the roof is partially demolished, and the 1-3 layers of steel trusses around the roof demolition position are the positions to be reinforced. The outer walls of the steel trusses at the positions to be reinforced are wrapped with stiffening rings, and double-wrapped angle steels for reinforcement are arranged on the outside of the stiffening rings. The double-wrapped angle steels include two pieces of angle steels, and the inner side walls of the two pieces of angle steels are abutted against the outer wall of the stiffening rings. The two pieces of angle steels are diagonally arranged, and the two side edges are respectively abutted against each other. The abutting sides of the two pieces of angle steels are welded and fixed to each other to form a square cross-section.
2. The chord reinforcement structure for steel structure roof maintenance according to claim 1, characterized in that: The reinforcing ring comprises two semi-circular tubular reinforcing plates, which are respectively covered on the outer wall of the rod from both sides, and the butt joints of the two side edges of the two reinforcing plates are welded to each other.
3. The chord reinforcement structure for steel structure roof maintenance according to claim 2, characterized in that: The inner wall of the stiffening plate is in close contact with the outer wall of the rod.
4. The chord reinforcement structure for steel structure roof maintenance according to claim 1, characterized in that: The inner walls of both sides of each angle steel are in close contact with the outer wall of the stiffening ring.
5. The chord reinforcement structure for steel structure roof maintenance according to claim 1, characterized in that: The stiffening rings are arranged at intervals along the extending direction of the rod.
6. The chord reinforcement structure for steel structure roof maintenance according to claim 1, characterized in that: The ends of the rods of the steel truss are connected through the grid balls, and the ends of the double-wrapped angle steels are pressed against the surface of the grid balls and welded at the pressing points.