An anti-continuous collapse steel structure industrial plant

Abstract

The utility model relates to the technical field of steel structure industrial plant, disclose a kind of anti-continuous collapse steel structure industrial plant, including multiple steel columns, multiple steel column upper surface are all fixedly connected with steel beam, steel beam side wall is fixedly connected with roof truss, steel column side wall is provided with anti-collapse component, and steel column bottom is provided with reinforcing component;The anti-collapse component includes diagonal brace, and one end of the diagonal brace is fixedly connected in the steel column side wall, and the other end of the diagonal brace is fixedly connected in adjacent steel column side wall, and the roof truss bottom is fixedly connected with suspension pull rod, and the suspension pull rod lower end is fixedly connected with ground.The utility model in, through X-shaped diagonal brace provides spare force transmission path, suspension pull rod constructs roof bottom protection, and the synergies of connecting plate and stiffener rib reinforced node force transmission, prevent roof truss overall collapse, node advance failure effect, improve the structure stability and disaster tolerance ability of plant under impact, explosion and other unexpected conditions by the above structure.

Description

Technical Field

[0001] This utility model relates to the technical field of steel structure industrial plant buildings, and in particular to a steel structure industrial plant building resistant to progressive collapse. Background Technology

[0002] In the industrial production sector, steel structure industrial plants are widely used in industries such as machinery manufacturing, chemical engineering, and warehousing and logistics due to their advantages such as large spans, high space utilization, and short construction periods. During long-term use, these plants not only bear conventional loads such as their own weight, equipment loads, and wind and snow loads, but also face unexpected risks such as impacts and explosions. If a component fails under these unforeseen circumstances, and the chain reaction of damage cannot be effectively prevented, it can easily lead to a complete collapse, causing not only huge losses of equipment and property but also threatening the lives of personnel on site. Therefore, improving the resistance to progressive collapse after partial failure in steel structure industrial plants, and ensuring the stability and safety of the structure, has become a core technical requirement urgently needing to be addressed in the design and construction of steel structure industrial plants.

[0003] The collapse-resistant design of existing steel structure industrial plants typically focuses on "enhancing the strength of individual components," employing relatively traditional mechanical structures and technical principles. In terms of load transfer systems, they largely rely on the main frame composed of steel columns and beams for load transmission. Specifically, steel columns bear vertical loads and transfer them to the foundation, while steel beams bear roof and floor loads and then transfer them to the columns, forming a single vertical load transfer path of "slab-beam-column-foundation." To improve horizontal lateral stiffness, some plants install single diagonal bracing or ordinary cross bracing between columns, using the tensile and compressive strength of the bracing to assist in resisting horizontal loads. Regarding node connections, simple bolted or welded connections are commonly used, only meeting the force transfer requirements under normal working conditions, without special design for the continuity of force transmission after local failure. For the roof structure, support is usually achieved only through rigid connections between roof beams and roof trusses, without additional independent protective mechanisms. Its technical principle is essentially "passive resistance", that is, to cope with the load by increasing the load-bearing limit of the component itself, lacking active guidance and protection for load redistribution after local failure.

[0004] However, the existing design schemes for steel structure industrial plants have significant defects when facing the failure of local components: because the force transmission path relies excessively on a single component of the main frame and lacks dedicated backup force transmission paths, roof bottom protection, and node reinforcement mechanisms, once a critical component fails due to an accident such as an impact or explosion, it will directly cause the original force transmission path to be interrupted. The load originally borne by the failed component cannot be transferred to the adjacent healthy components in a timely and even manner, which in turn causes the adjacent components to fail one after another due to the sudden concentration of load, resulting in the continuous collapse of the entire plant. Therefore, a steel structure industrial plant resistant to progressive collapse is proposed to solve the above problems. Utility Model Content

[0005] The purpose of this application is to provide a steel structure industrial plant resistant to progressive collapse, aiming to improve the problem that in the prior art, steel structure industrial plants are prone to overall progressive collapse due to interruption of force transmission after local failure.

[0006] This application provides a progressively collapsible steel structure industrial plant using the following technical solution: A progressively collapsible steel structure industrial plant includes multiple steel columns, each of which has a steel beam fixedly connected to its upper surface. A roof truss is fixedly connected to the sidewall of each steel beam. Anti-collapse components are provided on the sidewalls of the steel columns, and reinforcing components are provided at the bottom of the steel columns. The anti-collapse component includes a diagonal brace, one end of which is fixedly connected to the side wall of one of the steel columns, and the other end of which is fixedly connected to the side wall of an adjacent steel column. A suspension rod is fixedly connected to the bottom of the roof truss, and the lower end of the suspension rod is fixedly connected to the ground. An upper connecting plate is fixedly connected to the side wall of the steel beam, and a lower connecting plate is fixedly connected to the bottom side wall of the steel column. A stiffening rib is fixedly connected between the upper connecting plate and the lower connecting plate.

[0007] By adopting the above technical solutions, the structural stability of the factory building can be improved.

[0008] Preferably, the reinforcing component includes a base and an L-shaped rib, the upper surface of the base is fixedly connected to the bottom of the steel column, and the bottom of the L-shaped rib is fixedly connected to the upper surface of the base.

[0009] By adopting the above technical solutions, the supporting strength of the steel columns is enhanced.

[0010] Preferably, the diagonal braces are distributed in an X-shape between adjacent steel columns, and the sidewalls of the multiple steel columns are fixedly connected to horizontal trusses.

[0011] By adopting the above technical solution, the connection strength between adjacent steel columns is improved.

[0012] Preferably, the L-shaped rib sidewall is fixedly connected to the sidewall of the steel column, and the L-shaped rib sidewall is fixedly connected to a triangular rib.

[0013] By adopting the above technical solutions, the shear and bending resistance of the bottom of the steel column is enhanced, preventing the bottom of the steel column from cracking due to excessive load.

[0014] Preferably, a connecting seat is fixedly connected to the upper surface of the base, and a rotating sleeve is rotatably connected inside the connecting seat.

[0015] By adopting the above technical solution, it is possible to accommodate small displacements of the steel column.

[0016] Preferably, a sliding rod is slidably connected inside the rotating sleeve, and a connecting seat two is rotatably connected to one end of the sliding rod. The side wall of the connecting seat two is fixedly connected to the side wall of the steel column.

[0017] By adopting the above technical solution, the sliding rod can slide inside the rotating sleeve.

[0018] Preferably, a damper is fixedly connected inside the rotating sleeve, and one end of the damper is fixedly connected to the other end of the sliding rod.

[0019] By adopting the above technical solution, the compressive stress at the bottom of the steel column is dispersed, and the shear and bending resistance is enhanced to dissipate the kinetic energy of the horizontal load.

[0020] In summary, this application includes at least one of the following beneficial technical effects: 1. In this utility model, the X-shaped diagonal brace provides a backup force transmission path, the suspension tie rod constructs a roof bottom protection, and the connecting plate and stiffening rib strengthen the synergistic effect of the node force transmission. This leads to a comprehensive anti-collapse effect, preventing the roof truss from collapsing as a whole and avoiding premature node failure when local components fail. This solves the problem that existing steel structure industrial plants are prone to continuous collapse due to interruption of force transmission after local failure. The above structure improves the structural stability and disaster tolerance of the plant under accidental working conditions such as impact and explosion.

[0021] 2. In this utility model, the contact area between the steel column and the foundation is increased by the base, and the L-shaped rib and triangular rib construct a triangular stable structure at the bottom of the steel column. The synergistic effect of the connecting seat, rotating sleeve, sliding rod and damper forms an inclined energy dissipation support system, which drives the bottom of the steel column to disperse the compressive stress, enhance the multiple protective responses of shear and bending resistance and dissipation of horizontal load kinetic energy, thereby achieving the effects of preventing the steel column from sinking into the foundation, preventing the bottom of the steel column from cracking, and reducing the peak stress at the bottom of the steel column. This solves the problem that the bottom of the steel column in existing steel structure industrial plants is prone to damage due to compressive stress concentration, excessive load or horizontal impact. The above structure improves the bearing stability and disaster resistance deformation capacity of the bottom of the steel column. Attached Figure Description

[0022] Figure 1 This is a three-dimensional schematic diagram of a steel structure industrial plant resistant to progressive collapse proposed in this utility model; Figure 2 This is a structural schematic diagram of the steel columns of an anti-progressive collapse steel structure industrial plant proposed in this utility model; Figure 3 This is a structural schematic diagram of the steel beams of an anti-progressive collapse steel structure industrial plant proposed in this utility model; Figure 4 This is a structural schematic diagram of the base of a steel structure industrial plant that is resistant to progressive collapse, as proposed in this utility model. Figure 5This is a schematic diagram of the rotating sleeve of a steel structure industrial plant that is resistant to progressive collapse, as proposed in this utility model.

[0023] Explanation of reference numerals in the attached drawings: 1. Steel column; 2. Steel beam; 3. Roof truss; 4. Horizontal truss; 5. Diagonal brace; 6. Suspension tie rod; 7. Upper connecting plate; 8. Lower connecting plate; 9. Stiffening rib; 10. Base; 11. L-shaped rib plate; 12. Triangular rib plate; 13. Connecting seat one; 14. Connecting seat two; 15. Rotating sleeve; 16. Sliding rod; 17. Damper. Detailed Implementation

[0024] The following is in conjunction with the appendix Figure 1 -Appendix Figure 5 This application will be described in further detail below.

[0025] A steel structure industrial plant resistant to progressive collapse, referring to Figures 1-3 The structure includes multiple steel columns 1, which bear the vertical load of the factory building. The upper surfaces of the multiple steel columns 1 are fixedly connected to steel beams 2 by high-strength bolts. The steel beams 2 are H-shaped steel components, which bear the load of the roof truss 3 and the horizontal load of the factory building, and evenly transfer the load to the steel columns 1. The side walls of the steel beams 2 are fixedly connected to the roof truss 3 by welding. The roof truss 3 is composed of upper chord, lower chord and web members welded together, which achieves the effect of supporting the roof load and distributing it to the steel beams 2. The side walls of the steel columns 1 are equipped with anti-collapse components to build a redundant defense line against progressive collapse of the factory building and achieve the effect of load redistribution in the event of local failure. The bottom of the steel columns 1 is equipped with reinforcing components to enhance the load-bearing stability of the bottom of the steel columns 1 and prevent the steel columns 1 from deforming or becoming unstable due to excessive local stress. The anti-collapse component includes diagonal braces 5. One end of the diagonal brace 5 is fixedly connected to a pre-set ear plate on the side wall of a steel column 1 by high-strength bolts. The other end of the diagonal brace 5 is fixedly connected to an ear plate on the side wall of an adjacent steel column 1 by the same connection method. A suspension rod 6 is fixedly connected to the bottom of the roof truss 3 by a pin hinge. The suspension rod 6 is made of steel strand with a diameter of 30mm. The lower end is fixedly connected to the ground by a pre-embedded anchor plate and anchor bolts to construct an independent bottom support force transmission path for the roof, realizing the load transfer effect when the roof truss 3 loses part of its support. An upper connecting plate 7 is fixedly connected to the side wall of the steel beam 2 by bolts. A lower connecting plate 8 is fixedly connected to the bottom side wall of the steel column 1 by welding. A stiffening rib 9 is fixedly connected to the upper connecting plate 7 and the lower connecting plate 8 by a fillet weld. The stiffening rib 9 is a rectangular steel plate. It works with the upper connecting plate 7 and the lower connecting plate 8 to transfer the nodal force, thereby strengthening the connection stiffness between the steel beam 2 and the steel column 1 and preventing the node from failing due to stress concentration. The side walls of multiple steel columns 1 are fixedly connected to horizontal trusses 4 by bolts. The horizontal trusses 4 are composed of angle steel members welded together, thereby enhancing the overall horizontal lateral stability of the factory building. The diagonal braces 5 are distributed in an X-shape between adjacent steel columns 1. They work with the steel columns 1 to transfer the horizontal load, thereby enhancing the lateral stiffness of the column and preventing the steel column 1 from shifting due to excessive force on one side.

[0026] Reference Figures 4-5 The reinforcing components include a base 10 and an L-shaped rib 11. The base 10 increases the contact area between the steel column 1 and the foundation and disperses the vertical load. The upper surface of the base 10 is fixedly connected to the bottom of the steel column 1 by submerged arc welding. It is used to bear all the load transmitted by the steel column 1 and transfer it to the foundation, thus preventing the steel column 1 from sinking into the foundation due to excessive local compressive stress. The L-shaped rib 11 is a low-carbon alloy steel plate bent into shape. Its bottom is fixedly connected to the upper surface of the base 10 by fillet weld. The side wall of the L-shaped rib 11 is fixedly connected to the side wall of the steel column 1 by full penetration welding. It is used to enhance the connection rigidity between the bottom of the steel column 1 and the base 10 and improve the shear and bending resistance of the bottom of the steel column 1. The side wall of the L-shaped rib 11 is fixedly connected to a triangular rib 12 by spot welding. The triangular rib 12 is an isosceles triangular steel plate. It works with the L-shaped rib 11 to fill stress concentration areas, such as the corners of the L-shaped rib 11, thus preventing the L-shaped rib 11 from deforming due to excessive local stress and preventing the rib from failing before the steel column 1. A connecting seat 13 is fixedly connected to the upper surface of the base 10 by bolts. The connecting seat 13 is composed of two parallel ear plates welded to the base plate. A rotating sleeve 15 is rotatably connected to the inside of the connecting seat 13 by a pin. A sliding rod 16 is slidably connected inside the rotating sleeve 15. One end of the sliding rod 16 is rotatably connected to a connecting seat 2 14 by a pin. The structure of the connecting seat 2 14 is the same as that of the connecting seat 13. The side wall of the connecting seat 2 14 is fixedly connected to the mounting plate preset on the side wall of the steel column 1 by bolts. It works with the connecting seat 13 and the rotating sleeve 15 to rotate at multiple angles and slide axially, thereby achieving the effect of adapting to the small displacement of the steel column 1 and avoiding additional stress on the support system. A damper 17 is fixedly connected inside the rotating sleeve 15 via a flange. The damper 17 is a viscous damper, consisting of a cylinder, a piston rod, and a damping medium. It achieves the effect of consuming kinetic energy, which is common knowledge and will not be elaborated further here. One end of the damper 17 is fixedly connected to the other end of the sliding rod 16 via a threaded connection. It is used to absorb the kinetic energy generated by the steel column 1 due to horizontal loads such as earthquakes and impacts. In conjunction with the relative sliding of the sliding rod 16 and the rotating sleeve 15, it achieves the effect of reducing the peak force at the bottom of the steel column 1 and protecting the steel column 1 and the base 10 from impact damage.

[0027] Working principle: When using the factory building, the weight of the factory building itself first acts on the roof truss 3. The roof truss 3 transfers the load to the steel beam 2 through the fixed connection between the side wall and the steel beam 2. After the steel beam 2 bears the load, it transfers the load vertically to the steel column 1 through the fixed connection with the upper surface of the steel column 1. Finally, the steel column 1 transfers all the vertical load to the base 10 at the bottom, and then from the base 10 to the foundation of the factory building, completing the vertical force transmission path. When the factory building encounters horizontal forces such as wind loads and equipment vibrations, the horizontal truss 4, fixed to the side wall of the steel column 1, takes effect first. The horizontal truss 4, through the rigid connection of multiple members, distributes the horizontal force to the adjacent steel columns 1, preventing a single steel column 1 from shifting laterally due to excessive local horizontal force. The diagonal braces 5 are distributed in an X-shape between the adjacent steel columns 1. Under normal working conditions, the diagonal braces 5 assist the steel columns 1 in bearing the horizontal force and enhance the lateral stiffness of the column. When a steel column 1 fails due to an accident such as an impact or explosion, the load originally borne by the failed steel column 1 is transferred to the adjacent healthy steel columns 1 on both sides through the diagonal braces 5. To prevent concentrated loads from causing adjacent steel columns 1 to fail consecutively and to prevent a chain reaction of collapses between columns, the suspension rod 6 is fixedly connected at one end to the bottom of the roof truss 3 and fixedly anchored to the ground at the other end, forming an independent vertical force transmission path from the roof truss 3 to the suspension rod 6 to the ground. When the steel beam 2 or steel column 1 fails partially, causing the roof truss 3 to lose some support, the suspension rod 6 uses its own tensile strength to prevent the roof truss 3 from collapsing as a whole due to loss of support. At the same time, the suspension rod 6 can distribute the load of the roof truss 3 to the ground, reducing dependence on the failed area of ​​the main frame and preventing secondary collapse caused by roof collapse. The upper connecting plate 7 is fixed to the side wall of the steel beam 2, and the lower connecting plate 8 is fixed to the bottom side wall of the steel column 1. The stiffening rib 9 is welded between the two. Under normal working conditions, this structure strengthens the connection stiffness between the steel beam 2 and the steel column 1, ensuring reliable force transmission. When stress concentration occurs at the connection between the steel beam 2 and the steel column 1, the stiffening rib 9 can disperse the concentrated stress and prevent the connecting plate from failing due to shear or bending. Even if the direct connection between the steel beam 2 and the steel column 1 is damaged, the node formed by the connecting plate and the stiffening rib 9 can still temporarily transfer the load, buying time for the redistribution of internal forces in the structure. The upper surface of the base 10 is fixedly connected to the bottom of the steel column 1, increasing the contact area between the steel column 1 and the foundation, and preventing the steel column 1 from sinking into the foundation due to excessive local compressive stress. The bottom of the L-shaped rib plate 11 is fixed to the upper surface of the base 10, and the side wall is fixed to the side wall of the steel column 1, forming a triangular stable structure, which enhances the shear and bending resistance of the bottom of the steel column 1 and prevents the bottom of the steel column 1 from cracking due to excessive load. The triangular rib plate 12 is fixed to the side wall of the L-shaped rib plate 11, further filling the stress concentration area, improving the deformation resistance of the rib plate itself, and preventing the rib plate from failing before the steel column 1. The connecting seat 13 is fixed to the upper surface of the base 10, and the rotating sleeve 15 internally rotates and slides with the sliding rod 16. The other end is rotatably connected to the side wall of the steel column 1 via connecting seat 2 14. One end of the damper 17 inside the rotating sleeve 15 is fixedly connected to the sliding rod 16, and the other end is fixedly connected to the inner wall of the rotating sleeve 15. When the steel column 1 shifts laterally due to horizontal load, the sliding rod 16 slides along the inside of the rotating sleeve 15, pushing the damper 17 to produce viscous deformation, converting the kinetic energy of the steel column 1 into heat energy consumption, and reducing the peak force at the bottom of the steel column 1. At the same time, the rotatable connection between the rotating sleeve 15 and connecting seat 13 and connecting seat 2 14 can adapt to the small displacement of the steel column 1, avoid the additional stress generated by the support system due to forced constraint, and ensure that the damper 17 consumes energy stably without damaging the steel column 1 or the base 10.

Claims

1. A steel structure industrial plant resistant to progressive collapse, comprising multiple steel columns (1), characterized in that: Steel beams (2) are fixedly connected to the upper surface of multiple steel columns (1), roof trusses (3) are fixedly connected to the side walls of the steel beams (2), anti-collapse components are provided on the side walls of the steel columns (1), and reinforcing components are provided at the bottom of the steel columns (1); The anti-collapse component includes a diagonal brace (5), one end of which is fixedly connected to the side wall of a steel column (1), and the other end of which is fixedly connected to the side wall of an adjacent steel column (1). A suspension rod (6) is fixedly connected to the bottom of the roof truss (3), and the lower end of the suspension rod (6) is fixedly connected to the ground. An upper connecting plate (7) is fixedly connected to the side wall of the steel beam (2), and a lower connecting plate (8) is fixedly connected to the bottom side wall of the steel column (1). A stiffening rib (9) is fixedly connected between the upper connecting plate (7) and the lower connecting plate (8).

2. The steel structure industrial plant resistant to progressive collapse according to claim 1, characterized in that: The reinforcing component includes a base (10) and an L-shaped rib (11). The upper surface of the base (10) is fixedly connected to the bottom of the steel column (1), and the bottom of the L-shaped rib (11) is fixedly connected to the upper surface of the base (10).

3. The steel structure industrial plant resistant to progressive collapse according to claim 1, characterized in that: The diagonal bracing (5) is distributed in an X-shape between adjacent steel columns (1), and the side walls of multiple steel columns (1) are fixedly connected to horizontal trusses (4).

4. The steel structure industrial plant resistant to progressive collapse according to claim 2, characterized in that: The side wall of the L-shaped rib (11) is fixedly connected to the side wall of the steel column (1), and the side wall of the L-shaped rib (11) is fixedly connected to a triangular rib (12).

5. A progressively collapsible steel structure industrial plant according to claim 4, characterized in that: A connecting seat (13) is fixedly connected to the upper surface of the base (10), and a rotating sleeve (15) is rotatably connected inside the connecting seat (13).

6. The steel structure industrial plant resistant to progressive collapse according to claim 5, characterized in that: The rotating sleeve (15) is slidably connected to a sliding rod (16), and one end of the sliding rod (16) is rotatably connected to a connecting seat (14). The side wall of the connecting seat (14) is fixedly connected to the side wall of the steel column (1).

7. A progressively collapsible steel structure industrial plant according to claim 6, characterized in that: A damper (17) is fixedly connected inside the rotating sleeve (15), and one end of the damper (17) is fixedly connected to the other end of the sliding rod (16).

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