Double-stage yield energy dissipation support suitable for large dust remover structure

Abstract

The utility model discloses a double-stage yield energy dissipation support suitable for a large dust remover structure. The double-stage yield energy dissipation support aims at improving the anti-seismic property and stability of a steel structure of a large dust remover under extreme conditions such as earthquakes. The structure mainly comprises a square steel tube, a core rod, movable I-shaped steel and long I-shaped steel. First and second grooves are formed in the upper and lower ends of the square steel tube; rectangular extension steel extends out of the front and rear left ends; reinforcing rib plates are arranged at the two ends of the core rod by taking the rectangular core plate as the center; a web of the movable I-shaped steel extends rightwards to form overhanging steel, and energy consumption dampers are mounted on the two sides; and a movable cavity is formed in the long I-shaped steel to accommodate the overhanging steel of the movable I-shaped steel. The reinforcing rib plates of the core rod are accurately positioned in the first groove and the second groove of the square steel pipe. According to the double-stage energy dissipation steel structure, the double-stage energy dissipation design is innovatively adopted, asynchronous yield displacement is achieved through the strength difference and the structure difference of the energy dissipation damper and the core rod steel, the double-stage energy dissipation effect is achieved, and the anti-seismic capacity of the steel structure is remarkably improved.

Description

Technical Field

[0001] This invention relates to the field of energy-dissipating support structure technology, and in particular to a two-stage yielding energy-dissipating support suitable for large dust collector structures. Background Technology

[0002] Dust collectors are characterized by their large size and significant weight, making them particularly susceptible to stress under seismic forces. Especially at structural connections, such as beam-column joints and the connection between supports and the main structure, stress concentration can easily lead to problems like weld cracking and loose bolts. These issues not only weaken the overall structural stability but can also trigger a chain reaction, causing the entire dust collector to fail, resulting in serious consequences such as environmental pollution and production disruptions.

[0003] To enhance the seismic performance of dust collectors and reduce the damage to their structures caused by dynamic loads such as earthquakes, installing buckling-resistant and energy-dissipating braces has become an effective technical means.

[0004] However, existing buckling-restrained brace structures used in dust collectors are relatively simple in design and functionally limited, possessing only a single yield point. When this brace structure yields, its stiffness decreases significantly, and after yielding, it is difficult to effectively curb the rapid escalation of deformation in the overall dust collector structure (especially critical load-bearing parts). Furthermore, existing traditional buckling-restrained brace structures cannot meet the requirements of dust collectors to undergo phased yielding and energy dissipation when subjected to earthquakes of varying intensities, such as minor (e.g., wind-induced vibration), moderate, and major earthquakes. Utility Model Content:

[0005] This invention addresses the shortcomings of existing technologies by providing a dual-stage yield energy dissipation support suitable for large dust collector structures. This dual-stage yield energy dissipation support structure can be installed on the top, side, or bottom of large dust collectors, solving the problems of existing anti-buckling support structures for dust collectors that have only a single yield point, low stiffness after yielding, and inability to prevent frame deformation, component damage, and functional failure of large dust collectors under seismic loads.

[0006] To achieve the above objectives, the technical solution adopted by this utility model is: a two-stage yielding energy dissipation support suitable for large dust collector structures, comprising:

[0007] The square steel tube has a first groove and a second groove at the middle of the upper and lower ends, respectively, and rectangular extension steel is provided at the left end of the front and rear ends.

[0008] The core rod has a rectangular core plate in the middle and reinforcing ribs at both ends of the core rod.

[0009] The movable I-beam has its web extending to the right to form an overhanging steel, and energy-dissipating dampers are installed on both sides.

[0010] The long I-shaped steel is arranged in the square steel pipe, the extended steel of the movable I-shaped steel is inserted into the movable cavity, the core rod is inserted into the square steel pipe and covers the upper and lower sides of the long I-shaped steel and the movable I-shaped steel, and the reinforcing rib plates are respectively clamped in the first groove and the second groove of the square steel pipe.

[0011] The right end of the core rod and the long I-shaped steel are fixedly connected with the square steel pipe through bolts, the left end of the core rod is fixedly connected with the movable I-shaped steel through bolts, and the extended steel and the energy dissipation damper are fixedly connected with the movable I-shaped steel through bolts.

[0012] In some embodiments, the core rod side plate, the first core rod pad and the second core rod pad are further included.

[0013] The core rod side plate is located on the two sides of the rectangular core plate, is inserted into the square steel pipe and covers the two sides of the long I-shaped steel, and the square steel pipe, the core rod side plate and the long I-shaped steel are fixedly connected through nuts after bolts pass through the holes on the square steel pipe, the core rod side plate and the long I-shaped steel.

[0014] The first core rod pad covers the movable I-shaped steel and is located between the left end of the core rod and the movable I-shaped steel, and the left end of the core rod, the first core rod pad and the movable I-shaped steel are fixedly connected through nuts after bolts pass through the holes on the left end of the core rod, the first core rod pad and the movable I-shaped steel.

[0015] The second core rod pad covers the right end of the long I-shaped steel and is located between the right end of the core rod and the long I-shaped steel, and the square steel pipe, the right end of the core rod, the second core rod pad and the long I-shaped steel are fixedly connected through nuts after bolts pass through the holes on the square steel pipe, the right end of the core rod, the second core rod pad and the long I-shaped steel.

[0016] In some embodiments, the left and right ends of the core rod are respectively provided with transition plates and reinforcing fixed plates, the transition plates are fixedly connected to the edges of the left and right ends of the rectangular core plate, and the reinforcing fixed plates are fixedly connected to the edges of the left and right ends of the transition plates; the reinforcing fixed plates are provided with holes, and the reinforcing rib plates are perpendicular to the same side of the transition plates and the reinforcing fixed plates.

[0017] In some embodiments, the two ends of the energy dissipation damper adopt low-alloy high-strength steel Q355, and the web plate in the middle adopts low-yield-point steel LY160.

[0018] In some embodiments, the core rod adopts low-yield-point high-ductility steel Q195.

[0019] The utility model discloses the beneficial effect is:

[0020] The utility model adopts double stage energy dissipation design, utilizes the strength difference and structure difference of energy dissipation damper and core rod steel material, makes the yield displacement of energy dissipation damper and core rod different to reach the purpose of double stage energy dissipation. Installing this double stage energy dissipation support structure on the large dust collector is more effective than the traditional support, not only can effectively prevent the deformation distortion of steel structure of dust collector under the action of earthquake even fracture, but also can keep the stable operation of the internal components of dust collector.

[0021] Compared with the conventional buckling restrained brace with only single yield point, the utility model has obvious advantages. The double stage buckling-restrained energy dissipation brace can realize double stage yield energy dissipation mechanism under different seismic intensity conditions, and can fully play its excellent energy dissipation performance under the conditions of frequent earthquake, fortification earthquake and rare earthquake, effectively dissipate seismic energy, and then significantly reduce the influence of seismic force on the main structure of large dust collector.

[0022] Specifically, the energy dissipation damper and the core rod jointly constitute a double stage yield energy dissipation system. The web of the energy dissipation damper is made of low yield point steel, which will first yield and deform under small earthquakes, thereby absorbing and dissipating part of the seismic energy; while under large earthquakes, the core rod will undergo multi-wave buckling deformation, entering the second stage of yield energy dissipation state, further absorbing and dissipating seismic energy. In this way, the energy dissipation damper and the core rod realize double stage energy dissipation by yielding in turn, and improve the seismic performance of the whole support system. BRIEF DESCRIPTION OF DRAWINGS

[0023] Figure 1 It is an assembly drawing of the double stage yield energy dissipation support suitable for large dust collector structure of the utility model;

[0024] Figure 2 It is a double stage explosion drawing of the double stage yield energy dissipation support suitable for large dust collector structure of the utility model;

[0025] Figure 3 It is an explosion drawing of the double stage yield energy dissipation support suitable for large dust collector structure of the utility model;

[0026] Figure 4 It is a schematic diagram of the core rod of the double stage yield energy dissipation support structure suitable for large dust collector structure of the utility model;

[0027] Figure 5 It is a structural schematic diagram of square steel tube of the double stage yield energy dissipation support suitable for large dust collector structure of the utility model;

[0028] Figure 6 It is a structural schematic diagram of movable I-shaped steel of the double stage yield energy dissipation support suitable for large dust collector structure of the utility model;

[0029] Figure 7 This is a schematic diagram of the internal structure of a dual-stage yielding energy-dissipating support suitable for large dust collectors according to this utility model.

[0030] In the diagram: 1. Square steel tube; 11. First groove; 12. Second groove; 13. Extension steel; 2. Core rod; 21. Rectangular core plate; 22. Transition plate; 23. Reinforcing rib plate; 24. Reinforcing fixing plate; 3. Movable I-beam; 31. Outwardly extending steel; 32. Fixing hole c; 4. Nut a; 40. Bolt a; 5. Nut b; 50. Bolt b; 6. Core rod side plate; 7. First core rod pad plate; 8. Long I-beam; 81. Fixing hole b; 82. Fixing hole a; 83. Movable cavity; 9. Second core rod pad plate; 10. Energy dissipating damper; 110. Bolt c; 120. Nut c. Detailed Implementation

[0031] In the description of the embodiments of this utility model, it should be noted that if terms such as "upper," "lower," "left," "right," or "inner" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship commonly used when the utility model product is in use, they are only for the convenience of describing the utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of the utility model. Furthermore, terms such as "first" and "second" are only used to distinguish descriptions and should not be construed as indicating or implying relative importance.

[0032] In the description of the embodiments of this utility model, it should also be noted that, unless otherwise explicitly specified and limited, the terms "set," "install," "connect," and "link" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0033] The present invention will now be described in further detail with reference to the accompanying drawings:

[0034] See Figures 1-7 This utility model provides a two-stage yielding energy dissipation support suitable for large dust collector structures, comprising:

[0035] A square steel pipe 1 has fixing holes b81 on its upper and lower sides and a fixing hole a82 on its right end. A first groove 11 and a second groove 12 are respectively provided at the middle of the upper and lower ends of the square steel pipe 1. A rectangular extension steel 13 is provided at the middle of the front and rear left ends, and several fixing holes c32 are provided on the extension steel 13.

[0036] The core rod 2 has a rectangular core plate 21 in the middle and reinforcing ribs 23 at both ends.

[0037] The web of the movable I-beam 3 extends to the right, forming an overhanging steel 31. Several fixing holes a82 are provided at the upper and lower flanges of the movable I-beam 3, and several fixing holes c32 are also provided at its web position. Several fixing holes c32 are provided at the bottom and top of the energy-dissipating damper 10. Energy-dissipating dampers 10 are installed on the left and right sides of the web of the movable I-beam 3 (the structure of the energy-dissipating damper 10 is similar to two I-beams connected at the bottom but not at the top).

[0038] A long I-beam 8 has an internal movable cavity 83. The long I-beam 8 is housed within a square steel tube 1. The extended steel 31 of a movable I-beam 3 is inserted into the movable cavity 83. A certain distance is maintained between the upper and lower flanges of the movable I-beam 3 and the upper and lower flanges of the long I-beam 8; they are not tightly connected. A core rod 2 is inserted into the square steel tube 1 and covers the upper and lower surfaces of the long I-beam 8 and the movable I-beam 3. Reinforcing ribs 23 on the core rod are respectively engaged in the first groove 11 and the second groove 12 of the square steel tube 1. The length of the second groove 12 is slightly greater than the length of the reinforcing rib 23.

[0039] Specifically, the upper and lower flanges of the long I-beam 8 are respectively provided with fixing holes b81 of equal spacing, and the right end of the long I-beam has several fixing holes a82 of equal size reserved.

[0040] One end of the core rod 2 and the long I-beam 8 are fixedly connected to the square steel tube 1 by bolts; the other end of the core rod 2 is fixedly connected to the movable I-beam 3 by bolts. The extension steel 13 and the energy dissipation damper 10 are fixedly connected to the movable I-beam 3 by bolts. Specifically, the bolts c110 are passed through the fixing holes c32 on the extension steel 13, c32 at the bottom of the energy dissipation damper 10, c32 on the web of the movable I-beam 3, and c32 at the top of the energy dissipation damper 10, and then tightened with nuts c120.

[0041] In some embodiments, see Figure 3 The device also includes a pad for supporting the core rod 2, thereby making it easier for the reinforcing ribs 23 on the core rod 2 to be exposed from the first groove 11 and the second groove 12.

[0042] The pads may include a core rod side plate 6, a first core rod pad 7, and a second core rod pad 9. The core rod side plate 6 has equally spaced fixing holes b81 located on both sides of the rectangular core plate 21 and inserted into the square steel tube 1, simultaneously covering the edges of the upper and lower flanges of the long I-beam 8. The square steel tube 1, the core rod side plate 6, and the long I-beam 8 are secured with bolts b50 passing through their respective fixing holes b81 and nuts b5. The first core rod pad 7 has several fixing holes a82 and covers the left end of the movable I-beam 3. The second core rod pad 9 also has several equally sized fixing holes a82 and covers the right end of the long I-beam 8.

[0043] See Figure 4 The core rod 2 includes a core plate 21 with a rectangular cross-section, and transition plates 22 with isosceles trapezoidal cross-sections connected to both sides of the rectangular core plate 21. The upper side of the isosceles trapezoid of the transition plate 22 is equal to the width of the rectangular core plate 21, and the lower side is connected to a reinforcing fixing plate 24 with a rectangular cross-section. A reinforcing rib 23 perpendicular to both the reinforcing fixing plate 24 and the transition plate 22 is also provided on the same side, and the reinforcing rib 23 is located at the center line of both.

[0044] See Figure 7 The reinforcing plates 24 at both ends of the core rod 2 have several fixing holes a82. The reinforcing plate 24 at the left end of the core rod 2 covers the first core rod pad 7, and is fixedly connected to the left end of the core rod 2, the first core rod pad 7, and the movable I-beam 3 by bolts a40 passing through the fixing holes a82 on the left end reinforcing plate 24, the first core rod pad 7, and the movable I-beam 3 with nuts a4. The reinforcing plate 24 at the right end of the core rod 2 covers the second core rod pad 9, and is fixedly connected to the square steel tube 1, the right end of the core rod 2, the second core rod pad 9, and the long I-beam 8 by bolts a40 passing through the fixing holes a82 on the square steel tube 1, the right end of the core rod 2, the second core rod pad 9, and the long I-beam 8 with nuts a4.

[0045] The principle of this invention: This invention provides a dual-stage yielding energy-dissipating support suitable for large dust collector structures, which can be installed on the top, side, and bottom according to the applicable conditions of the dust collector. It combines an energy-dissipating damper 10 with a core rod 2. The web of the energy-dissipating damper 10 is made of low-yield-point steel. When the support is subjected to axial force, a displacement difference occurs between the upper and lower end plates of the energy-dissipating damper 10, causing the web to deform. Under frequent and design earthquakes, the energy-dissipating damper 10 undergoes the first stage of yielding, increasing structural damping, and the support is in the elastic stage, reducing seismic response. Under design and rare earthquakes, the core rod 2 undergoes multi-wave buckling deformation to dissipate energy. At this time, the energy-dissipating damper 10 participates in auxiliary energy dissipation, undergoing the second stage of yielding, and the support enters the plastic stage, dissipating more seismic energy. By utilizing the difference in strength between different steels, the yield displacements of the two components differ, ultimately achieving the purpose of dual-stage energy dissipation. Furthermore, this support uses a double core rod 2 arrangement, resulting in greater stiffness and stronger energy dissipation capacity.

[0046] Regarding constrained buckling behavior: The buckling behavior of the support member is restricted by the outer square steel tube 1, so that it will not buckle instability when under stress, but will absorb seismic energy in a stable energy dissipation manner.

[0047] Through the above-described method, this utility model provides a dual-stage yielding energy-dissipating brace suitable for large dust collector structures, exhibiting excellent energy dissipation capabilities. During use, the dual-stage energy-dissipating brace functions differently depending on the earthquake intensity. When the earthquake intensity is low, the brace operates in the first stage, providing additional damping to the structure and reducing its seismic response. When the earthquake intensity is high, the brace enters the second stage, where the energy-dissipating elements of the second stage begin to work, further dissipating energy. Simultaneously, the residual deformation of the brace after unloading is controlled within an acceptable range, preventing excessive residual deformation after the earthquake and effectively reducing the structure's seismic response, protecting the main structure of the dust collector from severe damage. As a core component, the buckling-resistance brace, through reasonable design and construction, avoids the buckling phenomenon that traditional braces are prone to under compression, thus ensuring stable mechanical properties under tensile and compressive cyclic loads and providing reliable lateral force resistance and energy dissipation capabilities.

[0048] The above are merely preferred embodiments of this utility model and are not intended to limit the scope of this utility model. Various modifications and variations can be made to this utility model by those skilled in the art. Any modifications, equivalent substitutions, or improvements made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A two-stage yielding energy-dissipating support suitable for large dust collector structures, characterized in that, include: The square steel pipe (1) has a first groove (11) and a second groove (12) at the middle positions of the upper and lower ends respectively, and a rectangular extension steel (13) is provided at the left end of the front and rear ends. The core rod (2) has a rectangular core plate (21) in the middle and reinforcing ribs (23) at both ends of the core rod (2). The movable I-beam (3) has its web extending to the right to form an overhanging steel (31), and energy-dissipating dampers (10) are installed on both sides. A long I-beam (8) is provided with a movable cavity (83); the long I-beam (8) is set in a square steel tube (1), the protruding steel (31) of the movable I-beam (3) is inserted into the movable cavity (83), the core rod (2) is inserted into the square steel tube (1) and covers the upper and lower surfaces of the long I-beam (8) and the movable I-beam (3), and the reinforcing ribs (23) on it are respectively snapped into the first groove (11) and the second groove (12) of the square steel tube (1); The right end of the core rod (2) and the long I-beam (8) are fixedly connected to the square steel pipe (1) by bolts; the left end of the core rod (2) is fixedly connected to the movable I-beam (3) by bolts; the extension steel (13) and the energy-dissipating damper (10) are fixedly connected to the movable I-beam (3) by bolts.

2. The dual-stage yielding energy-dissipating support suitable for large dust collector structures according to claim 1, characterized in that, It also includes a core rod side plate (6), a first core rod pad plate (7), and a second core rod pad plate (9); The core rod side plate (6) is located on both sides of the rectangular core plate (21). It is inserted into the square steel pipe (1) and covers both sides of the long I-beam (8). After the bolts pass through the holes on the square steel pipe (1), the core rod side plate (6) and the long I-beam (8), the square steel pipe (1), the core rod side plate (6) and the long I-beam (8) are fixedly connected with nuts. The first core rod pad (7) covers the movable I-beam (3) and is located between the left end of the core rod (2) and the movable I-beam (3). After the bolt passes through the hole on the left end of the core rod (2), the hole on the first core rod pad (7) and the hole on the movable I-beam (3), the left end of the core rod (2), the first core rod pad (7) and the movable I-beam (3) are fixedly connected by a nut. The second core rod pad (9) covers the right end of the long I-beam (8), and is located between the right end of the core rod (2) and the long I-beam (8). After the bolt passes through the hole on the square steel pipe (1), the hole on the right end of the core rod (2), the hole on the second core rod pad (9) and the hole on the long I-beam (8), the square steel pipe (1), the right end of the core rod (2), the second core rod pad (9) and the long I-beam (8) are fixedly connected by a nut.

3. A dual-stage yielding energy-dissipating support suitable for large dust collector structures according to claim 2, characterized in that, The core rod (2) is provided with a transition plate (22) and a reinforcing fixing plate (24) at its left and right ends respectively. The transition plate (22) is fixedly connected to the edges of the left and right ends of the rectangular core plate (21), and the reinforcing fixing plate (24) is fixedly connected to the edges of the left and right ends of the transition plate (22). The reinforcing fixing plate (24) is provided with holes, and the reinforcing rib plate (23) is perpendicular to the same side of the transition plate (22) and the reinforcing fixing plate (24).

4. A dual-stage yielding energy-dissipating support suitable for large dust collector structures according to claim 1, characterized in that, The energy-dissipating damper (10) is made of low-alloy high-strength steel Q355 at both ends and low-yield-point steel LY160 in the middle web.

5. A dual-stage yielding energy-dissipating support suitable for large dust collector structures according to claim 1, characterized in that, The core rod (2) is made of Q195 steel with low yield point and high ductility.

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