Prefabricated assembly type Rc column-energy dissipation steel beam structure

Abstract

The invention discloses a prefabricated Rc column-energy consumption steel beam structure, which relates to the technical field of building structure engineering and comprises a prefabricated upper column, a prefabricated lower column and an energy consumption steel beam. An upper column hoop is arranged at the bottom of the prefabricated upper column, and the bottom edge of the upper column hoop exceeds the bottom surface of the prefabricated upper column; a lower column hoop is arranged at the top of the lower prefabricated column, the top edge of the lower column hoop exceeds the top face of the lower prefabricated column, and the lower prefabricated column and the upper prefabricated column are in butt joint through the lower column hoop and the upper column hoop and are welded and fixed. The energy dissipation steel beam is connected to the side wall of the lower column hoop of the prefabricated lower column. The prefabricated energy-dissipation steel column has efficient assembly performance, all parts of the prefabricated upper column, the prefabricated lower column and the energy-dissipation steel beam are accurately prefabricated in a factory and rapidly assembled on site, and the construction period is greatly shortened; the steel beam energy dissipation sections and the hoops are stably connected with the column body, so that energy can be effectively dissipated under the action of an earthquake, and the structural safety is guaranteed; and the device adapts to complex working conditions in high-intensity areas, and structural integrity and high stability are guaranteed.

Description

Technical Field

[0001] The present invention relates to the field of building structure engineering technology, and more specifically to a prefabricated assembled RC column-energy-absorbing steel beam structure, which is suitable for building structures such as office buildings, shopping malls, industrial plants, etc. with large spans, and is particularly suitable for high-intensity earthquake areas. Background Art

[0002] Prefabricated buildings are energy-saving, efficient, and environmentally friendly. Traditional reinforced concrete (RC) frame structures often collapse due to brittle failure in the node area under earthquakes. In order to improve the seismic performance of structures, prefabricated structures have been widely used in recent years. However, existing prefabricated structures still have deficiencies in node connection and energy dissipation capacity, especially in high-intensity earthquake areas, and the seismic performance and energy dissipation capacity of the structures still need to be further improved.

[0003] Existing prefabricated structures usually use rigid or semi-rigid connections, which are prone to stress concentration under earthquakes, leading to damage in the node area. In addition, the traditional steel beam structure has limited energy dissipation capacity under earthquakes and is difficult to effectively absorb and dissipate earthquake energy. Therefore, in order to fundamentally improve the performance of prefabricated buildings, including: convenience in production, transportation and construction, structural earthquake resistance, safety and reliability, and superior earthquake toughness (no need for repair or only a little repair after an earthquake to restore the use function of the structure), that is, with the characteristics of simplicity, safety, sustainability and good toughness, there is an urgent need for a new type of prefabricated structure that can not only improve the connection performance of the nodes, but also enhance the energy dissipation capacity of the structure. Summary of the invention

[0004] In view of this, in order to solve the problems of insufficient energy dissipation capacity of traditional prefabricated nodes, easy overall collapse in earthquakes, concentrated plastic deformation of steel beams after earthquakes resulting in irreparable structures, low shear force transmission efficiency at the connection interface between RC columns and steel beams, and prominent contradiction between vertical deformation and horizontal seismic resistance requirements of large-span structures, the present invention provides a prefabricated and assembled RC column-energy-absorbing steel beam structure, aiming to solve the above technical problems.

[0005] In order to achieve the above object, the present invention adopts the following technical solution:

[0006] A prefabricated assembled Rc column-energy dissipation steel beam structure, comprising:

[0007] A prefabricated upper column, wherein the bottom of the prefabricated upper column is provided with an upper column hoop, and the bottom edge of the upper column hoop exceeds the bottom surface of the prefabricated upper column;

[0008] A prefabricated lower column, wherein a lower column sleeve is provided on the top of the prefabricated lower column, the top edge of the lower column sleeve exceeds the top surface of the prefabricated lower column, and the prefabricated lower column and the prefabricated upper column are butt-jointed and welded to each other through the lower column sleeve and the upper column sleeve;

[0009] An energy-absorbing steel beam is connected to the side wall of the lower column sleeve of the prefabricated lower column.

[0010] Through the above technical scheme, the present invention has efficient assembly. The prefabricated upper columns, prefabricated lower columns and various components of the energy-absorbing steel beams are accurately prefabricated in the factory and quickly assembled on site, which greatly shortens the construction period. It has good seismic resistance. Through the stable connection between the energy dissipation section of the steel beam and the hoop and the column, it can effectively dissipate energy under the action of an earthquake to ensure the safety of the structure. It can also adapt to complex working conditions in high-intensity areas to ensure the integrity and stability of the structure. At the same time, the column form is flexibly optional to meet different building needs.

[0011] Preferably, in the above-mentioned prefabricated assembled Rc column-energy-absorbing steel beam structure, an upper column hoop anchor plate is pre-embedded and fixed at the bottom of the prefabricated upper column, and an upper column anchor plate hole is opened on the upper column hoop anchor plate. The end of the upper column longitudinal reinforcement inside the prefabricated upper column passes through the upper column anchor plate hole, and the upper column hoop anchor plate is locked by a nut, and the upper column hoop is welded and fixed to the outer edge of the upper column hoop anchor plate.

[0012] Preferably, in the above-mentioned prefabricated assembled Rc column-energy-absorbing steel beam structure, a lower column sleeve anchor plate is pre-embedded and fixed at the top of the prefabricated lower column, and a lower column anchor plate hole is opened on the lower column sleeve anchor plate. The end of the lower column longitudinal reinforcement inside the prefabricated lower column passes through the lower column anchor plate hole, and the lower column sleeve anchor plate is locked by a nut, and the lower column sleeve is welded and fixed to the outer edge of the lower column sleeve anchor plate.

[0013] Preferably, in the above-mentioned prefabricated assembled Rc column-energy-absorbing steel beam structure, the energy-absorbing steel beam is an I-beam.

[0014] Preferably, in the above-mentioned prefabricated assembled Rc column-energy-absorbing steel beam structure, a steel corbel is fixed to the outer wall of the lower column sleeve, and the energy-absorbing steel beam includes a steel beam energy dissipation section and a steel beam middle section. An upper flange splicing plate, a web splicing plate and a lower flange splicing plate are connected between the steel beam energy dissipation section and the steel corbel, and between the steel beam energy dissipation section and the steel beam middle section.

[0015] Preferably, in the above-mentioned prefabricated assembled Rc column-energy-absorbing steel beam structure, the number of the lower column hoop anchor plates on the inner side of the lower column hoop is two, and they respectively correspond to the flanges of the steel corbel.

[0016] Preferably, in the above-mentioned prefabricated assembled Rc column-energy-absorbing steel beam structure, the prefabricated upper column and the prefabricated lower column are both prefabricated with high-strength concrete; or, the prefabricated upper column and the prefabricated lower column are both hollow columns, and the inner cavity of the hollow column is used for post-cast concrete.

[0017] Preferably, in the above-mentioned prefabricated assembled Rc column-energy-absorbing steel beam structure, the bottom edge of the upper column hoop has a groove.

[0018] Preferably, in the above-mentioned prefabricated assembled Rc column-energy-absorbing steel beam structure, the upper column hoop, the lower column hoop and the energy-absorbing steel beam are all treated with anti-corrosion and fire-proofing.

[0019] It can be seen from the above technical solutions that, compared with the prior art, the present invention discloses a method having the following beneficial effects:

[0020] 1. Improve construction efficiency and quality: The prefabricated and assembled design allows the components to be prefabricated in the factory, making on-site installation convenient and quick, greatly shortening the construction period, reducing on-site wet operations, and improving construction efficiency and quality.

[0021] 2. Improve the seismic performance of the structure: The design of the energy dissipation section of the steel beam enables the structure to effectively dissipate energy under earthquake action and improve the seismic performance of the structure. At the same time, the connection method between the upper column hoop and the lower column hoop and the prefabricated column can effectively transmit force and ensure the stability of the structure under earthquake action, which is suitable for high-intensity areas.

[0022] 3. Reduce maintenance costs and time: The replaceable steel beam energy dissipation section design makes it easy to replace the damaged energy dissipation section after a disaster such as an earthquake, restore the performance of the structure, and reduce maintenance costs and time.

[0023] 4. Improve the adaptability and flexibility of the structure: The prefabricated upper column and the prefabricated lower column can be solid columns or hollow columns. In the case of hollow columns, the cavity concrete can be poured later. The appropriate column form can be selected according to the actual engineering needs to improve the adaptability and flexibility of the structure.

[0024] 5. Improve the durability and safety of steel components: All steel components are treated with anti-corrosion and fire-proofing, which improves the durability and safety of steel components and extends the service life of the structure. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on the provided drawings without paying creative work.

[0026] Figure 1 The accompanying drawing is a schematic diagram of the prefabricated assembled Rc column-energy dissipation steel beam structure provided by the present invention;

[0027] Figure 2 The accompanying drawing is a schematic diagram of a prefabricated upper column provided by the present invention;

[0028] Figure 3 The accompanying drawing is a schematic diagram of the prefabricated lower column provided by the present invention;

[0029] Figure 4 The accompanying drawing is a schematic diagram of the energy dissipation steel beam provided by the present invention.

[0030] in:

[0031] 1- Prefabricated upper columns;

[0032] 11-upper column hoop; 111-groove; 12-upper column hoop anchor plate; 13-upper column longitudinal reinforcement;

[0033] 2- Prefabricated lower column;

[0034] 21-lower column hoop; 22-lower column hoop anchor plate; 23-lower column longitudinal reinforcement; 24-steel corbel;

[0035] 3-Energy dissipating steel beam;

[0036] 31-energy dissipation section of steel beam; 32-middle section of steel beam; 33-upper flange splicing plate; 34-web splicing plate; 35-lower flange splicing plate. DETAILED DESCRIPTION

[0037] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0038] See attached Figure 1 The embodiment of the present invention discloses a prefabricated assembled Rc column-energy dissipation steel beam structure, comprising:

[0039] A prefabricated upper column 1, wherein an upper column hoop 11 is provided at the bottom of the prefabricated upper column 1, and a bottom edge of the upper column hoop 11 exceeds the bottom surface of the prefabricated upper column 1;

[0040] A prefabricated lower column 2 is provided at the top of the prefabricated lower column 2 with a lower column hoop 21, the top edge of the lower column hoop 21 exceeds the top surface of the prefabricated lower column 2, and the prefabricated lower column 2 and the prefabricated upper column 1 are butt-jointed and welded to each other through the lower column hoop 21 and the upper column hoop 11;

[0041] The energy-absorbing steel beam 3 is connected to the side wall of the lower column hoop 21 of the prefabricated lower column 2 and is used to absorb and dissipate energy under the action of external forces such as earthquakes to improve the seismic performance of the structure.

[0042] The upper column hoop 11 and the lower column hoop 21 are used to connect the energy-absorbing steel beam 3 and ensure the stability and integrity of the entire structure. The energy-absorbing steel beam 3 is made of high-strength steel.

[0043] The prefabricated and assembled Rc column-energy-absorbing steel beam structure provided in this embodiment is suitable for building structures such as office buildings, shopping malls, industrial plants, etc. with large spans, especially for use in high-intensity areas.

[0044] In this embodiment, the upper column hoop 11 and the lower column hoop 21 are made of steel, and the thickness of the upper column hoop 11 and the lower column hoop 21 is 5 mm to 10 mm.

[0045] See attached Figure 2 A column hoop anchor plate 12 is embedded and fixed at the bottom of the prefabricated upper column 1, and a column anchor plate hole is opened on the column hoop anchor plate 12. The end of the upper column longitudinal reinforcement 13 inside the prefabricated upper column 1 passes through the upper column anchor plate hole and is locked with a nut. The upper column hoop 11 is welded and fixed to the outer edge of the upper column hoop anchor plate 12.

[0046] See attached Figure 3 A lower column hoop anchor plate 22 is embedded and fixed on the top of the prefabricated lower column 2, and a lower column anchor plate hole is opened on the lower column hoop anchor plate 22. The end of the lower column longitudinal reinforcement 23 inside the prefabricated lower column 2 passes through the lower column anchor plate hole and is locked with a nut. The lower column hoop 21 is welded and fixed to the outer edge of the lower column hoop anchor plate 22.

[0047] In order to further optimize the above technical solution, the energy-absorbing steel beam 3 is an I-beam. The I-beam has a shape with excellent energy-absorbing characteristics, and other cross-sectional shapes that can effectively absorb and dissipate seismic energy can also be used.

[0048] In order to further optimize the above technical solution, the energy dissipation steel beam 3 and the prefabricated column are connected by welding or bolting. Figure 4 As shown:

[0049] A steel corbel 24 is fixed to the outer wall of the lower column hoop 21, and the energy-absorbing steel beam 3 includes a steel beam energy dissipation section 31 and a steel beam middle section 32. An upper flange splicing plate 33, a web splicing plate 34 and a lower flange splicing plate 35 are passed between the steel beam energy dissipation section 31 and the steel corbel 24, and between the steel beam energy dissipation section 31 and the steel beam middle section 32.

[0050] The upper flange splicing plate 33, the web splicing plate 34 and the lower flange splicing plate 35 are firmly connected to the steel beam middle section 32 through splicing bolts to form a complete steel beam. The steel beam energy dissipation section 31 is designed as a replaceable structure, and its material and size are selected according to the earthquake resistance requirements. When the energy dissipation section is damaged by an earthquake, it can be quickly disassembled and replaced to restore the performance of the steel beam.

[0051] In order to further optimize the above technical solution, the number of the lower column hoop anchor plates 22 inside the lower column hoop 21 is two, and they correspond to the flanges of the steel corbel 24 respectively to ensure the continuity of the bending moment transmission path.

[0052] In one embodiment, the prefabricated upper column 1 and the prefabricated lower column 2 are both prefabricated with high-strength concrete to meet the bearing capacity requirements of a large-span building structure.

[0053] In another embodiment, both the prefabricated upper column 1 and the prefabricated lower column 2 are hollow columns, and the inner cavity of the hollow column is used for post-cast concrete. The pouring process of the post-cast concrete needs to ensure that the concrete fully fills the cavity to improve the overall rigidity and seismic performance of the structure. If a hollow prefabricated column is used, after the column is installed in place, self-compacting micro-expansive concrete is poured into the cavity, and exhaust holes are reserved during pouring.

[0054] In order to further optimize the above technical solution, the bottom edge of the upper column hoop 11 has a groove 111 .

[0055] In order to further optimize the above technical solution, the upper column hoop 11, the lower column hoop 21 and the energy dissipation steel beam 3 are all subjected to anti-corrosion and fire prevention treatment. Moreover, all steel components, including but not limited to the upper column hoop 11, the lower column hoop 21 and the energy dissipation steel beam 3, are required to be subjected to anti-corrosion and fire prevention treatment, or other effective anti-corrosion and fire prevention technical means are adopted to improve the service life and safety of the structure.

[0056] In this embodiment, the anti-corrosion treatment uses hot-dip galvanizing or coating with high-performance anti-corrosion paint to form a dense protective layer to isolate air and moisture and prevent steel from rusting; the fire-proof treatment uses inorganic fire-retardant paint or fire-proof board wrapping to improve the fire resistance of steel components and maintain structural stability during fire.

[0057] In this embodiment, the prefabricated columns can be customized into different specifications and sizes according to specific architectural design requirements to meet the requirements of building structures with larger spans.

[0058] The structure provided in this embodiment is suitable for high-intensity areas and can effectively absorb earthquake energy, reduce the impact of earthquake loads on buildings, and improve the seismic performance of buildings.

[0059] The specific implementation steps of this embodiment are as follows:

[0060] (I) Prefabricated component production

[0061] 1. Prefabricated upper column 1 and prefabricated lower column 2:

[0062] According to the architectural design drawings, determine the size, shape and reinforcement requirements of the prefabricated upper column 1 and the prefabricated lower column 2. Select concrete of appropriate strength grade and pour it in the mold in the factory. Before pouring, install the upper column longitudinal reinforcement 13 and the lower column longitudinal reinforcement 23 in the mold. The specifications, quantity and spacing of the longitudinal reinforcement are strictly determined according to the design calculation to ensure the bearing capacity of the column. For solid columns, directly pour the concrete and vibrate it to make it dense; for hollow columns, reserve the cavity position when pouring concrete, and the shape and size of the cavity should be convenient for subsequent post-pouring concrete operations. After pouring, the concrete is cured for no less than 7 days to ensure that the concrete reaches more than 75% of the design strength.

[0063] On the surface of the prefabricated upper column 1 and the prefabricated lower column 2, positions for embedded parts connected to the upper column hoop 11 and the lower column hoop 12 are reserved. The embedded parts can be made of steel plates or steel bars and are welded or tied to the longitudinal reinforcement in the column to ensure that the positions of the embedded parts are accurate and firm.

[0064] 2. Production of upper column hoop 11 and lower column hoop 21:

[0065] According to the design dimensions, the upper column hoop 11 and the lower column hoop 21 are made by using processes such as steel plate cutting and bending. The thickness, width and other dimensions of the hoop should meet the requirements of connection with the prefabricated column and load bearing. The upper column hoop anchor plate 12 is welded on the inner side of the upper column hoop 11, and the lower column hoop anchor plate 22 is installed on the inner side of the lower column hoop 21. The position of the lower column hoop anchor plate 22 should correspond to the beam flange for subsequent connection with the steel beam. Anchor plate holes are reserved on the anchor plate. The diameter and spacing of the holes are determined according to the specifications of the steel anchor bolts to ensure that the steel anchor bolts can pass through smoothly and be firmly connected.

[0066] The outer surface of the ferrule is treated with anti-corrosion and fire-proofing, which can be done by coating with anti-corrosion paint and fire-retardant paint. The coating thickness should meet the requirements of relevant standards to improve the durability and safety of the ferrule.

[0067] 3. Steel beam production:

[0068] The energy dissipation steel beam 3 includes a steel beam energy dissipation section 31, an upper flange splicing plate 33, a web splicing plate 34, a lower flange splicing plate 35 and a steel beam middle section 32. According to the design requirements, steel materials of appropriate specifications are selected for cutting, welding and other processing and manufacturing. The steel beam energy dissipation section 31 is a replaceable structure. The convenience and reliability of its connection method should be considered during manufacturing. It can be connected to the steel beam middle section 32 by bolt connection.

[0069] The size and shape of the upper flange splicing plate 33, the web splicing plate 34 and the lower flange splicing plate 35 should match the middle section 32 of the steel beam. The splicing bolt holes are reserved on the splicing plates. The position and size of the holes should ensure that the splicing bolts can be smoothly installed and tightened. All steel surfaces of the steel beam are treated with anti-corrosion and fireproofing in the same way as the hoop.

[0070] (II) On-site installation

[0071] 1. Prefabricated column installation:

[0072] Transport the prefabricated upper column 1 and the prefabricated lower column 2 to the construction site, use a crane to hoist the prefabricated lower column to the designed position, adjust the verticality and position of the prefabricated lower column 2, and ensure that the embedded parts of the prefabricated lower column 2 can be accurately connected with the embedded parts of the foundation. Firmly connect the lower column to the foundation by welding or bolting.

[0073] Lift the prefabricated upper column 1, dock the lower end of the prefabricated upper column 1 with the upper end of the prefabricated lower column 2, and adjust the verticality and position of the prefabricated upper column 1 so that the embedded parts of the prefabricated upper column 1 and the embedded parts of the upper column hoop 11 can accurately correspond. Insert the steel anchor bolts into the anchor plate holes of the upper column hoop 11 and the lower column hoop 21, and tighten the nuts to tightly connect the hoop and the prefabricated column. The specifications and quantity of the steel anchor bolts should be determined according to the stress conditions of the column to ensure the reliability of the connection.

[0074] 2. Steel beam installation:

[0075] A steel corbel 24 is welded on the prefabricated lower column 2. The position of the steel corbel 24 should correspond to the designed position of the steel beam. The verticality and horizontality of the steel corbel 24 should be ensured during welding. After welding, the weld is quality inspected to ensure the strength and density of the weld.

[0076] The energy dissipation section 31, upper flange splicing plate 33, web splicing plate 34 and lower flange splicing plate 35 of the energy dissipation steel beam 3 are connected to the middle section 32 of the steel beam through splicing bolts to form a complete steel beam structure. The installation of the steel beam should start from one end. First, place one end of the steel beam on the steel corbel 24, adjust the horizontality and position of the steel beam, and then connect the upper flange splicing plate 33, web splicing plate 34 and lower flange splicing plate 35 of the steel beam to the middle section 32 of the steel beam through splicing bolts. The tightening torque of the splicing bolts should meet the design requirements to ensure that the connection of the steel beam is tight and firm.

[0077] After the steel beam is installed, the connection nodes between the steel beam and the prefabricated column are checked to ensure the tightness and reliability of the connection nodes. For the steel beam energy dissipation section 31, it should be checked whether its connection is firm and whether it can effectively dissipate energy under earthquake action.

[0078] (III) Post-casting of cavity concrete (for hollow columns)

[0079] The upper and lower prefabricated columns can be solid columns or hollow columns. If they are hollow columns, the hollow concrete is poured later. Install the support and formwork in the cavity of the prefabricated upper column 1 and the prefabricated lower column 2. The support and formwork should have sufficient strength and rigidity to withstand the weight and lateral pressure of the poured concrete. The joints of the formwork should be tight to prevent leakage.

[0080] Use concrete with the same or higher strength grade as the precast column for post-cast cavity concrete pouring. Before pouring, clean up the debris in the cavity and wet the cavity surface to improve the bonding strength between the post-cast concrete and the precast column. When pouring, pour and vibrate to make it dense in layers. The thickness of each layer should not exceed 300mm. When vibrating, avoid touching the longitudinal reinforcement and embedded parts of the precast column.

[0081] After pouring, the post-cast concrete shall be cured for no less than 14 days to ensure that the post-cast concrete reaches the designed strength. During the curing period, loads on the structure shall be avoided to prevent affecting the strength development of the post-cast concrete and the integrity of the structure.

[0082] The working principle of the present invention is as follows:

[0083] (I) Principle of prefabrication

[0084] The prefabricated and assembled RC column-energy-consuming steel beam structure of the present invention realizes the rapid construction of the building structure by prefabricating the prefabricated upper column, prefabricated lower column, upper column hoop, lower column hoop, steel beam and other components in the factory, and then transporting them to the construction site for assembly. The prefabricated components are manufactured in the factory using advanced production equipment and processes, which can ensure the quality and precision of the components and reduce on-site construction errors. During on-site assembly, connection methods such as steel bar anchor bolts and splicing bolts are used to tightly connect the various components together to form an integral structure. This prefabricated and assembled principle not only improves construction efficiency and shortens the construction period, but also reduces on-site wet operations and reduces the impact of construction on the environment.

[0085] (II) Principle of seismic energy dissipation

[0086] Under the action of an earthquake, the structure will vibrate. The energy-dissipating steel beam structure of the present invention can effectively dissipate earthquake energy and improve the seismic performance of the structure. The energy-dissipating section of the steel beam is a key part of the structural energy dissipation. It is designed as a replaceable structure. Under the action of an earthquake, the energy-dissipating section of the steel beam yields first and dissipates the earthquake energy through plastic deformation. The material and cross-sectional dimensions of the energy-dissipating section of the steel beam have been carefully designed to dissipate earthquake energy to the maximum extent while ensuring the safety of the structure.

[0087] At the same time, the connection method between the upper column hoop and the lower column hoop and the prefabricated column can also improve the seismic performance of the structure. Under the action of an earthquake, the hoop can restrain the deformation of the prefabricated column, allowing the prefabricated column and the hoop to work together to improve the integrity and stability of the structure. The design of the hoop groove can increase the contact area between the hoop and the prefabricated column and improve the connection strength. In addition, the inner partition of the lower column hoop corresponds to the beam flange, which can effectively transfer the load between the steel beam and the prefabricated column, making the structure more evenly stressed under the action of an earthquake and improving the seismic performance of the structure.

[0088] In this specification, each embodiment is described in a progressive manner, and each embodiment focuses on the differences from other embodiments. The same or similar parts between the embodiments can be referred to each other. For the device disclosed in the embodiment, since it corresponds to the method disclosed in the embodiment, the description is relatively simple, and the relevant parts can be referred to the method part.

[0089] The above description of the disclosed embodiments enables one skilled in the art to implement or use the present invention. Various modifications to these embodiments will be apparent to one skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention will not be limited to the embodiments shown herein, but rather to the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A prefabricated Rc column-energy dissipation steel beam structure, characterized in that: include: A prefabricated upper column (1), wherein an upper column hoop (11) is provided at the bottom of the prefabricated upper column (1), and the bottom edge of the upper column hoop (11) exceeds the bottom surface of the prefabricated upper column (1); A prefabricated lower column (2), wherein a lower column sleeve (21) is provided at the top of the prefabricated lower column (2), the top edge of the lower column sleeve (21) exceeds the top surface of the prefabricated lower column (2), and the prefabricated lower column (2) and the prefabricated upper column (1) are butt-jointed and welded together through the lower column sleeve (21) and the upper column sleeve (11); An energy-absorbing steel beam (3), wherein the energy-absorbing steel beam (3) is connected to the side wall of the lower column hoop (21) of the prefabricated lower column (2).

2. A prefabricated assembled Rc column-energy dissipation steel beam structure according to claim 1, characterized in that: An upper column hoop anchor plate (12) is pre-buried and fixed at the bottom of the prefabricated upper column (1), and an upper column anchor plate hole is opened on the upper column hoop anchor plate (12). The end of the upper column longitudinal reinforcement (13) inside the prefabricated upper column (1) passes through the upper column anchor plate hole, and the upper column hoop anchor plate (12) is locked by a nut, and the upper column hoop (11) is welded and fixed to the outer edge of the upper column hoop anchor plate (12).

3. The prefabricated assembled Rc column-energy dissipation steel beam structure according to claim 1, characterized in that: A lower column hoop anchor plate (22) is pre-buried and fixed at the top of the prefabricated lower column (2), and a lower column anchor plate hole is opened on the lower column hoop anchor plate (22). The end of the lower column longitudinal reinforcement (23) inside the prefabricated lower column (2) passes through the lower column anchor plate hole, and the lower column hoop anchor plate (22) is locked by a nut, and the lower column hoop (21) is welded and fixed to the outer edge of the lower column hoop anchor plate (22).

4. The prefabricated assembled Rc column-energy dissipation steel beam structure according to claim 1, characterized in that: The energy-absorbing steel beam (3) is an I-beam.

5. The prefabricated assembled Rc column-energy dissipation steel beam structure according to claim 4, characterized in that: A steel corbel (24) is fixed to the outer side wall of the lower column hoop (21); the energy-absorbing steel beam (3) comprises a steel beam energy dissipation section (31) and a steel beam middle section (32); an upper flange splicing plate (33), a web splicing plate (34) and a lower flange splicing plate (35) are connected between the steel beam energy dissipation section (31) and the steel corbel (24), and between the steel beam energy dissipation section (31) and the steel beam middle section (32).

6. The prefabricated assembled Rc column-energy dissipation steel beam structure according to claim 5, characterized in that: There are two lower column hoop anchor plates (22) on the inner side of the lower column hoop (21), and they correspond to the flanges of the steel corbels (24) respectively.

7. The prefabricated assembled Rc column-energy dissipation steel beam structure according to claim 1, characterized in that: The prefabricated upper column (1) and the prefabricated lower column (2) are both hollow columns, and the inner cavity of the hollow column is used for post-casting concrete.

8. The prefabricated assembled Rc column-energy dissipation steel beam structure according to claim 1, characterized in that: The prefabricated upper column (1) and the prefabricated lower column (2) are both prefabricated using high-strength concrete.

9. The prefabricated assembled Rc column-energy dissipation steel beam structure according to claim 1, characterized in that: The bottom edge of the upper column hoop (11) has a groove (111).

10. A prefabricated assembled Rc column-energy dissipation steel beam structure according to any one of claims 1 to 9, characterized in that: The upper column hoop (11), the lower column hoop (21) and the energy-absorbing steel beam (3) are all treated with anti-corrosion and fire-proofing.

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