Steel structure energy dissipation beam section

Abstract

The utility model provides a steel structure energy dissipation beam section, which belongs to the technical field of building steel structure energy dissipation and shock absorption, and comprises an energy dissipation beam section body, a steel frame beam and a steel frame column, the energy dissipation beam section body is arranged at the end part of the steel frame beam and is close to the position of a connection node of the steel frame beam and the steel frame column; the two ends of the energy dissipation beam section body are connected with the steel frame beam, and the yield strength of the energy dissipation beam section body is lower than the yield strength of the steel frame beam and the steel frame column. The energy dissipation beam section body is arranged at the end of the steel frame beam, it can be guaranteed that the energy dissipation beam section body firstly enters the yield state under the earthquake action, therefore, earthquake energy is consumed and absorbed, and the earthquake influence of the whole structure is reduced.

Description

TECHNICAL FIELD

[0001] The utility model belongs to building steel structure energy dissipation and shock absorption technical field especially relates to a steel structure energy dissipation beam section. BACKGROUND

[0002] The seismic safety performance requirement of building is increasingly improved, and the measures capable of improving the seismic performance of building are increasingly improved. In addition to the traditional way of improving the seismic performance of building by improving the rigidity of building and increasing the building seismic fortification measures, the way of energy dissipation and consumption is also an effective seismic means for absorbing seismic energy and reducing the damage of earthquake to building during the earthquake, and is more economical and efficient than the traditional way.

[0003] When the multi-storey steel frame structure is subjected to seismic design, the design principle of "strong node and weak component" is generally adopted to ensure that the connecting nodes of beam and column, the main lateral force resisting members such as frame column do not fail first under the action of moderate or rare earthquake, and the relatively secondary components such as frame beam enter the yield state.

[0004] The usual way is to make the beam-column joint into rigid connection or hinged connection, but the current connection mode cannot ensure that the relatively secondary components such as frame beam enter the yield state first under the action of earthquake, so as to consume and absorb the seismic energy. Once the connecting node or frame column is damaged, the structural member cannot play a role even if it is strong, and the building is prone to collapse. CONTENT OF THE UTILITY MODEL

[0005] In view of the defects or deficiencies in the prior art, the utility model provides a steel structure energy dissipation beam section, which can ensure that the yield state is entered first under the action of earthquake, so as to consume and absorb the seismic energy and reduce the seismic influence of the overall structure by setting the energy dissipation beam section body at the end of the steel frame beam.

[0006] In order to achieve the above-mentioned purpose, the utility model adopts the following technical scheme:

[0007] The embodiment of the utility model provides a steel structure energy dissipation beam section, which comprises an energy dissipation beam section body, a steel frame beam and a steel frame column, the energy dissipation beam section body is arranged at the end of the steel frame beam, and is close to the connecting node position of the steel frame beam and the steel frame column.

[0008] The two ends of the energy dissipation beam section body are connected with the steel frame beam, and the yield strength of the energy dissipation beam section body is lower than the yield strength of the steel frame beam and the steel frame column.

[0009] Further, the cross section of the energy dissipation beam section body is the same as the cross section of the steel frame beam, and the end of the beam section body is fixedly connected with the end of the steel frame beam through the connecting plate and the bolt.

[0010] Further, the energy dissipation beam segment body comprises an energy dissipation beam segment web and energy dissipation beam segment flanges, two energy dissipation beam segment flanges are arranged at the top and bottom of the energy dissipation beam segment web and are arranged perpendicularly to the energy dissipation beam segment web.

[0011] Further, the energy dissipation beam segment web is arranged correspondingly to the steel frame beam web, and the energy dissipation beam segment flange is arranged correspondingly to the steel frame beam flange.

[0012] Further, the connecting plate comprises web connecting plates and flange connecting plates, a plurality of web connecting plates are symmetrically arranged at both sides of the connecting position of the energy dissipation beam segment web and the steel frame beam web, and a plurality of flange connecting plates are symmetrically arranged at both sides of the top and bottom of the connecting position of the energy dissipation beam segment flange and the steel frame beam flange.

[0013] Further, the number and performance grade of the web connecting plates and the flange connecting plates and the number and performance grade of the bolts are determined according to the required bearing capacity and stiffness of the design.

[0014] Further, a plurality of bolt holes are arranged on the energy dissipation beam segment web and the steel frame beam web, and the web connecting plate is fixedly connected to the energy dissipation beam segment web and the steel frame beam web through the bolts.

[0015] Further, a plurality of bolt holes are arranged on the energy dissipation beam segment flange and the steel frame beam flange, and the flange connecting plate is fixedly connected to the energy dissipation beam segment flange and the steel frame beam flange through the bolts.

[0016] Further, energy dissipation beam segment stiffening ribs are arranged on both sides of the energy dissipation beam segment web, the longitudinal section of the energy dissipation beam segment stiffening rib is in the shape of a cross, and the top end and the bottom end of the energy dissipation beam segment stiffening rib are fixedly connected to the two energy dissipation beam segment flanges.

[0017] Further, the steel frame beam is fixedly connected to the floor slab through the nails, and the energy dissipation beam segment body is not fixedly connected to the floor slab.

[0018] Compared with the prior art, the energy dissipation beam segment body has the following beneficial effects:

[0019] 1. The energy dissipation beam segment body is arranged at the end of the steel frame beam, can bear the bending moment and the shear force transmitted by the steel frame beam under normal use conditions, guarantees the safety performance of the structure under normal use conditions, enters the yield state earlier than the steel frame beam and the steel frame column under seismic conditions, and dissipates and absorbs the seismic energy through plastic cyclic deformation, so that the seismic influence on the overall structure is reduced.

[0020] 2. The steel frame beam and the energy dissipation beam segment body are connected through the connecting plate and the bolts, and the energy dissipation beam segment body is not connected to the floor slab, so that the energy dissipation beam segment body can be conveniently disassembled and installed after the earthquake, and the rapid repair after the earthquake is realized.

[0021] 3. This utility model provides energy-dissipating beam stiffening ribs on both sides of the web of the energy-dissipating beam segment, and connects the web of the energy-dissipating beam segment with the flange of the energy-dissipating beam segment through the energy-dissipating beam stiffening ribs. The energy-dissipating beam stiffening ribs constrain the web and flange of the energy-dissipating beam segment, improve its local stability, limit its yield deformation mode under seismic action, and prevent local buckling failure. Attached Figure Description

[0022] Figure 1 This is a schematic diagram of the steel energy-dissipating beam segment in an embodiment of this utility model;

[0023] Figure 2 This is a side view of the steel structure energy-dissipating beam segment in an embodiment of this utility model;

[0024] Figure 3 This is a schematic diagram of the energy-dissipating beam segment body structure in an embodiment of this utility model;

[0025] Among them, 1. steel frame column; 2. steel frame beam; 3. web of energy dissipation beam segment; 4. stiffening rib of energy dissipation beam segment; 5. flange of energy dissipation beam segment; 6. flange connecting plate; 7. web connecting plate; 8. floor slab; 9. stud; 10. body of energy dissipation beam segment. Detailed Implementation

[0026] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0027] A typical embodiment of this utility model is as follows: Figure 1 and Figure 2 As shown, a steel structure energy-dissipating beam segment includes an energy-dissipating beam segment body 10, a steel frame column 1, and a steel frame beam 2. The steel frame beam 2 and the steel frame column 1 are both common I-beams on the market. The energy-dissipating beam segment body 10 is located at the end of the steel frame beam 2, near the connection node between the steel frame beam 2 and the steel frame column 1.

[0028] Furthermore, a section of the steel frame beam 2 is cut off near the steel frame column 1 and replaced with an energy-dissipating beam segment 10. The two ends of the energy-dissipating beam segment 10 are connected to the steel frame beam 2. The energy-dissipating beam segment 10 is made of steel with low yield strength. By utilizing the lower yield strength of the energy-dissipating beam segment 10 compared to the steel frame beam 2 and the steel frame column 1, it will enter the yield state before the steel frame beam 2 and the steel frame column 1 under seismic action. The repeated deformation of the energy-dissipating beam segment 10 will dissipate and absorb seismic energy.

[0029] Furthermore, the specific dimensions of the energy-dissipating beam segment 10 are calculated and determined according to its bearing capacity requirements, so that it has sufficient bearing capacity under normal use conditions to support the floor slab, and its bearing capacity under seismic action is lower than that of the steel frame beam 2 and the steel frame column 1, thus ensuring its energy dissipation effect.

[0030] This utility model provides an energy-dissipating beam segment body 10 at the connection node between the steel frame beam 2 and the steel frame column 1. This not only protects the building's frame beams, frame columns, and beam-column joints, preventing damage to the main components and joints, but also consumes and absorbs seismic energy through the plastic cyclic deformation of the energy-dissipating beam segment body 10, thereby reducing the seismic effect on the overall structure.

[0031] The cross-section of the energy-dissipating beam segment 10 is the same as that of the steel frame beam 2, allowing the ends of the energy-dissipating beam segment 10 and the ends of the steel frame beam 2 to be fixedly connected by connecting plates and bolts, facilitating disassembly and replacement. Specifically, for example... Figure 3 As shown, the energy-dissipating beam segment body 10 includes an energy-dissipating beam segment web 3 and an energy-dissipating beam segment flange 5. There are two energy-dissipating beam segment flanges 5, which are respectively fixed to the top and bottom ends of the energy-dissipating beam segment web 3 and are arranged perpendicular to the energy-dissipating beam segment web 3.

[0032] The energy-dissipating beam segment web 3 is correspondingly set with the web of the steel frame beam 2, and the energy-dissipating beam segment flange 5 is correspondingly set with the flange of the steel frame beam 2. The connecting plates include web connecting plates 7 and flange connecting plates 6. Multiple web connecting plates 7 are symmetrically set on both sides of the connection between the energy-dissipating beam segment web 3 and the steel frame beam 2 web. Multiple bolt holes are provided on both the energy-dissipating beam segment web 3 and the steel frame beam 2 web. The web connecting plates 7 are fixedly connected to the energy-dissipating beam segment web 3 and the steel frame beam 2 web respectively by bolts. Multiple flange connecting plates 6 are symmetrically set on the top and bottom sides of the connection between the energy-dissipating beam segment flange 5 and the steel frame beam 2 flange. Multiple bolt holes are provided on both the energy-dissipating beam segment flange 5 and the steel frame beam 2 flange. The flange connecting plates 6 are fixedly connected to the energy-dissipating beam segment flange 5 and the steel frame beam 2 flange respectively by bolts.

[0033] Furthermore, the number of web connecting plates 7 and flange connecting plates 6, as well as the number and performance grade of bolts, are calculated and determined according to the design requirements for bearing capacity and stiffness.

[0034] In use, the steel frame beam 2 is fixedly connected to the floor slab 8 by studs 9, while the energy dissipation beam segment body 10 is not fixedly connected to the floor slab 8. Since the energy dissipation beam segment body 10 is connected to the steel frame beam 2 by bolts to the connecting plate, it is convenient to disassemble and replace the energy dissipation beam segment body 10 when repairing the building after the earthquake, thereby achieving rapid repair after the earthquake.

[0035] Both sides of the web 3 of the energy-dissipating beam segment are provided with energy-dissipating beam segment stiffening ribs 4. The longitudinal section of the energy-dissipating beam segment stiffening ribs 4 is cross-shaped. The top and bottom ends of the energy-dissipating beam segment stiffening ribs 4 are fixedly connected to the flanges 5 of the two energy-dissipating beam segments respectively. The energy-dissipating beam segment stiffening ribs 4 are used to constrain the web 3 and flanges 5 of the energy-dissipating beam segment, improve its local stability, limit its yield deformation mode under seismic action, and prevent local buckling failure.

[0036] Furthermore, the number and size of the stiffening ribs 4 of the energy-dissipating beam segment are determined by calculating the local stability performance of the web 3 and flange 5 of the energy-dissipating beam segment required by the design.

[0037] This embodiment incorporates an energy-dissipating beam segment 10 at the ends of the steel frame beam 2. This directs structural damage under seismic loads onto the energy-dissipating beam segment 10, which then dissipates and absorbs seismic energy through repeated deformation. This protects the building's frame beams, columns, and beam-column joints, preventing damage to key components and joints. Furthermore, the plastic cyclic deformation of the energy-dissipating beam segment 10 reduces the overall seismic load on the structure by absorbing seismic energy. Post-earthquake repairs can be easily disassembled and reassembled, facilitating quick and easy post-earthquake restoration.

[0038] The above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model. Various modifications and variations can be made to this utility model by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A steel structure energy dissipation beam segment, characterized by, The energy dissipation beam section body is arranged at the end of the steel frame beam and close to the position of the connecting joint between the steel frame beam and the steel frame column. The energy dissipation beam section body is connected with the steel frame beam at both ends, and the yield strength of the energy dissipation beam section body is lower than the yield strength of the steel frame beam and the steel frame column. The cross section of the energy dissipation beam section body is the same as the cross section of the steel frame beam, and the end of the beam section body is fixedly connected with the end of the steel frame beam through the connecting plate and the bolt. The energy dissipation beam section body comprises an energy dissipation beam section web and two energy dissipation beam section flanges which are fixedly arranged at the top and bottom of the energy dissipation beam section web and are arranged perpendicularly to the energy dissipation beam section web. The energy dissipation beam section web is arranged correspondingly to the web of the steel frame beam, and the energy dissipation beam section flange is arranged correspondingly to the flange of the steel frame beam.

2. A steel structure energy dissipation beam segment according to claim 1, wherein The connecting plate comprises a web connecting plate and a flange connecting plate, a plurality of web connecting plates are symmetrically arranged at both sides of the connecting position between the energy dissipation beam section web and the web of the steel frame beam, and a plurality of flange connecting plates are symmetrically arranged at both sides of the top and bottom of the connecting position between the energy dissipation beam section flange and the flange of the steel frame beam.

3. A steel structure energy dissipation beam segment as claimed in claim 2, characterized in that, The number of the web connecting plate and the flange connecting plate, the number and the performance grade of the bolt are determined according to the required bearing capacity and stiffness.

4. A steel structure energy dissipation beam segment as claimed in claim 2, wherein, A plurality of bolt holes are arranged on the energy dissipation beam section web and the web of the steel frame beam, and the web connecting plate is fixedly connected with the energy dissipation beam section web and the web of the steel frame beam through the bolt.

5. A steel structural energy dissipation beam segment as recited in claim 2 wherein, A plurality of bolt holes are arranged on the energy dissipation beam section flange and the flange of the steel frame beam, and the flange connecting plate is fixedly connected with the energy dissipation beam section flange and the flange of the steel frame beam through the bolt.

6. A steel structural energy dissipation beam segment as recited in claim 1 wherein, Energy dissipation beam section stiffening ribs are arranged on both sides of the energy dissipation beam section web, the longitudinal cross section of the energy dissipation beam section stiffening rib is cross-shaped, and the top end and the bottom end of the energy dissipation beam section stiffening rib are fixedly connected with the two energy dissipation beam section flanges respectively.

7. A steel structural energy dissipation beam segment as recited in claim 1 wherein, The steel frame beam is fixedly connected with the floor through the bolt, and the energy dissipation beam section body is not fixedly connected with the floor.

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