A replaceable graded energy dissipation beam segment placed at the inflection point of vertical load action

Abstract

The patent relates to a replaceable hierarchical energy dissipation beam segment placed at the inflection point of vertical load action, and belongs to the technical field of civil engineering. The replaceable hierarchical energy dissipation beam segment comprises an energy dissipation plate, a catenary rod, a pin shaft, an ear plate and a reinforcing plate. The energy dissipation plate can be in the shape of a strip, a rectangle, a dog bone, a dumbbell or an I-beam. High-strength bolts are used to connect the components. The advantages are that the thin web of the profiled steel beam can be effectively prevented from buckling by connecting the reinforcing plate and the ear plate thereon; the hierarchical energy dissipation of the energy dissipation plate and the catenary rod in the energy dissipation segment solves the problem of the damage of the beam-column joint under earthquake, and enhances the bearing capacity and energy dissipation capacity. Moreover, the components are connected by bolts, and when damaged, the subsequent maintenance can be replaced, thereby reducing the cost.

Description

Technical Field

[0001] This invention relates to a replaceable, graded energy-dissipating beam segment, belonging to the field of civil engineering technology. Background Technology

[0002] With the development of the construction industry, the application of ordinary steel frame beams has become increasingly widespread. However, steel frame beams currently suffer from drawbacks such as high maintenance costs and susceptibility to deformation. To address these shortcomings, replaceable graded energy-dissipating beam segments have been proposed and have seen some application and development in recent years. Therefore, research on replaceable graded energy-dissipating beam segments is becoming increasingly important. While there are many studies on the seismic performance and collapse characteristics of energy-dissipating beam segments, experimental research on replaceable graded energy-dissipating beam segments is scarce.

[0003] Previous seismic design goals focused on post-earthquake repairability. This approach resulted in slow recovery and increased risk of overall structural failure, leading to significant economic losses. Current seismic design goals are increasingly shifting towards enabling rapid post-earthquake restoration of functionality, and even the replacement of some components. Summary of the Invention

[0004] The purpose of this invention is to protect beam-column joints from damage by proposing a replaceable graded energy-dissipating beam segment compression specimen placed at the inflection point of vertical load. It has the advantages of strong overall stability, strong seismic performance, post-earthquake replaceability, and economic practicality.

[0005] Using the above technical solution, the gain effect of this patent is as follows: (1) Graded energy consumption provides more safety redundancy for the structure; (2) Components are replaceable. When subjected to seismic loads, the structure does not fail; only the damaged components need to be replaced. Attached Figure Description

[0006] Figure 1 Overall diagram of the energy-dissipating beam segment structure

[0007] Figure 2 Cross-sectional view of the energy-dissipating beam segment structure

[0008] Figure 3 Top view of the energy dissipation plate component near the upper flange.

[0009] Figure 4 Plan view of the catenary member near the upper flange

[0010] Figure 5 Top view of the catenary member near the upper flange

[0011] Figure 6 A plan view of the connection between the middle reinforcement plate and the ear plate.

[0012] Figure 7Top view of the connection between the middle reinforced plate and the ear plate

[0013] Figure 8 Plan view of the catenary member near the lower flange

[0014] Figure 9 Top view of the catenary member near the lower flange

[0015] Figure 10 Top view of the energy dissipation plate component near the upper flange. Specific implementation methods

[0016] To achieve the above objectives, this invention employs the following technical solution: A replaceable graded energy-dissipating beam segment under pressure is characterized in that it includes an energy-dissipating plate, a catenary rod, a pin, an ear plate, and a reinforcing plate. The energy-dissipating plate is placed at the flange, the reinforcing plate is placed at the web, the catenary rod is placed inside the beam flange, and the components are connected as a whole by high-strength bolts.

[0017] The replaceable, graded energy-dissipating beam segment is an I-beam.

[0018] Further, reinforcing plates (9) and (10) are installed and connected to ear plates (11) and (12) respectively, and then connected to the web plate through pins (13);

[0019] Furthermore, the ear plates (4) and (5) are respectively installed on the inner side of the upper flange and connected to the catenary (2) and catenary (3) respectively through pins (6) and (7), and then connected to a whole through pins (8);

[0020] Furthermore, ear plates (13) and (14) are respectively installed to the inner side of the lower flange, and connected to the catenary (18) and catenary (19) respectively via pins (15) and (16), and then connected to a whole unit via pin (17).

[0021] Furthermore, energy-consuming plates (1) and (20) are installed respectively and fixed to the upper and lower sides of the I-beam flange with high-strength bolts.

[0022] Furthermore, the shape of the energy-consuming plate can be strip-shaped, rectangular, dog-bone-shaped, dumbbell-shaped, or I-shaped.

[0023] The catenary is rotatable. When the upper side is under pressure, and the energy dissipation plate (1) reaches 30% of its yield strength, it stops working, the catenary is pulled flat, and the upper catenary begins to bear the load.

[0024] The purpose of adopting the above-mentioned further scheme is to achieve the effect of graded energy consumption and to make post-earthquake damage replaceable.

Claims

1. A replaceable graded energy-dissipating beam segment placed at the inflection point of vertical load, comprising an energy-dissipating plate (1), an energy-dissipating plate (21), a catenary (2), a catenary (3), a catenary (19) and a catenary (20), an ear plate (4), an ear plate (5), an ear plate (11), an ear plate (12), an ear plate (14), an ear plate (15), a pin (6), a pin (7), a pin (8), a pin (13), a pin (16), a pin (17), a pin (18), a reinforcing plate (9), and a reinforcing plate (10), characterized in that: The energy-dissipating plate is placed at the flange, the reinforcing plate is placed at the web, and the catenary is placed inside the beam flange. All components are connected into a whole by high-strength bolts.

2. A replaceable, graded energy-dissipating beam segment placed at the inflection point of vertical load application according to claim 1, characterized in that: The energy dissipation plate (1) is connected to the flanges on both sides of the beam by high-strength bolts. The shape of the energy dissipation plate can be strip-shaped, rectangular, dog bone-shaped, dumbbell-shaped or I-shaped. The energy dissipation plate is weaker than the flange plate.

3. A replaceable, graded energy-dissipating beam segment placed at the inflection point of vertical load according to claim 1, characterized in that: The catenary (2) and catenary (3) are connected by a pin (8), and the connected catenary can rotate, and its rotation angle can be obtained by calculation.

4. The catenary rod according to claim 3 is connected by a pin (8) and then connected to the web plate by pins (6) and (7) respectively, and placed on the inner side of the flange.

5. A replaceable graded energy-dissipating beam segment placed at the inflection point of vertical load according to claim 1; the left reinforcing plate (9) is made of rectangular steel plate and ear plate (11) spliced ​​together, and the right reinforcing plate (10) is made of rectangular steel plate and ear plate (12) spliced ​​together, and then connected by pin (13).

6. A replaceable, graded energy-dissipating beam segment placed at the inflection point of vertical load according to claim 1, characterized in that: The catenary (19) and catenary (20) are connected by a pin (18), and the connected catenary can rotate, the rotation angle of which can be obtained by calculation.

7. The catenary rod according to claim 6 is connected by a pin (18), and then connected to the web plate by pins (16) and pins (17) respectively, and placed on the inner side of the flange.

8. A replaceable, graded energy-dissipating beam segment placed at the inflection point of vertical load according to claim 1, characterized in that: The energy-consuming plate (21) is connected to the flanges on both sides of the beam by high-strength bolts.

9. A replaceable, graded energy-dissipating beam segment placed at the inflection point of vertical load according to claim 1, characterized in that: The energy dissipation panel (1) and the catenary rods (2) and (3) can be replaced after being damaged by an earthquake.

10. A replaceable, graded energy-dissipating beam segment placed at the inflection point of vertical load according to claim 1, characterized in that: Placed at the inflection point of the component, the load is initially borne by the energy dissipation plate (1). When it reaches a certain proportion of its yield strength, the load is then borne by the catenary rod (2) (3), thus achieving graded energy dissipation.

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