An assembled steel structure beam-column joint with replaceable arc-shaped energy dissipation plate

Abstract

The present application relates to a kind of assembled steel structure beam-column joint with replaceable arc-shaped energy dissipation plate, mainly including H-shaped steel column, H-shaped steel beam, multiple groups of arc-shaped energy dissipation plate and multiple connectors.The H-shaped steel column of the technical solution is connected with the upper flange and the lower flange of H-shaped steel beam through T-shaped piece and multiple groups of arc-shaped energy dissipation plate connected energy dissipation device to bear bending moment action;The web of H-shaped steel column and H-shaped steel beam is connected through T-shaped piece to bear vertical shear force.Under the action of earthquake, beam component can rotate around upper flange end, thereby effectively reducing the damage to floor;And the post-earthquake damage of node is concentrated in easily detectable and easily replaceable arc-shaped energy dissipation plate, while the main beam column component remains undamaged, greatly improving the post-earthquake recovery ability of node.In addition, the geometric configuration of arc-shaped energy dissipation plate can be flexibly adjusted, so that the mechanical parameters of node have high adjustability.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of civil engineering energy dissipation, in particular to a kind of fabricated steel structure beam-column joint with replaceable arc-shaped energy dissipation plate. BACKGROUND

[0002] Steel frame structure has excellent seismic performance, and is widely used in modern buildings. The beam-column components in traditional steel frame structure are usually connected by welding, bolt-welding hybrid connection or full bolt connection. The above connection methods make the steel frame structure dissipate seismic energy by forming plastic hinge at the end of beam first, which will cause obvious plastic damage and residual deformation of the frame beam itself, and bring difficulties to the post-earthquake repair work of structure.

[0003] In order to improve the seismic performance and post-earthquake recoverability of steel frame beam-column joint, researchers have proposed a kind of fabricated steel structure beam-column joint with replaceable energy dissipation component. By separating the load-bearing and energy dissipation functions of beam-column joint, the damage at the joint after earthquake can be concentrated in the replaceable energy dissipation component, while the main beam-column components remain undamaged, thereby greatly improving the post-earthquake recoverability of beam-column joint. However, the existing fabricated steel structure beam-column joint with replaceable energy dissipation component still has some shortcomings, such as the replaceable energy dissipation component is usually symmetrically arranged at the upper and lower flanges of the beam, and the "opening-closing" mechanism at the beam-column interface under seismic action will cause serious damage to the floor slab, and the presence of the floor slab will also have a significant impact on the mechanical properties of the joint. The replaceable energy dissipation component commonly used in beam-column joint is buckling-restrained steel plate or steel bar, which requires additional lateral restraint components to ensure stable hysteretic performance, which also makes it difficult to directly detect the post-earthquake damage of energy dissipation component. In addition, due to the limitation of the geometric configuration of replaceable energy dissipation component, the mechanical properties of existing beam-column joint cannot be flexibly adjusted, making it difficult to meet different design objectives. SUMMARY

[0004] Based on the problems existing in the existing fabricated steel structure beam-column joint with replaceable energy dissipation component, the present application proposes a kind of fabricated steel structure beam-column joint with replaceable arc-shaped energy dissipation plate.

[0005] The present application is realized by the following technical solutions:

[0006] A kind of fabricated steel structure beam-column joint with replaceable arc-shaped energy dissipation plate, comprising an H-shaped steel column (1), an H-shaped steel beam (2), an arc-shaped energy dissipation plate (3), a first T-shaped piece (4), a second T-shaped piece (5), a third T-shaped piece (6) and a fourth T-shaped piece (7);

[0007] A plurality of the arc-shaped energy dissipation plates (3) are connected as an integral energy dissipation device through the first T-shaped pieces (4) arranged at both ends of the arc-shaped energy dissipation plates (3); the H-shaped steel column (1) is connected with the upper flange of the H-shaped steel beam (2) through the second T-shaped piece (5), the H-shaped steel column (1) is connected with the web of the H-shaped steel beam (2) through the third T-shaped piece (6); the lower flange of the H-shaped steel beam (2) is welded with the fourth T-shaped piece (7) as a whole, and the H-shaped steel column (1) and the lower flange of the H-shaped steel beam (2) are connected through the first T-shaped pieces (4) at both ends of the arc-shaped energy dissipation plates (3).

[0008] In a preferred embodiment: the H-shaped steel column (1) is welded with a horizontal stiffening plate at the height position of the upper and lower flanges of the steel beam (2), and the right flange of the H-shaped steel column (1) is provided with a first circular bolt hole in the vicinity of the stiffening plate.

[0009] In a preferred embodiment: the upper flange of the H-shaped steel beam (2) is provided with a second circular bolt hole at the left end, and the web is provided with an oblong hole at the left end.

[0010] In a preferred embodiment: the H-shaped steel column (1) and the H-shaped steel beam (2) are made of ordinary strength steel or high strength steel.

[0011] In a preferred embodiment: the H-shaped steel column (1) and the H-shaped steel beam (2) have a certain gap.

[0012] In a preferred embodiment: the arc-shaped energy dissipation plate (3) is provided with a circular hole at both ends, and the arc-shaped energy dissipation plates (3) in the same plane are arranged in an O shape, and the plane where the arc-shaped energy dissipation plates (3) are located is parallel to the plane where the flanges of the H-shaped steel beam (2) are located.

[0013] In a preferred embodiment: the first T-shaped piece (4), the second T-shaped piece (5), the third T-shaped piece (6) and the fourth T-shaped piece (7) are all provided with a third circular bolt hole.

[0014] In a preferred embodiment: the connecting bolts of the flanges of the first T-shaped piece (4) are pre-tightened, and the web connecting bolts are not pre-tightened; the connecting bolts of the flanges and the web of the second T-shaped piece (5) are all pre-tightened; the connecting bolts of the flanges of the third T-shaped piece (6) are pre-tightened, and the web connecting bolts are not pre-tightened; the connecting bolts of the flanges of the fourth T-shaped piece (7) are pre-tightened.

[0015] Compared with the prior art, the beneficial effects of the present application are:

[0016] The present application provides a fabricated steel structure beam-column joint with replaceable arc-shaped energy dissipation plates, all the components assembled on the construction site are connected by bolts, which can avoid the adverse effects of welding.

[0017] The application provides an assembled steel structure beam-column joint with replaceable arc-shaped energy dissipation plates, after an earthquake, damage of the beam-column joint is concentrated in the replaceable arc-shaped energy dissipation plates, and the main beam-column component always remains elastic, so that post-earthquake repair cost of the joint is greatly reduced. By disassembling bolts and replacing the damaged arc-shaped energy dissipation plates, normal use function of the joint can be quickly restored.

[0018] The application provides an assembled steel structure beam-column joint with replaceable arc-shaped energy dissipation plates, the arc-shaped energy dissipation plates can have stable hysteresis performance without additional lateral restraint devices, and the hysteresis performance can be flexibly adjusted by changing the geometric configuration thereof. Geometric configuration of the existing buckling-restrained energy dissipation component is generally fixed, so that the hysteresis performance cannot be flexibly adjusted.

[0019] The application provides an assembled steel structure beam-column joint with replaceable arc-shaped energy dissipation plates, since the arc-shaped energy dissipation plates do not need additional lateral restraint devices, post-earthquake damage detection is very convenient.

[0020] The application provides an assembled steel structure beam-column joint with replaceable arc-shaped energy dissipation plates, under the action of an earthquake, the H-shaped steel beam in the beam-column joint rotates around the end of the upper flange of the steel beam, and damage of the floor can be effectively reduced. BRIEF DESCRIPTION OF DRAWINGS

[0021] Figure 1 It is a whole schematic view of the application;

[0022] Figure 2 It is a disassembled schematic view of the application;

[0023] Figure 3 It is an elevation view of the application;

[0024] Figure 4 It is a right side view of the application;

[0025] Figure 5 It is a top view of the whole energy dissipation device of the application;

[0026] Figure 6 It is a side view of the whole energy dissipation device of the application;

[0027] The H-shaped steel column 1, the H-shaped steel beam 2, the arc-shaped energy dissipation plate 3, the first T-shaped piece 4, the second T-shaped piece 5, the third T-shaped piece 6 and the fourth T-shaped piece 7. DETAILED DESCRIPTION

[0028] The technical solution of the present invention is further illustrated below through the accompanying drawings and specific embodiments. Obviously, the embodiments described are only some of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making any creative efforts are within the scope of protection of the present invention.

[0029] In the description of the present invention, it should be understood that the terms "left", "right", "up", "down", etc. indicate directions or positional relationships based on the attached Figure 1 and attached Figure 2 The orientation or positional relationship shown is only for the convenience of describing the present invention and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operate in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0030] like Figures 1-6 As shown, this embodiment provides an assembled steel structure beam-column node with a replaceable curved energy absorption plate, including an H-shaped steel column 1, an H-shaped steel beam 2, a curved energy absorption plate 3, a first T-shaped member 4, a second T-shaped member 5, a third T-shaped member 6 and a fourth T-shaped member 7.

[0031] The H-shaped steel column 1 and the H-shaped steel beam 2 can be made of ordinary strength steel, such as Q355 steel, or high strength steel, such as Q460 and Q690 steel.

[0032] The H-shaped steel column 1 is welded with horizontal stiffening plates at the height of the upper and lower flanges of the H-shaped steel beam 2. A first circular bolt hole is opened in the area near the stiffening plate on the right flange of the H-shaped steel column 1, and the hole diameter is 1 to 2 mm larger than the diameter of the connecting bolt.

[0033] A second circular bolt hole is opened at the left end of the upper flange of the H-shaped steel beam 2, and the hole diameter is 1 to 2 mm larger than the diameter of the connecting bolt; an oblong hole is opened at the left end of the web, and the hole diameter should be as close as possible to the bolt diameter, and the hole length is determined according to the rotational displacement requirements of the H-shaped steel beam 2.

[0034] There is a certain gap between the H-shaped steel column 1 and the H-shaped steel beam 2. This gap should ensure that the lower flange of the H-shaped steel beam 2 will not contact the flange of the H-shaped steel column 1 during the rotation of the H-shaped steel beam 2 around the left end of the upper flange.

[0035] The curved energy dissipation plates 3 are made from steel with a low yield point, such as Q235, LY100, or LY225 steel. They have circular holes at both ends, with diameters as close as possible to the diameter of the connecting bolts. The two curved energy dissipation plates 3 in the same plane are arranged in an O-shape, with the plane of the two curved energy dissipation plates 3 parallel to the plane of the flange of the H-shaped steel beam 2. The two curved energy dissipation plates 3 in the same plane form an energy dissipation plate group. This embodiment illustrates two energy dissipation plate groups; the actual number can be determined based on design requirements.

[0036] The first T-shaped piece 4, the second T-shaped piece 5, the third T-shaped piece 6 and the fourth T-shaped piece 7 are welded by two steel plates, and each is provided with a third circular bolt hole. The flange bolt hole diameter of the first T-shaped piece 4 is 1-2mm larger than the diameter of the connecting bolt, and the web bolt hole diameter should be as close to the diameter of the connecting bolt as possible; the bolt hole diameter of the flange and the web of the second T-shaped piece 5 is 1-2mm larger than the diameter of the corresponding connecting bolt; the flange bolt hole diameter of the third T-shaped piece 6 is 1-2mm larger than the diameter of the connecting bolt, and the web bolt hole diameter should be as close to the diameter of the connecting bolt as possible; the flange bolt hole diameter of the fourth T-shaped piece 7 is 1-2mm larger than the diameter of the connecting bolt.

[0037] The connecting bolt of the flange of the first T-shaped piece 4 is pre-tightened, and the web connecting bolt is not pre-tightened; the connecting bolts of the flange and the web of the second T-shaped piece 5 are pre-tightened; the connecting bolt of the flange of the third T-shaped piece 6 is pre-tightened, and the web connecting bolt is not pre-tightened; the connecting bolt of the flange of the fourth T-shaped piece 7 is pre-tightened. The pre-tightening force value of the connecting bolt is determined according to the current specification.

[0038] The assembling process of the assembled steel structure beam-column joint with replaceable arc-shaped energy dissipation plate provided in the embodiment is as follows:

[0039] Step one: weld the H-shaped steel beam 2 and the fourth T-shaped piece 7 into a whole;

[0040] Step two: connect the arc-shaped energy dissipation plate 3 and the first T-shaped piece 4 at both ends by bolts;

[0041] Step three: connect the H-shaped steel column 1, the upper flange of the H-shaped steel beam 2 and the second T-shaped piece 5 by bolts;

[0042] Step four: connect the H-shaped steel column 1, the web of the H-shaped steel beam 2 and the third T-shaped piece 6 by bolts;

[0043] Step five: connect the fourth T-shaped piece 7 welded with the lower flange of the H-shaped steel column 1 and the first T-shaped piece 4 at both ends of the arc-shaped energy dissipation plate 3 by bolts.

[0044] Thus, the assembling work of the present application is completed.

[0045] The above is only one specific embodiment of the present application, but the design concept of the present application is not limited thereto, and any non-essential modification of the present application using this concept shall be deemed as an act of infringing the protection scope of the present application.

Claims

1. An assembled steel structure beam-column joint with a replaceable curved energy dissipation plate, characterized by: It comprises an H-shaped steel column (1), an H-shaped steel beam (2), an arc-shaped energy-absorbing plate (3), a first T-shaped member (4), a second T-shaped member (5), a third T-shaped member (6) and a fourth T-shaped member (7); Multiple groups of the arc-shaped energy dissipation plates (3) are connected to form an integral energy dissipation device through first T-shaped pieces (4) arranged at both ends of the arc-shaped energy dissipation plates (3); the H-shaped steel column (1) is connected to the upper flange of the H-shaped steel beam (2) through the second T-shaped piece (5), and the H-shaped steel column (1) is connected to the web of the H-shaped steel beam (2) through the third T-shaped piece (6); the lower flange of the H-shaped steel beam (2) is welded to the fourth T-shaped piece (7) to form a whole, and the H-shaped steel column (1) and the lower flange of the H-shaped steel beam (2) are connected through the first T-shaped pieces (4) at both ends of the arc-shaped energy dissipation plates (3); the arc-shaped energy dissipation device Circular holes are opened at both ends of the energy plate (3), and the arc-shaped energy-absorbing plates (3) in the same plane are arranged in an O shape, and the plane where the arc-shaped energy-absorbing plates (3) are located is parallel to the plane where the flange of the H-shaped steel beam (2) is located; the connecting bolts of the flange of the first T-shaped member (4) apply a pre-tightening force, and the web connecting bolts do not apply a pre-tightening force; the connecting bolts of the flange and the web of the second T-shaped member (5) both apply a pre-tightening force; the connecting bolts of the flange of the third T-shaped member (6) apply a pre-tightening force, and the web connecting bolts do not apply a pre-tightening force; the connecting bolts of the flange of the fourth T-shaped member (7) apply a pre-tightening force.

2. The assembled steel structure beam-column node with replaceable curved energy dissipation plates according to claim 1, characterized in that: The H-shaped steel column (1) is welded with horizontal stiffening plates at the height of the upper and lower flanges of the H-shaped steel beam (2), and a first circular bolt hole is opened in the area near the stiffening plates on the right flange of the H-shaped steel column (1).

3. The assembled steel structure beam-column node with replaceable curved energy dissipation plates according to claim 1, characterized in that: A second circular bolt hole is provided at the left end of the upper flange of the H-shaped steel beam (2), and an oblong hole is provided at the left end of the web.

4. The assembled steel structure beam-column joint with replaceable curved energy dissipation plates according to claim 1, characterized in that: The H-shaped steel column (1) and the H-shaped steel beam (2) are made of ordinary strength steel or high strength steel.

5. The assembled steel structure beam-column node with replaceable curved energy dissipation plates according to claim 1, characterized in that: There is a certain gap between the H-shaped steel column (1) and the H-shaped steel beam (2).

6. The assembled steel structure beam-column joint with replaceable curved energy dissipation plates according to claim 1, characterized in that: The first T-shaped piece (4), the second T-shaped piece (5), the third T-shaped piece (6) and the fourth T-shaped piece (7) are all provided with a third circular bolt hole.

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