CN110067426B - A seismic steel structure with anti-buckling braces - Google Patents

Abstract

The invention discloses an anti-seismic steel structure provided with anti-buckling supports. A plurality of connecting seats are fixed on the steel beams at equal intervals along the length direction of the steel beams. Below the seat, the anti-buckling support assembly includes a first anti-buckling support and a second anti-buckling support, the first anti-buckling support and the second anti-buckling support are respectively connected with the connecting seat, and the first and second anti-buckling support are located at the same In the plane, the first anti-buckling bracing and the second anti-buckling bracing are preset with an acute angle, and multiple anti-buckling bracing components are used to support the steel beam. The steel beam is connected with other steel structural members. When an earthquake occurs, the first The inner core steel core of the anti-buckling bracing and the second anti-buckling bracing yields and consumes seismic energy through hysteretic deformation, thereby reducing the transmission of seismic energy to the steel beam and improving the seismic effect of the entire steel structure.

Description

A seismic steel structure with anti-buckling braces

technical field

The invention relates to the technical field of steel structures, in particular to an anti-seismic steel structure provided with anti-buckling supports.

Background technique

Steel structures are often used as the main body in modern buildings. Steel structures have the advantages of strong earthquake resistance and convenient construction. In large cantilever structures, steel structures are often used as the main body. One of the difficulties in designing large cantilever structures is how to ensure that The large cantilever structure has a good seismic effect. The existing large cantilever structure has a poor seismic effect. The anti-buckling support is a new type of seismic structure. The application of the anti-buckling support to the steel structure is bound to improve the seismic performance of the steel structure. Therefore, how to effectively combine the anti-buckling bracing with the steel structure is a technical problem that needs to be solved now.

SUMMARY OF THE INVENTION

In order to solve the technical problems existing in the background art, the present invention proposes an anti-seismic steel structure provided with anti-buckling supports.

A seismic steel structure provided with anti-buckling supports provided by the present invention includes steel beams, multiple connecting seats and multiple anti-buckling support components;

A plurality of connecting seats are fixed on the steel beam at equal intervals along the length direction of the steel beam;

The plurality of anti-buckling support assemblies are respectively connected with the plurality of connection seats and are located under the connection seats. The anti-buckling support assemblies include a first anti-buckling support and a second anti-buckling support. One end of the first anti-buckling support is connected to the connecting seat, and the second anti-buckling support One end of the buckling support is connected to the connecting seat, the first anti-buckling support and the second anti-buckling support are located in the same plane, and the first and second anti-buckling supports are preset with an acute angle.

Preferably, the connecting seat is provided with a first sliding cavity and a second sliding cavity;

It also includes a first damping mechanism, the first damping mechanism includes a first sliding rod, a first piston, a first spring, a second spring and oil, and the first sliding rod is located in the first sliding cavity and extends to the first sliding rod. The outside of the cavity is connected with the first anti-buckling support, the first piston is fixed in the middle of the first sliding rod, the first piston is slidably matched with the inner wall of the first sliding cavity, the first piston is provided with a first damping hole, and the first spring is sleeved on The first sliding rod is located on the first side of the first piston, the two ends of the first spring are respectively abutted on the first piston and the inner wall of the first sliding cavity, and the second spring is sleeved on the first sliding rod and located on the first piston On the second side, both ends of the second spring abut against the first piston and the inner wall of the first sliding chamber, the oil is filled in the first sliding chamber, and when the first damping mechanism is in a free state, the first piston is located at the middle of the first sliding cavity;

Also includes a second damping mechanism, the second damping mechanism includes a second sliding rod, a second piston, a third spring, a fourth spring and oil, the second sliding rod is located in the second sliding cavity and extends to the second sliding rod. The outside of the cavity is connected with the second anti-buckling support, the second piston is fixed in the middle of the second sliding rod, the second piston is slidably matched with the inner wall of the second sliding cavity, the second piston is provided with a second damping hole, and the third spring is sleeved on The second sliding rod is located on the first side of the second piston, the two ends of the second spring abut against the second piston and the inner wall of the second sliding cavity respectively, and the fourth spring is sleeved on the second sliding rod and located on the second piston On the second side, both ends of the fourth spring abut against the second piston and the inner wall of the second sliding chamber, the oil is filled in the second sliding chamber, and the second piston is located in the free state of the second damping mechanism. The middle of the second sliding cavity.

Preferably, the first sliding rod is hinged with the first anti-buckling support, and the second sliding rod is hinged with the second anti-buckling support.

Preferably, a third sliding cavity is provided on the side of the connecting seat away from the anti-buckling support assembly;

Also includes a third damping mechanism, the third damping mechanism includes a third sliding rod, a third piston, a fifth spring, a sixth spring and oil, the third sliding rod is located in the third sliding cavity and extends to the second sliding rod. Outside the cavity, the third piston is fixed in the middle of the third sliding rod, the third piston is slidably matched with the inner wall of the third sliding cavity, the third piston is provided with a third damping hole, and the fifth spring is sleeved on the third sliding rod and is located in the third sliding rod. On the first side of the third piston, both ends of the fifth spring abut against the third piston and the inner wall of the third sliding chamber respectively, the sixth spring is sleeved on the third sliding rod and is located on the second side of the third piston, the sixth spring Both ends abut against the third piston and the inner wall of the third sliding chamber, the oil is filled in the third sliding chamber, and the third piston is located in the middle of the third sliding chamber when the third damping mechanism is free.

Preferably, an elastic connecting piece is further included, and two ends of the elastic connecting piece are respectively connected with the middle part of the first anti-buckling support and the middle part of the second anti-buckling support.

In the present invention, in the proposed seismic steel structure provided with anti-buckling bracing, a plurality of anti-buckling bracing assemblies are used to support the steel beams, and the steel beams are connected with other steel structural components, specifically, in each anti-buckling bracing assembly The first anti-buckling bracing and the second anti-buckling bracing support the connecting seat, which in turn supports the steel beam. The first anti-buckling bracing and the second anti-buckling bracing form an acute angle, making the structure more stable. The inner core steel core of the first anti-buckling bracing and the second anti-buckling bracing yields and consumes seismic energy through hysteretic deformation, thereby reducing the transmission of seismic energy to the steel beam and improving the seismic effect of the entire steel structure.

Description of drawings

1 is a schematic structural diagram of a seismic steel structure provided with anti-buckling supports proposed by the present invention;

FIG. 2 is a cross-sectional view of the connection seat proposed by the present invention.

Detailed ways

As shown in Figures 1-2, Figure 1 is a schematic structural diagram of a seismic steel structure provided with anti-buckling supports proposed by the present invention, and Figure 2 is a cross-sectional view of the connecting seat proposed by the present invention.

Referring to FIG. 1 , a seismic steel structure provided with anti-buckling supports proposed by the present invention includes a steel beam 1, a plurality of connecting seats 2 and a plurality of anti-buckling support components;

The steel beam 1 is connected with other steel structural members. Only a small section of the steel beam 1 is shown in FIG. 1 , and a plurality of connecting seats 2 are fixed on the steel beam 1 at equal intervals along the length of the steel beam 1 . Only shown in FIG. 1 Two connection bases 2;

A plurality of anti-buckling support assemblies are respectively connected with and located under the plurality of connection bases 2, the anti-buckling support assemblies are used to support the steel beam 1, and the anti-buckling support assemblies include a first anti-buckling support 31 and a second anti-buckling support 32 , one end of the first anti-buckling support 31 is connected to the connecting base 2, one end of the second anti-buckling support 32 is connected to the connecting base 2, the first anti-buckling support 31 and the second anti-buckling support 32 are located in the same plane, the first anti-buckling support 31 and the second anti-buckling support 32 are preset with an acute angle, so that the structure is more stable. The specific structures of the first anti-buckling support 31 and the second anti-buckling support 32 are in the prior art. The inner core steel core of the support 31 and the second anti-buckling support 32 yields and consumes seismic energy through hysteretic deformation, thereby reducing the transmission of seismic energy to the steel beam 1 and improving the seismic effect of the entire steel structure.

2 , in order to improve the anti-seismic effect, in this embodiment, the connecting seat 2 is provided with a first sliding cavity and a second sliding cavity, the cross-sections of the first sliding cavity and the second sliding cavity are circular, and the axis of the first sliding cavity and the The axis of the second sliding cavity is at an acute angle;

Also includes a first damping mechanism, the first damping mechanism includes a first sliding rod 41, a first piston 42, a first spring 43 and a second spring 44 and oil, the oil is filled in the first sliding cavity, The first sliding rod 41 is located in the first sliding cavity and extends to the outside of the first sliding cavity and is connected to the first anti-buckling support 31 , the first piston 42 is fixed in the middle of the first sliding rod 41 , and the first piston 42 is connected to the first The inner wall of the sliding cavity is slidably fitted, thereby dividing the first sliding cavity into two chambers. The first piston 42 is provided with a first damping hole, and the oil can flow back and forth in the two chambers through the first damping hole. The first spring 43 is sleeved on the first sliding rod 41 and is located on the first side of the first piston 42. The two ends of the first spring 43 are respectively abutted on the first piston 42 and the inner wall of the first sliding chamber. The second spring 44 is sleeved Set on the first sliding rod 41 and located on the second side of the first piston 42, the two ends of the second spring 44 abut on the first piston 42 and the inner wall of the first sliding cavity respectively. In the free state of the first damping mechanism, the first The piston 42 is located in the middle of the first sliding cavity, the end of the first sliding rod 41 away from the first anti-buckling support 31 is at a distance from the bottom of the first sliding cavity, and the first sliding rod 41 is affected by the first spring 43 and the second spring during the movement The elastic force of 44 inhibits the movement of the first sliding rod 41;

Also includes a second damping mechanism, the second damping mechanism includes a second sliding rod 51, a second piston 52, a third spring 53 and a fourth spring 54 and oil, the oil is filled in the second sliding cavity, The second sliding rod 51 is located in the second sliding cavity and extends to the outside of the second sliding cavity to be connected with the second anti-buckling support 32 , the second piston 52 is fixed in the middle of the second sliding rod 51 , and the second piston 52 is connected to the second The inner wall of the sliding cavity is slidably fitted, thereby dividing the second sliding cavity into two chambers. The second piston 52 is provided with a second damping hole, and the oil can flow back and forth in the two chambers through the second damping hole. The third spring 53 is sleeved on the second sliding rod 51 and is located on the first side of the second piston 52. Both ends of the third spring 53 abut on the second piston 52 and the inner wall of the second sliding cavity respectively. The fourth spring 54 is sleeved Set on the second sliding rod 51 and located on the second side of the second piston 52, the two ends of the fourth spring 54 abut against the second piston 52 and the inner wall of the second sliding cavity respectively. In the free state of the second damping mechanism, the second The piston 52 is located in the middle of the second sliding cavity, the end of the second sliding rod 51 away from the second anti-buckling support 32 is at a distance from the bottom of the second sliding cavity, and the second sliding rod 51 is affected by the third spring 53 and the fourth spring during the movement The elastic force of 54 inhibits the movement of the second sliding rod 51 .

When an earthquake occurs, the seismic energy is transmitted to the first sliding rod 41 through the first anti-buckling support 31, so that the first sliding rod 41 slides in the first sliding cavity, and the first sliding rod 41 drives the first piston 42 to slide. The sliding of the first piston 42 is restrained by the first spring 43, the second spring 44 and the oil, the sliding speed of the first piston 42 is small, and the energy transmitted by the first anti-buckling support 31 is consumed by the sliding of the first piston 42 , the energy consumption of the first anti-buckling support 31 and the first damping mechanism is realized twice, ensuring that less seismic energy is transmitted to the steel beam 1; similarly, the seismic energy is transmitted to the second sliding plate through the second anti-buckling support 32 rod 51, so that the second sliding rod 51 slides in the second sliding cavity, the second sliding rod 51 drives the second piston 52 to slide, and the second piston 52 receives the third spring 53, the fourth spring 54 and the The oil is inhibited, the sliding speed of the second piston 52 is small, the energy transmitted by the second anti-buckling support 32 is consumed by the sliding of the second piston 52, and the energy of the second anti-buckling support 32 and the second damping mechanism is realized twice. consumption, ensuring that less seismic energy is transmitted to the steel beam 1; thus ensuring that the steel structural members connected with the steel beam 1 remain stable and not damaged when an earthquake occurs.

Further, the first sliding rod 41 is hinged with the first anti-buckling support 31, the first sliding rod 41 and the first anti-buckling support 31 can rotate relative to each other, and the rotation of the first anti-buckling support 31 caused by the earthquake will not be transmitted to the first sliding rod. On the rod 41, that is, the rotation of the first anti-buckling support 31 will not cause the first sliding rod 41 to rotate, so the hinged connection between the first sliding rod 41 and the first anti-buckling support 31 further consumes seismic energy; The second anti-buckling support 32 is hinged, the second sliding rod 51 and the second anti-buckling support 32 can rotate relative to each other, and the rotation of the second anti-buckling support 32 caused by the earthquake will not be transmitted to the second sliding rod 51, that is, the second anti-buckling support 32 The rotation of the support 32 does not cause the second sliding rod 51 to rotate, so the hinged connection of the second sliding rod 51 with the second anti-buckling support 32 further consumes seismic energy.

Referring to FIG. 2 , the external steel structural member in this embodiment is directly connected to the connecting seat 2, and the specific design is as follows. The connecting seat 2 is provided with a third sliding cavity on the side away from the anti-buckling support assembly;

Also includes a third damping mechanism, the third damping mechanism includes a third sliding rod 61, a third piston 62, a fifth spring 63 and a sixth spring 64 and oil, the oil is filled in the third sliding cavity, The third sliding rod 61 is located in the third sliding cavity and extends to the outside of the third sliding cavity and is connected to the external steel structure member. The third piston 62 is fixed in the middle of the third sliding rod 61, and the third piston 62 is connected to the third sliding cavity. The inner wall is slidably fitted, so that the third sliding cavity is divided into two chambers, the third piston 62 is provided with a third damping hole, the oil can flow back and forth in the two chambers through the third damping hole, the fifth The spring 63 is sleeved on the third sliding rod 61 and is located on the first side of the third piston 62, the two ends of the fifth spring 63 are respectively abutted on the third piston 62 and the inner wall of the third sliding chamber, and the sixth spring 64 is sleeved on the inner wall of the third sliding chamber. The third sliding rod 61 is located on the second side of the third piston 62, and both ends of the sixth spring 64 abut against the third piston 62 and the inner wall of the third sliding chamber respectively. In the free state of the third damping mechanism, the third piston 62 Located in the middle of the third sliding cavity, the end of the third sliding rod 61 away from the third anti-buckling support has a distance from the bottom of the third sliding cavity, and the third sliding rod 61 is subjected to the elastic force of the fifth spring 63 and the sixth spring 64 during the movement The movement of the third slide bar 61 is inhibited.

The third sliding rod 61 in the third damping mechanism is used to connect the connecting seat 2 and the external steel structural members. When an earthquake occurs, after the seismic energy is transmitted to the connecting seat 2, the connecting seat 2 vibrates. 2 can be relatively slidable, and the third piston 62 interacts in the third sliding cavity, so the vibration of the connecting seat 2 will not cause the third piston 62 to vibrate synchronously, and thus will not cause the external steel structure member connected to the third sliding rod 61. Vibration; it can be seen that the third group of your mechanism not only plays a role of connection, but also plays the role of consuming seismic energy.

Referring to FIG. 1, the anti-buckling support assembly further includes an elastic connector 7, and both ends of the elastic connector 7 are respectively connected with the middle of the first anti-buckling support 31 and the middle of the second anti-buckling support 32. The elastic connector 7 in this embodiment is a steel pipe, The stiffness of the steel pipe is small, it can be deformed, and the stability of the anti-buckling support assembly can be improved.

The above description is only a preferred embodiment of the present invention, but the protection scope of the present invention is not limited to this. The equivalent replacement or change of the inventive concept thereof shall be included within the protection scope of the present invention.

Claims (4)

1. An anti-seismic steel structure with anti-buckling supports is characterized by comprising a steel beam (1), a plurality of connecting seats (2) and a plurality of anti-buckling support assemblies;

the connecting seats (2) are fixed on the steel beam (1) at equal intervals along the length direction of the steel beam (1);

the buckling-restrained brace assembly is connected with the connecting seats (2) and located below the connecting seats (2), the buckling-restrained brace assembly comprises a first buckling-restrained brace (31) and a second buckling-restrained brace (32), one end of the first buckling-restrained brace (31) is connected with the connecting seats (2), one end of the second buckling-restrained brace (32) is connected with the connecting seats (2), the first buckling-restrained brace (31) and the second buckling-restrained brace (32) are located in the same plane, and acute included angles are preset between the first buckling-restrained brace (31) and the second buckling-restrained brace (32);

a first sliding cavity and a second sliding cavity are arranged on the connecting seat (2);

the damping device further comprises a first damping mechanism, the first damping mechanism comprises a first sliding rod (41), a first piston (42), a first spring (43), a second spring (44) and oil, the first sliding rod (41) is located in the first sliding cavity and extends to the outside of the first sliding cavity to be connected with the first buckling-restrained brace (31), the first piston (42) is fixed in the middle of the first sliding rod (41), the first piston (42) is in sliding fit with the inner wall of the first sliding cavity, a first damping hole is formed in the first piston (42), the first spring (43) is sleeved on the first sliding rod (41) and located on the first side of the first piston (42), two ends of the first spring (43) are respectively abutted against the first piston (42) and the inner wall of the first sliding cavity, the second spring (44) is sleeved on the first sliding rod (41) and located on the second side of the first piston (42), two ends of the second spring (44) are respectively abutted against the first piston (42) and the inner wall of the first sliding cavity, the oil liquid is filled in the first sliding cavity, and a first piston (42) is positioned in the middle of the first sliding cavity in a free state of the first damping mechanism;

the damping mechanism comprises a second sliding rod (51), a second piston (52), a third spring (53), a fourth spring (54) and oil, the second sliding rod (51) is located in the second sliding cavity and extends to the outside of the second sliding cavity to be connected with a second buckling-restrained brace (32), the second piston (52) is fixed in the middle of the second sliding rod (51), the second piston (52) is in sliding fit with the inner wall of the second sliding cavity, a second damping hole is formed in the second piston (52), the third spring (53) is sleeved on the second sliding rod (51) and located on the first side of the second piston (52), two ends of the second spring (44) are respectively abutted against the second piston (52) and the inner wall of the second sliding cavity, the fourth spring (54) is sleeved on the second sliding rod (51) and located on the second side of the second piston (52), and two ends of the fourth spring (54) are respectively abutted against the second piston (52) and the inner wall of the second sliding cavity, the oil liquid is filled in the second sliding cavity, and a second piston (52) is positioned in the middle of the second sliding cavity in the free state of the second damping mechanism.

2. Earthquake-resistant steel structure provided with buckling restrained braces according to claim 1, characterized in that the first slide bar (41) is hinged with the first buckling restrained brace (31) and the second slide bar (51) is hinged with the second buckling restrained brace (32).

3. The anti-seismic steel structure with the anti-buckling support is characterized in that a third sliding cavity is formed in one side, away from the anti-buckling support assembly, of the connecting seat (2);

the damping mechanism comprises a third sliding rod (61), a third piston (62), a fifth spring (63), a sixth spring (64) and oil, the third sliding rod (61) is located in the third sliding cavity and extends to the outside of the second sliding cavity, the third piston (62) is fixed in the middle of the third sliding rod (61), the third piston (62) is in sliding fit with the inner wall of the third sliding cavity, a third damping hole is formed in the third piston (62), the fifth spring (63) is sleeved on the third sliding rod (61) and located on the first side of the third piston (62), two ends of the fifth spring (63) are respectively abutted against the third piston (62) and the inner wall of the third sliding cavity, the sixth spring (64) is sleeved on the third sliding rod (61) and located on the second side of the third piston (62), two ends of the sixth spring (64) are respectively abutted against the third piston (62) and the inner wall of the third sliding cavity, the oil liquid is filled in the third sliding cavity, and a third piston (62) is positioned in the middle of the third sliding cavity in the free state of a third damping mechanism.

4. An earthquake-proof steel structure with anti-buckling supports according to claim 1, characterized in that the anti-buckling support assembly further comprises an elastic connecting piece (7), and two ends of the elastic connecting piece (7) are respectively connected with the middle parts of the first anti-buckling support (31) and the second anti-buckling support (32).

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