CN210395704U

CN210395704U - Anti-seismic energy dissipation device for key part of frame structure

Info

Publication number: CN210395704U
Application number: CN201920848780.3U
Authority: CN
Inventors: 茆会勇; 刘金座; 曹珈源; 杨俊鹏; 陈江邺
Original assignee: Shanghai Zhongcehang Testing & Consulting Engineering Co ltd
Current assignee: Shanghai Zhongcehang Testing & Consulting Engineering Co ltd
Priority date: 2019-06-06
Filing date: 2019-06-06
Publication date: 2020-04-24
Anticipated expiration: 2029-06-06

Abstract

The utility model discloses an antidetonation power consumption device at frame construction key position, it includes: the energy consumption rod piece is composed of a plurality of sections of circular energy consumption steel; in the multiple sections of circular energy-consuming steel products, adjacent circular energy-consuming steel products are connected through high-strength closed turnbuckle screws; the energy consumption rod piece is sleeved with an anti-buckling constraint sleeve; the energy dissipation rod piece is arranged on the square steel surrounding sleeve support fixed at the upper and lower column roots and the beam top and the beam bottom through the cutting sleeve. The utility model discloses especially building structure's power consumption support form shifts to miniaturized direction, more matches with the old building structure system rigidity that needs to reform transform, keeps the whole coordination performance that warp of structure good.

Description

Anti-seismic energy dissipation device for key part of frame structure

Technical Field

The invention relates to the technical field of reconstruction and reinforcement of building structures, in particular to an anti-seismic energy dissipation device for key parts of a frame structure.

Background

The size and scale of the energy-consuming support form of the currently applied building structure are large and medium, so that the rigidity of a corresponding local area is extremely high and sudden change is easily caused, the integral deformation coordination performance of the structure is poor, and potential safety hazards are reserved.

The invention particularly transfers the energy consumption supporting form of the building structure to the miniaturization direction, and the energy consumption supporting form is more matched with the rigidity of an old building structure system needing to be modified, so that the integral deformation coordination performance of the structure is kept to be good. Meanwhile, the invention is also a concrete measure, realization and expansion about the realization of the earthquake-resistant performance goal of the building structure in the existing building earthquake-resistant standard, and particularly has the necessity of practical application to important buildings. Finally, the series of energy consumption forms are supplemented and enriched, and market manufacturers are guided to develop new energy-consumption steel products.

Disclosure of Invention

The invention aims to solve the technical problems and provides an anti-seismic energy dissipation device for key parts of a frame structure.

In order to solve the above technical problems, an embodiment of the present invention provides an anti-seismic energy dissipation device for a key portion of a frame structure, including: the energy consumption rod piece is composed of a plurality of sections of circular energy consumption steel;

in the multiple sections of circular energy-consuming steel products, adjacent circular energy-consuming steel products are connected through high-strength closed turnbuckle screws;

the energy consumption rod piece is sleeved with an anti-buckling constraint sleeve;

the energy dissipation rod piece is arranged on the square steel surrounding sleeve support fixed at the upper and lower column roots and the beam top and the beam bottom through the cutting sleeve.

Furthermore, a plurality of beam middle section supports for restraining the energy consumption rod pieces from moving laterally are arranged at equal intervals on the middle span section of the frame beam on which the energy consumption rod pieces are installed.

Furthermore, the beam middle section support is made of flat steel, a first opening allowing the frame beam to pass through is formed in the flat steel, and second openings allowing the energy consumption rod pieces to pass through are formed in the positions of four corners of the beam middle section support.

The invention has the following beneficial effects:

(1) the hogging moment area of the top surface of the beam end can be reinforced.

(2) The beam end can be provided with a local tension-compression energy dissipater to form a beam end plastic hinge in the real sense, so that the plastic hinge can enter a yielding energy consumption state stage by stage under small earthquake, medium earthquake and even large earthquake. Thereby comprehensively improving the rigidity, the bearing capacity, the ductility and the energy consumption capacity of the beam.

(3) When the beam is reinforced, the surrounding sleeve not only fixes but also strengthens the root of the column, and naturally accords with the earthquake-proof principle of strong columns and weak beams.

(4) The energy-consuming support form of the building structure is transferred to the miniaturization direction, the rigidity of the energy-consuming support form is matched with the rigidity of an old building structure system to be modified, and the good integral deformation coordination performance of the structure is kept.

(5) The series of energy consumption forms are supplemented and enriched, and market manufacturers are guided to develop new energy consumption steel products.

The invention relates to a method and a corresponding device for reforming and reinforcing the key parts of a frame structure, namely two ends of a beam.

Drawings

Fig. 1 is a perspective view of a beam column.

Fig. 2 is a perspective view of a frame beam column provided with an energy dissipation device.

Fig. 3 is a schematic view of a circular energy-consuming steel material and a buckling restrained sleeve.

Fig. 4 is a sectional view taken along line a-a of fig. 3.

Fig. 5 is a schematic view of a square-shaped steel enclosure support.

Fig. 6 is a schematic view of a circular scoring cannula.

Fig. 7 is a schematic view of a high-strength closed turnbuckle.

Fig. 8 is a schematic view of a beam mid-section mount.

Detailed Description

In order to make the technical means, the creation characteristics, the achievement purposes and the effects of the invention easy to understand, the invention is further described with the specific embodiments.

Example 1: referring to fig. 2 to 8, an anti-seismic and energy-consuming device for key parts of a frame structure comprises: the energy consumption rod piece is composed of multiple sections of circular energy consumption steel materials 1.

In the circular energy consumption steel 1 of multistage, connect through high strength closed turnbuckle 5 between the adjacent circular energy consumption steel 1.

The energy consumption rod piece is sleeved with an anti-buckling constraint sleeve 4.

The energy dissipation rod piece is arranged on a square steel surrounding sleeve support 2 fixed at the upper and lower column roots, the beam top and the beam bottom through a cutting sleeve 3.

And 2 beam middle section supports 6 for restraining the energy consumption rod pieces from moving laterally are arranged at equal intervals on the middle span section of the frame beam on which the energy consumption rod pieces are installed. Beam middle section supports 6 are arranged at the beam middle section at equal intervals 2 and used for restraining lateral movement of energy consumption rod pieces, referring to fig. 8, the beam middle section supports 6 are made of flat steel, first openings 6a allowing the frame beam middle sections 9 to penetrate are arranged inside the flat steel, and second openings 6b allowing the energy consumption rod pieces to penetrate are arranged at the positions of four corners of the beam middle section supports 6.

The construction method of the structure is described below, and is carried out in the following construction sequence:

(1) the square steel surrounding sleeve support is made into a one-shaped steel plate and a U-shaped steel plate in advance.

(2) And respectively welding two engraved bushings on two sides of a U-shaped steel plate.

(3) And (3) fixing prefabricated 'I' and 'U' shaped steel plates at the column root on site, and welding to form the U-shaped steel surrounding sleeve support.

(4) One end of the circular energy-consuming steel is screwed with the cutting sleeve, the other end of the circular energy-consuming steel is sleeved with the buckling-restrained sleeve, and the other circular energy-consuming steel is screwed, connected and welded firmly through the high-strength closed type turnbuckle, so that a complete energy-consuming rod piece consisting of multiple sections of circular energy-consuming steel is formed.

(5) The above steps are repeated according to the number of the design requirements.

(6) And (5) repeatedly arranging the upper and lower column roots of the node and the beam top and beam bottom in a antisymmetric manner.

(7) And (3) arranging a plurality of beam middle section supports at equal intervals in the beam cross middle section to restrain the energy dissipation rod pieces formed in the steps (5) and (6) from moving laterally (namely, an outer sleeve is clamped, and only the energy dissipation core material can move axially along the beam).

The invention particularly transfers the energy consumption supporting form of the building structure to the miniaturization direction, and the energy consumption supporting form is more matched with the rigidity of an old building structure system to be reconstructed, so that the integral deformation coordination of the structure is kept to be good. Particularly, the invention can play a positive role in a large number of protected excellent historical buildings (such as buildings in famous cities and ancient towns of historical culture of China).

Example 2: fig. 1 is a perspective view of a beam column, showing a frame column 7, a frame beam 8 mounted to the frame column, and a frame beam span 9 between the two frame columns where an energy consuming device is required.

Fig. 2 shows a frame beam span of the installed energy dissipation device, and the following detailed description describes a seismic energy dissipation method for key parts of a specific frame structure, which includes the following steps:

s1, welding two cutting sleeves 3 on two sides of a square steel surrounding sleeve support 2 respectively according to requirements, wherein the square steel surrounding sleeve support 2 is formed in a welding mode in site in the figure 5, and the square steel surrounding sleeve support 2 comprises a U-shaped main body and a sealing plate welded on the opening side of the U-shaped main body.

And S2, fixing the square steel surrounding sleeve support 2 at the column root.

S3, screwing one end of a circular energy-consuming steel material 1 onto a cutting sleeve 3, sleeving an anti-buckling constraint sleeve 4 from one end, and screwing and connecting another circular energy-consuming steel material 1 through a high-strength closed turnbuckle 5 to form an energy-consuming rod member consisting of multiple sections of circular energy-consuming steel materials 1, wherein the circular energy-consuming steel material 1 is shown in figure 3, the anti-buckling constraint sleeve 4 is sleeved outside the circular energy-consuming steel material 1, and an unbonded filling material 4' is filled in the anti-buckling constraint sleeve 4.

And S4, repeating the steps S1, S2 and S3 according to the number of energy consumption rods required by design.

S5, arranging energy dissipation rods at the upper and lower column roots, the beam top and the beam bottom of the node in a antisymmetric manner, and finally finishing the construction, wherein the effect is shown in figure 2.

It is worth mentioning that beam middle section supports 6 are arranged 2 at the middle section of the beam span at equal intervals and used for restraining lateral movement of the energy consumption rod piece, the beam middle section supports 6 are made of flat steel, openings for allowing the frame beam span 9 to penetrate are formed in the flat steel, and openings for allowing the energy consumption rod piece to penetrate are formed in the positions of four corners of the beam middle section supports 6.

The application characteristics of the invention and the existing energy-consuming support system are compared, and the comparison condition is shown in the following table 1.

TABLE 1

It will be understood by those of ordinary skill in the art that the foregoing embodiments are specific examples for carrying out the invention, and that various changes in form and details may be made therein without departing from the spirit and scope of the invention in practice.

Claims

1. An antidetonation power consumption device of frame construction key position, its characterized in that, it includes: the energy consumption rod piece is composed of a plurality of sections of circular energy consumption steel;

2. An earthquake-resistant energy dissipation device for key parts of a frame structure as claimed in claim 1, wherein the frame beams on which the energy dissipation members are mounted are provided with a plurality of beam middle-section supports which restrain the energy dissipation members from moving laterally at equal intervals across the middle section.

3. An earthquake-resistant energy dissipation device for key parts of a frame structure as claimed in claim 2, wherein the beam middle section support is made of flat steel, a first opening for the frame beam to pass through is formed in the flat steel, and second openings for energy dissipation rod members to pass through are formed in four corner positions of the beam middle section support.