CN206128788U - Double-yield-point linear all-steel buckling-restrained energy dissipation support - Google Patents

Abstract

The utility model discloses an all-steel anti-buckling energy-dissipating support with double yield points, which comprises a core energy-dissipating plate. The core energy-dissipating plate includes a low-yield point steel plate (1) and an aluminum alloy plate (2). Two low-yield-point steel plates (1) with uniform specifications sandwich an aluminum alloy plate (2) in the middle to overlap to form an inline-shaped core energy dissipation plate, and the core energy dissipation plate is embedded in a double web formed by two I-beams The abdominal cavity of the I-shaped steel constrained member (3) constitutes a double-yield-point inline-shaped all-steel buckling-resistant energy-dissipating support, and the two ends of the core energy-dissipating plate are located outside the abdominal cavity of the double-web I-steel constrained member (3) for and Engineering structures are connected. The utility model adopts a plurality of energy-dissipating panels of different materials as the core, which can meet the design requirements of yielding energy consumption in stages under small earthquakes, moderate earthquakes and large earthquakes and realizing multiple performance levels and goals, and has a large bearing capacity. The end of the energy dissipation plate is reinforced without welding to avoid fatigue damage caused by end welding.

Description

Double yield point in-line all-steel anti-buckling energy-dissipating brace

technical field

The utility model relates to the field of anti-seismic technology, in particular to an energy-dissipating plate of different materials as the core, which can meet the design requirements of yield energy consumption in stages under small earthquakes, moderate earthquakes and large earthquakes, and realize multi-performance levels and goals. The double yield point in-line all-steel anti-buckling energy-dissipating brace.

Background technique

The existing in-line all-steel anti-buckling energy-dissipating brace currently has the following problems:

1. At present, most of the core energy-dissipating plates used in engineering for anti-buckling energy-dissipating supports are single-core equal-section steel plates, and a few are variable-section steel plates. Single-core steel plates cannot meet the demand for large bearing capacity, and the deformation of variable-section core energy-dissipating steel plates is mostly concentrated In small cross-sections, the energy dissipation in the staged yield section under small earthquakes, moderate earthquakes and large earthquakes cannot be realized;

2. A small number of buckling-resistant energy-dissipating supports that have been developed in stages are mostly reinforced by welding at the end, and the failure mode is that the weld at the end of the core energy-dissipating plate breaks, and the fatigue performance is not good;

3. In order to meet the current design requirements of multiple performance levels and goals, it is imperative to develop anti-buckling energy-dissipating supports that can yield and consume energy in stages under small, moderate and large earthquakes, and are easy to process and produce, and economical.

Contents of the invention

The purpose of this utility model is to solve the problems existing in the prior art, and to provide an energy-dissipating plate using different materials as the core, which can meet the staged yield energy consumption under small earthquakes, moderate earthquakes and large earthquakes, and achieve multi-performance levels and goals. The double-yield-point inline-shaped all-steel buckling-resistant energy-dissipating brace meets the design requirements.

The purpose of this utility model is solved by the following technical solutions:

An inline-shaped all-steel buckling-resistant energy-dissipating support with double yield points, including a core energy-dissipating plate, characterized in that: the core energy-dissipating plate includes a low-yield-point steel plate and an aluminum alloy plate, and two low-yielding plates with uniform shapes and specifications Point steel plates sandwich an aluminum alloy plate in the middle and overlap to form a straight-shaped core energy dissipation plate, and the core energy dissipation plate is embedded in the abdominal cavity of a double-web I-steel restraint member composed of two I-shaped steels to form a double yield point. Z-shaped all-steel buckling-resistant energy-dissipating support, and the two ends of the core energy-dissipating plate are located outside the abdominal cavity of the double-web I-steel restraint member for connection with the engineering structure.

The middle part of the double-web I-beam constraining member is provided with a card slot, and the middle part of the core energy dissipation plate is provided with a protrusion, and the core energy dissipation plate is embedded in the card groove through the protrusion to fix the core energy dissipation plate on the double web Plate I-beams constrain the member's abdominal cavity.

The clamping grooves are arranged symmetrically on both sides of the abdominal cavity of the double-web I-beam restraining member, and the corresponding two sides of the core energy dissipation plate are respectively provided with protrusions.

The gap between the core energy dissipation plate and the inner wall of the abdominal cavity of the double-web I-steel constraining member is filled with non-bonded material to provide the core energy dissipation plate due to the lateral deformation caused by the Poisson effect during axial deformation. Need space.

Connecting plates are arranged on both sides of the end of the core energy-dissipating plate, and the connecting plates are fixedly connected to the end of the core energy-dissipating plate through bolts.

The two ends of the web of the double-web I-steel restraint member are respectively provided with positioning grooves, and the protruding part of the connecting plate can be embedded in the positioning groove so that the connecting plate can be fixed on the web of the double-web I-beam restraint member .

Compared with the prior art, the utility model has the following advantages:

The overall core energy dissipation plate of the utility model is made of overlapping two low yield point steel plates and one aluminum alloy plate. The gaps around the core energy dissipation plate in the abdominal cavity are filled with non-bonded material to provide the space required for the lateral deformation of the core energy dissipation plate due to the Poisson effect when the core energy dissipation plate deforms axially, so that the support can withstand tension and compression. Have similar mechanical properties as much as possible; through the different working states of two low-yield point steel plates and one aluminum alloy plate in various seismic conditions, the seismic energy is consumed in stages; The support adopts a reasonable end structure to strengthen the end of the core energy dissipation plate without welding, which avoids fatigue damage caused by end welding.

The double-yield-point inline-shaped all-steel anti-buckling energy-dissipating brace of the utility model is used when a small earthquake occurs (that is, when it is subjected to frequent earthquakes lower than the seismic fortification intensity in this area), due to the small earthquake intensity, the double-web I-shaped The steel restraint members are in an elastic state and provide lateral stiffness; when a moderate earthquake occurs (that is, when subjected to an earthquake equivalent to the seismic fortification intensity of the area), the seismic energy can be consumed through the plastic deformation of two steel plates with low yield points, and the aluminum alloy plate Maintain an elastic state and provide lateral stiffness; when a large earthquake occurs (that is, when it is affected by a rare earthquake that is higher than the expected seismic fortification intensity in the area), the steel plate with a low yield point yields first and consumes energy, and the aluminum alloy plate yields later and consumes energy. Dissipate energy together with the low yield point steel plate, so as to better consume the energy input by the earthquake; therefore, the ordinary buckling-resistant brace at a single yield point cannot adapt to different levels of earthquake action, and the buckling-resistant brace with double yield points can withstand earthquakes at different levels Play the role of staged energy consumption under the action.

Description of drawings

Accompanying drawing 1 is the decomposition structure schematic diagram of double yield point in-line all-steel anti-buckling energy-dissipating support of the present utility model;

Accompanying drawing 2 is the three-dimensional structure schematic diagram of the all-steel anti-buckling energy-dissipating support with double yield points of the present invention.

Among them: 1—steel plate with low yield point; 2—aluminum alloy plate; 3—double web I-steel restraint member; 4—connecting plate; 5—positioning groove;

detailed description

Below in conjunction with accompanying drawing and embodiment the utility model is described further.

As shown in Figure 1-2: a double-yield-point inline-shaped all-steel buckling-resistant energy-dissipating support, including a core energy-dissipating plate, the core energy-dissipating plate includes a low-yield point steel plate 1 and an aluminum alloy plate 2, and is uniform in shape and specification Two low-yield point steel plates 1 sandwich an aluminum alloy plate 2 in the middle and overlap to form an inline-shaped core energy-dissipating plate, and the core energy-dissipating plate is embedded in the double-web I-beam constraining member 3 composed of two I-beams The double-yield-point inline-shaped all-steel buckling-resistant energy-dissipating support is formed in the abdominal cavity, and the two ends of the core energy-dissipating plate are located outside the abdominal cavity of the double-web I-steel restraint member 3 for connection with the engineering structure. In order to enhance the stability, the middle part of the double-web I-beam restraint member 3 is provided with a slot 6, and the middle part of the core energy-dissipating plate is provided with a bump 7, and the core energy-dissipating plate is embedded in the slot 6 through the bump 7. The core energy-dissipating plate is fixed in the abdominal cavity of the double-web I-steel constraining member 3; further, the slots 6 are arranged symmetrically on both sides of the abdominal cavity of the double-web I-steel constraining member 3, and the corresponding core energy-dissipating plate The two sides are also respectively provided with bumps 7 . In addition, the gap between the core energy-dissipating plate and the inner wall of the abdominal cavity of the double-web I-steel constraining member 3 is filled with non-bonding material to provide lateral deformation of the core energy-dissipating plate due to the Poisson effect during axial deformation required space. The above-mentioned core energy-dissipating plate includes a connection section, a transition section and an energy-dissipating section. The energy-dissipating section is located in the abdominal cavity of the double-web I-beam constraining member 3 and is embedded in the slot 6 and the double-web I-beam through the protrusion 7. The steel constraining member 3 is fixedly connected to ensure that the center of the core energy-dissipating plate remains unchanged relative to the double-web I-beam constraining member 3; the transition section is the energy-dissipating section extending behind the abdominal cavity of the double-web I-beam constraining member 3 The arc-shaped part between the connection section; the end of the core energy dissipation plate is connected to the engineering structure as a connection section.

On the basis of the above structure, connecting plates 4 are respectively arranged on both sides of the end of the core energy dissipation plate, and the connecting plate 4 is fixedly connected to the end of the core energy dissipation plate by bolts to ensure the connection of the end connection section of the core energy dissipation plate. Two-way stability; at the same time, positioning grooves 5 are respectively provided at both ends of the web of the double-web I-beam restraining member 3, and the protruding part of the connecting plate 4 can be embedded in the positioning groove 5 so that the connecting plate 4 can be fixed on the double-web The web plate of the I-beam restraining member 3 .

The integral core energy dissipation plate of the utility model is made by overlapping two low-yield point steel plates 1 and one aluminum alloy plate 2, and the two low-yield point steel plates 1 are placed on both sides of the aluminum alloy plate 2, placed on the The gaps around the core energy-dissipating plate in the abdominal cavity of the beam-shaped steel constraining member 3 are filled with unbonded material to provide the space required for the lateral deformation of the core energy-dissipating plate due to the Poisson effect when the axial deformation occurs, so that the support can The mechanical properties are as similar as possible in the process of tension and compression; through the different working states of two low-yield point steel plates 1 and one aluminum alloy plate 2 in various earthquake conditions, the seismic energy is consumed in stages; in addition, the double yield point The in-line all-steel anti-buckling energy-dissipating support adopts a reasonable end structure to strengthen the end of the core energy-dissipating plate without welding, which avoids fatigue damage caused by end welding. The double-yield-point inline-shaped all-steel anti-buckling energy-dissipating brace of the utility model is used when a small earthquake occurs (that is, when it is subjected to frequent earthquakes lower than the seismic fortification intensity in this area), due to the small earthquake intensity, the double-web I-shaped The steel restraint member 3 is in an elastic state and provides lateral stiffness; when a moderate earthquake occurs (that is, when it is affected by an earthquake equivalent to the seismic fortification intensity of the local area), it can dissipate the seismic energy through the plastic deformation of two low-yield steel plates 1, aluminum The alloy plate 2 maintains an elastic state and provides lateral stiffness; when a large earthquake occurs (that is, when it is affected by a rare earthquake that is higher than the expected seismic fortification intensity in the area), the low yield point steel plate 1 yields first and consumes energy, and the aluminum alloy plate 2 Post-yield energy consumption and joint energy consumption with the low yield point steel plate 1, so as to better consume the energy of the earthquake input structure; therefore, the ordinary buckling-resistant bracing at a single yield point cannot adapt to different levels of earthquake action, and the buckling-resistant brace with double yield points The support can play the role of staged energy consumption under different levels of earthquake action.

In a word, the dual-yield-point inline-shaped all-steel buckling-resistant energy-dissipating support of the utility model adopts a plurality of energy-dissipating plates as the inner core, so it can meet the demand for larger bearing capacity; and adopting energy-dissipating plates of different materials as the inner core can meet the Under small earthquakes, moderate earthquakes and large earthquakes, yield energy dissipation in stages and design requirements to achieve multiple performance levels and goals; reasonable end structure strengthens the end of the core energy dissipation plate without welding to avoid fatigue caused by end welding destroy.

The above embodiments are only to illustrate the technical ideas of the utility model, and cannot limit the protection scope of the utility model with this. Any changes made on the basis of the technical solutions according to the technical ideas proposed by the utility model all fall into the scope of the utility model. Within the scope of protection of the new model; technologies not involved in the utility model can be realized by prior art.

Claims (6)

1. a kind of pair of yield point in-line all steel buckling-restrained energy-dissipation, including core Wasted-energy steel plate, it is characterised in that：Described core Heart Wasted-energy steel plate includes low yield point steel plate（1）And aluminium alloy plate（2）, two pieces of low yield point steel plates of shape specification unification（1）Will One piece of aluminium alloy plate（2）It is clipped in the middle and overlaps the core Wasted-energy steel plate of in-line, core Wasted-energy steel plate is embedded in two blocks of I-steel The double web I-steel confining parts for constituting（3）Abdominal cavity in constitute double yield point in-line all steel buckling-restrained energy-dissipations, and The two ends of core Wasted-energy steel plate are located at double web I-steel confining parts（3）Abdominal cavity outside for being connected with engineering structure.

2. according to claim 1 pair of yield point in-line all steel buckling-restrained energy-dissipation, it is characterised in that：Described pair of abdomen Plate I-steel confining part（3）Middle part be provided with draw-in groove（6）, in the middle part of core Wasted-energy steel plate projection is provided with（7）, core Wasted-energy steel plate lead to Cross projection（7）It is embedded in draw-in groove（6）It is middle that core Wasted-energy steel plate is fixed on into double web I-steel confining parts（3）Abdominal cavity in.

3. according to claim 2 pair of yield point in-line all steel buckling-restrained energy-dissipation, it is characterised in that：Described card Groove（6）It is symmetricly set on double web I-steel confining parts（3）Abdominal cavity both sides, and the corresponding both sides of core Wasted-energy steel plate also distinguish It is provided with projection（7）.

4. according to claim 1 pair of yield point in-line all steel buckling-restrained energy-dissipation, it is characterised in that：The core Wasted-energy steel plate and double web I-steel confining parts（3）Internal abdominal wall between gap using non-cohesive material fill, with provide Core Wasted-energy steel plate is in axial deformation due to the lateral deformation requisite space of poisson effect generation.

5. according to claim 1 pair of yield point in-line all steel buckling-restrained energy-dissipation, it is characterised in that：The core The end both sides of Wasted-energy steel plate are respectively provided with connecting plate（4）, connecting plate（4）Fixed by the end of bolt and core Wasted-energy steel plate and connected Connect.

6. according to claim 5 pair of yield point in-line all steel buckling-restrained energy-dissipation, it is characterised in that：Described pair of abdomen Plate I-steel confining part（3）Web be respectively arranged at two ends with locating slot（5）, connecting plate（4）Extending area can be embedded in it is fixed Position groove（5）In cause connecting plate（4）Double web I-steel confining parts can be fixed on（3）Web on.