CN113374325A - Assembled steel structure based on self-resetting angle braces and energy dissipation coupling beams - Google Patents
Assembled steel structure based on self-resetting angle braces and energy dissipation coupling beams Download PDFInfo
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- CN113374325A CN113374325A CN202110385845.7A CN202110385845A CN113374325A CN 113374325 A CN113374325 A CN 113374325A CN 202110385845 A CN202110385845 A CN 202110385845A CN 113374325 A CN113374325 A CN 113374325A
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- self
- earthquake
- energy
- energy dissipation
- resetting angle
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04H—BUILDINGS OR LIKE STRUCTURES FOR PARTICULAR PURPOSES; SWIMMING OR SPLASH BATHS OR POOLS; MASTS; FENCING; TENTS OR CANOPIES, IN GENERAL
- E04H9/00—Buildings, groups of buildings or shelters adapted to withstand or provide protection against abnormal external influences, e.g. war-like action, earthquake or extreme climate
- E04H9/02—Buildings, groups of buildings or shelters adapted to withstand or provide protection against abnormal external influences, e.g. war-like action, earthquake or extreme climate withstanding earthquake or sinking of ground
- E04H9/021—Bearing, supporting or connecting constructions specially adapted for such buildings
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
- E04B1/00—Constructions in general; Structures which are not restricted either to walls, e.g. partitions, or floors or ceilings or roofs
- E04B1/62—Insulation or other protection; Elements or use of specified material therefor
- E04B1/92—Protection against other undesired influences or dangers
- E04B1/98—Protection against other undesired influences or dangers against vibrations or shocks; against mechanical destruction, e.g. by air-raids
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04H—BUILDINGS OR LIKE STRUCTURES FOR PARTICULAR PURPOSES; SWIMMING OR SPLASH BATHS OR POOLS; MASTS; FENCING; TENTS OR CANOPIES, IN GENERAL
- E04H9/00—Buildings, groups of buildings or shelters adapted to withstand or provide protection against abnormal external influences, e.g. war-like action, earthquake or extreme climate
- E04H9/02—Buildings, groups of buildings or shelters adapted to withstand or provide protection against abnormal external influences, e.g. war-like action, earthquake or extreme climate withstanding earthquake or sinking of ground
- E04H9/024—Structures with steel columns and beams
Abstract
The invention discloses an assembly type steel structure based on a self-resetting angle brace and an energy dissipation connecting beam, which comprises steel frame beams, columns, the self-resetting angle brace and the energy dissipation connecting beam, wherein the self-resetting angle brace is connected in the area near a beam column node through bolts, the energy dissipation connecting beam is connected between the two steel frame columns through bolts, the columns and a foundation are connected through foundation bolts, and stiffening ribs are uniformly distributed near each bolt on a steel frame. The anti-seismic component keeps elasticity under the static force action of the assembled steel structure; under the action of earthquake, the energy dissipation connecting beam absorbs earthquake energy through plastic deformation all the time; the self-resetting angle brace provides the capability of restoring deformation for the structure under small, medium and large earthquakes; under the condition of a heavy earthquake, the energy dissipation connecting beam is fully deformed to dissipate energy, meanwhile, the self-resetting angle brace enters a strengthening stage, the resistance of the structure is improved through the rapidly increased bearing capacity, so that the whole collapse of the structure is avoided, and under the action of an earthquake, the structure is restored to an initial position by the self-resetting angle brace while the earthquake energy is effectively dissipated.
Description
Technical Field
The invention belongs to the field of civil engineering quakeproof and disaster reduction, and relates to a novel assembly type steel structure system applied to the field of structural engineering.
Background
The research on the earthquake-resistant performance of buildings is a problem focused on civil engineering all the time, and along with the improvement of social and economic levels, the requirement of earthquake-resistant fortification of buildings is shifting from the guarantee of basic life safety to the guarantee of double safety of life and property. In recent years, the assembled steel structure is gradually widely used in the building engineering of China, and the earthquake resistance of the assembled steel structure is good. The steel structure has high strength, good ductility, light dead weight and strong elastic deformation capability, can reduce the damage of earthquake shearing force to buildings and greatly improves the stress of the structure. However, after an earthquake, a certain residual deformation occurs, which results in property loss, function loss and the like, thereby seriously affecting earthquake relief and recovery after earthquake.
Shape Memory Alloy (SMA) is a new type of smart material with shape memory effect and superelasticity. Usually, the restorable ultimate strain of the SMA can reach 10%, based on super elasticity, the SMA has almost no residual deformation after being unloaded due to large strain, and forms a full hysteresis curve, thereby not only absorbing part of input energy in earthquake, but also reducing residual displacement and providing good self-resetting performance. The SMA and the anti-bending steel sleeve are combined to form the self-resetting angle brace, and compared with a central support and an eccentric support, the angle brace type arrangement mode greatly reduces the influence on the indoor space of a building, the appearance of the building and the use function of the building. The energy dissipation connecting beam is made of steel, and the seismic energy is absorbed through plastic deformation all the time under small, medium and large earthquakes, so that the seismic response of the structure is greatly reduced.
In order to protect articles which are sensitive to earthquake action in a building more effectively and reduce the residual deformation of the structure after earthquake, the invention provides a novel assembly type steel structure based on self-resetting angle braces and energy dissipation connecting beams, which can obviously reduce the residual displacement of the structure. Under the action of an earthquake, the integral structure laterally moves, and the change of the corner of a beam-column joint causes the axial deformation of the self-resetting angle brace; meanwhile, the inner frame columns of two adjacent spans generate displacement difference in the vertical direction, so that the in-plane deformation of the energy dissipation connecting beam is caused. The anti-seismic member in the new system can play a bearing function in a normal use state and play a function in stages under the action of an earthquake. Under the static force action, the anti-seismic component keeps elasticity; under the action of earthquake, the energy dissipation connecting beam absorbs earthquake energy through plastic deformation all the time; the self-resetting angle brace provides the capability of restoring deformation for the structure under small, medium and large earthquakes; under the condition of a heavy earthquake, the energy dissipation connecting beam is fully deformed to dissipate energy, meanwhile, the self-resetting angle brace enters a strengthening stage, the resistance of the structure is improved through the rapidly increased bearing capacity, so that the whole collapse of the structure is avoided, and under the action of an earthquake, the self-resetting angle brace can restore the structure to an initial position while the earthquake energy is effectively dissipated.
Disclosure of Invention
In order to protect articles which are sensitive to earthquake action in a building more effectively and reduce the residual deformation of the structure after earthquake, the invention provides a novel assembly type steel structure based on a self-resetting angle brace and an energy dissipation connecting beam, which can obviously reduce the residual displacement of the structure and provide the capability of restoring deformation for the structure under small, medium and large earthquakes; under the condition of a huge earthquake, the energy dissipation connecting beam is fully deformed to dissipate energy, and the self-resetting corner brace can restore the structure to the initial position. Compared with the traditional assembled steel structure, the invention not only can improve the space utilization rate and reduce the cost, but also can ensure the use function of the building and reduce the loss after the earthquake.
In order to solve the problems, the invention provides a novel assembly type steel structure based on a self-resetting angle brace and an energy dissipation coupling beam, which comprises the following components: the self-resetting angle brace is connected between the column and the beam through the bolt, the energy dissipation connecting beam is connected between the column and the column through the bolt, and the energy dissipation connecting beam is parallel and level to the self-resetting angle brace. The beam and the column are connected through bolts. The self-resetting angle brace consists of a buckling-restrained steel sleeve and shape memory alloy, wherein the shape memory alloy can be dog-bone-shaped, bamboo-shaped and the like, and is not limited to a specific shape.
The invention provides a novel assembly type steel structure based on a self-resetting angle brace and an energy dissipation connecting beam, which can play a bearing function in a normal use state, and play a role in stages under the action of an earthquake, wherein the integral structure is laterally shifted under the action of the earthquake, and the change of the corner of a beam column joint causes the axial deformation of the self-resetting angle brace; meanwhile, the inner frame columns of two adjacent spans generate displacement difference in the vertical direction, so that the in-plane deformation of the energy dissipation connecting beam is caused. The self-resetting angle brace and the energy dissipation connecting beam can effectively reduce the damage of an earthquake to a key room and the whole, the energy dissipation connecting beam can absorb energy input during the earthquake, and the self-resetting angle brace can restore a structural system after the earthquake to reduce residual deformation.
The invention has the beneficial effects that: 1. compared with the central support and the eccentric support, the angle support type arrangement mode greatly reduces the influence on the indoor space of the building, the appearance of the building and the use function of the building. 2. According to conventional structural mechanics analysis, the self-resetting angle brace changes the force transmission path of the beam and can share the floor load borne by the beam, so that the shearing force, bending moment and deflection of the beam are obviously reduced, and the horizontal component force generated in the deformation process is resisted by the energy dissipation connecting beam. 3. The anti-seismic component can remarkably reduce the column body bending moment while ensuring the lateral rigidity of the structure; and the self-resetting angle brace and the energy dissipation connecting beam provide lateral restraint for the column together, so that the calculated length of the column is reduced, and the axial compression stability of the column is further improved. 4. The energy dissipation connecting beam absorbs the earthquake energy through plastic deformation all the time; under the condition of small, medium and large earthquakes, the self-resetting angle brace provides the capability of restoring deformation for the structure, and under the condition of a large earthquake, the self-resetting angle brace enters a strengthening stage, so that objects which are sensitive to the earthquake action in the building can be effectively protected through the rapidly increased bearing capacity.
Drawings
In order to more clearly explain the technical means of the present invention, the present invention will be further described in detail with reference to the accompanying drawings and specific embodiments.
FIG. 1 is a schematic diagram of the present invention.
Figure 2 is a schematic view of an energy dissipation coupling beam structure.
Fig. 3 is a schematic view of a self-resetting angle brace structure.
In the figure: 1. a self-resetting knee brace; 2. a bolt; 3. a column; 4. a stiffening rib; 5. a beam; 6. energy dissipation connecting beams; 7. an anti-buckling steel sleeve; 8. a shape memory alloy.
Detailed Description
The following detailed description of embodiments of the present invention is provided in connection with the accompanying drawings and examples. The following examples are intended to illustrate the invention but are not intended to limit the scope of the invention.
Referring to fig. 1, the novel assembly type steel structure based on the self-resetting angle brace and the energy dissipation connecting beam comprises a self-resetting angle brace 1, bolts 2, a column 3, stiffening ribs 4, a beam 5, an energy dissipation connecting beam 6, a buckling-restrained steel sleeve 7 and a shape memory alloy 8, wherein the self-resetting angle brace 1 is connected between the column 3 and the beam 5 through the bolts 2, the energy dissipation connecting beam 6 is connected between the column and the column 3 through the bolts 2, and the energy dissipation connecting beam 6 is flush with the self-resetting angle brace 1. The beam 5 and the column 3 are connected through a bolt 2. Self-resetting angle brace 1 is connected between column 3 and beam 5 through bolt 2, self-resetting angle brace 1 is composed of anti-bending steel sleeve 7 and shape memory alloy 8, and shape memory alloy 8 can be dog bone-shaped, bamboo joint-shaped and the like, and is not limited to a specific shape.
The anti-seismic component keeps elasticity under the static force action of the assembled steel structure; under the action of earthquake, the energy dissipation connecting beam absorbs earthquake energy through plastic deformation all the time; the self-resetting angle brace provides the capability of restoring deformation for the structure under small, medium and large earthquakes; under the condition of a heavy earthquake, the energy dissipation connecting beam is fully deformed to dissipate energy, meanwhile, the self-resetting angle brace enters a strengthening stage, the resistance of the structure is improved through the rapidly increased bearing capacity, so that the whole collapse of the structure is avoided, under the action of an earthquake, the earthquake energy is effectively dissipated, meanwhile, the self-resetting angle brace can restore the structure to an initial position, and the damage of the earthquake to a key room and the whole is effectively reduced.
Claims (5)
1. An assembled steel structure based on self-resetting angle braces and energy dissipation coupling beams is characterized by comprising: the self-resetting angle brace (1), bolts (2), columns (3), stiffening ribs (4), beams (5) and energy dissipation connecting beams (6); the self-resetting angle brace (1) is connected between the column (3) and the beam (5) through the bolt (2), the energy dissipation connecting beam (6) is connected between the column and the column (3) through the bolt (2), and the position of the energy dissipation connecting beam (6) is flush with the self-resetting angle brace (1). The beam (5) and the column (3) are connected through a bolt (2).
2. A new assembly steel structure based on self-resetting angle braces and energy-dissipating coupling beams according to claim 1, characterized in that the self-resetting angle braces (1) are connected between the columns (3) and the beams (5) through bolts (2), and the self-resetting angle braces (1) are composed of anti-buckling steel sleeves (7) and shape memory alloys (8).
3. An assembled steel structure based on self-resetting angle braces and energy-dissipating coupling beams according to claim 2, characterized in that: the shape memory alloy (8) is in a dog bone shape or a bamboo joint shape.
4. An assembled steel structure based on self-resetting angle braces and energy-dissipating coupling beams as claimed in claim 1, characterized in that the energy-dissipating coupling beams (6) are connected between the columns and the pillars (3) by bolts (2) at the same level as the self-resetting angle braces (1), and in the steel frame, stiffening ribs (4) are arranged around the vicinity of each bolt (2), the stiffening ribs (4) being welded in the webs of the beams (5) and the pillars (3).
5. The assembled steel structure based on the self-resetting angle braces and the energy dissipation connecting beams as claimed in claim 1, wherein the anti-seismic component can perform a bearing function in a normal use state, perform functions in stages under the action of an earthquake, and maintain elasticity under the action of static force; under the action of earthquake, the energy dissipation connecting beam absorbs earthquake energy through plastic deformation all the time; the self-resetting angle brace provides the capability of restoring deformation for the structure under small, medium and large earthquakes; under the condition of a heavy earthquake, the energy dissipation connecting beam is fully deformed to dissipate energy, meanwhile, the self-resetting angle brace enters a strengthening stage, the resistance of the structure is improved through the rapidly increased bearing capacity, so that the whole collapse of the structure is avoided, and under the action of an earthquake, the structure is restored to an initial position by the self-resetting angle brace while the earthquake energy is effectively dissipated.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110385845.7A CN113374325A (en) | 2021-04-11 | 2021-04-11 | Assembled steel structure based on self-resetting angle braces and energy dissipation coupling beams |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110385845.7A CN113374325A (en) | 2021-04-11 | 2021-04-11 | Assembled steel structure based on self-resetting angle braces and energy dissipation coupling beams |
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| CN113374325A true CN113374325A (en) | 2021-09-10 |
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| CN202110385845.7A Pending CN113374325A (en) | 2021-04-11 | 2021-04-11 | Assembled steel structure based on self-resetting angle braces and energy dissipation coupling beams |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115758542A (en) * | 2022-11-30 | 2023-03-07 | 中国建筑西南设计研究院有限公司 | Spatial multi-ribbed steel beam floor system analysis method |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104612243A (en) * | 2015-02-09 | 2015-05-13 | 海南大学 | Frame-support structure system with function capable of being restored |
| CN104652600A (en) * | 2015-02-25 | 2015-05-27 | 海南大学 | Recoverable function framework structure system |
| CN109024896A (en) * | 2018-07-26 | 2018-12-18 | 中交第航务工程局有限公司 | A kind of bilayer anticollision assembling type steel structure truss bars processing is anti-to pound canopy |
| CN109837988A (en) * | 2019-03-11 | 2019-06-04 | 大连理工大学 | A kind of ductility coupling beam waves steel frame system |
-
2021
- 2021-04-11 CN CN202110385845.7A patent/CN113374325A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104612243A (en) * | 2015-02-09 | 2015-05-13 | 海南大学 | Frame-support structure system with function capable of being restored |
| CN104652600A (en) * | 2015-02-25 | 2015-05-27 | 海南大学 | Recoverable function framework structure system |
| CN109024896A (en) * | 2018-07-26 | 2018-12-18 | 中交第航务工程局有限公司 | A kind of bilayer anticollision assembling type steel structure truss bars processing is anti-to pound canopy |
| CN109837988A (en) * | 2019-03-11 | 2019-06-04 | 大连理工大学 | A kind of ductility coupling beam waves steel frame system |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115758542A (en) * | 2022-11-30 | 2023-03-07 | 中国建筑西南设计研究院有限公司 | Spatial multi-ribbed steel beam floor system analysis method |
| CN115758542B (en) * | 2022-11-30 | 2023-08-08 | 中国建筑西南设计研究院有限公司 | Space multi-ribbed steel girder floor system analysis method |
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Application publication date: 20210910 |