CN114197681A - Grouting-free bar energy consumption device - Google Patents
Grouting-free bar energy consumption device Download PDFInfo
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- CN114197681A CN114197681A CN202210073721.XA CN202210073721A CN114197681A CN 114197681 A CN114197681 A CN 114197681A CN 202210073721 A CN202210073721 A CN 202210073721A CN 114197681 A CN114197681 A CN 114197681A
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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
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01D—CONSTRUCTION OF BRIDGES, ELEVATED ROADWAYS OR VIADUCTS; ASSEMBLY OF BRIDGES
- E01D19/00—Structural or constructional details of bridges
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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
- 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
- E04H9/022—Bearing, supporting or connecting constructions specially adapted for such buildings and comprising laminated structures of alternating elastomeric and rigid layers
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- Engineering & Computer Science (AREA)
- Architecture (AREA)
- Environmental & Geological Engineering (AREA)
- Business, Economics & Management (AREA)
- Emergency Management (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Reinforcement Elements For Buildings (AREA)
Abstract
The invention discloses a grouting-free bar energy consumption device, which comprises an energy consumption bar, an inner reinforcing connecting section, an outer restraining sleeve and an outer connecting section, wherein the inner reinforcing connecting section is arranged on the inner reinforcing connecting section; the energy-consuming bar comprises an energy-consuming deformation section in the middle and extrusion connecting sections at two ends; the diameters of the energy consumption deformation section and the extrusion connecting section are the same; the internal reinforced connecting section comprises an extrusion section and an external thread connecting section, and an extrusion hole is formed in the extrusion section; the extrusion connecting section of the energy-consuming bar is positioned in the extrusion hole, and the periphery of the extrusion section is subjected to annular extrusion so that the energy-consuming bar is connected with the inner reinforcing connecting section; the external connecting section comprises a restraining section and a thread section, a restraining barrel and an internal thread section are designed in the external connecting section, the external thread connecting section is connected into the internal thread section, and the extruding section is positioned in the restraining barrel; the outer layer of the energy dissipation bar is sleeved with the outer constraint sleeve, two ends of the outer constraint sleeve are positioned in the constraint cylinder, and a certain deformation gap is formed between the outer constraint sleeve and the extrusion section. The energy-consuming bar material is not weakened in the energy-consuming deformation section, and grouting is not needed between the energy-consuming bar material and the outer constraint sleeve.
Description
Technical Field
The invention relates to the technical field of engineering structure earthquake resistance, in particular to a grouting-free bar energy consumption device.
Background
Energy dissipation and shock absorption technologies are currently widely applied to building structures and bridge engineering in high-intensity areas to alleviate earthquake disasters. As one of mature energy consumption devices, the metal damper is widely applied to practical engineering due to simple processing, stable performance and strong environmental adaptability. The buckling restrained bar material energy dissipation device is an axial energy dissipation element which can achieve full-section yielding under the tension and compression stress, has stable hysteretic behavior under the action of an earthquake, has dual structural functions by the characteristic, can provide necessary lateral stiffness for the structure, can play the role of energy dissipation, and is one of the current more ideal energy dissipation devices.
However, in order to solve the constraint effect of the outer sleeve on the energy-consuming bar, the traditional buckling-constraint bar energy-consuming device is usually implemented by grouting between the outer sleeve and the energy-consuming bar, and although the manufacturing cost is low, the following outstanding problems exist: (1) grouting quality is not easy to control, and the periphery of the energy-consuming bar is difficult to ensure to have equally spaced gaps to coordinate compression deformation of the bar, so that the energy-consuming bar is easy to cause obvious local buckling under repeated tension-compression deformation to reduce fatigue performance; (2) in order to concentrate the deformation entirely on the energy dissipating bar, the middle section of the energy dissipating bar is usually weakened. The design method not only increases the processing difficulty, but also causes the waste of materials.
CN 106760855B discloses a bamboo-shaped round rod energy dissipation rod, which is designed into a bamboo-shaped shape, and no grouting or extra parts are needed between an external constraint component and a round energy dissipation rod to constrain the rod, so that the energy dissipation rod has a simple structure, but the bamboo-shaped rod also needs to weaken the energy dissipation part.
Disclosure of Invention
The invention provides a grouting-free bar energy consumption device, which solves the problems of complex processing and poor low-cycle fatigue performance of the traditional grouting type buckling restrained bar energy consumption device and also solves the problem of material waste caused by weakened section of a bar.
The technical scheme adopted by the invention is as follows: there is provided a groutless rod energy dissipation device, comprising:
the energy-consuming rod comprises an energy-consuming rod, an inner reinforcing connecting section, an outer restraining sleeve and an outer connecting section;
the energy-consuming bar comprises an energy-consuming deformation section in the middle and extrusion connecting sections at two ends; the diameters of the energy consumption deformation section and the extrusion connecting section are the same;
the inner reinforced connecting section comprises an extrusion section and an external thread connecting section, and an extrusion hole is formed in the extrusion section; the extrusion connecting section of the energy-consuming bar is positioned in the extrusion hole, and the periphery of the extrusion section is subjected to annular extrusion to enable the energy-consuming bar to be connected with the inner reinforcing connecting section;
the external connecting section comprises a restraining section and a thread section, a restraining barrel and an internal thread section are designed in the external connecting section, the external thread connecting section is connected into the internal thread section, and the extrusion section is positioned in the restraining barrel;
the outer constraint sleeve is sleeved on the outer layer of the energy dissipation bar, and two ends of the outer constraint sleeve are positioned in the constraint cylinder and have a certain deformation gap with the extrusion section.
Furthermore, grouting is not needed between the energy consumption bar and the outer constraint sleeve, and only a certain gap is set.
Furthermore, the external restraint sleeve is also provided with a positioning screw hole; the positioning screw limits deformation between the energy consumption bar and the outer constraint sleeve through the positioning screw hole.
Further, the energy-consuming bar material is made of a steel bar or a shape memory alloy bar.
The invention has the beneficial effects that:
(1) the energy-consuming bar material does not need to be weakened in the energy-consuming deformation section, and is connected in a mode of annularly extruding the end part and the inner reinforcing connecting section to realize end part reinforcing, so that material waste is avoided. The outer constraint sleeve directly constrains the energy dissipation bar without grouting, so that the construction difficulty is reduced, the quality of the energy dissipation device is reduced, and the fatigue performance of the energy dissipation device is improved.
(2) The whole energy consumption device is formed by an assembly mode, and the construction is simple and convenient. And a positioning screw is arranged between the energy consumption bar and the outer constraint sleeve, so that the deformation gap between the energy consumption bar and the outer constraint sleeve is conveniently controlled. The outer connecting section also has a restraining effect on the outer restraining pipe, so that the whole energy consumption device can still normally work under the bending effect.
Drawings
FIG. 1 is a front view of a groutless bar energy consuming device as disclosed herein;
FIG. 2 is a cross-sectional view taken along line A-A of FIG. 1;
FIG. 3 is a cross-sectional view taken along line B-B of FIG. 1;
FIG. 4 is a cross-sectional view taken along line C-C of FIG. 1;
FIG. 5 is a cross-sectional view taken along line D-D of FIG. 1;
FIG. 6 is a schematic view of the connection of the energy dissipating bar material with the inner reinforcing connecting section according to the present disclosure;
fig. 7 shows a schematic structural view of the energy dissipating bar of fig. 6;
FIG. 8 is a schematic structural view of an externally constraining sheath of the present disclosure;
FIG. 9 is a schematic structural diagram of a groutless bar energy dissipation device disclosed in the present invention;
FIG. 10 shows a schematic structural view of the set screw of FIG. 9;
FIG. 11 is a schematic structural view of an internally reinforced connector segment according to the present disclosure;
FIG. 12 is an elevation view of an internally reinforced connector segment of the present disclosure;
FIG. 13 shows a cross-sectional view of FIG. 12 along line E-E;
FIG. 14 is a schematic structural view of an outer connecting segment according to the present disclosure;
FIG. 15 is an elevation view of an outer connecting segment of the present disclosure;
fig. 16 shows a cross-sectional view of fig. 15 along the line F-F.
Reference numerals: 1. energy dissipation bars; 11. an energy consumption deformation section; 12. extruding the connecting section; 2. an inner reinforcing connecting section; 21. an extrusion section; 22. extruding the hole; 23. an external thread connecting section; 3. an outer constraint sleeve; 31. a constrained region; 32. positioning the screw hole; 4. an outer connecting section; 41. a restraint section; 42. a restraint cylinder; 43. an internal thread section; 44. a threaded segment; 5. and (5) positioning the screw.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention clearer, the present invention will be described in further detail below with reference to the accompanying drawings, but embodiments of the present invention are not limited thereto.
Example 1:
referring to fig. 1 to 16, the present embodiment discloses a groutless rod energy dissipation device, which includes an energy dissipation rod 1, an inner reinforcement connection section 2, an outer constraint sleeve 3, and an outer connection section 4.
Referring to fig. 7, the energy-consuming bar 1 includes an energy-consuming deformation section 11 in the middle and extrusion connection sections 12 at both ends; the diameter of the energy consumption deformation section 11 is the same as that of the extrusion connecting section 12. The energy-consuming bar material 1 is preferably made of a steel bar or a shape memory alloy bar.
Referring to fig. 11 to 13, the inner reinforcing connecting section 2 includes an extruding section 21 and an external threaded connecting section 23, the extruding section 21 is provided with an extruding hole 22, and the diameter of the extruding hole 22 is slightly larger than that of the extruding connecting section 12 of the energy consumption bar material 1. Referring to fig. 2 and 6, the extrusion connecting section 12 of the energy-consuming bar material 1 is located in the extrusion hole 22, and hoop extrusion is performed on the periphery of the extrusion section 21, so that the energy-consuming bar material 1 and the inner reinforcing connecting section 2 are connected together. After extrusion, the adhesive force generated between the extrusion connecting section 12 and the extrusion section 21 is larger than the ultimate bearing capacity of the energy consumption deformation section 11. The connection mode enables deformation to be concentrated at the middle part of the energy dissipation bar 1 by strengthening the end part, and the energy dissipation deformation section 11 of the energy dissipation bar 1 does not need to be weakened. The processing sequence of the internal reinforcing connecting section 2 is firstly connected with the energy consumption bar 1 in an extrusion mode, and then the external thread connecting section 23 is processed, so that the processing is easy, and the processing cost is low.
Referring to fig. 14-16, the external connection section 4 includes a restraint section 41 and a threaded section 44, and a restraint cylinder 42 and an internal threaded section 43 are designed inside the external connection section 4. Wherein the restraining section 41 and the restraining barrel 42 are used for restraining the outer restraining sleeve 3; the internal thread section 43 is intended to be connected to the external thread connecting section 23 of the internal reinforcing connecting section 2, while the thread section 44 is intended to be fitted in practice. Referring to fig. 2, the externally threaded connecting section 23 is connected to the internally threaded section 43, and the extruding section 21 is located in the restraining cylinder 42.
Referring to fig. 2 and 8, the outer constraint sleeve 3 is sleeved on the outer layer of the energy dissipation bar 1, the middle part of the outer constraint sleeve 3 is a constraint area 31, two ends of the outer constraint sleeve 3 are located in the constraint cylinder 42, and a certain deformation gap is formed between the two ends of the outer constraint sleeve 3 and the extrusion section 21, so that deformation of the energy dissipation bar 1 when being pressed can be coordinated. Grouting is not needed between the energy dissipation bar 1 and the outer constraint sleeve 3, and only a certain gap is set.
Further, referring to fig. 8-10, in order to limit the sliding of the outer constraint sleeve 3, the groutless rod energy dissipation device of the present embodiment further includes a set screw 5, and a set screw hole 32 is provided on the outer constraint sleeve 3. The positioning screw 5 can play a role in fixing the gap between the outer constraint sleeve 3 and the energy dissipation bar 1, and the positioning screw 5 limits the deformation between the energy dissipation bar 1 and the outer constraint sleeve 3 through the positioning screw hole 32.
The energy-consuming bar in the embodiment does not need to be weakened in the energy-consuming deformation section, and is connected in the annular extrusion mode of the end part and the inner reinforcing connecting section, so that the end part is reinforced, and material waste is avoided. The outer constraint sleeve directly constrains the energy dissipation bar without grouting, so that the construction difficulty is reduced, the quality of the energy dissipation device is reduced, and the fatigue performance of the energy dissipation device is improved. And a positioning screw is arranged between the energy consumption bar and the outer constraint sleeve, so that the deformation gap between the energy consumption bar and the outer constraint sleeve is conveniently controlled. The outer connecting section also has a restraining effect on the outer restraining pipe, so that the whole energy consumption device can still normally work under the bending effect. The whole energy consumption device is formed by an assembly mode, and the construction is simple and convenient.
The above examples are only intended to illustrate the technical solution of the present invention, but not to limit it; although the invention has been described in detail with reference to the foregoing embodiments, it will be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; and such modifications or substitutions do not depart from the spirit and scope of the corresponding technical solutions of the embodiments of the present invention.
Claims (4)
1. A groutless rod energy dissipation device, comprising:
the energy-consuming rod comprises an energy-consuming bar (1), an inner reinforcing connecting section (2), an outer constraint sleeve (3) and an outer connecting section (4);
the energy-consuming bar (1) comprises an energy-consuming deformation section (11) positioned in the middle and extrusion connecting sections (12) positioned at two ends; the diameters of the energy consumption deformation section (11) and the extrusion connecting section (12) are the same;
the inner reinforcing connecting section (2) comprises an extrusion section (21) and an external thread connecting section (23), and an extrusion hole (22) is formed in the extrusion section (21); the extrusion connecting section (12) of the energy-consuming bar (1) is positioned in the extrusion hole (22), and the periphery of the extrusion section (21) is subjected to hoop extrusion to enable the energy-consuming bar (1) and the inner reinforcing connecting section (2) to be connected together;
the external connecting section (4) comprises a restraining section (41) and a threaded section (44), a restraining barrel (42) and an internal threaded section (43) are designed inside the external connecting section (4), the external threaded connecting section (23) is connected into the internal threaded section (43), and the extruding section (21) is located inside the restraining barrel (42);
the outer constraint sleeve (3) is sleeved on the outer layer of the energy dissipation bar (1), two ends of the outer constraint sleeve (3) are located in the constraint cylinder (42), and a certain deformation gap is formed between the outer constraint sleeve and the extrusion section (21).
2. The groutless bar energy dissipation device of claim 1, wherein no grouting is needed between the energy dissipation bar (1) and the outer constraining sheath (3), only a certain gap is needed.
3. The groutless bar energy consuming device of claim 1, further comprising a positioning screw (5), wherein the outer restraining sleeve (3) is provided with a positioning screw hole (32); the positioning screw (5) limits the deformation between the energy consumption bar (1) and the outer constraint sleeve (3) through a positioning screw hole (32).
4. The groutless bar energy consuming device of claim 1, wherein the energy consuming bar (1) is made of a steel bar or a shape memory alloy bar.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210073721.XA CN114197681B (en) | 2022-01-21 | 2022-01-21 | Grouting-free bar energy consumption device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210073721.XA CN114197681B (en) | 2022-01-21 | 2022-01-21 | Grouting-free bar energy consumption device |
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| Publication Number | Publication Date |
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| CN114197681A true CN114197681A (en) | 2022-03-18 |
| CN114197681B CN114197681B (en) | 2022-08-19 |
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| CN202210073721.XA Active CN114197681B (en) | 2022-01-21 | 2022-01-21 | Grouting-free bar energy consumption device |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2008115480A1 (en) * | 2007-03-19 | 2008-09-25 | Kazak Composites, Incorporated | Buckling restrained brace for structural reinforcement and seismic energy dissipation |
| CN204060749U (en) * | 2014-08-01 | 2014-12-31 | 中国科学院、水利部成都山地灾害与环境研究所 | A kind of constant resistance and large deformation anchor rod/anchor cable |
| CN106836927A (en) * | 2017-01-25 | 2017-06-13 | 东南大学 | Pole power consumption bar |
| CN107842124A (en) * | 2017-11-14 | 2018-03-27 | 东南大学 | A kind of induced damage Observable ring power consumption bar |
| CN107965066A (en) * | 2017-11-14 | 2018-04-27 | 东南大学 | A kind of induced damage Observable energy consumption bar |
-
2022
- 2022-01-21 CN CN202210073721.XA patent/CN114197681B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2008115480A1 (en) * | 2007-03-19 | 2008-09-25 | Kazak Composites, Incorporated | Buckling restrained brace for structural reinforcement and seismic energy dissipation |
| CN204060749U (en) * | 2014-08-01 | 2014-12-31 | 中国科学院、水利部成都山地灾害与环境研究所 | A kind of constant resistance and large deformation anchor rod/anchor cable |
| CN106836927A (en) * | 2017-01-25 | 2017-06-13 | 东南大学 | Pole power consumption bar |
| CN107842124A (en) * | 2017-11-14 | 2018-03-27 | 东南大学 | A kind of induced damage Observable ring power consumption bar |
| CN107965066A (en) * | 2017-11-14 | 2018-04-27 | 东南大学 | A kind of induced damage Observable energy consumption bar |
Non-Patent Citations (1)
| Title |
|---|
| 董金芝: "基于大直径SMA棒材自复位装置的试验研究", 《结构工程师》 * |
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| CN114197681B (en) | 2022-08-19 |
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