CN109680879B - Reinforcing steel bar connector capable of improving continuous collapse resistance of RC frame structure - Google Patents
Reinforcing steel bar connector capable of improving continuous collapse resistance of RC frame structure Download PDFInfo
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- CN109680879B CN109680879B CN201910011044.7A CN201910011044A CN109680879B CN 109680879 B CN109680879 B CN 109680879B CN 201910011044 A CN201910011044 A CN 201910011044A CN 109680879 B CN109680879 B CN 109680879B
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- 229910001294 Reinforcing steel Inorganic materials 0.000 title abstract description 10
- 229910052751 metal Inorganic materials 0.000 claims abstract description 56
- 239000002184 metal Substances 0.000 claims abstract description 56
- 229910000831 Steel Inorganic materials 0.000 claims description 17
- 239000010959 steel Substances 0.000 claims description 17
- 230000003014 reinforcing effect Effects 0.000 claims description 15
- 239000000463 material Substances 0.000 claims description 8
- 238000013016 damping Methods 0.000 claims description 4
- 229910000838 Al alloy Inorganic materials 0.000 claims description 3
- 238000000137 annealing Methods 0.000 claims description 3
- 238000004364 calculation method Methods 0.000 claims description 3
- -1 copper-aluminum-manganese Chemical compound 0.000 claims description 3
- 229910001285 shape-memory alloy Inorganic materials 0.000 claims description 3
- 238000010276 construction Methods 0.000 claims description 2
- 229910000881 Cu alloy Inorganic materials 0.000 claims 1
- 238000000034 method Methods 0.000 abstract description 22
- 230000008569 process Effects 0.000 abstract description 14
- 230000007246 mechanism Effects 0.000 abstract description 10
- 239000011150 reinforced concrete Substances 0.000 abstract description 7
- 238000013461 design Methods 0.000 description 12
- 230000006378 damage Effects 0.000 description 10
- 230000001965 increasing effect Effects 0.000 description 8
- 238000005452 bending Methods 0.000 description 7
- 238000011160 research Methods 0.000 description 6
- 230000035939 shock Effects 0.000 description 6
- 230000009471 action Effects 0.000 description 5
- 238000006073 displacement reaction Methods 0.000 description 5
- 230000002708 enhancing effect Effects 0.000 description 4
- 239000004567 concrete Substances 0.000 description 3
- 238000010586 diagram Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 230000002787 reinforcement Effects 0.000 description 3
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 2
- 230000002411 adverse Effects 0.000 description 2
- 229910045601 alloy Inorganic materials 0.000 description 2
- 239000000956 alloy Substances 0.000 description 2
- 229910052802 copper Inorganic materials 0.000 description 2
- 239000010949 copper Substances 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 210000002435 tendon Anatomy 0.000 description 2
- 238000004458 analytical method Methods 0.000 description 1
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- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
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- 238000005265 energy consumption Methods 0.000 description 1
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- 238000011835 investigation Methods 0.000 description 1
- 238000002955 isolation Methods 0.000 description 1
- 230000021715 photosynthesis, light harvesting Effects 0.000 description 1
- 230000002028 premature Effects 0.000 description 1
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- 238000010008 shearing Methods 0.000 description 1
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04C—STRUCTURAL ELEMENTS; BUILDING MATERIALS
- E04C5/00—Reinforcing elements, e.g. for concrete; Auxiliary elements therefor
- E04C5/16—Auxiliary parts for reinforcements, e.g. connectors, spacers, stirrups
- E04C5/162—Connectors or means for connecting parts for reinforcements
- E04C5/163—Connectors or means for connecting parts for reinforcements the reinforcements running in one single direction
- E04C5/165—Coaxial connection by means of sleeves
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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
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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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- Business, Economics & Management (AREA)
- Emergency Management (AREA)
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- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Rod-Shaped Construction Members (AREA)
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Abstract
The invention provides a reinforcing steel bar connector for improving continuous collapse resistance of an RC (reinforced concrete) frame structure, which comprises a section of soft metal bar connected between two sections of frame beam longitudinal bars through a large sleeve and two small sleeves; the diameters of the soft metal ribs are the same as those of the component longitudinal ribs, two ends of the soft metal ribs are respectively connected with the two small sleeves, and two sections of frame beam longitudinal ribs are respectively connected with the other ends of the two small sleeves; holes with the same outer diameter as the longitudinal ribs of the frame beams are formed in two sides of the large sleeve, soft metal ribs are arranged on two sides of the large sleeve, the small sleeve and part of the longitudinal ribs of the frame beams are arranged in the large sleeve, and the outer ends of the longitudinal ribs of the frame beams penetrate through the holes of the large sleeve and extend out of the large sleeve. The soft metal bar used in the invention has higher elongation, can effectively enhance the ductility and continuity of the structure, and improves the rotation capability of the plastic hinge, so that the local stress of the longitudinal bar of the structure is not excessively large and is not broken too early in the plastic hinge forming process, and the beam is smoothly transited to a catenary mechanism, thereby effectively improving the continuous collapse resistance of the structure.
Description
Technical Field
The invention relates to the field of civil engineering, in particular to a steel bar connector for improving continuous collapse resistance of an RC frame structure.
Background
With the continuous improvement of engineering technology level and the rapid development of building structures, the structural safety is emphasized. The continuous collapse of the structure means that the structure is damaged by unexpected load in the use process, the collapse is locally generated, the collapse is spread to other parts of the structure, and when the residual structure cannot resist the stress change caused by the structural damage, the whole structure loses the bearing capacity, and then the structure collapses in a large range. In general, the final collapsed state may be referred to as continuous collapse when it is not proportional to the initial structural state. The causes of continuous collapse are generally divided into two categories: the first is collapse caused by seismic action. The second type is continuous collapse due to accidental actions such as explosion, impact, fire, etc.
The continuous collapse caused by earthquake and the continuous collapse accident under accidental action seriously threaten the life and property safety of people in the country, and bring adverse effects to society. Shock resistance and continuous collapse resistance have been the key subjects of expert scholars' research. At present, the students at home and abroad have relatively mature research results on the research of earthquake resistance and continuous collapse resistance respectively.
The continuous collapse endangers the property and personal safety of the nation and people, and brings serious adverse effects to society. The continuous collapse is caused by both earthquake and accidental action. The anti-seismic requirement structure is designed into a destruction mode of a strong column and weak beam, and the continuous collapse resistance requirement beam has certain drawknot capacity and deformation capacity, namely the requirement beam is strong, and the aim of enhancing the collapse resistance is achieved by increasing reinforcing bars of the beam in general. However, the anti-seismic requirement "weak beam of wall column" contradicts the method of achieving the purpose of resisting continuous collapse by increasing the reinforcement of the beam, and thus a method capable of improving the anti-seismic and continuous collapse resistance of the structure at the same time is required. In order to improve the shock resistance and the continuous collapse resistance of the structure at the same time, it is required that the plastic hinge first appears at the beam end during the destruction of the structure, and the rotation capability of the plastic hinge is improved.
In the aspect of earthquake resistance, besides the novel earthquake resistance technology of utilizing some earthquake isolation and energy dissipation, the energy consumption capability of the structure itself, namely, the rotation of utilizing the plastic hinge to dissipate the earthquake energy by forming the plastic hinge at a proper position, is widely paid attention. Researches show that in the concrete frame structure, earthquake energy can be dissipated through rotation of the plastic hinge at the beam end, and if the plastic hinge is firstly arranged at the column end, a collapse mechanism is easy to form, namely, the anti-seismic requirement reaches a damage mode of 'strong column and weak beam'. However, in the investigation of a certain earthquake, it is found that even if the earthquake-resistant design of the strong column and the weak beam is adopted, the real damage mechanism of the strong column and the weak beam is difficult to realize.
In the aspect of continuous collapse resistance, researches show that the continuous collapse resistance of the structure mainly depends on the bending resistance of horizontal members in the early stage and mainly depends on the catenary effect formed by longitudinal ribs in beams and floors in the later stage. The early stage depends on the bending resistance stage of the horizontal member to be short, so that the local drawknot capability and the deformation capability of the lower beam of the catenary mechanism are key in the collapse-resistant process of the concrete frame structure, and the beam is required to have better local drawknot capability and deformation capability, namely the beam is required to be 'strong'. The aim of enhancing the collapse resistance of the beam is generally achieved by increasing the reinforcement of the beam.
However, the anti-seismic requirement of 'strong column and weak beam' is contradictory to the method for achieving the purpose of continuous collapse resistance by increasing the reinforcement of the beam. Thus, how to simultaneously improve the anti-seismic performance and the collapse resistance of the structure becomes one of the hot spots of current research.
In the aspect of earthquake resistance, in order to achieve the destruction mode of 'strong column and weak beam', all national specifications are that the bending moment design value of the column end is artificially improved, and the bending bearing capacity of the column end is enhanced so that the plastic hinge is firstly arranged at the beam end. However, when collapse occurs, the designed structure is often broken too early due to overlarge local stress of the longitudinal ribs in the formation process of the plastic hinge at the beam end, so that the beam cannot smoothly enter a catenary stage, and the continuous collapse resistance of the structure is weakened. Thus, how to improve the continuity and ductility of a structure to enhance the continuous collapse resistance of the structure while ensuring that the structural plastic hinge first appears on the beam through construction measures has been an important issue in the design study of continuous collapse resistance.
Drawknot designs are the most commonly used method of resisting continuous collapse by enhancing the continuity of the damaged structure. The method does not need to carry out stress analysis on the structure, and is simple and easy to implement. However, in the specific design and implementation process of the drawknot strength method, the drawknot strength requirement is generally calculated based on a theoretical model of a catenary mechanism, if the ductility of the structure is insufficient, a damaged member is pulled and broken prematurely, and cannot enter a catenary stage, and the drawknot strength method is ineffective.
In summary, the existing anti-seismic and continuous collapse-resistant measures have a certain technical defect, so that a method is needed, and in the structural safety design, the ductility and the continuity of the structure are enhanced while the anti-seismic is considered, so that the anti-seismic and continuous collapse-resistant measures smoothly enter a catenary mechanism, and the aim of improving the continuous collapse-resistant performance is fulfilled.
Disclosure of Invention
The invention provides a reinforcing steel bar connector for improving the continuous collapse resistance of an RC (reinforced concrete) frame structure, which has higher elongation of soft metal bars, can effectively enhance the ductility and continuity of the structure, improves the rotation capacity of a plastic hinge, ensures that the local stress of longitudinal bars of the structure is not excessively large and is not broken too early in the plastic hinge forming process, and ensures that a beam is smoothly transited to a catenary mechanism, thereby effectively improving the continuous collapse resistance of the structure.
The invention comprises a section of soft metal bar which is connected between two sections of frame beam longitudinal bars through a large sleeve and two small sleeves; the diameters of the soft metal ribs are the same as those of the component longitudinal ribs, two ends of the soft metal ribs are respectively connected with the two small sleeves, and two sections of frame beam longitudinal ribs are respectively connected with the other ends of the two small sleeves; holes with the same outer diameter as the longitudinal ribs of the frame beams are formed in two sides of the large sleeve, soft metal ribs are arranged on two sides of the large sleeve, the small sleeve and part of the longitudinal ribs of the frame beams are arranged in the large sleeve, and the outer ends of the longitudinal ribs of the frame beams penetrate through the holes of the large sleeve and extend out of the large sleeve.
The large sleeve has sufficient strength and rigidity and the small sleeve is a conventional threaded sleeve.
The large sleeve consists of two parts which are connected through threads in the middle of the side wall.
Holes with the diameter slightly larger than that of the longitudinal ribs of the frame beam and slightly smaller than that of the small sleeve are formed in two sides of the large sleeve.
The diameter of the inner wall of the large sleeve should meet the strength and rigidity requirements of not being damaged before the longitudinal ribs of the frame beam, and the length of the inner cavity should meet the length requirements of two small sleeves plus one section of soft metal rib plus two sections of interval.
The wall thickness of the two sides of the large sleeve with holes should meet the strength and rigidity requirements not to be damaged before the longitudinal ribs of the frame beams.
The small sleeve should meet the strength and rigidity requirements that do not precede the failure of the "soft" metal bars and the frame beam longitudinal bars.
The soft metal bar is a metal bar with higher elongation and lower tensile strength than external longitudinal bars, can be obtained by annealing common steel bars, and can also be made of copper, aluminum alloy and other alloy bars.
The soft metal rib has strong designability and can be designed with mechanical properties according to different requirements. The ductility and length of the "soft" metal tendon can be calculated and determined, for example, based on the design position of the plastic hinge. Different materials can be designed according to the requirements, for example, damping materials are used for improving the earthquake resistance, and materials such as copper-aluminum-manganese shape memory alloy and the like are used for improving the structural restorability and the like.
The diameter of the soft metal rib is the same as that of the longitudinal rib of the component.
The length of the soft metal bar (the distance between the two small sleeves) is calculated by the elongation, and the calculation formula is as follows:
the "soft" metal bars have a yield strength and a tensile strength that are less than the yield strength and the tensile strength of the longitudinal bars of the component.
The invention has the beneficial effects that: with sacrificial "soft" metal ribs, in terms of shock resistance: first ensuring that the plastic hinge first appears at the beam end; secondly, the positions of the steel bar connectors can be flexibly designed, and the positions of the plastic hinges are transferred; thirdly, the performance of the connector can be flexibly designed, and the characteristics of the plastic hinge can be adjusted. The position and the characteristics of the plastic hinge have great influence on the shock resistance of the structure. Thereby increasing the shock resistance of the structure and enhancing the flexibility of the shock resistant design; in terms of resistance to continuous collapse: the deformation capability of the component is enhanced, so that the rotation capability of the plastic hinge is improved, the structure is smoothly transited to a catenary mechanism, the continuous collapse resistance of the structure is further improved, and the plastic hinge is suitable for reinforced concrete frame structures.
Drawings
FIG. 1 is a schematic diagram of the structure of the present invention.
Fig. 2 isbase:Sub>A cross-sectional viewbase:Sub>A-base:Sub>A of fig. 1.
Fig. 3 is a schematic diagram of the application of the present invention.
Fig. 4 is a schematic diagram of a displacement load curve according to the present invention.
Fig. 5 is a graph comparing load displacement curves of a frame substructure using the present invention and a frame substructure not using the present invention.
Detailed Description
The invention is further described below with reference to the accompanying drawings.
The structure of the invention is shown in figure 1, and the sectional view A-A in figure 1 is shown in figure 2, and comprisesbase:Sub>A section of soft metal bar 3 connected between two sections of frame beam longitudinal bars 4 throughbase:Sub>A large sleeve 1 and two small sleeves 2; the diameter of the soft metal rib 3 is the same as that of the component longitudinal rib 4, two ends of the soft metal rib 3 are respectively connected with the two small sleeves 2, and two sections of frame beam longitudinal ribs 4 are respectively connected with the other ends of the two small sleeves 2; holes with the same outer diameter as the longitudinal ribs 4 of the frame beams are formed in two sides of the large sleeve 1, soft metal ribs 3 are arranged on two sides of the large sleeve 1, the small sleeve 2 and part of the longitudinal ribs 4 of the frame beams are arranged in the large sleeve 1, and the outer ends of the longitudinal ribs 4 of the frame beams penetrate through the holes of the large sleeve 1 and extend out of the large sleeve 1.
The large sleeve has sufficient strength and rigidity and the small sleeve is a conventional threaded sleeve.
The large sleeve consists of two parts which are connected through threads in the middle of the side wall.
Holes with the diameter slightly larger than that of the longitudinal ribs of the frame beam and slightly smaller than that of the small sleeve are formed in two sides of the large sleeve.
The diameter of the inner wall of the large sleeve should meet the strength and rigidity requirements of not being damaged before the longitudinal ribs of the frame beam, and the length of the inner cavity should meet the length requirements of two small sleeves plus one section of soft metal rib plus two sections of interval.
The wall thickness of the two sides of the large sleeve with holes should meet the strength and rigidity requirements not to be damaged before the longitudinal ribs of the frame beams.
The small sleeve should meet the strength and rigidity requirements that do not precede the failure of the "soft" metal bars and the frame beam longitudinal bars.
The soft metal bar is a metal bar with higher elongation and lower tensile strength than external longitudinal bars, can be obtained by annealing common steel bars, and can also be made of copper, aluminum alloy and other alloy bars.
The soft metal rib has strong designability and can be designed with mechanical properties according to different requirements. The ductility and length of the "soft" metal tendon can be calculated and determined, for example, based on the design position of the plastic hinge. Different materials can be designed according to the requirements, for example, damping materials are used for improving the earthquake resistance, and materials such as copper-aluminum-manganese shape memory alloy and the like are used for improving the structural restorability and the like.
The diameter of the soft metal rib is the same as that of the longitudinal rib of the component.
The length of the soft metal bar (the distance between the two small sleeves) is calculated by the elongation, and the calculation formula is as follows:
the "soft" metal bars have a yield strength and a tensile strength that are less than the yield strength and the tensile strength of the longitudinal bars of the component.
As shown in fig. 3, the reinforcing bar connector of the present invention is disposed at the upper and lower longitudinal bars of the beam near the column end, and the reinforcing bar connector of the upper longitudinal bar is disposed closer to the column end than the reinforcing bar connector of the lower longitudinal bar, because the shearing damage of the plastic hinge area is prevented as much as possible under the vertical load, and the serious compression damage of the beam section is avoided because the strength of the soft metal bar is weaker. The yield strength and the tensile strength of the soft metal bar are slightly smaller than those of the longitudinal bar, in the normal use process, the structure mainly bears vertical load, the born bending moment is smaller, and the soft metal bar weakens the bearing capacity of the beam to a certain extent, but does not generate yield damage, so that the normal use can be met.
When an earthquake occurs, under the action of the earthquake, the beam bears larger bending moment, the soft metal ribs weaken the bending bearing capacity of the beam to a certain extent, and plastic hinges are formed at the section where the invention is arranged, so that a damage mode of strong columns and weak beams is formed, and the anti-seismic design is met. Therefore, the position of the plastic hinge of the structure can be transferred by changing the arrangement position of the plastic hinge in the structure, and the time of the plastic hinge can be controlled by designing the yield strength ratio, the elongation ratio and the like of the soft metal bar and the longitudinal bar. Therefore, the earthquake resistance of the building is enhanced, and the earthquake-resistant design is more flexible and variable.
When collapse occurs, the soft metal bar has higher ductility and higher deformability, and plays a role in protecting the longitudinal bar in the plastic hinge forming process: the soft metal bars in the steel bar connector of the invention are firstly yield-damaged in the collapse process, and then the longitudinal bars start to work normally. The soft metal rib is sacrificed, so that the local stress of the longitudinal rib can not be excessive, and therefore, the longitudinal rib can not be broken before the frame enters the catenary stage, and the smooth transition to the catenary mechanism is ensured. And the plastic hinge rotation capacity can be increased, and the plastic hinge has great benefit in resisting continuous collapse.
As shown in fig. 4, a graph of displacement load curve of the common reinforcing steel bar and the reinforcing steel bar connected with the reinforcing steel bar connector of the present invention is compared.
As shown in the figure (a), the common steel bar has only one obvious yielding section ab in the tensioning process. In the tensioning process of the steel bars provided with the novel steel bar connector, two yield steps can appear in sequence along with the increase of load. As shown in the figure (b), the cd section is a tensile yield stage of the soft steel bar, and after the length of the soft steel bar is designed, when the soft steel bar is stretched to a certain length, the soft steel bar breaks when the small sleeve contacts the inner wall of the large sleeve, the longitudinal steel bar connected with the small sleeve is in relay, the tension is continuously born, and as the load is continuously increased, a second yield stage ef occurs.
As can be seen from fig. 4, in the tensile process, the "soft" metal rib is sacrificed first, the larger elongation of the "soft" metal rib is utilized, the yield and fracture of the longitudinal rib are fully delayed in the process of slowly increasing the load, and the plastic hinge forming part of the structure can be deformed more greatly when the collapse occurs, so that the local stress of the longitudinal rib is reduced, the premature failure of the longitudinal rib is prevented, and the structure is smoothly transited to the catenary mechanism.
As shown in fig. 5, a graph is shown comparing displacement load curves of a frame substructure using a general reinforcing bar and a frame substructure using a novel reinforcing bar coupler of the present invention to connect reinforcing bars when a center pillar is vertically loaded. Wherein, curve 1 corresponds to a frame substructure using ordinary rebar and curve 2 is a frame substructure using the novel rebar connector of the present invention to connect rebar.
As can be seen from fig. 5, the frame substructure equipped with the novel reinforcing steel bar connector of the present invention has a slightly lower bearing capacity than that of the frame substructure of the common reinforcing steel bar in the initial stage, and meets the "strong column and weak beam" failure mode in the earthquake-proof design; in the process of entering the catenary stage in the later stage, the frame substructure provided with the novel sleeve has larger bearing capacity, and the displacement of the center pillar when the first reinforcing steel bar breaks is larger, so that the deformation capacity of the center pillar is larger.
Therefore, the novel steel bar connector can effectively improve the anti-seismic performance and the continuous collapse resistance of the frame substructure.
The soft metal bars can be annealed or damping materials are used for processing the steel bars with different types to meet the use requirement of the invention, and the length of the soft metal bars is also changed differently according to different requirements, so that the steel bar connector for improving the continuous collapse resistance of the concrete frame structure can also make partial structural changes according to the soft metal bars, and the invention automatically comprises the changes if the changes are still in the claims of the invention.
Claims (8)
1. The utility model provides an improve reinforcing bar connector of RC frame construction anti continuous collapse ability which characterized in that: comprises a section of soft metal bar (3) which is connected between two sections of frame beam longitudinal bars (4) through a big sleeve (1) and two small sleeves (2); the diameters of the soft metal ribs (3) and the component longitudinal ribs (4) are the same, two ends of the soft metal ribs (3) are respectively connected with the two small sleeves (2), and two sections of frame beam longitudinal ribs (4) are respectively connected with the other ends of the two small sleeves (2); holes with the same outer diameter as the frame beam longitudinal ribs (4) are formed in two sides of the large sleeve (1), soft metal ribs (3) are arranged on the two sides of the large sleeve (1), the small sleeve (2) and part of the frame beam longitudinal ribs (4) are arranged in the large sleeve (1), and the outer ends of the frame beam longitudinal ribs (4) penetrate through the holes of the large sleeve (1) and extend out of the large sleeve (1).
2. The reinforcing bar coupler for improving the resistance to continuous collapse of an RC frame structure of claim 1, wherein: the large sleeve (1) consists of two parts which are connected through threads in the middle of the side wall.
3. The reinforcing bar coupler for improving the resistance to continuous collapse of an RC frame structure of claim 1, wherein: the soft metal bar (3) is a metal bar with higher elongation and lower tensile strength and yield strength than the external longitudinal bar.
4. A reinforcing bar coupler for improving resistance to continuous collapse of an RC frame structure according to claim 3, wherein: the soft metal bar (3) is a steel bar obtained through annealing treatment.
5. A reinforcing bar coupler for improving resistance to continuous collapse of an RC frame structure according to claim 3, wherein: the soft metal bar (3) is a copper alloy or aluminum alloy bar.
6. The reinforcing bar coupler for improving the resistance to continuous collapse of an RC frame structure of claim 1, wherein: the soft metal ribs (3) are made of damping materials.
7. A reinforcing bar coupler for improving resistance to continuous collapse of an RC frame structure according to claim 3, wherein: the soft metal ribs (3) are made of copper-aluminum-manganese shape memory alloy.
8. The reinforcing bar coupler for improving the resistance to continuous collapse of an RC frame structure of claim 1, wherein: the distance L between the two small sleeves (2) is calculated by the elongation, and the calculation formula is as follows:
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910011044.7A CN109680879B (en) | 2019-01-07 | 2019-01-07 | Reinforcing steel bar connector capable of improving continuous collapse resistance of RC frame structure |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201910011044.7A CN109680879B (en) | 2019-01-07 | 2019-01-07 | Reinforcing steel bar connector capable of improving continuous collapse resistance of RC frame structure |
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| CN109680879A CN109680879A (en) | 2019-04-26 |
| CN109680879B true CN109680879B (en) | 2023-04-25 |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN114036602B (en) * | 2020-11-26 | 2024-08-16 | 同济大学 | Design method for continuous collapse resistance of structure and ultimate bearing capacity calculation method |
| CN115506478A (en) * | 2022-09-28 | 2022-12-23 | 安徽省建筑科学研究设计院 | RC frame structure with multiple resistance |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6631592B1 (en) * | 1998-04-18 | 2003-10-14 | Dee Associates (Business Consultants) Ltd. | Fail-safe device |
| CN203977714U (en) * | 2014-07-18 | 2014-12-03 | 济南大学 | For concrete structure FRP muscle plastic hinge connector |
| CN106284852A (en) * | 2016-10-13 | 2017-01-04 | 哈尔滨工业大学 | A kind of reinforcing bar connector of plane position adjustable |
| CN108560834A (en) * | 2018-06-19 | 2018-09-21 | 宁波圣钢科技发展有限公司 | Reinforcing steel bar connecting device |
| CN108824697A (en) * | 2018-08-27 | 2018-11-16 | 清华大学 | The rc-frame-beam structure of structure composition collapse resistant capacity can be improved |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CA2750232C (en) * | 2008-01-16 | 2012-10-02 | Jason M. Weaver | Bar coupling apparatus and methods |
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- 2019-01-07 CN CN201910011044.7A patent/CN109680879B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6631592B1 (en) * | 1998-04-18 | 2003-10-14 | Dee Associates (Business Consultants) Ltd. | Fail-safe device |
| CN203977714U (en) * | 2014-07-18 | 2014-12-03 | 济南大学 | For concrete structure FRP muscle plastic hinge connector |
| CN106284852A (en) * | 2016-10-13 | 2017-01-04 | 哈尔滨工业大学 | A kind of reinforcing bar connector of plane position adjustable |
| CN108560834A (en) * | 2018-06-19 | 2018-09-21 | 宁波圣钢科技发展有限公司 | Reinforcing steel bar connecting device |
| CN108824697A (en) * | 2018-08-27 | 2018-11-16 | 清华大学 | The rc-frame-beam structure of structure composition collapse resistant capacity can be improved |
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