CN113737978B - Support type damping connecting device and pin frame of frame middle part node - Google Patents
Support type damping connecting device and pin frame of frame middle part node Download PDFInfo
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- CN113737978B CN113737978B CN202111107344.9A CN202111107344A CN113737978B CN 113737978 B CN113737978 B CN 113737978B CN 202111107344 A CN202111107344 A CN 202111107344A CN 113737978 B CN113737978 B CN 113737978B
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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
- 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
- E04B1/18—Structures comprising elongated load-supporting parts, e.g. columns, girders, skeletons
- E04B1/20—Structures comprising elongated load-supporting parts, e.g. columns, girders, skeletons the supporting parts consisting of concrete, e.g. reinforced concrete, or other stonelike material
- E04B1/21—Connections specially adapted therefor
- E04B1/215—Connections specially adapted therefor comprising metallic plates or parts
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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
- E04B1/18—Structures comprising elongated load-supporting parts, e.g. columns, girders, skeletons
- E04B1/20—Structures comprising elongated load-supporting parts, e.g. columns, girders, skeletons the supporting parts consisting of concrete, e.g. reinforced concrete, or other stonelike material
- E04B1/22—Structures comprising elongated load-supporting parts, e.g. columns, girders, skeletons the supporting parts consisting of concrete, e.g. reinforced concrete, or other stonelike material with parts being prestressed
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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
- E04H9/0237—Structural braces with damping devices
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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
- E04H9/025—Structures with concrete columns
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- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Business, Economics & Management (AREA)
- Emergency Management (AREA)
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Buildings Adapted To Withstand Abnormal External Influences (AREA)
- Vibration Prevention Devices (AREA)
Abstract
The utility model provides a support type damping connecting device of frame middle part node, relates to building frame node technical field, including the node body, the node body is equipped with node steel skeleton, pre-buried steel sheet, prestressing steel bar, damping node board, support type attenuator. A pin frame is characterized in that supporting type damping connecting devices are respectively arranged at nodes of the pin frame, and damping node plates of 2 supporting type damping connecting devices opposite to each other at opposite diagonal positions are connected through supporting type dampers. The invention is suitable for node connection when the support type damper is arranged in the middle of a newly-built RC frame, and enhances the node bearing capacity and the self-recovery capacity after the earthquake in two aspects of improving the opening and closing effect to ensure the efficient utilization of the damper and arranging a novel node structure.
Description
Technical Field
The invention relates to the technical field of building frame nodes, in particular to a supporting type damping connecting device for a middle node of a frame and a pin frame.
Background
The earthquake action is mainly considered in the design of a building structure, and the energy dissipation and shock absorption technology can be applied to buildings except that the self structure resists the horizontal force of the earthquake. With the improvement of the economic development level of China, the earthquake resistance requirements of a plurality of cities are changed in a lifting manner, the earthquake action is more emphasized in the design of a building structure, and the energy dissipation and shock absorption technology development is positively promoted.
The energy dissipation and shock absorption technology is mainly characterized in that a damper with a specific structure is arranged, and energy can be dissipated through the change of displacement or speed of the damper under the action of an earthquake, so that the purpose of protecting a main body structure is achieved. The dampers are typically connected to the frame nodes or columns by support rods and node plates to work in conjunction with the frame structure. At the frame beam column and the node connected with the damper, the opening and closing effect can be generated due to the axial force action of the supporting damper on the frame system. The open-close effect is generated according to the following principle:
taking the earthquake action from left to right as an example, the frame beam is subjected to vertical downward shearing force, so that the frame beam generates upward micro deformation in a plane; the frame column is subjected to horizontal leftward shearing force, so that the frame column is slightly deformed rightward in a plane. The deformation of the frame beam column causes the gusset to form a closure effect, producing an additional internal force, see fig. 2 (a). When the earthquake acts from right to left, the node plate forms an opening effect and generates additional internal force. Under the action of horizontal earthquake, the support nodes are opened and closed due to the lateral displacement of the frame beams and columns, and the opening and closing effect is called as the effect of generating additional internal force.
The effect of opening and shutting can make the node produce great effort under the effect of small deformation, produces deformation, causes adverse effect to the stability of node atress and gusset plate.
In order to solve the technical problem, the prior documents disclose some technical solutions, but the technical solutions all emphasize improvement of a certain function on one side, do not integrate and consider the connection of the damper and the reinforced concrete frame node, and do not design the support type damping connection node in a targeted manner.
For example, in some patent documents, the slip joint connection only considers that the joint plate and the frame beam column are separated by using a flexible material to achieve the purpose of reducing the opening and closing effect, but does not consider the influence of the structural design on the stress state of the frame joint, and the force transmission mechanism is not clear. For another example, in the unconstrained node connection method proposed by Berman, the node plate is only connected with the frame beam and is not connected with the frame column any more, so that the damping support shaft force is borne by the beam completely, the shear yield deformation of the beam end is easily caused, the effect of weakening the bearing capacity of the frame node is caused, and the self earthquake resistance of the building is not favorably exerted.
In addition, each type of node design rarely has a self-repairing function, and most of the materials used by the nodes are commonly used steel materials and concrete materials. The reinforced concrete material has the defect of poor plasticity, so that great difficulty is brought to the repair work of the node after the earthquake.
Disclosure of Invention
The invention provides a supporting type damping connecting device for a middle node of a frame and a pin frame, which are suitable for node connection and pin frame construction when a supporting type damper is arranged in the middle of a newly-built RC frame, and can enhance the node bearing capacity and the self-recovery capacity after an earthquake from two aspects of improving the opening and closing effect to ensure the efficient utilization of the damper and arranging a novel node structure.
In order to achieve the purpose, the technical scheme of the invention is as follows:
the utility model provides a support type damping connecting device of frame middle part node, includes the node body that constitutes by frame post and frame roof beam are crossing, this internal cross node steel skeleton that is equipped with of node, 4 free ends of node steel skeleton extend respectively about going into about the frame post that corresponds and the frame roof beam in to move outward the expected plasticity hinge area of node body to the place region of free end outside frame post and frame roof beam, the medial extremity in expected plasticity hinge area be equipped with pre-buried steel sheet, be connected with the prestressing steel bar that has self-resuming ability between adjacent pre-buried steel sheet between frame post and frame roof beam, the node steel skeleton still be connected with damping node plate, damping node plate be connected with support type attenuator.
Preferably, the frame column and the frame beam are both of reinforced concrete structures, and the free end of the joint steel skeleton extends into the reinforcement cages of the frame column and the frame beam and is welded with the reinforcement cages.
Preferably, the joint steel skeleton is composed of I-shaped steel, the joint steel skeleton is perpendicular to each other, the end faces of the adjacent I-shaped steel wing plates form a joint plate connecting area, and the end part of the damping joint plate is welded with the joint plate connecting area.
Preferably, the polyvinyl alcohol fibre reinforced cement based composite is filled in the node body inside the 4 intended plastic hinge zones and including within the intended plastic hinge zones themselves.
Preferably, the polyvinyl alcohol fiber reinforced cement-based composite material is also embedded with shape memory alloy.
Preferably, the inner side end of the embedded steel plate is fixedly connected with an embedded part, the embedded part is embedded in the concrete at the corresponding position, the end part of the prestressed steel bar is integrally formed with a connecting plate, and the connecting plate is welded with the outer surface of the embedded steel plate.
Preferably, the ends of the damping gusset plate penetrate through the reinforcement cages of the frame beams and the frame columns at corresponding positions, are welded with the gusset plate connecting area, and form a whole with the gusset body through pouring concrete.
Preferably, the damping gusset plate has 2 link ends, and 2 link ends pass through the steel reinforcement cage of the frame roof beam and the frame post of corresponding position respectively to with gusset plate joining region be close to the one side welding of node steel skeleton free end.
A pin frame is characterized in that supporting type damping connecting devices are respectively arranged at nodes of the pin frame, and damping node plates of 2 supporting type damping connecting devices opposite to each other at opposite angles are connected through supporting type dampers.
The support type damping connecting device for the middle node of the frame and the pin frame have the advantages that:
(1) A node steel framework made of I-shaped steel is placed at the node of the frame beam column, so that the bearing capacity of the node is improved, the plastic hinge deviates from the central area of the node body, and the safety of the node is guaranteed.
(2) According to the invention, through the prestressed steel bar with the self-resetting function, the influence of the opening and closing effect on the stress of the node body can be relieved, and the self-repairing function is realized after the earthquake.
(3) The damping joint plate is rigidly connected with the joint steel framework, the bearing capacity of the damping joint plate and the stability of the joint body are improved by utilizing the stability of the joint steel framework, and the bearing capacity of the joint is improved by improving the stress condition of the joint.
(4) The polyvinyl alcohol fiber reinforced cement-based composite material and the shape memory alloy are used in the node body, so that the self-repairing and self-healing function of the cracks at the nodes is guaranteed.
(5) The invention can obviously enhance the structural strength and the stability of the truss frame by arranging the supporting type damping connecting device at the node of the truss frame and connecting the damping node plates at the opposite corners through the supporting type damper.
Drawings
FIG. 1 is a schematic view of the overall structure of the present invention;
FIG. 2 is a schematic block diagram of the present invention in comparison with the prior art (a is the prior art, b is the present invention);
FIG. 3 is a partial structure diagram of the embedded steel plate of the invention;
FIG. 4 is a schematic view of the distribution of the plastic hinge area and gusset connection area contemplated by the present invention;
FIG. 5 is a schematic view of a region filled with a polyvinyl alcohol fiber reinforced cement-based composite material according to the present invention;
FIG. 6 is a schematic view of a truss frame according to the present invention;
FIG. 7 is a schematic view of an embodiment of the present invention provided with a shape memory alloy;
1-frame columns; 2-a frame beam; 3-node steel skeleton; 4-damping gusset plate; 5-prestressed steel bars; 6-a reinforcement cage; 7-pre-burying a steel plate; 8-gusset plate welding part; 9-embedded parts; 10-connecting plate welding position; 11-prospective plastic hinge region; 12-gusset connection region; 13-polyvinyl alcohol fiber reinforced cement-based composite material; 14-a support-type damper; 15-shape memory alloy.
Detailed Description
In the following, embodiments of the present invention are described in detail in a stepwise manner, which is merely a preferred embodiment of the present invention and is not intended to limit the scope of the present invention, and any modifications, equivalents, improvements, etc. made within the spirit and principle of the present invention should be included in the scope of the present invention.
In the description of the present invention, it should be noted that the terms "upper", "lower", "left", "right", "top", "bottom", "inner", "outer", and the like indicate orientations and positional relationships based on the orientations and positional relationships shown in the drawings, and are only used for describing the present invention and simplifying the description, but do not indicate or imply that the referred device or element must have a specific orientation and a specific orientation configuration and operation, and thus, the present invention is not to be construed as being limited thereto.
In the initial embodiment, a support type damping connection device for a middle node of a frame, as shown in fig. 1, 3 and 4, includes a node body formed by intersecting a frame column 1 and a frame beam 2, a cross-shaped node steel frame 3 is arranged in the node body, 4 free ends of the node steel frame 3 extend into the frame column 1 and the frame beam 2 corresponding to each other up, down, left and right respectively, and an expected plastic hinge region 11 of the node body is moved out to the region where the frame column 1 and the frame beam 2 are located outside the free ends, an embedded steel plate 7 is arranged at the inner side end of the expected plastic hinge region 11, a prestressed steel bar 5 with self-recovery capability is connected between the adjacent embedded steel plates 7 between the frame column 1 and the frame beam 2, the node steel frame 3 is further connected with a damping node plate 4, and the damping node plate 4 is connected with a support type damper 14.
In this embodiment, as shown in fig. 4, the expected plastic hinge region 11 of the node body is moved from the central region of the node to the regions where the frame column 1 and the frame beam 2 are located outside the free end through the node steel frame 3, so as to effectively improve the stress condition of the node and enhance the bearing capacity of the node. Compared with reinforced concrete materials, the joint steel skeleton has higher strength and rigidity, so that the bearing capacity of the joint is improved.
On this basis, the damping gusset 4 is connected to the gusset steel framework 3, so that the fixing position of the damping gusset (i.e., the gusset connection region 12) is separated from the desired plastic hinge region 11. In the traditional node design, the plastic hinge area and the node plate connecting area are positioned in the same section, so that the area has double functions and is not beneficial to the safety of the node. The invention separates the expected plastic hinge area 11 from the joint plate connecting area 12, realizes the function area decentralization, is beneficial to improving the stress condition of the joint and ensures the safety of the joint.
As shown in fig. 2, the damping support node mentioned in the background art has an opening and closing effect, which may cause the stress condition of the node to be complex and is not favorable for the exertion of the bearing capacity of the frame system. According to the invention, four prestressed steel bars 5 are respectively arranged around the connection of the frame beam column, as shown in fig. 2 (b), the prestressed steel bars 5 improve the opening and closing effect by limiting the deformation of the frame beam column, the development range of the opening and closing effect is deviated from the center of the node to the connection position of the steel bars and the frame beam column, and the adverse effects of the opening and closing effect on the node and the supporting damping node plate are greatly limited. When an earthquake comes, the prestressed steel bar 5 is firstly under the action of the tension and compression axial force, so that the steel bar is axially deformed, the node is protected, and the supporting damping is realized. After the earthquake, the prestressed steel bar 5 has a self-recovery function, so that the prestressed steel bar is recovered to a pre-earthquake state, and the frame structure is recovered.
In a further embodiment, as shown in fig. 1, the frame column 1 and the frame beam 2 are both reinforced concrete structures, and the free end of the joint steel skeleton 3 extends into the reinforcement cage of the frame column 1 and the frame beam 2 and is welded with the reinforcement cage.
In a further embodiment, as shown in fig. 1 and 4, the joint steel skeleton 3 is made of i-steel, the mutually perpendicular and adjacent i-steel wing plate end faces of the joint steel skeleton 3 form a joint plate connection area 12, and the end of the damping joint plate 4 is welded to the joint plate connection area 12.
In a further embodiment, shown in figures 1, 4, 5, the polyvinyl alcohol fibre reinforced cement based composite material 13 is filled in the node body inside the 4 intended plastic hinge zones 11 and including the intended plastic hinge zones 11 themselves.
In this embodiment, when cracks are generated in the nodes, due to the bridging effect provided by the fibers of the polyvinyl alcohol fiber reinforced cement-based composite material 13, the opening of each crack is effectively controlled and suppressed, and the randomly distributed fibers can reduce the width of the crack in the concrete, thereby providing sufficient support for the self-healing process of the cement-based material. The novel composite material placing area comprises a position where a node is likely to generate plastic deformation and crack, namely, the novel composite material placing area comprises an expected plastic hinge area 11, so that the plastic hinge area and other areas which are easy to generate cracks after earthquake can have self-repairing capacity, and great convenience is brought to the repairing work of the buildings after the earthquake.
In a further embodiment, as shown in fig. 1, 4 and 5, the polyvinyl alcohol fiber reinforced cement-based composite material 13 is embedded with a shape memory alloy 15.
In this embodiment, the self-repairing ability of the concrete in the region where cracks are likely to occur is further improved by combining the polyvinyl alcohol fiber reinforced cement-based composite material 13 with the shape memory alloy 15. The shape memory alloy subjected to pre-stretching treatment is pre-embedded into a matrix of the polyvinyl alcohol fiber reinforced cement-based composite material 13, when cracks appear on nodes or the width of the cracks reaches a critical point and cannot be completely repaired through the self-repairing capability of the matrix, the shape memory alloy near the cracks can be subjected to heating treatment, so that the shrinkage deformation of the shape memory alloy can achieve the purpose of closing the cracks or limiting the width of the cracks.
In a further embodiment, as shown in fig. 1 and 3, an embedded part 9 is further fixedly connected to an inner side end of the embedded steel plate 7, the embedded part 9 is embedded in concrete at a corresponding position, a connecting plate is integrally formed at an end of the prestressed steel bar 5, and the connecting plate is welded to an outer surface of the embedded steel plate 7.
In a further embodiment, as shown in fig. 1, the ends of the damping gusset 4 pass through the reinforcement cages of the corresponding frame beams and frame columns, are welded to the gusset connection areas, and are integrated with the gusset body by casting concrete. Compared with the connection mode mentioned in the background technology part, the damping gusset plate 4 can be connected with the gusset body into a whole, so that the structural strength of the gusset body is ensured while the full damping and energy dissipation effects are achieved.
In a further embodiment, as shown in fig. 1 and 6, the damping gusset plate 4 has 2 connecting ends, the 2 connecting ends respectively penetrate through the steel reinforcement cages of the frame beam and the frame column at corresponding positions and are welded with one side of the gusset plate connecting area close to the free end of the gusset steel frame 3, the connecting position can disperse the acting force on the central point of the gusset body while improving the stability of the supporting damper 14, and the stability of the gusset body is improved.
In a further embodiment, as shown in fig. 6, a truss frame is provided with support type damping connection devices at the nodes thereof, and damping node plates of 2 diagonally opposite support type damping connection devices are connected by support type dampers 14.
In this embodiment, the structural strength and stability of the truss frame can be significantly enhanced by providing the supporting type damping connection device at the node of the truss frame and connecting the damping node plates at the opposite corners through the supporting type dampers 14.
Claims (6)
1. A support-type damping connection for a frame mid-section node, characterized by: the node comprises a node body formed by intersecting a frame column and a frame beam, wherein a cross-shaped node steel skeleton is arranged in the node body, 4 free ends of the node steel skeleton extend into the frame column and the frame beam which correspond up and down, left and right respectively, an expected plastic hinge area of the node body is moved outwards to the area where the frame column and the frame beam are located outside the free ends, an embedded steel plate is arranged at the inner side end of the expected plastic hinge area, a prestressed steel bar with self-recovery capability is connected between the adjacent embedded steel plates between the frame column and the frame beam, the node steel skeleton is further connected with a damping node plate, and the damping node plate is connected with a supporting type damper;
the joint steel skeleton is composed of I-shaped steel, the joint steel skeleton is perpendicular to each other, the end faces of the adjacent I-shaped steel wing plates form a joint plate connecting area, and the end part of the damping joint plate is welded with the joint plate connecting area;
the end part of the damping gusset plate penetrates through the reinforcement cages of the frame beam and the frame column at corresponding positions, is welded with a gusset plate connecting area, and forms a whole with the gusset body by pouring concrete;
the damping gusset plate is provided with 2 connecting ends, and the 2 connecting ends respectively penetrate through the frame beams and the steel reinforcement cages of the frame columns at corresponding positions and are welded with one side of the gusset plate connecting area, which is close to the free end of the gusset steel framework;
the method for improving the stress condition of the node comprises the following steps:
moving an expected plastic hinge area of the node body from the central area of the node to the areas where the frame columns and the frame beams on the outer side of the free end are located through the node steel framework; connecting the damping node plate with the node steel framework so as to separate the fixed position of the damping node plate, namely the node plate connecting area from the expected plastic hinge area, and realize the function area decentralization; the prestressed steel bars improve the opening and closing effect by limiting the deformation of the frame beam column, and the development range of the opening and closing effect is deviated from the center of the node to the joint of the steel bars and the frame beam column, so that the adverse effects of the opening and closing effect on the node and the supporting damping node plate are limited.
2. A supporting-type damping connecting device for a middle node of a frame as claimed in claim 1, wherein: the free end of the node steel skeleton extends into the reinforcement cages of the frame column and the frame beam and is welded with the reinforcement cages.
3. A supporting-type damping connecting device for a middle node of a frame as claimed in claim 2, wherein: the joint body inside the 4 intended plastic hinge regions and including the intended plastic hinge regions themselves are filled with polyvinyl alcohol fiber reinforced cement based composite material.
4. A supporting-type damping connecting device for a middle node of a frame as claimed in claim 3, wherein: the polyvinyl alcohol fiber reinforced cement-based composite material is also embedded with shape memory alloy.
5. A supporting-type damping connecting device for a middle node of a frame as claimed in claim 4, wherein: the inner side end of the embedded steel plate is fixedly connected with an embedded part, the embedded part is embedded in concrete at a corresponding position, a connecting plate is integrally formed at the end part of the prestressed steel bar, and the connecting plate is welded with the outer surface of the embedded steel plate.
6. A pin frame is characterized in that: the supporting type damping connecting devices as claimed in claim 5 are respectively arranged at the nodes of the truss frames, and the damping node plates of the 2 diagonally opposite supporting type damping connecting devices are connected through supporting type dampers.
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| CN202111107344.9A CN113737978B (en) | 2021-09-22 | 2021-09-22 | Support type damping connecting device and pin frame of frame middle part node |
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| CN202111107344.9A CN113737978B (en) | 2021-09-22 | 2021-09-22 | Support type damping connecting device and pin frame of frame middle part node |
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| CN113737978B true CN113737978B (en) | 2022-10-18 |
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| CN105064502B (en) * | 2015-08-10 | 2017-06-20 | 河海大学 | Using the regeneration concrete bean column node and construction method of cross-shaped profile steel plate weld edge of a wing stiffener |
| CN205776864U (en) * | 2016-07-13 | 2016-12-07 | 大连理工大学 | Precast construction node energy-dissipating and shock-absorbing arc antivibrator |
| CN106894667A (en) * | 2017-04-20 | 2017-06-27 | 合肥建工集团有限公司 | Energy-dissipation shock-absorbing damp component and its construction method |
| CN207484676U (en) * | 2017-11-16 | 2018-06-12 | 四川华泰众城工程设计有限公司 | A kind of buckling restrained brace reinforced concrete frame dry type flexible beam-column connection |
| CN108385835A (en) * | 2018-03-14 | 2018-08-10 | 青岛理工大学 | Shaped steel runs through the novel beam-to-column joint structure of cast-type concrete frame |
| CN208685815U (en) * | 2018-05-14 | 2019-04-02 | 南京东鼎建筑科技有限公司 | A kind of support prestressing force connecting node of concrete support frame structure |
| CN112096115A (en) * | 2020-10-10 | 2020-12-18 | 福州大学 | Reinforcing structure for improving earthquake-proof performance of earthquake-damaged RC frame structure and construction method |
| CN112196098A (en) * | 2020-10-22 | 2021-01-08 | 南京林业大学 | Dry-type connection assembly type reinforced concrete frame structure with BRB obliquely and X-shaped arrangement |
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