An assembled self-resetting beam-column connection node

Abstract

The utility model discloses an assembly type self-resetting beam column connecting joint, it includes first steel beam, second steel beam, first steel beam left end part is connected with steel column, and first steel beam right end part sets up first beam side end plate, and first beam side end plate sets up first lug plate, and the first lug plate is connected with the second lug plate through the pin shaft pivot, and the first beam side end plate is equipped with a plurality of nickel titanium alloy bolt rods between second beam side end plate, and the left and right end of nickel titanium alloy bolt rod respectively passes corresponding side first through -hole, second through -hole, and the left and right end of nickel titanium alloy bolt rod is fastened in corresponding side's first beam side end plate, two beam side end plate through nut respectively, and part nickel titanium alloy bolt rod is located on the pin axle upper end side, and part nickel titanium alloy bolt rod is located on the pin axle lower end side, through above -mentioned structural design, the utility model has novel, energy -dissipating effect is good and the advantage that construction is convenient.

Description

Technical Field

[0001] This utility model relates to the field of building structure technology, and in particular to a prefabricated self-resetting beam-column connection node. Background Technology

[0002] Chinese invention patent application number 202410390278.8, entitled "A Prefabricated Tough PEC Recycled Concrete Beam-Column Joint for a Compression-Type Composite Floor Slab," substantially discloses a self-resetting beam-column connection structure. Specifically, the prefabricated tough PEC recycled concrete beam-column joint for the compression-type composite floor slab discloses the following technical solution: a prefabricated tough PEC recycled concrete beam-column joint for a compression-type composite floor slab, comprising a PEC column and an H-beam, wherein the H-beam is broken into... The structure consists of two parts: a short beam welded to the right side of the PEC column steel and a long beam located away from the right side of the PEC column steel. A rectangular end plate is installed on the right side of the short beam, and a rectangular end plate is installed on the left side of the long beam. The rectangular end plates of the short beam and the long beam are fitted with semi-circular joints. Holes are arranged in the middle of both the semi-circular and semi-circular joints, and the two are connected by bolts after being spliced ​​together. Each rectangular end plate has four holes in the middle for placing shape memory alloy cables, which are then connected using clamps.

[0003] For the prefabricated tough PEC recycled concrete beam-column joints of the above-mentioned pressure-type composite floor slab, shape memory alloy cables have advantages such as super elasticity, shape memory, high damping, fatigue resistance and corrosion resistance. Under seismic action, shape memory alloy cables undergo elastoplastic tensile deformation to dissipate energy, and after the seismic action dissipates, they have a certain self-resetting ability through heating or electrical excitation, which can reduce the residual displacement, damage and injury of the main structure.

[0004] However, the prefabricated tough PEC recycled concrete beam-column joints of the aforementioned profiled composite floor slab still have the following defects, specifically:

[0005] Defect 1: The short beam rectangular end plate and the long beam rectangular end plate are connected by four shape memory alloy cables, and the two ends of each shape memory alloy cable are anchored by clamps. During the installation of the shape memory alloy cables on the short beam rectangular end plate and the long beam rectangular end plate, the shape memory alloy cables need to be stretched, which is inconvenient and has low construction efficiency.

[0006] Defect 2: In the process of achieving energy dissipation and vibration reduction, the rectangular end plates of the short beam and the long beam deflect around the bolt between the semi-circular joints of the short beam and the long beam as the rotation center. The shape memory alloy cable can only dissipate energy through elastic-plastic tensile deformation, but cannot dissipate energy through elastic-plastic compressive deformation, resulting in poor energy dissipation effect. Utility Model Content

[0007] The purpose of this utility model is to provide a prefabricated self-resetting beam-column connection node to address the shortcomings of existing technologies. This prefabricated self-resetting beam-column connection node has a novel design, good energy dissipation effect, and is easy to construct.

[0008] To achieve the above objectives, this utility model is implemented through the following technical solution.

[0009] A prefabricated self-resetting beam-column connection node includes a vertically arranged steel column and a first steel beam and a second steel beam arranged horizontally, respectively. The first steel beam is located between the steel column and the second steel beam, and the left end of the first steel beam is connected to the steel column.

[0010] The right end of the first steel beam is provided with a first beam side end plate, and the first beam side end plate is provided with a first ear plate extending toward the second steel beam; the left end of the second steel beam is provided with a second beam side end plate, and the second beam side end plate is provided with a second ear plate extending toward the first steel beam, and the first ear plate and the second ear plate are pivotally connected by a pin.

[0011] The first beam side end plate has several first through holes that are completely through the left and right sides on the periphery of the first ear plate, and the second beam side end plate has several second through holes that are completely through the left and right sides on the periphery of the second ear plate. The first through holes of the first beam side end plate and the second through holes of the second beam side end plate are aligned.

[0012] Several nickel-titanium alloy bolts are installed between the side end plate of the first beam and the side end plate of the second beam. The left and right ends of the nickel-titanium alloy bolts are respectively provided with external threads. The left end of each nickel-titanium alloy bolt passes through the corresponding first through hole, and the right end of each nickel-titanium alloy bolt passes through the corresponding second through hole. The left and right ends of the nickel-titanium alloy bolts are respectively fastened to the corresponding side end plate of the first beam and the side end plate of the second beam by nuts.

[0013] Some nickel-titanium alloy bolts are located on the upper end of the pin, while others are located on the lower end.

[0014] Among them, eight nickel-titanium alloy bolts are installed between the first beam side end plate and the second beam side end plate, with four nickel-titanium alloy bolts located on the upper end side of the pin and four nickel-titanium alloy bolts located on the lower end side of the pin.

[0015] The left and right ends of the nickel-titanium alloy bolt rod are each screwed with two nuts.

[0016] Two nuts are located at the left end of the nickel-titanium alloy bolt rod, one of which is located on the left side of the first beam side end plate and the other is located on the right side of the first beam side end plate.

[0017] Two nuts are located at the right end of the nickel-titanium alloy bolt rod, one of which is located on the left end of the second beam side plate and the other is located on the right end of the second beam side plate.

[0018] The surface of the nickel-titanium alloy bolt rod is provided with a corrosion-resistant coating.

[0019] The left end of the first steel beam is provided with a column side end plate, which is bolted to the steel column by a number of high-strength bolts.

[0020] The steel column is a square steel tube concrete column, which includes a square steel tube column and the inside of the square steel tube column is filled with concrete.

[0021] The first steel beam and the second steel beam are both square steel tube beams. The side end plate of the first beam is welded to the right end of the first steel beam, and the side end plate of the second beam is welded to the left end of the second steel beam.

[0022] The first ear plate is welded to the side end plate of the first beam, and the second ear plate is welded to the side end plate of the second beam.

[0023] Compared with the prior art, the present invention has the following beneficial effects, specifically:

[0024] 1. The nickel-titanium alloy bolt rod is a rigid structural component, and the left and right ends of the nickel-titanium alloy bolt rod are respectively screwed and fastened to the side end plates of the first beam and the side end plates of the second beam on the corresponding sides by nuts; compared with the existing shape memory alloy cable end clamp anchoring installation method, since there is no need to perform stretching treatment during installation, the construction of this utility model is more convenient.

[0025] 2. Under seismic action and when the first and second steel beams deflect around the pivot pin, some of the nickel-titanium alloy bolt rods dissipate energy through elasto-plastic tensile deformation, and some of the nickel-titanium alloy bolt rods dissipate energy through elasto-plastic compressive deformation. Therefore, this invention can simultaneously achieve energy dissipation through elasto-plastic tensile deformation and elasto-plastic compressive deformation. Compared with the prior art, which can only achieve energy dissipation through elasto-plastic tensile deformation, this invention has a better energy dissipation effect.

[0026] 3. Therefore, the prefabricated self-resetting beam-column connection node of this utility model has the advantages of novel structural design, good energy dissipation effect and convenient construction. Attached Figure Description

[0027] The present invention will be further described below with reference to the accompanying drawings, but the embodiments in the drawings do not constitute any limitation on the present invention.

[0028] Figure 1 This is a schematic diagram of the structure of this utility model.

[0029] Figure 2 This is a structural schematic diagram from another perspective of the present invention.

[0030] Figure 3 This is a partially enlarged schematic diagram of the present invention.

[0031] exist Figures 1 to 3 This includes:

[0032] 1-Steel column; 2-First steel beam; 21-First beam side end plate; 22-First ear plate; 23-Column side end plate; 3-Second steel beam; 31-Second beam side end plate; 32-Second ear plate; 4-Pin; 5-Nickel-titanium alloy bolt rod; 6-Nut; 7-High-strength bolt. Detailed Implementation

[0033] The present invention will now be described in conjunction with specific embodiments.

[0034] Example 1, as Figures 1 to 3 As shown, a prefabricated self-resetting beam-column connection node includes a vertically arranged steel column 1 and a first steel beam 2 and a second steel beam 3 arranged horizontally. The first steel beam 2 is located between the steel column 1 and the second steel beam 3, and the left end of the first steel beam 2 is connected to the steel column 1.

[0035] Among them, such as Figures 1 to 3 As shown, the right end of the first steel beam 2 is provided with a first beam side end plate 21, and the first beam side end plate 21 is provided with a first ear plate 22 extending toward the second steel beam 3; the left end of the second steel beam 3 is provided with a second beam side end plate 31, and the second beam side end plate 31 is provided with a second ear plate 32 extending toward the first steel beam 2, and the first ear plate 22 and the second ear plate 32 are pivotally connected by a pin 4.

[0036] Furthermore, such as Figures 1 to 3 As shown, the first beam side end plate 21 has several first through holes (not shown in the figure) that are completely through the left and right sides of the first ear plate 22, and the second beam side end plate 31 has several second through holes (not shown in the figure) that are completely through the left and right sides of the second ear plate 32, and the first through holes of the first beam side end plate 21 and the second through holes of the second beam side end plate 31 are aligned.

[0037] Furthermore, such as Figures 1 to 3 As shown, a number of nickel-titanium alloy bolts 5 are installed between the first beam side end plate 21 and the second beam side end plate 31. The left and right ends of the nickel-titanium alloy bolts 5 are respectively provided with external threads (not shown in the figure). The left end of each nickel-titanium alloy bolt 5 passes through the corresponding first through hole, and the right end of each nickel-titanium alloy bolt 5 passes through the corresponding second through hole. The left and right ends of the nickel-titanium alloy bolts 5 are respectively fastened to the first beam side end plate 21 and the second beam side end plate 31 on the corresponding side by nuts 6.

[0038] It should be noted that, as Figures 1 to 3 As shown, some of the nickel-titanium alloy bolt rods 5 are located on the upper end side of the pin 4, and some of the nickel-titanium alloy bolt rods 5 are located on the lower end side of the pin 4.

[0039] Specifically, such as Figures 1 to 3 As shown, eight nickel-titanium alloy bolts 5 are installed between the first beam side end plate 21 and the second beam side end plate 31. Four nickel-titanium alloy bolts 5 are located on the upper end side of the pin 4, and four nickel-titanium alloy bolts 5 are located on the lower end side of the pin 4. Of course, the number of nickel-titanium alloy bolts 5 mentioned above does not constitute a limitation on this embodiment, that is, the assembled self-resetting beam-column connection node of this embodiment can also be provided with other numbers of nickel-titanium alloy bolts 5.

[0040] It should be noted that the nut 6 in this embodiment is a lock nut 6, in order to improve the stability of the screw-on installation of each nickel-titanium alloy bolt rod 5.

[0041] It should be emphasized that the nickel-titanium alloy bolt rod 5 in this embodiment is a rigid structural component. When the nickel-titanium alloy bolt rod 5 is installed between the first beam side end plate 21 and the second beam side end plate 31, the left and right ends of the nickel-titanium alloy bolt rod 5 are respectively screwed and fastened to the corresponding first beam side end plate 21 and second beam side end plate 31 by nuts 6. Compared with the existing shape memory alloy cable end clamp anchoring installation method, since there is no need to perform stretching treatment during installation, the construction of the prefabricated self-resetting beam-column connection node in this embodiment is more convenient.

[0042] It should be further emphasized that, for the nickel-titanium alloy bolts 5 installed between the side end plate 21 of the first beam and the side end plate 31 of the second beam in this embodiment, under seismic action and when the first steel beam 2 and the second steel beam 3 deflect around the pin 4 as the center of rotation, some of the nickel-titanium alloy bolts 5 dissipate energy through elastic-plastic tensile deformation, and some of the nickel-titanium alloy bolts 5 dissipate energy through elastic-plastic compressive deformation. Specifically, when the second steel beam 3 deflects downward relative to the first steel beam 2, the nickel-titanium alloy bolts 5 located on the upper end side of the pin 4 dissipate energy through elastic-plastic tensile deformation, and the nickel-titanium alloy bolts 5 located on the lower end side of the pin 4 dissipate energy through elastic-plastic compressive deformation. When the second steel beam 3 deflects downward relative to the first steel beam 2, the nickel-titanium alloy bolts 5 located on the upper end side of the pin 4 dissipate energy through elastic-plastic compressive deformation, and the nickel-titanium alloy bolts 5 located on the lower end side of the pin 4 dissipate energy through elastic-plastic tensile deformation. The prefabricated self-resetting beam-column connection node of this embodiment can simultaneously achieve energy dissipation through elastic-plastic tensile deformation and energy dissipation through elastic-plastic compressive deformation. Compared with the existing technology, which can only achieve energy dissipation through elastic-plastic tensile deformation, the prefabricated self-resetting beam-column connection node of this embodiment has a better energy dissipation effect.

[0043] It should be noted that after unloading, the nickel-titanium alloy bolt rod 5 in this embodiment can restore its original shape based on its superelastic properties, thereby driving the first steel beam 2 and the second steel beam 3 to reset.

[0044] Furthermore, the prefabricated self-resetting beam-column connection node in this embodiment adopts a replaceable design. Since the earthquake damage is concentrated at the nickel-titanium alloy bolt rod group, the replacement after the earthquake only requires disassembling the nuts 6 of each nickel-titanium alloy bolt rod 5 and replacing them with new nickel-titanium alloy bolt rods 5. The replacement is convenient and the maintenance cost is low.

[0045] In summary, the prefabricated self-resetting beam-column connection node of this embodiment has the advantages of novel structural design, good energy dissipation effect and convenient construction through the above structural design.

[0046] Example 2, as Figures 1 to 3 As shown, the difference between this embodiment 2 and embodiment 1 is that two nuts 6 are screwed onto the left and right ends of the nickel-titanium alloy bolt rod 5, respectively.

[0047] Among them, the two nuts 6 at the left end of the nickel-titanium alloy bolt rod 5, one of which is located on the left end side of the first beam side end plate 21, and the other is located on the right end side of the first beam side end plate 21.

[0048] In addition, there are two nuts 6 at the right end of the nickel-titanium alloy bolt rod 5, one of which is located on the left end of the second beam side end plate 31, and the other is located on the right end of the second beam side end plate 31.

[0049] In this second embodiment, the two ends of the nickel-titanium alloy bolt rod 5 are respectively fixed by two nuts 6. This structural design can ensure that the nickel-titanium alloy bolt rod 5 will not be axially displaced relative to the side end plate 21 of the first beam and the side end plate 31 of the second beam, so as to ensure that the nickel-titanium alloy bolt rod 5 can reliably dissipate energy through elastic-plastic tensile deformation or elastic-plastic compressive deformation.

[0050] Example 3 differs from Example 1 in that the surface of the nickel-titanium alloy bolt rod 5 is provided with a corrosion-resistant coating.

[0051] By applying a corrosion-resistant coating to the surface of the nickel-titanium alloy bolt rod 5, the corrosion resistance of the nickel-titanium alloy bolt rod 5 can be effectively improved, thereby increasing its service life.

[0052] Example 4, as Figure 1 and Figure 2 As shown, the difference between this embodiment four and embodiment one is that: the left end of the first steel beam 2 is provided with a column side end plate 23, and the column side end plate 23 is screwed to the steel column 1 by a number of high-strength bolts 7.

[0053] Example 5 differs from Example 1 in that: the steel column 1 is a square steel tube concrete column, which includes a square steel tube column, and the inside of the square steel tube column is filled with concrete.

[0054] Example 6 differs from Example 1 in that: the first steel beam 2 and the second steel beam 3 are square steel tube beams, the side end plate 21 of the first beam is welded to the right end of the first steel beam 2, and the side end plate 31 of the second beam is welded to the left end of the second steel beam 3.

[0055] Furthermore, the first ear plate 22 is welded to the side end plate 21 of the first beam, and the second ear plate 32 is welded to the side end plate 31 of the second beam.

[0056] The above description is only a preferred embodiment of this utility model. For those skilled in the art, there will be changes in the specific implementation method and application scope based on the idea of ​​this utility model. The content of this specification should not be construed as a limitation of this utility model.

Claims

1. A prefabricated self-resetting beam-column connection node, comprising a vertically arranged steel column (1) and a first steel beam (2) and a second steel beam (3) arranged horizontally, wherein the first steel beam (2) is located between the steel column (1) and the second steel beam (3), and the left end of the first steel beam (2) is connected to the steel column (1); The right end of the first steel beam (2) is provided with a first beam side end plate (21), and the first beam side end plate (21) is provided with a first ear plate (22) extending toward the second steel beam (3); the left end of the second steel beam (3) is provided with a second beam side end plate (31), and the second beam side end plate (31) is provided with a second ear plate (32) extending toward the first steel beam (2), and the first ear plate (22) and the second ear plate (32) are pivotally connected by a pin (4); The first beam side end plate (21) has several first through holes that are completely through the left and right sides on the periphery of the first ear plate (22), and the second beam side end plate (31) has several second through holes that are completely through the left and right sides on the periphery of the second ear plate (32). The first through holes of the first beam side end plate (21) and the second through holes of the second beam side end plate (31) are aligned. Its features are: Several nickel-titanium alloy bolts (5) are installed between the first beam side end plate (21) and the second beam side end plate (31). The left and right ends of the nickel-titanium alloy bolts (5) are respectively provided with external threads. The left end of each nickel-titanium alloy bolt (5) passes through the corresponding first through hole, and the right end of each nickel-titanium alloy bolt (5) passes through the corresponding second through hole. The left and right ends of the nickel-titanium alloy bolts (5) are respectively fastened to the first beam side end plate (21) and the second beam side end plate (31) on the corresponding side by nuts (6). Some of the nickel-titanium alloy bolt rods (5) are located on the upper end side of the pin (4), and some of the nickel-titanium alloy bolt rods (5) are located on the lower end side of the pin (4).

2. The prefabricated self-resetting beam-column connection node according to claim 1, characterized in that: Eight nickel-titanium alloy bolts (5) are installed between the first beam side end plate (21) and the second beam side end plate (31). Four nickel-titanium alloy bolts (5) are located on the upper end side of the pin (4), and four nickel-titanium alloy bolts (5) are located on the lower end side of the pin (4).

3. The prefabricated self-resetting beam-column connection node according to claim 1, characterized in that: Two nuts (6) are screwed onto the left and right ends of the nickel-titanium alloy bolt rod (5). Two nuts (6) at the left end of the nickel-titanium alloy bolt rod (5), one of which is located on the left end of the first beam side plate (21), and the other is located on the right end of the first beam side plate (21); Two nuts (6) at the right end of the nickel-titanium alloy bolt rod (5), one of which is located on the left end of the second beam side end plate (31), and the other is located on the right end of the second beam side end plate (31).

4. The prefabricated self-resetting beam-column connection node according to claim 1, characterized in that: The surface of the nickel-titanium alloy bolt rod (5) is provided with a corrosion-resistant coating.

5. The prefabricated self-resetting beam-column connection node according to claim 1, characterized in that: The left end of the first steel beam (2) is provided with a column side end plate (23), which is screwed to the steel column (1) by a number of high-strength bolts (7).

6. The prefabricated self-resetting beam-column connection node according to claim 1, characterized in that: The steel column (1) is a square steel tube concrete column, which includes a square steel tube column and the inside of the square steel tube column is filled with concrete.

7. The prefabricated self-resetting beam-column connection node according to claim 1, characterized in that: The first steel beam (2) and the second steel beam (3) are square steel pipe beams. The side end plate (21) of the first beam is welded to the right end of the first steel beam (2), and the side end plate (31) of the second beam is welded to the left end of the second steel beam (3).

8. A prefabricated self-resetting beam-column connection node according to claim 7, characterized in that: The first ear plate (22) is welded to the side end plate (21) of the first beam, and the second ear plate (32) is welded to the side end plate (31) of the second beam.

Images