REPLACEABLE BEAM-COLUMN CONNECTION BRACKET WITH TWISTING PLATE.

Abstract

The invention relates to a replaceable beam-column connection apparatus with buckling plates, developed for use in structural engineering, particularly in buildings.

Description

1 TARIFF REPLACEABLE BEAM-COLUMN JOINT APPARATUS WITH TWISTING PLATE. Technical Area The invention was developed for use in the field of structural engineering, particularly in buildings. This relates to replaceable beam-column connection devices with buckling plates. State of the Art In the technical field, there are different types of systems where load-bearing elements are joined together in a way that prevents damage. Connection details are available. In these studies, the expected damage is in the connection element. It is formed and this connecting element is replaceable after damage. However, most of these previously developed techniques cause damage to the supporting elements. To avoid visibility, they use an unnecessarily large cross-section, which increases the cost. 15 For example, in the study by Feng et al. [1], at the level of steel beam caps The panels have been used, and potential damage to these elements is expected. However, As stated on page 11 of this study in the literature, in order to prevent damage to the beam... the moment value carried by the connection, the maximum elastic moment capacity of the beam It is stated that it is designed for a situation where it is 45%. 20 Sarkisian et al. [2] used Pin-Fuse to transmit moment due to friction between plates. They developed a beam-column connection which they called a joint. This connection's beam cross-section... up to 80% of the plastic moment capacity (approximately 90% of the elastic moment capacity). It has been stated that it carries a moment of 93%. Furthermore, the Pin-Fuse Joint has a moment of 25%. There is no information available on whether it can be disassembled again. Peng et al. [3] They developed a demountable connection using plate connections in the beam headers. The damage that will occur here will be to these panels, damage to the load-bearing elements. It is predicted that this will not occur. However, in their studies, the moment of the union Its capacity is only 25-35% of the elastic moment capacity of the beam cross-section. is happening. In conclusion, due to the negative aspects described above and the current solutions being the subject of discussion... Due to its shortcomings, an improvement is needed in the relevant technical field. It has been made. 35 2 Brief Description of Find The present invention meets the aforementioned requirements and overcomes all the disadvantages. It relates to the beam-column connection device, which eliminates the need for a separate connection and offers some additional advantages. 5 The invention was created by drawing inspiration from existing situations and overcoming the aforementioned drawbacks. It aims to solve the problem. The invention provides a new method for connecting a beam to a column in moment-transferring structural frames. It includes a connection device. This device is attached to the load-bearing elements of the beam and column. They are connected with bolts. This allows them to be disassembled and replaced. The device that is the subject of the invention allows the beam to withstand external loads, especially seismic loads. The aim is for it to remain entirely within the elastic region (without being damaged). Possible damages, It is designed so that buckling will occur in the buckling plates inside the apparatus. Buckling 15 If the plates are damaged, the parts where the apparatus is attached with bolts should be repaired. It is disassembled and removed, and a new apparatus is mounted, thus reattaching it to the supporting element. It is ensured that it can be used. Unlike applications within the prior art, the subject of this invention is a study involving 20 The moment value carried by the connection is the elastic moment capacity of the beam (beam (depending on its length) it is 100-120% of the moment carrying capacity. In terms of the regulations, the non-modifiable feature is that the beam is damaged. It has the same moment carrying capacity as the connections. Here As can be seen, the moment carrying capacity of the combination that is the subject of the invention is 25 times higher than the others. It is higher. Another aim of the invention is to create a system that can also be used in reinforced concrete and wooden structures. The aim is to develop a system. Although the system in question is based on steel frames... Although exemplified here, it can also be used in reinforced concrete and wooden structures. 30 The invention describes a novel connection method for connecting a beam to a column in structural frames. It includes. This type of connection allows load-bearing elements such as beams and columns to withstand earthquakes. The aim is to prevent damage to the elements. For example, the Turkish Building Earthquake... According to the regulation, the minimum height requirement for beam-column connections in steel buildings is 35. 3 It must provide a relative floor displacement angle of at least 0.04 radians. Six models that achieve this. The number of steel beam-column connections is specified in the Turkish Building Earthquake Regulations. For these specified steel beam-column connection types, the AISC 358-16 (Prequalified) standard in the USA applies. Connections for Special and Intermediate Steel Moment Frames for Seismic The regulation entitled "Applications" was used. The design of these combination types is based on 5 Possible damage at the connection was observed as localized torsions in the beam flanges and web, beam It is based on the principle of plasticization of the cross-section. Therefore, the beam after damage. because it has become unusable and the damaged beam needs to be replaced Due to its extreme difficulty, the structure may not be usable again after an earthquake. Similar behavior can be observed in reinforced concrete and wooden structures. The existing 10 The invention suggests that potential damage can occur between a beam and a column in steel, reinforced concrete, or wooden structures, instead of the beam itself. occurrence in the beam-column connection apparatus with buckling plates placed between them This ensures its arrival. These bolts are attached to the beam and column in a removable manner. The device can be easily removed and replaced with a new one in case of possible damage. It can be changed. 15 To solve existing problems in the technical field and to fulfill the aforementioned objectives. The invention is a connection for linking the load-bearing elements of beams and columns together. It has a device;  During load transfer from beam to column, the moment in the beam is 20 to the force couple. by separating, at least one upper buckling that accommodates the portion of the beam's top flange. sign,  During load transfer from beam to column, the moment in the beam to the force couple by separating, at least one sub-buckling that accommodates the portion allocated to the beam's lower flange. plate, 25  located at the center of the apparatus in question and the rotation of the provided connection a shear bolt forming the point,  connected to each other via the shear bolt in question, from beam to column During load transfer, the first group resists the shear force in the beam. slip plate and second group slip plate, 30  Multiple options that allow the device in question to be mounted on beams and columns It contains a large number of mounting plates. The structural and characteristic features and all the advantages of the invention are given in the figures below. Thanks to the detailed explanation written with references to these figures, it becomes clearer. 35 4 This will be understood as such, and therefore the evaluation will also take these forms and detailed explanations into account. This should be done taking that into consideration. Ways to Help Understand the Discovery Figure 1 shows the appearance of the apparatus, which is the subject of the invention, at the beam-column junction. is provided. Figure 2 shows the general placement of the device, which is the subject of the invention, at the beam-column joint. The appearance is given. 10 Figure 3 shows the general view of the apparatus that is the subject of the invention. Figure 4 shows the disassembled view of the apparatus that is the subject of the invention. Figure 5 shows a general view of the beam and its components. Figure 6 shows a general view of the column and its components. Figure 7 shows the damage status of the beam-column connection example where the apparatus is located. 20 is provided. Figure 8 shows the damage status of the beam. Figure 9 shows the plastic deformation distributions of the buckling plates. 25 Explanation of Part References 1 Device 2 Beams 30 3 Columns 4. First group assembly bolts Second group of assembly bolts 6 First top cover plate 7 Second top cover plate 35 8. First group mounting plate 9. Second group mounting plate First fascia plate 11 Second fascia plate 12 Upper buckling plate 5 13 Slip bolts 14 Lower buckling plate Group 1 slip plate 16 Second group sliding plate 17 Beam bottom cover plate 10 18 Beam mounting plate 19 Beam endplate Box plate 21 Column bottom cover plate 22 Column mounting plate 15 Detailed Description of Find In this detailed description, the preferred configurations of the apparatus (1) which is the subject of the invention are described. It is explained solely for the purpose of better understanding the subject. 20 The invention is developed for use in the field of structural engineering, particularly in buildings. with a connecting device (1) that connects the load-bearing elements of beam (2) and column (3). It is related. In Figure 1, the apparatus (1) which is the subject of the invention is the connection of the beam (2) and the column (3). The location is shown. 25 The device subject to the invention (1) consists of at least one upper buckling plate (12) and at least one lower It includes a buckling plate (14). The upper buckling plate (12) connects the beam (2) to the column (3). During load transfer, the moment in the beam (2) is separated into a force couple, and the beam (2) top It fulfills its share of the title. Preferably made of steel material. 30 The dimensions of the upper buckling plate (12) are determined according to the force it will carry. The lower buckling plate (14) is used during load transfer from the beam (2) to the column (3), in the beam (2) The moment is separated into a force couple and compensates for its share in the lower flange of the beam (2). The lower buckling plate (14) which is preferably made of steel material Its dimensions are determined according to the force it will withstand. The upper buckling plate in question is 35 6 (12) and the lower buckling plate (14) are preferably made of steel material. It is welded to both the first butt plate (10) and the second butt plate (11). First group shear plates (15) which are preferably made of steel material when welded to the first face plate (10), preferably made of steel material the second group of incoming slip plates (16) to the second end plate (11) 5 It originates from. The first group of shear plates (15) and the second group of shear plates (16) are at least close to each other. It is joined by means of a shear bolt (13). Also, the first top cover plate (6) both the first group mounting plates (8) and the first end plate (10) 10 while welding, the second top cover plate (7) is connected to both the second group of mounting plates (9) It is also welded to the second face plate (11). The sliding bolt (13) is located in the center of the apparatus (1) that is the subject of the invention, and the assembly It forms the pivot point. It consists of 15 high-strength bolts. The dimensions of the shear bolt (13) are determined according to the force it will carry. On the beam (1) side, the beam end plate (19) is welded to the beam (1). Also, the beam The mounting plates (18) and the beam bottom cover plate (17) are attached to each other and to the beam end. It is welded to the plate (19). 20 On the side of column (3) are the column mounting plates (22) and the column bottom cover plate (21) They are related to each other and to the column (3) header. Also column (3) Box plate (20) used to strengthen the body also to the column (3) heads It originates from. 25 The device in question (1) is placed between the beam (2) and the column (3) as shown in Figure 2. It is installed by lowering it from top to bottom, with the first one on the beam side. by means of group mounting bolts (4), second group mounting bolts (5) on the column side It is assembled by means of. By placing the apparatus (1) as shown in Figure 2, the apparatus 30 (1) between the first group mounting plates (8) beam mounting plates (18) the second of the apparatus (1) Group mounting plates (9) are placed between column mounting plates (22). Afterwards, first group mounting plates (8) and beam mounting plates (18) first group column mounting via mounting bolts (4) with second group mounting plates (9) 7 The plates (22) are connected to each other by means of the second group of mounting bolts (5). All of the aforementioned mounting plates are preferably manufactured from steel. Damage condition of a beam (2) – column (3) junction example in which the invention is located is shown in Figure 7, The damage condition of the beam (2) is shown in Figure 8. As seen here, beam (2) 5 and column (3) load-bearing elements remained in the elastic region and plasticized (damaged) This has been observed in buckling plates. Plastic deformation of buckling plates. Their distributions are shown in Figure 9. (The numbers in Figures 7-9 represent plastic deformation.) (their values.) The invention apparatus (1) is compared with competing solutions in the known state of the art. The comparison of elastic moment capacity is given in the table below. Feature Subject of the Invention Device Opponent Solution 1 (Feng et al. [1]) Competing Solution 2 (Sarkisian et al. [2]) Opponent Solution 3 (Peng et al. [3]) Momentum transport kapasitesi (1,0-1,2)* Elastik moment kapasitesi (0,11-0,45)* Elastik moment kapasitesi (0,90-0,93)* Elastik moment kapasitesi (0,25-0,35)* Elastik moment kapasitesi 8 REFERANSLAR 1. Feng, Y., Wei, M., Chong, X., Jiang, Q., & Zhu, Y. (2022). Design and numerical analysis of steel frame joints with replaceable buckling-restrained links. Journal of Constructional Steel Research, 196, 107415. 5 https: / / doi.org / 10.1016 / j.jcsr.2022.107415 2. Sarkisian, M., Mathias, N., Garai, R., Uang, C.-M., & Kim, D.-W. (2011). Pin- Fuse FrameTM: Full Scale Tests. SEAOC 2011 CONVENTION PROCEEDINGS. 10 3. Peng, H., Ou, J., & Mahin, S. (2020). Design and numerical analysis of a damage-controllable mechanical hinge beam-to-column connection. Soil Dynamics and Earthquake Engineering, 133. https: / / doi.org / 10.1016 / j.soildyn.2020.106149 15

Claims

9 REQUESTS 1. To connect the load-bearing elements of beam (2) and column (3), a connection The device is (1) and its feature is;  During load transfer from beam (2) to column (3), the moment in beam (2) is a force 5 by separating into pairs, at least one upper part that meets the share of the upper part of the beam (2) buckling plate (12),  During load transfer from beam (2) to column (3), the force of the moment in beam (2) by separating into pairs, at least one sub-heading that meets the share of the beam (2) sub-heading. buckling plate (14), 10  the rotation of the connection provided, located in the center of the said apparatus (1). a shear bolt forming the point (13),  connected to each other by means of the shear bolt (13) and from the beam (2) during load transfer to the column (3) resists the shear force in the beam (2) first group slip plate (15) and second group slip plate (16), 15  enabling the apparatus (1) to be mounted on the beam (2) and column (3) It includes multiple mounting plates.

2. A connecting device (1) in accordance with claim 1, the feature of which is; to both the first end plate (10) and the upper buckling plate (11) welded to the second end plate 20 (12) and includes a lower buckling plate (14).

3. A connecting device (1) in accordance with claim 1, the feature of which is; to the first end plate (10) resulting in the first group slip plate (15) and the second end plate (11) The second group resulting from this is the inclusion of slip plates (16). 25 4. A connecting device (1) in accordance with claim 1, whose feature is; as a mounting plate. The first group includes mounting plates (8).

5. A connecting device (1) in accordance with claim 1, whose feature is; 30 as a mounting plate. The second group includes mounting plates (9).

6. A connecting device (1) in accordance with claim 1, whose feature is; beam as a mounting plate. It includes a mounting plate (18).

7. A connecting device (1) in accordance with claim 1, whose feature is; as a mounting plate. It includes a column mounting plate (22).

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