A high-efficiency connecting device for brb and secondary structure wall

Abstract

This utility model relates to the field of wall connection technology and discloses an efficient connection device between a BRB (Brick Reinforced Bench) and a secondary structure wall. It includes a channel steel 2C10 and an upper wall of the BRB. A steel frame beam is fixedly connected to the top of the channel steel 2C10, and an embedded part is fixedly connected to the bottom of the channel steel 2C10. A first connecting ear plate is provided on the outer side of the channel steel 2C10, and a tie bar is fixedly connected to the outer side of the first connecting ear plate. Polyurethane foam is provided at the bottom of the upper wall of the BRB. In this utility model, the double-layered channel steel and the tie bar on the connecting ear plate can disperse localized concentrated loads in the wall, effectively transferring these loads to the main structure, reducing stress concentration in the wall. Under seismic action, the tie bar forms an energy dissipation mechanism, helping to dissipate seismic energy and reducing damage to the building wall. The tie bar can also restrain the development of temperature shrinkage cracks, ensuring the durability and safety of the wall, and has significant market and social value.

Description

Technical Field

[0001] This utility model relates to the field of wall connection technology, specifically to a high-efficiency connection device between a BRB and a secondary structure wall. Background Technology

[0002] In steel structure construction, buckling-restrained braces (BRBs) are used to comprehensively improve the seismic performance of traditional braced frames. Braced structural systems are widely used in building structures. Ordinary braces buckle under compression, resulting in a sharp decrease in stiffness and load-bearing capacity. Under earthquakes or wind, the internal forces of the brace oscillate between compression and tension. As the brace gradually transitions from a buckling state to a tension state, its internal forces and stiffness approach zero.

[0003] Buckling-restrained braces generally consist of three parts: core elements, restraint elements, and sliding mechanism elements. The core element, also known as the core material or principal load-bearing element, is the main load-bearing component and is made of steel plates of a specific strength. Common cross-sectional shapes include cruciform, T-shaped, double-T-shaped, and straight-line shapes, each suitable for different stiffness and energy dissipation requirements. The restraint element, also known as the lateral bracing element, provides the restraint mechanism to prevent overall or residual buckling of the core element under axial compression. Common restraint forms include steel tube-filled concrete or pure steel structural restraint. The sliding mechanism element, also known as the delamination element, provides a sliding interface between the core element and the restraint element, ensuring that the brace exhibits similar mechanical properties under tension and compression. This prevents a significant increase in axial pressure caused by friction between the core element and the restraint element due to compressive expansion. These sliding elements are typically made of unbonded materials.

[0004] Traditional methods for connecting BRB structures to walls typically involve constructing sloping reinforced concrete structural columns on the outside of the BRB structure. This involves a series of complex processes, including rebar welding or installation, rebar cage tying, formwork assembly, concrete pouring, vibration, and curing. The construction process is cumbersome, consumes a large amount of materials and labor, and has low efficiency. Traditional wet methods easily cause dust pollution at the construction site; at the same time, the extensive construction methods result in significant waste of concrete and mortar, and low water resource utilization efficiency. During winter construction, due to the cold weather in northern regions, without timely and effective insulation measures, the quality of the structural columns cannot be guaranteed, and they are easily frozen. Furthermore, the construction process results in low worker efficiency and a large input of labor resources.

[0005] With the rapid development of prefabricated buildings in my country, higher requirements have been put forward for safe and civilized construction on construction sites. On the one hand, a faster, safer, and more civilized construction site environment is needed, and on the other hand, higher quality building products are required. Utility Model Content

[0006] The purpose of this invention is to provide a high-efficiency connection device between BRB and secondary structure wall, which solves the problem that the prior art cannot achieve high-efficiency connection between walls.

[0007] To achieve the above objectives, this utility model provides the following technical solution: a high-efficiency connection device between a BRB and a secondary structure wall, comprising a channel steel 2C10 and an upper wall of the BRB, wherein a steel frame beam embedded part is fixedly connected to the top of the channel steel 2C10, an embedded part is fixedly connected to the bottom of the channel steel 2C10, a first connecting ear plate is provided on the outer side of the channel steel 2C10, a tie bar is fixedly connected to the outer side of the first connecting ear plate, and polyurethane foam is provided at the bottom of the upper wall of the BRB.

[0008] By adopting the above technical solution, channel steel 2C10, as a component of double-section channel steel, together with channel steel C10, forms a skeleton.

[0009] As a further description of the above technical solution: a C10 channel steel is provided on the outer side of the upper wall of the BRB.

[0010] By adopting the above technical solution, the outer side of the C10 channel steel is connected with connecting ear plates and tie bars.

[0011] As a further description of the above technical solution: the top and bottom of the upper wall of the BRB are fixedly connected with steel frame beams.

[0012] By adopting the above technical solution, the steel frame beam is located at the upper and lower ends of the BRB structure.

[0013] As a further description of the above technical solution: a second connecting lug is fixedly connected to the outer side of the C10 channel steel.

[0014] By adopting the above technical solution, the double-channel steel is connected to the wall through tie bars, ensuring the coordinated stress distribution between the double-channel steel and the wall.

[0015] As a further description of the above technical solution: a connecting plate is provided between the channel steel 2C10 and the channel steel C10.

[0016] By adopting the above technical solution, the connecting plate ensures that the double channel steels work together to bear the force, thereby improving the rigidity and stability of the connecting device.

[0017] As a further description of the above technical solution: a bolt is provided between the second connecting ear plate and the channel steel C10.

[0018] By adopting the above technical solution, the bolts are used to connect the first connecting ear plate and the channel steel 2C10 through the bolt.

[0019] As a further description of the above technical solution: A BRB core unit is provided inside the upper wall of the BRB.

[0020] By adopting the above technical solution, the BRB core unit, as the main load-bearing component of the BRB structure, is made of steel plate with specific strength.

[0021] As a further description of the above technical solution: A BRB constraint unit is provided on the outside of the BRB core unit.

[0022] By adopting the above technical solution, the BRB constraint element encloses the BRB core element, providing lateral constraint and preventing the core element from buckling under compression.

[0023] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0024] 1. This utility model provides an efficient connection device between a buckling-restrained brace (BRB) and a secondary structural wall. Firstly, by optimizing the connection device between the BRB structure and the secondary structural wall, double-channel steel and connecting lugs are installed on the outside of the restraint unit, achieving rapid connection and reinforcement with the secondary structural wall. By installing double-channel steel and connecting lugs on the outside of the restraint unit, the buckling-restrained brace (BRB) is separated from the secondary structural wall, meeting the stress and deformation requirements of the two structures under different working conditions. Simultaneously, the double-channel steel and connecting lugs on the outside of the restraint unit act as "structural columns," and wall tie bars are welded to the connecting lugs. These tie bars serve as wall tie bars during wall construction, enhancing the stability and integrity of the wall, and improving its seismic performance.

[0025] 2. This utility model provides a high-efficiency connection device between BRB and secondary structural walls. The double-channel steel and connecting ear plates serve as supporting components for the structural walls, effectively transferring loads. The tie bars on the double-channel steel and connecting ear plates disperse localized concentrated loads within the wall, effectively transferring these loads to the main structure, reducing stress concentration, preventing out-of-plane instability, and ensuring structural stability. Under seismic action, the tie bars form an energy-dissipating mechanism, helping to dissipate seismic energy and reducing damage to the building walls. The tie bars can also constrain the development of temperature shrinkage cracks, ensuring the durability and safety of the walls. This device aligns with future development trends in the construction industry and promotes green and industrialized construction concepts, possessing broad application prospects and significant market and social value. Attached Figure Description

[0026] Figure 1 This is an elevation view of the wall structure of this utility model;

[0027] Figure 2 This is a cross-sectional view of the BRB and steel frame infill wall of this utility model.

[0028] Legend:

[0029] 1. 2C10 channel steel; 2. First connecting ear plate; 3. Tie bar; 4. BRB upper wall; 5. Second connecting ear plate; 6. C10 channel steel; 7. Polyurethane foam; 8. Steel frame beam embedded part; 9. Connecting plate; 10. Bolt; 11. Steel frame beam; 12. BRB constraint element; 13. Embedded part; 14. BRB core element. Detailed Implementation

[0030] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0031] To further understand the contents of this utility model, a detailed description of this utility model will be provided with reference to the accompanying drawings.

[0032] Reference Figure 1 and Figure 2 This utility model discloses an efficient connection device between a BRB and a secondary structural wall, comprising a channel steel 2C101 and an upper wall 4 of the BRB. A steel frame beam 11 is fixedly connected to the top and bottom of the upper wall 4 of the BRB. The steel frame beam 11 bears and transmits the load from the connection device and the BRB, ensuring the stress balance of the entire building structure. A connecting plate 9 is provided between the channel steel 2C101 and the channel steel C106, welded between the channel steel 2C101 and the channel steel C106, spaced 500mm apart. Bolts 10 are installed between the connecting ear plate 5 and the channel steel C106. The BRB core unit 14 is installed inside the upper wall 4 of the BRB. The BRB core unit 14 directly bears axial tension and axial compression loads and dissipates energy through deformation. It is the core component of the BRB seismic performance. The outside is wrapped by restraint unit 12 to prevent buckling. The BRB restraint unit 12 is installed on the outside of the BRB core unit 14. The BRB restraint unit 12 and the core unit together constitute the BRB structure to ensure its mechanical performance stability under tension and compression.

[0033] Reference Figure 1 and Figure 2The top of the channel steel 2C101 is fixedly connected to a steel frame beam embedded part 8, which is fixed to the upper end of the steel frame beam 11 and connected to the upper end of the channel steel C101 by welding. The bottom of the channel steel 2C101 is fixedly connected to an embedded part 13, which is fixed to the lower end of the steel frame beam 11 and connected to the lower end of the channel steel C106 by welding. A first connecting ear plate 2 is provided on the outer side of the channel steel 2C101. The first connecting ear plate 2 is inserted into the mortar joint of the wall to support the aerated concrete block, and together with the tie steel bar, it forms a horizontal tie system to enhance the stability of the wall and replace the tie function of the structural column. The side is fixedly connected with tie bars 3. The tie bars 3 are pressed into the mortar joints of the wall during masonry to distribute the local load of the wall and transfer it to the double-channel steel, preventing the wall from becoming unstable out of plane. At the same time, it forms an energy dissipation mechanism during earthquakes to reduce wall damage. The bottom of the upper wall 4 of the BRB is provided with polyurethane foam 7. The polyurethane foam 7 forms a flexible isolation layer, allowing the BRB structure to freely expand and contract, avoiding the wall from restricting its stress performance, and buffering the compression between the two to prevent cracks from forming. The outer side of the upper wall 4 of the BRB is provided with channel steel C106, and the outer side of the channel steel C106 is fixedly connected with a second connecting ear plate 5.

[0034] Working Principle: Material preparation and fabrication of the channel steel frame: According to the predetermined dimensions, channel steel 1 is welded and fixed to the upper and lower node plates, ensuring a firm weld and uniform, full weld seam. A connecting plate 9 is welded in the middle of the double-section channel steel. The connecting plate 9 has dimensions of 200mm x 50mm x 5mm and is placed at 500cm intervals. The connecting plate 9 is welded to the double-section channel steel to form an integral channel steel frame. Connecting ear plates are set according to the wall masonry module, and precise positions are determined by measuring and marking lines on the channel steel frame to ensure accurate positioning of connecting ear plates 2 and 5, facilitating subsequent masonry work. The connecting ear plates are welded and fixed to the middle connecting plate 9 of the double-section channel steel. The specifications and dimensions of the aerated concrete blocks must be fully considered to ensure that connecting ear plates 2 and 5 are inserted into the masonry work. In the middle of the mortar joint, it forms a tie with the wall 4, and also serves as a supporting component for the aerated concrete blocks, facilitating the construction of the upper masonry. After measurement and positioning, the connecting ear plates 2 and 5 are welded and fixed to the middle connecting plate 9 of the double-channel steel. Before construction, the quality inspector must carefully check whether the installation position is correct. During welding, the appropriate arc voltage should be selected according to the bevel size, number of welding layers and form. A short arc should be used for the root pass to obtain better penetration and ensure the uniformity and fullness of the weld. The connecting ear plate, as a horizontal tie-load member, together with the tie steel bar 3, forms a horizontal wall fixing structure, which replaces the function of a structural column. Therefore, the quality of installation and welding must be strictly guaranteed. After the connecting ear plate is installed, according to The specifications, length, and connection method of the tie bar 3 were determined according to the drawings and specifications. Tie bar 3 was welded to the connecting ear plate. To ensure connection quality, double-sided lap welding was used, with a weld length of 5d. During the aerated concrete block masonry process, tie bar 3 was pressed into the mortar joints to complete its construction. During masonry, the aerated concrete blocks were arranged reasonably according to the positions of tie bar 3 and connecting ear plate to ensure accurate pressing of the tie bar 3 and connecting ear plate into the brick joints. Thick mortar masonry was used for aerated concrete block masonry. The horizontal and vertical mortar joints of the masonry should be straight, uniform in thickness, and dense and full. The thickness of the horizontal mortar joints and the width of the vertical mortar joints in autoclaved aerated concrete block masonry should not exceed 15mm. When laying autoclaved aerated concrete (AAC) blocks, mortar should be laid and laid simultaneously. The horizontal and end faces of the blocks should be fully covered with mortar. During laying, the mortar should be pressed into the horizontal and vertical joints at all times, and any mortar and adhesive squeezed out of the joints should be scraped off immediately. After the measurement and layout are completed and verified by the supervising engineer, the components can be welded and installed on site. After the welding position of the channel steel frame is measured and laid out, it is welded to the upper and lower embedded plates. After welding, the weld quality should be checked. During the installation of tie bars 3 and connecting ear plates, the plane position and elevation of the components should be strictly controlled to ensure accurate installation. When laying AAC blocks, the quality of the masonry should be checked, and the elevation of tie bars 3 should be accurately controlled. The number of brick layers, modules, and positions should be calculated in advance, and the bricks should not be arbitrarily bent or cut.

[0035] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0036] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A high-efficiency connection device between a BRB and a secondary structural wall, comprising a channel steel 2C10 (1) and an upper wall of the BRB (4), characterized in that: The top of the channel steel 2C10 (1) is fixedly connected to a steel frame beam embedded part (8), the bottom of the channel steel 2C10 (1) is fixedly connected to an embedded part (13), the outer side of the channel steel 2C10 (1) is provided with a first connecting ear plate (2), the outer side of the first connecting ear plate (2) is fixedly connected with a tie bar (3), and the bottom of the upper wall of the BRB (4) is provided with polyurethane foam (7).

2. The efficient connection device between BRB and secondary structure wall according to claim 1, characterized in that: The outer side of the upper wall (4) of the BRB is provided with channel steel C10 (6).

3. The efficient connection device between BRB and secondary structure wall according to claim 1, characterized in that: The upper wall (4) of the BRB is fixedly connected to the top and bottom of the steel frame beam (11).

4. The efficient connection device between BRB and secondary structure wall according to claim 2, characterized in that: The outer side of the channel steel C10 (6) is fixedly connected to a second connecting ear plate (5).

5. The efficient connection device between BRB and secondary structure wall according to claim 1, characterized in that: A connecting plate (9) is provided between the channel steel 2C10 (1) and the channel steel C10 (6).

6. The efficient connection device between BRB and secondary structure wall according to claim 4, characterized in that: Bolts (10) are provided between the second connecting ear plate (5) and the channel steel C10 (6).

7. The efficient connection device between BRB and secondary structure wall according to claim 1, characterized in that: The upper wall (4) of the BRB is equipped with a BRB core unit (14).

8. The efficient connection device between BRB and secondary structure wall according to claim 7, characterized in that: A BRB constraint unit (12) is provided on the outside of the BRB core unit (14).

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