Connecting joint of steel structure double-layer net rack support and concrete column foot

Abstract

The utility model belongs to the technical field of steel structure net rack supports, and particularly relates to a connecting node of a steel structure double-layer net rack support and a concrete column foot, which comprises a column foot main body, a water-stop sheet is arranged in the column foot main body, a plurality of anchor bolts are arranged at the bottom of the water-stop sheet, a shear-resistant block is arranged on the end face of a buffer plate, and the shear-resistant block is arranged on the end face of the buffer plate. A buffer plate is arranged above the water stop plate, a buffer groove is formed in the end face of the buffer plate, a plurality of spring plates are arranged between the buffer groove and the shear resistant block, and a net rack support is arranged above the buffer plate. And by arranging the water-stop sheet, water in concrete can be separated, the water is prevented from corroding the steel structure, and the stability of the steel structure is improved.

Description

Technical Field

[0001] The utility model belongs to the technical field of steel structure grid supports, in particular to a connection node between a steel structure double-layer grid support and a concrete column foot. Background Art

[0002] With the continuous development of construction technology, steel double-layer grid supports are widely used in industrial and civil buildings due to their excellent stress-bearing performance and adaptability. Steel double-layer grid supports are an important component of grid structures and are used to support and fix steel grids. Usually, the connection between steel double-layer grid supports and concrete is made by bolt connection or embedded parts connection. The connection between steel double-layer grid supports and concrete requires a reasonable connection method and structure to ensure the stability, safety and reliability of the connection.

[0003] For example, patent number CN213682852U discloses a rigid limit support suitable for the base of a steel column. A base plate is fixed to the bottom of the steel column base, and a plurality of shear keys and anchor bolts are pre-embedded in concrete. An embedded plate is pre-embedded on the top surface, and four limit vertical plates are provided on the upper plate surface corresponding to the periphery of the base plate. The base plate is provided with a plurality of oblong holes for assembling the anchor bolts. At the base node, the steel column is assembled on the embedded plate with the base plate, and a first PTFE plate is sandwiched between the base plate and the embedded plate. The base plate and the embedded plate are fixedly connected at each oblong hole by anchor bolts. A second PTFE plate is sandwiched between the base plate and the anchor pad. Each shear key is fixed to the steel column base. After assembly, a horizontal gap is left between the base plate and each limit vertical plate on the embedded plate, which serves as a sliding gap for the base plate. The utility model can solve the problem of large foundation reaction force under temperature stress in steel structure buildings. It is convenient and fast to construct, has reliable connection, and is economical and applicable.

[0004] In the existing technology, by setting embedded plates and PTFE plates, the utility model can solve the problem of large foundation reaction force of steel structure buildings under temperature stress, but the structure still has the following problems: First, the existing technology uses anchor bolts to connect with concrete, which does not have a shock-absorbing effect. When subjected to external force, the concrete is easily damaged by the steel structure; second, the concrete column base is connected deep to the ground, and the moisture on the ground will penetrate into the concrete. The moisture will corrode the connection structure inside and on the surface of the concrete, causing damage to the connection structure and affecting the service life. Utility Model Content

[0005] In order to overcome the deficiencies of the prior art, the utility model provides a connection node between a double-layer steel structure grid support and a concrete column base. By arranging a buffer plate and a spring plate, the grid support can be buffered, thereby improving the shock absorption capacity of the grid support and thus increasing the service life of the grid support. By arranging a water-blocking plate, the moisture in the concrete can be isolated, preventing moisture from corroding the steel structure and improving the stability of the steel structure.

[0006] In order to achieve the above-mentioned purpose, the present invention provides the following technical solutions: a connection node between a steel structure double-layer grid support and a concrete column base, comprising a column base body, a water baffle is arranged inside the column base body, a plurality of anchor bolts are arranged on the bottom of the water baffle, a buffer plate is arranged above the water baffle, a buffer groove is arranged on the end face of the buffer plate, a shear block is arranged on the end face of the buffer plate in the buffer groove, a plurality of spring plates are arranged between the buffer groove and the shear block, and a grid support is arranged above the buffer plate.

[0007] Preferably, an interlayer is provided between one side of the baffle and the water-blocking plate, and concrete is provided inside the interlayer.

[0008] Preferably, a ring-shaped baffle is provided at the bottom of the buffer plate, and one end of the bottom of the baffle abuts against the end surface of the water-blocking plate to form a sandwich.

[0009] Preferably, a plurality of fixing bolts are provided inside the water-blocking plate, the buffer plate and the grid support, and a leveling nut is provided outside the fixing bolts between the grid support and the buffer plate.

[0010] Preferably, a fixing block is provided outside each of the plurality of anchor bolts, the upper end surface of the fixing block abuts against the buffer plate, and the lower end surface of the fixing block abuts against the upper end surface of the water barrier.

[0011] Preferably, a shear groove is provided inside the shear block, and a shear key is provided at the bottom of the grid support, and the shear key is snap-connected to the shear groove.

[0012] In summary, compared with the prior art, the beneficial effects of this solution are:

[0013] (1) The utility model can buffer the grid support by providing a buffer plate and a spring plate, thereby improving the shock absorption capacity of the grid support and thus increasing the service life of the grid support. By providing an interlayer and concrete, the connection strength between the buffer plate and the water barrier can be effectively increased, thereby improving the stability of the connection;

[0014] (2) The utility model can isolate the moisture in the concrete by setting a water-blocking plate, preventing the moisture from corroding the steel structure, reducing the possibility of the steel structure being corroded, and effectively improving the stability of the steel structure. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a three-dimensional diagram of the utility model;

[0016] Figure 2 It is a side view of the utility model;

[0017] Figure 3 for Figure 2 Stereoscopic cross-sectional view at AA in the middle;

[0018] Figure 4 for Figure 3 A partial enlarged view of point B in the middle;

[0019] Figure 5 It is a structural diagram of the spring plate parts;

[0020] Figure 6 It is a structural diagram of the buffer plate parts;

[0021] Figure 7 It is a structural diagram of the watertight plate parts;

[0022] In the figure: 1 column base body; 2 water-blocking board; 3 anchor bolt; 4 shear block; 5 buffer plate; 6 buffer groove; 7 spring plate; 8 grid support; 9 baffle; 11 interlayer; 12 concrete; 13 fixing bolt; 14 leveling nut; 15 fixing block; 16 shear groove; 17 shear key. DETAILED DESCRIPTION

[0023] In order to enable those skilled in the art to better understand the present invention, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of the present invention.

[0024] Example 1:

[0025] refer to Figure 1 、 Figure 2 、 Figure 3 and Figure 4 A connection node between a steel structure double-layer grid support and a concrete column base includes a column base body, a water baffle is arranged inside the column base body, a plurality of anchor bolts are arranged on the bottom of the water baffle, a buffer plate is arranged above the water baffle, a buffer groove is arranged on the end face of the buffer plate, a shear block is arranged on the end face of the buffer plate in the buffer groove, a plurality of spring plates are arranged between the buffer groove and the shear block, and a grid support is arranged above the buffer plate.

[0026] In this solution, there are four anchor bolts 3 arranged in a rectangular direction. The anchor bolts 3 can fix the water baffle 2 inside the concrete column foot 12; the material of the water baffle 2 is corrosion-resistant stainless steel plate with good strength. Installing the water baffle 2 inside the concrete column foot 12 can not only block the upwelling moisture in the concrete 12, but also increase the connection strength between the truss support 8 and the column foot body 1, thereby improving the stability of the device.

[0027] refer to Figure 5 and Figure 6A interlayer 11 is provided between the buffer plate 5 and the water-blocking plate 2, and concrete 12 is provided inside the interlayer 11. A ring-shaped baffle 9 is provided at the bottom of the buffer plate 5, and one end of the bottom of the baffle 9 abuts against the end face of the water-blocking plate to form the interlayer 11.

[0028] In this solution, the baffle 9 is at the bottom of the buffer plate 5 and surrounds the buffer groove 6 to form a barrier for the buffer groove 6. This setting can block the concrete 12 on the outside, preventing the concrete 12 from entering the buffer groove 6 and affecting the buffering effect of the spring plate 7, thereby ensuring that the spring plate 7 can work normally. The other side of the concrete 12 is connected to the column base body 1, so that the concrete 12 is fixed on the top of the water baffle 2, thereby improving the stability of the water baffle 2.

[0029] refer to Figure 5 A plurality of fixing bolts 13 are provided inside the water-blocking plate 2, the buffer plate 5 and the grid support 8, and a leveling nut 14 is provided outside the fixing bolt 13 between the grid support 8 and the buffer plate 5.

[0030] In this solution, the leveling nut 14 can adjust the balance of the grid support 8, so that the grid support 8 and the column base body 1 can better transmit axial force, improve the force-bearing capacity of the structure, and thus improve the overall stability of the structure.

[0031] refer to Figure 7 A fixing block 15 is provided on the outside of each of the plurality of anchor bolts 3 , and the fixing block 15 abuts against the bottom end surface of the buffer plate 5 .

[0032] In this solution, the fixing block 15 is sleeved on the outside of the anchor bolt 3, bearing the pressure of the buffer plate 5, preventing the anchor bolt 3 from being damaged by force, improving the service life of the anchor bolt 3 and the stability of the structure, and when the anchor bolt 3 becomes loose due to stress, the buffer plate 5 on the top will limit the movement of the anchor bolt 3, further improving the stability of the anchor bolt 3.

[0033] refer to Figure 2 and Figure 7 A shear groove 16 is provided inside the shear block 4, and a shear key 17 is provided at the bottom of the grid support 8, which is connected with the shear groove 16 in a coordinated manner.

[0034] In this solution, during installation, the shear keys 17 are inserted into the shear grooves 16. By setting the shear keys 17, the wind load resistance of the structure can be improved, the horizontal shear force resistance of the truss support 8 can be enhanced, and the truss support 8 and the column base body 1 can be fixed to prevent the truss support 8 from slipping, which is beneficial to enhancing the overall stability of the structure. The truss support 8 can be leveled by adjusting the height of the leveling nut 14. After the leveling nut 14 is leveled, micro-expansive concrete can be injected into the shear grooves 16 for secondary pouring to enhance the friction between the truss support 8 and the shear block 4 and improve the connection strength of the device.

[0035] During installation, first fix the baffle 2 on the end face of the column base body 1 through the anchor bolts 3, then put the fixing blocks 15 on the outside of the anchor bolts 3, and then fix the buffer plate 5 on the top of the baffle 2 through the fixing bolts 13, and make the buffer plate 5 abut against the top of the fixing block 15 to prevent the buffer plate 5 from damaging the anchor bolts 3; after forming an interlayer 11 between the buffer plate 5 and the baffle 2, fill it with concrete 12, and after the concrete 12 solidifies, it can fix the baffle 2 with the column base body 1, thereby improving the connection between the grid support 8 and the column base body 1. Stability; at the same time, the spring plate 7 is placed between the baffle 9 and the shear block 4, and then the leveling nut 14 is installed on the fixing bolt 13 extending from the top of the buffer plate 5, and then the truss support 8 is fixed to the top of the leveling nut 14, and the shear key 17 at the bottom of the truss support 8 is inserted into the shear groove 16 of the shear block 4, and then the truss support 8 is leveled by the leveling nut 14. After the leveling is completed, micro-expansion concrete is injected into the shear groove 16 to increase the connection strength between the truss support 8 and the buffer plate 5, thereby improving the stability of the structure.

[0036] For example, certain words are used in the specification and claims to refer to specific components. Those skilled in the art should understand that hardware manufacturers may use different terms to refer to the same component. This specification and claims do not use differences in names as a way to distinguish components, but use differences in the functions of the components as the criteria for distinction. For example, "including" mentioned throughout the specification and claims is an open term, so it should be interpreted as "including but not limited to". "Approximately" means that within an acceptable error range, those skilled in the art can solve the technical problem within a certain error range and basically achieve the technical effect.

[0037] It should be noted that the terms "include," "comprises," or any other variations thereof are intended to encompass non-exclusive inclusion, such that a product or system comprising a series of elements includes not only those elements but also other elements not explicitly listed, or elements inherent to such product or system. In the absence of further limitations, an element defined by the phrase "comprising a..." does not exclude the presence of other identical elements in the product or system comprising the element.

[0038] The above description shows and describes several preferred embodiments of the present application. However, as previously mentioned, it should be understood that the present application is not limited to the form disclosed herein and should not be construed as excluding other embodiments. Instead, the present application can be used in various other combinations, modifications, and environments and can be modified within the scope of the application concept described herein through the above teachings or technology or knowledge in the relevant field. Modifications and changes made by those skilled in the art that do not depart from the spirit and scope of the present application should be protected by the claims appended hereto.

Claims

1. A connection node between a steel structure double-layer grid support and a concrete column foot, comprising a column foot body (1), characterized in that: A water baffle (2) is provided inside the column base body (1), a plurality of anchor bolts (3) are provided on the bottom of the water baffle (2), a buffer plate (5) is provided above the water baffle (2), a buffer groove (6) is provided on the end face of the buffer plate (5), a shear block (4) is provided in the buffer groove (6) on the end face of the buffer plate (5), a plurality of spring plates (7) are provided between the buffer groove (6) and the shear block (4), and a grid support (8) is provided above the buffer plate (5).

2. The connection node between a steel structure double-layer grid support and a concrete column base according to claim 1, characterized in that: An interlayer (11) is provided between the buffer plate (5) and the water-blocking plate (2), and concrete (12) is provided inside the interlayer (11).

3. The connection node between a steel structure double-layer grid support and a concrete column base according to claim 2, characterized in that: A ring-shaped baffle (9) is provided at the bottom of the buffer plate (5), and one end of the bottom of the baffle (9) abuts against the end surface of the water-blocking plate (2) to form an interlayer (11).

4. The connection node between a steel structure double-layer grid support and a concrete column base according to claim 2, characterized in that: A plurality of fixing bolts (13) are provided inside the water-blocking plate (2), the buffer plate (5) and the grid support (8), and a leveling nut (14) is provided outside the fixing bolts (13) between the grid support (8) and the buffer plate (5).

5. The connection node between a steel structure double-layer grid support and a concrete column base according to claim 1, characterized in that: A fixing block (15) is provided outside each of the plurality of anchor bolts (3), the upper end surface of the fixing block (15) abuts against the buffer plate (5), and the lower end surface of the fixing block abuts against the upper end surface of the water barrier.

6. The connection node between a steel structure double-layer grid support and a concrete column base according to claim 1, characterized in that: The anti-shear block (4) is provided with an anti-shear groove (16) inside, and the bottom of the grid support (8) is provided with an anti-shear key (17), and the anti-shear key (17) is connected to the anti-shear groove (16) by snapping.

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