Steel column base expansion joint

Abstract

The utility model provides a steel column base expansion joint, and belongs to the technical field of building construction. Comprising a zero-layer plate and a foundation steel column which are integrally poured through concrete. The column foot steel ring is welded, erected and formed on the lower middle portion of the column foot steel ring through short steel bars, and the foundation steel column is completely surrounded by the column foot steel ring; the zero-layer plates are formed by pouring after being bound through steel bars, and the steel bars located on the outer sides of the column foot steel rings are in spot welding with the outer side walls of the column foot steel rings. The column foot steel ring is formed by matching the two galvanized steel rings with the plastic bolts, and the deformation joint is additionally arranged at the column foot part, so that the durability of the building floor of the factory building is improved, and the problem of cracking of the column foot part of the ground of the factory building due to uneven settlement is solved; the two layers of column foot steel rings with the inner ring and the outer ring sleeved are arranged, the interiors of the two layers of column foot steel rings are separately poured, C45 micro-expansion fine aggregate concrete is adopted for compaction, and the pressure resistance and durability of the column foot steel rings are improved.

Description

Technical Field

[0001] The utility model relates to the technical field of building construction, and particularly relates to a steel column base expansion joint. Background Art

[0002] In existing industrial factories and large building structures, the steel column base, as a key part connecting the building foundation and the upper structure, its stability and durability are directly related to the safety and service life of the entire building. Especially when dealing with structural deformations caused by foundation settlement, temperature changes, etc., the design of the steel column base is particularly important.

[0003] Traditional steel column base designs often adopt a single fixed connection method, such as direct welding or bolt connection. When dealing with complex working conditions such as uneven foundation settlement or temperature changes, this design method is prone to stress concentration, cracking, or even damage, seriously affecting the overall stability of the building. In addition, traditional steel column base designs also have many inconveniences in terms of maintenance and replacement, such as high replacement difficulty, high cost, and affecting the normal use of the building.

[0004] Therefore, this application provides a steel column base expansion joint to meet the requirements. Content of the Utility Model

[0005] The technical problem to be solved by the utility model is to provide a steel column base expansion joint to solve the existing dd problems.

[0006] To solve the above technical problems, the utility model provides the following technical solutions:

[0007] A steel column base expansion joint includes: a zero-layer plate and a foundation steel column, which are integrally cast with concrete; a column base steel ring, which is welded and supported by short reinforcing bars in the middle and lower parts of the column base steel ring, and the column base steel ring completely surrounds the foundation steel column; the zero-layer plate is formed by binding and pouring steel bars, and the steel bars located outside the column base steel ring are spot-welded to the outer side wall of the column base steel ring.

[0008] Preferably, the column base steel ring adopts a double-layer steel ring structure, including two galvanized steel plates connected by plastic bolts, and the height of the steel ring is the same as the thickness of the floor slab.

[0009] Preferably, there is a spacing between the radius of the column base steel ring and the foundation steel column.

[0010] Preferably, the short reinforcing bars used for supporting the column base steel ring are cross-distributed, and the welding points are spaced more than 30 cm apart.

[0011] Preferably, the column base steel ring has two layers, which are arranged in an inner and outer ring sleeve, and the short reinforcing bars used for supporting the steel ring are spot-welded in the annular area between the two layers of column base steel rings.

[0012] Preferably, the inside of the two-layer column base steel ring is poured separately and compacted with C45 slightly expanded fine aggregate concrete.

[0013] Compared with the prior art, the present utility model has at least the following beneficial effects:

[0014] 1. By using a column base steel ring composed of two galvanized steel rings and plastic bolts, a deformation joint is added at the column base part, improving the durability of the factory building floor and solving the cracking problem caused by uneven settlement at the column base part of the factory building floor.

[0015] 2. By arranging two layers of column base steel rings with inner and outer sleeves, and the inside of the two-layer column base steel rings is poured separately and compacted with C45 slightly expanded fine aggregate concrete, the compressive capacity and durability of the column base steel ring are improved. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] The drawings incorporated herein and constituting a part of the specification illustrate embodiments of the present disclosure and, together with the specification, are further used to explain the principles of the present disclosure and enable those skilled in the relevant art to implement and use the present disclosure.

[0017] Figure 1 It is a schematic diagram of concrete pouring for the present utility model;

[0018] Figure 2 It is a schematic diagram of the connection style of the column base steel ring of the present utility model;

[0019] Figure 3 It is a schematic diagram of the installation of the steel ring of the present utility model.

[0020] In the figure: 1. Column base steel ring; 2. Foundation steel column; 3. Zero-layer plate; 4. Plastic bolt.

[0021] As shown in the figure, in order to clearly implement the structure of the embodiments of the present utility model, specific structures and devices are marked in the figure, but this is only for schematic needs and is not intended to limit the present utility model to the specific structure, device and environment. According to specific needs, those of ordinary skill in the art can adjust or modify these devices and environments, and the adjustments or modifications made are still included in the scope of the appended claims. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0022] The following describes in detail a steel column base expansion joint provided by the present utility model in conjunction with the drawings and specific embodiments. At the same time, it should be noted here that in order to make the embodiments more detailed, the following embodiments are the best and preferred embodiments. For some well-known technologies, those skilled in the art can also adopt other alternative ways to implement them; and the drawings are only for more specifically describing the embodiments and are not intended to specifically limit the present utility model.

[0023] AsFigure 1 - Figure 3 As shown, an embodiment of the utility model provides a telescopic joint for a steel column base, including: a zero-level slab 3 and a foundation steel column 2, which are integrally cast with conventional C25-C35 grade concrete, economical and practical; the zero-level slab 3 serves as the bottom structure of the building, directly bearing the upper load, and is integrally cast with the foundation steel column 2 through concrete, enhancing the stability of the overall structure. The foundation steel column 2 serves as a vertical load-bearing member, extending deep into the ground to ensure the stability of the building.

[0024] A column base steel ring 1 is formed by welding and supporting short steel bars in the middle and lower parts of the column base steel ring 1, and the column base steel ring 1 completely surrounds the foundation steel column 2; the column base steel ring 1 adopts a double-layer steel ring structure, including two galvanized steel plates connected by plastic bolts 4, and the height of the steel ring is the same as the thickness of the floor slab, which not only ensures the strength and durability of the steel ring, but also facilitates installation and maintenance. The double-layer structure also increases the anti-deformation ability of the steel ring, effectively resisting external pressure.

[0025] The zero-level slab 3 is formed by binding steel bars and then pouring, and the steel bars located outside the column base steel ring 1 are spot-welded to the outer wall of the column base steel ring 1, directly conducting the extrusion stress received by the column base steel ring 1 to the steel bar structure used to support the zero-level slab 3, further improving the overall structural strength of the ground.

[0026] As Figure 3 shown, there is a spacing between the radius of the column base steel ring 1 and the foundation steel column 2, and the distance is controlled at about 10 cm, which not only allows the foundation steel column 2 to have a certain movement space when subjected to external forces, thus avoiding damage caused by stress concentration. At the same time, the setting of the spacing also facilitates the filling and replacement of the filling material in the telescopic joint.

[0027] The short steel bars used to support the column base steel ring 1 are cross-distributed, and the welding points are spaced more than 30 cm apart. The galvanized layer on the surface of the steel ring is not damaged during the welding process, ensuring the corrosion resistance of the column base steel ring 1. When the column base steel ring 1 is supported, the corner positions are made with an arc transition to avoid stress concentration caused by right-angle bending.

[0028] Among them, when multiple foundation steel columns are enclosed by the same column base steel ring 1 (refer to Figure 3 ), the galvanized steel plates forming the column base steel ring 1 follow the distribution structure of multiple foundation steel columns 1, completely surrounding the outside of the foundation steel column 1, and the bending positions are treated with an arc surface.

[0029] As Figure 1 shown, the column base steel ring 1 has two layers, arranged in an inner and outer ring sleeve to ensure the stability and bearing capacity of the steel ring. In addition, the short steel bars are also spot-welded in the annular area between the two layers of the column base steel ring 1, further enhancing the overall stability of the steel ring.

[0030] As Figure 1As shown, the two-layer column base steel ring 1 is poured separately inside, and C45 slightly expanded fine aggregate concrete is used for compaction. This kind of concrete has the characteristics of high strength, high density and slight expansion, which can effectively fill the internal space of the steel ring, improve the compressive capacity and durability of the steel ring. At the same time, the slight expansion characteristic can also compensate for the shrinkage deformation of the concrete during the hardening process and reduce the generation of cracks.

[0031] For the technical solution provided by the present utility model, during the construction of an industrial building, first, the foundation steel column 2 is buried underground and fixed in position according to the design requirements. Subsequently, the column base steel ring 1 with a double-layer structure is installed around the foundation steel column 2 and supported by welding with short steel bars. Then, a steel bar mesh is tied outside the column base steel ring 1 and the concrete of the zero-layer slab 3 is poured. During the pouring process, special attention is paid to pouring the C45 slightly expanded fine aggregate concrete separately into the two-layer column base steel ring 1 to ensure its density and strength. Finally, after the concrete hardens, the formwork is removed and subsequent construction is carried out.

[0032] The present utility model covers any substitutions, modifications, equivalent methods and solutions made on the essence and scope of the present utility model. In order to enable the public to have a thorough understanding of the present utility model, specific details are described in detail in the above preferred embodiments of the present utility model, and those skilled in the art can fully understand the present utility model without these detailed descriptions. In addition, in order to avoid unnecessary confusion to the essence of the present utility model, well-known methods, processes, procedures, components and circuits are not described in detail.

[0033] The above are only the preferred embodiments of the present utility model. It should be noted that for those of ordinary skill in the art, without departing from the principle of the present utility model, several improvements and refinements can be made, and these improvements and refinements should also be regarded as the protection scope of the present utility model.

Claims

1. A telescopic joint for a steel column base, characterized in that, Including: A zero-layer slab (3) and a foundation steel column (2), which are integrally cast with concrete; A column base steel ring (1), which is formed by welding and supporting short steel bars in the middle and lower parts of the column base steel ring (1), and the column base steel ring (1) completely surrounds the foundation steel column (2); The zero-layer slab (3) is formed by binding steel bars and then pouring, and the steel bars located outside the column base steel ring (1) are spot-welded to the outer side wall of the column base steel ring (1).

2. The expansion joint of the steel column base according to claim 1, characterized in that, The column base steel ring (1) adopts a double-layer steel ring structure, including two galvanized steel plates connected by plastic bolts (4), and the height of the steel ring is the same as the thickness of the floor slab.

3. The steel column base expansion joint according to claim 1, characterized in that, There is a spacing between the size radius of the column base steel ring (1) and the foundation steel column (2).

4. The steel column base expansion joint according to claim 1, characterized in that, The short steel bars used for supporting the column base steel ring (1) are cross-distributed, and the welding points are spaced more than 30 cm apart.

5. The steel column base expansion joint according to claim 1, characterized in that The column base steel ring (1) is provided with two layers, which are arranged in an inner and outer ring sleeve, and the short steel bars for supporting the steel ring are spot-welded in the annular area between the two layers of the column base steel ring (1).

6. The expansion joint of the steel column base according to claim 1, characterized in that, The inside of the two layers of the column base steel ring (1) is separately poured and compacted with C45 slightly expanded fine aggregate concrete.

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