A rigidly welded support for construction of a post-deaerator pouring foundation

Abstract

A rigid welded support for the post-cast foundation construction of a deaerator, belonging to the field of deaerator installation technology, includes a deaerator with two bases at the bottom and two precast concrete base plates. Each precast concrete base plate is provided with a concrete support, and each concrete support contains two brackets. Before the concrete support is poured, the brackets are pre-placed on the precast concrete base plate, and the brackets are fixedly connected to the corresponding bases. This utility model solves the problem of process conflicts in traditional processes, improves construction efficiency, shortens the cycle, and reduces costs. Through the cooperation of positioning holes and positioning steel bars, fine adjustment of inclined shims, and welding fixation, the installation accuracy can be effectively guaranteed, ensuring stable support after the deaerator is installed.

Description

Technical Field

[0001] This utility model relates to the field of deaerator installation technology, specifically to a rigid welded support for the construction of a post-deaerator foundation. Background Technology

[0002] Traditional construction techniques for deaerator rooms in main plant buildings often involve first constructing the deaerator foundation and then installing the deaerator itself. However, this process has significant drawbacks: the deaerator installation occupies space, hinders the construction of the upper concrete beams, slabs, and columns, causing process conflicts and interruptions, resulting in reduced construction efficiency, extended construction periods, and increased costs.

[0003] To address the aforementioned issues, existing technologies propose an optimized construction process: first, complete the construction of the upper concrete beam-slab-column structure of the deaerator, then install the deaerator, and finally pour the foundation concrete. This new method effectively improves construction efficiency.

[0004] However, during the implementation of the new construction method, when pouring the concrete for the bottom support of the deaerator, the curing period between pouring and complete solidification makes it difficult to maintain the installation accuracy of the deaerator and the foundation, including design elevation, levelness, and verticality, due to the influence of self-weight load, environmental factors, and construction disturbances. Improper control of installation accuracy will result in a lack of reliable connection between the concrete and the deaerator after solidification, affecting the structural load-bearing capacity and operational stability. Therefore, there is an urgent need to develop a specialized support structure or device with high-precision positioning, real-time adjustment, and stable support functions to ensure construction quality and the structural safety of the deaerator during operation. Utility Model Content

[0005] The purpose of this utility model is to provide a rigid welded support for the construction of the foundation after the deaerator, so as to solve the problems mentioned in the background art.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a rigid welded support for the construction of a post-deaerator foundation, comprising a deaerator with two bases at the bottom and two precast concrete base plates. Each precast concrete base plate is provided with a concrete support seat, and each concrete support seat is provided with two brackets. Before the concrete support seat is poured, the brackets are pre-placed on the precast concrete base plate, and the brackets are fixedly connected to the corresponding bases.

[0007] Preferably, the bracket includes two channel steels, which are welded and fixed together back to back, and square plates are welded and fixedly installed on the upper and lower surfaces of the channel steels.

[0008] Preferably, inclined shims are welded and fixedly installed on the upper surface of the upper square plate and the lower surface of the base. The inclined surfaces of the two inclined shims are fitted together to form a complete cuboid structure, and the two inclined shims are welded and fixed together.

[0009] Preferably, a plurality of pre-embedded steel bars are pre-installed in the precast concrete base slab, and the plurality of pre-embedded steel bars are arranged in a rectangular distribution.

[0010] Preferably, two positioning holes are symmetrically opened through the lower surface of the lower square plate, and four positioning steel bars are pre-embedded on the upper surface of the precast concrete base plate. The positioning steel bars pass through the corresponding positioning holes to position the bracket.

[0011] Preferably, two positioning holes are symmetrically opened through the lower surface of the lower square plate, and four positioning steel bars are pre-embedded on the upper surface of the precast concrete base plate. The positioning steel bars pass through the corresponding positioning holes to position the bracket.

[0012] Preferably, the concrete support is provided with multiple extended steel bars and multiple reinforcing bars. The extended steel bars are fixedly connected to the corresponding pre-embedded steel bars. The extended steel bars and reinforcing bars are arranged in a spatially intersecting manner, and the extended steel bars are fixedly connected to the adjacent reinforcing bars to form a grid-like skeleton.

[0013] Compared with the prior art, the beneficial effects of this utility model are:

[0014] Firstly, it effectively solves the problem of conflicting procedures between deaerator installation and the construction of the upper concrete structure in traditional processes. Through innovative design of brackets and inclined shims, the construction of the upper concrete beam, slab, and column structure of the deaerator room can be completed first, followed by deaerator installation. This avoids the situation where deaerator installation occupies space and hinders the upper construction, significantly improving construction efficiency, shortening the construction cycle, and reducing costs.

[0015] Secondly, it excels in ensuring installation accuracy. The positioning holes on the lower square plate of the bracket work in conjunction with the positioning steel bars embedded in the precast concrete base plate to achieve precise positioning of the bracket. The setting of the inclined shims allows for fine adjustment of the installation height and level of the deaerator, meeting the requirements for high-precision installation. Furthermore, the inclined shims are welded and fixed after being fitted together, ensuring a firm connection between the deaerator base and the bracket.

[0016] Meanwhile, the grid-like skeleton formed by extended steel bars and reinforcing bars inside the concrete support increases the concrete strength, enhances the support effect, ensures the stability of the deaerator during the concrete curing period, and enables a reliable connection between the concrete and the deaerator after the concrete solidifies, thus ensuring the structural load-bearing capacity and operational stability. Attached Figure Description

[0017] Figure 1 This is a perspective view of the present invention.

[0018] Figure 2 This is a schematic diagram of the bracket structure of this utility model.

[0019] Figure 3 This is a schematic diagram of the structure of the precast concrete base plate of this utility model.

[0020] Figure 4 This is a schematic diagram of the pre-embedded steel reinforcement structure of this utility model.

[0021] In the diagram: 1. Deaerator; 11. Base; 2. Precast concrete base slab; 21. Embedded steel bars; 22. Positioning steel bars; 23. Extension steel bars; 24. Reinforcing bars; 3. Bracket; 31. Channel steel; 32. Square plate; 321. Positioning hole; 33. Wedge shim; 4. Concrete support. Detailed Implementation

[0022] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention.

[0023] Please see Figure 1 , Figure 2 , Figure 3 and Figure 4 This utility model provides a technical solution:

[0024] A rigid welded support for the construction of a post-deaerator foundation includes a deaerator 1 with two bases 11 at the bottom and two precast concrete base plates 2. Each precast concrete base plate 2 is provided with a concrete support 4, and each concrete support 4 is provided with two brackets 3. Before the concrete support 4 is poured, the brackets 3 are placed on the precast concrete base plate 2 and the brackets 3 are fixedly connected to the corresponding bases 11.

[0025] It should be noted that, referring to Figure 3 As shown, the bracket 3 consists of two channel steels 31, which are welded together back-to-back. Square plates 32 are welded to both the upper and lower surfaces of the channel steels 31. Welding the square plates 32 further reinforces the structure of the channel steels 31, preventing deformation under stress. Furthermore, the square plates 32 provide a flat and stable support surface for subsequent installation and connection. Combined with… Figure 2 As can be seen, inclined shims 33 are fixedly installed on the upper surface of the upper square plate 32 and the lower surface of the base 11 of the deaerator 1 by welding. The inclined shims 33 play a crucial role, as they can finely adjust the installation height and level of the deaerator 1 to meet the precision requirements of equipment installation.

[0026] When the inclined surfaces of the two wedge shims 33 are pressed together, they form a complete cuboid structure. This pressing method not only ensures close contact between the wedge shims 33, but also allows them to share the weight and force from the deaerator 1. After the inclined surfaces of the two wedge shims 33 are pressed together to form a complete cuboid structure, they are welded together for fixation. By welding the two wedge shims 33 together, the base 11 of the deaerator 1 and the bracket 3 can be firmly connected together, thereby completing the fixed connection between the base 11 and the bracket 3 and ensuring the stability and safety of the deaerator 1 after installation.

[0027] Combination Figure 3 As shown, multiple embedded steel bars 21 are pre-embedded in the precast concrete base slab 2. The multiple embedded steel bars 21 are arranged in a rectangular distribution. Multiple extended steel bars 23 and multiple reinforcing bars 24 are provided in the concrete support 4. The extended steel bars 23 are fixedly connected to the corresponding embedded steel bars 21. The extended steel bars 23 and the reinforcing bars 24 are arranged in a spatially intersecting manner. The extended steel bars 23 are fixedly connected to the adjacent reinforcing bars 24 to form a grid-like skeleton. The grid-like skeleton can improve the strength of the concrete support 4 after the concrete support 4 is cast and formed, and improve the support effect on the deaerator 1.

[0028] In addition, during the docking process of the two inclined shims 33, in order to ensure the stability of the square plate 32 and the inclined shims 33 below, prevent them from shifting under force, and improve the docking stability, combined with Figure 2 and Figure 3 As shown, two positioning holes 321 are symmetrically drilled through the lower surface of the lower square plate 32. Four positioning steel bars 22 are embedded in the upper surface of the precast concrete base plate 2. When the bracket 3 is placed on the precast concrete base plate 2, the positioning steel bars 22 can penetrate through the corresponding positioning holes 321 on the lower square plate 32, thereby achieving precise positioning of the bracket 3. This positioning method can not only effectively prevent the bracket 3 from shifting during the docking process, but also make the docking process more accurate and efficient, reduce installation errors caused by positional deviations, and improve the stability and reliability of the overall structure.

[0029] Deaerator installation method:

[0030] Before installing the deaerator 1, preparatory work needs to be carried out, specifically by welding inclined shims 33 onto the square plates 32 at the top of each bracket 3, laying the foundation for subsequent installation.

[0031] When installing deaerator 1, it is first hoisted using an external chain hoist and wire rope, utilizing the concrete slab above the deaerator chamber. Next, two inclined shims 33 are installed at designated positions on the lower surface of the base 11 of deaerator 1. Then, prefabrication of the precast concrete base slabs 2 is carried out on the ground below the two bases 11 of deaerator 1. During prefabrication, multiple embedded steel bars 21 and four positioning steel bars 22 are vertically embedded in a rectangular arrangement within the precast concrete base slabs 2. After the precast concrete base slabs 2 have solidified, two brackets 3 are accurately placed on each precast concrete base slab 2 using the positioning steel bars 22, ensuring the brackets 3 are positioned below the base 11 of deaerator 1.

[0032] Subsequently, the bottom surface of the base 11 of the deaerator 1 is leveled by using a chain hoist to suspend the steel wire rope, ensuring that its axis conforms to the requirements of the drawing. At this time, the inclined shims 33 on the base 11 are tightly fitted with the inclined shims 33 on the bracket 3, and the two corresponding inclined shims 33 are welded together, thereby achieving a firm fixation between the bracket 3 and the base 11.

[0033] Next, the construction of the concrete support 4 will proceed. First, parallel welding of the extended reinforcing bars 23 to the outer surface of the pre-embedded reinforcing bars 21 will be carried out. Then, multiple reinforcing bars 24 will be arranged crosswise between the extended reinforcing bars 23, and the extended reinforcing bars 23 and reinforcing bars 24 will be fixed by welding or binding to form a grid-like skeleton. Afterward, concrete formwork will be installed around the grid-like skeleton, and the concrete support 4 will be poured. The pouring height must be sufficient to embed the lower surface of the base 11 into the concrete support 4. After the concrete support 4 has solidified, the concrete formwork around it will be removed, thus completing the installation of the deaerator 1.

[0034] By employing the above installation method, and by setting up bracket 3 and inclined shims 33, the axis and elevation of deaerator 1 can be quickly and accurately determined during installation, effectively improving installation efficiency. At the same time, this installation method ensures that the deaerator 1 has good stability after installation.

Claims

1. A rigidly welded support for the construction of a post-deaerator foundation, comprising a deaerator (1) with two bases (11) at the bottom and two prefabricated concrete slabs (2), characterized in that: Each of the precast concrete base plates (2) is provided with a concrete support (4), and each of the concrete support plates (4) is provided with two brackets (3). Before the concrete support plates (4) are poured, the brackets (3) are placed on the precast concrete base plates (2) in advance, and the brackets (3) are fixedly connected to the corresponding bases (11).

2. The rigidly welded support for post-construction of a foundation behind an oxygen remover according to claim 1, characterized in that: The bracket (3) includes two channel steels (31), which are welded together back to back, and square plates (32) are welded and fixed on the upper and lower surfaces of the channel steels (31).

3. The rigidly welded support for post-construction of a foundation behind an oxygen remover according to claim 2, characterized in that: An inclined shim (33) is welded and fixedly installed on the upper surface of the square plate (32) and the lower surface of the base (11). The inclined surfaces of the two inclined shims (33) are fitted together to form a complete cuboid structure, and the two inclined shims (33) are welded and fixed together.

4. The rigidly welded support for post-construction foundation of deaerator according to claim 2, characterized in that: The precast concrete base slab (2) is provided with a plurality of embedded steel bars (21), which are arranged in a rectangular pattern.

5. The rigidly welded support for post-construction of a foundation behind an oxygen remover according to claim 4, characterized in that: The lower surface of the square plate (32) at the lower end has two symmetrically through-holes (321). The upper surface of the precast concrete base plate (2) is pre-embedded with four positioning steel bars (22). The positioning steel bars (22) pass through the corresponding positioning holes (321) to position the bracket (3).

6. The rigidly welded support for post-construction foundation of deaerator according to claim 4, characterized in that: The concrete support (4) is provided with multiple extended steel bars (23) and multiple reinforcing bars (24). The extended steel bars (23) are fixedly connected to the corresponding pre-embedded steel bars (21). The extended steel bars (23) and the reinforcing bars (24) are arranged in a spatial cross pattern. The extended steel bars (23) are fixedly connected to the adjacent reinforcing bars (24) to form a grid-like skeleton.

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