A self-standing steel chimney column foot structure and a steel chimney
The composite structure of inner and outer ring supports solves the support problem after the self-supporting steel chimney is heightened, enabling convenient construction and low-cost renovation, and improving the stability and safety of the chimney.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- SINOSTEEL EQUIP & ENG
- Filing Date
- 2025-07-15
- Publication Date
- 2026-06-02
AI Technical Summary
Existing self-supporting steel chimneys are difficult to support after being heightened, and reconstruction or hoisting is costly and difficult to carry out.
The structure adopts a composite structure of inner and outer ring supports. The inner ring supports consist of a first foundation layer and a boot beam with reinforcing ribs. The outer ring supports consist of a second foundation layer and anchors. The anchors are fixedly connected to the reinforcing ribs to form a stable column base structure.
It facilitates the construction or renovation process, reduces construction costs, improves the stability and safety of the chimney, and adapts to the support requirements after the chimney is heightened.
Smart Images
Figure CN224314703U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the technical field of steel chimney equipment, and in particular to a self-supporting steel chimney column base structure and a steel chimney. Background Technology
[0002] With increasingly stringent environmental standards, the requirements for exhaust emissions in industrial production processes are becoming more and more stringent. Existing steel chimneys cannot meet the requirements for ultra-low emissions, and rebuilding steel chimneys would incur high production costs. Therefore, the chimney body is heightened and exhaust gas treatment steps are added. However, for self-supporting steel chimneys, the body is only supported by the rigid structure of the column base, which is insufficient to support the heightened body. Lifting the existing chimney off the ground and rebuilding a foundation with higher strength would require large hoisting equipment and a large construction space, making the operation difficult and the construction cost high.
[0003] Therefore, how to provide a self-supporting steel chimney that can be easily produced and modified is a technical problem that urgently needs to be solved by those skilled in the art. Utility Model Content
[0004] In view of this, the purpose of this utility model is to provide a self-supporting steel chimney column base structure, which can be easily manufactured or modified at low cost on the basis of the original.
[0005] Another objective of this invention is to provide a steel chimney that includes the aforementioned self-supporting steel chimney base structure.
[0006] To achieve the above objectives, this utility model provides the following technical solution:
[0007] A self-supporting steel chimney column base structure, comprising:
[0008] The inner ring support and the outer ring support, wherein the inner ring support includes a first base layer and a boot beam that supports the chimney body based on the first base layer, and the boot beam is provided with multiple reinforcing ribs;
[0009] The outer ring support includes a second base layer surrounding the outer periphery of the first base layer, and an anchor. The first end of the anchor is fixed inside the second base layer, and the second end of the anchor is fixedly connected to the reinforcing rib.
[0010] Preferably, in the above-mentioned self-supporting steel chimney column base structure, the anchors are provided in a one-to-one correspondence with the reinforcing ribs.
[0011] Preferably, in the above-mentioned self-supporting steel chimney column base structure, the second end of the anchor is provided with an installation groove, the anchor is inserted into the reinforcing rib through the installation groove, and is fully welded to the periphery of the reinforcing rib.
[0012] Preferably, in the above-mentioned self-supporting steel chimney column base structure, each of the reinforcing ribs is provided with two anchors, the two anchors are symmetrically arranged about the reinforcing ribs, and are welded and fixed to the opposite sides of the reinforcing ribs.
[0013] Preferably, in the above-mentioned self-supporting steel chimney column base structure, the anchor is inclined and forms an angle of 45°-50° with the horizontal direction.
[0014] Preferably, in the above-mentioned self-supporting steel chimney column base structure, the second foundation layer is cast in place, and the anchor is pre-embedded in the second foundation layer.
[0015] Preferably, in the above-described self-supporting steel chimney column base structure, the second base layer covers the entire area of the side surface of the first base layer and at least a portion of the top surface.
[0016] Preferably, in the above-mentioned self-supporting steel chimney column base structure, the anchors and the reinforcing ribs are uniformly arranged along the circumference of the cylinder.
[0017] Preferably, in the above-mentioned self-supporting steel chimney column base structure, the anchor is an H-beam, a double angle steel, or a double channel steel.
[0018] A steel chimney, comprising a self-supporting steel chimney support structure as described in any of the preceding claims.
[0019] As can be seen from the above technical solution, the self-supporting steel chimney column base structure provided by this utility model mainly includes an inner ring support and an outer ring support to form a two-layer composite support structure in the radial direction of the chimney body. Specifically, the inner ring support includes a first foundation layer and a boot beam that supports the chimney body based on the first foundation layer. In order to improve the support stability of the inner ring support, multiple reinforcing ribs are provided on the boot beam to improve the support strength of the inner ring support. The outer ring support is set around the inner ring support. It should be noted that for newly built self-supporting steel chimneys, the inner ring support can be newly set, while for self-supporting steel chimneys that need to be heightened, the original support foundation can be used as the inner ring support for column base structure modification. The outer ring support consists of a second base layer and anchors. The second base layer surrounds the outer perimeter of the first base layer, while the first end of the anchor is fixed inside the second base layer, and the second end is fixedly connected to the reinforcing rib. The outer ring support expands and strengthens the first base layer through its second base layer. The anchors provide support for the reinforcing rib based on the second base layer. The synchronous action of the anchors and the reinforcing rib enables the shoe beam to have a stronger supporting effect. The construction or renovation process is convenient and can meet the stable support requirements for increasing the height of the chimney. Attached Figure Description
[0020] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.
[0021] Figure 1 A top view of the self-supporting steel chimney column base structure provided in this embodiment of the utility model;
[0022] Figure 2 This is a schematic diagram of the cross-sectional structure of a self-supporting steel chimney column base.
[0023] in:
[0024] 10-Inner ring support; 110-First foundation layer; 120-Shoe beam; 130-Reinforcing rib; 20-Outer ring support; 210-Second foundation layer; 220-Anchor; 30-Cylinder body. Detailed Implementation
[0025] The core of this utility model lies in disclosing a self-supporting steel chimney column base structure, which can be easily manufactured or modified at low cost on the basis of the original.
[0026] Another objective of this invention is to provide a steel chimney that includes the aforementioned self-supporting steel chimney base structure.
[0027] To enable those skilled in the art to better understand the present invention, embodiments of the present invention will be described below with reference to the accompanying drawings. Furthermore, the embodiments shown below do not limit the scope of the invention as described in the claims. Additionally, the complete contents of the configurations shown in the following embodiments are not limited to those necessary for the solution of the invention as described in the claims.
[0028] like Figure 1 and Figure 2 As shown, this embodiment of the disclosure provides a self-supporting steel chimney column base structure, which achieves stable support for the chimney column base through the synergistic action of the inner ring support 10 and the outer ring support 20. Specifically, the inner ring support 10 consists of a first foundation layer 110 and a boot beam 120, wherein the first foundation layer 110 serves as the foundation of the entire structure, bearing the weight of the chimney cylinder 30 and distributing it evenly to the ground. The boot beam 120 supports the chimney cylinder 30 based on the first foundation layer 110, and is provided with multiple reinforcing ribs 130, effectively enhancing the bending and shear resistance of the boot beam 120, thereby improving the supporting effect of the inner ring support 10 on the chimney.
[0029] It should be noted that for newly built self-supporting steel chimneys, the inner ring support 10 can be newly installed. However, for self-supporting steel chimneys that need to be heightened, the existing support foundation can be used as the inner ring support 10 for column base structure modification. That is, for self-supporting steel chimneys that need to be heightened, steel wire ropes can be used to diagonally stabilize the chimney to provide temporary support. The soil around the existing chimney foundation should be removed to reveal the current inner ring support 10 of the chimney, and the outer ring support 20 should be installed on the basis of the existing inner ring support 10.
[0030] Based on the above embodiments, the outer ring support 20 includes a second base layer 210 and anchors 220 arranged around the outer periphery of the first base layer 110. The second base layer 210 is used to expand the first base layer 110 so that the column base structure can adapt to the support requirements of larger chimneys. At the same time, the second base layer 210 provides an installation base for the anchors 220. Specifically, the first end of the anchor 220 is fixed inside the second base layer 210, and the second end of the anchor 220 is fixedly connected to the reinforcing rib 130, so that a tight connection system is formed between the inner ring support 10 and the outer ring support 20. The anchors 220 transmit the supporting force of the outer ring to the reinforcing rib 130 of the inner ring, thereby achieving the overall stability of the chimney column base.
[0031] The above structure, with its layered structure of inner ring support 10 and outer ring support 20, not only provides clear steps during the construction process, but also allows for the maintenance and heightening of the steel chimney body 30 by simply using the existing column base as the inner ring support 10 and adding the outer ring support 20. This facilitates the modification process and meets the support requirements of the taller chimney body 30.
[0032] In some embodiments of this disclosure, the anchor 220 and the reinforcing rib 130 can be configured in a one-to-one correspondence. Specifically, each reinforcing rib 130 is provided with an anchor 220. The first end of the anchor 220 is fixed in the second base layer 210 of the outer ring support 20, and the second end is fixedly connected to the reinforcing rib 130. The one-to-one correspondence structure allows each reinforcing rib 130 to be tightly connected to the outer ring support 20 through the anchor 220, which can uniformly reinforce the reinforcing rib 130 in the circumferential direction of the chimney, thereby enhancing the stability of the entire column base structure.
[0033] Based on the above embodiments, in order to improve the connection stability between the anchor 220 and the reinforcing rib 130, an installation groove is provided at the second end of the anchor 220, so that the anchor 220 can be inserted into the reinforcing rib 130 through the installation groove and fully welded to the reinforcing rib 130 around its perimeter. The installation groove allows the anchor 220 and the reinforcing rib 130 to fit tightly together, increases the contact area between the anchor 220 and the reinforcing rib 130, and provides a larger welding space. The full welding around the perimeter further enhances the connection strength, effectively preventing safety hazards caused by loose connection and improving the stability of the chimney column base.
[0034] In other embodiments of this disclosure, each reinforcing rib 130 may also be provided with two anchors 220 to enhance the supporting effect of the anchors 220 on the reinforcing rib 130. Specifically, the two anchors 220 are symmetrically arranged about the reinforcing rib 130 and welded to the opposite sides of the reinforcing rib 130. The symmetrically arranged anchors 220 can ensure that the reinforcing rib 130 can evenly distribute the load when under stress, avoiding deformation or damage caused by excessive local stress. At the same time, the two anchors 220 can also increase the load-bearing effect, improve the bending and shear resistance of the reinforcing rib 130, and effectively improve the overall stability of the chimney column base, ensuring the safe operation of the chimney.
[0035] Furthermore, in order to improve the tensile strength of the anchor 220, in the self-supporting steel chimney column base structure provided in this embodiment, the anchor 220 is inclined, forming an angle of 45°-50° with the horizontal direction. The inclined anchor 220 can transfer the force along its inclined direction to the second foundation layer 210 of the outer ring support 20, thereby reducing the local stress on the chimney column base. Moreover, the inclined anchor 220 can also enhance the overturning resistance of the chimney column base. For chimneys with greater height, their column base structure needs to withstand greater wind loads and seismic loads. By inclining the anchor 220, it can be ensured that the chimney column base remains stable under complex loads.
[0036] Furthermore, to reduce the construction difficulty of the outer ring support 20, in some embodiments of this disclosure, the second base layer 210 is cast in a molded manner, which ensures the density and uniformity of its structure and can adapt to the complex structure of the first base layer 110, thus satisfying the reinforcement construction of the first base layer 110. During the casting process of the second base layer 210, anchors 220 are pre-embedded in the second base layer 210; the pre-embedded anchors 220 can be tightly integrated with the second base layer 210 during the casting process, thereby improving the installation accuracy and stability of the anchors 220, so as to enhance the structural strength of the outer ring support 20 with lower operational difficulty.
[0037] Based on the above embodiments, in order to improve the overall integrity of the entire chimney base structure, the second base layer 210 covers all areas of the side surface and at least part of the top surface of the first base layer 110, so as to tightly bond the second base layer 210 to the first base layer 110. The second base layer 210 forms a structure that surrounds and tightly engages with the first base layer 110, thereby improving the integration of the inner ring support 10 and the outer ring support 20, effectively dispersing the gravity of the chimney cylinder 30, and further enhancing the stability of the first base layer 110 through the structural strength of the second base layer 210.
[0038] Furthermore, in some embodiments of this disclosure, the anchors 220 and the reinforcing ribs 130 are uniformly arranged along the circumference of the chimney body 30 to ensure that the chimney column base can bear the same load in all directions, reduce structural deformation caused by uneven local stress, and improve the service life of the chimney column base. It should also be noted that the number of anchors 220 and reinforcing ribs 130 can be the same or different, and the two can be uniformly distributed in the circumference of the chimney body 30, or evenly distributed in an alternating manner.
[0039] Furthermore, in the self-supporting steel chimney column base structure provided in this embodiment, the anchor 220 adopts H-beams, double angle steel or double channel steel structure, which all have high strength and good bending and shear resistance, thus ensuring that the anchor 220 remains stable under various loads; and the above structure has good processing performance and installation performance, and can be easily connected with the reinforcing rib 130 and the second foundation layer 210.
[0040] Furthermore, this disclosure also provides a steel chimney, which includes the self-supporting steel chimney support structure provided in any of the above embodiments to achieve its support on the mounting surface. It should be noted that since the self-supporting steel chimney support structure has the technical effects provided in any of the above embodiments, the steel chimney also has the technical effects provided in any of the above embodiments, and will not be repeated here.
[0041] The terms "first," "second," "left side," and "right side," etc., in the specification, claims, and accompanying drawings of this application are used to distinguish different objects, not to describe a specific order. Furthermore, the terms "comprising" and "having," and any variations thereof, are intended to cover non-exclusive inclusion. For example, a process, method, system, product, or device that includes a series of steps or units may not be defined in the listed steps or units, but may include steps or units not listed.
[0042] The above description of the disclosed embodiments enables those skilled in the art to make or use this application. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of this application. Therefore, this application is not to be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.
Claims
1. A self-supporting steel chimney shaft footing structure, characterized in that, include: The inner ring support and the outer ring support, wherein the inner ring support includes a first base layer and a boot beam that supports the chimney body based on the first base layer, and the boot beam is provided with multiple reinforcing ribs; The outer ring support includes a second base layer surrounding the outer periphery of the first base layer, and an anchor. The first end of the anchor is fixed inside the second base layer, and the second end of the anchor is fixedly connected to the reinforcing rib.
2. The self-supporting steel chimney column base structure as described in claim 1, characterized in that, The anchors are provided in a one-to-one correspondence with the reinforcing ribs.
3. The self-supporting steel chimney column base structure as described in claim 2, characterized in that, The second end of the anchor has an installation groove, through which the anchor is inserted into the reinforcing rib and fully welded to the periphery of the reinforcing rib.
4. The self-supporting steel chimney column base structure as described in claim 1, characterized in that, Each reinforcing rib is provided with two anchors, which are symmetrically arranged about the reinforcing rib and welded to the opposite sides of the reinforcing rib.
5. The self-supporting steel chimney column base structure as described in claim 1, characterized in that, The anchor is inclined and forms an angle of 45°-50° with the horizontal direction.
6. The self-supporting steel chimney column base structure as described in claim 1, characterized in that, The second foundation layer is cast and formed, and the anchor is pre-embedded in the second foundation layer.
7. The self-supporting steel chimney column base structure as described in claim 6, characterized in that, The second base layer covers all areas of the sides of the first base layer and at least a portion of the top surface.
8. The self-supporting steel chimney column base structure as described in claim 1, characterized in that, Both the anchors and the reinforcing ribs are evenly arranged along the circumference of the cylinder.
9. The self-supporting steel chimney column base structure as described in claim 1, characterized in that, The anchor is an H-beam, double angle steel, or double channel steel.
10. A steel chimney, characterized in that, Including the self-supporting steel chimney column base structure as described in any one of claims 1-9.