Foundation reinforcing structure

Abstract

The utility model discloses a foundation reinforcing structure, which relates to the technical field of construction engineering and comprises a first foundation bottom plate and a second foundation bottom plate, the second foundation slab is located near the first foundation slab, the lower end face of the second foundation slab is higher than the upper end face of the first foundation slab, and the lower end face of the second foundation slab is provided with a first original foundation pile and a second original foundation pile; the second original foundation pile is closer to the first foundation bottom plate than the first original foundation pile; a supporting pier is arranged on the upper end face of the first foundation slab, and the side wall of the supporting pier is connected with the side wall of the second foundation slab. The side wall of the first foundation bottom plate is connected with a third foundation bottom plate, and the third foundation bottom plate and at least part of the second original foundation pile are poured together. According to the method, the chimney foundation can be expanded on the basis that the construction expansion chimney at the bottom of the fan foundation is not dismantled, so that the chimney foundation is effectively supported on the fan foundation bottom pile.

Description

Technical Field

[0001] The utility model relates to the technical field of construction engineering, in particular to a foundation reinforcement structure. Background Art

[0002] Chimneys in metallurgical projects need to be raised due to environmental protection requirements, which will lead to insufficient bearing capacity of the piles of the original chimney foundation. The chimney foundation is surrounded by equipment foundations, cable tunnels, pipeline supports, etc. If additional piles are to be added on site, some surrounding equipment foundations and pipeline structures must be removed, which will cause the steel mill to stop production and cause heavy losses. If the piles with excess bearing capacity of the fan foundations at the upper and lower ends are used, the bottom elevation of the fan foundation is higher than the bottom plate of the chimney foundation, which makes it difficult to expand the chimney foundation without dismantling the bottom of the fan foundation to effectively support it on the piles at the bottom of the fan foundation. This problem needs to be solved. Utility Model Content

[0003] In order to overcome the above-mentioned defects of the prior art, the technical problem to be solved by the embodiment of the utility model is to provide a foundation reinforcement structure, which can expand the chimney foundation on the basis of constructing an expanded chimney without dismantling the bottom of the fan foundation so that it can be effectively supported on the piles at the bottom of the fan foundation.

[0004] The specific technical solution of the embodiment of the utility model is:

[0005] A foundation reinforcement structure, comprising:

[0006] A first base plate extending in a horizontal direction;

[0007] a second foundation bottom plate located near the first foundation bottom plate, the lower end surface of the second foundation bottom plate being higher than the upper end surface of the first foundation bottom plate, the lower end surface of the second foundation bottom plate having first original foundation piles and second original foundation piles extending in a vertical direction; the second original foundation piles are closer to the first foundation bottom plate than the first original foundation piles;

[0008] Among them, a supporting pier is arranged on the upper end surface of the first foundation slab, and the side wall of the supporting pier is connected to the side wall of the second foundation slab; the side wall of the first foundation slab is connected to a third foundation slab extending in a horizontal direction, and the third foundation slab is cast together with at least part of the second original foundation pile.

[0009] Preferably, the supporting pier has at least two layers of steel mesh laid in a horizontal direction, and the steel mesh is welded to the steel mesh in the second foundation slab.

[0010] Preferably, a plurality of first shear steel bars are arranged at the junction of the supporting pier and the second foundation slab, and two ends of the first shear steel bars are respectively inserted into the second foundation slab and the supporting pier.

[0011] Preferably, the spacing between the steel bars in the steel mesh in the supporting pier extending toward the second foundation slab is the same as the spacing between the steel bars in the same direction in the second foundation slab.

[0012] Preferably, the steel mesh in the third foundation slab is welded together with the steel mesh in the first foundation slab.

[0013] Preferably, a plurality of second shear steel bars are arranged at the junction of the third foundation slab and the first foundation slab, and two ends of the second shear steel bars are respectively inserted into the first foundation slab and the third foundation slab.

[0014] Preferably, the strength of the concrete used to cast the third foundation slab is higher than the strength of the concrete used to cast the first foundation slab and the strength of the concrete used to cast the second original foundation piles.

[0015] Preferably, a preset thickness is cut off in the circumferential direction of the side wall of the second original foundation pile within a position range corresponding to the first foundation bottom plate; and the steel bars in the third foundation bottom plate are passed through holes drilled in the second original foundation pile.

[0016] Preferably, the concrete for pouring the third foundation slab is filled into the drilled holes on the second original foundation piles.

[0017] Preferably, the spacing between the steel bars in the steel mesh in the third foundation slab extending toward the first foundation slab is the same as the spacing between the steel bars in the first foundation slab extending in the same direction.

[0018] The technical solution of the utility model has the following significant beneficial effects:

[0019] When the third foundation slab is cast together with at least part of the second original foundation piles, the existing second original foundation piles can be used to support the third foundation slab. Since the third foundation slab is connected to the first foundation slab, the second original foundation piles will also support the first foundation slab, thereby achieving the purpose of reinforcing the first foundation slab. At the same time, due to the existence of the newly built support piers, the third foundation slab and the second original foundation piles can be cast while the equipment on the upper part of the second foundation slab is running, thus ensuring that the reinforcement construction work of the first foundation slab is completed without stopping the equipment on the upper part of the first foundation slab and the second foundation slab.

[0020] With reference to the following description and drawings, specific embodiments of the present invention are disclosed in detail, indicating the manner in which the principles of the present invention can be adopted. It should be understood that the embodiments of the present invention are not limited in scope. Features described and / or shown for one embodiment can be used in one or more other embodiments in the same or similar manner, combined with features in other embodiments, or replace features in other embodiments. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] The drawings described herein are only for explanation purposes and are not intended to limit the scope of the present invention in any way. In addition, the shapes and proportional dimensions of the components in the drawings are only for illustration purposes to help understand the present invention, and are not intended to specifically limit the shapes and proportional dimensions of the components of the present invention. Under the guidance of the present invention, those skilled in the art can select various possible shapes and proportional dimensions to implement the present invention according to specific circumstances.

[0022] Figure 1 It is a schematic diagram of the plane layout of the foundation reinforcement structure in the embodiment of the utility model;

[0023] Figure 2 It is a cross-sectional schematic diagram of the foundation reinforcement structure in the embodiment of the utility model;

[0024] Figure 3 It is a cross-sectional view of the connection between the second original foundation pile and the third foundation bottom plate in the embodiment of the utility model.

[0025] Reference numerals in the above drawings:

[0026] 1. First foundation slab; 2. Second foundation slab; 21. First original foundation pile; 22. Second original foundation pile; 221. Drill hole; 3. Support pier; 4. Third foundation slab; 41. Steel bars in the third foundation slab; 5. First shear steel bars; 6. Second shear steel bars. DETAILED DESCRIPTION

[0027] In combination with the accompanying drawings and the description of the specific embodiments of the present invention, the details of the present invention can be more clearly understood. However, the specific embodiments of the present invention described herein are only used to explain the purpose of the present invention and cannot be understood as limiting the present invention in any way. Under the guidance of the present invention, technicians can conceive of any possible variations based on the present invention, which should be regarded as belonging to the scope of the present invention. It should be noted that when an element is referred to as "disposed on" another element, it can be directly on the other element or there can also be a central element. When an element is considered to be "connected" to another element, it can be directly connected to the other element or there may be a central element at the same time. The terms "installed", "connected" and "connected" should be understood in a broad sense, for example, it can be a mechanical connection or an electrical connection, or it can be the internal communication of two elements, it can be directly connected, or it can be indirectly connected through an intermediate medium. For ordinary technicians in this field, the specific meanings of the above terms can be understood according to the specific circumstances. The terms "vertical", "horizontal", "up", "down", "left", "right" and similar expressions used herein are only for illustrative purposes and do not represent the only implementation method.

[0028] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those generally understood by those skilled in the art to which this application belongs. The terms used herein in the specification of this application are only for the purpose of describing specific embodiments and are not intended to limit this application. The term "and / or" used herein includes any and all combinations of one or more related listed items.

[0029] In order to expand the chimney foundation without dismantling the bottom of the wind turbine foundation and constructing an expanded chimney so that it can be effectively supported on the piles at the bottom of the wind turbine foundation, a foundation reinforcement structure is proposed in this application. Figure 1 This is a schematic diagram of the plane layout of the foundation reinforcement structure in the embodiment of the utility model. Figure 2 This is a cross-sectional schematic diagram of the foundation reinforcement structure in the embodiment of the utility model. Figure 3 FIG. 2 is a cross-sectional view of the connection between the second original foundation pile 22 and the third foundation bottom plate 4 in the embodiment of the utility model. Figures 1 to 3 As shown, the foundation reinforcement structure may include: a first foundation slab 1, a second foundation slab 2, a support pier 3 and a third foundation slab 4. The lower end surface of the second foundation slab 2 has a first original foundation pile 21 and a second original foundation pile 22 extending in the vertical direction.

[0030] Among them, Figure 1 to Figure 2As shown, the first foundation slab 1 extends in the horizontal direction. The first foundation slab 1 is a foundation slab that needs to be extended. For example, the first foundation slab 1 can be used as a foundation slab for a chimney. The lower end surface of the first foundation slab 1 has a first foundation support pile extending vertically downward. The upper end surface of the first foundation slab 1 can have a side wall structure of a chimney, and the foundation slab of the chimney supports the side wall structure of the chimney.

[0031] like Figure 1 to Figure 2 As shown, the second foundation slab 2 is located near the first foundation slab 1. The lower end surface of the second foundation slab 2 is higher than the upper end surface of the first foundation slab 1. The lower end surface of the second foundation slab 2 has a first original foundation pile 21 and a second original foundation pile 22 extending in the vertical direction. The first original foundation pile 21 and the second original foundation pile 22 are foundation piles that have been built when the second foundation slab 2 was initially constructed. The second original foundation pile 22 is closer to the first foundation slab 1 than the first original foundation pile 21. The second original foundation pile 22 is located on the side of the first foundation slab 1. For example, the second foundation slab 2 can be used as the foundation slab of a fan. The fan is used in conjunction with a chimney for blowing. The second foundation slab 2 can be multiple, and the multiple second foundation slabs 2 surround the first foundation slab 1.

[0032] like Figure 1 to Figure 2 As shown, a support pier 3 is provided on the upper end surface of the first foundation slab 1. The support pier 3 is a newly expanded support pier 3 for reinforcing the first foundation slab 1. The upper end surface of the first foundation slab 1 supports the support pier 3. The side wall of the support pier 3 is connected to the side wall of the second foundation slab 2. After the support pier 3 is constructed, the support pier 3 is used in conjunction with the first original foundation pile 21 to support the second foundation slab 2.

[0033] like Figure 1 to Figure 2 As shown, the side wall of the first foundation slab 1 is connected with a third foundation slab 4 extending in the horizontal direction. The third foundation slab 4 is cast together with at least part of the second original foundation pile 22. The third foundation slab 4 is a newly expanded foundation slab for reinforcing the first foundation slab 1. When the third foundation slab 4 is cast together with at least part of the second original foundation pile 22, the existing second original foundation pile 22 can be used to support the third foundation slab 4. Since the third foundation slab 4 is connected to the first foundation slab 1, the second original foundation pile 22 will also support the first foundation slab 1, thereby achieving the purpose of reinforcing the first foundation slab 1. At the same time, due to the presence of the newly built support pier 3, the third foundation slab 4 and the second original foundation pile 22 can be cast when the equipment on the second foundation slab 2 is running, so that the reinforcement construction of the first foundation slab 1 is completed without stopping the equipment on the first foundation slab 1 and the second foundation slab 2.

[0034] As feasible, Figure 2 As shown, the support pier 3 may have at least two layers of steel mesh laid in the horizontal direction, and the steel mesh is welded and connected to the steel mesh in the second foundation slab 2. After that, the casting of the support pier 3 is completed, so that the connection between the support pier 3 and the second foundation slab 2 can withstand a greater shear force, so that the support pier 3 can support the second foundation slab 2 more stably and firmly. As a feasible method, the spacing of the steel bars extending toward the second foundation slab 2 in the steel mesh in the support pier 3 is the same as the spacing of the steel bars in the same direction in the second foundation slab 2, so as to achieve the above-mentioned goal. As a feasible method, the steel bars extending toward the second foundation slab 2 in the steel mesh in the support pier 3 can have the same diameter as the steel bars in the same direction in the second foundation slab 2.

[0035] As feasible, Figure 2 As shown, a plurality of first shear steel bars 5 are arranged at the junction of the supporting pier 3 and the second foundation slab 2, and the two ends of the first shear steel bars 5 are respectively inserted into the second foundation slab 2 and the supporting pier 3. The first shear steel bars 5 can enable the connection between the supporting pier 3 and the second foundation slab 2 to further withstand a greater shear force. The plurality of first shear steel bars 5 can be distributed in the vertical direction, so that the connection between the supporting pier 3 and the second foundation slab 2 can further withstand a greater shear force. In order to increase the number of the first shear steel bars 5, the plurality of first shear steel bars 5 can also be distributed in the horizontal direction.

[0036] As feasible, Figure 2 As shown, the steel mesh 41 in the third foundation slab is welded to the steel mesh in the first foundation slab 1. In this way, the connection between the third foundation slab 4 and the first foundation slab 1 can withstand greater shear force, so that the third foundation slab 4 can more stably and firmly support the first foundation slab 1. Similarly, the third foundation slab 4 can have at least two layers of steel mesh laid in the horizontal direction, so as to increase the shear strength of the third foundation slab 4.

[0037] As feasible, the spacing of the steel bars extending toward the first foundation slab 1 in the steel bar mesh 41 in the third foundation slab is the same as the spacing of the steel bars in the same direction in the first foundation slab 1. As feasible, the diameter of the steel bars extending toward the first foundation slab 1 in the steel bar mesh 41 in the third foundation slab is the same as the diameter of the steel bars in the same direction in the first foundation slab 1.

[0038] As feasible, Figure 2As shown, a plurality of second shear steel bars 6 are arranged at the junction of the third foundation slab 4 and the first foundation slab 1, and the two ends of the second shear steel bars 6 are respectively inserted into the first foundation slab 1 and the third foundation slab 4. The second shear steel bars 6 can enable the connection between the third foundation slab 4 and the first foundation slab 1 to further withstand a greater shear force. The plurality of second shear steel bars 6 can be distributed in the vertical direction, so that the connection between the third foundation slab 4 and the first foundation slab 1 can further withstand a greater shear force. In order to increase the number of the second shear steel bars 6, the plurality of second shear steel bars 6 can also be distributed in the horizontal direction.

[0039] As feasible, the strength of the concrete used to cast the third foundation slab 4 can be higher than the strength of the concrete used to cast the first foundation slab 1 and the strength of the concrete used to cast the second original foundation piles 22. In this way, it can be ensured that the second original foundation piles 22 can better transmit the force through the third foundation slab 4 to support the first foundation slab 1.

[0040] As feasible, Figure 2 and Figure 3 As shown, before the third foundation slab 4 is cast together with at least part of the second original foundation pile 22, in order to improve the connection strength between the third foundation slab 4 and the second original foundation pile 22 and to improve the support force of the second original foundation pile 22 on the third foundation slab 4, the side wall of the second original foundation pile 22 is cut off by a preset thickness in the circumferential direction within the position range corresponding to the first foundation slab 1, and then when the third foundation slab 4 is cast, the concrete of the third foundation slab 4 will fill the space where the side wall of the second original foundation pile 22 is cut off by the preset thickness. For example, the preset thickness can be about 100 mm, and the specific value can be determined according to the diameter of the second original foundation pile 22. The determination of the preset thickness needs to ensure that the second original foundation pile 22 still has some support force during construction, and can support the second foundation slab 2 together with the first original foundation pile 21 and the support pier 3, so as to ensure the safety of the second foundation slab 2 during the construction phase. The steel bars 41 in the third foundation slab are passed through by drilling holes 221 on the second original foundation pile 22. Through the above two measures, the third foundation slab 4 and the steel bars can be fully cast together with the second original foundation piles 22, so that the second original foundation piles 22 can effectively support the first foundation slab 1. At the same time, the second original foundation piles 22 are not separated from the second foundation slab 2, so they can still effectively support the second foundation slab 2.

[0041] As feasible, the concrete for pouring the third foundation slab 4 needs to be filled into the borehole 221 on the second original foundation pile 22 as much as possible, so as to ensure that the steel bars of the third foundation slab 4 are firmly combined with the second original foundation pile 22. In order to achieve the above purpose, the concrete for pouring the third foundation slab 4 can use fine stone concrete.

[0042] All articles and references disclosed, including patent applications and publications, are incorporated herein by reference for various purposes. The term "consisting essentially of ... " describing a combination should include determined elements, ingredients, parts or steps and other elements, ingredients, parts or steps that do not substantially affect the basic novel features of the combination. The use of the terms "comprising" or "including" to describe the combination of elements, ingredients, parts or steps here also contemplates the implementation method consisting essentially of these elements, ingredients, parts or steps. Here, by using the term "may", it is intended to illustrate that any attribute described that "may" includes is optional. Multiple elements, ingredients, parts or steps can be provided by a single integrated element, ingredient, part or step. Alternatively, a single integrated element, ingredient, part or step can be divided into separate multiple elements, ingredients, parts or steps. The disclosure "one" or "one" used to describe an element, ingredient, part or step is not said to exclude other elements, ingredients, parts or steps.

[0043] The above are only several embodiments of the present invention. Although the embodiments disclosed by the present invention are as above, the above contents are only embodiments adopted for facilitating the understanding of the present invention and are not used to limit the present invention. Any technician in the technical field to which the present invention belongs can make any modification and change in the form and details of the embodiments without departing from the spirit and scope disclosed by the present invention, but the scope of patent protection of the present invention shall still be subject to the scope defined by the attached claims.

Claims

1. A foundation reinforcement structure, characterized in that: The foundation reinforcement structure comprises: A first base plate extending in a horizontal direction; a second foundation bottom plate located near the first foundation bottom plate, the lower end surface of the second foundation bottom plate being higher than the upper end surface of the first foundation bottom plate, the lower end surface of the second foundation bottom plate having first original foundation piles and second original foundation piles extending in a vertical direction; the second original foundation piles are closer to the first foundation bottom plate than the first original foundation piles; Among them, a supporting pier is arranged on the upper end surface of the first foundation slab, and the side wall of the supporting pier is connected to the side wall of the second foundation slab; the side wall of the first foundation slab is connected to a third foundation slab extending in a horizontal direction, and the third foundation slab is cast together with at least part of the second original foundation pile.

2. The foundation reinforcement structure according to claim 1, characterized in that: The support pier has at least two layers of steel mesh laid in the horizontal direction, and the steel mesh is welded and connected to the steel mesh in the second foundation slab.

3. The foundation reinforcement structure according to claim 1, characterized in that: A plurality of first shear steel bars are arranged at the junction of the supporting pier and the second foundation slab, and two ends of the first shear steel bars are respectively inserted into the second foundation slab and the supporting pier.

4. The foundation reinforcement structure according to claim 2, characterized in that: The spacing between the steel bars in the steel mesh in the supporting pier extending toward the second foundation slab is the same as the spacing between the steel bars in the same direction in the second foundation slab.

5. The foundation reinforcement structure according to claim 1, characterized in that: The steel mesh in the third foundation slab is welded together with the steel mesh in the first foundation slab.

6. The foundation reinforcement structure according to claim 1, characterized in that: A plurality of second shear steel bars are arranged at the junction of the third foundation slab and the first foundation slab, and two ends of the second shear steel bars are respectively inserted into the first foundation slab and the third foundation slab.

7. The foundation reinforcement structure according to claim 1, characterized in that: The strength of the concrete used to cast the third foundation slab is higher than the strength of the concrete used to cast the first foundation slab and the strength of the concrete used to cast the second original foundation piles.

8. The foundation reinforcement structure according to claim 1, characterized in that: The side wall of the second original foundation pile is cut by a preset thickness in the circumferential direction within the position range corresponding to the first foundation bottom plate; the steel bars in the third foundation bottom plate are passed through holes drilled in the second original foundation pile.

9. The foundation reinforcement structure according to claim 8, characterized in that: The concrete for pouring the third foundation slab is filled into the drilled holes on the second original foundation piles.

10. The foundation reinforcement structure according to claim 5, characterized in that: The spacing between the steel bars in the steel mesh in the third foundation slab and extending toward the first foundation slab is the same as the spacing between the steel bars in the first foundation slab and extending in the same direction.

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