A foundation structure and a new building

Abstract

The utility model discloses a kind of basic structure and newly-built building, it is close to original concrete foundation, original concrete column is set, including concrete foundation, concrete foundation is close to original concrete foundation, concrete column is set on concrete foundation, isolation zone is set between original concrete foundation, original concrete column and concrete foundation, concrete column;Concrete foundation includes multiple concrete foundation strips, multiple concrete foundation strips are laterally set in original concrete foundation one side, and it is set along longitudinal direction equidistantly, foundation beam is set on concrete foundation strip, and foundation beam is close to original concrete foundation one side and set above original concrete foundation, multiple concrete columns are laterally equidistantly provided in foundation beam;It can guarantee that newly-built foundation and column are as close to original foundation and column as possible, satisfy the space requirement of newly-built building at the same time, effectively avoid that newly-built building load is conducted to original foundation, to ensure the safety and stability of original concrete structure.

Description

Technical Field

[0001] This utility model relates to the field of building foundation engineering, specifically a foundation structure and a new building. Background Technology

[0002] In the renovation and expansion of existing buildings, in order to make full use of the site space, it is often necessary to add new foundations and new concrete columns next to the original concrete foundations and columns.

[0003] To ensure the required space between columns, new foundations and columns should be placed as close as possible to the existing foundations and columns. However, if the distance between the new foundations and columns and the existing foundations and columns is too small, the contact point between the new foundation and the original concrete foundation is prone to cause stress imbalance in the original structure due to load transfer. Even if an isolation zone is set up, it is still impossible to completely avoid local stress concentration between the new foundation beam and the original foundation, making it difficult to meet the dual requirements of structural safety and space utilization. Utility Model Content

[0004] The purpose of this utility model is to provide a basic structure and a new building that can ensure that the new foundation and columns are as close as possible to the original foundation and columns, thus meeting the space requirements of the new building, while effectively preventing the load of the new building from being transmitted to the original foundation, thereby ensuring the safety and stability of the original concrete structure.

[0005] The above-mentioned optimized structure of this utility model is achieved through the following technical solution: a basic structure, which is set in close contact with the original concrete foundation and the original concrete column, including a concrete foundation, wherein the concrete foundation is in close contact with the original concrete foundation; A concrete column, wherein the concrete column is provided on the concrete foundation; A buffer zone is provided between the original concrete foundation, the original concrete column, and the concrete foundation and the concrete column; The concrete foundation includes multiple concrete foundation strips, which are arranged laterally on one side of the original concrete foundation and are equally spaced along the longitudinal direction. Multiple foundation beams are provided on the concrete foundation strips, and the foundation beams are located above the original concrete foundation on the side closest to the original concrete foundation. Multiple concrete columns are provided at equal intervals in the transverse direction on the foundation beams.

[0006] Preferably, the concrete foundation further includes connecting strips, which are vertically disposed on the side of the plurality of concrete foundation strips near the original concrete foundation; A connecting beam is provided on the connecting strip and is perpendicularly connected to the side of the multiple foundation beams near the original concrete foundation.

[0007] Preferably, the original concrete foundation includes a sub-foundation, and the foundation beam is provided above the side of the sub-foundation closest to the concrete foundation; The upper foundation is located on top of the lower foundation. Preferably, it further includes a shear-resistant component disposed between the concrete foundation strip and the foundation beam.

[0008] Preferably, the shear-resistant component includes a plurality of shear-resistant steel meshes, which are equally spaced and embedded in the concrete foundation strip and the foundation beam; Multiple shear pins are provided at equal intervals between the multiple shear reinforcement meshes.

[0009] Preferably, the shear-resistant component further includes a bracing mesh, which is obliquely positioned above the lower foundation on the side closest to the concrete foundation and connected to multiple shear-resistant steel meshes within the foundation beam.

[0010] Preferably, the insulating strip is made of polyethylene foam.

[0011] Preferably, it also includes a foundation pad layer, on which the original concrete foundation and a plurality of concrete foundation strips are provided.

[0012] A new building, including the foundation structure as described in any of the preceding items.

[0013] In summary, this utility model has the following beneficial effects: (1) By combining the concrete foundation strips and foundation beams, this utility model can ensure that the new foundation and columns are as close as possible to the original foundation and columns, and meet the space requirements of the new building, while effectively preventing the load of the new building from being transmitted to the original foundation, thereby ensuring the safety and stability of the original concrete structure.

[0014] (2) By setting up an elastic isolation strip, this utility model can realize the load isolation between the new structure and the original concrete foundation, avoid the transmission of the load of the new building to the original foundation, and ensure the safety of the original structure.

[0015] (3) This utility model can effectively improve the shear resistance of the connection between the foundation beam and the concrete foundation strip by using the shear-resistant component, and prevent cracking and settlement at the connection. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the structure of this utility model; Figure 2 This is a top view of the newly constructed foundation of this utility model; Figure 3 This is a schematic diagram of the structure of this utility model before casting.

[0017] In the diagram: 1. Original concrete foundation; 11. Substructure; 12. Superstructure; 2. Original concrete column; 3. Concrete foundation; 31. Concrete foundation strip; 32. Foundation beam; 33. Connecting strip; 34. Connecting beam; 4. Concrete column; 5. Isolation strip; 6. Shear component; 61. Shear reinforcement mesh; 62. Shear pin; 63. Diagonal bracing mesh; 7. Foundation pad. Detailed Implementation

[0018] The technical solutions of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0019] refer to Figure 1-3 A basic structure is installed in close proximity to the existing concrete foundation 1 and the existing concrete columns 2. The existing concrete foundation 1 includes a lower foundation 11 and an upper foundation 12. A foundation beam 32 is provided above the side of the lower foundation 11 closest to the concrete foundation 3, and the upper foundation 12 is located on top of the lower foundation 11. The lower foundation 11 mainly bears the loads transmitted from the superstructure and the newly constructed foundation, and transfers them to the ground. The upper foundation 12 further supports and stabilizes the superstructure, and works in conjunction with the lower foundation 11 to ensure the overall stability of the existing concrete foundation 1. The upper foundation 12 may be frustum-shaped.

[0020] A basic structure includes a concrete foundation 3, concrete columns 4, and a retaining strip 5. The original concrete foundation 1 and original concrete columns 2 are the foundation structure of the existing building. The concrete foundation 3 is set close to the original concrete foundation 1 to provide foundation support for bearing the load of the newly constructed structure. The concrete columns 4 are set on the concrete foundation 3 and can bear the vertical load of the superstructure of the new building and transfer the load to the concrete foundation 3. The retaining strip 5 is set between the original concrete foundation 1 and original concrete columns 2 and the concrete foundation 3 and concrete columns 4. It can be fixed to the top and sides of the original concrete foundation 1 and the sides of the concrete foundation 3 and original concrete columns 2 with adhesive, which can effectively isolate the load transfer between the two and avoid mutual compression between the original structure and the new structure due to deformation differences.

[0021] The concrete foundation 3 includes multiple concrete foundation strips 31 and multiple foundation beams 32. The concrete foundation strips 31 are arranged laterally on one side of the original concrete foundation 1 and at equal intervals along the longitudinal direction. This distributed arrangement enhances the foundation's uniform load-bearing capacity, providing a stable lateral support for the entire new foundation structure. The foundation beams 32 are erected on top of the concrete foundation strips 31, with the side of the foundation beams 32 closest to the original concrete foundation 1 extending above it. Utilizing the gap between the original concrete foundation 1 and the original concrete column 2, this effectively prevents the load of the new building from being transferred to the original foundation while ensuring that the concrete column 4 is as close as possible to the original concrete column 2, improving space utilization. Simultaneously, the foundation beams 32 have multiple concrete columns 4 at equal intervals along the lateral direction, ensuring that the load transmitted by the concrete column 4 is evenly distributed to the concrete foundation strips 31 through the foundation beams 32.

[0022] Preferably, the concrete foundation 3 further includes connecting strips 33 and connecting beams 34. The connecting strips 33 are fixedly disposed on the side of the multiple concrete foundation strips 31 near the original concrete foundation 1 along a direction perpendicular to the concrete foundation strips 31, which can enhance the lateral connection stability between the multiple concrete foundation strips 31. The connecting beams 34 are laid on top of the connecting strips 33 and are vertically fixedly connected to the side of the multiple foundation beams 32 near the original concrete foundation 1. The multiple foundation beams 32 are connected in series through the connecting beams 34, which further improves the connection strength and integrity of the entire concrete foundation 3, so that the entire foundation structure can work together when under stress, thereby improving the stability of the structure.

[0023] Preferably, in order to further enhance the stability and shear resistance of the foundation structure, a shear-resistant component 6 is also included. The shear-resistant component 6 is disposed at the connection between the concrete foundation strip 31 and the foundation beam 32, and can resist the shear force generated by the load transfer between the two, so as to avoid shear failure at the connection.

[0024] Preferably, the shear-resistant component 6 includes multiple shear-resistant steel meshes 61 and multiple shear-resistant pins 62. The multiple shear-resistant steel meshes 61 are embedded at equal intervals along the height direction within the concrete foundation strip 31 and the foundation beam 32. The shear-resistant steel meshes 61 can be formed by vertically welding multiple transverse bars and multiple longitudinal bars. Through its own steel reinforcement structure, the shear-resistant steel meshes 61 can effectively resist the shear force that may be generated within the concrete foundation strip 31 and the foundation beam 32, enhancing the bond strength between them. The multiple shear-resistant pins 62 are equally spaced within the multiple shear-resistant steel meshes. The reinforcing mesh 61 can be welded together for fixation. The shear pins 62 can be made of round steel with a diameter of 20mm-25mm. The length must be embedded at least 150mm into both the concrete foundation strip 31 and the foundation beam 32. When welding with the shear reinforcing mesh 61, the axis must be aligned to avoid eccentric stress. The shear pins 62 can strengthen the connection between the shear reinforcing mesh 61 and the concrete foundation strip 31 and the foundation beam 32, improve the connection strength between the concrete foundation strip 31 and the foundation beam 32, and thus improve the shear resistance synergy between the two.

[0025] Preferably, the shear-resistant component 6 further includes a diagonal bracing mesh 63, which is diagonally positioned above the lower foundation 11 on the side closest to the concrete foundation 3 and is fixedly connected to multiple shear-resistant steel meshes 61 within the foundation beam 32. Through the diagonal bracing mesh 63, the horizontal load can be effectively distributed and transferred, thereby maintaining the support strength of the foundation beam 32 while keeping the foundation beam 32 as close as possible to the original concrete foundation 1, further reducing the gap between the concrete column 4 and the original concrete column 2, and improving space utilization.

[0026] Preferably, the isolation strip 5 can be made of polyethylene foam, the thickness of which can be calculated and determined based on the deformation difference between the original structure and the new structure, typically 20mm-50mm. Polyethylene foam has good elasticity and deformation capacity, which can not only achieve physical isolation between the original structure and the new structure, but also buffer the slight deformation and compression between the two. It also possesses aging resistance and corrosion resistance, ensuring long-term stability. When the foundation structure is under stress, the polyethylene foam can absorb some energy through its own deformation, preventing the load of the new building from being directly transmitted to the original foundation, thereby ensuring the safety of the original structure.

[0027] Preferably, it also includes a foundation cushion layer 7, which can be made of C15 concrete. The foundation cushion layer 7 is laid on the surface of the foundation base layer. The original concrete foundation 1 and multiple concrete foundation strips 31 are all set on top of the foundation cushion layer 7. The foundation cushion layer 7 smooths the foundation surface, reduces the impact of uneven foundation settlement on the original structure and the new structure, and at the same time avoids the foundation from directly contacting impurities and moisture in the foundation base layer, protects the foundation structure from erosion, and improves the durability of the foundation.

[0028] A new building includes the foundation structure described in any of the above, and also includes a floor slab, walls and other superstructures located on top of the concrete column 4. The foundation structure enables a safe connection with the original building, and it is applicable to the renovation and expansion projects of residential buildings, office buildings and other civil buildings.

[0029] The specific working principle is as follows: When the new building bears the load from the superstructure, the load is first transferred to the foundation beam 32 through the concrete column 4. The foundation beam 32 then distributes the load to the concrete foundation strip 31 below, and finally the concrete foundation strip 31 transfers the load to the foundation pad 7 and the foundation. During this process, the isolation strip 5 prevents the foundation beam 32 and the concrete foundation strip 31 from directly contacting the original concrete foundation 1 and the original concrete column 2, thus avoiding the transfer of the load of the new structure to the original structure and ensuring the safety of the original structure.

[0030] The longitudinal frame formed by the connecting strip 33 and the connecting beam 34 connects multiple concrete foundation strips 31 and foundation beams 32 into a whole, so that the load borne by a single foundation strip or foundation beam is evenly transferred to adjacent components, avoiding structural damage caused by local overload; at the same time, the foundation pad 7 evenly transfers the load of the original foundation and the newly built foundation strip to the foundation, preventing local settlement of the foundation.

[0031] When the connection between the foundation beam 32 and the concrete foundation strip 31 is subjected to shear force, the shear-resistant steel mesh 61 disperses the shear force to the surrounding concrete through the mesh structure, and the shear-resistant pins 62 further enhance the shear bearing capacity of the connection and prevent shear cracks from appearing at the connection. The triangular support structure formed by the diagonal bracing mesh 63 disperses the stress in the adjacent area between the foundation beam 32 and the lower foundation 11 of the original concrete foundation 1, avoiding structural damage caused by local stress concentration.

[0032] The above embodiments are only used to illustrate the technical solutions of this utility model, and are not intended to limit it. Although this utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of this utility model.

Claims

1. A basic structure, which is set in close proximity to the original concrete foundation (1) and the original concrete column (2), including a concrete foundation (3), wherein the concrete foundation (3) is in close proximity to the original concrete foundation (1). A concrete column (4) is provided on the concrete foundation (3); An isolation zone (5) is provided between the original concrete foundation (1), the original concrete column (2), the concrete foundation (3), and the concrete column (4); Its features are: The concrete foundation (3) includes multiple concrete foundation strips (31), which are arranged laterally on one side of the original concrete foundation (1) and are equally spaced along the longitudinal direction. Multiple foundation beams (32) are provided on the concrete foundation strip (31), and the foundation beams (32) are located above the original concrete foundation (1) on the side close to the original concrete foundation (1). Multiple concrete columns (4) are provided at equal intervals in the transverse direction on the foundation beams (32).

2. The basic structure according to claim 1, characterized in that: The concrete foundation (3) also includes a connecting strip (33), which is vertically disposed on the side of the plurality of concrete foundation strips (31) near the original concrete foundation (1); A connecting beam (34) is provided on the connecting strip (33) and is perpendicularly connected to the side of the multiple foundation beams (32) near the original concrete foundation (1).

3. The basic structure according to claim 1, characterized in that: The original concrete foundation (1) includes a lower foundation (11), and the lower foundation (11) is provided with the foundation beam (32) above the side of the concrete foundation (3) near the concrete foundation (3). The upper foundation (12) is located on top of the lower foundation (11).

4. The basic structure according to claim 3, characterized in that: It also includes a shear-resistant component (6), which is disposed between the concrete foundation strip (31) and the foundation beam (32).

5. A basic structure according to claim 4, characterized in that: The shear-resistant component (6) includes multiple shear-resistant steel meshes (61), which are equally spaced and embedded in the concrete foundation strip (31) and the foundation beam (32); Multiple shear pins (62) are provided at equal intervals between multiple shear reinforcement meshes (61).

6. The basic structure according to claim 5, characterized in that: The shear-resistant component (6) also includes a bracing mesh (63), which is obliquely positioned above the upper foundation (12) on the side close to the concrete foundation (3) and connected to multiple shear-resistant steel meshes (61) within the foundation beam (32).

7. The basic structure according to claim 1, characterized in that: The isolation strip (5) is made of polyethylene foam.

8. The basic structure according to claim 1, characterized in that: It also includes a foundation pad (7), on which the original concrete foundation (1) and a plurality of concrete foundation strips (31) are provided.

9. A newly constructed building, characterized in that, Includes the infrastructure as described in any one of claims 1-8.

Images