Building foundation anti-seismic structure

Abstract

The utility model belongs to the technical field of building structures, and particularly relates to a building foundation anti-seismic structure which comprises a pile column, and a plurality of U-shaped gaps are formed in the periphery of the pile column to form a bent piece. The plurality of extrusion blocks are triangular and are arranged on the inner sides of the bending sheets in a one-to-one correspondence manner; the supporting table is arranged at the cavity bottom of the hollow cavity and matched with the hollow cavity; the multiple insertion rods are arranged at intervals, vertically arranged at the bottom of the supporting table, penetrate out of the cavity bottom of the hollow cavity and are inserted into foundation soil; the reinforcing steel bars are vertically mounted at the top of the supporting table and upwards extend out of the hollow cavity; and the hollow cavity is filled with the concrete. On the premise of ensuring the construction convenience, the friction resistance and the occlusion effect of a pile-soil interface are enhanced, the transverse shear resistance and the pulling resistance of the pile are improved, the overall stability is ensured, and effective dispersion of earthquake energy is realized, so that the stability of the structure is improved, and the earthquake resistance is improved.

Description

Technical Field

[0001] This utility model belongs to the field of building structure technology, specifically relating to a seismic-resistant structure for building foundations. Background Technology

[0002] In structural engineering, piles serve as the core force-transmitting components between a building and its foundation, and their stability directly determines the overall seismic performance and long-term safety of the structure. Currently, most widely used piles are cylindrical structures, vertically inserted into the foundation soil to bear vertical loads. However, these traditional piles have significant drawbacks under extreme load conditions such as earthquakes: when an earthquake induces lateral forces, the contact area between the pile and the surrounding soil is limited, and the high smoothness of the pile surface leads to insufficient frictional resistance and interlocking at the pile-soil interface. Under these conditions, the pile is susceptible to lateral displacement, tilting, or even pull-out due to horizontal shear forces, severely weakening the overall stability of the structure.

[0003] While existing technologies attempt to improve bearing capacity by increasing pile diameter or using expanded-base piles, these methods primarily optimize vertical loads and have limited effect on improving lateral shear resistance. Although some modified pile types (such as threaded piles and irregularly shaped cross-section piles) can increase surface roughness, their construction is complex and significantly increases costs, hindering large-scale application. Therefore, effectively improving the lateral shear and pull-out resistance of piles while ensuring ease of construction remains a pressing technical challenge in this field. Utility Model Content

[0004] The purpose of this utility model is to provide a seismic-resistant foundation structure for buildings, which solves the technical problem that existing technologies cannot effectively improve the lateral shear resistance and pull-out resistance of piles while ensuring ease of construction.

[0005] This utility model discloses a seismic-resistant structure for building foundations, comprising:

[0006] The pile has a hollow cavity with an opening at the top and is vertically inserted into the foundation soil. Multiple U-shaped gaps are opened on the outer perimeter to form a bent plate.

[0007] Multiple extrusion blocks, arranged in a triangular shape, are positioned one-to-one on the inner side of the bending sheet;

[0008] A support platform is arranged at the bottom of the hollow cavity and is adapted to the hollow cavity;

[0009] Multiple insert rods are arranged at intervals and vertically installed at the bottom of the support platform, and extend out of the bottom of the hollow cavity and are inserted into the foundation soil;

[0010] Multiple steel bars are vertically installed on the top of the support platform and extend upwards out of the hollow cavity.

[0011] Concrete is used to fill the hollow cavity.

[0012] This application enhances the frictional resistance and interlocking effect of the pile-soil interface while ensuring ease of construction, effectively improving the lateral shear resistance and pull-out performance of the pile column, ensuring the overall stability of the structure, and through the synergistic effect between various components, effectively dispersing seismic energy, thereby improving the structural stability and seismic resistance.

[0013] Based on the above technical solution, the solution of this application can be further improved as follows:

[0014] Preferably, the U-shaped gaps are distributed in multiple sets along the axial direction of the pile column, and each set of the U-shaped gaps has multiple gaps that are evenly spaced around the axial direction of the pile column. This solution helps to optimize the stress distribution inside the pile column, so that the stress can be more evenly distributed in various parts of the pile column, reducing the risk of local stress concentration, thereby improving the overall structural strength.

[0015] Preferably, the outer periphery of the pile column is provided with multiple bending transverse grooves that correspond one-to-one with the U-shaped gaps; by adopting this solution, the bending piece can bend and deform more easily at the appropriate position, thereby reducing the construction difficulty and ensuring the construction effect.

[0016] Preferably, it further includes:

[0017] The reinforcing rod is arranged vertically and positioned at the center of the top of the support platform; this design improves the firmness of the bond with the concrete.

[0018] Preferably, the multiple steel bars are arranged in a circle around the axis of the support platform; this design facilitates connection with the building and improves stability.

[0019] Preferably, it further includes:

[0020] Multiple collars are fitted around the outer periphery of multiple reinforcing bars and arranged at intervals. This solution connects the various reinforcing bars, thereby dispersing stress and enhancing the overall structural strength.

[0021] Preferably, it further includes:

[0022] Multiple threaded sleeves are provided on the top of the support platform and correspond one-to-one with the reinforcing bars and are threadedly connected. This solution facilitates the fixed connection between the reinforcing bars and the support platform, reduces construction difficulty, improves construction efficiency, and ensures the firmness of the connection.

[0023] Preferably, the top of the support platform is provided with multiple slots that are compatible with the reinforcing bars; this solution improves the firmness of the connection between the reinforcing bars and the support platform and avoids the occurrence of the reinforcing bars loosening and falling off.

[0024] Through the above technical solution, this utility model achieves the following beneficial effects:

[0025] This application places a support platform inside a hollow cavity, thereby contacting the compression block and applying force to the bending sheet, causing the bending sheet to fold outward. Reinforcing bars are then installed on top of the support platform, and concrete is poured into the hollow cavity. This design, while ensuring ease of construction, enhances the frictional resistance and interlocking effect at the pile-soil interface, effectively improving the lateral shear and pull-out resistance of the pile column, ensuring the overall stability of the structure. Furthermore, through the synergistic effect between various components, it effectively disperses seismic energy, thereby improving the structural stability and earthquake resistance. Attached Figure Description

[0026] To more clearly illustrate the specific embodiments of this utility model or the technical solutions in the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0027] Figure 1 This is a schematic diagram of the seismic-resistant structure of the building foundation according to a specific embodiment of the present utility model;

[0028] Figure 2 for Figure 1 Enlarged view of point A in the middle;

[0029] Figure 3 for Figure 1 Enlarged view of point B in the middle;

[0030] Figure 4 for Figure 1 The diagram shows the initial state of the pile column in the seismic-resistant structure of the building foundation.

[0031] Figure 5 for Figure 4 Enlarged view of point C in the middle;

[0032] Figure 6 for Figure 1 A schematic diagram of the U-shaped gap in the seismic-resistant structure of the building foundation shown;

[0033] Explanation of reference numerals in the attached figures:

[0034] 1. Pile; 11. Hollow cavity; 12. U-shaped gap; 13. Bending plate; 14. Bending transverse groove; 2. Extrusion block; 3. Support platform; 31. Slot; 4. Insert rod; 5. Reinforcing bar; 6. Concrete; 7. Reinforcing rod; 8. Collar; 9. Threaded sleeve. Detailed Implementation

[0035] The embodiments of the present invention will now be described in detail with reference to the accompanying drawings. These embodiments are merely illustrative of the present invention and should not be construed as limiting the scope of protection of the present invention.

[0036] First, it should be noted that some directional terms used in the following description to clearly illustrate the technical solution of this utility model, such as the terms "upper," "lower," "front," "rear," "vertical," "horizontal," "top," "bottom," "inner," and "outer," are all derived from the normal orientation of components in the seismic-resistant structure of building foundations. They are only used to facilitate the description of this utility model and simplify the description, and are not intended to indicate or imply that the device or component referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0037] In this application, unless otherwise expressly specified and limited, the terms "installation" and "connection" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0038] To better understand the above technical solutions, the following will provide a detailed description of the technical solutions in conjunction with the accompanying drawings and specific embodiments.

[0039] Example:

[0040] like Figures 1-6 As shown in the figure, this application discloses a seismic-resistant foundation structure for a building, which is used to bear the weight of the entire building and resist the action of various external forces. Its specific structure includes: pile column 1, multiple extrusion blocks 2, support platform 3, multiple insertion rods 4, multiple steel bars 5 and concrete 6.

[0041] The pile 1 has a hollow cavity 11 with an open top, which reduces its own weight and facilitates subsequent construction and material filling. It is vertically inserted into the foundation soil and has multiple U-shaped gaps 12 on its outer periphery to form a bending plate 13. The bending plate 13 can produce controllable deformation when subjected to force, thereby folding outward of the pile 1 to form a tooth structure, which increases the contact area between the pile 1 and the foundation soil and acts like a hook, increasing the frictional resistance and interlocking effect of the pile-soil interface, increasing the difficulty of extraction, and improving the overall seismic performance.

[0042] Multiple extrusion blocks 2 are arranged in a triangular shape and are correspondingly located on the inner side of the bending piece 13;

[0043] The support platform 3 is arranged at the bottom of the hollow cavity 11 and is adapted to the hollow cavity 11 to provide a stable support surface, which facilitates the subsequent installation of the insertion rod 4 and the reinforcing bar 5.

[0044] Multiple insert rods 4 are arranged at intervals and vertically installed at the bottom of the support platform 3. They pass through the bottom of the hollow cavity 11 and are inserted into the foundation soil. They act like "anchors" to firmly fix the support platform 3, thereby effectively preventing the support platform 3 from shaking and displacing during an earthquake.

[0045] Multiple steel bars 5 are vertically installed on the top of the support platform 3 and extend upwards to the outside of the hollow cavity 11. They provide reliable skeleton support for the subsequent pouring of concrete 6 and provide connection points for the construction of the superstructure.

[0046] Concrete 6 is filled into the hollow cavity 11 and is tightly integrated with the extrusion block 2, bending piece 13, steel bar 5, and support platform 3 to form a solid whole. This not only improves the compressive strength and seismic performance, but also makes the entire seismic structure more stable and reliable.

[0047] The above technical solution is constructed as follows:

[0048] First, as Figure 4 The pile 1 shown is vertically inserted into the foundation soil. Then, the support platform 3 is placed inside the hollow cavity 11 and pushed downward by the equipment until it falls to the bottom of the cavity. The insertion rod 4 passes through the through hole at the bottom of the hollow cavity 11 and is inserted into the foundation soil to play an anchoring role. During this process, the support platform 3 comes into contact with the extrusion block 2, thereby applying a force to the bending piece 13 through the extrusion block 2. This causes the bending piece 13 to fold outward and push away part of the foundation soil next to the pile 1 until the extrusion block 2 no longer obstructs the descent of the support platform 3. Then, the reinforcing bar 5 is installed on the top of the support platform 3, and finally, concrete 6 is poured into the hollow cavity 11.

[0049] It should be noted that, as Figure 2As shown, after the bent piece 13 is folded outward, its top remains connected to the pile 1, thus playing a shielding role and preventing the foundation soil at the top from falling down and filling the space squeezed out by the bent piece 13, thereby reserving space for the subsequent filling of concrete 6.

[0050] It should be noted that, as Figure 1 , Figure 2 and Figure 6 As shown, after the concrete 6 is poured, the concrete 6 will fill the space squeezed out by the outward folding of the bending piece 13, thereby providing stable support for the bending piece 13 and embedding and covering the extrusion block 2, thus significantly improving the firmness of the connection with the pile column 1.

[0051] Through the above-mentioned design, this utility model can enhance the frictional resistance and interlocking effect of the pile-soil interface while ensuring convenient construction. This effectively improves the lateral shear resistance and pull-out resistance of the pile column 1, ensuring the overall stability of the structure. Furthermore, through the synergistic effect between various components, it achieves effective dispersion of seismic energy, thereby improving the structural stability and seismic resistance.

[0052] In some embodiments, multiple sets of U-shaped gaps 12 are distributed along the axial direction of the pile column 1, and each set of U-shaped gaps 12 has multiple gaps and is evenly spaced around the axis of the pile column 1.

[0053] The above settings help optimize the stress distribution inside pile 1, allowing the stress to be distributed more evenly in all parts of pile 1, reducing the risk of local stress concentration, and thus improving the overall structural strength.

[0054] In some embodiments, such as Figure 5 As shown, multiple bending transverse grooves 14 corresponding to the U-shaped gaps 12 are provided on the outer periphery of the pile column 1.

[0055] The above settings make it easier for the bending piece 13 to bend and deform at the appropriate position, thereby reducing the difficulty of construction and ensuring the construction effect.

[0056] In some embodiments, such as Figure 1 As shown, it also includes: a reinforcing rod 7, which is arranged vertically and located at the top center of the support platform 3, to further improve the firmness of the bond with the concrete 6.

[0057] In some embodiments, multiple reinforcing bars 5 are arranged in a circular pattern around the axis of the support platform 3, which facilitates connection with the building and improves stability.

[0058] Based on the above embodiments, it also includes: a plurality of collars 8, which are sleeved on the outer periphery of a plurality of reinforcing bars 5 and arranged at intervals above and below; used to connect each reinforcing bar 5, thereby dispersing stress and enhancing the overall structural strength.

[0059] In some embodiments, such as Figure 3 As shown, it also includes: multiple threaded sleeves 9, which are located on the top of the support platform 3 and correspond one-to-one with the reinforcing bars 5 and are threadedly connected.

[0060] By setting the threaded sleeve 9, it is easy to fix the steel bar 5 and the support platform 3, which reduces the construction difficulty, improves the construction efficiency, and ensures the connection is firm.

[0061] Based on the above embodiments, such as Figure 3 As shown, the top of the support platform 3 is provided with multiple slots 31 that are compatible with the reinforcing bars 5, which improves the firmness of the connection between the reinforcing bars 5 and the support platform 3 and prevents the reinforcing bars 5 from loosening and falling off.

[0062] Numerous specific details are set forth in this specification. However, it will be understood that embodiments of this invention may be practiced without these specific details. In some instances, well-known methods, structures, and techniques have not been shown in detail so as not to obscure the understanding of this specification.

[0063] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. Moreover, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this specification, as well as the features of different embodiments or examples.

[0064] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model, and not to limit it. Although the 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 or all of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this utility model, and they should all be covered within the scope of the claims and specification of this utility model.

Claims

1. A seismic-resistant structure for building foundations, characterized in that, include: The pile has a hollow cavity with an opening at the top and is vertically inserted into the foundation soil. Multiple U-shaped gaps are opened on the outer perimeter to form a bent plate. Multiple extrusion blocks, arranged in a triangular shape, are positioned one-to-one on the inner side of the bending sheet; A support platform is arranged at the bottom of the hollow cavity and is adapted to the hollow cavity; Multiple insert rods are arranged at intervals and vertically installed at the bottom of the support platform, and extend out of the bottom of the hollow cavity and are inserted into the foundation soil; Multiple steel bars are vertically installed on the top of the support platform and extend upwards out of the hollow cavity. Concrete is used to fill the hollow cavity.

2. The seismic-resistant building foundation structure according to claim 1, characterized in that, The U-shaped gaps are distributed in multiple groups along the axial direction of the pile column, and each group of U-shaped gaps has multiple gaps that are evenly spaced around the axis of the pile column.

3. The seismic-resistant foundation structure according to claim 1, characterized in that, The outer periphery of the pile is provided with multiple bending transverse grooves that correspond one-to-one with the U-shaped gaps.

4. The seismic-resistant building foundation structure according to claim 1, characterized in that, Also includes: The reinforcing rod is arranged vertically and located at the center of the top of the support platform.

5. The seismic-resistant foundation structure according to claim 1, characterized in that, The multiple steel bars are arranged in a circle around the axis of the support platform.

6. The seismic-resistant structure of building foundation according to claim 5, characterized in that, Also includes: Multiple collars are fitted around the outer periphery of multiple reinforcing bars and are arranged at intervals above and below.

7. The seismic-resistant foundation structure according to claim 1, characterized in that, Also includes: Multiple threaded sleeves are provided on the top of the support platform and are threadedly connected to each of the reinforcing bars.

8. The seismic-resistant foundation structure according to claim 7, characterized in that, The top of the support platform is provided with multiple slots that are compatible with the reinforcing bars.

Images