Anchored shear resistant anti-sliding structure

Abstract

The utility model discloses a lower anchor type shear slip -resistant structure, including several along the arrangement of shear key perpendicular to horizontal force direction, shear key is buried in the foundation soil and extends along the foundation soil direction, and the upper portion of this shear key has the protruding part that extends to the foundation, and the protruding part is an entirety with the shear key, the foundation is the support layer of building, and the foundation soil is the foundation layer located below the foundation, the utility model discloses a lower anchor type shear key is set, and one or several strip shear keys perpendicular to the horizontal force direction are set to the bottom surface of shallow foundation according to certain interval, and the resistance of the foundation soil is utilized, and horizontal force is gradually dissipated layer by layer, thereby eliminating the slip risk of the foundation.

Description

Technical Field

[0001] This utility model relates to building foundation structures, specifically an anchored shear and anti-slip structure. Background Technology

[0002] In the structural system of buildings and structures, the foundation, as a key component that bears the load of the superstructure and transfers it to the soil, is directly related to the stability and safety of the entire structure. Typically, the load transferred from the superstructure to the foundation is primarily a downward vertical force, and the foundation effectively transfers this load through its interaction with the soil.

[0003] When special conditions such as earthquakes occur, the superstructure exerts horizontal forces on the foundation. In scenarios where the foundation soil has good bearing capacity, shallow foundations are often used in engineering projects. In this case, the horizontal forces generated by the earthquake can be offset by the friction between the foundation and the foundation soil, without the need for additional special structures.

[0004] However, in certain special application scenarios, even under non-earthquake conditions, the superstructure may simultaneously bear upward and horizontal loads. This combined stress state leads to two significant problems: first, the vertical downward force transmitted from the superstructure to the foundation is greatly reduced; second, the horizontal force is significantly increased. In this situation, the friction between the foundation and the subgrade soil is insufficient to completely resist the increased horizontal force. Without effective measures, relative slippage between the foundation and the subgrade soil can easily occur, and in severe cases, it can even lead to the overturning and collapse of the entire structure, posing a major safety hazard.

[0005] To address the aforementioned issues, existing technologies often employ the method of replacing shallow foundations with deep foundations to resist horizontal forces. However, this approach significantly increases construction difficulty, prolongs the construction period, and substantially raises project costs. Therefore, effectively dissipating the horizontal forces on the foundation while maintaining the shallow foundation form has become a key technical requirement for reducing project costs and ensuring structural safety, and is of great significance for promoting a balance between economic efficiency and safety in the field of building engineering. Utility Model Content

[0006] Therefore, in order to solve the above-mentioned shortcomings, this utility model provides a bottom-anchored shear and anti-slip structure. By setting bottom-anchored shear keys, one or more strip shear keys perpendicular to the direction of the horizontal force are set at certain intervals on the bottom surface of the shallow foundation. The horizontal force is dissipated layer by layer by utilizing the resistance of the foundation soil, thereby eliminating the risk of foundation slippage.

[0007] Specifically, an anchored shear-resistant and anti-slip structure includes several shear keys arranged perpendicular to the direction of the horizontal force. The shear key is embedded in the foundation soil and extends along the direction of the foundation soil. The upper part of the shear key has a protrusion that extends to the foundation. The protrusion and the shear key are integral. The foundation is the supporting layer of the building, and the foundation soil is the subgrade located below the foundation.

[0008] Optionally, the shear key includes a frame and a shear portion, the frame including a key frame portion extending into the foundation soil and a flange portion located between the foundation soil and the foundation, the flange portion extending in the direction of horizontal force. The shear-resistant portion fills the key frame portion, and the upper part of the shear-resistant portion is higher than the surface of the flange and extends to the base to form a protrusion. Preferably, the flange portions of adjacent shear-resistant keys are in contact.

[0009] Optionally, the shear-resistant portion has several reinforcing ribs inside. The reinforcing ribs are arranged along the horizontal direction of action and / or perpendicular to the horizontal direction of action.

[0010] Optionally, the frame and shear-resistant section can be prefabricated or cast in place.

[0011] This utility model has the following advantages: This utility model is a bottom-anchored shear and anti-slip structure. One or more strip shear keys perpendicular to the direction of the horizontal force are set at certain intervals on the bottom surface of the shallow foundation. By utilizing the resistance of the foundation soil, the horizontal force is dissipated layer by layer to eliminate the risk of foundation slippage.

[0012] The frame facilitates the installation or formation of shear-resistant sections, making implementation easier. The flange enables the transmission or cancellation of horizontal forces between adjacent shear keys. The protrusions inserted into the foundation strengthen the foundation structure, improve the stability of the foundation structure, and reduce the risk of internal slippage. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the anchored anti-shear and anti-slip structure described in this utility model; Figure 2 This is a schematic diagram of the shear-resistant key structure described in this utility model; In the diagram: 100, foundation; 200, foundation soil; 201, theoretical fracture surface; 300, shear key; 301, protrusion; 302, shear section; 303, frame; 3031, flange; 3032, key frame section; 304, stiffener; 305, border; 306, contact notch. Detailed Implementation

[0014] The embodiments of this application are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain this application, and should not be construed as limiting this application.

[0015] In this document, relational terms such as "first" and "second" are used merely to distinguish one entity or operation from another, without necessarily requiring or implying any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus.

[0016] As described in the background section, in certain special application scenarios, even under non-earthquake conditions, the superstructure may simultaneously bear upward and horizontal loads. This combined stress state leads to two significant problems: first, the vertical downward force transmitted from the superstructure to the foundation is greatly reduced; second, the horizontal force is significantly increased. Under these circumstances, the friction between the foundation and the subgrade soil is insufficient to completely resist the increased horizontal force. If effective measures are not taken, relative slippage between the foundation and the subgrade soil can easily occur, and in severe cases, it may even lead to the overturning and collapse of the entire structure, posing a major safety hazard.

[0017] For the reasons mentioned above, such as Figure 1 and Figure 2 As shown, this embodiment provides a bottom-anchored shear and anti-slip structure, including several shear keys 300 arranged perpendicular to the direction of the horizontal force. The shear key 300 is embedded in the foundation soil 200 and extends along the direction of the foundation soil. The upper part of the shear key 300 has a protrusion 301 extending to the foundation 100. The protrusion 301 and the shear key 300 are integral. The foundation 100 is the supporting layer of the building, and the foundation soil 200 is the subgrade located below the foundation.

[0018] The aforementioned technical feature is that one or more strip shear keys perpendicular to the direction of the horizontal force are set at certain intervals on the bottom surface of the shallow foundation. By utilizing the resistance of the foundation soil, the horizontal force is dissipated layer by layer to eliminate the risk of foundation slippage.

[0019] For example, such as Figure 2As shown, the shear key 300 includes a frame 303 and a shear portion 302. The frame 303 includes a key frame portion 3032 extending into the foundation soil 200 and a flange portion 3031 located between the foundation soil and the foundation. The flange portion 3031 extends along the direction of horizontal force, and the flange portions of adjacent shear keys are in contact with each other. A contact notch 306 is provided on one side of the flange portion to facilitate the docking of adjacent flange portions. The shear-resistant portion 302 is filled within the key frame portion 3032, and the upper part of the shear-resistant portion 302 is higher than the surface of the flange and extends to the base 100 to form a protrusion 301.

[0020] The aforementioned technical features facilitate the installation or formation of shear-resistant sections through a frame, simplifying implementation. The flange enables the leveling and positioning of adjacent shear keys. The protrusions, inserted into the foundation, strengthen the foundation structure, improving its stability and reducing the risk of internal slippage. Figure 1 As shown, the horizontal force on the shear key can be offset by the internal force at the theoretical fracture surface 201.

[0021] To improve the strength of the shear-resistant portion, in one embodiment, the shear-resistant portion has several reinforcing ribs 304 inside. The reinforcing ribs are arranged along the horizontal direction of action and / or perpendicular to the horizontal direction of action.

[0022] By arranging reinforcing ribs in the direction of horizontal force or perpendicular to the direction of horizontal force, the structural integrity of the shear-resistant part can be improved, thereby enhancing its resistance. To facilitate the fixing of the reinforcing ribs, a frame 305 is provided around the portion of the shear-resistant part located in the key frame. This frame is a concrete protective layer, or a frame made of stainless steel or corrosion-resistant steel. The reinforcing ribs are fixedly connected to the frame 305 by welding.

[0023] To implement the anti-slip mechanism, in one embodiment, the frame and shear-resistant part are prefabricated or cast in place.

[0024] The above description of the disclosed embodiments enables those skilled in the art to make or use the present invention. 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 the present invention. Therefore, the present invention 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 bottom-anchored shear-resistant and anti-slip structure, characterized in that: It includes several shear keys arranged perpendicular to the direction of the horizontal force; The shear key is embedded in the foundation soil and extends along the direction of the foundation soil. The upper part of the shear key has a protrusion that extends to the foundation. The protrusion and the shear key are integral. The foundation is the supporting layer of the building, and the foundation soil is the subgrade located below the foundation.

2. The anchored shear and anti-slip structure according to claim 1, characterized in that: The shear key includes a frame and a shear portion. The frame includes a key frame portion extending into the foundation soil and a flange portion located between the foundation soil and the foundation. The flange portion extends in the direction of horizontal force. The shear-resistant portion fills the key frame portion, and the upper part of the shear-resistant portion is higher than the surface of the flange and extends to the base to form a protrusion.

3. The anchored shear and anti-slip structure according to claim 1, characterized in that: The flanges of adjacent shear keys are in contact.

4. The anchored shear and anti-slip structure according to claim 2, characterized in that: The shear-resistant part has several reinforcing ribs inside.

5. The anchored shear and anti-slip structure according to claim 4, characterized in that: The reinforcing ribs are arranged along the horizontal direction of action and / or perpendicular to the horizontal direction of action.

6. The anchored shear and anti-slip structure according to claim 2, characterized in that: The frame and shear-resistant components are prefabricated or cast in place.

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