Compression bearing capacity detection device for compensation pile foundation

Abstract

The utility model provides a compensation pile foundation compressive bearing capacity detection device, and relates to the technical field of pile foundation bearing capacity detection, the compensation pile foundation compressive bearing capacity detection device comprises a compensation pile, a reinforcement cage, a reinforcement meter, a surface type vibrating wire strain gauge, an embedded type vibrating wire strain gauge and a platform plate, the reinforcement cage is arranged in a pile core of the compensation pile, and the reinforcement cage partially protrudes out of the top of the compensation pile; the reinforcement meter and the embedded type vibrating wire strain gauge are both arranged on the reinforcement cage, the surface type vibrating wire strain gauge is arranged on the outer side wall of the compensation pile, the platform plate is arranged at the top of the compensation pile, and the top of the reinforcement cage and the embedded type vibrating wire strain gauge are both arranged in the platform plate. The device is small in size, small in occupied site space and suitable for detecting the compressive bearing capacity of the pile foundation under the limited site condition, and the problem that an existing detection mode is difficult to implement under the limited site condition is solved.

Description

Technical Field

[0001] The utility model relates to the technical field of pile foundation bearing capacity detection, in particular to a compensating pile foundation compressive bearing capacity detection device. Background Art

[0002] In the current process of urban development, the renovation and reinforcement of old small buildings is showing an increasing trend. Over time, the original foundations of these buildings may be unable to meet the growing bearing capacity requirements for various reasons. Therefore, small-diameter pile foundations are often required for reinforcement to ensure the stability and safety of the buildings.

[0003] However, the bearing capacity of these supplementary small-diameter pile foundations must be verified through precise testing. Currently, the conventional methods for testing the compressive bearing capacity of pile foundations are mainly static load tests and high-strain tests. However, these testing methods have some obvious drawbacks. On the one hand, the equipment they use is often bulky and heavy, making it extremely inconvenient to transport and operate. On the other hand, these equipment requires a large site space, which undoubtedly poses a huge challenge for pile foundations in some places with limited site conditions, making testing in these locations extremely difficult. Utility Model Content

[0004] In response to the shortcomings of the existing technology, the utility model proposes a compensating pile foundation compressive bearing capacity detection device, which is small in size, occupies little site space, and is suitable for pile foundation compressive bearing capacity detection under limited site conditions, solving the problem that existing detection methods are difficult to implement under limited site conditions.

[0005] To achieve the above objectives, the present invention provides the following technical solutions:

[0006] A compensating pile foundation compressive bearing capacity detection device includes a compensating pile, a steel cage, a steel bar gauge, a surface vibrating wire strain gauge, an embedded vibrating wire strain gauge and a platform plate, wherein the steel cage is arranged at the pile core of the compensating pile, and the steel cage partially protrudes from the top of the compensating pile; the steel bar gauge and the embedded vibrating wire strain gauge are both arranged on the steel cage, the surface vibrating wire strain gauge is arranged on the outer wall of the compensating pile, the platform plate is arranged at the top of the compensating pile, and the top of the steel cage and the embedded vibrating wire strain gauge are both arranged within the platform plate.

[0007] Preferably, an isolation plate is provided on the outer side wall of the compensation pile, the isolation plate surrounds the outer side wall of the compensation pile, and the isolation plate is located above the surface vibrating wire strain gauge.

[0008] Preferably, the isolation plate is made of iron plate or wooden plate.

[0009] Preferably, the steel cage includes an upper steel cage and a lower steel cage, the lower steel cage is arranged at the pile core of the compensation pile, and a plurality of steel bars are provided, and the plurality of steel bars are evenly arranged at the lower steel cage.

[0010] Preferably, the surface vibrating wire strain gauges are symmetrically arranged in pairs on the outer side walls of the compensation pile.

[0011] Preferably, the embedded vibrating wire strain gauges are symmetrically arranged in pairs on the top of the steel cage.

[0012] Preferably, the platform plate is placed on top of the compensation pile by casting.

[0013] Compared with the prior art, the present invention has the following advantages.

[0014] 1. The compensating pile foundation compressive bearing capacity detection device of the utility model is small in size and occupies little site space. It is suitable for pile foundation compressive bearing capacity detection under limited site conditions, solving the problem that existing detection methods are difficult to implement under limited site conditions.

[0015] 2. The synergistic effect of the compensation pile, steel cage, steel bar meter, surface vibrating wire strain gauge, embedded vibrating wire strain gauge and platform plate makes the detection device highly reliable and stable.

[0016] 3. The setting of the isolation plate can effectively protect the surface vibrating wire strain gauge and compensation pile, reducing the impact of the external environment on the test results. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative labor.

[0018] Figure 1 This is a schematic diagram of the overall structure of a compensating pile foundation compressive bearing capacity detection device according to Example 1 of the utility model;

[0019] Figure 2 This is a top view of a compensating pile foundation compressive bearing capacity detection device according to Example 1 of the utility model;

[0020] Figure identification: 1. Compensation pile; 2. Steel cage; 21. Upper steel cage; 22. Lower steel cage; 3. Steel gauge; 4. Surface vibrating wire strain gauge; 5. Embedded vibrating wire strain gauge; 6. Platform plate; 7. Isolation plate. DETAILED DESCRIPTION

[0021] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0022] In the description of this utility model, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings and are intended solely to facilitate the description of this utility model and simplify the description. They do not indicate or imply that the devices or components referred to must have a specific orientation, be constructed, or operate in a specific orientation. Therefore, they should not be construed as limitations on this utility model. Furthermore, the terms "first," "second," "third," and "fourth," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0023] In the description of this utility model, it should be noted that, unless otherwise expressly specified or limited, the terms "mounted," "connected," and "connected" should be understood in a broad sense. For example, they can refer to fixed connections, detachable connections, or integral connections; mechanical connections, electrical connections; direct connections, indirect connections through an intermediate medium, and internal communication between two components. Those skilled in the art will understand the specific meanings of the above terms in this utility model based on the specific circumstances.

[0024] See also Figure 1 as well as Figure 2 The present invention discloses a compressive bearing capacity detection device for a compensation pile foundation, comprising a compensation pile 1, a steel cage 2, a steel bar gauge 3, a surface vibrating wire strain gauge 4, an embedded vibrating wire strain gauge 5 and a platform plate 6. The steel cage 2 is arranged in the pile core of the compensation pile 1, and the steel cage 2 partially protrudes from the top of the compensation pile 1; the steel bar gauge 3 and the embedded vibrating wire strain gauge 5 are both arranged on the steel cage 2, the surface vibrating wire strain gauge 4 is arranged on the outer wall of the compensation pile 1, the platform plate 6 is arranged on the top of the compensation pile 1, and the top of the steel cage 2 and the embedded vibrating wire strain gauge 5 are both arranged in the platform plate 6.

[0025] Specifically, the top of the steel cage 2 protrudes above the top of the compensation pile 1. A steel gauge 3 is mounted on the steel cage 2 and within the core of the compensation pile 1. This gauge measures the stress on the steel cage 2, providing data support for the calculation of the compressive bearing capacity of the foundation of the compensation pile 1. A surface-mounted vibrating wire strain gauge 4 is mounted on the top of the outer wall of the compensation pile 1 to reflect the deformation characteristics of the compensation pile 1 under compression. An embedded vibrating wire strain gauge 5 is mounted on the top of the steel cage 2 to measure the strain at the top of the steel cage 2, further supplementing and improving the measurement of the stress data on the foundation of the compensation pile 1. The top of the compensation pile 1 is arranged in the platform plate 6, the top of the steel cage 2 (that is, the part of the steel cage 2 protruding from the top of the compensation pile 1) is arranged in the platform plate 6, and the embedded vibrating wire strain gauge 5 is arranged in the platform plate 6. The platform plate 6 acts as a weight to press on the top of the compensation pile 1. Its function is to apply pressure to the compensation pile 1, so that the steel gauge 3, the surface vibrating wire strain gauge 4 and the embedded vibrating wire strain gauge 5 can sense the strain of the compensation pile 1 under the action of pressure, thereby obtaining relevant data to evaluate the compressive bearing capacity of the foundation of the compensation pile 1.

[0026] Compared with traditional large-scale pile foundation compressive bearing capacity detection devices, the present invention's compensating pile foundation compressive bearing capacity detection device is smaller in size and can better adapt to environments with limited space. The rebar meter 3, surface vibrating wire strain gauge 4, and embedded vibrating wire strain gauge 5 are all relatively compact measuring devices that can accurately measure various parameters of the pile foundation under compression without taking up a lot of space. At the same time, although the platform plate 6 acts as a heavy object to exert pressure, it can be reasonably designed and sized according to the actual site conditions, avoiding the space occupation problem of traditional large-scale pressure equipment. In the case of limited space, the detection device can be flexibly installed and arranged without being overly restricted by the shape and size of the site; and the connection method between the various components is simple and efficient, which reduces unnecessary space waste and further reduces the site space requirements of the entire device.

[0027] See also Figure 1 as well as Figure 2 An isolation plate 7 is provided on the outer wall of the compensation pile 1. The isolation plate 7 surrounds the outer wall of the compensation pile 1 and is located above the surface-type vibrating wire strain gauge 4. This isolation plate 7 protects the surface-type vibrating wire strain gauge 4 and the compensation pile 1, reducing the impact of external factors on the test results and improving the accuracy and stability of the test. The isolation plate 7 is made of iron or wood. These materials effectively isolate the surface-type vibrating wire strain gauge 4 and provide sufficient strength and durability.

[0028] See also Figure 1The steel cage 2 includes an upper steel cage 21 and a lower steel cage 22. The lower steel cage 22 is disposed within the core of the compensation pile 1, with the upper steel cage 21 protruding from the top of the compensation pile 1. A plurality of steel gauges 3 are provided, each evenly disposed on the lower steel cage 22. The steel gauges 3 are uniformly secured to the steel cage 2 by welding or binding. In this embodiment, four steel gauges 3 are provided, each evenly secured to the lower steel cage 22. During testing, the uniformly disposed steel gauges 3 on the lower steel cage 22 can more accurately reflect the stress conditions of the steel cage 2, providing reliable data for calculating the compressive bearing capacity of the compensation pile 1 foundation.

[0029] Surface-mounted vibrating-wire strain gauges 4 are symmetrically positioned in pairs on the outside of the compensating pile 1. In this embodiment, two surface-mounted vibrating-wire strain gauges 4 are provided, symmetrically positioned at the top of the outer wall of the compensating pile 1. These surface-mounted vibrating-wire strain gauges 4 are either glued or pre-embedded in the top of the outer wall of the compensating pile 1. These two symmetrically positioned surface-mounted vibrating-wire strain gauges 4 more accurately reflect the force distribution in the foundation of the compensating pile 1, improving detection accuracy.

[0030] The embedded vibrating-wire strain gauges 5 are symmetrically positioned in pairs on the top of the rebar cage 2. In this embodiment, four embedded vibrating-wire strain gauges 5 are provided, each symmetrically positioned in pairs on the top of the rebar cage 2. The embedded vibrating-wire strain gauges 5 are secured to the top of the rebar cage 2 by tying or welding. The symmetrical embedded vibrating-wire strain gauges 5 more accurately capture force information on the top of the rebar cage 2, further improving detection accuracy.

[0031] The platform plate 6 is placed on the top of the compensation pile 1 by pouring. In actual construction, the platform plate 6 is placed on the top of the compensation pile 1 by pouring, so that it forms a stable connection with the compensation pile 1.

[0032] The implementation principle of this embodiment is as follows:

[0033] First, after the foundation construction of the compensation pile 1 is completed, a surface vibrating wire strain gauge 4 is attached to the top of the outer wall of the compensation pile 1. Next, the reinforcement cage 2 is tied. The rebar gauge 3 is evenly tied and fixed to the lower rebar cage 22. Once secured, the rebar cage 2 is inserted into the core of the compensation pile 1. Then, after the rebar cage 2 is secured, the embedded vibrating wire strain gauge 5 is tied and fixed to the top of the rebar cage 2. After that, the platform slab 6 is poured. During the pouring process, the quality and density of the concrete must be ensured to ensure the strength and stability of the platform slab 6. Finally, after the concrete of the platform slab 6 reaches a certain strength, the strain values ​​of the surface vibrating wire strain gauge 4, the rebar gauge 3, and the embedded vibrating wire strain gauge 5 are read. Through analysis and calculation, these strain values ​​can be converted into the compressive bearing capacity of the pile foundation.

[0034] The entire detection device also includes an isolation plate 7 surrounding the outer side of the compensating pile. Made of either iron or wood, the isolation plate 7 offers strength and durability, effectively protecting the compensating pile, reducing the impact of external factors on the test results, and improving the accuracy and stability of the test.

[0035] The steel cage 2 includes an upper steel cage 21 and a lower steel cage 22. The lower steel cage 22 is set in the pile core of the compensation pipe pile. Several steel gauges 3 are evenly arranged on the lower steel cage 22. During testing, they can accurately reflect the stress condition of the steel cage 2 and provide reliable data for calculating the compressive bearing capacity of the pile foundation.

[0036] The surface vibrating wire strain gauge 4 is symmetrically arranged on the outside of the compensation pile 1. The symmetrically arranged surface vibrating wire strain gauge 4 can more accurately reflect the force distribution of the compensation pile 1 foundation and improve the detection accuracy.

[0037] The embedded vibrating wire strain gauge 5 is symmetrically arranged on the top of the steel cage 2. The symmetrically arranged embedded vibrating wire strain gauge 5 can more accurately obtain the force information on the top of the steel cage 2, further improving the accuracy of the detection.

[0038] A platform plate 6 is cast atop the compensation piles, forming a secure connection. The platform plate 6 acts as a weight, pressing down on the piles and exerting pressure on them. This allows the rebar gauge 3, surface-mounted vibrating wire strain gauge 4, and embedded vibrating wire strain gauge 5 to sense the strain of the pile foundation under pressure, thereby acquiring relevant data to assess the compressive bearing capacity of the pile foundation.

[0039] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A compensating pile foundation compressive bearing capacity detection device, characterized in that: The invention comprises a compensation pile (1), a steel cage (2), a steel bar meter (3), a surface vibrating wire strain gauge (4), an embedded vibrating wire strain gauge (5) and a platform plate (6), wherein the steel cage (2) is arranged at the pile core of the compensation pile (1), and the steel cage (2) partially protrudes from the top of the compensation pile (1); the steel bar meter (3) and the embedded vibrating wire strain gauge (5) are both arranged on the steel cage (2), the surface vibrating wire strain gauge (4) is arranged on the outer wall of the compensation pile (1), the platform plate (6) is arranged at the top of the compensation pile (1), and the top of the steel cage (2) and the embedded vibrating wire strain gauge (5) are both arranged in the platform plate (6).

2. A compensating pile foundation compressive bearing capacity detection device according to claim 1, characterized in that: An isolation plate (7) is provided on the outer side wall of the compensation pile (1), the isolation plate (7) surrounds the outer side wall of the compensation pile (1), and the isolation plate (7) is located above the surface vibrating wire strain gauge (4).

3. A compensating pile foundation compressive bearing capacity detection device according to claim 2, characterized in that: The material of the isolation plate (7) is an iron plate or a wooden plate.

4. The compensating pile foundation compressive bearing capacity detection device according to claim 1, characterized in that: The steel cage (2) comprises an upper steel cage (21) and a lower steel cage (22); the lower steel cage (22) is arranged on the pile core of the compensation pile (1); a plurality of steel gauges (3) are provided, and the plurality of steel gauges (3) are evenly arranged on the lower steel cage (22).

5. The compensating pile foundation compressive bearing capacity detection device according to claim 1, characterized in that: The surface vibrating wire strain gauges (4) are symmetrically arranged in pairs on the outer side wall of the compensation pile (1).

6. The compensating pile foundation compressive bearing capacity detection device according to claim 1, characterized in that: The embedded vibrating wire strain gauges (5) are symmetrically arranged in pairs on the top of the steel cage (2).

7. The compensating pile foundation compressive bearing capacity detection device according to claim 1, characterized in that: The platform plate (6) is placed on top of the compensation pile (1) by pouring.

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