Device for detecting strength of pile body of composite foundation

Abstract

The utility model discloses a kind of be suitable for composite foundation pile body strength detection device, including two structures same load-bearing buttress, the bottom of load-bearing buttress is connected with supporting plate, the diameter of supporting plate is 1.5 times-2 times of the maximum outer diameter of load-bearing buttress, first annular groove is dug in the side surface of load-bearing buttress distance top 10cm-20cm, first annular groove is connected with the first laser transmitter for auxiliary detection, first annular groove still is equipped with first horizontal reference line, first laser transmitter on two load-bearing buttresses is oppositely arranged. The contact area of load-bearing buttress and composite foundation is increased by supporting plate, to avoid sinking into soft foundation, by the collocation of first laser transmitter and first horizontal reference line, ensure that the height of two load-bearing buttresses is consistent while keeping horizontal, to ensure that the stress of subsequent stacking is more uniform, to ensure the reliability and stability of static load test.

Description

Technical Field

[0001] This utility model relates to the field of building quality testing technology, and in particular to a device for testing the strength of composite foundation piles. Background Technology

[0002] A cast-in-place concrete pile is a type of infrastructure pile formed by directly drilling holes and pouring concrete into the ground. Because it is formed directly below the ground surface, the quality of the pile and the underlying foundation cannot be directly observed. To ensure construction quality, the quality of the cast-in-place pile is generally tested after concrete pouring. The main testing methods include static load testing, core drilling, low-strain method, high-strain method, and sonic logging.

[0003] Existing technology, such as the pile head protection device disclosed in application number CN202421367285.8, includes a pile base and a protective top seat. The axis of the pile base is vertically arranged, and the protective top seat is coaxially placed on its top surface. Multiple horizontal radial wing seats extend and are fixed to the periphery of the protective top seat, and each wing seat has a sliding adjustment component installed at its bottom, which can slide and adjust its position along its length and lock it in place. The advantage is that this invention, by placing the protective top seat on the top surface of the pile base and pressing it against the periphery of the pile base with multiple clamping and fixing components, can detachably fix the protective top seat to the top surface of the pile base to protect the pile head end face, preventing the protective top seat from moving randomly on the top surface of the pile base and improving the stability of the protective top seat during static load testing.

[0004] The aforementioned technical solution protects the pile head to improve the stability of the protective top seat during static load testing. However, existing static load tests for composite foundations often employ surcharge platform systems, requiring two support structures. In practice, it's difficult to ensure the two support structures are at the same height, especially in composite foundation environments. Composite foundations consist of various soil types or reinforcements, with poor surface smoothness and uneven bearing capacity. The lower end of the support structure may experience different settlements in contact with the foundation, leading to height deviations. Furthermore, site limitations, fabrication errors in the support structure, and installation errors can also cause the tops to be off-level. If the heights are inconsistent, the surcharge will be unevenly distributed, tilting towards the lower side, resulting in pile load eccentricity, inaccurate settlement measurements, and reduced test reliability. It may also lead to safety hazards such as support structure deformation and surcharge slippage. Utility Model Content

[0005] This invention aims to solve at least one of the technical problems existing in the prior art. To this end, this invention proposes a device for testing the strength of piles in composite foundations, which can ensure more uniform stress distribution under load and guarantee the reliability and stability of static load tests.

[0006] According to a first aspect embodiment of the present invention, a composite foundation pile strength testing device includes two identical load-bearing supports. The bottom of each load-bearing support is connected to a support plate, the diameter of which is 1.5 to 2 times the maximum outer diameter of the load-bearing support. A first annular groove is excavated on the side of each load-bearing support 10 cm to 20 cm from the top. A first laser emitter for auxiliary testing is connected in the first annular groove. A first horizontal reference line is also provided in the first annular groove. The first laser emitters on the two load-bearing supports are arranged opposite to each other.

[0007] The composite foundation pile strength testing device according to the present invention has at least the following beneficial effects: by increasing the contact area between the load-bearing pier and the composite foundation through the support plate, it avoids sinking into the soft foundation; by matching the first laser emitter with the first horizontal reference line, it ensures that the two load-bearing piers are at the same height and remain horizontal, thereby ensuring that the subsequent load is more uniform and ensuring the reliability and stability of the static load test.

[0008] According to some embodiments of this utility model, the load-bearing support is a frustum structure, and the top surface of the load-bearing support is parallel to the centerline of the first annular groove, the first horizontal reference line, and the bottom surface of the load-bearing support.

[0009] According to some embodiments of the present invention, a first mounting hole is provided in the first annular groove, and the first laser emitter is detachably connected to the first mounting hole.

[0010] According to some embodiments of the present invention, a plurality of first arc-shaped horizontal pipes are connected in the first annular groove.

[0011] According to some embodiments of the present invention, the first laser emitter is connected at the gap between adjacent first arc-shaped horizontal tubes.

[0012] According to some embodiments of the present invention, the first horizontal reference line is engraved on the surface of the first arc-shaped horizontal tube.

[0013] According to some embodiments of the present invention, the first laser emitter is electrically connected to the battery.

[0014] According to some embodiments of the present invention, the load-bearing support also includes a second laser emitter. A second annular groove is excavated on the side of the load-bearing support 10cm-15cm from the bottom. The second laser emitter is connected to the second annular groove. A second horizontal reference line is also provided in the second annular groove. The center line of the second annular groove is parallel to the second horizontal reference line and the top surface of the load-bearing support.

[0015] According to some embodiments of the present invention, a second mounting hole is provided in the second annular groove, and the second laser emitter is detachably connected to the second mounting hole.

[0016] According to some embodiments of the present invention, a plurality of second arc-shaped horizontal tubes are installed in the second annular groove, the second mounting hole is disposed in the gap between adjacent second arc-shaped horizontal tubes, the second horizontal reference line is engraved on the surface of the second arc-shaped horizontal tube, and the second laser emitter is electrically connected to the battery.

[0017] Additional aspects and advantages of this invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description

[0018] The present invention will be further described below with reference to the accompanying drawings and embodiments, wherein:

[0019] Figure 1 This is a structural schematic diagram of a composite foundation pile strength testing device according to an embodiment of the present invention.

[0020] Figure 2 This is a structural schematic diagram of a composite foundation pile strength testing device according to another embodiment of the present invention.

[0021] 100, load-bearing support; 110, first annular groove; 120, first horizontal baseline; 130, first mounting hole; 140, first arc-shaped horizontal pipe; 150, second annular groove; 160, second horizontal baseline; 170, second mounting hole; 180, second arc-shaped horizontal pipe; 200, support plate; 310, first laser emitter; 320, second laser emitter. Detailed Implementation

[0022] The embodiments of this utility model 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 are only used to explain this utility model, and should not be construed as limiting this utility model.

[0023] In the description of this utility model, it should be understood that the directional descriptions, such as up, down, front, back, left, right, etc., indicate the directional or positional relationship based on the directional or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element 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.

[0024] In the description of this utility model, "several" means one or more, "multiple" means two or more, "greater than," "less than," and "exceeding" are understood to exclude the stated number, while "above," "below," and "within" are understood to include the stated number. If "first" or "second" is used in the description, it is only for the purpose of distinguishing technical features and should not be construed as indicating or implying relative importance, or implicitly indicating the number of indicated technical features, or implicitly indicating the order of the indicated technical features.

[0025] In the description of this utility model, unless otherwise explicitly defined, terms such as "setting," "installation," and "connection" should be interpreted broadly, and those skilled in the art can reasonably determine the specific meaning of the above terms in this utility model in conjunction with the specific content of the technical solution.

[0026] refer to Figure 1 As shown, the composite foundation pile strength testing device according to an embodiment of the present invention includes two identical load-bearing supports 100. The bottom of the load-bearing supports 100 is connected to a support plate 200. The diameter of the support plate 200 is 1.5 to 2 times the maximum outer diameter of the load-bearing supports 100. A first annular groove 110 is excavated on the side of the load-bearing supports 100 10cm to 20cm from the top. A first laser emitter 310 for auxiliary testing is connected in the first annular groove 110. A first horizontal reference line 120 is also provided in the first annular groove 110. The first laser emitters 310 on the two load-bearing supports 100 are arranged opposite to each other.

[0027] In actual use, the contact area between the load-bearing support 100 and the composite foundation is increased by the support plate 200 to avoid sinking into the soft foundation. Then, by matching the first laser emitter 310 with the first horizontal reference line 120, the two load-bearing supports 100 are kept at the same height and horizontal, thereby ensuring that the stress of subsequent load is more uniform and ensuring the reliability and stability of the static load test.

[0028] In some specific embodiments of this utility model, it may also have the following additional technical features: the load-bearing support 100 is a frustum structure, and the top surface of the load-bearing support 100 is parallel to the centerline of the first annular groove 110, the first horizontal reference line 120, and the bottom surface of the load-bearing support 100. The frustum-shaped load-bearing support 100 is narrower at the top and wider at the bottom, which on the one hand has a low center of gravity and is not easy to tip over, and on the other hand has a larger bottom area, thus providing better stability when combined with the support plate 200.

[0029] In some specific embodiments of this utility model, it may also have the following additional technical features: a first mounting hole 130 is provided in the first annular groove 110, and the first laser emitter 310 is detachably connected to the first mounting hole 130.

[0030] In use, the first laser emitter 310 is inserted into the first mounting hole 130 of the first annular groove 110. When hoisting the load-bearing support 100, the angle of the load-bearing support 100 is adjusted so that the first mounting hole 130 is opposite to the other load-bearing support 100, so as to ensure that the laser emitted by the first laser emitter 310 illuminates the other load-bearing support 100. To facilitate the determination of whether the two load-bearing supports 100 are at the same height, the laser emitted by the first laser emitter 310 is compared with the first horizontal reference line 120 to determine whether the two load-bearing supports 100 are at the same height.

[0031] In some specific embodiments of this utility model, it may also have the following additional technical features: a plurality of first arc-shaped horizontal pipes 140 are connected in the first annular groove 110. By observing the air bubbles on the surface of the liquid in the first arc-shaped horizontal pipes 140, workers can intuitively judge whether the load-bearing support 100 is level, thus avoiding the occurrence of unevenness of the load-bearing support 100.

[0032] In some specific embodiments of this utility model, it may also have the following additional technical features: the first laser emitter 310 is connected in the gap between adjacent first arc-shaped horizontal tubes 140.

[0033] In some specific embodiments of this utility model, it may also have the following additional technical features: a first horizontal reference line 120 is engraved on the surface of the first arc-shaped horizontal tube 140. Through the above design, when the laser emitted by the first laser emitter 310 irradiates the opposing load-bearing support 100, it can be more easily compared with the first horizontal reference line 120 of the first arc-shaped horizontal tube 140 on the opposing load-bearing support 100, thereby more quickly determining whether the two load-bearing supports 100 are at the same height.

[0034] The first arc-shaped horizontal tube 140 is made of transparent or semi-transparent material. A horizontal reference line is engraved on the surface of the first arc-shaped horizontal tube 140. On the one hand, it can be used as a reference line for the laser, and on the other hand, it can also be used as an auxiliary reference line for the bubbles inside the first arc-shaped horizontal tube 140, so that workers can visually determine whether the bubbles are located in the center of the first arc-shaped horizontal tube 140.

[0035] In some specific embodiments of this utility model, it may also have the following additional technical features: the first laser emitter 310 is electrically connected to a battery (not shown in the figure).

[0036] refer to Figure 2As shown, in some specific embodiments of this utility model, it may also have the following additional technical features: the load-bearing support 100 further includes a second laser emitter 320, a second annular groove 150 is excavated on the side of the load-bearing support 100 near the bottom 10cm-15cm, the second laser emitter 320 is connected in the second annular groove 150, a second horizontal reference line 160 is also provided in the second annular groove 150, and the center line of the second annular groove 150 is parallel to the second horizontal reference line 160 and the top surface of the load-bearing support 100.

[0037] In some specific embodiments of this utility model, it may also have the following additional technical features: a second mounting hole 170 is provided in the second annular groove 150, and the second laser emitter 320 is detachably connected to the second mounting hole 170.

[0038] In some specific embodiments of this utility model, it may also have the following additional technical features: a plurality of second arc-shaped horizontal tubes 180 are installed in the second annular groove 150; a second mounting hole 170 is provided in the gap between adjacent second arc-shaped horizontal tubes 180; a second horizontal reference line 160 is engraved on the surface of the second arc-shaped horizontal tubes 180; and a second laser emitter 320 is electrically connected to a battery (not shown in the figure). Specifically, the battery connected to the second laser emitter 320 is embedded in the second annular groove 150. Specifically, the material of the second arc-shaped horizontal tube 180 is the same as that of the first arc-shaped horizontal tube 140. To further improve the positioning accuracy and reduce unexpected situations during the detection process through redundant design, such as the first set of laser emitters being damaged or losing power, a second set of laser emitters and a positioning structure for the horizontal reference line are added to achieve dual positioning and improve positioning accuracy.

[0039] The embodiments of the present utility model have been described in detail above with reference to the accompanying drawings. However, the present utility model is not limited to the above embodiments. Within the scope of knowledge possessed by those skilled in the art, various changes can be made without departing from the spirit of the present utility model.

Claims

1. A device for testing the strength of piles in composite foundations, characterized in that, The device includes two identical load-bearing supports (100). The bottom of each load-bearing support (100) is connected to a support plate (200). The diameter of the support plate (200) is 1.5 to 2 times the maximum outer diameter of the load-bearing support (100). A first annular groove (110) is excavated on the side of each load-bearing support (100) 10cm to 20cm from the top. A first laser emitter (310) for auxiliary detection is connected in the first annular groove (110). A first horizontal reference line (120) is also provided in the first annular groove (110). The first laser emitters (310) on the two load-bearing supports (100) are arranged opposite to each other.

2. The device for testing the strength of composite foundation piles according to claim 1, characterized in that, The load-bearing support (100) is a frustum structure. The top surface of the load-bearing support (100) is parallel to the centerline of the first annular groove (110), the first horizontal reference line (120), and the bottom surface of the load-bearing support (100).

3. The device for testing the strength of composite foundation piles according to claim 1, characterized in that, A first mounting hole (130) is provided in the first annular groove (110), and the first laser emitter (310) is detachably connected to the first mounting hole (130).

4. The device for testing the strength of composite foundation piles according to claim 1, characterized in that, Multiple first arc-shaped horizontal pipes (140) are connected in the first annular groove (110).

5. The device for testing the strength of composite foundation piles according to claim 4, characterized in that, The first laser emitter (310) is connected in the gap between adjacent first arc-shaped horizontal tubes (140).

6. The device for testing the strength of composite foundation piles according to claim 4, characterized in that, The first horizontal reference line (120) is engraved on the surface of the first arc-shaped horizontal tube (140).

7. The device for testing the strength of composite foundation piles according to claim 1, characterized in that, The first laser emitter (310) is electrically connected to the battery.

8. The device for testing the strength of composite foundation piles according to claim 1, characterized in that, The load-bearing support (100) also includes a second laser emitter (320). A second annular groove (150) is excavated on the side of the load-bearing support (100) 10cm-15cm from the bottom. The second laser emitter (320) is connected in the second annular groove (150). A second horizontal reference line (160) is also provided in the second annular groove (150). The center line of the second annular groove (150) is parallel to the second horizontal reference line (160) and the top surface of the load-bearing support (100).

9. The device for testing the strength of composite foundation piles according to claim 8, characterized in that, The second annular groove (150) has a second mounting hole (170) and the second laser emitter (320) is detachably connected to the second mounting hole (170).

10. The device for testing the strength of composite foundation piles according to claim 9, characterized in that, A plurality of second arc-shaped horizontal tubes (180) are installed in the second annular groove (150), the second mounting hole (170) is provided in the gap between adjacent second arc-shaped horizontal tubes (180), the second horizontal reference line (160) is engraved on the surface of the second arc-shaped horizontal tube (180), and the second laser emitter (320) is electrically connected to the battery.

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