High strain detection test device

Abstract

The utility model discloses a high strain detection test device which comprises a hammer frame, a top beam, a bottom beam and supporting legs are arranged on the hammer frame, a lifting device is arranged on the top beam, the output end of the lifting device is connected with a heavy hammer, a guide hole is formed in the bottom of the heavy hammer, a base plate is arranged below the bottom beam, and a blocking plate and a guide rod are arranged on the base plate. The free end of the guide rod is inserted into the guide hole. The utility model has the beneficial effects that the hammer frame is not in direct contact with the pile side foundation through the base plate and the supporting legs, so that the problem that the pile side foundation is uneven or insufficient in bearing capacity can be well solved, and the detection efficiency and the detection quality can be improved; by adjusting the installation direction of the guide rod, the falling direction of the heavy hammer is controlled, high strain detection of the inclined pile is achieved, and the application range is wide.

Description

Technical Field

[0001] The utility model belongs to the technical field of pile foundation strain detection, in particular to a high strain detection test device. Background Art

[0002] As a test method for testing the vertical compressive bearing capacity of a single pile, high strain testing has the characteristics of stable and reliable test data and convenient and fast on-site operation. According to the requirements of the Technical Specifications for Building Pile Testing JGJ106-2014, 5% of the total number of piles and no less than 5 piles need to be sampled for high strain testing to determine whether the bearing capacity of the piles meets the design requirements.

[0003] Conventional high-strain testing requires excavation and leveling of the foundation soil on the pile side to ensure that the guide frame can be placed smoothly. However, during the leveling process, the flatness of the foundation soil and the bearing capacity of the foundation soil cannot be controlled, which often causes the guide frame to deflect after placement, thus affecting the quality and efficiency of testing. In addition, conventional high-strain testing guide frames cannot perform high-strain testing on inclined piles.

[0004] Therefore, we need to design a high strain detection test device to solve these problems. Utility Model Content

[0005] The problem to be solved by the utility model is to provide a high-strain detection test device, which solves the problems that previous tests are greatly affected by the properties of the foundation soil on the side of the pile, have low detection efficiency, poor detection quality, and cannot perform inclined pile detection, and provides a solution that is not affected by the properties of the foundation soil on the side of the pile, has high efficiency, controllable detection quality, and can be used for inclined pile detection.

[0006] In order to solve the above technical problems, the technical solution adopted by the utility model is:

[0007] A high strain detection test device comprises a hammer frame, wherein the hammer frame is provided with a top beam, a bottom beam and supporting legs, the top beam is provided with a lifting device, the output end of the lifting device is connected to a heavy hammer, the bottom of the heavy hammer is provided with a guide hole, a pad is provided under the bottom beam, a blocking plate and a guide rod are provided on the pad, and the free end of the guide rod is inserted into the guide hole.

[0008] Preferably, the support legs are connected to the hammer frame via threads, the number of the support legs is at least three, and the support legs are evenly arranged on the hammer frame around the circumference of the pile body, and the supporting direction of each support leg is perpendicular to the axial direction of the pile body.

[0009] Such an arrangement can provide limited support for the hammer frame and prevent the hammer frame from tilting.

[0010] Preferably, a mounting groove is provided on the blocking plate, and the bottom beam passes through the mounting groove.

[0011] Such an arrangement can not only realize the connection between the hammer frame and the pad, but also support the hammer frame through the pad when installing it.

[0012] Preferably, the guide rod is connected to the pad via threads.

[0013] With such arrangement, the installation direction of the guide rod can be adjusted through the thread, and the inclined pile can be detected through the hammer frame, which has a wide range of applications.

[0014] Preferably, the diameter of the guide hole is not less than the diameter of the guide rod, and the depth of the guide hole is not more than the length of the guide rod.

[0015] With this arrangement, the diameter of the guide rod is smaller than the inner diameter of the guide hole to ensure that the guide rod can be inserted into the guide hole, and the depth of the guide hole does not exceed the length of the guide rod to ensure that the guide rod is not damaged when using a heavy hammer for testing.

[0016] Preferably, the output end of the lifting device is connected to the weight via a lifting rope.

[0017] Such arrangement makes it easy to adjust the position of the heavy hammer so that the guide hole at the bottom of the heavy hammer can be aligned with the guide rod.

[0018] The advantages and positive effects of the utility model are:

[0019] 1. The utility model does not directly contact the pile side foundation, can better adapt to the problem of uneven pile side foundation or insufficient bearing capacity of pile side foundation, and can improve detection efficiency and detection quality.

[0020] 2. The utility model can control the falling direction of the weight by adjusting the installation direction of the guide rod, thereby realizing high-strain detection of the inclined pile. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative labor.

[0022] Figure 1 It is a schematic diagram of the structure of the utility model after being installed on a pile body;

[0023] Figure 2 It is a schematic diagram of the position structure of the blocking plate and the mounting groove of the utility model.

[0024] The following are the descriptions of the reference numerals:

[0025] 1. Hammer frame; 2. Support legs; 3. Pad; 4. Heavy hammer; 5. Lifting device; 6. Top beam; 7. Pile body; 8. Guide rod; 9. Bottom beam; 10. Blocking plate; 11. Lifting rope; 12. Guide hole; 13. Installation groove. DETAILED DESCRIPTION

[0026] In the description of the present utility model, it should be understood that the terms "center", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present utility model. In addition, the terms "first", "second", etc. are only used for descriptive purposes, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, features defined as "first", "second", etc. may explicitly or implicitly include one or more of the features. In the description of the present utility model, unless otherwise specified, "multiple" means two or more.

[0027] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installation", "connection" and "connection" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be an indirect connection through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood by specific circumstances.

[0028] The utility model is further described below in conjunction with the accompanying drawings:

[0029] Example 1: Figure 1-Figure 2 As shown, a high strain detection test device includes a hammer frame 1, on which a top beam 6, a bottom beam 9 and a support leg 2 are arranged, a lifting device 5 is arranged on the top beam 6, an output end of the lifting device 5 is connected to a heavy hammer 4, a guide hole 12 is arranged at the bottom of the heavy hammer 4, a pad 3 is arranged under the bottom beam 9, a blocking plate 10 and a guide rod 8 are arranged on the pad 3, and the free end of the guide rod 8 is inserted into the guide hole 12.

[0030] Specifically, the support legs 2 are connected to the hammer frame 1 through threads, the number of the support legs 2 is at least three, and they are evenly arranged on the hammer frame 1 around the circumference of the pile body 7. The supporting direction of each support leg 2 is perpendicular to the axial direction of the pile body 7. Such an arrangement can provide limited support for the hammer frame 1 and prevent the hammer frame 1 from tilting.

[0031] Specifically, a mounting groove 13 is provided on the blocking plate 10, and the bottom beam 9 passes through the mounting groove 13. Such a configuration can not only realize the connection between the hammer frame 1 and the pad 3, but also support the hammer frame 1 through the pad 3 when installing it.

[0032] Specifically, the guide rod 8 is connected to the pad 3 through threads. Such an arrangement allows the installation direction of the guide rod 8 to be adjusted through the threads, and the inclined pile can be detected through the hammer frame 1, which has a wide range of applications.

[0033] Specifically, the diameter of the guide hole 12 is not less than the diameter of the guide rod 8, and the depth of the guide hole 12 does not exceed the length of the guide rod 8. The configuration in this way makes the diameter of the guide rod 8 smaller than the inner diameter of the guide hole 12 to ensure that the guide rod 8 can be inserted into the guide hole 12, and the depth of the guide hole 12 does not exceed the length of the guide rod 8 to ensure that the guide rod 8 is not damaged when the heavy hammer 4 is used for detection.

[0034] Specifically, the output end of the lifting device 5 is connected to the weight 4 through a lifting rope 11 . Such an arrangement facilitates adjustment of the position of the weight 4 so that the guide hole 12 at the bottom of the weight 4 can be aligned with the guide rod 8 .

[0035] The working process of this embodiment is as follows: when the device is in use, the hammer frame 1 is lifted by a lifting device, and then the hammer frame 1 is placed on the top of the pile body 7 to be tested. When placing it, the position of the pad 3 is adjusted so that the center of the pad 3 is aligned with the center of the top of the pile body 7, and then the legs 2 on the hammer frame 1 are adjusted so that the legs 2 are in contact with the side walls of the pile body 7, so as to limit the hammer frame 1 and prevent it from tilting during testing.

[0036] Then the guide rod 8 is installed on the pad 3 through a thread, and then the lifting device 5 is connected to the weight 4 through the lifting rope 11. Because the weight 4 has a large mass, in order to ensure that the weight 4 can be lifted smoothly, the lifting rope 11 uses a steel cable or an iron chain. After the weight 4 is connected, the weight 4 is lifted by the lifting device 5, and the guide hole 12 at the bottom of the weight 4 is aligned with the guide rod 8. Finally, the weight 4 is lifted to the detection height by the lifting device 5 and released to detect the pile body 7.

[0037] The above is a detailed description of an embodiment of the utility model, but the content is only a preferred embodiment of the utility model and cannot be considered to limit the scope of implementation of the utility model. All equivalent changes and improvements made within the scope of application of the utility model should still fall within the scope of the patent coverage of the utility model.

Claims

1. A high strain detection test device, comprising a hammer frame (1), characterized in that: The hammer frame (1) is provided with a top beam (6), a bottom beam (9) and supporting legs (2); the top beam (6) is provided with a lifting device (5); the output end of the lifting device (5) is connected to a heavy hammer (4); a guide hole (12) is provided at the bottom of the heavy hammer (4); a pad (3) is provided below the bottom beam (9); a blocking plate (10) and a guide rod (8) are provided on the pad (3); the free end of the guide rod (8) is inserted into the guide hole (12).

2. A high strain detection test device according to claim 1, characterized in that: The support legs (2) are connected to the hammer frame (1) via threads, the number of the support legs (2) is at least three, and they are evenly arranged on the hammer frame (1) around the circumference of the pile body (7), and the supporting direction of each support leg (2) is perpendicular to the axial direction of the pile body (7).

3. A high strain detection test device according to claim 1, characterized in that: The blocking plate (10) is provided with a mounting groove (13), and the bottom beam (9) passes through the mounting groove (13).

4. A high strain detection test device according to claim 1, characterized in that: The guide rod (8) is connected to the backing plate (3) via threads.

5. A high strain detection test device according to claim 1, characterized in that: The diameter of the guide hole (12) is not less than the diameter of the guide rod (8), and the depth of the guide hole (12) is not more than the length of the guide rod (8).

6. A high strain detection test device according to claim 1, characterized in that: The output end of the lifting device (5) is connected to the weight (4) via a lifting rope (11).

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