Photovoltaic power generation PHC pipe pile foundation single pile vertical uplift bearing capacity detection device

Abstract

The utility model belongs to the technical field of tubular pile performance testing, and particularly relates to a photovoltaic power generation PHC tubular pile foundation single pile vertical uplift bearing capacity detection device which comprises a tubular pile body, and a tubular pile end plate is fixed to the top of the tubular pile body; the fixed disc is fixed on the tubular pile end plate; the supporting frames are arranged on the two sides of the pipe pile body; the bearing frame is erected at the tops of the two supporting frames; the center hole jack is placed on the bearing frame; the anchorage device is arranged at the top of a telescopic shaft of the center hole jack; and the bottom of the dowel bar is connected with the fixed disc. According to the utility model, the uplift bearing capacity of the tubular pile foundation can be detected by virtue of one cross-core jack, so that the cost can be reduced; in addition, the top of the dowel bar can be fixed by means of the anchorage device and the clamping piece in the anchorage device anchor hole, operation is convenient and fast, and fixation is firm. And secondly, the supporting frame and the bearing frame are limited and fixed by virtue of the limiting plate and the limiting seat, so that the bearing frame and the supporting frame can be prevented from sliding, and the detection accuracy is ensured.

Description

Technical Field

[0001] The utility model belongs to the technical field of pipe pile performance testing, and particularly relates to a device for detecting the vertical uplift bearing capacity of a single pile of a PHC pipe pile foundation for photovoltaic power generation. Background Technique

[0002] In flat single-axis tracking bracket photovoltaic power generation, solar panels are installed on flat single-axis tracking brackets, and the rotation of the bracket drive shaft is controlled to adjust the angle between the panels and sunlight, so as to maximize the reception of sunlight and achieve maximum energy conversion. The tracking bracket foundation generally adopts a pile foundation, and the PHC pipe pile foundation is widely used because of its many advantages such as reliable quality, strong applicability and high degree of mechanized construction. However, since the PHC pipe pile foundation is a part of the tracking bracket, the quality of its performance directly affects the overall performance of the bracket. Therefore, the requirement for the uplift bearing capacity of a single PHC pipe pile foundation is very strict. The vertical uplift bearing capacity of a single PHC300 pipe pile is not less than 30KN, and the vertical uplift bearing capacity of a single PHC400 pipe pile is not less than 36.6KN. In order to ensure that the vertical uplift bearing capacity of the single PHC pipe pile foundation meets the design requirements, inspection is required.

[0003] In the prior art, a device for detecting the uplift bearing capacity of a pipe pile is disclosed. For example, CN2019080445U discloses an end sleeve type prestressed pipe pile uplift detection device, which includes an uplift end sleeve, shear bolts, a stress shaft, nuts and a backing plate. The uplift end sleeve is fixedly connected to the pipe pile flange through bolts. A lower through hole is provided in the center of the uplift end sleeve. A plurality of bolt holes are provided in the circumferential direction of the uplift end sleeve and the pipe pile. The shear bolts are arranged in the bolt holes to fixedly connect the uplift end sleeve and the pipe pile together. The stress shaft is coaxially arranged with the pipe pile, and its lower end extends out of the lower through hole of the uplift end sleeve, and its upper end extends out through the upper through hole opened on the steel beam. The backing plate is sleeved on the stress shaft, and the nuts are threadedly connected to both ends of the stress shaft. The upper nut tightly fixes the backing plate on the steel beam, and the lower nut supports under the uplift end sleeve. The utility model can greatly shorten the installation time of the pipe pile uplift test, effectively save the construction period and reduce the cost, and can also avoid the defects caused by welding quality problems and improve the test success rate.

[0004] It is undeniable that the end sleeve type prestressed pipe pile uplift detection device disclosed in this patent can indeed achieve the above effects, but it still has certain deficiencies. It needs to set jacks at both ends of the bottom of the steel beam respectively. Compared with setting a single jack, the cost is high; and the jacks are set at the bottom of the steel beam, and the jacks also need to bear the weight of the steel beam when jacking, which will increase the load-bearing of the jacks; in addition, the top of the stress shaft is fixed by nuts. Before installation and detection, it is necessary to manually rotate the nuts to adjust the nuts to abut against the backing plate, which is inconvenient.

[0005] The information disclosed in this background technology section is only intended to increase the understanding of the overall background of the present invention, and should not be regarded as acknowledging or suggesting in any form that the information constitutes the prior art already known to a person skilled in the art. Utility Model Content

[0006] The utility model aims to provide a photovoltaic power generation PHC pipe pile foundation single pile vertical pull-out bearing capacity detection device to solve the problems existing in the end sleeve type prestressed pipe pile pull-out detection device in the background technology.

[0007] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0008] A photovoltaic power generation PHC pipe pile foundation single pile vertical pull-out bearing capacity detection device, characterized by comprising:

[0009] A pipe pile body, with a pipe pile end plate fixed on the top of the pipe pile body;

[0010] A fixing plate fixed to the end plate of the pipe pile by bolts;

[0011] Support frames symmetrically arranged on both sides of the pipe pile body;

[0012] A load-bearing frame erected on the top of the two support frames and located above the pipe pile body;

[0013] A through-type jack placed on the load-bearing frame;

[0014] An anchor is arranged at the top of the telescopic shaft of the through-type jack, and the anchor hole of the anchor is provided with a clip;

[0015] The bottom is connected to the fixing plate and the top vertically upwards passes through the load-bearing frame, the through-type jack, the anchor and the force transmission rod of the clip in sequence.

[0016] Preferably, a first circular hole corresponding to the force transmission rod is opened at the center of the fixing plate; a limiting cap is integrally formed at the bottom of the force transmission rod, and the diameter of the limiting cap is larger than the diameter of the first circular hole.

[0017] Preferably, the force transmission rod is a ribbed steel bar.

[0018] Preferably, the anchor is a single-hole anchor.

[0019] Preferably, a limit plate is fixed on the top of the support frame; and a limit seat corresponding to the limit plate at a corresponding position is provided at the bottom of each end of the load-bearing frame, and the limit seat is composed of limit rods welded to the bottom of the load-bearing frame and located on both sides of the limit plate.

[0020] Preferably, the load-bearing frame is rectangular; a channel steel is fixed to the bottom of the support frame.

[0021] Compared with the prior art, the utility model has the following beneficial effects:

[0022] The utility model provides a plurality of components such as a fixing plate, a support frame, a load-bearing frame, a through-type jack, an anchor and a force transmission rod. The pull-out bearing capacity test of the pipe pile foundation can be realized with the help of a through-type jack, thereby reducing costs. In addition, the top of the force transmission rod can be fixed with the help of the anchor and the clip in the anchor hole of the anchor. The operation is convenient and the fixation is reliable. Secondly, the support frame and the load-bearing frame are limited and fixed with the help of the limit plate and the limit seat, which can avoid the load-bearing frame and the support frame from slipping, facilitate the smooth implementation of the test, and ensure the accuracy of the test. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0024] Figure 2 for Figure 1 Left view of

[0025] Figure 3 for Figure 1 A top view of

[0026] Figure 4 It is a structural schematic diagram of the load-bearing frame of the utility model;

[0027] Figure 5 It is a structural schematic diagram of the force transmission rod of the utility model;

[0028] Figure 6 It is a structural schematic diagram of the fixed disk of the utility model.

[0029] Description of main reference numerals:

[0030] 1. Pipe pile body; 11. Pipe pile end plate;

[0031] 2. fixed plate; 21. first circular hole;

[0032] 3. Support frame; 31. Channel steel; 32. Limiting plate;

[0033] 4. Load-bearing frame; 41. Limit seat; 411. Limit rod;

[0034] 5. Through-type jack;

[0035] 6. Anchor; 61. Clip;

[0036] 7. Force transfer rod; 71. Limiting cap. DETAILED DESCRIPTION

[0037] The following is a clear and complete description of the technical solution of the utility model patent. Obviously, the described embodiments are part of the embodiments of the utility model, not all of them. Based on the embodiments of the utility model, all other embodiments obtained by technicians in this field without creative work are within the scope of protection of the utility model.

[0038] Embodiment

[0039] See attached Figures 1-6 , a photovoltaic power generation PHC pipe pile foundation single pile vertical pull-out bearing capacity detection device, comprising:

[0040] A pipe pile body 1, with a pipe pile end plate 11 fixed on the top of the pipe pile body 1;

[0041] The fixing plate 2 is fixed on the end plate 11 of the pipe pile by bolts; Figure 6 As shown, the fixing plate 2 is provided with through holes corresponding to the bolts;

[0042] A support frame 3 is symmetrically arranged on both sides of the pipe pile body 1, and a channel steel 31 is fixed at the bottom of the support frame 3;

[0043] A rectangular load-bearing frame 4 is erected on the top of the two support frames 3 and is located above the pipe pile body 1;

[0044] A through-type jack 5 placed on a load-bearing frame 4;

[0045] An anchor 6 is arranged at the top of the telescopic shaft of the through-type jack 5, and the anchor hole of the anchor 6 is provided with a clip 61; specifically, the anchor 6 is a single-hole anchor;

[0046] A force transmission rod 7 is connected to the fixed plate 2 at the bottom and vertically extends upward through the load-bearing frame 4, the through-type jack 5, the anchor 6 and the clip 61 in sequence; specifically, a first circular hole 21 corresponding to the force transmission rod 7 is opened at the center position of the fixed plate 2; a limiting cap 71 is integrally formed at the bottom of the force transmission rod 7, and the diameter of the limiting cap 71 is larger than the aperture of the first circular hole 21 and is located below the fixed plate 2; the force transmission rod 7 is a ribbed steel bar.

[0047] In this embodiment, a limit plate 32 is fixed on the top of the support frame 3; a limit seat 41 corresponding to the limit plate 32 is respectively provided at the bottom of both ends of the load-bearing frame 4, and the limit seat 41 is composed of a limit rod 411 welded to the bottom of the load-bearing frame 4 and located on both sides of the limit plate 32.

[0048] The construction of the photovoltaic tracking bracket PHC pile foundation (i.e., the pile body 1 in this embodiment) is completed. After the pile foundation is solidified, the top of the force transmission rod 7 is passed through the first circular hole 21 of the fixed plate 2, and the limit cap 71 is located at the bottom of the fixed plate 2; the fixed plate 2 is fixed to the pile end plate 11 at the top of the pile body 1 with bolts, which is convenient for subsequent pull-out bearing capacity testing. The two support frames 3 are symmetrically placed on both sides of the pile body 1. After adjusting the distance between the two support frames 3, the load-bearing frame 4 is erected on the top of the two support frames 3, and the limit seat 41 corresponds to the limit plate 32 at the top of the support frame 3. The limit plate 32 is located in the limit seat 41. In this way, with the help of the cooperation of the limit plate 32 and the limit seat 41, it can be ensured that when the device is stressed, the load-bearing frame 4 and the support frame 3 do not slip, which is convenient for the smooth implementation of the test and ensures the accuracy of the test.

[0049] The top of the force transmission rod 7 passes through the load-bearing frame 4, the through-type jack 5, the anchor 6 and the clip 61. The top of the force transmission rod 7 can be limited and fixed by means of the clip 61. In this embodiment, the hydraulic oil pipe of the through-type jack 5 is connected to an external manual hydraulic pump, and a pressure gauge is provided on the manual hydraulic pump. When the manual hydraulic pump is operated, the through-type jack 5 works, and the telescopic shaft of the through-type jack 5 extends to slowly move upward to the anchor 6. The clip 61 further clamps the force transmission rod 7 and generates an upward pulling force on the force transmission rod 7. The force transmission rod 7 generates an upward pulling force on the pipe pile body 1 through the limiting cap 71 and the fixing plate 2. The pressure gauge displays the working load, and realizes continuous, stable and accurate vertical pulling force output. When the vertical pull-out bearing capacity of the single pile of the PHC pipe pile foundation reaches the limit, the working load value of the pressure gauge will stop changing, thereby completing the accurate pull-out bearing capacity test of the pipe pile foundation, and preventing the device from being overstressed and collapsing, ensuring the safety of the inspection personnel.

[0050] The foregoing description of specific exemplary embodiments of the utility model is for the purpose of illustration and illustration. These descriptions are not intended to limit the utility model to the precise form disclosed, and it is clear that many changes and variations can be made based on the above teachings. The purpose of selecting and describing the exemplary embodiments is to explain the specific principles of the utility model and its practical application, so that those skilled in the art can realize and utilize various different exemplary embodiments of the utility model and various different options and changes. The scope of the utility model is intended to be defined by the claims and their equivalents.

Claims

1. A photovoltaic power generation PHC pipe pile foundation single pile vertical pull-out bearing capacity detection device, characterized in that: include: A pipe pile body, with a pipe pile end plate fixed on the top of the pipe pile body; A fixing plate fixed to the end plate of the pipe pile by bolts; Support frames symmetrically arranged on both sides of the pipe pile body; A load-bearing frame erected on the top of the two support frames and located above the pipe pile body; A through-type jack placed on the load-bearing frame; An anchor is arranged at the top of the telescopic shaft of the through-type jack, and the anchor hole of the anchor is provided with a clip; A force transmission rod having a bottom connected to the fixing plate and a top vertically extending upward and sequentially passing through the load-bearing frame, the through-type jack, the anchor and the clip; Among them, a limit plate is fixed on the top of the support frame; the bottoms of both ends of the load-bearing frame are respectively provided with limit seats corresponding to the limit plates at corresponding positions, and the limit seats are composed of limit rods welded to the bottom of the load-bearing frame and located on both sides of the limit plates.

2. The photovoltaic power generation PHC pipe pile foundation single pile vertical pull-out bearing capacity detection device according to claim 1 is characterized in that: A first circular hole corresponding to the force transmission rod is opened at the center of the fixing plate; A limiting cap is integrally formed at the bottom of the force transmission rod, and the diameter of the limiting cap is larger than the diameter of the first circular hole.

3. The photovoltaic power generation PHC pipe pile foundation single pile vertical pull-out bearing capacity detection device according to claim 1 is characterized in that: The force transmission rod is a ribbed steel bar.

4. The photovoltaic power generation PHC pipe pile foundation single pile vertical pull-out bearing capacity detection device according to claim 1, characterized in that: The anchor is a single-hole anchor.

5. The photovoltaic power generation PHC pipe pile foundation single pile vertical pull-out bearing capacity detection device according to claim 1, characterized in that: The load-bearing frame is rectangular; a channel steel is fixed at the bottom of the support frame.

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