CN219280779U

CN219280779U - Pile body displacement measuring device for single pile vertical static load test

Info

Publication number: CN219280779U
Application number: CN202320312923.5U
Authority: CN
Inventors: 张旭; 冯小宁; 陆成伟
Original assignee: Xuzhou City Hongda Civil Engineering Laboratory LLC
Current assignee: Xuzhou City Hongda Civil Engineering Laboratory LLC
Priority date: 2023-02-25
Filing date: 2023-02-25
Publication date: 2023-06-30
Anticipated expiration: 2033-02-25

Abstract

The utility model relates to the field of measuring devices and discloses a pile body displacement measuring device for a single pile vertical static load test, which comprises an upper column body, wherein a rear anchor ear and a front anchor ear are respectively arranged on two side walls of the upper column body, a first bolt is arranged at the center of the front side wall of the front anchor ear, the rear end of the first bolt penetrates through the front side wall of the front anchor ear, a clamp is movably connected to the end part of the first bolt, a loop bar is arranged at the center of the rear side wall of the rear anchor ear, the front end of the loop bar is fixedly connected to the center of the rear side wall of the rear anchor ear, a control storage module is arranged at the position, close to the front side, of the center of the upper end face of the loop bar, and a signal transmission module is arranged at the rear end of the control storage module. The clamp is enabled to move forwards and backwards through adjusting the first bolt, so that the clamp is applicable to pile bodies with smaller sizes, is convenient to adjust and better in flexibility, is matched with the level gauge for use, and is convenient to level in installation and can detect the inclination angle of the pile body during displacement.

Description

Pile body displacement measuring device for single pile vertical static load test

Technical Field

The utility model relates to the field of measuring devices, in particular to a pile body displacement measuring device for a single pile vertical static load test.

Background

The single pile vertical static load test refers to that vertical load is uniformly transmitted to a building foundation pile, pile tops of the single piles under different load actions are subjected to actual measurement to obtain auxiliary curves such as Q-s curves and s-lg t of the static load test, and then parameters such as characteristic values of the vertical compression resistance bearing capacity of the single piles are deduced according to the curves. Most static load tests provide basis for engineering acceptance, the maximum loading capacity can be determined according to design requirements, no destructive test is performed, namely loading is stopped after the load is loaded to the preset maximum test load, and the displacement data can be recorded by using a measuring device in the measuring process.

The prior patent (publication number: CN 113293809A) discloses a P-Y curve measuring device for a plate pile soil interaction pseudo-static test, which comprises a bearing pile body embedded in a test soil body in a model box, wherein each test section of the bearing pile body is connected with a smooth steel bar perpendicular to the axis of the bearing pile body, one end of the smooth steel bar is fixedly connected with the bearing pile body, the other end of the smooth steel bar penetrates through the side wall of the model box and then is vertically connected with a glass sheet with a flat surface, and the glass sheet is vertically connected with a displacement meter for measuring the displacement of the bearing pile body. However, the utility model has some defects in actual use, the thickness of the column shaft is limited when the column shaft is fixed, the utility model can not be adjusted according to the thickness of the column shaft, the field environment is bad, the displacement rod is easy to collide and bend during and after the installation, the test precision of the bearing displacement of the foundation pile is greatly affected, even the displacement can not be measured, and the practicability is lower, so the utility model provides a pile shaft displacement measuring device for a single pile vertical static load test, and the problems in the background technology are solved.

Disclosure of Invention

The utility model aims to solve the defects in the prior art, and provides a pile body displacement measuring device for a single pile vertical static load test.

In order to achieve the above purpose, the present utility model provides the following technical solutions: the pile body displacement measuring device for the single pile vertical static load test comprises an upper column body, wherein a rear anchor ear and a front anchor ear are respectively arranged on two side walls of the upper column body, a first bolt is arranged at the center of the front side wall of the front anchor ear, the rear end of the first bolt penetrates through the front side wall of the front anchor ear, a clamp is movably connected to the end of the first bolt, a loop bar is arranged at the center of the rear side wall of the rear anchor ear, the front end of the loop bar is fixedly connected to the center of the rear side wall of the rear anchor ear, a control storage module is arranged at the position, close to the front, of the center of the upper end face of the loop bar, a signal transmission module is fixedly connected to the lower end of the control storage module, respectively, of the upper end face of the loop bar, a displacement sensor is arranged at the center of the lower end face of the loop bar, an optical fiber is arranged at the position, and a signal connector is arranged on the lower end face of the displacement sensor;

through above-mentioned technical scheme, in the vertical static load experiment of single pile, through being provided with first bolt in the preceding lateral wall center department of preceding staple bolt, the front lateral wall of preceding staple bolt is run through to the rear end of first bolt, and tip swing joint has the clamp, make the clamp carry out the back and forth displacement through adjusting first bolt when using, make it can be applicable to less size pile body, conveniently adjust, the flexibility is better, simultaneously use with the spirit level cooperation, conveniently can detect the inclination when pile body displacement when the level is made level in the installation, be provided with displacement sensor in the lower terminal surface center department of loop bar simultaneously, can test the true displacement volume of foundation pile, measuring error reduces greatly, compared with prior art's displacement pole structure, do not need installation displacement pole and displacement sheath, and simple to operate, the cost is low.

Further, two ends of the rear anchor ear are respectively and fixedly connected with a first connecting block, two ends of the front anchor ear are respectively and fixedly connected with a second connecting block, and the two first connecting blocks are respectively and fixedly connected with the two second connecting blocks through a second bolt and a third bolt;

through above-mentioned technical scheme, be convenient for adjust the installation according to the thickness degree of pile body, application scope is wider.

Further, friction lines are respectively arranged on the side walls of the front anchor ear and the rear anchor ear;

through the technical scheme, stability during installation is improved, and the sliding is not easy to fall off.

Further, a level gauge is arranged at the rear end of one side wall of the loop bar;

through the technical scheme, the level after the installation is convenient to measure, so that the accuracy of measurement data is ensured.

Further, the lower end of the upper column body is fixedly connected with a bearing column, and the lower end of the bearing column is fixedly connected with a lower column body;

through the technical scheme, the overall stability is improved.

Further, the shape of the clamp is arc-shaped;

through above-mentioned technical scheme, laminating that can be better is on the lateral wall of pile body.

Further, the displacement sensor is electrically connected with the signal transmission module and the control storage module;

through the technical scheme, the measured information can be conveniently transmitted.

Further, the rear anchor ear and the two first connecting blocks and the front anchor ear and the two second connecting blocks are respectively cast integrally;

through above-mentioned technical scheme, intensity is higher long service life, and is not fragile.

The utility model has the following beneficial effects:

1. in the single pile vertical static load experiment, the first bolt is arranged at the center of the front side wall of the front anchor ear, the rear end of the first bolt penetrates through the front side wall of the front anchor ear, the end part of the first bolt is movably connected with the clamp, and the clamp is enabled to move forwards and backwards through adjusting the first bolt when in use, so that the single pile vertical static load experiment is applicable to a pile body with a smaller size, is convenient to adjust and better in flexibility, is matched with the level gauge for use, and is convenient to level when in installation, and the inclination angle of the pile body during displacement can be detected.

2. In the utility model, in a single pile vertical static load experiment, the displacement sensor is arranged at the center of the lower end surface of the loop bar, so that the real displacement of the foundation pile can be tested, the measurement error is greatly reduced, and compared with the displacement bar structure in the prior art, the displacement bar and the displacement sheath do not need to be installed, and the installation is convenient and the cost is low.

Drawings

FIG. 1 is a schematic diagram of the structure of an upper pile body of a pile body displacement measuring device for a single pile vertical static load test;

FIG. 2 is a front cross-sectional view of a pile body displacement measuring device for single pile vertical static load test according to the present utility model;

FIG. 3 is a top view of a connecting sleeve of a pile body displacement measuring device for a single pile vertical static load test;

fig. 4 is an enlarged view at a in fig. 1.

Legend description:

1. an upper column body; 2. a rear hoop; 3. a displacement sensor; 4. a clamp; 5. a first bolt; 6. a second bolt; 7. a signal transmission module; 8. a control storage module; 9. a lower column body; 10. a third bolt; 11. a front hoop; 12. a loop bar; 13. a bearing column; 14. a signal connector; 15. an optical fiber; 16. a first connection block; 17. a second connection block; 18. and (5) a level gauge.

Detailed Description

The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

Referring to fig. 1-4, one embodiment provided by the present utility model is: the utility model provides a pile body displacement measuring device for vertical static load test of single pile, including upper column body 1, be provided with back staple bolt 2 and preceding staple bolt 11 on the upper column body 1 both sides wall respectively, preceding lateral wall center department of preceding staple bolt 11 is provided with first bolt 5, the rear end of first bolt 5 runs through preceding lateral wall of preceding staple bolt 11, and tip swing joint has clamp 4, clamp 4's shape is circular-arc, back lateral wall center department of back staple bolt 2 is provided with loop bar 12, the front end fixed connection of loop bar 12 is in the back lateral wall center department of back staple bolt 2, the up end center of loop bar 12 is provided with control storage module 8 near front side department, the rear end of control storage module 8 is provided with signal transmission module 7, signal transmission module 7 and the lower extreme of control storage module 8 are fixed connection respectively on the up end of loop bar 12, the lower terminal surface center department of loop bar 12 is provided with displacement sensor 3, the lateral wall of displacement sensor 3 is provided with optic fibre 15 near upper end department, be provided with signal connector 14 on the lower terminal surface of displacement sensor 3.

The both ends of back staple bolt 2 are fixedly connected with first connecting block 16 respectively, the both ends of preceding staple bolt 11 are fixedly connected with second connecting block 17 respectively, pass through second bolt 6 and third bolt 10 fixed connection respectively between two first connecting blocks 16 and two second connecting blocks 17, the casting of integration is adopted respectively to back staple bolt 2 and two first connecting blocks 16 and preceding staple bolt 11 and two second connecting blocks 17, be provided with friction line on the lateral wall of preceding staple bolt 11 and back staple bolt 2 respectively, the lateral wall of loop bar 12 is provided with the spirit level 18 near rear end department, make clamp 4 carry out back and forth displacement through adjusting first bolt 5 when using, make it be applicable to the pile body of less size, the convenience is adjusted, the flexibility is better, simultaneously with spirit level 18 cooperation use, the inclination of ability detection pile body displacement when making level, the lower extreme fixedly connected with spandrel 13 of upper prop 1, the lower extreme of spandrel 13 is connected with down column 9, displacement sensor 3 and signal transmission module 7 and control storage module 8 take place the time control module through adjusting first bolt 5, the time control module is used for setting up the signal transmission module through setting for the time control module and setting for the signal transmission module 7 and the size change takes place, the time control module is used for the signal transmission module and the data is changed, the size is stored module is changed, the data is stored and the module is stored and the data is stored.

Working principle: the utility model relates to a pile body displacement measuring device for a single pile vertical static load test, when the single pile vertical static load test is carried out, a rear anchor ear 2 and a front anchor ear 11 are respectively arranged on two side walls of an upper pile body 1, a first bolt 5 is arranged at the center of the front side wall of the front anchor ear 11, the rear end of the first bolt 5 penetrates through the front side wall of the front anchor ear 11, a clamp 4 is movably connected to the end part, two ends of the rear anchor ear 2 are respectively fixedly connected with a first connecting block 16, two ends of the front anchor ear 11 are respectively fixedly connected with a second connecting block 17, the two first connecting blocks 16 and the two second connecting blocks 17 are respectively fixed through a second bolt 6 and a third bolt 10, the device is convenient to detach and install, the device is good in flexibility, can be suitable for a pile body with smaller size, is convenient to use, the practicability is better, fixed size data is set for a control storage module 8 when the pile body is subjected to sedimentation, the size inside the control storage module 8 is changed, information is fed back to a signal transmission module 7, and displacement data is transmitted to a control end through the signal transmission module 7, and the control end is convenient to observe in time.

Finally, it should be noted that: the foregoing description is only illustrative of the preferred embodiments of the present utility model, and although the present utility model has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that modifications may be made to the embodiments described, or equivalents may be substituted for elements thereof, and any modifications, equivalents, improvements or changes may be made without departing from the spirit and principles of the present utility model.

Claims

1. Pile body displacement measuring device for single pile vertical static load test, including last column (1), its characterized in that: the utility model provides a novel optical fiber displacement sensor, including upper column body (1), front column body (2), front anchor ear (11), front side wall center department of front anchor ear (11) is provided with first bolt (5), the front side wall of front anchor ear (11) is run through to the rear end of first bolt (5), and tip swing joint has clamp (4), rear side wall center department of rear anchor ear (2) is provided with loop bar (12), the front end fixed connection of loop bar (12) is in rear side wall center department of rear anchor ear (2), the up end center department of loop bar (12) is provided with control storage module (8) near the front side, the rear end of control storage module (8) is provided with signal transmission module (7), the lower extreme of signal transmission module (7) and control storage module (8) is fixed connection respectively on the up end of loop bar (12), the lower terminal surface center department of loop bar (12) is provided with displacement sensor (3), the lateral wall center department of displacement sensor (3) is provided with optical fiber (15), the terminal surface (14) is provided with displacement sensor.

2. The pile body displacement measuring device for single pile vertical static load test according to claim 1, wherein: the two ends of the rear anchor ear (2) are fixedly connected with first connecting blocks (16) respectively, the two ends of the front anchor ear (11) are fixedly connected with second connecting blocks (17) respectively, and the two first connecting blocks (16) and the two second connecting blocks (17) are fixedly connected through second bolts (6) and third bolts (10) respectively.

3. The pile body displacement measuring device for single pile vertical static load test according to claim 1, wherein: friction lines are respectively arranged on the side walls of the front anchor ear (11) and the rear anchor ear (2).

4. The pile body displacement measuring device for single pile vertical static load test according to claim 1, wherein: a level meter (18) is arranged at the rear end of one side wall of the loop bar (12).

5. The pile body displacement measuring device for single pile vertical static load test according to claim 1, wherein: the lower end of the upper column body (1) is fixedly connected with a bearing column (13), and the lower end of the bearing column (13) is fixedly connected with a lower column body (9).

6. The pile body displacement measuring device for single pile vertical static load test according to claim 1, wherein: the clamp (4) is arc-shaped.

7. The pile body displacement measuring device for single pile vertical static load test according to claim 1, wherein: the displacement sensor (3) is electrically connected with the signal transmission module (7) and the control storage module (8).

8. The pile body displacement measuring device for single pile vertical static load test according to claim 1, wherein: the rear anchor ear (2) and the two first connecting blocks (16) and the front anchor ear (11) and the two second connecting blocks (17) are respectively cast integrally.