CN219280779U - A pile body displacement measuring device for vertical static load test of single pile - Google Patents

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

A Pile Displacement Measuring Device for Vertical Static Load Test of Single Pile

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 technique

Single pile vertical static load test means that the vertical load is evenly transmitted to the foundation pile of the building, and the Q-s curve and s-lg of the static load test are obtained by measuring the settlement of the pile top of the single pile under different loads. t and other auxiliary curves, and then calculate parameters such as the characteristic value of the vertical compressive bearing capacity of a single pile according to the curves. The vast majority of static load tests provide the basis for engineering acceptance, and most of the static load tests that provide the basis for engineering acceptance can determine the maximum loading amount according to the design requirements, and do not carry out the destruction test, that is, the loading is terminated after the predetermined maximum test load is loaded. , and a measuring device is used to record displacement data during the measurement process.

The existing patent (publication number: CN113293809A) discloses a P-Y curve measuring device for the pseudo-static test of the interaction between processed sheet piles and soils, including the load-bearing pile body embedded in the test soil in the model box. Each test section of the pile body is connected with a smooth round steel bar perpendicular to its axis. One end of the smooth round steel bar is fixedly connected to the load-bearing pile body, and the other end penetrates the side wall of the model box and is vertically connected with a glass sheet with a flat surface. The sheet is vertically connected with a displacement gauge for measuring the displacement of the bearing pile. However, this utility model still has some shortcomings in actual use. The utility model has limited the thickness of the column body when the column body is fixed, and cannot be adjusted according to the thickness of the column body, and the site environment is harsh. Finally, the displacement rod is easy to bend, which greatly affects the test accuracy of the bearing displacement of the foundation pile and even cannot measure the displacement, so the practicability is low. Therefore, a pile body displacement measurement device for the vertical static load test of a single pile is proposed. To solve the problems raised in the background art above.

Utility model content

The purpose of this utility model is to solve the shortcomings in the prior art, and propose a pile body displacement measuring device for the vertical static load test of a single pile. In the vertical static load test of a single pile, through the previous The center of the front side wall of the hoop is provided with a first bolt, the rear end of the first bolt runs through the front side wall of the front hoop, and the end is movably connected with a hoop, and the hoop can be adjusted by adjusting the first bolt during use. The front and rear displacement makes it suitable for smaller-sized piles, which is convenient to adjust and has better flexibility. At the same time, it is used in conjunction with a spirit level to facilitate leveling during installation and to detect the inclination angle of the pile when it is displaced. A displacement sensor is arranged at the center of the lower end surface of the foundation pile, which can test the real displacement of the foundation pile, and the measurement error is greatly reduced. Compared with the displacement rod structure of the prior art, there is no need to install a displacement rod and a displacement sheath. Low.

In order to achieve the above purpose, the utility model provides the following technical solutions: a pile body displacement measuring device for the vertical static load test of a single pile, including an upper column body, and rear A hoop and a front hoop, the center of the front side wall of the front hoop is provided with a first bolt, the rear end of the first bolt runs through the front side wall of the front hoop, and the end is movably connected with a hoop, The center of the rear side wall of the rear hoop is provided with a sleeve rod, the front end of the sleeve rod is fixedly connected to the center of the rear side wall of the rear hoop, and the center of the upper end surface of the sleeve rod is provided with a control A storage module, the rear end of the control storage module is provided with a signal transmission module, the lower end of the signal transmission module and the control storage module are respectively fixedly connected to the upper end surface of the sleeve rod, and the center of the lower end surface of the sleeve rod is provided with A displacement sensor, the side wall of the displacement sensor is provided with an optical fiber near the upper end, and a signal connector is provided on the lower end surface of the displacement sensor;

Through the above technical scheme, in the single pile vertical static load test, the first bolt is arranged at the center of the front side wall of the front hoop, the rear end of the first bolt penetrates the front side wall of the front hoop, and the end There is a clamp in the movable connection. When in use, the clamp can be displaced back and forth by adjusting the first bolt, so that it can be applied to smaller-sized piles, which is easy to adjust and has better flexibility. At the same time, it is used in conjunction with a level to facilitate installation. When leveling, the inclination angle of the pile body can be detected at the same time. At the same time, a displacement sensor is arranged at the center of the lower end surface of the sleeve rod, which can test the real displacement of the foundation pile, and the measurement error is greatly reduced. Compared with the existing displacement rod Compared with the structure, there is no need to install a displacement rod and a displacement sheath, and the installation is convenient and the cost is low.

Further, the two ends of the rear hoop are respectively fixedly connected with a first connecting block, the two ends of the front hoop are respectively fixedly connected with a second connecting block, and the two first connecting blocks are connected with two second The blocks are fixedly connected by the second bolt and the third bolt respectively;

Through the above technical scheme, it is convenient to adjust and install according to the thickness of the pile body, and the application range is wider.

Further, the side walls of the front hoop and the rear hoop are respectively provided with friction lines;

Through the above technical proposal, the stability during installation is improved, and it is not easy to slip.

Further, a level is provided near the rear end of the side wall of the sleeve rod;

Through the above technical solution, it is convenient to measure the level after installation, so as to ensure the accuracy of the measurement data.

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

Through the above technical solution, the overall stability is improved.

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

Through the above technical solution, it can be better fit on the side wall of the pile body.

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

Through the above technical solution, it is convenient to transmit measurement information.

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

Through the above technical solution, the strength is higher, the service life is longer, and it is not easy to be damaged.

The utility model has the following beneficial effects:

1. In the utility model, in the single pile vertical static load test, the first bolt is arranged at the center of the front side wall of the front hoop, and the rear end of the first bolt penetrates the front side wall of the front hoop, and The end is movably connected with a clamp. When in use, adjust the first bolt to make the clamp move forward and backward, so that it can be applied to a smaller-sized pile body, which is easy to adjust and has better flexibility. At the same time, it is used in conjunction with a level for convenience When leveling during installation, it can detect the inclination angle of the pile body when it is displaced.

2. In the utility model, in the vertical static load test of a single pile, a displacement sensor is provided at the center of the lower end surface of the sleeve rod, so that the real displacement of the foundation pile can be tested, and the measurement error is greatly reduced, which is different from the prior art. Compared with the displacement rod structure, it does not need to install a displacement rod and a displacement sheath, which is convenient for installation and low in cost.

Description of drawings

Fig. 1 is a structural representation of the upper pile body of a pile body displacement measuring device for a single pile vertical static load test proposed by the utility model;

Fig. 2 is a front sectional view of a pile body displacement measuring device for a single pile vertical static load test proposed by the 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 proposed by the utility model;

Fig. 4 is an enlarged view of A in Fig. 1 .

illustration:

1. Upper column body; 2. Rear hoop; 3. Displacement sensor; 4. Clamp; 5. First bolt; 6. Second bolt; 7. Signal transmission module; 8. Control storage module; 9. Lower column Body; 10, third bolt; 11, front hoop; 12, sleeve rod; 13, load-bearing column; 14, signal connector; 15, optical fiber; 16, first connecting block; 17, second connecting block; 18, spirit level .

Detailed ways

The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of them. example. Based on the embodiments of the present utility model, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the scope of protection of the present utility model.

Referring to Figures 1-4, an embodiment provided by the utility model: a pile body displacement measurement device for a single pile vertical static load test, including an upper column body 1, and the two side walls of the upper column body 1 are respectively arranged There are a rear hoop 2 and a front hoop 11, the center of the front side wall of the front hoop 11 is provided with a first bolt 5, the rear end of the first bolt 5 runs through the front side wall of the front hoop 11, and the ends are flexibly connected There is a clamp 4, the shape of the clamp 4 is arc-shaped, the center of the rear side wall of the rear hoop 2 is provided with a sleeve rod 12, and the front end of the sleeve rod 12 is fixedly connected to the center of the rear side wall of the rear hoop 2, A control storage module 8 is arranged on the front side of the center of the upper end surface of the sleeve rod 12, and the rear end of the control storage module 8 is provided with a signal transmission module 7, and the lower end of the signal transmission module 7 and the control storage module 8 are fixedly connected to the sleeve rod 12 respectively. On the upper end face of the sleeve rod 12, a displacement sensor 3 is provided at the center of the lower end face, the side wall of the displacement sensor 3 is provided with an optical fiber 15 near the upper end, and a signal connector 14 is provided on the lower end face of the displacement sensor 3.

The two ends of the rear hoop 2 are respectively fixedly connected with the first connecting block 16, and the two ends of the front hoop 11 are respectively fixedly connected with the second connecting block 17, between the two first connecting blocks 16 and the two second connecting blocks 17 The second bolts 6 and the third bolts 10 are respectively fixedly connected, the rear hoop 2 and the two first connecting blocks 16 and the front hoop 11 and the two second connecting blocks 17 are respectively integrally cast, and the front hoop 11 and the The side walls of the rear hoop 2 are respectively provided with friction patterns, and the side wall of the sleeve rod 12 is provided with a level 18 near the rear end. When in use, the hoop 4 is displaced back and forth by adjusting the first bolt 5, so that it can It is suitable for smaller-sized piles, which is convenient to adjust and has better flexibility. At the same time, it is used in conjunction with the spirit level 18, which is convenient for leveling during installation and can detect the inclination angle of the pile body when it is displaced. The lower end of the upper column body 1 is fixedly connected with a The load-bearing column 13, the lower end of the load-bearing column 13 is fixedly connected with the lower column body 9, the displacement sensor 3 is electrically connected with the signal transmission module 7 and the control storage module 8, and by setting fixed size data for the control storage module 8 during use, When the pile body subsides, the internal size of the control storage module 8 changes, and the information is fed back to the signal transmission module 7, and then the displacement data is transmitted to the control terminal through the signal transmission module 7.

Working principle: the utility model is a pile body displacement measuring device for the vertical static load test of a single pile. The hoop 2 and the front hoop 11, the center of the front side wall of the front hoop 11 is provided with a first bolt 5, the rear end of the first bolt 5 runs through the front side wall of the front hoop 11, and the end is movably connected with a clip The hoop 4 and the two ends of the rear hoop 2 are respectively fixedly connected with a first connecting block 16, and the two ends of the front hoop 11 are respectively fixedly connected with a second connecting block 17, two first connecting blocks 16 and two second connecting blocks 17 are respectively fixed by the second bolt 6 and the third bolt 10, which is convenient for disassembly and installation, and has good flexibility, can be applied to smaller pile bodies, is convenient to use, and has better practicality. Fixed size data, when the pile body subsides, the internal size of the control storage module 8 changes, and the information is fed back to the signal transmission module 7, and then the displacement data is transmitted to the control terminal through the signal transmission module 7, which is convenient for timely observation.

Finally, it should be noted that: the above is only a preferred embodiment of the utility model, and is not intended to limit the utility model, although the utility model has been described in detail with reference to the foregoing embodiments, for those skilled in the art , it can still modify the technical solutions recorded in the foregoing embodiments, or perform equivalent replacements on some of the technical features. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present utility model, All should be included within the protection scope of the present utility model.

Claims (8)

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.

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