A high-strain penetration degree measurement system

Abstract

The utility model relates to a high-strain penetration degree measurement system, which comprises: a first liquid storage tank, a data automatic collector, a second liquid storage tank, a first liquid level transmitter, a third liquid storage tank, and a second liquid level transmitter. The data automatic collector is installed in the first liquid storage tank; the second liquid storage tank is fixedly installed at the bottom of the base pile; the first liquid level transmitter is installed in the second liquid storage tank, and the signal line of the first liquid level transmitter is connected to the data automatic collector in the first liquid storage tank through a first connecting pipeline; the third liquid storage tank is fixedly installed at the bottom of the test pile; the second liquid level transmitter is installed in the third liquid storage tank, and the signal line of the second liquid level transmitter is connected to the automatic data automatic collector in the third liquid storage tank through a second connecting pipeline, the second liquid storage tank, and the first connecting pipeline. The utility model realizes the automatic acquisition of high-strain penetration degree data; greatly improves the measurement accuracy; and can perform continuous measurement.

Description

Technical Field

[0001] The utility model belongs to the technical field of automatic measurement, in particular to a high-strain penetration measurement system. Background Art

[0002] The existing high-strain penetration measurement usually uses a level and a level rod. The level is used to manually measure the elevation of the foundation pile before and after the high strain, and then the penetration is calculated. For major projects with complex on-site construction environments and a large number of foundation piles to be tested, this detection technology will consume a lot of manpower and material resources. At the same time, this manual monitoring technology is greatly affected by the environment, and the manual measurement error is large.

[0003] CN220117309U discloses a high-strain method penetration test device for foundation piles, comprising a belt body and a measuring rod, a sensor module and a locking member arranged on the belt body, wherein the belt body is horizontally wrapped around the pile to be tested and locked by the locking member, the measuring rod is fixed on the belt body and extends upward from the top of the pile to be tested, and is used to measure the penetration of the pile to be tested by a level, the sensor module comprises an acceleration sensor and a strain force sensor, when the belt body is horizontally wrapped around the pile to be tested, the acceleration sensor and the strain force sensor are located on the side of the pile to be tested, the acceleration sensor is used to measure the acceleration change of the pile to be tested, and the strain force sensor is used to measure the strain information of the pile to be tested. The belt body can be nylon or high-strength polyester webbing, which is anti-corrosion, waterproof, wear-resistant and durable. The acceleration sensor and the strain sensor mainly receive stress wave signals of the foundation pile under the impact of the top hammer, including upgoing wave signals and downgoing wave signals, and analyze the integrity and bearing capacity through the traveling wave signals.

[0004] The disadvantage of this patent is that it still requires a level to manually measure the penetration depth of the pile to be tested, and it does not realize automatic measurement and collection of the penetration depth, and is greatly affected by external interference. Utility Model Content

[0005] The utility model aims to overcome the deficiencies of the prior art and provide a high strain penetration measurement system, which greatly improves the efficiency and accuracy of high strain penetration measurement.

[0006] The technical solution adopted by the utility model to solve the technical problem is:

[0007] A high strain penetration measurement system comprises: a first liquid storage tank, an automatic data collector, a second liquid storage tank, a first liquid level transmitter, a third liquid storage tank, and a second liquid level transmitter, wherein the automatic data collector is installed in the first liquid storage tank; the second liquid storage tank is fixedly mounted at the bottom of a foundation pile; the first liquid level transmitter is installed in the second liquid storage tank, and a signal line of the first liquid level transmitter is connected to the automatic data collector via a first connecting pipeline to the first liquid storage tank; the third liquid storage tank is fixedly mounted at the bottom of a detection pile; the second liquid level transmitter is installed in the third liquid storage tank, and a signal line of the second liquid level transmitter is connected to the automatic data collector via a second connecting pipeline, the second liquid storage tank, and the first connecting pipeline to the third liquid storage tank.

[0008] Furthermore, the automatic data collector is equipped with a charging device.

[0009] Furthermore, the first liquid level transmitter and the second liquid level transmitter are powered by the automatic data collector through pipelines.

[0010] Furthermore, the first liquid storage tank has an opening at the top, and the bottom is connected to the top of the second liquid storage tank via a first connecting pipeline.

[0011] Furthermore, the automatic data collector is connected to a background control system via wireless.

[0012] Furthermore, the first liquid level transmitter and the second liquid level transmitter are both submersible liquid level transmitters.

[0013] The advantages and positive effects of the utility model are:

[0014] The utility model arranges an automatic penetration measurement device on the detection pile, and can automatically collect the elevation monitoring signal through the automatic data collector and transmit it to the background software, which automatically calculates the penetration. It can continuously carry out high-strain tests on multiple pile foundations, realize automatic high-strain penetration data collection, greatly improve the measurement accuracy, and can continuously measure and save a lot of manpower and material resources. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 This is a schematic diagram of the structure of the high strain penetration measurement system of the utility model. DETAILED DESCRIPTION

[0016] The present invention will be further described in detail below through specific embodiments. The following embodiments are merely descriptive and not restrictive, and the protection scope of the present invention cannot be limited by them.

[0017] A high-strain penetration measurement system comprises: an automatic data collector 2, two liquid level transmitters, a connecting pipeline, and three liquid storage tanks.

[0018] The second liquid level transmitter 8 is located in the third liquid storage tank 9, and the third liquid storage tank 9 is fixed to the bottom of the detection pile 10 with screws. The signal line of the second liquid level transmitter 8 is connected to the automatic data collector 2 through the second connecting pipeline 7, the second liquid storage tank 6, and the first connecting pipeline 4 to the third liquid storage tank 9; the first liquid level transmitter 5 is located in the second liquid storage tank 6, and the second liquid storage tank 6 is fixed to the bottom of the foundation pile 1 with screws. The signal line of the first liquid level transmitter 5 is connected to the automatic data collector 2 through the first connecting pipeline 4 to the first liquid storage tank 3.

[0019] The automatic data collector 2 has a charging device, which is powered by a 220V power supply, and the first liquid level transmitter 5 and the second liquid level transmitter 8 are powered by the automatic data collector 2 through the line pipe. Preferably, the first liquid level transmitter 5 and the second liquid level transmitter 8 are CYW11 universal submersible liquid level transmitters.

[0020] Working principle of this utility model:

[0021] The pressure formula of the liquid transmitter facing the liquid surface is: Ρ=ρgh+P o Where:

[0022] P is the pressure on the liquid surface of the liquid transmitter; ρ is the density of the measured liquid; g is the gravitational acceleration; P o is the atmospheric pressure above the liquid surface; h is the depth of the liquid transmitter immersed in the liquid.

[0023] When the liquid transmitter is put into a certain depth in the measured liquid, the pressure of the measured medium is introduced into the positive pressure chamber of the liquid transmitter, and the atmospheric pressure P on the liquid surface is o Connected to the negative pressure chamber of the liquid transmitter to offset the P on the front of the liquid transmitter o , so that the liquid transmitter measures the pressure: ρgh. Obviously, by measuring the pressure P, the liquid level depth can be obtained.

[0024] Before the high strain test, the data automatic collector 2 automatically measures the liquid level depth h1 of the first liquid level transmitter 5 and the liquid level depth h2 of the second liquid level transmitter 8; after the high strain test, the data automatic collector 2 automatically measures the liquid level depth h1' of the first liquid level transmitter 5 and the liquid level depth h2' of the second liquid level transmitter 8. High strain penetration △h = (h1'-h2')-(h1--h2).

[0025] Working mode: Before and after the high strain test, the background software issues a water level measurement instruction to the data automatic collector 2 through wireless transmission, and the data automatic collector 2 respectively controls the first liquid level transmitter 5 and the second liquid level transmitter 8. The data automatic collector 2 then transmits the signals of each liquid transmitter to the background calculation software.

[0026] The method of using this high strain penetration measurement system is:

[0027] First, a second liquid level transmitter 8 is placed in the third liquid storage tank 9, and the pipelines (liquid pipe, gas pipe, communication line) are connected to the fixed automatic data collector 2 through the second connecting pipeline 7, the second liquid storage tank 6, and the first connecting pipeline 4 to the first liquid storage tank 3; the first liquid level transmitter 5 is placed in the second liquid storage tank 6, and the pipelines (liquid pipe, gas pipe, communication line) are connected to the fixed automatic data collector 2 through the first connecting pipeline 4 to the first liquid storage tank 3; each liquid storage tank is connected to the connecting pipeline and closed.

[0028] Before high strain detection, the third liquid storage tank 9 is fixed to the lower part of the detection pile 10 exposed above the ground by screws, the second liquid storage tank 6 is fixed to the lower part of the adjacent reference pile exposed above the ground by screws, and the first liquid storage tank 3 (upper opening) is fixed to the reference pile above the second liquid storage tank 6 by screws.

[0029] Use a 220V power supply to charge the automatic data collector 2 and debug the device. After debugging, seal all joints of the device with sealant.

[0030] Before the high strain test, the background software sends a signal to the data automatic collector 2 through wireless transmission to collect data from the liquid level transmitter, and then the data automatic collector 2 transmits the data back to the background software for penetration calculation.

[0031] After the test of one pile is completed, the high strain test of the remaining foundation piles 1 can be carried out continuously. It is only necessary to remove the third liquid storage tank 9 and fix it to the next test foundation pile 1.

[0032] The above is only a preferred embodiment of the present invention. It should be pointed out that a person skilled in the art can make several modifications and improvements without departing from the concept of the present invention, which all fall within the scope of protection of the present invention.

Claims

1. A high strain penetration measurement system, characterized in that: include: A first liquid storage tank (3); An automatic data collector (2), wherein the automatic data collector (2) is installed in the first liquid storage tank (3); A second liquid storage tank (6), wherein the second liquid storage tank (6) is fixedly mounted at the bottom of the foundation pile (1); A first liquid level transmitter (5), the first liquid level transmitter (5) being installed in the second liquid storage tank (6), and a signal line of the first liquid level transmitter (5) being connected to the automatic data collector (2) via a first connecting pipeline (4) to the first liquid storage tank (3); A third liquid storage tank (9), wherein the third liquid storage tank (9) is fixedly mounted at the bottom of the detection pile (10); A second liquid level transmitter (8), the second liquid level transmitter (8) is installed in a third liquid storage tank (9), and a signal line of the second liquid level transmitter (8) is connected to the automatic data collector (2) through a second connecting pipeline (7), the second liquid storage tank (6), and the first connecting pipeline (4) to the third liquid storage tank (9).

2. The high strain penetration measurement system according to claim 1, characterized in that: The automatic data collector (2) is equipped with a charging device.

3. The high strain penetration measurement system according to claim 2, characterized in that: The first liquid level transmitter (5) and the second liquid level transmitter (8) are powered by the automatic data collector (2) through pipelines.

4. The high strain penetration measurement system according to claim 3, characterized in that: The first liquid storage tank (3) has an open top, and the bottom is connected to the top of the second liquid storage tank (6) via a first connecting pipeline (4).

5. The high strain penetration measurement system according to claim 4, characterized in that: The automatic data collector (2) is connected to the background control system via wireless.

6. The high strain penetration measurement system according to claim 5, characterized in that: The first liquid level transmitter (5) and the second liquid level transmitter (8) are both immersion type liquid level transmitters.

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