Cast-in-place concrete vibration quality evaluation marking method and device

Abstract

The invention provides a concrete vibration quality evaluation marking method and device, the device comprises a vibration module, a state identification module, a control module and a pigment spraying module, the pigment spraying module is provided with a pigment storage tank and a pigment pressure pump, the pigment storage tank is connected with the vibration module through a pigment conveying pipe, and the pigment pressure pump is connected with the vibration module through a pigment conveying pipe. A control module is connected between the pigment pressure pump and the vibrating module; the vibrating module comprises a vibrating rod and a hollow handheld hose located at the rear end of the vibrating rod. The state recognition module is located at the front end of the vibrating module and used for recognizing whether the vibrating module is located in the concrete or not, when the pigment is sprayed and what color the pigment is sprayed; the control module evaluates the vibration quality according to a measured value and a time parameter of a displacement sensor in the state recognition module, determines which color is sprayed, and outputs a control instruction to the pigment pressure pump for pigment spraying; and the pigment spraying module is used for spraying pigment according to different vibrating states of the vibrating rod on the concrete.

Description

Technical Field

[0001] This invention belongs to the technical field of vibration devices for cast-in-place concrete construction, and specifically relates to a method and device for marking and evaluating the quality of concrete vibration. Background Technology

[0002] To address the issue of air bubbles introduced during cast-in-place concrete pouring, vibration is now widely used to remove these air bubbles, creating a dense concrete chamber, increasing its strength, and ensuring the quality of concrete components. Concrete vibration has strict technical requirements: quick insertion and slow withdrawal, up-and-down movement, controlled vibration time, thorough air removal, and surface slurry formation are crucial to avoid under-vibration, insufficient vibration, and over-vibration. During vibration, the vibrator should generally not penetrate more than 2 / 3 to 3 / 4 of its length into the concrete. When pouring in layers, the vibrator should penetrate 5cm to 10cm into the lower layer of concrete. The spacing between insertion points should generally not exceed 1.5 times the radius of vibration action. The principle of "quick insertion and slow withdrawal" must be followed during concrete vibration.

[0003] Using vibration to remove air bubbles creates a dense concrete chamber, increasing its strength and ensuring the quality of concrete components. Concrete vibration has strict technical requirements: quick insertion and slow withdrawal, up-and-down movement, controlled vibration time, complete air removal, and surface slurry formation are essential to avoid under-vibration, excessive vibration, or missed vibration. During vibration, the vibrator should generally not penetrate more than 2 / 3 to 3 / 4 of its length into the concrete. When pouring in layers, it should penetrate 5cm to 10cm into the lower layer of concrete. The spacing between insertion points should generally not exceed 1.5 times the radius of vibration action. The principle of "quick insertion and slow withdrawal" must be followed during concrete vibration.

[0004] Existing vibration monitoring technologies require external monitoring devices. Vibration status monitoring results are transmitted to a database, and the vibration quality is displayed on the system platform. The system can also provide feedback to vibration workers, offering guidance. However, this method cannot visually represent the vibration results on the structural surface, making it difficult for managers to quickly and intuitively grasp the vibration effect in the pouring area. Furthermore, the deployment of numerous external devices increases costs and workload.

[0005] Therefore, how to provide a method and device for evaluating and marking the quality of concrete vibration is a technical problem that urgently needs to be solved by those skilled in the art. Summary of the Invention

[0006] This invention provides a method and device for evaluating and marking the quality of concrete vibration, aiming to solve the problems of inefficient and inaccurate display of the vibration effect of cast-in-place concrete and the inability of construction managers to obtain vibration quality in a timely and convenient manner.

[0007] The technical solution of the concrete vibration quality assessment and marking method and device of the present invention is as follows:

[0008] A concrete vibration quality assessment and marking device includes a vibration module, a status recognition module, a control module, and a pigment spraying module. The pigment spraying module is equipped with a pigment storage tank and a pigment pressurizing pump. The pigment storage tank stores pigments of various colors. The pigment storage tank is connected to the vibration module through a pigment delivery pipe. The pigment pressurizing pump and the vibration module are connected to the control module through a signal line.

[0009] The vibration module includes a vibrating rod and a handheld hose located at the rear end of the vibrating rod. The handheld hose is a hollow tube used to house the signal line, the pigment delivery tube, and the power supply line of the vibrating rod.

[0010] The status recognition module is located at the front end of the vibration module. The status recognition module is used to identify whether the vibration module is in concrete, when to spray pigment, and what color of pigment to spray.

[0011] The control module evaluates the vibration quality based on the displacement sensor measurement value and time parameters in the status recognition module, determines the color to be sprayed, and outputs control commands to the pigment pressurization pump to spray the pigment.

[0012] The pigment spraying module is used to spray pigments of corresponding colors according to the different vibration states of the concrete by the vibrator.

[0013] Furthermore, the pigment storage tank stores three types of pigments: green, yellow, and red.

[0014] Furthermore, the state recognition module is located at the front end of the vibration module. The state recognition module includes a displacement sensor, a force transmission rod, a guide wheel, a spring, a sealing ring, and a metal cover. The force transmission rod is connected to the metal cover and the displacement sensor respectively. The metal cover is connected to the vibration module through the spring. The spring can accommodate the deformation of the metal cover in different states. The movement of the metal cover drives the movement of the force transmission rod, thereby allowing the displacement sensor to reflect the movement state of the metal cover in real time. The sealing ring has a contraction function, which can accommodate the up and down movement of the metal cover while preventing concrete from entering the state recognition module.

[0015] A method for marking and assessing the vibration quality of cast-in-place concrete, using the aforementioned marking and assessing device for the vibration quality of cast-in-place concrete, the method comprising the following steps:

[0016] Step S1, Concrete vibration quality assessment method: Let the reasonable vibration time of concrete be T, and the maximum allowable vibration time be T_0. max The reasonable time and maximum allowable vibration time vary depending on the concrete specifications. Therefore, the minimum time for pulling out the concrete vibration module is set to T. min The effective vibration time for concrete is t1-t0; the time for removing the vibrator is t3-t2.

[0017] When the following conditions are met simultaneously, it is qualified for vibration compaction, and green pigment is sprayed;

[0018] T ≤ (t1 - t0) ≤ T max , T min ≤ (t3 - t2);

[0019] When the following conditions are met, it indicates that the pulling-out speed of the vibrating rod is too fast, and yellow pigment is sprayed;

[0020] (t3 - t2) ≤ T min ;

[0021] When the following conditions are met, it indicates over-vibration compaction, and red pigment is sprayed;

[0022] T max ≤ (t1 - t0);

[0023] When the following conditions are met, it indicates under-vibration compaction, and yellow pigment is sprayed;

[0024] (t1 - t0) ≤ T;

[0025] At the position where the vibrating rod is not inserted, no pigment is sprayed, and the original color of the concrete is shown;

[0026] Step S2, method for determining the color spraying timing: According to the whole process of vibrating rod compaction, the measured values shown by the displacement sensor are L0, L1, L2, and L3 respectively; establish a corresponding relationship diagram between the displacement of the metal cover and the compaction time during the compaction process. When the measured value of the displacement sensor returns to the value before insertion, it indicates that the vibrating rod is pulled out, and the corresponding color pigment is sprayed at this time.

[0027] Furthermore, in the step S2, the whole compaction process includes three stages: the insertion process, effective compaction, and pulling-out process, and its timing mechanism is as follows:

[0028] Before the vibrating device is inserted into the concrete, the metal cover is in a suspended state. Under the action of gravity, the spring elongates, and the force transmission rod drives the displacement gauge to elongate. Measure the elongation of the displacement gauge at this time as L0;

[0029] During the process of inserting the vibrating device into the concrete, the metal cover is supported by the concrete, the length of the spring shortens, the position of the force transmission rod moves upward, the relative distance from the vibrating device decreases, the elongation of the displacement gauge becomes smaller, and the measured value changes to L1. At this time: L1 < L0; record the time t0 when the elongation of the displacement gauge becomes smaller;

[0030] After the vibrating device reaches its maximum position, it continues to vibrate. As the concrete liquefies under vibration, the concrete support force decreases. The metal cover moves downward relative to the vibrating device, and the displacement gauge reading increases to L2. Although the concrete liquefies, it still supports the metal cover, but the support is less than that of unvibrated concrete. Therefore, L1 < L2 < L0. Record the time t1 at this time.

[0031] When the vibrating device starts to be pulled out, the metal cover moves upward with the vibrating device during the pulling process. Due to the upward acceleration and the frictional resistance of the concrete, the distance between the metal cover and the vibrating device increases. The displacement sensor measures L3. At this time: L1 < L2 < L0 < L3. When the displacement sensor measurement suddenly increases, it indicates that the vibrating device has started to be pulled out. Record the time t2 at this time.

[0032] After the vibrating device is pulled out of the concrete, the resistance of the concrete to the metal cover disappears. Under the action of the spring, the relative distance between the metal cover and the vibrating device decreases, and the displacement of the metal cover relative to the vibrating device returns to the state before insertion. That is, the displacement sensor measurement value is L0, and the time at this moment is recorded as t3.

[0033] The concrete vibration quality assessment and marking method and device of the present invention have the following technical effects:

[0034] The concrete vibration quality assessment marking device and method of the present invention can accurately sense the concrete vibration process, make the concrete vibration quality assessment more accurate, and intuitively reflect the vibration status on the concrete surface, which helps construction managers to quickly find vibration quality problems and make timely rectifications, thus significantly improving the construction quality of concrete vibration. Attached Figure Description

[0035] Figure 1 This is a schematic diagram of the structure of a concrete vibration quality assessment marking device according to an embodiment of the present invention;

[0036] Figure 2 yes Figure 1 AA section view;

[0037] Figure 3 This is a schematic diagram of the state sensing module in a concrete vibration quality assessment marking device according to an embodiment of the present invention;

[0038] Figures 4 to 8 This is a schematic diagram of the timing mechanism of step S2 in the concrete vibration quality assessment and marking method in one embodiment of the present invention;

[0039] Figure 9 This is a graph showing the relationship between the displacement of the metal cover and the vibration time during the vibration process in a concrete vibration quality assessment marking method according to an embodiment of the present invention.

[0040] In the picture:

[0041] 1-Vibration module, 2-Control module, 3-Pigment storage tank, 4-Pigment pressurization pump, 5-Pigment delivery pipe, 6-Signal line, 7-Handheld hose, 8-Displacement sensor, 9-Force transmission rod, 10-Guide wheel, 11-Spring, 12-Sealing ring, 13-Metal cover, 14-Vibration rod. Detailed Implementation

[0042] The concrete vibration quality assessment and marking method and apparatus of the present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments. The advantages and features of the present invention will become clearer from the following description and claims. It should be noted that the drawings are all in a very simplified form and use non-precise proportions, and are only used to facilitate and clarify the illustration of the embodiments of the present invention.

[0043] Example 1:

[0044] Principle: Different colors are used on the concrete surface to represent different vibration effects. The color is sprayed onto the concrete surface by the vibrator when it is removed after vibration. Each colored area is roughly the size of the area affected by the vibration. Vibration workers and construction managers judge whether the vibration is adequate and whether there is any missed vibration based on the color of the concrete surface. In terms of color representation, green represents adequate vibration, yellow represents under-vibration, and red represents over-vibration. Combined with the original color of the concrete in the missed areas, these four colors are used to mark the concrete vibration effect.

[0045] refer to Figure 1 The structural composition of the concrete vibration quality assessment and marking device of the present invention will be described in detail.

[0046] Please continue to refer to this. Figure 1 This embodiment of a concrete vibration quality assessment marking device includes a vibration module 1, a status recognition module, a control module 2, and a pigment spraying module. The pigment spraying module is equipped with a pigment storage tank 3 and a pigment pressurizing pump 4. The pigment storage tank 3 stores pigments of various colors. The pigment storage tank 3 is connected to the vibration module 1 through a pigment delivery pipe 5. The pigment pressurizing pump 4 and the vibration module 1 are connected to the control module 2 through a signal line 6.

[0047] The vibration module 1 includes a vibrating rod 14 and a handheld hose 7 located at the rear end of the vibrating rod. The handheld hose 7 is a hollow tube used to house the signal line 6, the pigment delivery tube 5, and the power supply line of the vibrating rod 14.

[0048] The status recognition module is located at the front end of the vibration module 1. The status recognition module is used to identify whether the vibration module 1 is in concrete, when to spray pigment, and what color pigment to spray.

[0049] The control module 2 evaluates the vibration compaction quality based on the measurement value of the displacement sensor and the time parameter in the state recognition module, and simultaneously determines which color to spray, and outputs a control instruction to the pigment pressure pump 4 to perform pigment spraying.

[0050] The pigment spraying module is used to spray pigments of corresponding colors according to different vibration compaction states of the vibrating rod 14 on the concrete.

[0051] In this embodiment, more preferably, the pigment storage tank 3 stores three pigments: green, yellow, and red. In this embodiment, more preferably, the state recognition module is located at the front end of the vibration module 1. The state recognition module includes a displacement sensor 8, a force transmission rod 9, a guide wheel 10, a spring 11, a sealing ring 12, and a metal cover 13. The force transmission rod 9 is respectively connected to the metal cover 13 and the displacement sensor 8. The metal cover 13 is connected to the vibration module 1 through the spring 11. The spring 11 can satisfy the deformation of the metal cover 13 in different states. The movement of the metal cover 13 drives the movement of the force transmission rod 9, so as to react the movement state of the metal cover 13 in real time through the displacement sensor 8. The sealing ring 12 has a contraction function, which can satisfy the up and down movement of the metal cover 13 and prevent concrete from entering the state sensing module at the same time.

[0052] Please continue to refer to Figures 1 to 9 , a method for evaluating and marking the vibration compaction quality of cast-in-place concrete, using the device for evaluating and marking the vibration compaction quality of cast-in-place concrete, the method includes the following steps:

[0053] Step S1, a method for evaluating the vibration compaction quality of concrete: Let the reasonable vibration compaction time of concrete be T, and the maximum allowable vibration compaction time be T max , according to different concrete specifications, the reasonable time and the maximum allowable vibration compaction time are different. Set the minimum pulling-out time of the vibration compaction module to be T min , the effective vibration compaction time length of concrete is: t1 - t0; the pulling-out time length of the vibration device is: t3 - t2;

[0054] When the following conditions are met simultaneously, it is qualified for vibration compaction, and green pigment is sprayed;

[0055] T ≤ (t1 - t0) ≤ T max , T min ≤ (t3 - t2);

[0056] When the following conditions are met, it means that the pulling-out speed of the vibrating rod 14 is too fast, and yellow pigment is sprayed;

[0057] (t3 - t2) ≤ T min ;

[0058] When the following conditions are met, it means over-vibration, and red pigment is sprayed;

[0059] T max≤(t1-t0);

[0060] When the following conditions are met, it indicates under-vibration, and yellow pigment should be sprayed;

[0061] (t1-t0)≤T;

[0062] Where the vibrator was not inserted, no color was sprayed, revealing the original color of the concrete.

[0063] Step S2, method for determining the timing of color spraying: According to the entire process of vibration of the vibrator 14, the displacement sensor 8 displays the measured values ​​as L0, L1, L2, and L3 respectively; establish a relationship diagram between the displacement of the metal cover 13 and the vibration time during the vibration process. When the measured value of the displacement sensor 8 returns to the value before insertion, it indicates that the vibrator 14 has been pulled out, and the corresponding color pigment is sprayed at this time.

[0064] Furthermore, in step S2, the entire vibration process includes three stages: the insertion process (from the start of insertion to the insertion point), effective vibration (from the insertion point to the start of withdrawal), and the withdrawal process (withdrawing the concrete from the deepest position). The timing mechanism is as follows:

[0065] Before the vibrating device is inserted into the concrete, the metal cover 13 is suspended in the air. Under the action of gravity, the spring 11 extends, and the force transmission rod 9 drives the displacement gauge to extend. The extension of the displacement gauge at this time is measured to be L0.

[0066] During the process of inserting the vibrating device into the concrete, the metal cover 13 is supported by the concrete, the length of the spring 11 shortens, the position of the force transmission rod 9 moves upward, the relative distance with the vibrating device decreases, the elongation of the displacement gauge decreases, and the measured value becomes L1. At this time: L1 < L0; when the elongation of the displacement gauge becomes smaller, record the time t0 at this moment.

[0067] After the vibrating device reaches its maximum position, it continues to vibrate. As the concrete liquefies due to vibration, the concrete support force decreases. The metal cover 13 moves downward relative to the vibrating device, and the displacement gauge measurement value increases to L2. Although the concrete liquefies, it still has a supporting effect on the metal cover 13, but the supporting effect is less than that of unvibrated concrete. Therefore, L1 < L2 < L0. Record the time t1 at this time.

[0068] When the vibrating device starts to be pulled out, the metal cover 13 moves upward with the vibrating device during the pulling process. Due to the upward acceleration and the frictional resistance of the concrete, the distance between the metal cover 13 and the vibrating device increases. The displacement sensor 8 measures L3. At this time: L1 < L2 < L0 < L3. When the displacement sensor 8 suddenly increases, it indicates that the vibrating device has started to be pulled out. Record the time t2 at this time.

[0069] After the vibrating device is pulled out of the concrete, the resistance of the concrete to the metal cover 13 disappears. Under the action of the spring 11, the relative distance between the metal cover 13 and the vibrating device decreases. The displacement of the metal cover 13 relative to the vibrating device returns to the state before insertion. That is, the displacement sensor 8 measures L0. The time at this moment is recorded as t3.

[0070] The above description is merely a description of preferred embodiments of the present invention and is not intended to limit the scope of the present invention in any way. Any changes or modifications made by those skilled in the art based on the above disclosure shall fall within the protection scope of the claims.

Claims

1. A concrete vibration quality assessment and marking device, characterized in that, It includes a vibration module, a state recognition module, a control module, and a pigment spraying module. The pigment spraying module is provided with a pigment storage tank and a pigment pressure pump. The pigment storage tank stores multiple different colors of pigments. The pigment storage tank is connected to the vibration module through a pigment delivery pipe. The pigment pressure pump and the vibration module are connected to the control module through a signal line. The vibration module includes a vibration rod and a hand-held hose located at the rear end of the vibration rod. The hand-held hose is a hollow pipe for accommodating the signal line, the pigment delivery pipe, and the power supply line of the vibration rod. The state recognition module is located at the front end of the vibration module. The state recognition module is used to identify whether the vibration module is in the concrete, when to spray pigments, and what color of pigments to spray. The control module evaluates the vibration quality according to the measured values of the displacement sensor and the time parameters in the state recognition module, and at the same time determines what color to spray, and outputs a control instruction to the pigment pressure pump for pigment spraying. The pigment spraying module is used to spray corresponding colors of pigments according to different vibration states of the vibration rod on the concrete.

2. The concrete vibration quality assessment and marking device according to claim 1, characterized in that, The pigment storage tank stores three pigments: green, yellow, and red.

3. The concrete vibration quality assessment and marking device according to claim 2, characterized in that, The state recognition module is located at the front end of the vibration module. The state recognition module includes a displacement sensor, a force transmission rod, a guide wheel, a spring, a sealing ring, and a metal cover. The force transmission rod is respectively connected to the metal cover and the displacement sensor. The metal cover is connected to the vibration module through a spring. The spring can meet the deformation of the metal cover in different states. The movement of the metal cover drives the force transmission rod to move, so as to react the movement state of the metal cover in real time through the displacement sensor. The sealing ring has a contraction function, which can meet the up and down movement of the metal cover and at the same time prevent concrete from entering the state sensing module.

4. A method for evaluating and marking the quality of vibration compaction of cast-in-place concrete, characterized in that, Using the in-situ concrete vibration quality evaluation and marking device as described in any one of claims 1 to 3, the method includes the following steps: Step S1, Concrete vibration quality assessment method: Let the reasonable vibration time of concrete be T, and the maximum allowable vibration time be T_0. max The reasonable time and maximum allowable vibration time vary depending on the concrete specifications. Therefore, the minimum time for pulling out the concrete vibration module is set to T. min The effective vibration time for concrete is t1-t0; the time for removing the vibrator is t3-t2. When the following conditions are met simultaneously, the vibration is qualified and green pigment is sprayed; T≤(t1-t0)≤T max T min ≤(t3-t2); When the following conditions are met, it means that the pulling-out speed of the vibration rod is too fast and yellow pigment is sprayed; (t3-t2)≤T min ; When the following conditions are met, it means over-vibration and red pigment is sprayed; T max ≤(t1-t0); When the following conditions are met, it means under-vibration and yellow pigment is sprayed; (t1 - t0) ≤ T; At the position where the vibration rod is not inserted, no pigment is sprayed and the original color of the concrete is shown; Step S2, method for determining the pigment spraying timing: According to the whole process of the vibration of the vibration rod, the measured values shown by the displacement sensor are L0, L1, L2, and L3 respectively; establish a corresponding relationship diagram between the displacement of the metal cover and the vibration time during the vibration process. When the measured value of the displacement sensor returns to the value before insertion, it means that the vibration rod is pulled out, and at this time, the corresponding color of pigment is sprayed.

5. The method according to claim 4, characterized in that, In the step S2, the whole vibration process includes three stages: the insertion process, the effective vibration process, and the pulling-out process. The timing mechanism is as follows: Before the vibration device is inserted into the concrete, the metal cover is in a suspended state. Under the action of gravity, the spring elongates, and the force transmission rod drives the displacement gauge to elongate. Measure the elongation of the displacement gauge at this time as L0; During the process of inserting the vibrating device into the concrete, the metal cover is supported by the concrete, the spring length shortens, the position of the force transmission rod moves upward, the relative distance with the vibrating device decreases, the elongation of the displacement gauge decreases, and the measured value becomes L1. At this time: L1 < L0; when the elongation of the displacement gauge becomes smaller, record the time t0 at this moment. After the vibrating device reaches its maximum position, it continues to vibrate. As the concrete liquefies due to vibration, the concrete support force decreases. The metal cover moves downward relative to the vibrating device, and the displacement gauge reading increases to L2. Although the concrete liquefies, it still provides support to the metal cover, but the support is less than that of unvibrated concrete. Therefore, L1 < L2 < L0. Record the time t1 at this time. When the vibrating device starts to be pulled out, the metal cover moves upward with the vibrating device during the pulling process. Due to the upward acceleration and the frictional resistance of the concrete, the distance between the metal cover and the vibrating device increases. The displacement sensor measures L3. At this time: L1 < L2 < L0 < L3. When the displacement sensor measurement suddenly increases, it indicates that the vibrating device has started to be pulled out. Record the time t2 at this time. After the vibrating device is pulled out of the concrete, the resistance of the concrete to the metal cover disappears. Under the action of the spring, the relative distance between the metal cover and the vibrating device decreases, and the displacement of the metal cover relative to the vibrating device returns to the state before insertion. That is, the displacement sensor measurement value is L0, and the time at this moment is recorded as t3.

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