JP3575008B2 - Concrete condition measuring device - Google Patents

Description

[0001]
TECHNICAL FIELD OF THE INVENTION
The present invention relates to a concrete condition measuring device used for measuring conditions such as cracks, cavities, and peeling of concrete such as tunnel lining, and in particular, a concrete condition measuring device used for uniform measurement by mechanization. About.
[0002]
[Prior art]
Concrete structures such as tunnels and box culverts, and structures such as exterior tile walls of buildings, may cause cavities due to springs, land subsidence, and other various factors behind the walls over a long period of time. Sometimes there are cavities to the back of the tile wall. The existence of such a cavity has a great effect on the deterioration of the strength of the concrete structure.If left in the deteriorated state, the vehicle may fall down due to the vibration of the running vehicle, etc. Detection is an indispensable part of the maintenance of concrete structures and tile walls, etc.Therefore, inspection techniques for detecting danger points, deteriorated points, defective points, etc. are now visually inspected without destroying the structure. Non-destructive inspection methods are used to inspect impossible internal defects, etc. Various methods are known, such as radar method, ultrasonic method, resilience method, hitting method, etc. In particular, the first technique is to diagnose the cavity on the back surface of a concrete lining structure such as a tunnel or the peeling of the concrete lining structure such as a tunnel by a tapping method.
[0003]
Striking sound method is used extensively for a long time, when performing inspections and investigation of the tunnel lining concrete, the surface of the concrete in the approximate 1 m ² in one place manually 500-1000
The human being judged cracks, cavities, and peeling by hitting sound with a hammer of g. Inspection by hammering is a basic inspection method that has been performed for a long time, but since this method relies solely on hearing, the judgment can be made empirically and intuitively, and can only be made by experienced engineers.
[0004]
For this reason, the concrete surface is hit with a hydraulic hammer, etc., and the propagation impact sound propagating in the concrete itself is pressed against the diagnostic surface, collected by the sound receiving microphone, and the collected propagation impact sound is analyzed by the analysis unit. In this way, the soundness of concrete can be evaluated, and analysis and evaluation can be performed in association with the presence of a cavity or the like without relying on hearing. Therefore, in recent years, the above-described system is generally used as a tapping method. According to the conventional tapping method, the downward force such as the peeling of floor tiles in a building can keep the pressing force constant due to the weight of the sound receiving equipment. The measurement was made by pressing the vibration sensor by hand.
[0005]
However, in such a tapping method, since there is no pressing device for the horizontal or upward direction, and a small machine is carried in a hand, it takes time and labor to inspect the wall surface above the tunnel. In addition, cavities are analyzed and evaluated based on the relationship between measured waveforms and experimental waveforms.In order to increase the reliability of measured values, it is necessary to measure shock vibration and sound reception under the same conditions. In measurement with a small machine in hand, it is difficult to always set the same conditions, such as the hammer's impact force and the right angle impact on a wall or the installation position of a sound collecting microphone.
[0006]
Therefore, as a technical means for solving these inconveniences, hitting sound generating means for hitting the surface of concrete to generate a hitting sound, hitting sound collecting means for collecting the hitting sound generated, and collecting the hitting sound have been conventionally used. A condition measuring device for measuring the condition of the concrete based on the hitting sound; a condition measuring device integrated with these means; A travel rail that is movable within a range of 2.5 m and that is movable and non-contact in a predetermined magnitude, direction and point of action, and that includes an upper body and a lower travel body on which the travel rail is mounted. There is a concrete state measuring device including a bogie and a pair of left and right outriggers for suppressing the inclination of an upper vehicle body included in the traveling bogie within a certain range.
[0007]
According to such a concrete condition measuring device, it is possible to measure uniform conditions such as cracks, cavities, peeling, etc. of concrete due to mechanization, and to produce a diagnostic map, thereby leading to human fatigue and erroneous operation in a poor environment. Diagnosis can be prevented.
[0008]
[Problems to be solved by the invention]
However, in such a concrete condition measuring device, in order to speed up the measurement of the concrete condition as a whole, when a plurality of condition measuring devices are integrally formed as a condition measuring device unit, However, depending on the original shape and the degree of deterioration of the concrete to be measured, it is often considered that all of the condition measuring instruments cannot be pressed vertically.
[0009]
That is, when the condition of the concrete is measured by the condition measuring unit, the hammer striking force, the striking angle (perpendicular to the concrete surface) and the sound collecting microphone are measured at all the measuring points corresponding to each condition measuring device. Since the installation position and the like cannot be set to the same condition, inaccurate measurement values may be inevitably included in the measurement values, and the reliability of the measurement values may be considerably reduced.
[0010]
Therefore, an object of the present invention is to provide a state measuring device unit in which a plurality of state measuring devices are integrated, even when measuring the state of concrete, so that the reliability of the measured values can be sufficiently increased. It is an object of the present invention to provide a concrete condition measuring device which can measure shock vibration and sound reception under the same conditions at all measurement points corresponding to a container.
[0011]
[Means for Solving the Problems]
That is, the concrete condition measuring device according to the present invention comprises a tapping sound generating means for hitting the surface of concrete to generate a tapping sound, a tapping sound collecting means for collecting the tapping sound generated, and the tapping sound collected includes a state measurement means for measurement of the state of the concrete on the basis of, exhibits a plurality of box-shape of the integrated state measuring device in a casing member that exhibits at least the ball striking sound generating means and ball striking sound collecting means cylindrical A state measuring unit integrally formed by a frame member ; unit pressing means for pressing the state measuring unit against a surface of concrete with a predetermined force; Measuring device pressing means for pressing each state measuring device of the measuring device unit with an equal force magnitude, wherein each state measuring device of the state measuring device unit is Comprising a measuring instrument conformal means to follow the shape of the surface of devoted so concrete press perpendicular to the surface, the measuring instrument conformal means, the casing member with a pin in the shape surrounding the casing member rotatably And a ring member connected so that the end of the rod which is one end is rotatably connected to the frame member by a ball joint, and the other end is rotatably connected to the ring member by another pin. A hydraulic cylinder connected to the hydraulic cylinder, and wherein the measuring device pressing means is a communication pipe that connects hydraulic pipes of the respective hydraulic cylinders to each other .
[0012]
According to the concrete condition measuring device of the present invention, a measuring device pressing means for pressing each condition measuring device evenly to the concrete surface, and a measuring device shape following device for pressing each condition measuring device vertically to the concrete surface. Therefore, even when measuring the condition of concrete with a condition measuring unit in which a plurality of condition measuring devices are integrated, the same conditions are used for all measurement points corresponding to each condition measuring device. It is possible to measure shock vibration and sound reception at the site.
[0013]
Therefore, the inaccuracy of the measured values is not mixed, and the reliability of the measured values can be sufficiently improved.
[0014]
Further, the concrete condition measuring device according to the present invention comprises a tapping sound generating means for hitting the surface of the concrete to generate a tapping sound, a tapping sound collecting means for collecting the hitting sound generated, and the tapping sound collected A plurality of condition measuring instruments in which at least the tapping sound generating means and the tapping sound sampling means are integrated with a casing member having a cylindrical shape. A state measuring unit integrally formed by a frame member; unit pressing means for pressing the state measuring unit against a surface of concrete with a predetermined force; Measuring device pressing means for pressing each state measuring device of the measuring device unit with an equal magnitude of force, wherein each state measuring device of the state measuring device unit is made of concrete. A measuring instrument shape following means for following the shape of the concrete surface so as to be pressed perpendicularly to the surface, wherein the measuring instrument shape following means comprises a ball joint which is rotatable at one end, the tip of a rod. A hydraulic cylinder connected to the frame member, the other end of which is rotatably connected to the casing member by a pin, and a casing guide for suppressing the run-out of the casing member to a certain range, The measuring device pressing means is characterized in that the hydraulic pipes of the respective hydraulic cylinders are communication pipes that communicate with each other.
[0015]
BEST MODE FOR CARRYING OUT THE INVENTION
Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings.
[0016]
◎ Embodiment 1
FIG. 1 is a side view showing an entire configuration of a concrete state measuring device according to Embodiment 1 of the present invention, FIG. 2 is a perspective view showing a partial configuration of the concrete state measuring device, and FIG. 3 is a concrete state measuring device. FIG. 2 is a plan view showing a partial configuration of the device.
[0017]
In the first embodiment, as shown in FIG. 1, the concrete condition measuring device includes a condition measuring unit 1, a robot arm 2 serving as a unit pressing means, and a measuring device pressing means 3. . Hereinafter, each component will be described in detail.
[0018]
(1) State measurement unit 1
The state measuring device unit 1 includes a tapping sound generating means, a tapping sound collecting means, and a state measuring means, and a state measurement in which the tapping sound generating means and the tapping sound collecting means are integrated by a cylindrical casing member 11a. A plurality of containers 11 are formed integrally with a frame member 1a having a box shape.
[0019]
The condition measuring unit 1 according to the first embodiment includes a unit shape follower 12 that follows the shape of the surface of the concrete C so as to be pressed as a whole against the surface of the concrete C.
[0020]
Specifically, as shown in FIG. 2, the unit shape following means 12 comprises a ball joint 12a for connecting the state measuring unit 1 to the robot arm 2 so as to swing freely, and a robot for the frame member 1a. A swing stabilizing spring 12b for applying a pressing force radially outward from the arm 2 is provided.
[0021]
Thus, even when the surface of the concrete C has irregularities, the unit shape following means 12 vertically moves the entire condition measuring unit 1 in accordance with the surface shape of the concrete C having such irregularities. It is possible to push. In other words, the existence of the unit shape following means 12 makes it possible to more reliably perform shock vibration and sound reception under the same conditions at all measurement points corresponding to each state measuring device 11 of the state measuring device unit 1. Can be measured.
[0022]
As shown in FIG. 3, in each of the state measuring devices 11 of the state measuring device unit 1, a hydraulic hammer 11b included in a striking sound generating means is attached to a bottom plate 11c with a fixing bolt 11d in a casing member 11a. Included in shape. Although not shown, the structure is such that the striking surface of the hydraulic hammer 11b and the opening surface of the casing member 11a at the time of striking are substantially equal.
[0023]
In each of the state measuring devices 11, the tapping sound generating means includes a hydraulic hammer 11b (not shown in FIG. 3), and plays a role of hitting the surface of the concrete C to generate a tapping sound.
[0024]
Impulse hammers and air pressure hammers may be considered as alternatives to the hydraulic hammer 11b. However, in these hammers, electrical noise, air wave, hammer rebound, rebound prevention magnet operating noise, etc. are analyzed and analyzed. There is a trouble that gets in the way.
[0025]
The tapping sound collecting means includes a microphone (not shown) and plays a role in collecting the generated tapping sound.
[0026]
The number of tapping sound collecting means is equal to the number of tapping sound generating means. This makes it possible to perform the tapping sound measurement for all the measuring points of the same number as the number of tapping sound generating means by one positioning of the state measuring unit 1, thereby improving the efficiency.
[0027]
Further, the condition measuring means serves to measure the condition of the concrete C based on the sampled tapping sound.
[0028]
More specifically, the condition measuring means is a computer (not shown) including an input means, an output means, a CPU, a RAM and a ROM, and a program for executing a condition measurement of the concrete C based on the collected tapping sound. And stored in the ROM.
[0029]
With this state measuring means, it is possible to evaluate the hammering sound, and to quantitatively and objectively measure the state of the concrete C such as cracks, cavities, and peeling based on the evaluation.
[0030]
By the way, each state measuring device 11 of the state measuring device unit 1 includes a measuring device shape follow-up means 13 that follows the shape of the surface of the concrete C so as to be pressed perpendicularly to the surface of the concrete C.
[0031]
Specifically, the measuring instrument shape following means 13 includes a ring member 21 that connects the casing member 11a so as to be rotatable with a pin 21a so as to surround the casing member 11a, and a tip of a rod that is one end. The hydraulic cylinder 22 is rotatably connected to the frame member 1a by a ball joint 22a and the other end is rotatably connected to the ring member 21 by a pin 22b. (In other words, the casing member 11a is connected to extend and contract vertically through a universal joint).
[0032]
Accordingly, even when the surface of the concrete C has irregularities, the operation of the measuring instrument shape following means 13 causes the individual state measuring instruments 11 to be vertically moved in correspondence with the surface shape of the concrete C having such irregularities. It is possible to push against. That is, in addition to the unit shape following means 12 described above, the existence of such a measuring instrument shape following means 13 makes it possible to more surely perform shock vibration under the same conditions for all measuring points corresponding to each state measuring instrument 11. It is possible to measure sound and sound reception.
[0033]
(2) Robot arm 2
The robot arm 2 plays a role of pressing the condition measuring unit 1 against the surface of the concrete C with a predetermined force.
[0034]
More specifically, a general-purpose multi-axis independent joint type industrial robot mounted on a traveling vehicle is used as the robot arm 2.
[0035]
(3) Measurement device pressing means 3
The measuring device pressing means 3 plays a role of pressing the state measuring devices 11 of the state measuring device unit 1 against the surface of the concrete C with a uniform magnitude of force.
[0036]
Specifically, as shown in FIG. 1, the measuring device pressing means 3 is a communication pipe 23 that connects the hydraulic pipes of the respective hydraulic cylinders 22 to each other. That is, the existence of such a measuring device pressing means 3 makes it possible to perform shock vibration under the same conditions at all the measuring points corresponding to each state measuring device 11. In other words, such a measuring device pressing means 3 is a prerequisite when the state of the concrete C is measured by the state measuring unit 1 in which a plurality of the state measuring devices 11 are integrated. It is an indispensable component for 1.
[0037]
That is, the measurement of the state of the concrete C using such a concrete state measuring device is performed on the condition that each state measuring device 11 is pressed against the surface of the concrete C with a uniform force. 1 As a whole, each of the condition measuring devices 11 performs the condition measurement of the concrete C while pressing the condition measuring unit 1 and each condition measuring device 11 vertically against the surface of the concrete C. is there.
[0038]
As described above, according to the concrete condition measuring device according to the first embodiment, the measuring device pressing means 3 that presses each condition measuring device 11 against the surface of the concrete C with a uniform force, Measuring device shape following means 13 for vertically pressing each state measuring device 11 against the surface of the concrete C is provided.
[0039]
Therefore, even when the state of the concrete C is measured by the state measuring device unit 1 in which a plurality of the state measuring devices 11 are integrated, all the measuring points corresponding to each of the state measuring devices 11 under the same condition. It became possible to measure shock vibration and sound reception.
[0040]
Therefore, inaccuracies in the measured values are not mixed, and the reliability of the measured values can be sufficiently improved.
[0041]
◎ Embodiment 2
4 is a side view showing an entire configuration of a concrete state measuring device according to Embodiment 2 of the present invention, FIG. 5 is a perspective view showing a partial configuration of the concrete state measuring device, and FIG. 6 is a concrete state measuring device. FIG. 2 is a plan view showing a partial configuration of the device. Note that components similar to those of the first embodiment are denoted by the same reference numerals as those of the first embodiment, and detailed description thereof is omitted here.
[0042]
As shown in these figures, the concrete state measuring device according to the second embodiment is substantially the same as the first embodiment, but is different from the first embodiment in that a measuring instrument shape following means 13 including a universal joint is provided. In place of the hydraulic cylinder 22, one end of the rod is rotatably connected to the frame member 1a by a ball joint 22a and the other end is rotatably connected to the casing member 11a by a pin. A casing guide 31 for suppressing the deflection of the casing member 11a within a certain range, and a measuring instrument shape follow-up means 43 comprising a communication pipe 23 communicating with each other by hydraulic piping of each hydraulic cylinder 22.
[0043]
The measuring instrument shape following means 43 according to the second embodiment also follows the shape of the surface of the concrete C so that each state measuring instrument 11 of the state measuring instrument unit 1 is pressed perpendicularly to the surface of the concrete C. This is a technical means that has substantially the same effect as the measuring instrument shape following means 13 in the first embodiment.
[0044]
Therefore, the concrete state measuring device according to the second embodiment can also measure the state of the concrete C by the state measuring unit 1 in which a plurality of the state measuring devices 11 are integrated as in the first embodiment. Even if there is, it is possible to measure the impact vibration and the sound reception under the same conditions at all the measurement points corresponding to each state measuring instrument 11.
[0045]
【The invention's effect】
According to the concrete condition measuring device of the present invention, even when performing a concrete condition measurement with a condition measuring device unit in which a plurality of condition measuring devices are integrated, the reliability of the measured values is sufficiently increased. In addition, it is possible to measure shock vibration and sound reception under the same conditions at all measurement points corresponding to each state measuring device.
[Brief description of the drawings]
FIG. 1 is a side view showing an entire configuration of a concrete state measuring device according to Embodiment 1 of the present invention.
FIG. 2 is a perspective view showing a partial configuration of the concrete state measuring device according to the first embodiment of the present invention.
FIG. 3 is a plan view showing a partial configuration of the concrete state measuring device according to Embodiment 1 of the present invention.
FIG. 4 is a side view showing an overall configuration of a concrete state measuring device according to Embodiment 2 of the present invention.
FIG. 5 is a perspective view showing a partial configuration of a concrete state measuring device according to Embodiment 2 of the present invention.
FIG. 6 is a plan view showing a partial configuration of a concrete state measuring device according to Embodiment 2 of the present invention.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 ... Measurement unit 1a ... Frame member 2 ... Robot arm (unit pressing means)
3 ... Measurement device pressing means 11 ... State measurement device 11a ... Casing member 11b ... Hydraulic hammer 11c ... Bottom plate 11d ... Fixed bolt 12 ... Unit shape following means 22a ... Ball joint 12b ... Swinging stabilization spring 13 ... Measuring device shape following Means 21 Ring member 21a Pin 22 Hydraulic cylinder 22a Ball joint 22b Pin 23 Communication tube 31 Casing guide 43 Measurement shape following means C Concrete

Claims (2)

A tapping sound generating means for hitting the surface of concrete to generate a tapping sound, a tapping sound collecting means for collecting the tapping sound generated, and a state measuring means for measuring the state of the concrete based on the collected tapping sound A state measuring unit comprising at least a plurality of state measuring units in which at least the tapping sound generating means and the tapping sound collecting means are integrated with a cylindrical casing member and a box-shaped frame member. When,
Unit pressing means for pressing the condition measuring unit against a surface of concrete with a predetermined force,
Measuring device pressing means for pressing each state measuring device of the state measuring device unit against the surface of concrete with an equal magnitude of force,
Each state measuring device of the state measuring device unit includes a measuring device shape following means for following the shape of the concrete surface so as to be pressed perpendicularly to the surface of the concrete ,
A ring member for connecting the casing member so that the casing member is rotatable with a pin in a shape surrounding the casing member,
A hydraulic cylinder in which one end of a rod is rotatably connected to the frame member by a ball joint and the other end is rotatably connected to the ring member by another pin. ,
The measuring device pressing means is characterized in that a hydraulic pipe of each hydraulic cylinder is a communication pipe that communicates with each other ,
Concrete condition measuring device. A tapping sound generating means for hitting the surface of concrete to generate a tapping sound, a tapping sound collecting means for collecting the tapping sound generated, and a state measuring means for measuring the state of the concrete based on the collected tapping sound A state measuring unit comprising at least a plurality of state measuring units in which at least the tapping sound generating means and the tapping sound collecting means are integrated with a cylindrical casing member and a box-shaped frame member. When,
Unit pressing means for pressing the condition measuring unit against a surface of concrete with a predetermined force,
Measuring device pressing means for pressing each state measuring device of the state measuring device unit against the surface of concrete with an equal magnitude of force,
Each state measuring device of the state measuring device unit includes a measuring device shape following means for following the shape of the concrete surface so as to be pressed perpendicularly to the surface of the concrete,
The measuring instrument shape following means includes a hydraulic end having a rod end at one end rotatably connected to the frame member via a ball joint and the other end rotatably connected to the casing member via a pin. Having a cylinder and a casing guide for suppressing the run-out of the casing member to a certain range,
The measuring device pressing means is characterized in that a hydraulic pipe of each hydraulic cylinder is a communication pipe that communicates with each other ,
State measuring device of concrete.

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