JP7712154B2 - Concrete filling management system and concrete filling management method - Google Patents

Description

The present invention relates to a concrete filling management system and a concrete filling management method for managing the state of concrete filling into a formwork.

A concrete structure is constructed by assembling a formwork and filling it with concrete. For example, Patent Document 1 describes a technique for measuring the concrete filling state. According to the technique described in Patent Document 1, after placing multiple sensors that detect pressure and temperature inside the formwork, concrete is filled into the formwork and the concrete filling state is monitored based on the values detected by the sensors.

JP 2015-108260 A

When filling concrete, it is difficult to visually check the condition inside the formwork because of the presence of the formwork. Therefore, to check the filling condition inside the formwork while filling it with concrete, workers have to check whether the filling is good or bad based on the sounds made by the formwork's hammering. When checking the filling condition of concrete based on the sounds made by the formwork's hammering, it relies on the worker's senses, and there is a risk that there will be areas in the formwork where the concrete has not been filled. The technology described in Patent Document 1 does not identify areas in the formwork where the concrete has not been filled properly.

The present invention aims to provide a concrete filling management system and method that detects areas of poor concrete filling in a formwork when filling with concrete and enables appropriate measures to be taken.

One aspect of the present invention is characterized by comprising a formwork assembled to form a concrete filling space on one side, a number of sensors attached to the other side of the formwork to detect the pressure of the formwork, and a management device that monitors the condition of the concrete in the formwork based on the detection results of the number of sensors when the concrete is filled into the filling space, and determines the condition of the concrete in the filling space.

According to the present invention, a sensor can detect deformation of the formwork in real time when concrete is being filled, and based on the detection results, it can be determined whether or not there is insufficient concrete being filled in the formwork.

The management device of the present invention may also identify the position of the formwork where the concrete is insufficiently filled in the filling space based on the detection results of the multiple sensors.

According to the present invention, by matching the sensor detection result indicating insufficient filling with the sensor position, it is possible to identify the position where insufficient filling has occurred in a formwork whose interior cannot be seen.

The management device of the present invention may also specify a predetermined range in which to apply the vibrator in the filling space corresponding to the position.

According to the present invention, even if the inside of the formwork cannot be seen, the area in which the vibrator should be applied can be identified by identifying the location in the formwork where insufficient filling has occurred.

The management device of the present invention may also determine the filling state of the concrete after application of the vibrator based on the detection results of the sensor installed at the position corresponding to the specified range.

According to the present invention, the sensor constantly detects the concrete filling condition, so the concrete filling condition can be monitored even after the vibrator is installed.

The management device of the present invention may also determine the hardened state of the concrete after the concrete has been filled, and determine whether the formwork can be removed based on the result of the determination.

According to the present invention, it is possible to monitor the hardening state of concrete after it has been filled, and to determine when the formwork can be removed.

In addition, when the construction target is prestressed concrete, the management device of the present invention may determine, after removing the formwork, whether the concrete has hardened to a degree that allows tensioning of the PC steel material based on the detection value of the sensor.

According to the present invention, when the construction target is prestressed concrete, the time when the PC steel can be tensioned can be determined by monitoring the hardening state of the concrete.

One aspect of the present invention is a concrete filling management method that includes the steps of: combining forms to form a concrete filling space on one side; attaching a plurality of sensors to the other side of the forms; filling the concrete into the filling space of the forms; and monitoring the condition of the concrete in the forms based on the detection results of the plurality of sensors and determining the condition of the concrete in the filling space.

According to the present invention, a sensor is attached to the formwork, and the sensor can detect deformation of the formwork in real time when concrete is being filled. According to the present invention, it is possible to determine whether or not insufficient concrete has been filled in the formwork based on the detection results of the sensor.

The present invention may also include a step of identifying the position of the formwork where the filling space is insufficient with the concrete based on the detection results of the multiple sensors.

According to the present invention, by matching the sensor detection result indicating insufficient filling with the sensor position, it is possible to identify the position where insufficient filling has occurred in a formwork whose interior cannot be seen.

The present invention may also include a step of applying a vibrator to a predetermined area of the filling space corresponding to the position.

According to the present invention, even if the inside of the formwork cannot be seen, the area in which the vibrator should be applied can be identified by identifying the location in the formwork where insufficient filling has occurred.

The present invention may also include a step of judging the hardening state of the concrete after the concrete has been filled, and judging whether the formwork can be removed based on the result of the judgment.

According to the present invention, it is possible to monitor the hardening state of concrete after it has been filled, and to determine when the formwork can be removed.

The present invention may also include a step of determining, when the construction target is prestressed concrete, whether the concrete has hardened to a degree that allows tensioning of the PC steel based on the detection value of the sensor.

According to the present invention, when the construction target is prestressed concrete, the time when the PC steel can be tensioned can be determined by monitoring the hardening state of the concrete.

According to the present invention, it is possible to detect areas where concrete is being filled poorly within a formwork when concrete is being filled, and to take appropriate measures.

1 is a diagram showing a configuration of a concrete filling management system according to an embodiment of the present invention. FIG. 13 is a diagram showing an example of a control image showing a filling state of concrete. 1 is a flowchart showing the process flow of each step of a concrete filling management method.

Below, we will explain an embodiment of the concrete filling management system and concrete filling management method according to the present invention, with reference to the drawings.

As shown in Figure 1, the concrete filling management system comprises a formwork C installed at a site, a plurality of sensors S provided on the formwork C, a communication device 20 that transmits detection values of the sensors S, a management device 10 that manages the concrete filling status based on the detection values of the sensors S, and a mobile terminal 30 for checking the concrete filling status at the site. The formwork C is installed at a construction site of a structure.

The formwork C is assembled to form a concrete filling space U on one side C1 in order to form the shape of a structure. For example, a plurality of sensors S are attached to the other side C2 of the formwork C to detect the state of the one side C1 of the formwork C. The sensors S are formed, for example, of piezoelectric elements (piezoelectric elements) that detect the state of the concrete at the position of the formwork C. The sensors S convert the change in pressure when the formwork C is filled with concrete into a voltage and output it. Based on the detection value of the sensors S, it is possible to monitor whether fresh concrete is filled at the position of the formwork C and the hardening state of the concrete (strength estimation). For example, the plurality of sensors S are arranged at a predetermined interval along the up, down, left and right directions on the other side C2 of the formwork C. The arrangement relationship of the sensors S and the shape of the sensors S may be changed appropriately based on conditions such as the shape of the formwork C and the shape of the filling space U.

A communication device 20 is connected to the multiple sensors S. The communication device 20 is configured by a terminal device having a communication function, such as a personal computer, a smartphone, or a tablet terminal. Any other device capable of communication may be used as the communication device 20. The communication device 20 transmits data on the detection values of the sensors S to the management device 10 via a network W. The network W is an in-house wireless LAN (Local Area Network) or a public wireless line.

The management device 10 acquires data regarding the detection value of the sensor S via the network W. The management device 10 is, for example, a server device connected to the network W. The management device 10 is, for example, configured by a personal computer. The management device 10 acquires data, for example, via the communication unit 11. The communication unit 11 is configured by a communication device that can be connected to the network W. The communication unit 11 is, for example, controlled by the calculation unit 12.

The calculation unit 12 monitors the state of the concrete in the formwork C when filling the filling space U with concrete K based on data including the detection results of the multiple sensors acquired from the communication unit 11, and judges the state of the concrete in the filling space within the formwork C. For example, the calculation unit 12 estimates the two- or more-dimensional position of the formwork where the filling of the filling space with concrete K is insufficient based on the judgment result judged based on the detection results of the multiple sensors. The calculation unit 12 calculates the filling speed of the concrete K and the first pressure in the normal state at the position of the sensor S based on the detection values and setting conditions such as the detection start time of the sensor S (first sensor), the detection start time of the sensor S (second sensor) adjacent to and above the sensor S, the cross-sectional area of the filling space U at the mounting position of the sensor S, the distance between the first sensor and the second sensor, and the density of the concrete K.

The relationship between the detection value of the sensor S and the pressure of the concrete K is stored in advance in the memory unit 14 as, for example, map data. The calculation unit 12 refers to the map data and calculates the second pressure of the concrete relative to the detection value of the sensor S. The calculation unit 12 compares the first pressure with the second pressure, and if the difference is less than a preset threshold value, determines that the concrete filling state at the position of the formwork C is sufficient and the filling of the concrete K is normal. The calculation unit 12 compares the first pressure with the second pressure, and if the difference is equal to or greater than a preset threshold value, determines that the concrete filling at the position of the formwork C is insufficient and the filling of the concrete K is insufficient.

When the calculation unit 12 determines that the filling of the concrete K is insufficient, it identifies the position of the first sensor. Based on the identified position of the first sensor, the calculation unit 12 estimates a predetermined range in which the vibrator is to be applied in the filling space corresponding to the calculated position. The calculation unit 12 generates a management image M that displays the estimated predetermined range, and displays it on the display unit 13. The calculation unit 12 also transmits a notification including data on the management image M and a message that insufficient filling of the concrete K has occurred to the mobile terminal 30 via the communication unit 11 and the network W.

The mobile terminal 30 receives a notification from the management device 10 via the network W. At the site, the worker checks the position of the sensor S where the concrete K is insufficiently filled based on the notification and management image M displayed on the mobile terminal 30.

As shown in FIG. 2, the management image M displays a message indicating that insufficient filling has occurred, an ID number for individually identifying the formwork C, the shape of the formwork C, the position of the sensor where the insufficient filling has occurred, a schematic illustration of the vibrator application area, etc.

The worker temporarily stops filling the concrete K, identifies the position of the sensor S based on the management image M, and applies the vibrator to a specified area in the filling space U that corresponds to the position. The worker performs an input operation on the mobile terminal 30 to the effect that the application of the vibrator has been completed. Based on the input operation, the mobile terminal 30 transmits a completion notification that the application of the vibrator has been completed to the management device 10 via the network W.

After receiving the completion notification, the calculation unit 12 again judges the filling state of the concrete K after the vibrator is applied based on the detection result of the sensor S installed at a position corresponding to the specified range. If the filling defect is resolved based on the above-mentioned judgment method, the calculation unit 12 transmits a resolution notification indicating that fact. If the filling defect is not resolved, the calculation unit 12 again transmits a notification including the data of the management image M and a message indicating that a filling shortage of the concrete K has occurred to the mobile terminal 30 via the network W. The calculation unit 12 repeats the above process until the filling defect is resolved. At the site, when a message indicating that a resolution notification has been received is displayed on the mobile terminal 30, the worker resumes filling the concrete K.

After the concrete filling is completed, the calculation unit 12 determines the hardening state of the concrete based on the detection result of the sensor S. Furthermore, when the construction target is prestressed concrete, the calculation unit 12 may determine that the PC steel can be tensioned when the detection value of the sensor S is within a threshold range preset according to the hardening degree of the concrete at which the PC steel can be tensioned. The calculation unit 12 determines that the formwork C can be removed when the detection value of the sensor S is within a threshold range preset according to the hardening degree of the concrete.

Next, we will explain the concrete filling management method managed by the concrete filling management system 1.

Figure 3 shows the process flow of each step of the concrete filling management method. Each step may be ordered as appropriate. The worker assembles the formwork C so as to form a concrete filling space U on one side C1 of the formwork C (step S100). The worker attaches a sensor S to the other side C2 of the formwork C (step S102). The worker fills the filling space U of the formwork C with concrete K (step S104). The management device 10 monitors the filling state of the concrete K in the filling space U based on the detection results of the multiple sensors S (step S106). The management device 10 determines whether or not there is an insufficient amount of concrete filling in the filling space based on the monitoring results (step S108).

If the management device 10 determines that there is insufficient filling, it identifies the position in the formwork C where the filling of the concrete K in the filling space U is insufficient (step S110). If the filling of the concrete is sufficient, the process proceeds to step S114, and the concrete filling continues. Based on the notification displayed on the mobile terminal 30, the worker applies a vibrator to a predetermined area of the filling space U that corresponds to the position in the formwork C where the insufficient filling occurred (step S112). Based on the detection value of the sensor S, the management device 10 determines whether the insufficient concrete filling has been resolved (step S114). If the insufficient concrete filling has been resolved, the worker continues filling the concrete based on the notification displayed on the mobile terminal 30.

The management device 10 determines whether or not the filling of concrete has been completed (step S116). If the filling of concrete is to be continued (step S116: No), the management device 10 returns the process to step S104 and continues filling of concrete. If the filling of concrete is to be completed (step S116: Yes), the management device 10 determines the degree of hardening of the concrete (step S118).

When the construction object is prestressed concrete, the management device 10 judges whether the degree of hardening of the concrete is sufficient to tension the PC steel (step S120). When the degree of hardening of the concrete reaches a predetermined standard (step S120: Yes), the management device 10 judges that the degree of hardening of the concrete is sufficient to tension the PC steel, and the worker places the PC steel in the concrete in a tensioned state (step S122). The worker removes the formwork C (step S124). Each step may be interchanged as appropriate.

As described above, the concrete filling management system 1 can monitor the filling status of the concrete K in the formwork C in real time. The concrete filling management system 1 can identify the position in two or more dimensions where insufficient concrete filling has occurred in the formwork C in real time, and can prompt the installation of the vibrator in real time. The concrete filling management system 1 can re-determine whether the installation of the vibrator is sufficient, and can reliably prevent poor installation. The concrete filling management system 1 can reuse the sensor S after installation, and can reduce installation costs.

The above-mentioned calculation unit 12 is realized by a processor such as a CPU (Central Processing Unit) or a GPU (Graphics Processing Unit) executing a program (software). Some or all of these functional units may be realized by hardware such as an LSI (Large Scale Integration), an ASIC (Application Specific Integrated Circuit), or an FPGA (Field-Programmable Gate Array), or may be realized by a combination of software and hardware. The program may be stored in a storage device such as an HDD (Hard Disk Drive) or flash memory included in the storage unit 14, or may be stored in a removable storage medium such as a DVD or CD-ROM, and installed in the storage device by inserting the storage medium into a drive device.

Although one embodiment of the present invention has been described above, the present invention is not limited to the above embodiment and can be modified as appropriate without departing from the spirit of the present invention. For example, in the concrete filling management system, a piezoelectric element is used as the sensor S, but this is not limiting and other sensors such as laser sensors and ultrasonic sensors may be used as long as they can detect the pressure of the formwork C, the pressure of the filling space U, and the state of the filling space U. Furthermore, the method of determining whether concrete is insufficiently filled in the management device 10 is one example, and the determination may be made based on other calculation methods and other detection methods.

10 Management device C Formwork C1 One side C2 Other side K Concrete S Sensor U Filling space

Claims (9)

A formwork that is assembled to form a concrete filling space on one side;
A plurality of sensors attached to the other side of the formwork to detect the pressure of the formwork;
a management device that monitors a state of the concrete in the formwork based on detection results of the plurality of sensors when filling the concrete into the filling space, and determines a state of the concrete in the filling space ;
The sensor is formed of a piezoelectric element, and is configured to convert a change in pressure when the concrete is filled into the formwork into a voltage and output the voltage, thereby enabling monitoring of the hardening state of the concrete;
The plurality of sensors are disposed at predetermined intervals along the top, bottom, left, and right directions on the other surface side of the formwork,
The management device is characterized in that after the concrete is filled, the management device judges the hardening state of the concrete, and based on the judgment result, judges whether the formwork can be removed .
Concrete filling management system. The management device identifies a position of the formwork where the filling of the concrete in the filling space is insufficient based on the detection results of the plurality of sensors.
The concrete filling management system according to claim 1 . The management device specifies a predetermined area in which the vibrator is to be applied in the filling space corresponding to the position.
The concrete filling management system according to claim 2. The management device determines a filling state of the concrete after application of the vibrator based on a detection result of the sensor provided at the position corresponding to the predetermined range.
The concrete filling management system according to claim 3. When the construction target is prestressed concrete, the management device determines whether the concrete has a hardening degree that allows tensioning of PC steel members based on the detection value of the sensor.
The concrete filling management system according to claim 4 . A process of assembling forms to form a concrete filling space on one side;
attaching a plurality of sensors to the other side of the formwork;
filling the filling space of the formwork with the concrete;
and monitoring a state of the concrete in the formwork based on detection results of the plurality of sensors and determining a state of the concrete in the filling space .
The sensor is formed of a piezoelectric element, and is configured to convert a change in pressure when the concrete is filled into the formwork into a voltage and output the voltage, thereby enabling monitoring of the hardening state of the concrete;
The plurality of sensors are disposed at predetermined intervals along the top, bottom, left, and right directions on the other surface side of the formwork,
The method further comprises a step of judging a hardening state of the concrete after the filling of the concrete is completed, and judging whether the formwork can be removed based on the judgment result .
Concrete filling management method. The method further comprises the step of: identifying a position of the formwork where the filling space is insufficiently filled with the concrete based on the detection results of the plurality of sensors.
The method for managing concrete filling according to claim 6 . A step of applying a vibrator to a predetermined area of the filling space corresponding to the position is provided.
The concrete filling management method according to claim 7 . When the construction target is prestressed concrete, the method further comprises a step of determining, after removing the formwork, whether or not the concrete has hardened to a degree that allows tensioning of PC steel members based on the detection value of the sensor.
The concrete filling management method according to claim 8 .