KR101394240B1 - Sensor fixing apparatus for burying and installing in concrete structure, and method for the same - Google Patents

Abstract

Provided are a sensor fixing device embedded in a concrete structure and a method thereof. The present invention can fix a sensor for monitoring a concrete structure not to be exposed to the outside of the concrete structure by embedding a sensor fixing device in the concrete structure beforehand when the concrete structure is formed, and can embed the sensor fixing device for fixing the sensor in the preformed concrete structure by crushing the concrete structure. Since the sensor is embedded in the concrete structure and is strongly in contact with the inner surface of concrete by elastic springs having high stiffness, the present invention can accurately acquire the moving data of the concrete structure. Also, the present invention does not need an advanced work for attachment when the protruding sensor is attached, and can remove a main cause that spoils the appearance due to the protruding sensor.

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a sensor fixing device and a method of inserting the same in a concrete structure,

The present invention relates to a sensor fixing device, and more particularly, to a sensor fixing device which is embedded in advance in forming a concrete structure so that a measurement sensor for monitoring a concrete structure can be fixed so as not to be exposed to the outside of the concrete structure, .

Generally, concrete structures can be found everywhere such as houses, roads, bridges, skyscrapers, dams and so on. Such concrete structures may cause damage such as flexural failure and shear failure when used for a long period of time.

Therefore, various sensors are installed in the concrete structure to monitor whether or not the concrete structures are damaged such as flexural failure and shear failure, and when the occurrence of flexural failure and shear failure is detected, So that the occurrence of accidents can be prevented in advance. For example, a piezoelectric sensor can be attached to the surface of the concrete structure to evaluate the curing strength or integrity of the concrete structure.

1 is a view showing that a sensor fixing device according to a conventional technique is mounted so as to protrude from a concrete structure.

As shown in FIG. 1, various sensors 30 are installed on the concrete structure 20 in a protruding form in order to monitor the concrete structure 20 according to the conventional technique. At this time, the sensor 30 is mounted or attached to the sensor fixing device 10 protruding on the concrete structure 20. [ For example, the protruding sensor 30 has a method of attaching the sensor 30 after attaching the steel plate or attaching the sensor 30 to the external concrete structure 20 with epoxy or the like.

On the other hand, as a prior art, Korean Patent Registration No. 10-947573 discloses an apparatus for fixing a sensor to a support.

2 is a view of an apparatus for securing a sensor to a support according to the prior art.

As shown in Figure 2, a device for securing a sensor according to the prior art to a support is disclosed, in which a sensor mount 40 for securing a sensor to a support is disclosed, ) Is fixed to the supporting portion by particularly bonding.

According to the related art, when a surface protruding type sensor such as an accelerometer is attached for monitoring a concrete structure, it is installed in a state exposed to the outside, and there is a high risk of damaging the sensor 30 exposed to the outside , And there is a problem that the appearance is not good when long-term monitoring is performed.

Korean Patent No. 10-947573 filed on April 13, 2006, entitled "Apparatus for fixing a sensor to a support" Korean Patent No. 10-503248 filed on October 15, 2002, entitled "Sensor fixing jig" Korean Registered Patent No. 10-1238427 filed on July 2, 2010, entitled "Monitoring Device for Concrete Structures" Korean Patent No. 10-1228136 filed on November 24, 2011, entitled "Connection structure for installing non-contact type sensor" Korean Patent No. 10-1079751 filed on April 18, 2011, entitled "Remote Measurement Management System of Structures"

SUMMARY OF THE INVENTION The present invention has been made in view of the above problems, and an object of the present invention is to provide a sensor structure for monitoring a concrete structure by fixing a sensor fixing device in a concrete structure before a concrete structure is formed, The present invention provides a sensor fixing apparatus and method which can be embedded in a concrete structure.

It is another object of the present invention to provide a sensor fixing device and method for embedding and fixing a sensor fixing device for fixing a sensor in a concrete structure by crushing a previously formed concrete structure.

According to an aspect of the present invention, there is provided a sensor fixing apparatus embedded in a concrete structure according to the present invention, the sensor fixing apparatus including a sensor for monitoring a concrete structure, An inner case formed to correspond to a size and a shape; An outer case attached to the concrete structure and having the inner case inserted therein; An elastic connecting member installed between the inner case and the outer case and elastically fixing the inner case to the outer case; A cap for temporarily sealing the inner case to prevent the inflow of concrete when the concrete is poured; And protrusions formed on side surfaces and a lower surface of the outer case to be embedded in the concrete structure so as to enhance the adhesion of the concrete when the concrete is poured, wherein the sensor is fixed so as not to be exposed to the outside when monitoring the concrete structure do.

Here, the inner case may be formed of an elastic rubber material so as to correspond to the size and shape of the sensor, and the shape of the inner case may be circular or rectangular corresponding to the shape of the sensor.

Here, the outer case may be made of reinforced plastic, steel or aluminum.

Here, the elastic connecting member may be a plurality of springs installed between the inner surface of the outer case and the outer surface of the inner case, and between the bottom surface of the outer case and the bottom surface of the inner case.

Here, the inner case may be detached or attached to the outer case by the spring.

Here, when the sensor fixing device is mounted after the predetermined depth of the pre-formed concrete structure is crushed, the outer case and the inner case are all made of elastic rubber material so that they can be mounted irrespective of the condition inside the crushed concrete surface .

According to another aspect of the present invention, there is provided a method of embedding and mounting a sensor fixing device in a concrete structure according to the present invention, the method comprising: mounting a sensor fixing device to which a sensor for monitoring a concrete structure is fixed, Forming a sensor fixing device inserting portion in the concrete structure before the concrete is inserted so that the sensor fixing device can be embedded; b) inserting a sensor fixing device including an outer case, an inner case, an elastic connecting member, a cap, and a projection into the sensor fixing device insertion portion; c) forming a concrete structure by pouring concrete so that the outer case is embedded in the state that the inner case of the sensor fixing device is plugged with the plug; And d) removing the cap of the sensor fixing device and inserting and fixing the sensor into the inner case, wherein the sensor is fixed so as not to be exposed to the outside when monitoring the concrete structure.

In the step c), the projection of the sensor fixing device is embedded in the concrete structure after the concrete is poured.

The inner case 120 of the step b) is formed of an elastic rubber material corresponding to the size and shape of the sensor 300 and the shape of the inner case 120 corresponds to the shape of the sensor 300 And may be formed in a circular or rectangular shape.

Here, the outer case 110 of step b) may be formed of reinforced plastic, steel, or aluminum.

The elastic coupling member 130 of the step b) is installed between the inner surface of the outer case 110 and the outer surface of the inner case 120 and the bottom surface of the outer case 110, And may be a plurality of springs installed between the lower surface of the base plate 120 and the lower surface of the base plate 120.

According to the present invention, a sensor for monitoring a concrete structure can be fixed without being exposed to the outside of a concrete structure by pre-embedding a sensor fixing device in a concrete structure in forming a concrete structure. Accordingly, the sensor is installed in the concrete structure to prevent damage to the sensor.

According to the present invention, a sensor fixing device for fixing a sensor can be buried and crushed into a preformed concrete structure.

According to the present invention, the sensor is buried in the concrete structure and is tightly adhered to the inside of the concrete by the high-strength elastic spring, so that the behavior data on the concrete structure can be acquired more accurately.

According to the present invention, it is unnecessary to perform a preliminary work for attachment when attaching the protruding sensor, and the aesthetic obstacle caused by the protruding sensor can be eliminated.

1 is a view showing that a sensor fixing device according to a conventional technique is mounted so as to protrude from a concrete structure.
2 is a view of an apparatus for securing a sensor to a support according to the prior art.
3 is a view showing a sensor fixing device embedded in a concrete structure according to an embodiment of the present invention.
4 is a plan view and a side view of a sensor fixing device embedded in a concrete structure according to an embodiment of the present invention.
5 is a view illustrating a shape of a sensor fixing device embedded in a concrete structure according to an embodiment of the present invention.
6 is a view showing a plurality of sensor fixing devices according to an embodiment of the present invention embedded in a concrete structure and connected to each other.
7 is a view showing that a protrusion is formed on a sensor fixing device according to an embodiment of the present invention and attached to a concrete structure.
8A to 8E are views showing a method of embedding a sensor fixing device in a concrete structure according to an embodiment of the present invention.
9 is a view showing that a sensor is installed after a sensor fixing device according to an embodiment of the present invention is embedded in a concrete structure.

Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings, which will be readily apparent to those skilled in the art. The present invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. In order to clearly illustrate the present invention, parts not related to the description are omitted, and similar parts are denoted by like reference characters throughout the specification.

Throughout the specification, when an element is referred to as "comprising ", it means that it can include other elements as well, without excluding other elements unless specifically stated otherwise.

[Sensor Fixing Device 100 Embedded in Concrete Structure 200]

FIG. 3 is a view showing a sensor fixing device embedded in a concrete structure according to an embodiment of the present invention, and FIG. 4 is a plan view and a side view of a sensor fixing device embedded in a concrete structure according to an embodiment of the present invention.

Referring to FIG. 3, a sensor fixing device 100 embedded in a concrete structure according to an embodiment of the present invention is a sensor fixing device to which a sensor for monitoring a concrete structure is fixed. The sensor fixing device 100 includes an outer case 110, 120, an elastic connecting member 130, and a cap 140.

First, the sensor 300 may be, but is not limited to, an acceleration sensor for monitoring the concrete structure 200, a displacement meter for measuring the moving distance of the structure, and a strain measuring sensor.

The inner case 120 is formed to correspond to the size and shape of the sensor 300 so that the sensor 300 is inserted and fixed. In this case, the inner case 120 is formed of an elastic rubber material so as to be easily expanded corresponding to the size and the shape of the sensor 300, and the shape of the inner case 120 is a shape of the sensor 300 But the present invention is not limited thereto. At this time, the height H2 and the width W2 of the inner case 120 are substantially equal to the height and the width of the plug 140.

The outer case 110 is attached to the concrete structure 200, and the inner case 120 is inserted therein. At this time, the outer case 110 may be made of reinforced plastic, steel, or aluminum, but is not limited thereto. The height H1 and the width W1 of the outer case 110 are larger than the height H2 and the width W2 of the inner case 120 according to the size of the inner case 120.

The elastic connecting member 130 is installed between the inner case 120 and the outer case 110 to resiliently fix the inner case 120 to the outer case 110. 4A and 4B, the elastic connecting member 130 is installed between the inner surface of the outer case 110 and the outer surface of the inner case 120, For example, a high-rigidity elastic spring, which is installed between the bottom surface of the outer case 110 and the bottom surface of the inner case 120. Accordingly, the inner case 120 can be detached or attached to the outer case 110 by the spring. In addition, the sensor 300 is embedded in the concrete structure 200, and is tightly adhered to the inside of the concrete by the high-rigidity elastic spring, so that the behavior data for the concrete structure 200 can be obtained more accurately.

The cap 140 serves to temporarily seal the inner case 120 to prevent the inflow of concrete when the concrete is poured. At this time, the stopper 140 corresponds to the shape of the inner case 120 and may be, for example, in the form of a bar.

Accordingly, the sensor 300 can be fixed so as not to be exposed to the outside when monitoring the concrete structure 200. That is, in the case of the sensor fixing apparatus according to the related art, the sensor fixing apparatus 100 embedded in the concrete structure according to the embodiment of the present invention is of a surface mount type, but it can be installed in a simple mounting form as a buried mounting type.

The sensor fixing device 100 embedded in the concrete structure according to the embodiment of the present invention can be embedded in the device when the external protruding type sensor such as an accelerometer is required to be embedded in the concrete in the process of casting concrete. In this case, the sensor fixing device 100 on which the spring 130 is mounted is mounted at predetermined positions and intervals before concrete is poured. When the sensor 300 is to be mounted, the sensor 300 is mounted on the sensor fixing device 100, And then remote monitoring can be performed.

If the sensor fixing device 100 is mounted after being crushed to a predetermined depth of the previously formed concrete structure, the outer case 110 and the inner case 120 May be all formed of an elastic rubber material.

5 is a view illustrating a shape of a sensor fixing device embedded in a concrete structure according to an embodiment of the present invention.

5 (a)), the shapes of the outer case 110a and the inner case 120a are the same as those of the first embodiment, Or the shape of the outer case 110b and the inner case 120b may be circular in correspondence with the shape of the sensor 300 or may be formed in a shape of the sensor 300 as shown in FIG. And may be formed in a rectangular shape correspondingly.

6 is a view showing a plurality of sensor fixing devices according to an embodiment of the present invention embedded in a concrete structure and connected to each other.

A plurality of sensors 100a to 100n may be installed on the concrete structure 200 and sensors 300a to 300b may be installed on the plurality of sensor fixing devices 100a to 100n, Can be installed. The plurality of sensor fixing devices 100a to 100n are continuous concrete pre-embedded devices pre-fitted to the concrete structure 200 at proper intervals before concrete is poured. The plurality of sensor fixing devices 100a to 100n may be fixed at predetermined intervals, / 2, L / 4, etc.).

7 is a view showing that a protrusion is formed on a sensor fixing device according to an embodiment of the present invention and attached to a concrete structure.

7A and 7B, the protrusion 150 may be formed on the side surface of the outer case 110. The protrusion 150 may be formed on the side surface of the outer case 110, Are formed on side surfaces and bottom surfaces of the outer case 110 to be embedded in the concrete structure 200 so as to enhance the adhesion of the concrete when the concrete is poured. At this time, the protrusions 150 may be rectangular or triangular reinforcing bars, but the present invention is not limited thereto and may be formed in various shapes.

[Method for Embedding and Mounting the Sensor Fixing Device 100 in the Concrete Structure 200]

8A to 8E are views showing a method of embedding and mounting a sensor fixing device in a concrete structure according to an embodiment of the present invention, FIG. 9 is a perspective view of a sensor fixing device according to an embodiment of the present invention embedded in a concrete structure Fig.

A method for embedding and mounting a sensor fixing device in a concrete structure according to an embodiment of the present invention is a method for embedding and mounting a sensor fixing device to which a sensor for monitoring a concrete structure is fixed. A sensor fixing device insertion portion is formed in the concrete structure 200a before the concrete is placed so that the fixing device can be embedded.

Next, as shown in FIG. 8B, the sensor fixing device 100 including the outer case 110, the inner case 120, the elastic connecting member 130, the plug 140, Insert it into the sensor fixing device insertion part. As described above, the inner case 120 is formed of an elastic rubber material so as to correspond to the size and shape of the sensor 300, and the shape of the inner case 120 is a shape of the sensor 300 And are formed in a circular or rectangular shape correspondingly. The outer case 110 is made of reinforced plastic, steel or aluminum. The elastic coupling member 130 is installed between the inner side surface of the outer case 110 and the outer side surface of the inner case 120 and the bottom surface of the outer case 110, And a plurality of springs that are installed between the lower surfaces.

Next, as shown in FIG. 8C, when the inner case 120 of the sensor fixing device 100 is covered with the plug 140, the concrete is laid so that the outer case 110 is embedded, 200b. At this time, the projection 150 of the sensor fixing device 100 is embedded in the concrete structure 200b after the concrete is laid.

Next, as shown in FIG. 8D, the cap 140 of the sensor fixing device 100 is removed, and then, the sensor 300 is inserted into the inner case 120, as shown in FIG. 8E Fixed. Accordingly, the sensor 300 is fixed so as not to be exposed to the outside when the concrete structure 200 is monitored.

When the sensor fixing device 100 is installed after being crushed to a predetermined depth of the preformed concrete structure, the outer case 110 and the inner case 120 May be all formed of an elastic rubber material.

9, the sensor fixing device 100 according to the embodiment of the present invention is inserted and fixed in the inner case 120 and connected to the remote sensor monitoring unit 400 by wire or wireless, The structure can be monitored.

As a result, according to the embodiment of the present invention, the sensor fixing device is embedded in the concrete structure before the concrete structure is formed, so that the sensor for monitoring the concrete structure can be fixed to the outside of the concrete structure. Accordingly, the sensor is installed in the concrete structure to prevent damage to the sensor. In addition, the sensor is embedded in the concrete structure and reinforced and tightly adhered to the concrete by the high-rigidity elastic spring, so that the behavior data on the concrete structure can be obtained more accurately. In addition, a sensor fixing device for fixing the sensor can be embedded and dismantled by crushing the formed concrete structure, and further, there is no need for a preliminary work for attachment when the protruding sensor is attached, and the aesthetic obstacle caused by the protruding sensor Can be removed.

It will be understood by those skilled in the art that the foregoing description of the present invention is for illustrative purposes only and that those of ordinary skill in the art can readily understand that various changes and modifications may be made without departing from the spirit or essential characteristics of the present invention. will be. It is therefore to be understood that the above-described embodiments are illustrative in all aspects and not restrictive. For example, each component described as a single entity may be distributed and implemented, and components described as being distributed may also be implemented in a combined form.

The scope of the present invention is defined by the appended claims rather than the detailed description and all changes or modifications derived from the meaning and scope of the claims and their equivalents are to be construed as being included within the scope of the present invention do.

100, 100a to 100n: sensor fixing device
200: Concrete structure
300, 300a to 300n:
400: remote sensor monitoring unit
110: outer case
120: inner case
130: Elastic connecting member
140: Plug
150:
200a: Concrete structure before pouring
200b: Concrete structure after pouring

Claims (13)

1. A sensor fixing apparatus to which a sensor for monitoring a concrete structure is fixed,
An inner case 120 formed to correspond to the size and shape of the sensor 300 so that the sensor 300 is inserted and fixed;
An outer case 110 attached to the concrete structure 200 and into which the inner case 120 is inserted;
An elastic connecting member 130 installed between the inner case 120 and the outer case 110 to elastically fix the inner case 120 to the outer case 110;
A cap 140 for temporarily sealing the inner case 120 to prevent the inflow of concrete when the concrete is poured; And
A protrusion 150 formed on a side surface and a lower surface of the outer case 110 to be embedded in the concrete structure 200 to enhance the adhesion of the concrete when the concrete is poured,
, ≪ / RTI &
Wherein the sensor (300) is fixed so as not to be exposed to the outside during the monitoring of the concrete structure (200). The method according to claim 1,
Wherein the inner case (120) is formed of an elastic rubber material to correspond to the size and shape of the sensor (300). The method according to claim 1,
Wherein the shape of the inner case (120) is formed in a circular or rectangular shape corresponding to the shape of the sensor (300). The method according to claim 1,
Wherein the outer case (110) is made of reinforced plastic, steel or aluminum. The method according to claim 1,
The elastic connecting member 130 is installed between the inner surface of the outer case 110 and the outer surface of the inner case 120 and between the bottom surface of the outer case 110 and the bottom surface of the inner case 120 Wherein the plurality of springs are installed in the concrete structure. 6. The method of claim 5,
Wherein the inner case (120) is detached or attached to the outer case (110) by the spring. The method according to claim 1,
The outer case 110 and the inner case 120 are all made of elastic rubber so that the sensor fixing device can be mounted irrespective of the state of the inside of the crushed concrete surface when the sensor fixing device is disassembled after a predetermined depth of the pre- And the sensor is fixed to the concrete structure. A method for embedding and mounting a sensor fixing device to which a sensor for monitoring a concrete structure is fixed,
a) forming a sensor fixing device insertion portion in the concrete structure 200a before the concrete is inserted so that the sensor fixing device can be embedded;
b) inserting the sensor fixing device 100 including the outer case 110, the inner case 120, the elastic connecting member 130, the cap 140 and the protrusion 150 into the sensor fixing device insertion portion ;
c) forming a concrete structure (200b) by placing concrete so that the outer case (110) is embedded while the inner case (120) of the sensor fixing device (100) is covered with the stopper (140); And
d) removing the cap 140 of the sensor fixing device 100 and inserting and fixing the sensor 300 into the inner case 120
, ≪ / RTI &
Wherein the sensor (300) is fixed so as not to be exposed to the outside during the monitoring of the concrete structure (200). 9. The method of claim 8,
Wherein the protrusion (150) of the sensor fixing device (100) is embedded in the concrete structure (200b) after the concrete is installed in the step c). 9. The method of claim 8,
The inner case 120 in the step b) is formed of an elastic rubber material so as to correspond to the size and shape of the sensor 300, and the shape of the inner case 120 corresponds to the shape of the sensor 300, Or a rectangular shape, wherein the sensor fixing device is embedded in the concrete structure. 11. The method of claim 10,
Wherein the inner case (120) is detached or attached to the outer case (110) by a spring. 9. The method of claim 8,
Wherein the outer case 110 of step b) is formed of reinforced plastic, steel or aluminum. 9. The method of claim 8,
The elastic connection member 130 of the step b) is installed between the inner surface of the outer case 110 and the outer surface of the inner case 120 and the bottom surface of the outer case 110 and the inner case 120 The method of claim 1, wherein the plurality of springs are installed between the lower surface of the base member and the lower surface of the base member.

Images