JP6384715B2 - Steel core continuous wall cleaning device - Google Patents

Description

  The present invention relates to an apparatus for cleaning a core material of a steel underground wall.

  Conventionally, by having high cross-sectional performance, it is possible to construct underground continuous walls with a wall thickness of about 2/3 compared to underground continuous walls made of reinforced concrete, and it is possible to perform construction in a small space without the need for an on-site processing yard. As a city-type earth retaining method, the steel underground wall construction method has attracted attention.

  This steel underground continuous wall method is built in the ground while connecting steel continuous wall members (core material, steel element) with fitting joints, holds the hole wall with a stable liquid, and contains concrete inside. It is a method of building a wall body by filling

  Moreover, each steel connection wall member 1 (steel element 2) is, as shown in FIG. 7, a pair of wall plate portions (flange) 3 arranged in parallel and a length direction of the pair of wall plate portions 3. T1 is provided with a connecting plate portion (web) 4 that connects the approximate centers, and is formed into a substantially H shape (or a box frame shape having a plurality of connecting plate portions 4), and both side ends of each wall plate portion 3 The fitting joint 5 extending in the vertical direction T2 from the upper end to the lower end is formed on the part (see, for example, Patent Document 1 and Patent Document 2). And the steel wall 6 which has the some hollow part partitioned off by each connection board part 4 is constructed | assembled by fitting the adjacent fitting joints 5 and connecting the some steel continuous wall member 1. FIG. Further, by filling the hollow portions of the steel wall 6 with concrete 7 or the like, the steel underground continuous wall 8 is completed.

  On the other hand, in this steel underground continuous wall construction method, if the adhesion strength of the steel element 2 (steel continuous wall member 1) and the filled concrete is insufficient, the water stoppage and structural performance as the wall body are deteriorated. In the construction work, since the preceding element built in advance is held in a muddy water mixed with mud and stabilizing liquid for a long period of time, the end surface of the preceding element 2 (the connecting plate portion 4 and the wall plate) The mud film is strongly adhered to the part 3).

  For this reason, conventionally, as shown in FIGS. 8 and 9, the end face of the preceding element 2 and the joint 5 are cleaned using a cleaning device 10 having a brush 9 and a jet mechanism before the concrete 7 is placed. I am doing so. The cleaning device 10 is attached to a predetermined position of the apparatus main body 11, an apparatus main body 11 in which the steel member is assembled in a substantially rectangular frame shape, a brush 9 attached to the outer periphery of the apparatus main body 11, When the apparatus main body 11 is moved in the up and down direction T2 in the stabilizing liquid, the apparatus main body 11 includes an ejection nozzle (jet mechanism) 12 that ejects water toward the outside along with the movement. In the cleaning device 10, the end surface of the preceding element 2 can be cleaned with the brush 9 and the jet mechanism 12 by moving the device main body 11 in the vertical direction T <b> 2 while hanging and supporting the device main body 11 with the wire 14. (For example, refer to Patent Document 3).

JP 2004-360241 A Japanese Patent No. 4225669 Japanese Patent No. 3009846

  However, in the above conventional steel core continuous wall core material cleaning device 10, since it is configured to move in the vertical direction T <b> 2 while being suspended and supported by the wire 14, as shown in FIG. 9. In addition, the reaction force cannot be taken sufficiently. And since it will perform a cleaning operation | work, immersing in invisible muddy water, it is difficult to acquire a cleaning effect fully.

  Further, as shown in FIGS. 8 and 9, there is a case where a band plate-shaped reinforcing member 13 is provided on the fitting joint 5 side of the connecting plate portion 4 so as to be connected to the pair of wall plate portions 3. There is a possibility that the brush 9 may not reach the connecting plate portion 4 (end surface) of the portion P provided with 13. From this point, it is difficult to obtain a sufficient cleaning effect.

  In view of the above circumstances, an object of the present invention is to provide a core material cleaning device for a steel underground wall that enables reliable and effective cleaning of a steel element.

  In order to achieve the above object, the present invention provides the following means.

The steel ground continuous wall core material cleaning apparatus of the present invention is a device for cleaning the steel ground continuous wall core material, and a pair of wall plate portions in which the core material is arranged in parallel. formed with a fitting joint the side end portion of each wall plate with and a connecting plate portion connecting the wall plate portions and Rutotomoni, the said fitting joint side of the connecting plate portion An apparatus main body portion that is formed by connecting and reinforcing the wall plate portions and is provided with a band plate-like reinforcing member disposed at a predetermined interval in the vertical direction and supported by being suspended by wires. the includes a brush attached to an outer peripheral side of the main body portion, and a guide portion for guiding retractably said apparatus body in the vertical direction, the brush, the connection extends along a transverse direction A first brush and a second brush that are in contact with the plate portion and / or the wall surface of the wall plate portion, along the lateral direction. A third brush that extends and abuts against the reinforcing member, and the second brush protrudes from the front surface of the apparatus main body to the outside in the depth direction of the apparatus main body, and gradually lowers toward the front end in the protrusion direction. Alternatively, it is provided so as to be inclined upward, and the apparatus main body is moved in the vertical direction and enters between the one surface of the connecting plate portion and the reinforcing member, and the one surface of the connecting plate portion and the reinforcement of this portion The inclination angle is set so as to contact the back surface of the member .

  Further, in the core material cleaning device for a steel underground wall according to the present invention, the guide portion engages with the fitting joint and guides the device main body portion in the vertical direction along the fitting joint. It is desirable to be configured.

  In the core material cleaning device for a steel underground wall according to the present invention, the device main body is supported by the guide portion so as to be able to advance and retreat in the vertical direction. Therefore, when cleaning is performed by moving the device main body in the vertical direction. The reaction force can be ensured, and the brush can be reliably held in contact with one surface of the connecting plate portion or the like.

  Therefore, it is possible to perform a cleaning operation for removing the mud film adhering to the steel element reliably and efficiently, and to secure a desired adhesion strength between the steel element and the concrete. That is, it becomes possible to construct a steel underground continuous wall with high reliability.

It is a top view which shows the steel wall (steel element, core material) of the steel underground underground wall which concerns on 1st Embodiment of this invention. It is a figure which shows the core material cleaning apparatus of the steel underground underground wall which concerns on 1st Embodiment of this invention, and is the perspective view seen from the top which shows the state which is performing the cleaning operation | work. It is a figure which shows the core material cleaning apparatus of the steel underground continuous wall which concerns on 1st Embodiment of this invention, and is the figure seen from the side which shows the state which is performing the cleaning operation | work. It is a top view which shows the steel wall (steel element, core material) of the steel underground underground wall which concerns on 2nd Embodiment of this invention. It is a figure which shows the core material cleaning apparatus of the steel underground continuous wall which concerns on 2nd Embodiment of this invention, and is the perspective view seen from the top which shows the state which is performing the cleaning operation | work. It is a figure which shows the core material cleaning apparatus of the steel underground continuous wall which concerns on 2nd Embodiment of this invention, and is the figure seen from the side which shows the state which is performing the cleaning operation | work. It is a top view which shows the steel wall (steel element, core material) of the steel underground continuous wall. It is a figure which shows the core material cleaning apparatus of the conventional steel underground continuous wall, and is the perspective view seen from the top which shows the state which is performing the cleaning operation | work. It is a figure which shows the core material cleaning apparatus of the conventional steel underground continuous wall, and is the figure seen from the side which shows the state which is performing the cleaning operation | work.

  Hereinafter, with reference to FIGS. 1-3, FIG. 7, the core material cleaning apparatus of the steel underground continuous wall which concerns on 1st Embodiment of this invention is demonstrated.

  First, as shown in FIGS. 1 and 7, the steel underground continuous wall 8 of the present embodiment is continuously constructed in the ground as a retaining wall, a water blocking wall, a retaining wall combined main body, or the like. .

  Such a steel underground continuous wall 8 is formed by, for example, forming an excavation groove for forming an underground continuous wall in the ground using a stable liquid excavation method, and replacing the conventional H-shaped steel used for the underground continuous wall. The steel continuous wall member 1 (steel element 2) is built in the stable liquid of the excavation groove as a core material. The steel continuous wall member 1 includes a pair of wall plate portions (flange) 3 arranged in parallel and a connection plate portion (web) 4 for connecting the wall plate portions 3 to each other. The side end portion is formed with a fitting joint 5 extending in the vertical direction T2.

  Furthermore, in the steel continuous wall member 1 of this embodiment, the reinforcement member 13 which is arrange | positioned in the position of the fitting joint 5 side rather than the connection board part 4, and connects and reinforces the wall board parts 3 is provided. ing. The reinforcing member 13 is a strip-shaped steel plate, and a plurality of reinforcing members 13 are provided at predetermined intervals in the vertical direction T2.

  And, while inserting the steel continuous wall member 1 into the stabilizing liquid of the excavation groove formed in the ground, and fitting and connecting to the fitting joint 5 of the steel continuous wall member 1 of the preceding element 2, The steel continuous wall members 1 of the succeeding elements 2 adjacent to each other are sequentially inserted. By filling the hollow portions of the connected steel elements 2 with the concrete 7 and solidifying it, the steel underground wall 8 is completed.

  On the other hand, when constructing the steel underground continuous wall 8 by placing the concrete 7 inside the steel element 2, the surface 4a of the connecting plate portion 4 of the steel element 2 and the wall plate portion 3 are formed by a cleaning device. Clean the surface (inner surface) 3a and the like. As a result, the steel element 2 is retained in a state where it is immersed for a long time in the muddy water in which mud and stabilizing liquid are mixed, thereby removing the mud film adhering to the surface of the steel element 2 and Adhesive strength can be suitably secured.

  And the cleaning apparatus (core material cleaning apparatus of the steel underground continuous wall) A of this embodiment, as shown in FIG.2 and FIG.3, the apparatus main body part 20 suspended and supported by the wire 14, and the apparatus main body The brushes 21, 22, 23, 24, and 25 attached to the outer peripheral side of the unit 20, and a guide unit 27 for guiding the apparatus main body unit 20 so as to advance and retract in the vertical direction T <b> 2 are configured.

  Further, the apparatus main body 20 is formed in a rectangular box frame shape by assembling steel frames as vertical members and horizontal members, and the upper, middle, and lower steps of the rectangular frame in plan view are set in a predetermined direction in the vertical direction T2. It is formed in a three-stage structure connected by four vertical members at intervals. Furthermore, the upper stage part is provided with a plurality of wire connection parts 28 for detachably attaching the wire 14 and for supporting the apparatus main body part 20 in a stable state.

  The apparatus body 20 is provided with a jet nozzle 12. The jet nozzle 12 constitutes a jet mechanism and jets water in a desired direction.

  The guide portion 27 includes a pair of guide members 26 that protrude from the pair of side surfaces of the apparatus main body portion 20 outward in the width direction, bend at a right angle, and extend to the front side of the device main body portion 20. An engaging portion is provided at the tip of each guide member 26.

  On the other hand, the brush is composed of five types of brushes: a first brush 21, a second brush 22, a third brush 23, a fourth brush 24, and a fifth brush 25.

  The first brush 21 protrudes from the front surface of the apparatus main body 20 to the substantially horizontal outer side in the depth direction of the apparatus main body 20, and uses a long-hair brush so as to contact the one surface 4 a of the connecting plate 4 and clean this portion. Configured.

  The second brush 22 protrudes from the front surface of the apparatus main body 20 to the outside in the depth direction of the apparatus main body 20, and is provided so as to be gradually inclined downward or upward as it approaches the front end in the protrusion direction. Then, when the apparatus main body 20 is moved in the vertical direction T <b> 2, it enters between the one surface 4 a of the connecting plate portion 4 and the reinforcing member 13, and the one surface 4 a of the connecting plate portion 4 of this portion or the back surface of the reinforcing member 13. It is comprised using the long-haired brush so that it may contact | abut and can be cleaned.

  The third brush 23 protrudes from the front surface of the apparatus main body 20 to the substantially horizontal outer side in the depth direction of the apparatus main body 20, and uses a short-hair brush so as to contact the surface of the reinforcing member 13 and clean this part. It is configured.

  The fourth brush 24 protrudes from the pair of side surfaces on the front surface side of the apparatus main body 20 to the outside in the substantially horizontal direction in the width direction of the apparatus main body 20, and is formed on the inner surface 3 a of the pair of wall plates 3 and the fitting joint 5. Each part is in contact with each other and can be cleaned.

  The fifth brush 25 protrudes from the pair of side surfaces on the rear surface side of the apparatus main body 20 to the substantially horizontal outer side in the width direction of the apparatus main body 20, and is configured to be able to clean the periphery of the fitting joint 5 and the like. Yes.

  And when performing the cleaning operation | work of the steel element 2 using the cleaning apparatus (core material cleaning apparatus of the steel underground continuous wall) A of the present embodiment configured as described above, the wire 14 is attached to the apparatus main body 20. The cleaning device A is suspended and transported to a predetermined position, and the engaging portions of the pair of guide members 26 are engaged with the pair of fitting joints 5 of the steel element 2.

  In this state, a guide portion 27 is configured by the pair of fitting joints 5 and the pair of engaging portions of the steel element 2, and the cleaning device A is guided by the pair of fitting joints 5 so as to be able to advance and retract in the vertical direction T2. Supported. And if the cleaning apparatus A is moved to the up-down direction T2, the mud film adhering to the one surface 4a of the connection plate part 4 will be removed by the 1st brush 21, and this part can be cleaned.

  Further, the second brush 22 protrudes outward from the front surface of the apparatus main body 20 and is gradually inclined downward or upward toward the front end in the protruding direction, so that the apparatus main body 20 is moved in the vertical direction T2. The second brush 22 automatically enters between the one surface 4 a of the connecting plate portion 4 and the reinforcing member 13 to remove the mud film on the one surface 4 a of the connecting plate portion 4 and the back surface of the reinforcing member 13.

  Moreover, the 3rd brush 23 which uses a short hair brush contact | abuts on the surface of the reinforcement member 13, and while the apparatus main body part 20 is moved to the up-down direction T2, this part can be cleaned. Further, the inner surface 3 a of the pair of wall plate portions 3 and the fitting joint 5 can be cleaned by the fourth brush 24. Further, the pair of fitting joints 5 and the vicinity thereof can be cleaned by the fifth brush 25.

  Furthermore, while moving the apparatus main body part 20 to the up-down direction T2, water is injected from the ejection nozzle 12 in a desired direction. And by spraying water toward the connection board part 4, the wall board part 3, and the reinforcement member 13, the removal of the mud film adhering to these surfaces can be performed.

  At this time, the cleaning device A of the present embodiment engages the pair of engaging portions of the guide member 26 with the pair of fitting joints 5 of the steel element 2, and can freely advance and retract in the vertical direction T <b> 2 by the guide portion 27. Therefore, even if the brush comes into contact with each part of the steel element 2, the reaction force is sufficiently ensured. That is, the cleaning device A does not move laterally with respect to the steel element 2 during cleaning, and each part of the steel element 2 can be reliably cleaned by a brush or a jet mechanism.

  Therefore, in the core material cleaning device A for the steel underground wall according to the present embodiment, the cleaning device A is fitted with a pair of fittings by the guide portion 27 including the pair of fitting joints 5 and the guide member 26 of the steel element 2. It is guided by the joint 5 and is supported so as to advance and retract in the vertical direction T2. Thereby, the reaction force at the time of cleaning by moving the cleaning device A in the vertical direction T <b> 2 can be secured, and the brush can be reliably held in contact with the one surface 4 a of the connecting plate portion 4.

  Therefore, a cleaning operation for removing the mud film attached to the steel element 2 can be reliably and efficiently performed, and a desired adhesion strength between the steel element 2 and the concrete 7 can be ensured. That is, it becomes possible to construct the steel underground continuous wall 8 with high reliability.

  Further, the apparatus main body 20 is provided with a second brush 22 that protrudes from the front surface of the apparatus main body 20 to the outside in the depth direction of the apparatus main body 20 and that gradually inclines downward or upward toward the front end in the protrusion direction. Is moved in the vertical direction T2 and the second brush 22 automatically enters between the one surface 4a of the connecting plate portion 4 and the reinforcing member 13 to remove the mud film on the one surface 4a of the connecting plate portion 4 and the back surface of the reinforcing member 13. Can be removed. Thereby, it becomes possible to reliably clean the space between the one surface 4a of the connecting plate portion 4 and the reinforcing member 13 that has conventionally been difficult to clean with the second brush 22.

  Further, since the third brush 23 of the short hair brush is provided, the third brush 23 comes into contact with the surface of the reinforcing member 13 and moves the apparatus main body 20 in the vertical direction T2 and cleans this portion. be able to.

  That is, the amount of cleaning in one cleaning operation is increased by the three-stage brush, and a reliable cleaning effect can be obtained. Moreover, the cleaning time can be shortened by increasing the amount of cleaning in one cleaning.

  Therefore, the cleaning operation for removing the mud film adhering to the steel element 2 can be performed more reliably and efficiently, and the highly reliable steel underground continuous wall 8 can be constructed.

  Next, with reference to FIGS. 4-6, FIG. 7, the core material cleaning apparatus of the steel underground continuous wall which concerns on 2nd Embodiment of this invention is demonstrated.

  Here, in the present embodiment, when the steel continuous wall member 1 is formed with the reinforcing member 13 that connects and reinforces the wall plate portions 3, the steel continuous wall member 1 of the core material is formed. The present invention relates to a cleaning device (a steel core continuous wall cleaning device for core material) B that is suitable for use in cleaning. For this reason, in this embodiment, the same code | symbol is attached | subjected with respect to the structure similar to 1st Embodiment, and the detailed description is abbreviate | omitted.

  As shown in FIGS. 4 and 7, the steel continuous wall member 1 of the steel underground continuous wall 8 of the present embodiment is fitted with a pair of wall plate portions (flange) 3 and a connecting plate portion (web) 4. A joint 5 is provided. A reinforcing member 13 is provided.

  On the other hand, as shown in FIGS. 5 and 6, the cleaning device B of the present embodiment includes a device main body 30 that is supported by being suspended by the wire 14, and brushes 31 and 32 attached to the outer peripheral side of the device main body 30. And a guide part 33 for guiding the apparatus main body part 30 so as to be movable forward and backward in the vertical direction T2.

  The apparatus main body 30 is formed using a steel material, and the wire 14 is detachably attached to the upper end of the apparatus main body 30, and a plurality of wire connection sections 28 are provided to suspend and support the apparatus main body 30 in a stable state. Yes.

  Moreover, the guide part 33 of this embodiment is provided with the guide member 34 arrange | positioned in the up-down direction T2 in the state which attached to the connection board part 4 of the steel continuous wall member 1 so that attachment or detachment was possible, and was inserted in the stabilizer. By engaging an engaging portion provided in the apparatus main body 30 with the guide member 34, the apparatus main body 30 is guided by the guide member 34 and supported so as to be able to advance and retract in the vertical direction T2. Further, in the present embodiment, a pair of guide members 34 are provided at a predetermined interval, and a pair of engaging portions that engage with the respective guide members 34 are provided in the apparatus main body portion 30.

  The brush protrudes from the front surface of the apparatus main body 30 to a substantially horizontal lateral direction, comes into contact with the one surface 4a of the connecting plate part 4 and cleans this portion, and from the rear surface of the apparatus main body 30. A seventh brush 32 protrudes outward in a substantially horizontal lateral direction and abuts against the back surface of the reinforcing member 13 to clean this portion.

  And when cleaning work of the steel element 2 using the cleaning apparatus (core material cleaning apparatus of the steel underground continuous wall) A having the above-described configuration, the guide member 34 is installed and predetermined. In addition to being installed at the position, the wire 14 is connected to the apparatus main body 30 to suspend the cleaning device B and transport it to a predetermined position to engage the pair of engaging portions with the guide member 34.

  In this state, the cleaning device B is guided by the guide member 34 and supported so as to freely advance and retract in the vertical direction T2. And if the cleaning apparatus B is moved to an up-down direction, the 6th brush 31 will remove the mud film adhering to the one surface 4a of the connection board part 4, and this part can be cleaned. Further, the seventh brush 32 comes into contact with the back surface of the reinforcing member 13 so that this portion can be cleaned.

  Therefore, in the core material cleaning device B of the steel underground wall according to this embodiment, the cleaning device B is supported by the guide portion 33 so as to be able to advance and retract in the vertical direction T2. Accordingly, the reaction force when the cleaning device B is moved in the vertical direction T2 can be secured, and the brushes 31 and 32 are securely held in contact with the one surface 4a of the connecting plate portion 4 or the like. Can do.

  Therefore, a cleaning operation for removing the mud film attached to the steel element 2 can be reliably and efficiently performed, and a desired adhesion strength between the steel element 2 and the concrete 7 can be ensured. That is, it becomes possible to construct the steel underground continuous wall 8 with high reliability.

  Further, when the cleaning device B is moved in the vertical direction T2, the mud film attached to the one surface 4a of the connecting plate portion 4 can be removed by the sixth brush 31, and at the same time, the back surface of the reinforcing member 13 by the seventh brush 32. The mud film can be removed. Thereby, it becomes possible to reliably clean the space between the one surface 4a of the connecting plate portion 4 and the reinforcing member 13 that has been difficult to clean with the sixth brush 31 and the seventh brush 32.

  Further, similarly to the first embodiment, if the nozzles are provided in the vicinity of both ends of the cleaning device B so that water can be sprayed in a desired direction, the connecting plate portion 4 and the wall plate portion 3 are more effectively provided. The mud film adhering to the surface of the reinforcing member 13 can be removed.

  Therefore, the cleaning operation for removing the mud film adhering to the steel element 2 can be performed more reliably and efficiently, and the highly reliable steel underground continuous wall 8 can be constructed.

  As mentioned above, although 1st, 2nd embodiment of the core material cleaning apparatus of the steel underground continuous wall which concerns on this invention was described, this invention is not limited to said 1st, 2nd one embodiment. It can be changed as appropriate without departing from the spirit of the invention.

1 Steel continuous wall member (core material)
2 Steel elements (leading element, trailing element)
3 Wall plate (flange)
3a Inner surface 4 Connecting plate (web)
4a One surface 5 Fitting joint 6 Steel wall 7 Concrete 8 Steel underground continuous wall 9 Brush 10 Conventional cleaning device 11 Device main body 12 Jet nozzle (jet mechanism)
13 Reinforcing member 14 Wire 20 Device main body 21 First brush 22 Second brush 23 Third brush 24 Fourth brush 25 Fifth brush 26 Guide member 27 Guide portion 28 Wire connecting portion 30 Device main body 31 Sixth brush 32 7th Brush 33 Guide portion 34 Guide member A Cleaning device (Steel material cleaning device for continuous wall of steel underground wall)
B Cleaning device (core material cleaning device for steel continuous wall)
T1 Length direction T2 Vertical direction

Claims (2)

An apparatus for cleaning a core material of a steel underground wall,
The core material, Ru is formed with a fitting joint the side end portion of each wall plate with and a connecting plate portion connecting the parallel with said wall plate portions and a pair of wall plate portion to be disposed In addition, the wall plate portions are connected and reinforced on the side of the fitting joint with respect to the connection plate portion, and formed with a band plate-shaped reinforcing member disposed at a predetermined interval in the vertical direction. Has been
An apparatus main body supported by being suspended by a wire;
A brush attached to the outer peripheral side of the apparatus main body,
A guide portion for guiding the apparatus main body portion so as to freely advance and retract in the vertical direction ;
The brush extends along the lateral direction and extends along the lateral direction to the reinforcing member and the first brush and the second brush that contact the wall surface of the connecting plate portion and / or the wall plate portion. A third brush that contacts,
The second brush protrudes from the front surface of the apparatus main body in the depth direction outside of the apparatus main body, and is gradually inclined downward or upward as it approaches the distal end in the protrusion direction, and the apparatus main body The inclination angle is set so as to move in the vertical direction and enter between the one surface of the connecting plate portion and the reinforcing member, and abut one surface of the connecting plate portion of this portion and the back surface of the reinforcing member. A device for cleaning the core material of a continuous wall made of steel. In the core material cleaning device of the steel underground wall according to claim 1,
The guide member engages with the fitting joint, and is configured to guide the device main body in the vertical direction along the fitting joint. Cleaning device.

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