JP7285385B1 - Support device for retaining wall panel in slope-stabilized retaining wall - Google Patents

Abstract

[Problem] When retaining wall panels arranged along the slope are temporarily supported by marking blocks fixed to the slope prior to the retaining wall panels until installation is completed, the slope and the back of the marking block To fix a marking block to a slope without being affected by the distance from A retaining wall panel (6) arranged above a slope (10) and installed on the slope (10) and a retaining wall panel (6) placed below the marking block (5) and supported by the marking block (5). In the slope stabilizing retaining wall 12 provided, the retaining plate 2 joined to and integrated with the back surface of the marking block 5 is arranged below the retaining plate 2, and the lower end is formed below the retaining wall panel 6. The support device 1 is composed of the supports 3 which are supported by the support surface 11 and which support the marking block 5 together with the retaining wall panel 6 on the support surface 11. The back surface of the holding plate 2 is connected to freely adjust the distance from and the angle with the back surface. [Selection drawing] Fig. 1

Description

The present invention is a marking block that is arranged along the slope and fixed to the slope prior to the retaining wall panel until the installation of the retaining wall panel that constitutes the retaining wall with the purpose of stabilizing the slope is completed. Retaining wall panels in a slope-stabilized retaining wall that are used to fix the marking block to the slope without being affected by the distance between the slope and the back of the marking block when temporarily supported by It relates to a support device.

When constructing a retaining wall by arranging retaining wall panels in the height direction along the slope for the purpose of stabilizing the slope formed by excavating (cutting) the ground against collapse, When the position of the retaining wall panel to be installed on the top tier is determined, the retaining wall panels are installed from the upper tier side to the lower tier side. In this case, the uppermost retaining wall panel, which is first installed on the slope, is installed and supported on the slope while being supported by the natural ground before cutting.

When installing a retaining wall panel on a slope using this method, if the retaining wall panel cannot be supported by the upper retaining wall panel, the retaining wall panel will be supported by the ground at its lower end. will be In this connection, it is necessary to excavate the natural ground while leaving the natural ground where the lower end of the retaining wall panel to be installed is located and forming a supporting surface such as a horizontal surface on the natural ground (Patent Documents 1 to 10). See Patent Document 5).

In response to these methods, an application was filed for a method of constructing a slope-stabilized retaining wall that enables the lower retaining wall panels to be supported by the upper retaining wall panels while the retaining wall panels are installed facing downward. A person has previously proposed (see Patent Literature 6).

In this method, a marking block capable of supporting the retaining wall panel placed directly below is fixed on the upper part of the slope ahead of the retaining wall panel, and the retaining wall panel is engaged with the marking block. , the retaining wall panels are supported by marking blocks.

Japanese Patent Application Laid-Open No. 7-34464 (claim 1, paragraphs 0005 to 0018, FIGS. 6 to 8) JP 2010-106433 A (Paragraph 0020, FIGS. 4 to 8) Japanese Patent Application Laid-Open No. 2012-246706 (claim 1, paragraphs 0012 to 0016, FIGS. 2 to 5) JP 2014-109189 A (claim 1, paragraphs 0002 to 0006, FIGS. 1 and 2) Japanese Unexamined Patent Application Publication No. 2015-1084 (Figs. 1 to 5) Japanese Patent No. 6746264 (claim 1, paragraphs 0009 to 0036, FIGS. 1 to 6)

However, when fixing the marking block that is fixed to the slope prior to the retaining wall panel, the distance from the slope to the marking block and the inclination angle of the slope are different for each installation location of the marking block , it may be necessary to shape the slope (ground leveling) prior to the installation of the marking block.

Based on the above background, the present invention makes it possible to eliminate or simplify shaping to the slope when the retaining wall panel is installed on the slope while the retaining wall panel is supported by the marking block. The present invention proposes a retaining wall panel supporting device that

The supporting device for the retaining wall panel in the slope-stabilizing retaining wall of the invention described in claim 1 is arranged above the slope with its axial direction directed along the upper part of the slope, and A slope stabilizing retaining wall comprising a marking block installed in a slope and a retaining wall panel disposed below the marking block and supported by the marking block,
a holding plate joined to the rear surface of the marking block and integral with the marking block; and a support disposed below the holding plate and having a lower end formed in the ground below the lower end of the retaining wall panel. a post that is supported by a surface and supports the marking block integrated with the holding plate on the support surface together with the retaining wall panel;
An adjustment plate capable of coming into contact with the slope surface is connected to the back side of the holding plate so as to freely adjust the distance from the back surface of the holding plate and the angle between the holding plate and the back surface. is a configuration requirement.

"A direction along the upper part of the slope" is the length direction when the retaining wall panels 6 are arranged in the length direction, and is mainly horizontal, but the direction is inclined with respect to the horizontal. There is also The “upper portion of the slope” basically refers to a corner portion on the uppermost longitudinal section of the slope 10 shown in FIG. The length direction of the retaining wall panel 6 (the direction along the top of the slope 10 ) is the axial direction of the marking block 5 . The marking block 5 is arranged on the slope 10 with its axial direction directed in the horizontal direction or the like. The width direction of the retaining wall panel 6 is the height direction along the slope 10 .

The marking block 5 is originally fixed to the slope 10 by embedding (fixing) a fixture (anchor) protruding from the back side thereof in the ground (Patent Document 6). However, in the present invention, when it is difficult to fix the marking block 5 to the slope 10 only by the fixing tool, the supporting device 1 uses the marking block 5 as the supporting surface 11 instead of the fixing tool. Since 1 serves as a temporary support, a fixture is not necessarily used.

In the retaining wall panel 6, the projections 62 and the recesses 54, and the recesses 61 and the projections 53, which are basically formed on the facing surfaces of the marking block 5, are fitted to each other in the directions facing each other. 6 engages the marking block 5 downward to support it (Patent Document 6). In the present invention, the marking block 5 is supported by a support device 1 which is supported by a support surface 11 . As shown in FIG. 10, the retaining wall panel 6 is fixed by inserting a reinforcing member 8 that penetrates the retaining wall panel 6 in the thickness direction into a drilled hole formed in the ground, and is embedded in the grout material. Thus, the state of being fixed to the slope 10 is permanently maintained.

The "retaining wall panel supported by the marking block" in claim 1 means that the retaining wall panel 6 is supported by the marking block 5 and the supporting device 1 as described above. However, the marking block 5 is supported by the support surface 11 via the support device 1, and the retaining wall panel 6 is supported by the marking block 5 supported by the support device 1 as shown in FIGS. , the retaining wall panel 6 is supported on the support surface 11 via the support device 1 through the marking block 5 .

After inserting the reinforcing member 8 into the ground, the retaining wall panel 6 is fixed and supported to the ground (slope 10) by the reinforcing member 8 fixed in the grout material. Since the marking block 5 supported by the support device 1 is in a state of being supported by the filling material filled between the back surface of the retaining wall panel 6 fixed to the natural ground and the slope 10, the reinforcing material After the insertion of 8 into the ground, the role of the support device 1 (pillar 3) supporting the marking block 5 is completed. The marking block 5 is fixed to the slope 10 after fixing the retaining wall panel 6 to the slope 10 with the reinforcing member 8 and filling the back surface of the retaining wall panel 6 with the filler.

As shown in FIGS. 8 and 9, the marking block 5 is installed prior to the slope 10 and supported by the support device 1, and the first stage (uppermost) retaining wall panel directly supported by this. The ground is excavated to install 6. The marking block 5 and the first stage retaining wall panel 6 are installed on the slope 10 formed at this time and supported by the supporting device 1 . An unexcavated natural ground is left under the slope 10 (retaining wall panel 6). The upper surface of the natural ground under this slope 10 becomes the support surface 11 . (Slope Stabilization) Retaining wall 1 consists of at least one marking block 5 and one retaining wall panel 6 supported by this marking block 5 .

The "holding plate joined to the back surface of the marking block and integrated with the marking block" means that the holding plate 2 directly or indirectly overlaps the slope side surface of the marking block 5 as shown in FIG. It means that they are joined by connecting tools 21 such as bolts and become part of the marking block 5 . The holding plate 2 becomes a part of the marking block 5 and is fixed to the slope 10 when the marking block 5 is fixed to the slope 10. - 特許庁A steel material is mainly used for the holding plate 2 and the post 3 described later, but the material is not particularly limited.

Below the holding plate 2 , a support 3 supported by the supporting surface 11 formed in the ground below the lower end of the retaining wall panel 6 is arranged, and the holding plate 2 is supported by the support 3 . The “supporting surface formed on the ground below the lower end of the retaining wall panel” means that the supporting surface 11 is formed below the position of the lower end of the retaining wall panel 6 supported by the marking block 5 and the supporting device 1 . Say something. The lower end of the column 3 is in direct or indirect contact with the support surface 11 and is supported by the support surface 11 (ground).

The post 3 is arranged below the holding plate 2, and it is only necessary to support the holding plate 2 in some form. By doing so, the holding plate 2 is supported by the struts 3 . After the marking block 5 and the retaining wall panel 6 are fixed to the slope 10, they may be embedded (buried) together with the retaining plate 2 in the filler filling the back side of the retaining wall panel 6. The struts 3 may also be joined (fixed) to the holding plate 2 .

In addition, for example, a supported portion 22 supported or held by the column 3 is connected or integrated with the holding plate 2 at a position other than the contact portion with the marking block 5, and the supported portion 22 is connected to the column. 3, the marking block 5 integrated with the holding plate 2 may be supported by the support surface 11 (claim 2). "The supported portion 22 is supported by the column 3" means that the supported portion 22 is directly or indirectly supported by the column 3, and "held by the column" means that the supported portion 22 is supported by the column 3. It means to be supported by being held or gripped by the pillar 3 . “Indirectly supported” means that the support plate 2 integrated with the supported portion 22 or the marking block 5 integrated with the support plate 2 is supported by the support 3 .

In this case, the column 3 has a length reaching from the supporting surface 11 to the holding plate 2 (claim 2), and the supported portion 22 is supported by the column 3 so as not to separate from the column 3. It should be supported. For example, if the column 3 is a hollow material, the supported portion 22 or the holding plate 2 or the like is placed downward on the upper end of the column 3 while the supported portion 22 is inserted into the column 3 as shown in FIGS. It is formed into a locking shape. When the supported portion 22 is inserted inside the column 3 , the holding plate 2 is stabilized against coming off the column 3 .

"The adjustment plate that can come into contact with the slope is connected to the back side of the holding plate" means that the adjustment plate 4 is on the slope 10 side of the holding plate 2 and the surface of the adjustment plate 4 on the slope 10 side is the slope 10. It means to be connected in a contactable state. "Contact" means that the adjustment plate 4 is entirely in contact with the slope 10 or partially in contact with the slope 10 .

"Adjustment of the distance from the back surface of the holding plate and adjustment of the angle with the back surface" means adjustment of the distance from the back surface of the holding plate 2 to the slope 10 (adjustment plate 4) and adjustment of the distance from the back surface of the holding plate 2 , means that the adjusting plate 4 is connected to the holding plate 2 in such a manner that the angle between the adjusting plate 4 and the surface of the holding plate 2 can be freely adjusted. Since the holding plate 2 to which the adjustment plate 4 is connected is integrated with the marking block 5 , the adjustment plate 4 is indirectly connected to the marking block 5 .

"Adjustment of the distance from the back surface of the holding plate to the slope surface" is, for example, as shown in FIGS. It is possible by adjusting the connection position such as the screwing position. "Angle adjustment" means that the adjustment plate 4 is rotatably connected to the bolt 41 in any direction by, for example, making the insertion hole for the bolt 41 formed in the adjustment plate 4 larger than the diameter of the bolt 41. It becomes possible by The term “bolt 41 or the like” is intended to include pins other than the bolt 41 and the like.

As described above, while supporting the holding plate 2 integrated with the marking block 5, the support 3 supports the load of the marking block 5 on the support surface 11 through the lower end of the support 3, so that the marking block 5 itself is supported. need not be fixed to the slope 10.

In addition, the adjustment plate 4 connected to the marking block 5 is connected to the holding plate 2 so that the distance from the back surface of the holding plate 2 and the angle to the back surface can be freely adjusted, so that the marking block 5 can be adjusted. Unlike the case of directly fixing the marking block 5 to the slope 10, the shaping work to the slope 10 for bringing the back surface of the marking block 5 into close contact with the slope 10 becomes unnecessary, and the marking block 5 and the supporting block 5 are required accordingly. The time required for installing the wall panel 6 is shortened.

When installing the column 3 on the support surface 11, for example, when forming the support surface 11 below the lower end of the retaining wall panel 6, as in the case where a construction error occurs, between the lower end of the column 3 and the support surface 11 When it is necessary to adjust the distance, a lifting device 30 for adjusting the height of the column 3 is detachably connected to the lower end of the column 3 (Claim 3). "The height of the column" refers to the installation height of the column 3 from the support surface 11, or the height from the support surface 11 to the upper end of the column 3. By adjusting this height, the height of the support surface 11 to the marking block 5 can be increased. The position is adjusted up to the installation position of .

For example, as shown in FIGS. 1 and 8, the lifting device 30 has a base plate 34 that contacts the support surface 11 and a shaft portion 31 that is connected to the base plate 34 and connected to the lower end of the column 3. The support surface 11 is a horizontal plane. Alternatively, the shaft portion 31 is connected (with a universal joint) to the base plate 34 so as to be rotatable in any direction so that the bottom surface of the base plate 34 can come into surface contact with the support surface 11 .

The lifting device 30 is composed of a shaft 31 made of steel, such as a steel rod having a male thread formed on the outer peripheral surface, which can be inserted into the inside of the cylindrical support 3, and a nut 32 with a handle 33 screwed into the male thread. As the handle 33 (nut 32) rotates around the axis (center) of the shaft portion 31, the handle 33 moves up and down with respect to the shaft portion 31, and accordingly the support 2 supported by the handle 33 or the nut 32 moves. The height of the column 3 is adjusted by moving up and down.

The support device includes a holding plate that is joined to and integrated with the back surface of the marking block, and is arranged below the holding plate, the lower end of which is supported by a supporting surface formed in the ground beneath the retaining wall panel, and the marking block is supported. The support surface supports the marking block itself, and the support surface supports the holding plate integrated with the marking block while supporting the load of the marking block on the support surface through the lower end of the support. no longer need to be fixed to

In addition, an adjustment plate that can come into contact with the slope is attached to the back of the holding plate so that the distance from the back of the holding plate and the angle to the back can be adjusted freely. Unlike when fixing to the surface, the back of the marking block does not need to be shaped to the slope to make it adhere to the slope, which shortens the time required to install the marking block and retaining wall panel. can do.

(a) is an elevational view showing the relationship between the support device, the marking block, and the retaining wall panel, and (b) is a sectional view taken along the line xx of (a). (a) is a plan view showing a manufacturing example of a holding member including a holding plate that constitutes the support device, (b) is an elevation view of (a), and (c) is a side view of (b). (a) is an elevational view showing a manufacturing example of a holding plate in the holding member shown in FIG. 2, and (b) is a side view of (a). (a) is an elevational view showing an example of manufacturing an adjusting plate connected to a holding plate, and (b) is an elevational view showing a supported portion that is fixed to the adjusting plate side of the holding plate and inserted into the column. FIG. (c) is an elevational view showing a nut for receiving a bolt for joining the holding plate to the marking block. (a) is a plan view showing how the holding member of the support device is joined to the back surface of the marking block, (b) is an elevation view of (a), and (c) is a cross section taken along line xx of (b). It is a diagram. (a) is a perspective view showing the surface side of the marking block shown in FIG. 1, and (b) is a perspective view showing the rear side (slope side) of the marking block of (a). (a) is an elevation view showing an example of manufacturing a retaining wall panel, the left side of the center line showing the front side, and the right side showing the rear side (slope side). (b) is a sectional view taken along line xx of (a), and (c) is a plan view of (a). It is the longitudinal cross-sectional view which showed a mode when the marking block was supported by the support surface using a support apparatus, and the marking block was temporarily fixed to the slope. It is the longitudinal cross-sectional view which showed a mode when the retaining wall panel was temporarily supported by the marking block as the next process of FIG. FIG. 10 is a longitudinal sectional view showing a state when the position of the lower end portion of the retaining wall panel is adjusted as the next step of FIG. 9;

FIG. 1 shows a marking block 5 placed on the top of the slope 10 shown in FIG. In a slope stabilizing retaining wall (retaining wall) 12 shown in FIG. 6 shows a configuration example of a support device 1 that is supported on a support surface 11 formed on the ground below.

The support device 1 is joined to the rear surface of the marking block 5 and integrated with the marking block 5 , and the holding plate 2 is arranged below the holding plate 2 , the lower end of which is below the lower end of the retaining wall panel 6 . The supporting surface 11 is formed in the support surface 11, and the marking block 5 integrated with the holding plate 2 is supported on the supporting surface 11 together with the retaining wall panel 6. An adjusting plate 4 shown in FIG. 4-(a), which can contact 10, is connected.

Before the holding plate 2 is joined with the marking block 5, it is manufactured as a holding member 20 having the holding plate 2 and the adjusting plate 4 as shown in FIG. The holding member 20 is connected to the adjustment plate 4 on the back side (slope 10) side of the flat holding plate 2, and is supported by the support column 3 by being inserted into the support column 3 or the like. It is manufactured in a state in which the support part 22 is joined. The supported portion 22 may be connected to the support 3 .

The axial length of the marking block 5 is equal to or longer than the length of one retaining wall panel 6 supported below the marking block 5.例文帳に追加The marking block 5 serves as a reference for positioning when installing one or more retaining wall panels 6, and mainly serves to temporarily support the retaining wall panel 6 immediately below. FIG. 5 shows a state in which the holding member 20 is combined with the marking block 5. In FIG. showing the situation.

5 for joining the holding plate 2 itself to the marking block 5 as shown in FIG. 2-(b). Through-holes 2a are formed at appropriate intervals in the axial direction, and through-holes 5a into which the connector 21 is inserted or screwed are formed at positions of the marking block 5 corresponding to the through-holes 2a. The drawing shows an example in which a bolt is used as the connector 21 .

In the drawing, as shown in FIG. 5, a vertical groove 51 is formed in the height direction from the upper surface side of the marking block 5 at a position corresponding to each insertion hole 5a, and a part of the vertical groove 51 in the depth direction is formed. , an insertion hole 5a passing through the marking block 5 is formed. A flat bar-shaped nut 52 shown in FIG. The connecting member 21 such as the bolt is screwed into the nut 52 .

As shown in FIG. 5-(a), a connector (bolt) 21 inserted into the insertion hole 2a from the side of the slope 10 is inserted through the insertion hole 5a of the marking block 5 and screwed into the nut 52 in the longitudinal groove 51. By doing so, the holding plate 2 (holding member 20 ) is joined to the marking block 5 .

As shown in FIG. 6, on the lower side of the surface side of the marking block 5, a convex portion 53, which is convex on the surface side, is provided for temporarily receiving (temporarily supporting) the retaining wall panel 6 when the retaining wall panel 6 is installed. is formed. The convex portions 53 are formed continuously or intermittently in the axial direction of the marking block 5 . The marking block 5 is installed on the slope 10 prior to the retaining wall panel 6 constituting the retaining wall 12 as shown in FIG. FIG. 6-(a) shows the front surface of the marking block 2 indicated by the solid line in FIG. 5 as viewed from a slightly oblique upper direction, and FIG. 6-(b) shows a rear obliquely upper direction.

By forming the convex portion 53 on the surface side of the marking block 5 , a relative concave portion 54 is formed above the convex portion 53 . In the longitudinal section of the marking block 5 when viewed in the axial direction, the cross-sectional shapes of the projections 53 and the recesses 54 are arbitrary, but the projections 62 of the retaining wall panel 6 to be described later correspond to the projections 53 of the marking block 5. For example, a polygonal shape or a curved surface, such that the convex portion 62 fits into the concave portion 54 and the concave portion 61 of the retaining wall panel 6 fits into the convex portion 53 in the thickness direction of the retaining wall panel 6 when engaged downward. formed into a shape.

As shown in FIG. 2, the adjusting plate 4 is connected to a bolt 41 protruding from the side of the slope 10, which is the rear side of the holding plate 2, by welding or the like so as to be movable in the axial direction of the bolt 41. As shown in FIG. The bolt 41 is fixed to the holding plate 2 by, for example, being screwed into a fixing hole 2b shown in FIG. be.

The shaft portion of the bolt 41 is inserted through the insertion hole of the adjustment plate 4 , and nuts 42 are screwed to the shaft portion on both sides of the adjustment plate 4 , so that the adjustment plate 4 can be freely moved in the axial direction of the bolt 41 . While being movable, it can be fixed (restrained) at any position in the axial direction of the bolt 41 . Further, since the insertion hole of the adjustment plate 4 is formed to be larger than the diameter of the shaft portion of the bolt 41, the inclination angle of the adjustment plate 4 about the shaft portion can be freely adjusted. The holding plate 2 is integrated with the marking block 5 before the marking block 5 is placed on the slope 10 as shown in FIGS. 1 and 5-(c). Note that the nut 42 is not necessary when the shaft portion (male screw) of the bolt 41 is screwed into the insertion hole of the adjusting plate 4 .

As shown in FIGS. 2-(a) and (c), the shaft portion of the bolt 41 passes through the adjustment plate 4 and protrudes from the rear surface of the adjustment plate 4 toward the slope 10 side. The bolt 41 passes through the adjusting plate 4 and is restrained to the adjusting plate 4 by nuts 42 arranged on both sides of the adjusting plate 4 in a state in which the length of protrusion from the adjusting plate 4 is adjusted.

On the back side of the holding plate 2, as shown in FIGS. 2-(a) to (c), a supported portion 22 directly supported or held by the column 3 is joined by welding or the like. The surface of the holding plate 2 is in contact with the rear surface of the marking block 5 , and the supported portion 22 is located on the rear side of the holding plate 2 . The axial direction of the supported portion 22 is substantially aligned with the axial direction of the column 3 .

The supported portion 22 may have any shape as long as it is supported by the column 3. For example, if the column 3 is a hollow cross-section material such as a steel pipe, the supported portion 22 may be a reinforcing bar, a flat bar, or the like that can be inserted into the column 3. of bar material is used. In that case, the supported portion 22 is inserted into the column 3 , and the lower end of the holding plate 2 or the adjusting plate 4 , or the lower end of the marking block 5 integrated with the holding plate 2 is placed on the upper end of the column 3 . Thus, the marking block 5 is supported by the support 3 together with the holding member 20 . As shown in FIG. 2, the supported portions 22 are fixed at a plurality of locations spaced apart in the lengthwise direction (axial direction) of the holding plate 2 .

The strut 3 can support the supported portion 22 of the holding plate 2, and may have a structure and shape that can support the marking block 5 together with the holding plate 2. are using. In this case, as shown in FIGS. 1 and 8, the support 3 is supported directly or indirectly on the supporting surface 11 under the retaining wall panel 6 at its lower end, and the supported portion 22 is inserted from its upper end while the support 3 is black at its upper end. The lower end of the extension block 5 is placed and supported. The strut 3 is arranged at a position corresponding to the arrangement position of the supported portion 22 .

If it is necessary to adjust the level of the lower end of the support 3 according to the construction state of the support surface 11, the height of the support 3 from the support surface 11 is adjusted at the lower end of the support 3 as shown in FIG. A lifting device 30 is detachably connected. The lifting device 30 is, for example, a jack base, which can be screwed into the cylindrical post 3 and is screwed into the shaft 31 made of steel, such as a steel bar having a male thread formed on the outer peripheral surface, and the male screw of the shaft 31. It consists of a nut 32 with a handle 33 and a base plate 34 that is connected to or integrated with the lower end of the shaft portion 31 . The upper part of the shank 31 may simply be inserted into the strut 2 .

When the shaft portion 31 is screwed into the post 3, the handle 33 (the nut 32) rotates about its axis so that the handle 33 moves up and down with respect to the shaft portion 31. Accordingly, the handle 33 is supported by the nut 32. The column 2 moves up and down. The lifting device 3 rests on the support surface 11 on a base plate 34 connected or joined to the lower end of the shaft portion 31 .

Here, a work procedure for supporting the marking block 5 on the support surface 11 by the support device 1 will be described with reference to FIGS. 8 to 10. FIG. When the marking block 5 is installed on the slope 10, the holding plate 2 integrated with the supported portion 22 is previously joined to the rear surface of the marking block 5 as shown in FIG. At this point, the position of the adjusting plate 4 with respect to the holding plate 2 has been adjusted, and the position of the adjusting plate 4 with respect to the bolt 41 is restrained by the nuts 42, 42 on both sides. 8 to 10, the support 3 appears to be in contact with the slope 10, but the support 3 may not be in contact with the slope 10 in some cases.

After forming the support surface 11 for supporting the support column 3, the support column 3 connected to the lifting device 30 is installed on the support surface 11 as shown in FIG. Adjust the installation position. At this time, the shaft portion of the bolt 41 penetrating the adjusting plate 4 is inserted into the ground.

Between the adjacent struts 3, 3, the distance between the lower ends of the struts 3, 3 is maintained while the marking block 5 is supported as shown in FIG. Tethers 7 are installed and connected to each column 3 to ensure stability. The tether 7 is connected to the strut 3 by a gripper 71 such as an orthogonal clamp.

When the retaining wall panel 6 is supported on the supporting surface 11 using the support device 1 and installed on the slope 10 , the load (mass) acting on the center of gravity of the retaining wall panel 6 is parallel to the axial direction of the support 3 . The component acts on the column 3 as a compressive force in the axial direction of the column 3 , and the component in the direction perpendicular to the axial direction of the column 3 acts on the column 3 so as to press the column 3 against the slope 10 . Therefore, unless the slope 10 is an inclined surface and the axial direction of the support 3 is not vertical, the stability of the support device 1 including the support 3 supporting the marking block 5 and the retaining wall panel 6 is not impaired. Therefore, the retaining wall panel 6 does not overturn to the opposite side of the slope 10.例文帳に追加Even if the axial direction of the column 3 is the vertical direction, if the base plate 34 has a sufficient area, the column 3 supporting the retaining wall panel 6 can be prevented from overturning.

After the marking block 5 is supported by the support surface 11 via the support device 1 and installed on the slope 10, the retaining wall panel 6 is temporarily supported by the marking block 5 as shown in FIG. At a position corresponding to the convex portion 53 of the marking block 5 on the upper side (upper side) of the back side of the retaining wall panel 6, as shown in FIG. A convex portion 62 having a convex back surface is formed on the concave portion 61 . The concave portion 61 and the convex portion 62 are also formed continuously or intermittently in the length direction of the retaining wall panel 6 .

The rear side of the upper side of the retaining wall panel 6 is combined facing the front side of the marking block 5 as shown in FIG. 9, or overlapped in the thickness direction. At this time, the retaining wall panel 6 is supported by the marking block 5 by engaging the convex portion 62 of the retaining wall panel 6 with the convex portion 53 of the marking block 52 downward, and the supporting surface is supported via the supporting device 1 . 11 supported. The projecting portion 62 of the retaining wall panel 6 fits into the recessed portion 54 of the marking block 5 in the thickness direction, and the projecting portion 53 of the marking block 5 fits into the recessed portion 61 of the retaining wall panel 6 in the thickness direction.

As shown in FIG. 6, on the convex portion 53 of the marking block 5 on which the retaining wall panel 6 overlaps, an insert 55 for joining the retaining wall panel 6 is provided at intervals in the axial direction of the marking block 5 in the thickness direction. is buried facing the At a position corresponding to the insert 55 of the retaining wall panel 6, an insertion hole 63 is formed through which a bolt to be screwed into the insert 55 is inserted, as shown in FIG. 7-(a). The marking block 5 shown in FIG. 6 and the retaining wall panel 6 shown in FIG. shows an example.

In this case, in order to ensure stability when supported by the marking block 5, the retaining wall panel 6 is arranged so as to straddle between the two marking blocks 5, 5 adjacent to each other in the axial direction of the marking block 5. In this relationship, the insert 55 of the marking block 5 is positioned near the center in the axial direction, and the insertion holes 63 of the retaining wall panel 6 are positioned near both sides of the retaining wall panel 6 in the longitudinal direction. The length direction of the retaining wall panel 6 is the axial direction of the marking block 5 . The retaining wall panel 6 is joined to the marking block 5 by screwing the bolt passing through the insertion hole 63 of the retaining wall panel 6 into the insert 55 of the marking block 5 as described later.

When the retaining wall panel 6 is viewed from the front side or the rear side, at one point in the center of the vertical surface, or at a plurality of points near the center line in the width direction, as shown in FIG. An insertion hole 64 is formed for the reinforcing member 8 to be fixed to pass through the retaining wall panel 6 in the thickness direction. The head portion of the reinforcing member 8 protruding from the surface of the retaining wall panel 6 is fixed around the insertion hole 64 on the surface of the retaining wall panel 6 .

When the retaining wall panels 6 are arranged in a plurality of stages in the height direction, the retaining wall panel 6 arranged on the lower side of the surface side of the retaining wall panel 6 (lower side) as shown in FIG. A concave portion 65 having a concave surface side is formed at a position corresponding to the convex portion 62 on the upper side of the , and a convex portion 66 having a convex surface side is formed at a position corresponding to the concave portion 61 below the concave portion 65. be.

In this case, the upper rear surface side of the retaining wall panel 6 located relatively on the lower side is combined facing the lower surface side of the retaining wall panel 6 adjacent to the upper side (overlapping in the thickness direction). ), the upper convex portion 62 of the retaining wall panel 6 positioned relatively downward engages the lower convex portion 66 of the retaining wall panel 6 adjacent to the upper side, and the upper convex portion It is supported by retaining wall panels 6 . The convex portion 62 of the lower retaining wall panel 6 fits into the concave portion 65 of the upper retaining wall panel 6 in the thickness direction, and the convex portion 66 of the upper retaining wall panel 6 fits into the lower retaining wall panel 63. is fitted in the recess 61 in the thickness direction.

The retaining wall panel 6 on the lower (lower) side is inserted through an insertion hole 63 formed at the position of the concave portion 61 on the upper side, for example, as shown in FIG. It is joined to the retaining wall panel 6 on the upper side by a bolt or the like that is screwed into an insertion hole (insert) 63 formed on the surface side of the portion 66 .

A filling material (backfilling material) such as mortar is filled between the back surface of the retaining wall panel 6 and the slope 10 for the purpose of stably fixing the retaining wall panel 6 to the slope 10. As shown in 7-(a) and (b), on the back surface of the retaining wall panel 6, a liquid stop material 67 is fixed (attached) by embedding or the like to prevent leakage of the filling material and to partition the filled area of the filling material. ) is done. Since the filling material is filled in the back surface of the retaining wall panel 6 which is installed vertically or inclined to the slope 10, the liquid stopping material 67 is attached to at least the lower side (lower side) of the retaining wall panel 6. be done. The filling material is filled above the retaining wall panel 6 through an injection hole 68 formed through the thickness direction.

As shown in FIG. 9 , after fitting the recess 61 and the projection 62 of the retaining wall panel 6 into the projection 53 and the recess 54 of the marking block 5 , the bolt passing through the insertion hole 63 of the retaining wall panel 6 is inserted into the marking block 5 . The retaining wall panel 6 is joined to the marking block 5 by screwing it into the insert 55 of the marking block 5 .

After joining the retaining wall panel 6 to the marking block 5, as shown in FIG. The position of the lower end of the retaining wall panel 6 in the thickness direction is adjusted using the adjusting material 69 that is overlapped and joined.

The attracting device 9 directly utilizes the tensile force between the ground and pulls the lower end portion of the retaining wall panel 6 toward the slope 10 side, or utilizes the tensile force as a reaction force to pull the retaining wall panel 6. It functions to push the lower end portion toward the slope 10 side. A fixing member 91 such as an anchor pin is fixed to the natural ground that takes the reaction force of the tensile force. A lever block (registered trademark) as shown in FIG. 10 is suitable for the attracting device 9 when using a tensile force.

In the case of the lever block (registered trademark), a hook 93 connected to one end of the chain 92 is connected to a connector 96 connected to the lower end of the retaining wall panel 6, and a hook 94 connected to the other end is a fixture. Tension is applied to the chain 92 by reciprocating the lever 95 while it is connected to the chain 91 . As tension is introduced to the chain 92, the distance between the hooks 93 and 94 is shortened, the lower end of the retaining wall panel 6 to which the adjusting material 69 is joined approaches the slope 10, and the installation angle of the retaining wall panel 6 is adjusted. and the height of the lower end is adjusted at the same time.

At this time, the convex portion 62 and the concave portion 61 on the upper portion of the retaining wall panel 6 are fitted to the concave portion 54 and the convex portion 53 of the marking block 5 respectively in the thickness direction of the retaining wall panel 6, and the convex portion 62 is fitted to the convex portion 53. , a portion of the load of the retaining wall panel 6 is supported by the support device 1 through the marking block 5.

After adjusting the installation angle of the retaining wall panel 6, the reinforcement member 8 is inserted through the insertion hole 64 of the retaining wall panel 6 using a drilling tool such as a double-pipe casing pipe. Form drilling holes. After or before inserting the reinforcing material 8 into the drilled hole, or at the same time, the drilled hole is filled with a grout material such as mortar, and the reinforcing material 8 is fixed in the drilled hole (in the grout material) by hardening the grout material. .

In parallel with or before or after fixing of the reinforcing material 8, the gap between the back surface of the retaining wall panel 6 and the slope 10 is filled (injected) with the filling material through the injection hole 68 of the retaining wall panel 6, thereby providing the retaining wall. A wall panel 6 is fixed to the slope 10 . The filler is substantially the same material as the grout that fills the drilled hole into which the reinforcement 8 is inserted. As shown in FIGS. 7 and 9, on the back surface of the retaining wall panel 6, a liquid-stopping material is applied to partition the filling area of the filling material and prevent leakage of the filling material from the filling area (chaotic outflow of the filling material). Since the (sealing material) 67 is fixed, when the grout material is filled into the drilled hole, the grout material as the filling material overflows (flows out) from the drilled hole and wraps around to the back side of the retaining wall panel 6. There is also

When installing the adjacent retaining wall panel 6 on the lower side of the retaining wall panel 6 after installation, the topmost retaining wall panel 6 is installed on the ground equivalent to the width (height) of the retaining wall panel 6 A new support surface 11 is formed by excavating downward from the original support surface 11 . Since the struts 3 of the support device 1 that supports the uppermost retaining wall panel 6 are embedded in the above-described filler, they are basically buried and only the lifting device 30 is recovered, and the lower retaining wall panel 6 is removed. At the time of installation, it is connected to the lower ends of the columns 3 newly installed on the new support surface 11 .

1 ... support device,
20: holding member, 2: holding plate, 2a: insertion hole, 2b: fixing hole, 21: connector (bolt), 22: supported portion,
3... Support, 30... Lifting device, 31... Shaft, 32... Nut, 33... Handle, 34... Base plate,
4……adjustment plate, 41……bolt, 42……nut,
5 Marking block 5a Insertion hole (for connector 21) 51 Vertical groove 52 Nut 53 Convex portion 54 Concave portion 55 Insert
6... Retaining wall panel, 61... (upper side) concave part, 62... (upper side) convex part, 63... (for bolt) insertion hole, 64... (for reinforcing material 8) insertion hole, 65... (lower side) concave portion, 66... (lower side) convex portion, 67... liquid stop material, 68... injection hole, 69... adjusting material,
7 ... tethering material, 71 ... gripping tool,
8 ...... Reinforcing material,
9... Attracting device, 91... Fixing tool, 92... Chain, 93... Hook, 94... Hook, 95... Lever, 96... Connecting tool,
10……Slope,
11 ... support surface,
12 Slope stabilization retaining wall (retaining wall).

Claims (3)

a marking block placed on the top of the slope with its axial direction directed along the top of the slope and installed on the slope; and the marking block placed below the marking block. A slope-stabilized retaining wall comprising a supported retaining wall panel,
a holding plate joined to the rear surface of the marking block and integral with the marking block; and a support disposed below the holding plate and having a lower end formed in the ground below the lower end of the retaining wall panel. a post that is supported by a surface and supports the marking block integrated with the holding plate on the support surface together with the retaining wall panel;
An adjustment plate capable of coming into contact with the slope surface is connected to the back side of the holding plate so as to freely adjust the distance from the back surface of the holding plate and the angle between the holding plate and the back surface. A supporting device for a retaining wall panel in a slope-stabilized retaining wall, characterized by: 2. The method according to claim 1, wherein the pillar has a length reaching from the support surface to the holding plate, and the holding plate has a supported portion supported or held by the pillar. Supporting device for retaining wall panels in face-stabilized retaining walls. 3. A retaining wall panel in a slope stabilizing retaining wall according to claim 1, wherein a lifting device for adjusting the height of said supporting column is detachably connected to the lower end of said supporting column. support device.

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