JP2018178644A - Levee raising structure - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a structure for raising an embankment capable of preventing water leak even when a water level at a front slope side is increased.SOLUTION: A structure for raising an embankment comprises: a foundation 12 and a foundation 13 provided on a top end 11a of an existing embankment 11; first water cutoff rubber packing 14 provided at a front slope side 11b on a top surface of the foundation 13; a height adjusting spacer 15 provided at a rear slope side 11c on the top surface of the foundation 13; a raising concrete block 16 disposed in a state in which a bottom surface of a bottom slab portion 16a is in contact with the first water cutoff rubber packing 14 and the height adjusting spacer 15; and a bonding material 17 provided in a clearance CL between the top surface of the foundation 13 and the bottom surface of the bottom slab portion 16a of the raising concrete block 16.SELECTED DRAWING: Figure 1

Description

  The present invention relates to a levee raising structure useful for levee raising.

  Patent Document 1 below discloses a structure related to levee raising. This structure is composed of a slit or sheath-like member provided at the top end of the existing dike, and a panel whose part is inserted into the slit or sheath-like member, and the raised part of the dike is produced by the exposed portion of the panel. It is done.

  However, when the water level on the surface side rises, the dike raising structure described above has a concern that a water leak may occur from the surface side to the back surface side through the insertion portion of the panel. There is also a concern that the part supporting the panel may collapse due to the leak and the panel may fall down.

JP, 2015-031068, A

  The problem to be solved by the present invention is to provide a levee raising structure capable of preventing water leakage from the front side to the back side even when the water level on the front side rises.

  In order to solve the above-mentioned subject, the embankment raising structure according to the present invention is provided on a foundation provided at the top end of the existing dike having a front slope and a back slope and the front side of the top surface of the foundation. The first water-proof rubber packing, the height adjustment spacer provided on the back slope side of the upper surface of the base, the bottom plate portion and the side plate portion are continuously provided, and the bottom plate portion A joint provided in a gap between a bulked concrete block installed with the lower surface in contact with the first water proof rubber packing and the height adjustment spacer, and the upper surface of the foundation and the lower surface of the bottom plate portion of the bulked concrete block Equipped with materials.

  According to the dike raising structure according to the present invention, even when the water level on the surface side rises, it is possible to prevent water leakage from the surface side to the back side.

FIG. 1 is a partial view of a levee raising structure according to a first embodiment of the present invention as viewed from the front side. FIG. 2 is a longitudinal sectional view taken along the line II-II of the dike raising structure shown in FIG. FIG. 3 is a longitudinal sectional view taken along the line III-III of the dike raising structure shown in FIG. FIGS. 4 (A) to 4 (C) are diagrams showing the cross-sectional shape of the first water-proof rubber packing shown in FIG. 1 and its modification. FIG. 5A to FIG. 5C are views showing the appearance shape of the height adjustment spacer shown in FIG. 1 and a modification thereof. FIG. 6 is an explanatory view of a method of constructing the levee raising structure according to the first embodiment. FIG. 7: is explanatory drawing of the construction method of the dike raising structure which concerns on 1st Embodiment. FIG. 8 is an explanatory view of a method of constructing the levee raising structure according to the first embodiment. FIG. 9 is a view corresponding to FIG. 2 showing a levee raising structure according to a second embodiment of the present invention. FIG. 10 is a view corresponding to FIG. 2 showing a levee raising structure according to a third embodiment of the present invention. 11 (A) to 11 (C) are explanatory views according to another embodiment of the first water-stop rubber packing.

First Embodiment (FIGS. 1 to 8)
First, the structure of the levee raising structure according to the first embodiment of the present invention will be described using FIGS. 1 to 5. In the following description, for convenience, the left side of FIGS. 2 and 3 is referred to as front, the right side is referred to as back, the left side of FIG. 1 is referred to as left, the right side is referred to as right, and the upper side of FIGS. In addition, the dimension in the front-rear direction is denoted as width, the dimension in the left-right direction as length, and the dimension in the vertical direction as height.

  The code | symbol 11 of FIGS. 1-3 is an existing dike, and has the ground end 11a leveled. The code | symbol 11b shows the facing of the existing dike 11, and the code | symbol 11c shows the back slope of the existing dike 11. As shown in FIG. A crushed stone foundation 12 and a concrete foundation 13 are provided on the top end 11a of the existing dike 11 as a foundation. The lengths of the crushed stone foundation 12 and the concrete foundation 13 correspond to the number of rows of raised concrete blocks 16 described later. Although the upper surface of the concrete foundation 13 is shown to be flush with the top end 11a in FIGS. 1 to 3, the top surface of the concrete foundation 13 does not have to be flush with the top end 11a.

  The code | symbol 14 is 1st water-stop rubber packing, and is provided in the surface slope 11b side of the upper surface of the concrete foundation 13. As shown in FIG. As a material of the first water-stopping rubber packing 14, natural rubber and the like can be used in addition to synthetic rubbers such as chloroprene rubber, nitrile rubber and ethylene propylene rubber, but it is preferable to use synthetic rubber having water expansibility. In addition to the rectangular shape shown in FIG. 4 (A), the cross-sectional shape of the first water blocking rubber packing 14 is a trapezoidal shape shown in FIG. 4 (B), an elliptical shape shown in FIG. 4 (C), etc. Can be used as appropriate. Furthermore, the length of the first water-stop rubber packing 14 corresponds to the number of rows of the raised concrete blocks 16 described later. Specifically, as the first water blocking rubber packing 14, one having a length corresponding to the length x number of rows of the side plate portion 16b of the raised concrete block 16 described later may be used, or more than this A plurality of short lengths may be used in a linear arrangement. Furthermore, the first waterproof rubber packing 14 is fixed to the upper surface of the concrete foundation 13 using an adhesive such as chloroprene rubber, epoxy resin, modified silicone resin or urethane resin.

  Reference numeral 15 denotes a height adjustment spacer, which is spaced from the first waterproof rubber packing 14 in the front-rear direction on the back slope 11c side of the upper surface of the concrete foundation 13 and in the alignment direction of bulked concrete blocks 16 described later A plurality of sets are provided. Incidentally, the number of height adjustment spacers 15 in contact with each of the raised concrete blocks 16 described later is two or more. The height adjustment spacer 15 is made of hardened mortar, hardened synthetic resin, or the like. In addition to the prismatic shape shown in FIG. 5A, the external shape of the height adjustment spacer 15 may be a truncated pyramid shape shown in FIG. 5B or a cylindrical shape shown in FIG. It can be used appropriately. Furthermore, the thickness of the height adjustment spacer 15 corresponds to the thickness of the first water-stop rubber packing 14 after installing the raised concrete block 16 described later. Furthermore, when the height adjustment spacer 15 is made of a hardened mortar, it is provided on the upper surface of the concrete foundation 13 by applying a mortar before hardening and hardening the mortar. On the other hand, when the height adjusting spacer 15 is made of a synthetic resin cured product, the prepared one is placed on the upper surface of the concrete foundation 13 without adhesion, or the prepared one is made of chloroprene rubber or epoxy resin or It adheres to the upper surface of the concrete foundation 13 by using an adhesive such as a modified silicone resin or urethane resin.

  The code | symbol 16 is a raised concrete block (precast concrete block), has the bottom plate part 16a and the side plate part 16b continuously, and has the rebar 16c inside. Incidentally, the illustrated raised concrete block 16 has a relationship of length of side plate portion 16 b> height of side plate portion 16 b> width of bottom plate portion 16 a. A plurality of the raised concrete blocks 16 are prepared, and the bottom plate portion 16a and the side plate portion 16b are in a state where the lower surface of each bottom plate portion 16a is in contact with the first waterproof rubber packing 14 and the plurality of height adjustment spacers 15. They are arranged side by side in the left-right direction (the length direction of the side plate portion 16 b) so as to face each other. In the installed state, a clearance CL based on the thickness of the first waterproof rubber packing 14 and the height adjustment spacer 15 between the upper surface of the concrete foundation 13 and the lower surface of the bottom plate portion 16a of each raised concrete block 16 (FIG. 7) ) Is formed. The bulking concrete block 16 is provided with a suspension fitting used when transporting by a crane or the like, and a connection fitting used when interconnecting the bulking concrete block 16 adjacent in the left-right direction. Illustration is omitted.

  The code | symbol 17 is a bonding material, and it is provided in the clearance gap CL (refer FIG. 7) of the upper surface of the concrete foundation 13 and the lower surface of the bottom plate part 16a of each raised concrete block 16. As shown in FIG. FIG. 3 shows the lower clearances (reference numeral omitted) of the third water blocking rubber packing 19 described later and the front clearances (reference numeral omitted) of the first waterproof rubber packing 14 also provided with the bonding material 17. However, the bonding material 17 is not necessarily provided in the lower gap of the third water blocking rubber packing 19 and in the front gap of the first water blocking rubber packing 14. For the material of the bonding material 17, grout, mortar or the like can be preferably used. Incidentally, the bonding material 17 has a role of connecting the lower surface of the bottom plate portion 16a of each raised concrete block 16 to the upper surface of the concrete foundation 13, and between the lower surface of the lower plate portion 16a of each raised concrete block 16 and the upper surface of the concrete foundation 13. Plays a role of enhancing the waterproofness of the first embodiment by cooperation with the first water proof rubber packing 14.

  In the method of providing the bonding material 17 in the clearance CL, (1) a method of injecting grout or mortar before hardening into the clearance CL after installing the raised concrete block 16 and hardening the same; and (2) raising the concrete It is possible to adopt any of the methods of applying grout or mortar before curing on the upper surface of the concrete foundation 13 before installing the block 16 and thereafter installing the raised concrete block 16 and curing it. The injection in the method (1) can be performed from the lower surface rear side of the bottom plate portion 16a through the space between the height adjustment spacers 15, and one or more injection holes previously formed in the bottom plate portion 16a of each raised concrete block 16 It can be done through holes (not shown).

  Reference numeral 18 denotes a second waterproof rubber packing, which is provided between the side plate portions 16b of the raised concrete blocks 16 adjacent in the left-right direction. As a material of the second waterproof rubber packing 18, natural rubber etc. can be used in addition to synthetic rubber such as chloroprene rubber, nitrile rubber, ethylene propylene rubber, etc. like the first waterproof rubber packing 14. It is preferable to use a synthetic rubber having In addition to the rectangular shape shown in FIG. 4 (A), the cross-sectional shape of the second water blocking rubber packing 18 is the same as the first water blocking rubber packing 14 but the trapezoidal shape or the figure shown in FIG. 4 (B) The elliptical shape shown in 4 (C) can be used as appropriate. Furthermore, the height (the dimension in the vertical direction) of the second waterproof rubber packing 18 substantially matches the height of the side plate portion 16 b of the raised concrete block 16. Furthermore, the second waterproof rubber packing 18 is made of chloroprene rubber, epoxy resin, modified silicone resin, urethane resin or the like on the left or right side of the side plate portion 16b of the raised concrete block 16 adjacent in the left and right direction. It is fixed using an adhesive.

  Reference numeral 19 denotes a third waterproof rubber packing, which is provided between bottom plate portions 16a of the raised concrete blocks 16 adjacent in the left-right direction. As a material of the third water blocking rubber packing 19, natural rubber etc. can be used in addition to synthetic rubbers such as chloroprene rubber, nitrile rubber and ethylene propylene rubber as in the first water blocking rubber packing 14. It is preferable to use a synthetic rubber having In addition to the rectangular shape shown in FIG. 4 (A), the cross-sectional shape of the third water blocking rubber packing 19 has a trapezoidal shape or a figure shown in FIG. 4 (B) as in the first water blocking rubber packing 14 The elliptical shape shown in 4 (C) can be used as appropriate. Furthermore, the width (the dimension in the front-rear direction) of the third water blocking rubber packing 19 is smaller than the width of the bottom plate portion 16 a of the raised concrete block 16. Furthermore, the third water-proof rubber gasket 19 is bonded to the left or right surface of one bottom plate portion 16a of the raised concrete block 16 adjacent in the left-right direction, such as chloroprene rubber, epoxy resin, modified silicone resin, urethane resin It is fixed using an agent.

  Next, in order to enhance the understanding of the configuration of the above-described dike raising structure, a method of constructing the above-described dike raising structure will be described mainly using FIGS. The construction method described here is an example, and does not limit the construction method of the above-described dike raising structure.

  When constructing the above-mentioned dike raising structure, as shown in FIG. 6, the top end 11a of the existing dike 11 is leveled, and a crushed stone foundation 12 and a concrete foundation 13 are provided on this top end. And while providing the 1st water-stop rubber packing 14 along the alignment direction of the bulking concrete block 16 on the surface 11b side of the upper surface of the concrete foundation 13, bulking concrete is carried out on the back slope 11c side of the top of the concrete foundation 13. A plurality of height adjustment spacers 15 are provided at intervals in the arrangement direction of the blocks 16.

  As described above, the first water-stop rubber packing 14 may have a length corresponding to the length x number of rows of the side plate portion 16 b of the raised concrete block 16 or may be more than this. A plurality of short lengths may be used in a linear arrangement. Further, the height adjusting spacer 15 may form a hardened mortar on the upper surface of the concrete foundation 13 and provide the same on the upper surface, or even if the hardened synthetic resin is placed on the upper surface of the concrete foundation 13 without adhesion. The cured synthetic resin may be fixed to the upper surface of the concrete foundation 13 using an adhesive.

  Then, as shown in FIG. 7, the first raised concrete block 16 transferred by a crane or the like is in contact with the first waterproof rubber packing 14 and the plurality of height adjustment spacers 15 on the lower surface of the bottom plate portion 16a. Install as you want.

  Then, as shown in FIG. 8, the second waterproof rubber packing 18 is fixed to the left surface of the side plate portion 16 b of the first raised concrete block 16 after installation using an adhesive, and the left surface of the bottom plate portion 16 a The third waterproof rubber packing 19 is fixed using an adhesive. The same adhesive is used to fix the second waterproof rubber packing 18 so that the lower surface of the second waterproof rubber packing 18 is in close contact with the upper surface of the first waterproof rubber packing 14, and the same adhesion is used when the third waterproof rubber packing 19 is fixed. An agent is used to ensure that the front face of the second seal is in close contact with the rear face of the second water proof rubber packing 18. When the material of the second water proof rubber packing 18 and the third water proof rubber packing 19 is a synthetic rubber having water expansibility, the lower surface of the second water proof rubber packing 18 and the upper surface of the first water proof rubber packing 14 It is not necessary to use an adhesive for the close contact and the close contact between the front surface of the third water proof rubber packing 19 and the rear surface of the second water proof rubber packing 18.

  Then, the second raised concrete block 16 (not shown) is placed on the left side of the first raised concrete block 16 shown in FIG. 8, and the lower surface of the bottom plate portion 16a is provided with the first waterproof rubber packing 14 and a plurality of higher ones. It is installed in contact with the height adjustment spacer 15. Then, move the second raised concrete block 16 to the right, and the side plate portion 16 b faces the side plate portion 16 b of the first raised concrete block 16 via the second waterproof rubber packing 18, and The bottom plate portion 16 a is positioned so as to face the side plate portion 16 b of the first raised concrete block 16 via the third waterproof rubber packing 19, and the second raised concrete block 16 is subjected to the first raised concrete block 16. Connect to

  Also after this, in the same manner as described above, the adhesion of the second waterproof rubber packing 18 and the third waterproof rubber packing 19 to the second and subsequent raised concrete blocks 16, the installation of the third and subsequent raised concrete blocks 16, and position adjustment And connection is performed until the required number of raised concrete blocks 16 is reached.

  Then, the bonding material 17 is provided in the gap CL (see FIG. 7) between the upper surface of the concrete foundation 13 and the lower surface of the bottom plate portion 16 a of each raised concrete block 16. As a method of providing the bonding material 17 in the gap CL, any of the method (1) and the method (2) described above may be adopted, but the surplus portion of the grout or mortar before hardening is of the bottom plate portion 16a. In order to prevent leakage from the lower surface rear side, a leakage preventing partition plate or the like may be installed on the lower surface rear side of the bottom plate portion 16a and removed after the operation. When the bonding material 17 is provided in the gap CL by the method (1) or the method (2), the excess of the grout or mortar before curing is the lower gap (the code is omitted,) Even if it enters into FIG. 3, since the third water-stop rubber packings 19 are present, the surplus does not leak upward from between the bottom plate portions 16 a of the raised concrete blocks 16 adjacent in the left-right direction. Above, the above-mentioned dike raising structure is constructed.

  Below, the effect obtained by the dike raising structure which concerns on 1st Embodiment is demonstrated.

  In the levee raising structure according to the first embodiment, the first waterproof rubber packing 14 is provided on the surface 11b side of the upper surface of the concrete foundation 13, and moreover, the upper surface of the concrete foundation 13 and the bottom plate of each raised concrete block 16 The bonding material 17 is provided in the gap CL with the lower surface of the portion 16a. That is, since the waterproofness between the lower surface of the bottom plate portion 16a of each raised concrete block 16 and the upper surface of the concrete foundation 13 is enhanced by the cooperation of the first waterproof rubber packing 14 and the bonding material 17, the surface method Even when the water level on the surface 11b side rises, it is possible to prevent water leakage from the front slope surface 11b side to the back slope surface 11c side through the lower surface side of the bottom plate portion 16a of each raised concrete block 16 It is also possible to prevent the support portion of each raised concrete block 16 from collapsing due to the leak and the raised concrete block 16 from falling down.

  Further, in the levee raising structure according to the first embodiment, the height adjustment spacer 15 is provided on the back slope 11c side of the upper surface of the concrete foundation 13, and each raised concrete block 16 has the bottom surface of the bottom plate portion 16a (1) It is installed in contact with the water blocking rubber packing 14 and the height adjustment spacer 15. That is, even when the first waterproof rubber packing 14 is provided on the upper surface of the concrete foundation 13, the installation posture of each raised concrete block 16 can be adjusted by the height adjustment spacer 15, so the water level on the front side 11b increases. At any time, the raised concrete blocks 16 can be prevented from falling down due to the influence of water pressure or the like.

  Furthermore, the embankment raising structure according to the first embodiment is provided with the second waterproof rubber packing 18 between the side plate portions 16 b of the raising concrete block 16 adjacent in the left-right direction. That is, since the waterproofness between the side plate portions 16b of the raised concrete blocks 16 adjacent in the left-right direction is enhanced by the second water proof rubber packing 18, even when the water level on the front slope 11b side rises, It is possible to prevent the occurrence of water leakage from the front side 11b to the back side 11c through the side plate portion 16b.

  Furthermore, in the dike raising structure according to the first embodiment, the third water blocking rubber packing 19 is provided between the bottom plate portions 16 a of the raised concrete blocks 16 adjacent in the left-right direction. That is, the waterproofness between the bottom plate portions 16a of the raised concrete blocks 16 adjacent in the left-right direction is enhanced by the third water proof rubber packing 19, and the method is combined with the gap CL by the method (1) or the method (2). When the material 17 is provided, it is possible to prevent the excess of the grout or mortar before hardening from leaking upward between the bottom plate portions 16 a of the raised concrete blocks 16 adjacent in the left-right direction.

  Furthermore, the embankment raising structure according to the first embodiment is provided with the first waterproof rubber packing 14 and the height adjusting spacer 15 on the upper surface of the concrete foundation 13, so installation of the raising concrete block 16 and after installation After repeating the fixing of the second water proof rubber packing 18 and the third water proof rubber packing 19 to the bulking concrete block 16 and the positional adjustment and connection of the bulking concrete block 16 after fixing, the work of providing the bonding material 17 is performed. By doing this, it is possible to efficiently construct a levee raising structure composed of the desired number of raised concrete blocks 16.

  In addition, in the dike raising structure according to the first embodiment, in order to stabilize the posture and position of each raised concrete block 16, the lining method is performed so as to cover the upper surface of the bottom plate portion 16a of each raised concrete block 16. Backfill soil 20 may be provided on the surface 11c side (see FIGS. 2 and 3).

  Moreover, in the dike raising structure according to the first embodiment, in order to improve the waterproofness between the side plate portions 16 b and the bottom plate portions 16 a of the raising concrete blocks 16 adjacent in the left-right direction, The front gap of the water blocking rubber packing 18 (reference numeral omitted, refer to FIG. 3), the rear gap of each second water blocking rubber packing 18 (reference code omitted, refer to FIG. 3), and the third water blocking rubber packing 19 A joint material (not shown) may be provided in the upper gap (reference numeral omitted, see FIG. 3). As the material of the joint material, in addition to mortar and grout, sealing materials such as modified silicones and polysulfides can be appropriately used.

Second Embodiment (FIG. 9)
FIG. 9 shows a levee raising structure according to a second embodiment of the present invention. The configuration of this levee raising structure is different from that of the dike raising structure according to the first embodiment,
-A point where a revetment concrete block 11d is laid on the surface 11b of the foundation embankment 11.-The concrete foundation 13 is excluded so that the crushed stone foundation 12 is partially overlapped with the top face of the revetment concrete block 11d. The point provided is that the front surface of the concrete foundation 13 and the front surface of the side plate portion 16b of each raised concrete block 16 are continuous with the front surface of the revetment concrete block 11d without any step. The other configuration is the same as that of the levee raising structure according to the first embodiment, and thus the description will be omitted using the same reference numerals.

  The dike raising structure according to the second embodiment is useful when applied to the dike on which the revetment concrete block 11 d is laid, and the foundation is to be simplified using the uppermost revetment concrete block 11 d. Can. The other effects are the same as those of the levee raising structure according to the first embodiment, and thus the description thereof will be omitted.

Third Embodiment (FIG. 10)
FIG. 10 shows a levee raising structure according to a third embodiment of the present invention. The configuration of this levee raising structure is different from that of the dike raising structure according to the first embodiment,
At least the lower portion of the front surface of the side plate portion 16 b of each raised concrete block 16 is covered by the backfill soil 21 provided on the surface 11 b side of the existing dike 11. The other configuration is the same as that of the levee raising structure according to the first embodiment, and thus the description will be omitted using the same reference numerals.

  The levee raising structure according to the third embodiment is each formed by the cooperation with the backfill soil 21 provided on the surface 11b or the backfill soil 20 on the back slope 11c described above. The attitude and position of the raised concrete block 16 can be stabilized. The other effects are the same as those of the levee raising structure according to the first embodiment, and thus the description thereof will be omitted.

Other Embodiments
(M1) As the first water blocking rubber packing 14 constituting each levee raising structure, a case having a length corresponding to the length x number of rows of the side plate portion 16b of the raising concrete block 16 is used In the case where a plurality of short lengths are linearly arranged and used, that is, the first waterproof rubber packing 14 in a form shared by a plurality of raised concrete blocks 16 has been described, a form not shared can also be adopted. .

  FIG. 11 shows an example of the first water-stop rubber packing 14 not shared by a plurality of raised concrete blocks 16. As shown in FIG. 11C, the first water blocking rubber packing 14 is slightly larger than the length of the side plate portion 16b of the raised concrete block 16, and both end portions thereof are bent upward. The non-folded portion of the first waterproof rubber packing 14 is fixed to the upper surface of the concrete foundation 13 using an adhesive, and both the folded portions 14a are respectively adhered to the left surface and the right surface of the side plate portion 16b after installing the raised concrete block 16. It is fixed using an agent.

  Further, as shown in FIGS. 11 (A) and 11 (B), of the raised concrete blocks 16 adjacent in the left-right direction, the second one corresponds to one of the raised concrete blocks 16 (see FIG. 11 (A)). (1) Water-stopping rubber packing 14 and the first water-stopping rubber packing 14 corresponding to the other raised concrete block 16 (see FIG. 11 (A) B) are offset in the front and back, and the bent portions 14a do not collide with each other It is supposed to be. Incidentally, as shown in FIG. 11A and FIG. 11B, the fixed positions of the second water proof rubber packing 18 and the third water proof rubber packing 19 are the same, but the second water proof rubber packing 18 The height (the dimension in the vertical direction) of is smaller by the height (the dimension in the vertical direction) of the bent portion 14a.

  That is, as shown in FIG. 11C, although the two bent portions 14a intervene between the side plate portions 16b of the raised concrete block 16 adjacent in the left-right direction, the position of the first waterproof rubber packing 14 Of the side plates 16b of the raised concrete block 16 correspond to the thickness of one bent portion 14a.

  (M2) As a raised concrete block 16 which constitutes each levee raising structure, the one having a relation of the length of the side plate portion 16b> the height of the side plate portion 16b> the width of the bottom plate portion 16b is shown. As long as it has the side plate portion 16 b and the side plate portion 16 b continuously, any other dimensional relationship can be used as the raised concrete block 16.

  (M3) For convenience of illustration, the width of the top end 11a of the existing dike 11 of each levee raising structure is not so much larger than the width of the bottom plate portion 11a of the raising concrete block 16, but the width of the top 11a Although it is larger than the illustrated width, each levee raising structure can be constructed appropriately. For example, when the width of the top end 11a of the existing embankment 11 is large, the width of the backfill soil 20 on the back slope 11c side or the back slope 11c side is changed by changing the construction position of each embankment raising structure. Both the width of the backfill soil 20 and the width of the backfill soil 21 on the surface 11b can be increased. In addition, when the width of the backfill soil 20 can be increased, it is also possible to construct a road on which the human being, a bicycle, a car or the like can pass.

  (M4) Although the thing which provided the height adjustment spacer 15 in the back side of the 1st water-stop rubber packing 14 as each embankment raising structure was shown, the 2nd height adjustment spacer similar to this height adjustment spacer 15 is shown. (Not shown) is provided on the front side of the first water proof rubber packing 14, and the bottom surface of the bottom plate portion 16a of the raised concrete block 16 is the first water proof rubber packing 14, the height adjustment spacer 15, and the second height adjustment You may make it install in the state which contacted the spacer.

  11: Existing embankment, 11a: Heaven end, 11b: Surface slope, 11c: Back slope, 11d: revetment concrete block, 12: crushed stone foundation, 13: concrete foundation, 14: first water proof rubber packing, 15: high Adjusted spacer, 16: Raised concrete block, 16a: Bottom plate portion, 16b: Side plate portion, 16c: Rebar, 17: Binding material, 18: Second water proof rubber packing, 19: Third water proof rubber packing, 20 ... Backfill soil on the back slope side, 21 ... backfill soil on the front slope side.

Claims (5)

A foundation provided at the top end of the existing dike having a bevel and a back slope,
A first waterproof rubber packing provided on the front surface side of the upper surface of the base;
A height adjustment spacer provided on the back slope side of the upper surface of the foundation;
A bulked concrete block having a bottom plate portion and a side plate portion continuously, and installed in a state in which the bottom surface of the bottom plate portion is in contact with the first water proof rubber packing and the height adjustment spacer;
And a bonding material provided in a gap between the upper surface of the foundation and the lower surface of the bottom plate portion of the raised concrete block.
Levee raising structure. The plurality of raised concrete blocks are provided, and the bottom plate portion and the side plate portion are arranged side by side so as to face each other.
The dike raising structure according to claim 1. The first water blocking rubber packing has a length corresponding to the number of rows of the raised concrete blocks.
The dike raising structure according to claim 2. The height adjustment spacer is provided in a plurality at intervals in the arranging direction of the raised concrete blocks,
The dike raising structure according to claim 2 or 3. A second water blocking rubber packing is provided between the side plate portions of the adjacent raised concrete blocks, and a third water blocking rubber packing is provided between the bottom plate portions.
The levee raising structure according to any one of claims 2 to 4.

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