WO2005103393A1 - Bloc pour paroi de soutenement et son procede d’empilage en gradins - Google Patents

Bloc pour paroi de soutenement et son procede d’empilage en gradins Download PDF

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Publication number
WO2005103393A1
WO2005103393A1 PCT/JP2004/005648 JP2004005648W WO2005103393A1 WO 2005103393 A1 WO2005103393 A1 WO 2005103393A1 JP 2004005648 W JP2004005648 W JP 2004005648W WO 2005103393 A1 WO2005103393 A1 WO 2005103393A1
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WO
WIPO (PCT)
Prior art keywords
block
retaining wall
piece
block body
top end
Prior art date
Application number
PCT/JP2004/005648
Other languages
English (en)
Japanese (ja)
Inventor
Yoshio Suematsu
Toshimitsu Komatsu
Gug Seung-Gi
Original Assignee
Toeishokou Kabushiki Kaisha
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Toeishokou Kabushiki Kaisha filed Critical Toeishokou Kabushiki Kaisha
Priority to CNA2004800427976A priority Critical patent/CN1938483A/zh
Priority to PCT/JP2004/005648 priority patent/WO2005103393A1/fr
Publication of WO2005103393A1 publication Critical patent/WO2005103393A1/fr

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Classifications

    • E—FIXED CONSTRUCTIONS
    • E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02B—HYDRAULIC ENGINEERING
    • E02B3/00—Engineering works in connection with control or use of streams, rivers, coasts, or other marine sites; Sealings or joints for engineering works in general
    • E02B3/04—Structures or apparatus for, or methods of, protecting banks, coasts, or harbours
    • E02B3/12—Revetment of banks, dams, watercourses, or the like, e.g. the sea-floor
    • E02B3/14—Preformed blocks or slabs for forming essentially continuous surfaces; Arrangements thereof
    • E—FIXED CONSTRUCTIONS
    • E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
    • E02D29/00—Independent underground or underwater structures; Retaining walls
    • E02D29/02—Retaining or protecting walls
    • E02D29/0258—Retaining or protecting walls characterised by constructional features
    • E02D29/0266—Retaining or protecting walls characterised by constructional features made up of preformed elements

Definitions

  • the present invention relates to a retaining wall block and a method of stacking the retaining wall block.
  • revetments are designed in accordance with the revetment mechanics design method.
  • V Vertical load (kN)
  • a block body is formed with an opening on the upper and lower surfaces from the front 'rear wall and the left' right wall, and the left and right walls are stepped on the upper rear side.
  • the retaining wall block is made lighter by forming a step between the front top end surface and the rear top end surface. 0 693).
  • the retaining length of the retaining wall block is usually increased,
  • the amount of packing material to be filled into the wall block (the amount of packing) is to be increased, but this will increase the size of the retaining wall block itself and increase the unit price of the retaining wall block.
  • the cost of increasing the amount of stuffing material increases, which increases construction costs, and the amount of excavation of the ground increases by the length of the buttress, which also increases construction costs. There is a defect. '' Disclosure of the Invention
  • the present invention is provided with a block main body having a front wall and left and right side walls and formed at least in an upper surface opening, and a slide prevention piece attached to the block main body so as to protrude upward.
  • the anti-slip piece is inserted into the insertion hole formed on the top end face of the block main body, and the upper part protrudes upward from the top end face of the block main body.
  • the present invention provides a retaining wall block which prevents the block bodies to be stacked from sliding forward and allows the block bodies to move freely in the left-right direction.
  • the present invention is also characterized by the following configurations.
  • the anti-slip piece is in surface contact with a rod-shaped support piece formed so as to be inserted into the insertion hole, and a block body formed on top of the rod-shaped support piece and stacked directly above. And a surface contact abutting piece to be provided.
  • the surface contact abutment piece is rotatable around the axis of the rod-shaped support piece.
  • the present invention also has a feature in a method of stacking a retaining wall block constructed by stacking any of the retaining wall blocks described above.
  • a plurality of retaining wall blocks are laid next to each other in the left-right direction, and a plurality of retaining wall blocks are laid on these retaining wall blocks adjacent to each other in the left-right direction.
  • a pair of left and right anti-slip pieces with upper parts protruding upward from the left and right sides of the top end surface of each lower retaining block are stacked directly above each other for retaining walls. Block positioning and prevention of forward sliding of each retaining wall block.
  • a plurality of retaining wall blocks are laid adjacent to each other in the left-right direction, and a plurality of retaining wall blocks are laid on the retaining wall blocks adjacent to each other in the left-right direction in a stacked state. If the sliding safety factor is satisfied in this state, the top end face of each retaining wall block immediately below and / or each retaining wall block immediately below each adjacent retaining block.
  • the retaining blocks that are stacked one above the other should be positioned using anti-slip pieces with the upper part protruding upward from the top end face of the wall.
  • FIG. 1 is a cross-sectional side view of a retaining wall constructed by stacking retaining wall blocks according to a first embodiment of the present invention.
  • Figure 2 is a left side view of the retaining wall block.
  • Fig. 3 is a right side view of the retaining wall block.
  • Figure 4 is a plan view of the retaining wall block.
  • Figure 5 is a front view of the retaining wall block.
  • Fig. 6 is a rear view of the retaining wall block.
  • FIG. 7 is a cross-sectional view of FIG.
  • FIG. 8 is a cross-sectional view of FIG.
  • FIG. 9 is an explanatory view of a mounting state of a slide prevention piece.
  • FIG. 10 is a perspective view of the slip prevention piece.
  • Fig. 11 is an explanatory view of the mounting state of the lifting connection piece.
  • FIG. 12 is a front view of the lifting connection piece.
  • FIG. 13 is a perspective view of a slip prevention piece according to a second embodiment.
  • Fig. 14 is an illustration of retaining wall blocks arranged in a stack on a straight line.
  • FIG. 15 is an explanatory view of a retaining wall block that is curved in a forwardly convex shape and arranged in a stacked manner.
  • FIG. 16 is an explanatory view of a retaining wall block which is curved rearwardly concavely and stacked and stacked.
  • FIG. 17 is an explanatory view of a retaining wall block which is curved in a forwardly convex shape and arranged in a stacked manner.
  • FIG. 18 is an explanatory view of a retaining wall block that is curved rearwardly concavely and stacked and stacked.
  • FIG. 19 is an explanatory side view of a stack of retaining wall blocks according to a second embodiment.
  • FIG. 20 is an explanatory bottom view of the retaining wall block.
  • FIG. 21 is an explanatory diagram of a retaining wall block according to a third embodiment.
  • FIG. 22 is an explanatory view of a retaining wall block according to a fourth embodiment.
  • FIG. 23 is an explanatory diagram of a basic block as a second embodiment.
  • FIGS. 1 to 8 is a retaining wall block according to a first embodiment of the present invention.
  • the retaining wall block A has a block main body 1 and a block main body 1 projecting upward.
  • a sliding prevention piece 2 attached to the wall, and as shown in FIG. 1, the retaining wall Y is constructed by stacking.
  • J is the ground and Jk is the cut surface.
  • the block body 1 is formed in a cylindrical shape with upper and lower openings from the front and rear walls 3, 4 and the left and right side walls 5, 6. Is less than half the height of the front wall 3.
  • the block body 1 is made compact and lightweight.
  • joining portions 9 and 10 as left and right spacing holding pieces are formed to bulge outward and extend vertically.
  • the right joining portion 10 is formed with a joining ridge 10a extending vertically and having a semicircular arc cross section, and has tapered surfaces on the front and rear sides of the joining ridge 10a, respectively. 10b and 10c are formed.
  • the plurality of block bodies 1, 1 can be arranged in a connected state on substantially the same straight line extending in the left-right direction, as shown in FIG.
  • the joining ridge 10a of the mouth body l and the joining ridge 9a of the right block body 1 are fitted together.
  • the plurality of block bodies 1 are arranged in an arcuate line that curves forward and can be connected in the left-right direction.
  • the main body 1, 1 has a tapered surface 9c, 10c on the rear side, so that the radius of curvature can be set small until the two tapered surfaces 9c, 10c abut. Curve construction can be performed without causing interference.
  • the plurality of block bodies 1, 1 can be arranged in an arcuate shape that curves concavely backward, and can be connected in the left-right direction. Since the main body 1, 1 has the front tapered surfaces 9b, 10b, the radius of curvature can be set small until the two tapered surfaces 9b, 10 come into contact with each other. Curve construction can be performed without the need.
  • the block upper surfaces 13 and 14 are formed substantially flush with each other, so that the upper block main body 1 is mounted on both block upper mounting surfaces 13 and 14.
  • At least one of the front top end faces 5b, 6b of the left and right side walls 5, 6 and the top end faces 9d, 10d of the joints 9, 10 are substantially flush with the top end face 3a of the front wall 3.
  • Block mounting surfaces 13 and 14 can be formed.
  • Insert holes 11 and 11 are formed in the block mounting surfaces 13 and 14 described above, and in the present embodiment, as shown in FIG. Insert holes 11 and 11 are formed on the top end surfaces 9d and 10d of the joints 9 and 10 on the side through insert hole forming bodies 8 and 8, respectively, and extend vertically in each of the insert holes 11 and ⁇ .
  • the insertion hole forming body 8 has a cylindrical shape extending in the vertical direction. 6
  • the insertion hole forming bodies 8 and 8 are buried with the upper ends opened at the right and left joints 9 and 10 to form the main body 8a of each of the insertion hole forming bodies 8 and 8. , 8a are formed with insertion holes 11,11.
  • the anti-slip piece 2 is a bar-shaped support piece 2 a that extends vertically and is formed so that its lower part can be freely inserted and removed into the insertion hole 11.
  • a surface contact contact piece 2b formed in the upper part of the support piece 2a and brought into surface contact with the block body 1 stacked one above the other, and the surface contact contact piece 2b has a rectangular shape. It is formed in a plate shape.
  • the rod-shaped support piece 2a of the slide prevention piece 2 is inserted from above into the insertion hole 11 formed in the main body piece 8a of the formed body 8a of the insertion hole formed body 8, and the rod-shaped support piece 2a is inserted. It can be placed on the locking piece 8b.
  • the upper part of the rod-shaped support piece 2a protrudes upward from the top end face 9d (10d) of the joint 9 (10), and the surface contact contact piece 2b is continuously provided on the upper part.
  • the piece 2a is rotatable around its axis in the insertion hole 11.
  • the surface contact abutting piece 2b provided continuously on the upper part of the rod-shaped support piece 2a is rotatable 360 degrees around the axis of the rod-shaped support piece 2a, and the direction of the surface can be freely changed.
  • the front wall 3 of the block body 1 placed on the upper stage can be reliably brought into contact with the surface contact abutment piece 2b in a surface contact state, and the front wall 3a is brought into contact with the front contact abutment piece 2b.
  • the front lower part 3b of 3 can be received on the surface.
  • the insertion hole 11 can also be used as a connection hole when the block body 1 is lifted, and as shown in FIG. 24 can be attached.
  • the lifting connecting piece 24 forms a ring-shaped connecting piece 24b at the upper end of a bar-shaped connecting piece 24a extending in the vertical direction, while the connecting piece 7
  • a locking piece 24c is formed at the lower end of 24a, and a pressing piece 24d is fitted slidably up and down in the middle part of the connecting piece 24a, and the pressing piece 24d and the ring-shaped connecting piece 24b are A pressing spring 24e is wound around the outer peripheral surface of the connecting piece 24a and interposed therebetween.
  • Fig. 13 shows a slide prevention piece 2 as another embodiment, in which a hexagonal planar contact contact piece 2b is provided above a rod-shaped support piece 2a, and the same surface contact contact piece 2b is provided. There are six abutment surfaces 2c around it.
  • one of the six contact surfaces 2c formed around the surface contact contact piece 2b is connected to the front wall 3 of the block body 1 placed on the upper stage.
  • the front lower part 3b By contacting the front lower part 3b, the front lower part 3b can be received on the surface.
  • the slip prevention piece 2 is not required, even if the backing material U such as embankment or the body filling material D is rolled, there is a possibility that the block body 1 may slide forward. If the sliding prevention piece 2 is used as appropriate to prevent the sliding, it can effectively function for compaction of the back-filling material U and the body-filling material D by rolling.
  • the left and right side walls 5, 6 of the block body 1 are provided with center-of-gravity position adjusting holes 15, 16 and block inversion fulcrum recesses 17, 18, respectively. ing. That is, as shown in FIGS. 2, 3, and 7, a pair of left and right center-of-gravity position adjustment holes 15, 16 are formed at the rear portions of the left and right walls 5, 6. Holes 15 and 16 are aligned in the left-right direction and opened.
  • the front-rear center-of-gravity line C of the block body 1 can be positioned within the front-rear width of the joints 9 and 10. I have to. 8
  • the block tapered fulcrum recesses 17, 18 are formed on the rear tapered surfaces 9c, 10c formed at the joints 9, 10.
  • the reversing fulcrum recesses 17 and 18 are arranged on or near the front-rear center line C of the block body 1.
  • the block body 1 formed by turning the top and bottom (up and down) in a mold (not shown) is inserted into the pair of right and left fulcrum recesses 17 and 18 for paired block inversion. It can be easily flipped around a fulcrum pin (not shown).
  • both block reversing fulcrum recesses 17 and 18 can be used as connection holes when the block body 1 is lifted.
  • the basic block B shown in FIG. 1 is a basic block.
  • the basic block B is provided with a block body 20 and an anti-slip piece 2 attached to the block body 20 in a protruding manner upward.
  • the height of the block body 20 is formed to be approximately half the height of the block body 1 and the front and rear width of the block body 20 is The difference is that the front wall 21 and the rear wall 22 are formed at the same height, and the front wall 21 and the rear wall 22 are formed at the same height.
  • the block body 20 is filled with a packing material D such as chestnut stone, and the filled packing Material D is compacted by a compacting device (not shown).
  • a packing material D such as chestnut stone
  • the block body 1 of the retaining wall block A is linearly laid in the left-right direction to form the first block row L1.
  • each block body 1 the front wall 3 is placed on the block mounting surface of the lower block body 20, and the rear wall 4 is placed on the rear wall 22 and the left and right side walls of the lower block body 20.
  • the front lower part 3b of the front wall 3 is attached to the surface contact contacting pieces 2b, 2b of the pair of left and right anti-slip pieces 2, 2 protruding from the block mounting surface of the lower block body 20 from the rear.
  • the pair of left and right anti-sliding pieces 2, 2 can apply a sliding resistance Fr to the lower block main body 1, thereby reliably preventing the block main bodies 1 stacked in the upper stage from sliding. be able to. Therefore, the sliding safety factor Fs of the built retaining wall Y can be properly secured.
  • each block body put a packing material D such as chestnut stone and a backing material U up to the height of the rear wall 4.
  • a packing material D such as chestnut stone and a backing material U up to the height of the rear wall 4.
  • each block body 1 moves the front wall 3 above the lower block body 1 block.
  • the back wall 4 is placed on the backing material U, and the lower front part 3b of the front wall 3 is connected to the top end faces of the joints 9 and 10 of the lower block body 1.
  • the upper block body 1 can be easily positioned by contacting the surface contact abutment pieces 2b, 2b of the pair of left and right anti-slip pieces 2, 2 protruding from 9d, 10d from the rear. It is possible to improve the stacking work efficiency of the block body 1.
  • the pair of left and right anti-skid pieces 2, 2 can apply a sliding resistance force Fr to the lower block main body 1, thereby reliably preventing the block bodies 1 stacked in the upper stage from sliding. be able to. Therefore, the sliding safety factor Fs of the built retaining wall Y can be properly secured.
  • the stacking work efficiency of the block body 1 is improved by using the positioning function of the slide prevention piece 2. Can be done.
  • FIG. 15 In front of the retaining wall Y This will be described with reference to FIG. 16 (curved construction where the front side of the retaining wall Y is concave).
  • the block body 20 is filled with a packing material D such as chestnut stone, and the filled packing material D is compacted by a rolling device (not shown).
  • a packing material D such as chestnut stone
  • the block main body 1 On the block main body 20, the block main body 1 is laid along the virtual curved line so that the front side is convex (the front side is concave), and each block main body 1 is positioned at a required position.
  • the first block row L1 is formed.
  • the row of the block bodies 20 laid adjacent to each other in the left-right direction and the first block row L1 of the block body 1 laid next to each other in the left-right direction in a stacked state on top of each other Due to the different curvature radius of the upper row, the upper row is slightly displaced in the horizontal direction with respect to the lower row, and as the row becomes longer, the lower front sides of the left and right sides of the upper block body 1 There is a case where a problem may occur that the block cannot be mounted on two places on the top end face of the left and right side walls of the lower block main body 20.
  • the surface contact abutting pieces of the pair of left and right sliding prevention pieces 2 and 2 provided on the lower block body 20 if the block bodies 1 to be stacked do not satisfy the sliding safety factor Fs, the surface contact abutting pieces of the pair of left and right sliding prevention pieces 2 and 2 provided on the lower block body 20.
  • the position of the misalignment is calculated in advance so that the lower front part 3b of the upper block body 1 always comes into contact with both 2b and 2b, and the sliding resistance Fr can be added to the lower block body 20. Then, the arrangement of the lower block body 20 is set.
  • both the surface contact abutment pieces 2b and 2b of the pair of left and right anti-sliding pieces 2 and 2 provided on the lower block body 20 are provided. Then, the lower front part 3b of the upper block body 1 does not necessarily have to be brought into contact.
  • At least one suitable slip preventing piece 2 can be appropriately used as the positioning piece.
  • each block body put a packing material D such as chestnut stone and a backing material U up to the height of the rear wall 4.
  • a packing material D such as chestnut stone and a backing material U up to the height of the rear wall 4.
  • the lower surface of the lower block body 1 may not be placed on two places on the top end surfaces of the left and right side walls of the lower block main body 1 in some cases.
  • the surface contact abutting pieces 2b of the pair of left and right sliding prevention pieces 2, 2 provided on the lower block body 1 are provided. , 2b, so that the lower front part 3b of the upper block body 1 must be in contact with the lower block body 1 so that the sliding resistance force Fr can be added to the lower block body 1.
  • the block body 1 to be stacked satisfies the sliding safety factor Fs, there is no need to apply the sliding resistance Fr to the lower block body 1, so it is installed on the lower block body 1.
  • the lower front surface 3b of the upper block main body 1 does not necessarily need to contact both the surface contact contact pieces 2b, 2b of the pair of left and right anti-slip pieces 2,2.
  • At least one suitable slip preventing piece 2 can be appropriately used as the positioning piece.
  • the lower front face 3b of the upper block body 1 is brought into contact with the slide prevention pieces 2, 2 provided on the lower block bodies 1, 1 adjacent to the left and right. Thereby, the positioning of the upper block main body 1 can be easily performed.
  • the surface contact abutment pieces 2b, 2b of the respective slide prevention pieces 2, 2 are rotatable about the axis of the rod-shaped support pieces 2a, 2a, the front face of the upper block body 1 and the lower block body Even when the front surfaces of the upper and lower blocks 1 and 1 are not parallel to each other, the lower block 3b of the upper block body 1 can be reliably brought into contact with the lower surface 3b, so that a satisfactory positioning function can be ensured.
  • At least one anti-slip piece 2 provided on the block body 1 immediately below or on the lower block body 1, 1 adjacent to the left and right, and the lower front part 3b of the upper block body 1 as appropriate.
  • the position of the upper block main body 1 can be easily determined by contacting the blocks.
  • the block A for retaining wall as the second embodiment has the same basic structure as the block A for retaining wall of the first embodiment as shown in FIGS. 19 and 20.
  • the difference is that the vertical load receiving piece 12 is integrally provided.
  • the anti-slip piece contact recesses 25, 26 extend in the left-right direction across the lower surfaces of the left and right side walls 5, 6 located immediately behind the front wall 3 and the lower surfaces of the right and left joints 9, 10. And the lower and left and right sides thereof are opened, and each of the anti-sliding piece contact recesses 25 and 26 formed in the block body 1 stacked one above the other is connected to the lower block body 1.
  • the upper and lower pairs of anti-slip pieces 2, 2 are fitted to the upper parts of the pair of anti-slip pieces 2, 2 and the surface-contact abutment pieces 2b, 2b of the respective anti-slip pieces 2, 2 are provided with the respective anti-slip contact recesses 25, 26.
  • the rear inner surfaces 25a and 26a are brought into contact with each other in a surface contact state.
  • the upper portions of the anti-slip pieces 2 prevent the block body 1 stacked immediately above the block body 1 from sliding forward, and the block body 1 moves left and right in the left and right directions. I am free to do it. 5648
  • the vertical load receiving piece 12 protrudes rearward from the lower rear part of the rear wall 4 of the block body 1, forms a vertical load receiving surface 12a on the upper surface, and has a rearward projecting width of the vertical load receiving surface 12a.
  • w is formed to be about 2.0 times the vertical width h of the vertical load receiving piece 12 or shorter.
  • the vertical load receiving piece 12 has a rear surface 12b formed on an inclined surface substantially along the cut surface Jk of the ground J at the retaining wall construction site.
  • the backing material U on the vertical load receiving piece 12 can also be incorporated (calculated) in the formula of the sliding safety factor, and the sliding safety factor of the block body 1 can be efficiently calculated. So that it can be enhanced.
  • the retaining wall block A according to the third embodiment has the same basic structure as the retaining wall block A according to the first embodiment as shown in FIG. 21, but is joined as a left-right spacing holding piece.
  • Parts 9 and 10 are formed by bulging outward and extending upward and downward at the position of the left 'right end face of the front wall 3, and the front top end faces 5 b and 5 b of the left and right walls 5 and 6 are formed.
  • 6b and the top end surfaces 9d and 10d of the joints 9 and 10 are formed substantially flush with the top end surface 3a of the front wall 3, and the block mounting surfaces 13 and 14 are attached to these top end surfaces 5b, 6b, 9d and 10d. It differs in that it is formed.
  • At least one of the front top end faces 5b, 6b of the right side walls 5, 6 and the top end faces 9d, 10d of the joints 9, 10 is flush with the top end face 3a of the front wall 3.
  • the block mounting surfaces 13 and 14 can be formed entirely or partially.
  • P is the upper mounting position of the front of the front wall 3 when the upper retaining wall block A is mounted, and the upper mounting position P is in front of the left and right side walls 5 and 6.
  • the width formed between the top end surfaces 5b and 6b and the rear end is defined as the front and rear width Wa of the block mounting surface.
  • W1 is the front and rear width of the joints 9 and 10
  • W2 is the front and rear width of the block body 1
  • W3 is the front and rear width of the rear wall 4
  • HI is the height of the front wall 3
  • H2 is the height of the rear wall 4.
  • the front-to-back width Wx from the front end of the top end face 3a of the front wall 3 to the rear end of the front top end faces 5b, 6b of the left and right walls 5, 6 is formed to a necessary minimum. Since a step is formed between the end faces 5b, 6b and the rear top end faces 5c, 6c, the weight of the retaining wall block A itself can be reduced, and the front and rear widths of the block mounting surfaces 13, 14 are secured. As a result, it is possible to reliably and stably support the upper retaining wall block A placed on the upper mounting surfaces 13 and 14 of the same block. .
  • the joints 9 and 10 are formed at the positions of the left and right end surfaces of the front wall 3 by bulging outward and extending vertically, the joints 9 and 10 are formed through the joints 9 and 10.
  • the spacing between the side walls of the retaining wall blocks A, A adjacent to each other in the left-right direction can be kept constant, and at the time of curve construction, the retaining wall blocks ⁇ , ⁇ adjacent in the left-right direction can be used.
  • a joining concave portion 9a extending vertically is formed at the outer end of one of the right and left joints 9 and extending vertically at the outer end of the other joint 10 for the above joining. It is also possible to form a connecting ridge 10a that fits and connects with the concave ridge 9a. Also, the height H2 of the rear wall 4 is
  • the fulcrum through-holes 23 are formed in front of the inclined surfaces 5d, 6d formed between the front top end surfaces 5b, 6b and the rear top end surfaces 5c, 6c of the left and right side walls 5, 6. are doing.
  • W4 is the front-rear width between the book reversing fulcrum through hole 23 and the rear end of the inclined surface 5d.
  • the through-hole 23 can be used to smoothly reverse the block body 1 and the block reversal fulcrum recesses 17, 18 or the block reversal.
  • the lifting of the block body 1 using the support fulcrum through hole 23 can be performed in a stable posture.
  • the retaining wall block A according to the fourth embodiment has the same basic structure as the retaining wall block A according to the first embodiment, as shown in FIG. Parts 9 and 10 are formed by bulging outward and extending vertically in a position straddling the left 'right end face of the front wall 3 and the front outer side surfaces of the left and right side walls 5 and 6.
  • the front top faces 5b, 6b of the left and right walls 5, 6 and the top faces 9d, 10d of the joints 9, 10 are formed substantially flush with the top face 3a of the front wall 3, and these top faces are formed.
  • block mounting surfaces 13, 14 are formed on 5d, 6d, 9d, and 10d.
  • At least one of the front top end faces 5b, 6b of the left and right side walls 5, 6 and the top end faces 9d, 10d of the joints 9, 10 is substantially flush with the top end face 3a of the front wall 3.
  • the block mounting surfaces 13, 14 can be formed entirely or partially.
  • the front-rear width Wx from the front end of the top end face 3a of the front wall 3 to the rear end of the front top end faces 5b, 6b of the left and right walls 5,6 is:
  • the front-to-rear width Wx from the front end of the top end face 3a of the front wall 3 to the rear end of the front top end faces 5b, 6b of the left and right walls 5,6 is formed to a necessary minimum.
  • End faces 5b, 6b and rear Since a step is formed between the upper end faces 5c and 6c, the weight of the retaining wall block A itself can be reduced, and the front and rear widths Wa of the block mounting surfaces 13 and 14 can be secured. It is possible to reliably and stably support the upper retaining wall block A placed on the upper loading surfaces 13 and 14.
  • the joints 9 and 10 are formed so as to bulge outward and extend vertically in a position straddling the left and right end surfaces of the front wall 3 and the front outer surfaces of the left and right walls 5 and 6.
  • Adjacent retaining wall blocks ⁇ , ⁇ can be arranged at an angle to the position where the rear end of the side wall abuts, and can be adequately adapted to the construction of a curve with a small radius of curvature.
  • the joints 9 and 10 are bulged outward and extended vertically in a position straddling the left and right end surfaces of the front wall 3 and the front outer surfaces of the left and right walls 5 and 6.
  • a joining recess 9a extending vertically is formed at the outer end of one of the right and left joints 9 and extending vertically at the outer end of the other joint 10. It is possible to easily form the connecting ridge 10a to be fitted and connected to the connecting concave ridge 9a.
  • the retaining wall block A of the stepped position in which the sliding safety factor Fs does not satisfy the relationship of the following “Equation 1” is obtained by adopting the retaining wall block provided with the above-described sliding prevention piece 2. The following equation (2) is satisfied.
  • V Vertical load (kN)
  • Allowable shear stress (N / mm 2 ), ie, sliding safety factor Fs force For example, by setting the sliding resistance force Fr to be equal to or greater than 1.5, before and after the retaining wall block The width can be reduced as much as possible (formed as short as possible), and the sliding safety factor Fs can be properly secured.
  • the sliding safety factor Fs is generally 1.5, but if it fluctuates due to various conditions at the site, etc., it will conform to that value.
  • the friction coefficient ⁇ can be calculated as 0.600, for example.
  • the lower portions of the lifting connection pieces 24, 24 are inserted into the insertion holes 11, 11 formed in the front end faces at the left and right front portions of the block body 1, and the lifting connection pieces 24, 24 are attached to the ceiling.
  • the lifting wall can be easily used with the lifting equipment. Can be lifted.
  • the block main body 1 is formed in a cylindrical shape with an opening at the top and bottom surface from the front and rear walls 3, 4 and the left and right walls 5, 6.
  • the block main body 1 may include a front wall 3 and left and right side walls 5 and 6, and may be formed at least in an upper surface opening.
  • the basic block B as the second embodiment The basic structure is the same as the basic block B as the embodiment, and the block main body 20 is formed into a cylindrical shape with an opening at the upper surface and a lower surface from the front wall 27, 28 and the left wall 29, 30.
  • the right and left side walls 29, 30 have front and outer joints 31, 32 as left and right gap holding pieces, which are bulged outward and extended vertically.
  • (a) of FIG. 23 is a plan view
  • (b) is a rear view
  • (c) is a left side view
  • (d) is a right side view
  • (e) is a sectional side view.
  • the left joining portion 31 is formed with a joining recess 31a extending vertically and having a semi-circular cross section while the right joining portion 32 is extending vertically and having a semi-circular cross section.
  • the joining ridge portion 32a is formed.
  • bulging portions 33, 33, 34, and 34 which bulge inward, are formed at the four corners on the front, rear, left, and right sides of the block body 20, respectively.
  • insertion holes 11, 11, and 11 extending substantially vertically downward are formed, and a slip prevention piece 2 (see FIG. 9) is inserted into the insertion hole 11 at the front left side.
  • the lower part can be inserted, and the lower part of either the anti-slip piece 2 or the lifting connection piece 24 (see FIG. 11) can be selectively inserted into the insertion hole 11 on the right front.
  • the lower part of the lifting connection piece 24 can be inserted into the insertion hole 11 at the rear left side.
  • center of gravity Gx of the front and back of the foundation block B intersects the position of the vertical center of gravity Gy, and the left and right side walls 29, 30 at or near the intersection thereof extend substantially horizontally in the left and right direction. Forming 18.
  • the block body 20 formed upside down in the mold is manually inverted around the left and right revolving spindles while being lifted at the time of demolding, and then the lifting device is used. It can be placed at a predetermined placing place.
  • the block reversal fulcrum recesses 17 and 18 extend substantially horizontally in the horizontal direction at the intersection on the left and right side walls 29 and 30 where the longitudinal center of gravity Gx of the block main body 20 and the vertical center of gravity Gy intersect. Since the block body 20 is formed so as to be lifted, the work of lifting the block main body 20 by the lifting device can be performed smoothly, and the work of turning the block body 20 upside down manually can be performed smoothly and smoothly.
  • the block body having the front wall, the left and right side walls, and formed at least in the upper surface opening, and the sliding body attached to the block body so as to protrude upward.
  • the lower part is inserted into the insertion hole formed in the top end face of the block body, and the upper part is projected upward from the top end face of the block body to prevent the slippage.
  • the upper part of the piece prevents the block bodies stacked directly above the block body from sliding forward and allows the block body to move freely in the left-right direction.
  • the sliding resistance force Fr can be added to the lower block body.
  • the sliding safety factor Fs is generally 1.5, but if it fluctuates due to various conditions at the site, etc., it will conform to that value.
  • the block body is free to move in the left-right direction, when building blocks and stacking the retaining wall in a curve, a block is placed on top of the row of lower block bodies. Even when the rows of the main body are displaced in the left-right direction, the left-right position can be adjusted as appropriate.
  • any one of the lower portions of the slip prevention piece and the lifting connection piece can be selectively inserted into the insertion hole.
  • the upper portion of the slide prevention piece can prevent the block body stacked immediately above the block body from sliding forward.
  • the lower part of the lifting connection piece is inserted into the insertion hole formed in the top end face of the block body to connect to the block body, and the lifting connection piece is projected upward from the top end face.
  • the work of constructing the retaining wall which is constructed by lifting the block bodies and stacking them, can be performed efficiently.
  • the anti-slip piece is formed by a rod-shaped support piece formed so as to be insertable into the insertion hole, and formed on the upper part of the rod-shaped support piece, And a surface contact abutting piece for abutting the block body stacked in a plane in a surface contact state.
  • the surface contact contact piece formed on the upper part of the slip prevention piece increases the contact area with the block body, and disperses the stress generated inside the block body via the same surface contact contact piece. This can prevent the block body from being damaged.
  • the surface contact abutment piece is configured to be rotatable around the axis of the rod-shaped support piece.
  • the upper block body is stacked so that the upper block body straddles the lower block body adjacent to the left and right.
  • the upper block body can be reliably brought into surface contact with the surface contact abutting piece of the slide prevention piece provided on the lower block body adjacent to the left and right.
  • the stress generated inside the block main body through the surface contact abutting piece can be dispersed, and damage to the block main body can be prevented.
  • a plurality of retaining wall blocks are laid so as to be adjacent to each other in the left-right direction, and the above-mentioned (1) to (4) are arranged on these retaining wall blocks.
  • a plurality of retaining wall blocks described in any of the above is laid in a stacked state adjacent to each other in the left-right direction, and in the same state, the upper part of each lower retaining block is located above the left and right sides of the top end face of each lower retaining block A pair of left and right anti-slip pieces protrude to prevent the positioning of the retaining wall blocks stacked directly above and the forward sliding of the retaining wall blocks. Therefore, when constructing a retaining wall by stacking retaining wall blocks, lay a row of lower retaining wall blocks and stack an upper row of retaining wall blocks on top of it. By laying in this state, a retaining wall can be constructed.
  • the upper retaining wall block is brought into contact with the upper part of the pair of left and right anti-slip pieces protruding upward from the left and right sides of the top end face of the lower retaining wall block, from behind,
  • the upper retaining wall block can be easily positioned, and the efficiency of stacking work of the retaining wall block can be improved.
  • the pair of left and right anti-slip pieces can apply a sliding resistance to the lower retaining wall block, thereby reliably preventing the retaining wall blocks stacked on the upper layer from sliding. . Therefore, the sliding safety factor of the built retaining wall can be properly secured.
  • the plurality of retaining wall blocks are horizontally And a plurality of retaining wall blocks described in any one of (1) to (4) above are laid in a stacked state on the retaining wall blocks in the lateral direction. Then, if the sliding safety factor is satisfied in the same state, the top end face of each retaining wall block directly below and / or each retaining wall immediately below each adjacent retaining wall block The anti-slip pieces, which project upward from the top end of the floor block, position each of the retaining wall blocks stacked directly above.
  • the retaining wall when constructing the retaining wall by stacking the retaining wall blocks, projecting upward from the top end surface of the immediately lower retaining wall block or the adjacent lower retaining block.
  • the upper block for retaining wall is positioned on the upper part of the sliding prevention piece by contacting it from behind, so that the sliding prevention piece can also be used simply as a positioning piece.
  • the stacking work efficiency of the block can be improved.
  • each step the top end face of each retaining wall block directly below, and Z or the top of each retaining wall block directly below each adjacent retaining wall block Positioning can be performed reliably and easily by contacting the retaining wall block, which is stacked immediately above, with the anti-slip piece whose upper part protrudes upward from the end face.
  • the other retaining wall blocks are similarly brought into contact with at least one anti-slipping piece protruding from the lower retaining wall block, so that the block is surely provided.
  • it can be laid continuously.

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Civil Engineering (AREA)
  • Environmental & Geological Engineering (AREA)
  • Structural Engineering (AREA)
  • Ocean & Marine Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Mining & Mineral Resources (AREA)
  • Paleontology (AREA)
  • Retaining Walls (AREA)
  • Revetment (AREA)

Abstract

Bloc pour une paroi de soutènement et procédé d’empilage en gradins pour le bloc, capable de conférer une résistance au glissement à un corps de bloc de niveau inférieur. Le bloc comprend un corps de bloc comprenant une paroi avant et des parois de droite et de gauche et formé de façon à ce qu’au moins sa surface supérieure soit ouverte et des éléments anti-glissement montés sur le corps de bloc de manière à faire saillie vers le haut. Les éléments anti-glissement sont formés de façon à ce que leurs parties inférieures soient insérées dans des trous d’insertion dans la face d’extrémité de dessus du corps de bloc et leurs parties supérieures depuis la face d’extrémité de dessus du corps de bloc fassent saillie vers le haut pour éviter que les parties supérieures des éléments anti-glissement ne fassent glisser vers l’avant un corps de bloc empilé juste sur le corps de bloc et pour libérer le mouvement latéral du corps de bloc.
PCT/JP2004/005648 2004-04-20 2004-04-20 Bloc pour paroi de soutenement et son procede d’empilage en gradins WO2005103393A1 (fr)

Priority Applications (2)

Application Number Priority Date Filing Date Title
CNA2004800427976A CN1938483A (zh) 2004-04-20 2004-04-20 护墙用块及该护墙用块的阶梯式叠装施工方法
PCT/JP2004/005648 WO2005103393A1 (fr) 2004-04-20 2004-04-20 Bloc pour paroi de soutenement et son procede d’empilage en gradins

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/JP2004/005648 WO2005103393A1 (fr) 2004-04-20 2004-04-20 Bloc pour paroi de soutenement et son procede d’empilage en gradins

Publications (1)

Publication Number Publication Date
WO2005103393A1 true WO2005103393A1 (fr) 2005-11-03

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PCT/JP2004/005648 WO2005103393A1 (fr) 2004-04-20 2004-04-20 Bloc pour paroi de soutenement et son procede d’empilage en gradins

Country Status (2)

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CN (1) CN1938483A (fr)
WO (1) WO2005103393A1 (fr)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP6950944B2 (ja) * 2017-09-29 2021-10-13 東栄商興株式会社 空積みブロック擁壁の基礎部構造

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2850913B2 (ja) * 1989-01-31 1999-01-27 マチダコーポレーション株式会社 コンクリート擁壁ブロック，擁壁，及びその構成方法
JPH11501374A (ja) * 1995-02-24 1999-02-02 グループ ペルマコン インコーポレイテッド 擁壁システム
JP3072978B2 (ja) * 1997-04-24 2000-08-07 株式会社トッコン ブロック積み壁構造及びこれに用いる壁面ブロック並びに基礎ブロック
JP2001220758A (ja) * 1999-12-03 2001-08-17 Hokkaido Concrete Block Kyodo Kumiai 擁壁ブロックおよびそれを利用した擁壁
JP2003155749A (ja) * 2001-11-20 2003-05-30 Taiyo Kogyo Corp 盛土の壁面部構造

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2850913B2 (ja) * 1989-01-31 1999-01-27 マチダコーポレーション株式会社 コンクリート擁壁ブロック，擁壁，及びその構成方法
JPH11501374A (ja) * 1995-02-24 1999-02-02 グループ ペルマコン インコーポレイテッド 擁壁システム
JP3072978B2 (ja) * 1997-04-24 2000-08-07 株式会社トッコン ブロック積み壁構造及びこれに用いる壁面ブロック並びに基礎ブロック
JP2001220758A (ja) * 1999-12-03 2001-08-17 Hokkaido Concrete Block Kyodo Kumiai 擁壁ブロックおよびそれを利用した擁壁
JP2003155749A (ja) * 2001-11-20 2003-05-30 Taiyo Kogyo Corp 盛土の壁面部構造

Also Published As

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