JP5937989B2 - Retaining wall block - Google Patents

Description

  The present invention can use a retaining wall block, in particular, earth and sand that can be easily collected as a filling material, and can be easily constructed. The present invention relates to a retaining wall block that can be stably lifted.

  Conventionally, for example, a retaining wall constructed on a sloped land by stacking a plurality of retaining wall blocks along the sloped land is known as one of the retaining works for preventing the collapse of the sloped land. Yes.

  A conventional earth retaining wall block (hereinafter referred to as conventional block A) constituting the earth retaining wall will be described with reference to the drawings.

  9 is a partially omitted perspective view showing the conventional block A, FIG. 10 is a partial front view showing the retaining wall constructed by the conventional block A, and FIG. 11 shows the retaining wall constructed by the conventional block A. It is sectional drawing.

  As shown in FIG. 9, the conventional block A is composed of a reinforcing bar rod 23 as an inner packing material containing frame having a rectangular parallelepiped shape, and an inner packing material 24 packed in the reinforcing bar rod 23. The reinforcing bar 23 as the filling material housing frame is formed by assembling bars 21 and flat bars 22 in a lattice shape.

  The filling material 24 is usually stone gravel, but the soil at the construction site of the retaining wall may be used. When soil is used as the filling material 24, a polyethylene sheet or the like is used so that the soil does not escape from the lattice, and in order to increase the strength of the conventional block, It is necessary to compact. Moreover, in order to form the space for draining the spring water from the back of the earth retaining wall (the natural ground side) in the conventional block, a stone layer is provided together with the soil layer.

  The size of the stone gravel as the filling material 24 is a size that does not escape from the lattice of the reinforcing bar 23, and is usually about 150 mm to 200 mm.

  As shown in FIGS. 10 and 11, the earth retaining wall using the conventional block A is constructed by stacking a plurality of conventional blocks A in the upper and lower stages while being connected in the left-right direction by the connecting rod 25. Yes.

  Since the retaining wall resists the earth pressure of the sloped land by its own weight of the filling material 24 and prevents the sloped land from collapsing, the strength of the retaining wall is the same as that of the conventional blocks stacked in upper and lower stages. This is caused by the stability and integration of the individual filling materials 24.

  As described above, according to the earth retaining wall constructed by stacking a plurality of conventional blocks A in the vertical direction while being connected in the left-right direction by the connecting rod 25, the slope land can be prevented from collapsing. There were the following problems.

  (1) The rebar bar 23 constituting the conventional block A is composed of a bar steel 21 and a flat bar 22 assembled in a lattice shape. Therefore, although it can be manufactured at low cost, the strength is low and the rebar bar 23 There was a possibility that the reinforcing bar 23 would be deformed by stone gravel as the filling material 24 packed inside. When the reinforcing bar 23 is deformed, the conventional blocks adjacent in the vertical and horizontal directions cannot be brought into close contact with each other when the plurality of conventional blocks are stacked in the upper and lower stages while being connected in the horizontal direction by the connecting bar 25. As a result, since the stability of the conventional block A is lacking, the strength of the earth retaining wall is lowered.

  (2) The size of the gravel as the filling material 24 is unsuitable whether it is too small or too large, and is limited to the above-mentioned size. The construction cost of the retaining wall increases. Originally, it is preferable that stones of a predetermined size can be obtained at the construction site of the retaining wall, but it is necessary to sort out the stones of a predetermined size. If it is difficult to obtain, it must be transported from another place to the construction site or purchased, which also increases the construction cost of the retaining wall.

  (3) When the conventional blocks A are stacked in multiple upper and lower stages, the upper and lower reinforcing bar rods 23 are stacked with a metal touch (generally, the sliding friction coefficient between steel is μ = 0.15). The rebar bar 23 is extremely slippery. As a result, the stability of the conventional block is lacking, and the strength of the retaining wall is also reduced from this point.

  (4) When stone cannot be collected and soil is used as the filling material 24, as described above, in order to increase the strength of the conventional block A, the soil is put into the reinforcing bar 23, and then a predetermined Therefore, the man-hour is increased by this work, and the construction cost of the retaining wall increases.

  (5) When using soil as the filling material 24, in order to prevent the outflow of soil from the reinforcing bar 23, it is necessary to cover the inside of the reinforcing bar 23 with a polyethylene sheet or the like. Construction work becomes complicated.

  (6) To construct earth retaining walls in valleys, cliffs or rivers where workers cannot enter, make a conventional block A in another location and suspend it by constructing it with a crane or the like. Although it is carried out by construction, the conventional block A is hard to be stably suspended by a crane or the like because the rebar bar 23 of the conventional block A is filled with stone gravel and earth and sand. Further, since a large load due to the weight of the filling material 24 acts when lifting, it is necessary to consider a suspension method so that the load is not concentrated on the reinforcing bar 23.

  Therefore, the object of the present invention is to have excellent stability, can use earth and sand that can be easily collected as a filling material, and can be easily constructed, construction cost is low, It is another object of the present invention to provide a retaining wall block that can be stably lifted by a crane or the like.

  The inventors of the present application, as a result of intensive investigations to solve the above-mentioned problems, have high stability as a result of obtaining a high strength if the filling material containing frame is made of a wall material, and has excellent stability. The earth and sand that can be easily collected can be used as the filling material, and because it can be easily constructed, the construction cost is low, and the suspension is embedded in the filling material mixed with cement. And when it hardened, the knowledge that the retaining wall block which can be lifted stably with a crane etc. can be provided was acquired.

  Moreover, the said effect acquired the knowledge that it improved further by using corrugated steel plates, such as a liner plate, as a wall surface material.

  The present invention has been made on the basis of the above findings and is characterized by the following.

The invention according to claim 1 is an earth retaining wall block comprising a filling material containing frame and a filling material housed in the filling material containing frame, wherein the filling material containing frame is a wall surface The filling material includes a solidified material, a hanging tool is embedded in the filling material, and a recess is formed at a predetermined position on the upper surface of the filling material, The head of the hanging tool is exposed in the recess, and an outflow prevention plate for preventing the filling material from flowing out from the bottom of the filling material housing frame is attached to the lower part of the hanging tool. It has a feature in being.

The invention described in claim 2 is characterized in that, in the invention described in claim 1, the filling material accommodating frame body has a quadrangular shape .

The invention according to claim 3 is characterized in that, in the invention according to claim 1 or 2, the wall surface material is made of a corrugated steel plate .

The invention according to claim 4 is characterized in that, in the invention according to claim 1 or 2, the wall surface material is made of a liner plate .

The invention according to claim 5 is characterized in that, in the invention according to any one of claims 1 to 4, the filling material is made of earth and sand .

The invention according to claim 6 is characterized in that, in the invention according to any one of claims 1 to 5, the solidifying material is cement-based .

  According to the present invention, by using the wall material for the filling material housing frame, high strength can be obtained. As a result, the earth and sand that has excellent stability and can be easily collected as the filling material are used. The construction cost can be reduced because it can be easily constructed, and if a suspension is embedded in the filling material mixed with cement-based solidified material and cured, it can be stabilized by a crane or the like. It is possible to provide a retaining wall block that can be lifted.

  Moreover, the said effect is further improved by using corrugated steel plates, such as a liner plate, as a wall surface material.

It is a schematic perspective view which shows the earth retaining wall block (this invention block B) of this invention. It is a top view which shows the earth retaining wall block (this invention block B) of this invention. It is a front view which shows the earth retaining wall block (this invention block B) of this invention. It is a side view which shows the earth retaining wall block B (this invention block B) of this invention. FIG. 4 is a sectional view taken along line AA in FIG. 3. It is an expanded sectional view of the hanger part in the earth retaining wall block B of this invention. It is a top view which shows the outflow prevention board in the earth retaining wall block B of this invention, (a) is a square-shaped outflow prevention board, (b) is a square frame-shaped outflow prevention board, (c ) Is a mesh-like outflow prevention plate. It is a partial front view which shows the earth retaining wall constructed by stacking the earth retaining wall block B of this invention. It is a partial abbreviation perspective view showing conventional block A. It is a partial front view which shows the earth retaining wall constructed | assembled by the conventional block A. It is sectional drawing which shows the earth retaining wall constructed | assembled by the conventional block A.

  One embodiment of the earth retaining wall block of the present invention (hereinafter referred to as the present invention block B) will be described with reference to the drawings.

  1 is a schematic perspective view showing the present invention block B, FIG. 2 is a plan view showing the present invention block B, FIG. 3 is a front view showing the present invention block B, and FIG. 4 shows the present invention block B. It is a side view.

  As shown in FIGS. 1 to 4, the present invention block B includes a filling material containing frame 1, a filling material 2 housed in the filling material containing frame 1, and a hanger 3. Yes.

  The filling material housing frame 1 is composed of a front frame 4, a back frame 5, a left side frame 6, and a right side frame 7, each of which is formed of a liner plate as a wall surface material, connected in a square shape. The length of the filling material accommodating frame 1 can be freely changed by adjusting the number of liner plates connected as a basis.

  As shown in FIG. 6, the hanger 3 includes a steel bar 8, a head 9 formed on an upper part of the steel bar 8 and engaged with a hook such as a crane, and an outflow prevention plate 10 attached to the lower part of the steel bar 8. It consists of and. The head 9 is exposed in a recess 11 formed on the upper surface of the filling material 2 so that a hook such as a crane can be easily engaged, and interferes with the upper invention block B when the invention block B is stacked. So as not to protrude from the upper surface of the filling material 2. The hanger 3 may remain embedded in the filling material 2 or may be fixed to the filling material storage frame 1.

  The outflow prevention plate 10 is for preventing the filling material 2 from flowing out from the bottom of the filling material storage frame 1 when the present invention block B is lifted, and its shape is shown in FIG. As shown in a), in addition to the flat plate shape, a rectangular frame shape as shown in FIG. 4B or a mesh shape as shown in FIG. Any shape can be used.

  By providing the outflow prevention plate 10, even if the filling material 2 mixed with the cement-based solidified material is not completely cured, the solidified material improves the friction of the soil particles inside the filling material after a certain period of time. Therefore, even if the block B of the present invention is lifted, the filling material 2 is supported by the outflow prevention plate 10 and the filling material storage frame, and there is no possibility of flowing out of the filling material storage frame 1.

  The fixed time may be 1.5 hours to 2.0 hours or more, which is a general time when hardening starts after kneading the concrete, but in the present invention, via the filling material 2, In consideration of lifting the filling material housing frame 1, a curing time of about an intermediate value (10 hours to 12 hours) of 24 hours from the start of curing to completion of curing is required.

  A liner plate is a structural member that has a corrugated steel sheet formed by corrugating a thin steel sheet and has flanges on the four sides of the corrugated steel sheet, and is widely used as a temporary earth retaining material, drainage well, horizontal shaft, etc. Has been.

  The liner plate is lightweight, has a corrugated process, has high strength, is excellent in workability, has excellent corrosion resistance, and has a shape such as an arc or a straight line. In this example, a linear liner plate is used.

  By configuring the filling material housing frame 1 with a liner plate, the filling material housing frame 1 can have high strength, and thus can be self-supporting without a cover frame and a bottom frame. Therefore, the present invention block B is not stacked by metal touch. As a result, combined with the effect of integrating the upper and lower fillings 2 of the block B of the present invention, which will be described later, it becomes extremely difficult to slip, so that the stability of the block B of the present invention is improved. The strength of the wall is improved.

  In addition, since the filling material housing frame 1 is constituted by the liner plate, when the filling material housing frame 1 is lifted, the filling material 2 in the vicinity of the liner plate meshes with the waveform of the liner plate and becomes resistance. In addition, there is less risk of the filling material flowing out.

  The filling material containing frame 1 of the present invention is not limited to a corrugated steel plate such as a liner plate, and may be a concrete material, a wire netting material, a synthetic resin material or the like as long as it has strength. good.

  The effect of integrating the upper and lower stages of the filling material 2 will be described.

  When soil and sand mixed with cement-based solidifying material is used as the filling material 2, and the present invention block B is stacked before the cement-based solidifying material is completely cured, the upper filling material 2 is It descends and is integrated with the lower filling material 2.

  Moreover, since the filling material accommodating frame 1 does not have a cover surface frame and a bottom frame, even if the filling material 2 is not fully packed in the lower filling material containing frame 1, A part of the middle packing material 2 in the upper middle packing material storage frame 1 stacked on top enters the lower middle packing material storage frame 1. As a result, there is no space due to insufficient filling amount of the filling material 2 in the filling material housing frame 1 of the lower stage. Also from this point, the stability of the retaining wall block B is improved.

  In addition, since there is no risk of deformation of the filling material accommodating frame 1 due to the insertion of the filling material 2 or the like, when constructing a retaining wall by stacking a plurality of the blocks B of the present invention in the upper and lower stages, Adjacent invention blocks B adhere to each other. As a result, the stability of the present invention block B is significantly improved.

  If a reinforcing material (not shown) is stretched between the front frame 3 and the back frame 4, when the filling material 2 is packed in the filling material storage frame 1, the filling material storage frame body. 1 can be reliably prevented from being deformed.

  Further, when stacking the intermediate filling material storage frames 1, if mortar or the like is previously placed on the upper portion of the lower intermediate filling material storage frame 1, the upper and lower intermediate filling material storage frames 1 are connected. Becomes strong.

  Since the block B of the present invention is composed of a front frame 4, a back frame 5, a left side frame 6 and a right side frame 7 which are manufactured in advance and connected in a square shape, it can be easily transported and constructed. In addition, since the length and stacking height of the block B of the present invention can be freely adjusted by flange-bonding the basic liner plate, it is possible to easily cope with the construction site of the retaining wall.

  The filling material 2 is made of earth and sand. It may be earth and sand mixed with stones and gravel. Since the filling material 2 improves the friction between the soil particles by mixing the cement-based solidifying material, the filling material 2 flows down from the bottom of the filling material housing frame 1 when the block B of the present invention is lifted. There is nothing. This effect is further improved by the outflow prevention plate 11. As described above, since the earth and sand that can be easily collected is used as the filling material 2 and the filling material 2 to be put into the filling material storage frame 1 is not greatly restricted, the construction cost of the retaining wall is greatly increased. Can be reduced.

  Since the strength of the filling material housing frame 1 is high, it is not particularly necessary to compact the earth and sand after the earth and sand is put into the filling material housing frame 1. Moreover, since there is no possibility that earth and sand will flow out from the filling material housing frame 1, it is not necessary to cover the inside of the filling material housing frame 1 with a polyethylene sheet or the like. From these points, the construction cost of the retaining wall can be reduced.

  In order to manufacture the block B of the present invention, as shown in FIG. 3, the filling material accommodating frame 1 is placed on the flat plate 13 and the suspension 3 is temporarily secured in the filling material containing frame 1 or the filling is filled. After being fixed to the material storage frame 1, earth and sand mixed with cement-based solidifying material as the medium packing material 2 is put into the medium packing material storage frame 1. A recess 11 is formed in the filling material 2 of the head portion 10 of the hanger 3.

  When the filling material 2 is put into the filling material storage frame 1 in this way, after the filling material 2 has improved in viscosity to some extent, that is, when the block B of the present invention is lifted, the filling material After the friction of the soil particles is improved to the extent that 2 does not immediately flow out from the bottom of the filling material containing frame 1, as shown in FIG. 1, a hook such as a crane is engaged with the head of the lifting tool 3, The present invention block B is lifted and hung at the construction site of the retaining wall.

  Even if the present invention block B is lifted before the filling material 2 is completely cured, the action of the outflow prevention plate 11 may cause the filling material 2 to immediately flow out from the bottom of the filling material storage frame 1. Absent.

  In this way, by stacking a plurality of the present invention blocks B, as shown in FIG. 8, it is possible to construct a retaining wall by hanging work even in a place where a person cannot enter. .

  As described above, according to the present invention, the following effects are brought about.

  (1) Since the strength of the filling material containing frame 1 is improved by configuring the filling material containing frame 1 with a wall surface material such as a liner plate, the lid filling frame 1 and the bottom surface are provided on the filling material containing frame 1. There is no need to provide a frame. As a result, since the blocks B of the present invention are not stacked by metal touch, it is extremely difficult to slip in combination with the integration effect of the filling material in the filling material housing frame 1 in the upper and lower stages. . Thereby, the stability of the block B of the present invention is improved, and as a result, the strength of the retaining wall is improved.

  (2) Since it is not necessary to provide the lid surface frame and the bottom frame in the filling material storage frame 1, there is no space due to insufficient filling amount of the filling material 2 in the filling material storage frame 1. From the point of view, the stability of the block B of the present invention is improved.

  (3) Since the deformation | transformation of the filling material accommodating frame 1 can be prevented, when this invention block B is stacked in multiple steps up and down, the adjacent earth retaining wall blocks B closely_contact | adhere. Also from this point, the stability of the present invention block B is improved.

  (3) When the filling material accommodating frame 1 is constituted by a liner plate, the length and stacking height of the block B of the present invention can be freely adjusted by adjusting the number of basic liner plates combined. Therefore, it can easily correspond to the construction site of the retaining wall.

  (4) By constituting the filling material housing frame 1 with a wall material, the compacting operation of the filling material 2 becomes unnecessary. In addition, since it is not necessary to cover the inside of the filling material accommodating frame 1 with a polyethylene sheet or the like, the construction cost of the retaining wall can be reduced also from these points.

  (5) When the earth retaining wall is constructed by hanging construction in valleys, cliffs or rivers where workers cannot enter, the suspension block 3 is provided. Can be lifted.

A: Conventional block B: Invention block 1: Filling material storage frame 2: Filling material 3: Suspension 4: Front frame 5: Rear frame 6: Left side frame 7: Right side frame 8: Steel bar 9: Head Part 10: Outflow prevention plate 11: Recess 12: Flat plate 21: Steel bar 22: Flat steel 23: Rebar rod 24: Filling material 25: Connecting rod

Claims (6)

In the earth retaining wall block consisting of the filling material containing frame and the filling material housed in the filling material containing frame,
The inside filling material containing frame is constituted by a wall surface material, the inside filling material contains a solidifying material, a hanging tool is embedded in the inside filling material, and an upper surface of the inside filling material recess at a predetermined position is formed, the hanger head is exposed in the recess, the lower portion of the hanger, preventing the outflow of the in filling material from the bottom of the in filling material container frame An earth retaining wall block having an outflow prevention plate attached thereto. The earth retaining wall block according to claim 1, wherein the filling material accommodating frame has a quadrangular shape . The retaining wall block according to claim 1 , wherein the wall surface material is made of a corrugated steel plate . The retaining wall block according to claim 1 , wherein the wall material is made of a liner plate . The retaining wall block according to any one of claims 1 to 4, wherein the filling material is made of earth and sand . The earth retaining wall block according to any one of claims 1 to 5, wherein the solidifying material is cement-based .

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