JP6646097B2 - Earth retaining member, installation method of earth retaining member - Google Patents

Description

  The present invention relates to a retaining member and a method of installing the retaining member.

  As a retaining member such as a retaining fence or retaining wall, a material using recycled plastic has been used.

  Conventionally, in a retaining fence in which a fence body is erected between a plurality of pillars erected at appropriate intervals on the ground surface, the pillar has a tip at one end of a synthetic resin-coated steel pipe made by coating a steel pipe with a synthetic resin. A conical plug-like body is attached, a metal hat-shaped lid is covered on the other end, and a metal frame is attached to four sides of a synthetic resin net-like body for the fence body. A known retaining fence is known (Patent Document 1).

JP-A-10-037200

  However, it is difficult to drive a support made of a steel pipe supporting a wall member such as a fence or a wall deep into the ground, and there is a problem that the workability of installing the earth retaining member is poor and the construction cost increases.

  The present invention has been made in view of the above problems, and has as its object to improve installation workability.

In order to solve the above problems, the earth retaining member according to the present invention is:
An earth retaining member that supports a wall member with a plurality of support members,
The support member,
A column connected to the wall member,
Multiple piles,
See containing and a coupling member for coupling the pile of the plurality of said struts,
The coupling member has at least two pile fixing portions around the column,
The plurality of piles are fixed to the two pile fixing portions, respectively .

  According to the present invention, installation workability can be improved.

It is a front explanatory view of the earth retaining member concerning a 1st embodiment of the present invention. FIG. FIG. It is a principal part expanded sectional explanatory view similarly. It is a perspective explanatory view of a support member similarly. It is explanatory drawing used for description of the installation method of the earth retaining member. It is a side explanatory view explaining an installation state of an earth retaining member in a 2nd embodiment of the present invention. It is a side view explaining the earth retaining member concerning a 3rd embodiment of the present invention. It is a perspective explanatory view of the pillar member in the earth retaining member concerning a 4th embodiment of the present invention. It is a perspective explanatory view of the pillar member in the earth retaining member concerning a 5th embodiment of the present invention. It is a perspective explanatory view of the pillar member in the earth retaining member concerning a 6th embodiment of the present invention. FIG. 12 is an explanatory sectional view taken along line AA of FIG. 11.

  Hereinafter, embodiments of the present invention will be described with reference to the accompanying drawings. A first embodiment of the present invention will be described with reference to FIGS. 1 is an explanatory front view of the earth retaining member according to the embodiment, FIG. 2 is an explanatory plan view of the same, FIG. 3 is an explanatory side view of the same, FIG. 4 is an enlarged sectional explanatory view of the main part, and FIG. It is a perspective explanatory view.

  The earth retaining member 1 includes a wall member 2 for retaining the soil 52 and a plurality of support members 3 for supporting the wall member 2.

  The wall member 2 is formed by connecting a plurality of recycled plastic retaining plates 21 with a connecting plate 22, and the retaining plate 21 and the connecting plate 22 are fixed with bolts 23.

  The wall member 2 is fixed to the column member 3 with bolts 41. The bolt 41 passes through a sheath 42 penetrating the wall member 2. In the present embodiment, the wall member 2 has the earth retaining plates 21 stacked in three stages.

  The strut member 3 is connected to the wall member 2, and is a pillar 31 which is a pipe-like member partially driven into the ground 51, a plurality of piles 32 driven into the ground 51, the strut 31 and the plurality of piles 32.

  The upper end portion of the column 31 is inserted into the artificial wood 24 which is a resin cylindrical member, and is connected to the wall member 2 with the artificial wood 24 by bolts 41.

  The lower end portion of the column 31 penetrates the coupling member 33 and is fixed to the coupling member 33 by welding or the like. The tip portion 31a of the lower end portion of the support 31 protruding from the coupling member 33 is a portion serving as an underground pile for temporary support when the earth retaining member 1 is installed. , For example, 60 to 70 cm.

  The coupling member 33 includes a pile fixing portion 35 for fixing the pile 32 at both ends in the longitudinal direction (the direction of the length L2) of the member having a rectangular cross section and on both sides in the short direction (the direction of the width L1). It is provided integrally by welding or the like. The openings at both ends in the longitudinal direction of the connecting member 33 are reinforced by providing the lid members 34, but may be left open without providing the lid members 34.

  The pile fixing portion 35 is a box-shaped portion having a bottom, and a hole 35a through which the pile 32 penetrates is provided at the bottom. In the pile fixing portion 35, the gap between the hole 35 a of the pile fixing portion 35 and the pile 32 is sealed with a sealing agent 36 such as silicone grease, with the upper end of the pile 32 protruding into the pile fixing portion 35. In the sealed state, the fixing member 37 such as mortar or concrete is filled in the pile fixing portion 35 and solidified.

  As a result, the pile 32 and the pile fixing portion 35 are fixed, and the column 31 and the pile 32 are firmly connected by the connecting member 33.

  The stake 32 is formed of a member that is easier to be driven into the underground 51 than the column 31. In the present embodiment, a deformed reinforced pile is used as the pile 32, but the present invention is not limited to this.

  Next, a method of installing the earth retaining member will be described with reference to FIG. FIG. 6 is an explanatory diagram for explaining the installation method.

  First, as shown in FIG. 6A, the distal end portion 31a of the column 31 of the column member 3 is driven into the underground 51 at a predetermined depth, for example, 60 to 70 cm. At this time, the connecting member 33 is fixed to the column 31 by welding or the like.

  As shown in FIGS. 2 and 5, the coupling member 33 has a longitudinal direction (a direction of the length L2) in a front-rear direction of the wall member 2 (a direction orthogonal to a direction along the wall member 2) and a short side direction ( (The direction of the width L1) is arranged along the wall member 2.

  Then, as shown in FIG. 6B, the pile 32 is fixed to the pile fixing part 35 through the hole 35 a of the pile fixing part 35 of the coupling member 33, and the pile 32 is lowered to a predetermined depth under the ground 51. Type in. In the present embodiment, after the four piles 32 are driven in, the space between the hole 35a of the pile fixing portion 35 and the pile 32 is sealed with the sealing agent 36, and the mortar, concrete, etc. Is poured and solidified.

  Thereby, the column 31 and the plurality of piles 32 are connected via the connecting member 33.

  Thereafter, as shown in FIG. 6C, the wall member 2 and the column member 3 are fixed with bolts 41 or the like, thereby completing the earth retaining member 1. In the present embodiment, the ground surface is a flat surface, and the coupling member 33 is buried in the underground 51. However, the present invention is not limited to this.

  Here, it is difficult to drive a relatively large-diameter pipe-shaped column 31 deep into the ground, whereas it is easy to drive a pile 32 such as a deformed reinforcing bar deep into the ground. Therefore, the installation workability of the earth retaining member 1 is improved, and the construction cost can be reduced.

  In addition, a sufficient strength can be secured by distributing the force received by one support 31 to the plurality of piles 32 via the coupling member 33.

  Next, a second embodiment of the present invention will be described with reference to FIG. FIG. 7 is an explanatory side view for explaining an installation state of the earth retaining member in the embodiment.

  In the present embodiment, the earth retaining member 1 is installed on the inclined surface 53. In this case, a part of the connecting member 33 can be in a state of being exposed on the ground surface without being buried in the underground 51.

  Even in such a state, the earth retaining member 1 can be installed.

  Next, a third embodiment of the present invention will be described with reference to FIG. FIG. 8 is a side view illustrating the earth retaining member according to the embodiment.

  In the present embodiment, the height H1 of the pile fixing portion 35 of the connecting member 33 is more in the ground direction than the height of the portion of the connecting member 33 to which the column 31 is fixed (this is referred to as a “main body portion 33a”). (The direction opposite to the side connected to the wall member 2).

  In addition, the position where the support 31 is fixed to the connecting member 33 is determined by the distance L21 from the support 31 to the end of the wall member 2 of the connecting member 33 on the side where the soil 52 is fixed, and the distance between the support 31 and the wall member 2 of the connecting member 33. The distance L22 to the end opposite to the side where the soil 52 is fastened is longer.

  As described above, by biasing the fixing position of the column 31 so that the distance L22 becomes longer, the strength of the earth retaining member 1 against the earth pressure is improved.

  In addition, the piles 32A and 32B disposed before and after the wall member 2 hold the soil 52 of the support wall member 2 more than the length h1 of the pile 32B disposed on the side holding the soil 52 of the wall member 2. The length h2 of the pile 32A arranged on the opposite side is increased.

  Thus, even when the earth retaining member 1 is installed on the inclined surface 53 or the like, the pile 32 can be driven to a sufficient depth, and the strength of the earth retaining member 1 against the earth pressure is improved.

  Next, a fourth embodiment of the present invention will be described with reference to FIG. FIG. 9 is a perspective explanatory view of a support member in the earth retaining member according to the same embodiment.

  In the present embodiment, the strut member 3 has a configuration in which two pile fixing portions 35 are provided on the coupling member 33 and are fixed with the two piles 32.

  When the height of the wall member 2 is low, sufficient strength can be ensured even with the two piles 32.

  Next, a fifth embodiment of the present invention will be described with reference to FIG. FIG. 10 is a perspective explanatory view of a support member in the earth retaining member according to the same embodiment.

  In the present embodiment, the strut member 3 has a configuration in which the coupling member 33 has a substantially triangular planar shape, and is provided with a pile fixing portion 35 on each of three sides, and is fixed with the three piles 32.

  Next, a sixth embodiment of the present invention will be described with reference to FIGS. FIG. 11 is a perspective explanatory view of a support member in the earth retaining member according to the same embodiment, and FIG. 12 is a sectional explanatory view taken along line AA of FIG.

  In the present embodiment, a screw portion 60 is formed at the upper end of the pile 32 made of a reinforced pile. The upper end of the pile 32 penetrates through holes 33 c and 33 d of the coupling member 33, and is tightened above and below the coupling member 33 by nuts 61 and 62, which are fasteners, so that the pile 32 is fixed to the coupling member 33. I have.

  When installing the earth retaining member of the present embodiment, the pile 32 is driven into a predetermined position, a nut 61 is attached to the threaded portion 60 at the upper end of the pile 32, and the threaded portion 60 of the pile 32 is inserted through the coupling member 33. The coupling member 33 is fitted into the pile 32 through the holes 33c and 33d. After that, the nut 62 is tightened to fix the pile 32 to the connecting member 33. Note that the lower nut 61 is not always necessary, and may be a flange portion or the like that can lock the coupling member 33. Further, a steel pipe can be used as the pile 32.

DESCRIPTION OF SYMBOLS 1 Earth retaining member 2 Wall member 3 Prop member 24 Simulated tree (tubular member)
31 prop (pipe-shaped member)
32, 32A, 32B pile 33 connecting member 34 reinforcing plate 35 pile fixing part

Claims (9)

An earth retaining member that supports a wall member with a plurality of support members,
The support member,
A column connected to the wall member,
Multiple piles,
See containing and a coupling member for coupling the pile of the plurality of said struts,
The coupling member has at least two pile fixing portions around the support,
The retaining member , wherein the plurality of piles are respectively fixed to the two pile fixing portions . The support is coupled to the coupling member while penetrating the coupling member ,
The retaining member according to claim 1, wherein the pillar has a length that is driven into the ground . The pile fixing part is box-shaped,
The earth retaining member according to claim 1, wherein the pile is fixed by a fixing material filled in the pile fixing portion. The earth retaining member according to claim 1, wherein the pile is fixed to the coupling member with a fastener. The earth retaining member according to any one of claims 1 to 4, wherein the pile is a deformed reinforcing pile or a steel pipe. A column connected to the wall member,
Multiple piles,
See containing and a coupling member for coupling the pile of the plurality of said struts,
The coupling member has at least two pile fixing portions around the column,
The plurality of piles is a method of installing earth retaining members respectively fixed to the two pile fixing parts ,
Driving the end of the pillar fixed to the coupling member into the ground,
Driving the plurality of piles into the ground in a state capable of being fixed with the coupling member,
Fixing the pile to the pile fixing portion of the coupling member. The method according to claim 6 , wherein at least a part of the coupling member is buried in the ground. The coupling member has a box-shaped pile fixing portion that is fixed to the pile,
8. The method of claim 6 , wherein, in the step of fixing the pile to the connecting member, the pile fixing portion is filled with mortar or concrete. 9. The method according to claim 6 or 7 , wherein in the step of fixing the pile to the coupling member, the pile is fixed with a fastener.

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