JP2019190096A - Earth retaining member, earth retaining member installation method - Google Patents

Abstract

To provide an earth retaining member and an earth retaining member installation method for facilitating installation workability and reducing construction costs.SOLUTION: A support pillar member 3 includes a pillar 31 that is a pipe-like member connected to a wall surface member 2, a plurality of piles 32 driven into the ground, and a coupling member 33 that couples the pillar 31 and the plurality of piles 32. The coupling member 33 is a member having a rectangular cross section, and at both ends in the longitudinal direction, pile fixing portions 35 for fixing the piles 32 are integrally provided on lateral side portions by welding or the like. In the pile fixing portion 35, in a state where an upper end of the pile 32 protrudes into the pile fixing portion 35, and in a state where a space between a hole portion of the pile fixing portion 35 and the pile 32 is sealed with a sealing agent such as silicone grease, the pile fixing portion 35 is filled with a fixing material such as mortar or concrete and solidified.SELECTED DRAWING: Figure 3

Description

  The present invention relates to an earth retaining member and an installation method of the earth retaining member.

  As earth retaining members such as earth retaining fences and earth retaining walls, those using recycled plastic are used.

  Conventionally, in the earth retaining fence in which a fence body is constructed between a plurality of support columns standing at appropriate intervals on the ground surface, the support column has a tip at one end of a synthetic resin-coated steel pipe produced by coating a steel pipe with a synthetic resin. A cap-shaped body formed in a conical shape is attached, and a metal cap-shaped lid is covered on the other end, and a metal frame is attached to four sides of the mesh body made of synthetic resin. There are known earth retaining fences (Patent Document 1).

Japanese Patent Laid-Open No. 10-037200

  However, it is difficult to drive a pillar made of a steel pipe that supports wall members such as a fence body and a wall body deeply into the ground, and there is a problem that installation work of the earth retaining member is poor and construction costs are high.

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

In order to solve the above problems, the earth retaining member according to the present invention is:
A retaining member that supports the wall member with a plurality of support members,
The strut member is
A column connected to the wall member;
With multiple piles driven into the ground,
It was set as the structure containing the coupling member which couple | bonds the said support | pillar and the said several pile.

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

It is front explanatory drawing of the earth retaining member which concerns on 1st Embodiment of this invention. It is a plane explanatory drawing similarly. It is a side explanatory view similarly. It is a principal part expanded sectional view similarly. It is an isometric view explanatory drawing of a support | pillar member similarly. It is explanatory drawing with which it uses for description of the installation method of the earth retaining member. It is side surface explanatory drawing explaining the installation state of the earth retaining member in 2nd Embodiment of this invention. It is side surface explanatory drawing explaining the earth retaining member which concerns on 3rd Embodiment of this invention. It is a perspective explanatory view of the support member in the earth retaining member concerning a 4th embodiment of the present invention. It is a perspective explanatory view of the support member in the earth retaining member concerning a 5th embodiment of the present invention. It is a perspective explanatory view of the column member in the earth retaining member concerning a 6th embodiment of the present invention. It is sectional explanatory drawing which follows the AA line of FIG.

  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 a front explanatory view of the earth retaining member according to the embodiment, FIG. 2 is also a plan explanatory view, FIG. 3 is also a side explanatory view, FIG. 4 is an enlarged cross-sectional explanatory view of the main part, and FIG. FIG.

  The earth retaining member 1 includes a wall surface member 2 that retains the earth 52 and a plurality of support members 3 that support the wall surface member 2.

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

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

  The column member 3 is connected to the wall surface member 2 and is a column 31 which is a pipe-shaped member partially driven into the underground 51, a plurality of piles 32 driven into the underground 51, a column 31 and a plurality of piles And a coupling member 33 that couples the same.

  The upper end portion of the column 31 is inserted into a pseudo tree 24 that is a resin cylindrical member, and is connected to the wall surface member 2 by a bolt 41 together with the pseudo tree 24.

  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 protruding tip portion 31a protruding from the coupling member 33 at the lower end portion of the column 31 is a portion that becomes an underground pile for temporary support when the earth retaining member 1 is installed, and the protruding amount (rooting amount) is For example, 60 to 70 cm.

  The coupling member 33 has pile fixing portions 35 for fixing the piles 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 lateral direction (the direction of the width L1). It is configured to be integrated by welding or the like. The openings at both ends in the longitudinal direction of the coupling member 33 are reinforced by providing the lid member 34, but can be left open without providing the lid member 34.

  The pile fixing | fixed part 35 is a box-shaped part with a bottom, and the hole part 35a which the pile 32 penetrates is provided in the bottom part. In the pile fixing portion 35, a sealant 36 such as silicone grease is used between the hole 35 a of the pile fixing portion 35 and the pile 32 with the upper end portion of the pile 32 protruding into the pile fixing portion 35. In the sealed state, the pile fixing portion 35 is filled with a fixing material 37 such as mortar or concrete and solidified.

  Thereby, the pile 32 and the pile fixing | fixed part 35 are fixed, and the support | pillar 31 and the pile 32 are couple | bonded with the coupling member 33 firmly.

  The pile 32 is formed of a member that is easier to place in the ground 51 than the column 31. In the present embodiment, a deformed reinforcing bar pile is used as the pile 32, but the present invention is not limited to this.

  Next, the installation method of this earth retaining member is demonstrated with reference also to FIG. FIG. 6 is an explanatory diagram for explaining the installation method.

  First, as shown to Fig.6 (a), the front-end | tip part 31a of the support | pillar 31 of the support | pillar member 3 is driven into the underground 51 for a predetermined depth, for example, 60-70 cm. At this time, the coupling member 33 is fixed to the support 31 by welding or the like.

  As shown in FIGS. 2 and 5, the coupling member 33 has a longitudinal direction (the direction of the length L <b> 2) that is the front-rear direction of the wall surface member 2 (a direction perpendicular to the direction along the wall surface member 2). It arrange | positions so that the direction of the width | variety L1 may become the direction in alignment with the wall surface member 2.

  And as shown in FIG.6 (b), in the state which can fix the pile 32 with the pile fixing | fixed part 35 through the hole 35a of the pile fixing | fixed part 35 of the coupling member 33, the pile 32 is underground 51 to the predetermined depth. Type in. In this embodiment, after driving the four piles 32, the space between the hole 35a of the pile fixing portion 35 and the pile 32 is sealed with a sealant 36, and mortar, concrete, or the like is placed in the pile fixing portion 35. The fixing material 37 is poured and solidified.

  Thereby, the support | pillar 31 and the several pile 32 are couple | bonded via the coupling member 33. FIG.

  Then, as shown in FIG.6 (c), the wall surface member 2 and the support | pillar member 3 are fixed with the volt | bolt 41 etc., and the earth retaining member 1 is completed. In the present embodiment, the ground surface is a flat surface, and the coupling member 33 is embedded in the ground 51, but is not limited thereto.

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

  Moreover, sufficient strength can be ensured by receiving the force received by one column 31 in a 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 the 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 coupling member 33 can be in a state of appearing on the ground surface without being embedded 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 an explanatory side view for explaining the earth retaining member according to the embodiment.

  In the present embodiment, the height H1 of the pile fixing portion 35 of the coupling member 33 is set in the ground direction (the height of the portion fixing the column 31 of the coupling member 33 (referred to as “main body portion 33a”)). It is made higher in the direction opposite to the side connected to the wall surface member 2.

  Further, the fixing position of the column 31 to the coupling member 33 is such that the wall surface member 2 of the coupling member 33 from the column 31 is longer than the distance L21 from the column 31 to the end of the wall member 2 of the coupling member 33 on the side where the soil 52 is fastened. The distance L22 to the end opposite to the side where the soil 52 is fastened is set to be longer.

  Thus, the proof strength with respect to the earth pressure of the earth retaining member 1 improves by biasing the fixing position of the support | pillar 31 so that the distance L22 may become long.

  In addition, the piles 32A and 32B disposed on the front and rear sides of the wall surface member 2 are on the side where the soil 52 of the support wall surface member 2 is secured rather than the length h1 of the pile 32B disposed on the side of the wall surface 2 where the soil 52 is secured. The length h2 of the pile 32A arranged on the opposite side is increased.

  Thereby, even when installing the earth retaining member 1 on the inclined surface 53 or the like, the pile 32 can be driven to a sufficient depth, and the resistance of the earth retaining member 1 to 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 embodiment.

  In the present embodiment, the column member 3 is configured to be provided with two pile fixing portions 35 on the coupling member 33 and fixed by the two piles 32.

  When the height of the wall surface 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 embodiment.

  In this embodiment, the column member 3 has a configuration in which the coupling member 33 has a substantially triangular shape in a planar shape, and is provided with a pile fixing portion 35 on each of the three sides and fixed by 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 embodiment, and FIG. 12 is a cross-sectional explanatory view taken along line AA of FIG.

  In this embodiment, the screw part 60 is formed in the upper end part of the pile 32 which consists of a reinforcing bar pile. And the upper end part of the pile 32 penetrates the through-holes 33c and 33d of the coupling member 33, and is fastened by the nuts 61 and 62 which are fasteners up and down of the coupling member 33, and the pile 32 is being fixed to the coupling member 33. Yes.

  When installing the earth retaining member of the present embodiment, the pile 32 is driven into a predetermined position, the nut 61 is attached to the screw portion 60 at the upper end portion of the pile 32, and then the screw portion 60 of the pile 32 is passed through the coupling member 33. The coupling member 33 is fitted into the pile 32 through the holes 33c and 33d. Thereafter, the nut 62 is tightened to fix the pile 32 to the coupling member 33. Note that the lower nut 61 is not necessarily required, and may be a flange portion or the like that can lock the coupling member 33. In addition, a steel pipe can be used as the pile 32.

DESCRIPTION OF SYMBOLS 1 Earth retaining member 2 Wall surface member 3 Prop member 24 Pseudo-tree (tubular member)
31 Support (pipe-like member)
32, 32A, 32B Pile 33 Coupling member 34 Reinforcement plate 35 Pile fixing part

In order to solve the above problems, the earth retaining member according to the present invention is:
A retaining member that supports the wall member with a plurality of support members,
The strut member is
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 column,
The plurality of piles are configured to be fixed to the two pile fixing portions, respectively .

Claims (9)

A retaining member that supports the wall member with a plurality of support members,
The strut member is
A column connected to the wall member;
Multiple piles,
A earth retaining member, comprising: a coupling member that couples the support column and the plurality of piles. The earth retaining member according to claim 1, wherein the support column is coupled to the coupling member in a state of penetrating the coupling member. The coupling member has a box-shaped pile fixing portion for fixing the pile,
The earth retaining member according to claim 1 or 2, 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 bar pile or a steel pipe. A column connected to the wall member;
Multiple piles,
It is a method of installing a retaining member including a coupling member that couples the support column and the plurality of piles,
Driving the end of the column fixed to the coupling member into the ground;
A step of driving the plurality of piles into the ground in a state that can be fixed to the coupling member;
And a step of fixing the pile to the coupling member. The installation method of the earth retaining member according to claim 5, wherein at least a part of the coupling member is embedded in the ground. The coupling member has a box-shaped pile fixing portion to be fixed to the pile,
The method for installing the earth retaining member according to claim 7 or 8, wherein in the step of fixing the pile to the coupling member, mortar or concrete is filled in the pile fixing portion. The method for installing the earth retaining member according to claim 7 or 8, wherein, in the step of fixing the pile to the coupling member, the pile is fixed with a fastener.

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