JP5964068B2 - A frame structure for forming a frame and a frame construction method using the frame structure - Google Patents

Description

  The present invention relates to a method for constructing a frame for reinforcing steep slopes and the like, and particularly to a frame structure for constructing a frame and a construction method using the frame structure.

  On slopes with steep slopes, a framework for preventing collapse is being constructed. This method is to construct a concrete weir-like frame with a cross-sectional shape, for example, a dome shape, in a plan view, for example, in units of 1 m to several m square, and this method frame is a core material The frame structure used as a strength member is provided. The frame structure includes an upper covering frame-shaped net frame that is a rough outline for finishing, a structural rebar combined along the longitudinal direction of the net frame, and a support anchor that supports the structural rebar. It has.

By the way, conventionally, for example, as disclosed in Patent Document 1 below, it is not sufficient to devise a structure for organically coupling the mesh frame, the structural reinforcing bar, and the support anchor, and in particular, the structural reinforcing bar is arranged. However, sufficient work has not been done on the workability at the time of carrying out the process, the ease of accurate shaping of the net frame, and the like.
Specifically, even if the structural anchor is supported by the support anchor, it is necessary to attach it via a separate member, or a method in which the reinforcing bar is attached below the support member and both are bound by a so-called wire in that state. The workability is not always good. In addition, the device for accurately setting the cross-sectional shape of the net frame has not been sufficiently devised.

JP 2010-001692 A

  The present invention has been made in consideration of these various backgrounds, and in particular, the organic reinforcing bar, the spacer, the support anchor, and the net frame are devised by devising an anchor and a separately prepared spacer. The present inventors have devised a novel combination and tried to develop a new frame structure for slope forming that can smoothly perform the construction work and a construction method using the frame structure.

A frame structure for forming a slope according to claim 1 supports a mesh frame disposed in an over-cover shape, a structural reinforcing bar combined along the longitudinal direction of the mesh frame, and the structural reinforcing bar. A support anchor and a spacer that clip-engages with the structural reinforcing bar and restricts the cross-sectional shape of the net frame, and the spacer includes a restriction rod disposed in a direction substantially along the construction base surface, and the restriction A shaping piece provided near both ends of the rod and disposed along the side body portion of the mesh frame body to regulate the shape of the mesh frame body; A clip piece having a retaining catch structure is provided .

A frame structure for forming a slope according to claim 2 is formed such that, in addition to the requirements of claim 1 , the support anchor is formed so as to project laterally from the placement strut portion and the placement strut portion. And a placement guide portion for guiding the placement dimensions is formed on the placement support column, and the reinforcement support rod allows the structural reinforcement to be supported to be set at a predetermined height. It is characterized by having a support part for the purpose.

A method for constructing a frame using a frame structure for forming a slope according to claim 3 is a method for constructing a frame against a slope, and the method for forming a slope according to claim 1 or 2 . First, the struts of the supporting anchors are driven into a predetermined position with respect to the slope, and then the structural reinforcing bars are placed on the support portions of the reinforcing bar support rods of the supporting anchors. The spacer is clip-engaged with the reinforcing bars, and the frame structure is formed on the slope as a state in which the cross-sectional shape is regulated by the shaping piece in the spacer by covering the mesh frame body on these. It is characterized in that the legal frame is constructed by placing concrete as a reference.

First, according to the first aspect of the present invention, the structural reinforcing bars are clip-engaged in a state where the structural reinforcing bars are temporarily placed in the receiving portion provided in the support anchor, and the structural reinforcing bars are positioned, and further, these members are covered. The frame structure can be quickly and accurately constructed by covering the frame with the mesh frame and regulating the cross-sectional shape of the mesh frame with the spacer. In addition , the cross-sectional shape of the net frame body is accurately adjusted by the shaping piece of the spacer, and the spacer and the structural reinforcing bar are accurately positioned by the clip piece, and the workability in assembling is good.

According to the second aspect of the present invention, the arrangement position of the structural reinforcing bars in the height direction is accurately set.

According to the invention of claim 3, construction with good workability is possible, work for arranging the structural reinforcing bars is easy, and as a result, the binding work can be performed accurately, The frame body can be installed accurately and quickly, and the frame structure can be formed in an accurate position and shape so as to realize a pre-designed frame.

It is explanatory drawing which shows the installation state of the frame structure for slope forming of this invention. It is a disassembled perspective view of a frame structure same as the above. It is explanatory drawing which shows the construction procedure of a frame structure same as the above. It is explanatory drawing which shows the construction procedure of a frame structure same as the above. It is a front view which shows two or more other examples of the net frame in the same frame structure. It is a front view which shows multiple other examples of the spacer in a frame structure same as the above. It is a front view which shows several other Examples of the support anchor in a frame structure same as the above.

  The mode for carrying out the present invention includes an embodiment described below, and includes various improved embodiments based on this technical idea.

Hereinafter, the present invention will be specifically described based on illustrated embodiments.
First, the slope G on which the frame structure for slope molding of the present invention is constructed will be described. As shown in FIG. 1, for a steep slope G, for example, a frame A is constructed as a plane girder in units of 1 m to several m squares. Prevent etc. In addition, the inside of the legal framework is used such as covering with concrete or providing natural vegetation to express a natural landscape.

  This frame A has a frame structure 1 as a structural core and is provided with concrete C so as to cover it, and has a dome-like, semicircular, elliptical or rectangular weir-like construction structure. It becomes.

Hereinafter, the frame structure 1 will be described.
As shown in FIG. 2, each member is disassembled, and an upper cover frame-shaped net frame 2 having an upper surface, for example, a dome shape, and a structural reinforcing bar 3 provided along the longitudinal direction of the net frame 2. And a spacer 4 that engages the clip with the structural reinforcing bar 3 and regulates the cross-sectional shape of the mesh frame 2, supports the structural reinforcing bar 3 mainly, and indirectly or directly supports the mesh frame 2. The support anchor 5 to be supported is a main member. The support anchor 5 and the structural reinforcing bar 3 are fixed by using, for example, a binding number wire 6, and the support anchor 5 and the net frame 2 may also be fixed by the binding number wire 6.
Hereinafter, these members will be described.

The net frame 2 is constituted by, for example, a wire net-like member, and includes a dome element line 21 having a cross-sectional direction formed in a meridian shape and a longitudinal element line 22 combined in a parallel line shape in a direction orthogonal thereto. A net-like structure is formed. As each dome element line 21 and the longitudinal element line 22, it is preferable to use a corrugated bend line in consideration of the mutual combination as an example. Further, the size of the mesh formed by the dome element line 21 and the longitudinal element line 22 is set such that the concrete C can sufficiently pass through the frame structure 1 when the concrete C is placed. .
In this embodiment, when the mesh frame 2 is divided into the top part 2A, the side body part 2B, and the grounding part 2C in the vertical direction, a fine mesh is formed from below the side body part 2B to the grounding part 2C. The upper side body portion 2B and the top portion 2A are roughly formed. When viewed in the longitudinal direction, the arrangement pitch of the dome element lines 21 may be evenly spaced or partially unequal.

  Next, the structural reinforcing bars 3 are, for example, two frames below, one above, two below, two above, and the like of the frame structure 1 so as to follow the longitudinal direction of the frame structure 1 as appropriate. 2 are provided roughly inside, and are distinguished as an upper reinforcing bar 31 and a lower reinforcing bar 32. The structural reinforcing bars usually used have a diameter of about 8 mm to 13 mm, and the length is about 1800 mm to 3600 mm in consideration of usability.

Next, the spacer 4 will be described.
This is constituted by a metal wire material such as iron as an example, and the spacer 4 is provided with a restriction rod 41 arranged in a direction substantially along the construction base surface and near both ends of the restriction rod 41. A shaped piece 42 provided along the side body portion 2B of the mesh frame body 2 to restrict the shape of the mesh frame body, and a retaining catch structure provided at a position inside the shaped piece 42 in the restriction rod 41 And a clip piece 43 having.
The restricting rod 41 restricts the rough size of the net frame 2, and the shaping pieces 42 at both ends are, for example, because the frame structure 1 has a dome shape or a triangular cross section. It is formed in a shape that is inclined in a constricted shape.
Further, the clip piece 43 is made of a wire material having sufficient elasticity, and as shown in FIG. 2, FIG. 3 (d) ii, iii, is enlarged substantially vertically and is deformed from the linear fixing portion 43a. Through the guide portion 32b, the lower claw portion 43c below is formed as an integral member. And the latching guidance part 43d is comprised in the outer side of the reverse nail | claw part 43c, and the inner side is made into the latching | locking part 43e.

Next, the support anchor 5 that supports the structural reinforcing bar 3 will be described.
This is constructed using, for example, a deformed reinforcing bar or the like, and one placing post 51 is provided at the center as an example.
This placement support | pillar part 51 is a linear member as an example, and the driving | running side (side driven into the slope G) sharpens a front-end | tip suitably. And the reinforcing bar support rod 52 is provided in the intermediate position so that it may protrude from the placing support | pillar part 51 to the left and right like a front view wing shape as an example. As an example, the reinforcing bar support rod 52 is formed by using a deformed reinforcing bar made of the same material as that of the placing support column 51, and is used to guide the placement size of the fixing portion with the placing support column 51. Let it be a placement guide 52a. Further, the reinforcing bar support rod 52 is formed so as to rise obliquely upward to the left and right, and has a tip-like shape that extends horizontally to the left and right.

The present invention is configured as described above. The construction for constructing the frame structure 1 is performed as follows, and concrete C is poured into the frame structure 1 to form the frame A.

[1. (Preparation stage)
As a preparatory stage, after clarifying the construction reference position by means of a drilling pit provided at the construction site to be constructed as appropriate, or a water thread stretched on this, the guide structure is used as a guide, and the frame structure 1 is arranged at appropriate intervals. The support anchor 5 is driven on the slope G.
At this time, if the slope G itself is rock-like and hard, the bedrock is drilled in advance with a drill D or the like in advance to facilitate the placement, and is then placed with a hammer or vibration hammer. To do.
Of course, if anchoring or hammering is not necessary to form the pilot hole H and the base state of the slope G is as much as possible from the beginning, the supporting anchor 5 is driven at regular intervals as appropriate by manual operation or the like. (FIGS. 3A and 3B). At this time, it is preferable that the placement depth is determined until the placement guide portion 52a comes into contact with the ground.

[2. (Combination of structural reinforcing bars)
Next, the structural rebar 3 is combined to support the support anchor 5, and the structural rebar 3 is placed on the reinforcing bar receiving portion 53 of the support anchor 5. After the structural rebar 3 is temporarily placed in the reinforcing bar receiving portion 53 of the support anchor 5 as described above, the structural rebar 3 (lower part) is attached to the rebar support rod 52 of the support anchor 5 using the binding wire 6 as necessary. The rebar 32) is temporarily fixed (FIG. 3C).

[3. (Engagement of spacer)
The spacers 4 are first clip-engaged with the pair of lower reinforcing bars 32 in the temporarily placed state as shown in FIGS. In this operation, the spacer 4 is pressed from above the lower reinforcing bar 32, and at the position of the clip piece 43, the inclination of the locking guide portion 43d of the clip piece 43 in the spacer 4 and the outward deflection of the deformation guide portion 43b are assisted. As described above, the lower reinforcing bar 32 is held in the locking portion 43e, and the reverse claw portion 43c prevents the withdrawal thereof.
Incidentally, at this time, the lower reinforcing bar 32 has a shape in which the reinforcing bar receiving portion 53 of the support anchor 5 extends substantially horizontally, so that the temporary holding position is easily stopped. Thereby, fixation of the lower reinforcement 32 according to the dimension set by the spacer 4 is achieved.
Note that the lower reinforcing bars 32 and reinforcing bar receiving portion 53, after the correct positioning is achieved by the spacer 4, is fixed unity track number 6 and tightened. The spacers 4 are arranged at regular intervals of about 1 to 3 for each pitch of the support anchors 5.

[4. (Installation of net frame)
For each member installed in such a state, the net frame 2 is disposed so as to cover them.
At this time, since the spacer 4 is already provided in clip engagement with the structural reinforcing bar 3 (lower reinforcing bar 32), if the mesh frame 2 is put on as shown in FIGS. The shaping pieces 42 are combined so as to follow the inside of the side body portion 2B of the net frame body 2 and act to adjust the shape of the net frame body 2. In this state, the mesh frame 2 and the spacer 4 (shaped piece 42) are fixed by the binding wire 6.
The spacer 4 and the mesh frame 2 are not limited to such a combination. For example, as shown in the left side enlarged view of FIG. The net frame 2 can be covered in such a state as to come out from the outside. This operation is made to pass through the mesh at the upper part of the shaped piece while handling the body frame 2 so as to narrow the body width. In this state, the shaping piece 42 comes into contact with the side body portion 2B of the net frame 2 to realize an accurate cross-sectional shape of the net frame 2.

  Further, in the case where the net frame 2 is, for example, a dome shape and the upper center is partially recessed and has the upper receiving portion 23, the upper rebar 31 can be disposed using this portion. Further, when the top portion of the placing support column portion 51 of the support anchor 5 penetrates the upper receiving portion 23, the support anchor 5 is fixed by the binding number wire 6 and the both are assembled. Similarly, the binding wire 6 is used to bind between the upper rebar 31 arranged in the upper receiving portion 23 and the net frame 2 or between the upper rebar 31 and the top of the support anchor 5.

  After constructing the frame structure 1 through such steps, the concrete C is sprayed onto the frame structure 1. At this time, the viscosity of the concrete C is set to such a level that the flow is prevented by the presence of the frame structure 1, and when spraying, the concrete C While C is poured, the mesh is fine in the vicinity of the grounding portion 2C, so that the concrete C is prevented from flowing out and stays inside the frame structure 1. After that, when the frame structure 1 is almost covered with the concrete C, the surface finish processing is performed by manual work using a trowel S as shown in FIG. Configure.

[Other Embodiments]
The present invention is based on the embodiment described above as one basic technical idea, but the following modifications can be considered.
Each of these modifications is made in the net frame body 2, the spacer 4, and the support anchor 5, but these are selected in a permutation combination to constitute the frame structure 1.
First, the net frame 2 has a simple dome shape as shown in FIG. 5A, a wide upper receiving portion 23 as shown in FIG. 5B, and a frame A. Various modifications such as a substantially gate-shaped cross section for forming a rectangular cross section are possible.

Further, the clip piece 43 in the spacer 4 can be formed by bending a part of the regulation rod 41 in a loop shape as shown in FIG. Further, as a modified example, a hook-shaped one as shown in FIG. 6 (b), a one with the engagement guiding portion 43d facing upward as shown in FIG. 6 (c), and the like can be given.
Furthermore, the spacer 4 is not necessarily composed of a wire, and can be formed of a press-punched steel plate as shown in FIGS. 6 (d) and 6 (e).

Next, a modified example of the support anchor 5 will be described.
First, what is shown in FIG. 7A is one in which the placement guide portion 52 a is formed of a member different from the reinforcing bar support rod 52. 7B and 7C show a structure in which the rebar support rods 52 are arranged in two upper and lower stages. In this case, the net frame 2 has a structure for supporting the upper rebar 31. It is effective when there is not.
In this case, two types, one supporting two upper reinforcing bars 31 (FIG. 7B) and one supporting one (FIG. 7C), can be considered.

  Although not shown, the reinforcing bar support rod 52 may be formed of a stamped steel plate or the like without using a deformed reinforcing bar.

G Slope A Slope C Concrete D Drill H Pilot hole S Solder S

DESCRIPTION OF SYMBOLS 1 Frame structure 2 Net frame 3 Structural reinforcement 4 Spacer 5 Support anchor 6 Binding number wire

2 Net frame 2A Top 2B Side body 2C Grounding part 21 Dome element line 22 Long element line 23 Upper receiving part

3 Structural rebar 31 Upper rebar 32 Lower rebar

4 spacer 41 regulating rod 42 shaping piece 43 clip piece 43a fixing portion 43b deformation guiding portion 43c reverse claw portion 43d locking guiding portion 43e locking portion

5 Support anchor 51 Placing support 52 Reinforcing bar support rod 52a Placing guide 53 Reinforcing bar receiving part

Claims (3)

A mesh frame disposed in an upper cover shape, a structural reinforcing bar combined along the longitudinal direction of the mesh frame, a support anchor that supports the structural reinforcing bar, a clip engagement with the structural reinforcing bar, and a mesh frame A spacer for regulating the cross-sectional shape of the body, and the spacer is provided in a direction substantially along the construction base surface, and is provided near both ends of the regulation rod, and is provided on a side body portion of the net frame body. A shaping piece that is disposed along the shaping frame and regulates the shape of the net frame, and a clip piece that is provided at an inner side of the shaping piece in the regulating rod and has a retaining catch structure for the structural reinforcing bar. A frame structure for slope forming.
The support anchor includes a placing post portion and a reinforcing bar support rod formed so as to project laterally from the placing support portion, and the placing support portion includes a placing guide portion that guides a placement dimension. is formed, also rebar supporting rod is the framing structure for the slope shaping of claim 1, wherein the equipped with bearings for such a structure rebar supporting can be set at a predetermined height .
A method for constructing a slope frame against a slope, wherein the cast strut portion of the support anchor is first defined with respect to the slope using the slope-forming frame structure according to claim 1 or 2. Next, the structural rebar is placed on the support portion of the reinforcing bar support rod in the support anchor, and then the spacer is clip-engaged with the structural rebar, and the mesh frame is placed over these spacers. The frame structure is configured as a slope with the cross-sectional shape being regulated by the shaping piece in No. 1 , and the frame is constructed by placing concrete on the basis of the frame structure. A frame construction method using a frame structure for slope forming.

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