JP2015113696A - Fitting structure for concrete form separator - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a fitting structure for a concrete form separator that helps curtailing the construction period and reducing the costs, when connecting the concrete form separator with an anchor that are fitted at different locations.SOLUTION: In a fitting structure for a concrete form separator, a plurality of anchors 3 fixed on an earth retaining wall A, and a plurality of concrete form separators 4 that retain a concrete form 1 for a wall body built adjacent to the earth retaining wall A, are fitted to position retaining components 8 installed between the earth retaining wall A and the concrete form 1. The position retaining component 8 is configured by juxtaposing a pair of guiding tubes that extend along the longitudinal direction of the earth retaining wall A, in such a manner to form a fitting groove along the longitudinal direction of the wall, between the facing surfaces of the guiding tubes. Each of the anchors 3 and the concrete form separators 4 is fitted at a prescribed location along the longitudinal direction of the fitting groove.

Description

In order to form a wall body constructed adjacent to the mountain retaining wall, it is necessary to install a formwork with a space inside the mountain retaining wall.
In order to install such a formwork, the present invention provides a plurality of anchors fixed to the retaining wall, and a plurality of formwork separators holding the formwork, wherein the retaining wall and the formwork It is related with the attachment structure of the separator for a formwork attached to the position holding member arrange | positioned between.

  Patent Document 1 includes a mountain retaining wall that functions as an outer mold frame and an inner mold frame installed on the inner surface side of the mountain retaining wall in order to construct a wall body adjacent to the mountain retaining wall (earth retaining wall). A mounting structure for a mold separator for placing concrete in between is disclosed.

  This formwork separator mounting structure is formed by connecting each of a plurality of anchors fixed to the retaining wall and each of a plurality of formwork separators holding the inner formwork to each other. A concrete placement space is provided between the mold and the formwork.

  And in order to connect the separator for a formwork arranged at a position between adjacent anchors to the anchor, a position holding shape steel functioning as a position holding member is attached across the adjacent anchors, The formwork separator is connected to the anchor via the position holding shape steel by attaching the formwork separator to the steel with a bolt.

  Bolt holes for attaching the formwork separator with bolts are pre-formed in the position holding shape steel so that the formwork separator can be securely attached even if there is an error in the attachment of the shape steel anchor. In order to be able to do so, the bolt hole is formed into a long hole along the longitudinal direction of the section steel.

  That is, in the above prior art, when the position of the formwork separator is different from the position of the anchor such as the position between adjacent anchors, a bolt hole is formed to connect the formwork separator to the anchor. The position holding shape steel is provided as a position holding member.

JP 2003-3472 A

  As described above, in the conventional mounting structure of the mold separator, the position holding member provided for connecting the mold separator and the anchor, which have different mounting positions, is provided with bolt holes at the mounting pitch of the mold separator. It is necessary to make up a shape steel formed in advance at a corresponding pitch.

For this reason, if the mounting pitch of the formwork separator is different for each construction site of the wall body, the position of the bolt holes penetrating in advance at a pitch corresponding to the mounting pitch of the formwork separator is set for each construction site. It is necessary to attach the inner mold using a member.
Therefore, it is necessary to prepare a position holding member in which bolt holes are formed at a pitch corresponding to the construction site, and there is a possibility that it is difficult to shorten the construction period and to suppress the construction cost.

  The present invention has been made in view of the above circumstances, and when a mold separator and an anchor having different mounting positions are connected to each other, a mounting structure for a mold separator that can easily shorten the construction period and reduce the construction cost. The purpose is to provide.

  The characteristic structure of the mounting structure of the separator for formwork according to the present invention is to hold a formwork for forming a plurality of anchors fixed to the mountain retaining wall and a wall body installed adjacent to the mountain retaining wall. A plurality of formwork separators is a formwork separator attachment structure attached to a position holding member disposed between the mountain retaining wall and the formwork, wherein the position holding member is A pair of guide tubes extending along the longitudinal direction of the wall of the retaining wall are arranged side by side in a state in which a mounting groove extending along the longitudinal direction of the wall is formed between the opposing surfaces of the two guide tubes. And each of the said formwork separator exists in the point attached to the predetermined position of the groove | channel longitudinal direction of the said attachment groove | channel.

In the mounting structure of the separator for formwork of this configuration, the position holding member extends along the wall longitudinal direction between the opposing surfaces of the two guide tubes, and the pair of guide tubes extending along the wall longitudinal direction of the mountain retaining wall. The mounting grooves are formed side by side in a state where they are formed.
For this reason, the position holding member which has the attachment groove | channel of an anchor and the separator for a formwork can be simply installed using a pair of guide tube which is easy to obtain.

In addition, each of the anchor and the formwork separator is attached to a predetermined position in the groove longitudinal direction of the attachment groove formed between the opposing surfaces of the two guide tubes.
For this reason, the anchor attached to the attachment groove at the position corresponding to each attachment pitch and the formwork separator can be connected via the position holding member.

  Therefore, in the case of the structure for mounting the formwork separator of this configuration, when the formwork separator and the anchor having different mounting positions are connected, the mounting pitch of the formwork separator is different for each construction site of the wall. Even in this case, since the same position holding member can be installed and the formwork can be attached, it is easy to shorten the construction period and reduce the construction cost.

  Another characteristic configuration of the present invention is that the pair of guide tubes are disposed at a position higher than the upper end line of the driven concrete for forming the wall body.

  With this configuration, the cast-in concrete does not hang over the position holding member, so after the concrete is cured, the position holding member can be removed from the formwork and reused, further shortening the construction period and reducing the construction cost. easy.

  Another feature of the present invention is that the guide tube is formed of a square pipe.

With this configuration, the plate surfaces forming one side of the square pipe can be opposed to each other, and an attachment groove having a deep depth can be formed between the opposed surfaces.
For this reason, the attitude | position of the anchor and formwork separator which were entered in the attachment groove | channel can be stabilized, and the space | interval of a mountain retaining wall and a formwork can be maintained with a sufficient precision.

It is sectional drawing which shows the wall body constructed | assembled in the state adjacent to the mountain wall. It is a side view which shows the attachment structure of the separator for formwork. It is a top view which shows the attachment structure of the separator for formwork. It is the IV-IV arrow directional view in FIG. It is the VV arrow directional view in FIG. It is the VI-VI line arrow directional view in FIG. It is the VII-VII sectional view taken on the line in FIG.

Embodiments of the present invention will be described below with reference to the drawings.
As shown in FIG. 1, a mounting structure for a separator for formwork according to the present invention (hereinafter referred to as a separator mounting structure) is made of reinforced concrete inside a concrete retaining wall A which is excavated and installed in the ground G. The wall B is provided in order to construct the wall B in an adjacent state.

  The wall B is constructed by passing the lower wall body B1, the intermediate wall body B2 and the upper wall body B3 in order on the upper part of the foundation concrete C, and in each of the construction processes of these wall bodies B1, B2, B3. Correspondingly, a separator mounting structure according to the present invention is provided.

2-7 shows the separator attachment structure which hold | maintains the steel formwork 1 for forming the lower wall body B1 in the upper part of the foundation concrete C. FIG.
As shown in FIGS. 2 and 3, this separator mounting structure is provided with a mold 1 for forming a wall-forming concrete placement space 2 between a steel mold 1 and a mountain retaining wall A. A plurality of steel anchors 3 and a plurality of steel mold separators (hereinafter referred to as separators) 4 that are held at predetermined intervals with respect to the mountain retaining wall A are provided.

  The mold 1 is formed in a box shape whose inside is reinforced with a frame member or the like. The lower end portion of the mold 1 is fixed to and supported by an anchor member 5 embedded in the foundation concrete C with a screw or the like, and the upper end of the mold 1 is supported by the separator mounting structure according to the present invention.

  A plurality of H-section steels 6 with one flange surface 6a exposed to the inside are buried in the mountain retaining wall A in a vertical posture along the vertical direction at a constant pitch along the horizontal direction. An anchor fixing receiver 7 made of angle steel is fixed by welding.

  Each anchor 3 is composed of a bolt, and as shown in FIG. 5, the anchor 3 is detachably screwed into a nut member 7 a welded and fixed to a receiver 7, and is fixed at the same height as the H-section steel 6 at a constant height position. It is fixed to the mountain retaining wall A with a pitch P1.

  Each separator 4 is composed of a bolt, and as shown in FIG. 2, the separator 4 is detachably screwed into a nut member 1 a provided on the mold 1, and is formed at a constant pitch P 2 along a horizontal direction different from the anchor 3. It is fixed to.

  Each of the anchor 3 and the separator 4 is detachably attached to a common position holding member 8 disposed between the mountain retaining wall A and the mold 1 and is connected to each other via the position holding member 8.

As shown in FIGS. 4 to 7, the position holding member 8 has a pair of upper and lower guide tubes 9 extending along the wall longitudinal direction of the mountain retaining wall A in the wall longitudinal direction between the opposing surfaces of both guide tubes 9. The mounting grooves 10 extending along the line are formed in parallel.
Both guide tubes 9 are constituted by square pipes having a square cross-sectional shape.

  The mounting groove 10 makes the plate surfaces forming one side of the guide tube 9 face each other with a gap, and as shown in FIG. 7, the spacer member 11 sandwiched between the plate surfaces is fixed by welding. And it forms in the slit shape which the both sides of a groove depth direction open toward a horizontal direction.

  As shown in FIG. 2, the anchor 3, the separator 4, and the pair of guide pipes (position holding members 8) 9 are disposed at a position higher than the upper end line L of the driven concrete 12 for forming the lower wall body B <b> 1. ing.

Each anchor 3 is inserted into the mounting groove 10 at a fixed pitch P for anchoring, and is attached to a predetermined position in the groove longitudinal direction of the mounting groove 10.
As shown in FIG. 5, the anchor 3 is detachably fixed to the position holding member 8 with a pair of nut members 3b screwed into the anchor 3 so as to sandwich the pair of guide tubes 9 via the washers 3a.

Each separator 4 is inserted into the attachment groove 10 at a constant pitch P2 for the separator, and is attached to a predetermined position in the groove longitudinal direction of the attachment groove 10.
As shown in FIG. 6, the separator 4 is detachably fixed to the position holding member 8 with a pair of nut members 4b screwed into the anchor 3 so as to sandwich a pair of guide tubes via a washer 4a.

  And as shown in FIG. 2, the lower part of the formwork 1 at the time of constructing the reinforcing steel basket 13 and the intermediate wall body B2 is supported in the placement space 2 formed between the mountain retaining wall A and the formwork 1 As shown in FIG. 1, the lower wall body B1 is constructed by holding the anchor member 5 and the like used for the position and placing concrete 12 in the placement space 2.

  After the construction of the lower wall body B1, although not shown, the same separator for constructing the intermediate wall body B2 and the upper wall body B3 by removing the mold 1, the anchor 3, the separator 4, the position holding member 8 and the like. Install the mounting structure.

[Other Embodiments]
1. The mounting structure of the mold separator according to the present invention includes an anchor, a mold separator, a position holding member, etc. corresponding to each support position in order to support a plurality of positions in the vertical direction of the mold. Also good.
2. In the mounting structure of the separator for formwork according to the present invention, both or one of the pair of guide tubes constituting the position holding member may be formed of a round pipe.
3. In the attachment structure of the mold separator according to the present invention, each of the anchor and the mold separator may be attached to the position holding member at an irregular pitch.
4). The attachment structure of the separator for formwork by this invention may be installed in order to construct | assemble a wall body in the adjacent state in the mountain retaining wall comprised in series by metal plate materials, such as a steel sheet pile.
5. The mounting structure of the separator for formwork according to the present invention may be installed to construct a wall body that is not integrally joined to the mountain retaining wall in a state adjacent to the mountain retaining wall.

DESCRIPTION OF SYMBOLS 1 Formwork 3 Anchor 4 Formwork separator 8 Position holding member 9 Guide pipe 10 Mounting groove 12 Drive-in concrete A Yamadome wall B1, B2, B3 Wall body L Upper end line

Claims (3)

A plurality of anchors fixed to the mountain retaining wall, and a plurality of formwork separators for holding a formwork for forming a wall body constructed adjacent to the mountain retaining wall, the mountain retaining wall and the A mounting structure for a separator for a mold that is attached to a position holding member disposed between the mold and
The position holding member is provided with a pair of guide tubes extending along the longitudinal direction of the wall of the mountain retaining wall in a state in which a mounting groove extending along the longitudinal direction of the wall is formed between opposing surfaces of the guide tubes. Configured,
A mounting structure for a mold separator, wherein each of the anchor and the mold separator is mounted at a predetermined position in the groove longitudinal direction of the mounting groove.   The mounting structure of the separator for formwork of Claim 1 by which the said pair of guide pipe is arrange | positioned in the position higher than the upper end line of the placing concrete for forming the said wall body.   The mounting structure of the separator for formwork of Claim 1 or 2 with which the said guide pipe is comprised from the square pipe.

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