JPH04111813A - Retaining wall structure and its construction - Google Patents
Retaining wall structure and its constructionInfo
- Publication number
- JPH04111813A JPH04111813A JP23013890A JP23013890A JPH04111813A JP H04111813 A JPH04111813 A JP H04111813A JP 23013890 A JP23013890 A JP 23013890A JP 23013890 A JP23013890 A JP 23013890A JP H04111813 A JPH04111813 A JP H04111813A
- Authority
- JP
- Japan
- Prior art keywords
- retaining wall
- wall
- vertical wall
- concrete
- retaining
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 238000010276 construction Methods 0.000 title description 11
- 239000004567 concrete Substances 0.000 claims abstract description 20
- 238000000034 method Methods 0.000 claims abstract description 7
- 230000002787 reinforcement Effects 0.000 claims description 19
- 239000011178 precast concrete Substances 0.000 claims description 5
- 230000003014 reinforcing effect Effects 0.000 abstract description 6
- 239000004575 stone Substances 0.000 abstract description 4
- 230000002265 prevention Effects 0.000 description 7
- 239000002699 waste material Substances 0.000 description 5
- 230000000694 effects Effects 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 238000003466 welding Methods 0.000 description 2
- 238000005452 bending Methods 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 238000009415 formwork Methods 0.000 description 1
- 238000003780 insertion Methods 0.000 description 1
- 230000037431 insertion Effects 0.000 description 1
Landscapes
- Retaining Walls (AREA)
Abstract
Description
【発明の詳細な説明】
「産業上の利用分野」
本発明は宅地造成、土留め工事等に用いて好適な擁壁構
造およびその施工方法に関する。DETAILED DESCRIPTION OF THE INVENTION "Field of Industrial Application" The present invention relates to a retaining wall structure suitable for use in building land development, earth retaining work, etc., and a method for constructing the same.
「従来の技術およびその課題」
従来より、宅地造成や道路造成などの本設用あるいは仮
設用擁壁の一つとして、第８図に示すようなＬ型擁壁が
提供されている。"Prior Art and its Problems" Conventionally, an L-shaped retaining wall as shown in FIG. 8 has been provided as one of permanent or temporary retaining walls for building land or road construction.
図中、擁壁１は、地山２の前方において地山２の下面に
埋設された底版部４と、この底版部４から上方へ向って
立設された壁体部５とから構成されている。In the figure, the retaining wall 1 is composed of a bottom section 4 buried in the lower surface of the ground 2 in front of the ground 2, and a wall section 5 erected upward from the bottom section 4. There is.
このような構成のＬ型擁壁のうち、壁高が３７１以上の
擁壁は、宅地造成においてはすべて施工現場における場
所打ち工法により施工されているのが現状である。Among the L-shaped retaining walls having such a configuration, all retaining walls with a wall height of 371 cm or more are currently constructed using the cast-in-place method at the construction site in residential land development.
しかし、近年の型枠工等の熟練を有する作業者の労働力
不足から現場での施工が難しくなっている。However, in recent years, on-site construction has become difficult due to a shortage of skilled workers such as formwork workers.
本発明は前記事情に鑑みてなされたものであって、擁壁
の施工が容易で、特に壁高の高い擁壁であっても高強度
かつ施工性の良い擁壁構造およびその施工方法を提供す
ることを目的としている。The present invention has been made in view of the above-mentioned circumstances, and provides a retaining wall structure that is easy to construct, and in particular has high strength and good workability even for a retaining wall with a high wall height, and a method for constructing the same. It is intended to.
１課題を解決するための手段」
本発明の擁壁構造は、プレキャストコンクリートからな
る外観矩形のたて壁の下部に当該たて壁の側方へ突出す
る突出部が一体に形成され、さらに、当該突出部から配
筋が延出するように設けられて擁壁部材が構成され、複
数個の該擁壁部材が高強度継手部材によって互いに列設
状態に接続され、前記配筋に場所打ちコンクリートが打
設されてなることを特徴としている。A retaining wall structure of the present invention includes a vertical wall made of precast concrete having a rectangular appearance, and a protruding portion projecting to the side of the vertical wall integrally formed at the lower part of the vertical wall, and further comprising: Reinforcement is provided so as to extend from the protruding portion to constitute a retaining wall member, and a plurality of retaining wall members are connected to each other in a row by high-strength joint members, and cast-in-place concrete is attached to the reinforcement. It is characterized by being poured.
本発明の擁壁の施工方法は、プレキャストコンクリート
からなる外観矩形のたて壁の下部に当該たて壁の側方へ
突出する突出部を一体に形成するとともに当該突出部か
ら配筋を延出させて擁壁部材を作成し、複数個の該擁壁
部材を互いに列設状態に接続して固定し、前記配筋に場
所打ちコンクリートを打設することを特徴としている。The retaining wall construction method of the present invention includes integrally forming a protrusion that protrudes to the side of the vertical wall at the bottom of a vertical wall made of precast concrete and having a rectangular appearance, and extending reinforcement from the protruding part. The method is characterized in that a plurality of retaining wall members are created by connecting and fixing a plurality of retaining wall members in a row, and cast-in-place concrete is placed on the reinforcement.
「作用」
各擁壁部材を高強度継手部材で摩擦接合することにより
、たて壁の水平、鉛直および前後３方向のずれを無くす
ことができ、底版を場所打ちするため滑動抵抗が増すと
ともに、各擁壁部材が一体化されているために周囲の地
山がらの土圧に対して十分対応できる。``Function'' By friction-bonding each retaining wall member with high-strength joint members, it is possible to eliminate displacement of the vertical wall in the horizontal, vertical, and front-back three directions, and since the bottom plate is cast in place, sliding resistance increases, Since each retaining wall member is integrated, it can sufficiently cope with the earth pressure of the surrounding ground.
「実施例」
以下、本発明に係る擁壁構造およびその施工方法につい
て図面を参照して説明する。"Example" Hereinafter, a retaining wall structure and its construction method according to the present invention will be described with reference to the drawings.
第１図ないし第７図は本発明に係る擁壁構造の一実施例
を示す図である。なお、図中、符号８は、擁壁の構築位
置に予め敷設された砕石、９は砕石８の上に打設された
捨てコンクリートを示している。FIGS. 1 to 7 are diagrams showing one embodiment of a retaining wall structure according to the present invention. In addition, in the figure, the code|symbol 8 has shown the crushed stone laid beforehand at the construction position of a retaining wall, and 9 has shown the waste concrete poured on the crushed stone 8.
本実施例の擁壁構造は、同一形状に形成された複数個の
擁壁部材１０が互いに列設状態に固定されて概略構成さ
れている。The retaining wall structure of the present embodiment is generally configured such that a plurality of retaining wall members 10 formed in the same shape are fixed to each other in a lined state.
擁壁部材１０は、第１図に示すように、プレキャストコ
ンクリートからなる外観矩形のたて壁１２の下部に当該
たて壁Ｉ２の側方へ突出する突出部１３が一体に形成さ
れ、さらに、当該突出部１３から配筋１５が延出するよ
うに設ニブられて全体として外観り型に構成されている
。As shown in FIG. 1, the retaining wall member 10 includes a vertical wall 12 made of precast concrete and having a rectangular appearance, and a protruding portion 13 that projects laterally of the vertical wall I2, which is integrally formed at the bottom of the vertical wall 12, and further includes: The reinforcement 15 is provided so as to extend from the protruding portion 13, and the overall structure is of an external appearance.
たて壁１２は、その上部から下部へ向かうにしたがって
壁体自身の肉厚が徐々に厚くなるように形成されている
。また、たて壁Ｉ２の下部に形成された突出部１３の基
端部には、たて壁１２の曲げ耐力を向上させるためにテ
ーパ面１３ａが形成されて肉厚に形成されている。The vertical wall 12 is formed so that the thickness of the wall itself gradually increases from the top to the bottom. Furthermore, a thick tapered surface 13a is formed at the base end of the protrusion 13 formed at the lower part of the vertical wall I2 in order to improve the bending strength of the vertical wall 12.
たて壁１２の側面、すなわち接合端面１２ａには後述す
る高強度継手部材３５を収納するための継手凹所１２ｂ
が適宜離間して設けられている。A joint recess 12b for housing a high-strength joint member 35, which will be described later, is provided on the side surface of the vertical wall 12, that is, the joint end surface 12a.
are provided at appropriate intervals.
たて壁１２の突出部１３に突設された複数本の先端部に
は、外観Ｕ字状の底版用配筋１６がその端部において重
ね継手等の手段によって接続されている。さらに、前記
底版用配筋１６の途中位置からは、外観Ｕ字状の補強配
筋Ｉ７が下方へ向って延在するようにその端部において
結束線等の手段によって接続されている。この場合、前
記捨てコンクリート９には、前記補強配筋１７を収納す
るための凹所９ａが予め形成されている。これら各配筋
には、底版を形成するためのコンクリート２０（場所打
ちコンクリート）が打設される。Bottom plate reinforcements 16 having a U-shaped appearance are connected to the ends of the plurality of rods protruding from the protrusion 13 of the vertical wall 12 by means such as lap joints. Further, from a midway position of the bottom plate reinforcement 16, a reinforcing reinforcement I7 having a U-shaped appearance is connected at its end by means such as a binding wire so as to extend downward. In this case, a recess 9a for accommodating the reinforcing reinforcement 17 is formed in advance in the sacrificial concrete 9. Concrete 20 (cast-in-place concrete) is poured into each of these reinforcements to form a bottom slab.
たて壁１２は、たて壁セット用ガイド治具２３（以下、
「たて壁ガイド治具」と称する）およびたて壁セット時
転倒防止治具２５（以下、「たて壁転倒防止治具」と称
する）によって前記捨てコンクリート中に立設状態に支
持されている。The vertical wall 12 is installed using a vertical wall setting guide jig 23 (hereinafter referred to as
(referred to as a "vertical wall guide jig") and a vertical wall setting fall prevention jig 25 (hereinafter referred to as a "vertical wall fall prevention jig") in an upright state in the waste concrete. There is.
たて壁ガイド治具２３は、第２図ないし第４図に示すよ
うに、捨てコンクリート９内に埋設された凸型治具２７
と、この凸型治具２７の立片に鉛直方向に接続されたボ
ルト２８と、前記たて壁１２の下端部前面および後面に
設けられたＬ型治具２９とから構成されている。このＬ
型治具２９には、ボルト挿通用の挿通孔（図示路）が形
成されている。そして、前記ボルト２８とＬ型治具２９
とは、たて壁１２を立設させた状態で天端調整用ナツト
３０．３０によって締結固定されている。The vertical wall guide jig 23 is a convex jig 27 buried in the waste concrete 9, as shown in FIGS. 2 to 4.
, a bolt 28 vertically connected to the vertical piece of the convex jig 27 , and an L-shaped jig 29 provided on the front and rear surfaces of the lower end of the vertical wall 12 . This L
The mold jig 29 is formed with an insertion hole (path shown in the figure) for inserting a bolt. Then, the bolt 28 and the L-shaped jig 29
is fastened and fixed with top adjustment nuts 30 and 30 in a state in which the vertical wall 12 is erected.
たて壁転倒防止治具２５は、第２図においてたて壁１２
の突出部１３下端部から」一端部へ向って延びてこの突
出部１３に係止可能なＬ型に形成された治具である。そ
のたて壁転倒防止治具２５は、前記たて壁ガイド治具２
３に一体に接続されて固定されている。In FIG. 2, the vertical wall fall prevention jig 25
This is an L-shaped jig that extends from the lower end of the protrusion 13 toward one end and can be locked to the protrusion 13. The vertical wall fall prevention jig 25 is the vertical wall guide jig 2.
3 is integrally connected and fixed.
これら複数個の擁壁部材ＩＯは、高強度継手部材３５に
よって互いに列設状態に接続されている。These plurality of retaining wall members IO are connected to each other in a row by high-strength joint members 35.
高強度継手部材３５は、第５図および第６図に示すよう
に、矩形板状の継手端面板３６と、この継手端面板３６
の裏面に溶接等の手段によって接続された外観略Ｕ字状
の継手補強板３７からなる継手フランジ３８によって主
要部が構成されている。前記継手端面板３６の略中心部
には、この継手端面を貫通ずる貫通孔３６ａが形成され
ている。As shown in FIGS. 5 and 6, the high-strength joint member 35 includes a rectangular joint end plate 36 and a rectangular joint end plate 36.
The main part is constituted by a joint flange 38 consisting of a joint reinforcing plate 37 having a substantially U-shaped appearance and connected to the back surface of the joint by means such as welding. A through hole 36a is formed approximately at the center of the joint end plate 36, passing through the joint end face.
前記継手補強板３７の後部には、複数本の継手補強筋３
９が継手フランジ３８の後方へ延出する形態で設けられ
、その自由端側はたて壁１２の接合端面１２ａとは反対
側の継手凹所１２ｂ内に埋設されている。A plurality of joint reinforcing bars 3 are provided at the rear of the joint reinforcing plate 37.
9 is provided to extend rearward of the joint flange 38, and its free end side is buried in the joint recess 12b on the side opposite to the joint end surface 12a of the vertical wall 12.
そして、この高強度継手部材３５は高力ボルト４０およ
びナツト４１によってボルトナツト結合されて接続され
る。The high-strength joint member 35 is bolt-nut-bonded and connected using high-strength bolts 40 and nuts 41.
次に、本実施例の擁壁の施工方法について説明する。Next, a method for constructing a retaining wall according to this embodiment will be explained.
■ 工場または現場ヤードでプレキャスト製のたて壁１
２を製作する。■ Vertical walls made of precast in the factory or on-site yard1
Produce 2.
■ 擁壁を構築すべき地盤を掘削する。■ Excavate the ground where the retaining wall will be constructed.
■ 掘削された地盤内に砕石８を所定厚さ敷く。■ Lay crushed stone 8 to a predetermined thickness in the excavated ground.
■ 擁壁部材ＩＯの立設位置にたて壁ガイド治具２３を
セットする。■ Set the vertical wall guide jig 23 at the upright position of the retaining wall member IO.
■ 捨てコンクリート９の天端高さを天端調整用ナツト
３０で調節する。■ Adjust the height of the top of the waste concrete 9 using the top adjustment nut 30.
■ 捨てコンクリート９を打設する。この時、たて壁ガ
イド治具２３を定規として捨てコンクリド９を均すと、
たて壁セット下面の捨てコンクリート９の天端高が均一
となる。■ Place waste concrete 9. At this time, if you discard the vertical wall guide jig 23 as a ruler and level the concrete 9,
The top height of the sacrificial concrete 9 on the lower surface of the vertical wall set becomes uniform.
■ たて壁ガイド２３に合わせ、プレキャスト製のたて
壁１２を建て込む。■ Erect the precast vertical wall 12 in line with the vertical wall guide 23.
■ たて壁転倒防止用治具２５を取り付け、たて壁１２
の建て込み時の転倒を防止する。（ガイドに転倒防止用
治具を煮付は溶接する）
■ 各々のたて壁Ｉ２を高強度継手部材３５で接合する
。■ Attach the vertical wall fall prevention jig 25 and lower the vertical wall 12.
Prevent falls during construction. (Weld a fall prevention jig to the guide.) ■ Join each vertical wall I2 with a high-strength joint member 35.
［相］ 擁壁の底版部となる各種配筋の配筋作業を実施
する。[Phase] Conduct various reinforcement work that will become the bottom slab of the retaining wall.
■ たて壁ガイド治具２３およびたて壁転倒防止治具２
５を取り外す。■ Vertical wall guide jig 23 and vertical wall fall prevention jig 2
Remove 5.
■ 第７図に示すように、底版部のコンクリート２０を
打設する。■ As shown in Figure 7, pour concrete 20 for the bottom slab.
以上説明したように、本実施例の擁壁構造によれば、以
下のような効果を奏する。As explained above, the retaining wall structure of this embodiment provides the following effects.
■施工の省力化を図ることができる。■It is possible to save labor during construction.
■壁高３ｍ以下のＬ型擁壁では、普通ボルト継手による
プレキャスト擁壁が既に製品化されているが、本実施例
の擁壁では高強度継手部材３５を用いて摩擦接合するこ
とにより、たて壁部の水平、鉛直および前後３方向のず
れを無くずことかできる。また、壁高が３〜６ｍ程度の
大型擁壁に適用することができる。■For L-shaped retaining walls with a wall height of 3 m or less, precast retaining walls using ordinary bolt joints have already been commercialized, but the retaining wall of this example uses high-strength joint members 35 for friction welding. It is possible to eliminate misalignment of the wall in three directions: horizontal, vertical, and front and back. Moreover, it can be applied to a large retaining wall with a wall height of about 3 to 6 m.
■底版を場所打ちするため、従来の製品より格段に滑動
抵抗が増す。また、底版を２０尻程度の長さで場所打ち
するため、擁壁全体が一体化する。■Since the bottom plate is cast in place, the sliding resistance is significantly increased compared to conventional products. In addition, since the bottom slab is cast in place at a length of about 20 feet, the entire retaining wall is integrated.
■底版が場所打ちのため、突起着き底版構造に容易に対
応できる。■Since the bottom plate is cast in place, it can easily accommodate bottom plate structures with protrusions.
「発明の効果」
以上説明したように本発明に係る擁壁構造およびその施
工方法によれば、以下のような効果を奏する。"Effects of the Invention" As explained above, according to the retaining wall structure and its construction method according to the present invention, the following effects are achieved.
施工の省力化を図ることができる。It is possible to save labor during construction.
壁高３Ｒ以下のＬ型擁壁では、普通ボルト継手によるプ
レキャスト擁壁が既に製品化されているが、本発明の擁
壁では高強度継手部材を用いて摩擦接合することにより
、たて壁の水平、鉛直および前後３方向のずれを無くす
ことができる。また、壁高が３〜６ｍ程度の大型擁壁に
適用することができる。For L-shaped retaining walls with a wall height of 3R or less, precast retaining walls using normal bolt joints have already been commercialized, but the retaining wall of the present invention uses high-strength joint members to frictionally bond the vertical wall. It is possible to eliminate misalignment in three directions: horizontal, vertical, and front and back. Moreover, it can be applied to a large retaining wall with a wall height of about 3 to 6 m.
底版を場所打ちするため、従来の製品より格段に滑動抵
抗が増す。また、底版を２０ｍ程度の長さで場所打ちす
るため、擁壁全体が一体化する。Since the bottom plate is cast in place, the sliding resistance is significantly higher than that of conventional products. Additionally, since the bottom slab will be cast in place at a length of approximately 20m, the entire retaining wall will be integrated.
底版が場所打ちのため、突起着き底版構造に容易に対応
できる。Since the bottom plate is cast in place, it can easily accommodate bottom plate structures with protrusions.
第１図ないし第７図は本発明に係る擁壁構造の一実施例
を示す図であって、第１図は全体斜視図、第２図は擁壁
部材の側断面図、第３図および第４図は擁壁部材の下部
の拡大図、第５図は各擁壁部材の接合部を示す拡大図、
第６図は高強度継手部材の斜視図、第７図は全体斜視図
であり、第８図は擁壁構造の一従来例を示す側断面図で
ある。
１６ ・
２０ ・・
ト ）、
３５ ・・・
擁壁部材、
たて壁、
突出部、
・配筋、
底版用配筋、
補強配筋、
コンクリート
（場所打ちコンクリ−
高強度継手部材。1 to 7 are diagrams showing one embodiment of a retaining wall structure according to the present invention, in which FIG. 1 is an overall perspective view, FIG. 2 is a side sectional view of a retaining wall member, FIG. Fig. 4 is an enlarged view of the lower part of the retaining wall member, Fig. 5 is an enlarged view showing the joints of each retaining wall member,
FIG. 6 is a perspective view of a high-strength joint member, FIG. 7 is an overall perspective view, and FIG. 8 is a side sectional view showing one conventional example of a retaining wall structure. 16, 20...), 35... Retaining wall members, vertical walls, protruding parts, reinforcement, bottom slab reinforcement, reinforcement reinforcement, concrete (cast-in-place concrete, high-strength joint members).
Claims (2)
て壁の下部に当該たて壁の側方へ突出する突出部が一体
に形成され、さらに、当該突出部から配筋が延出するよ
うに設けられて擁壁部材が構成され、複数個の該擁壁部
材が高強度継手部材によって互いに列設状態に接続され
、前記配筋に場所打ちコンクリートが打設されてなるこ
とを特徴とする擁壁構造。(1) A protruding part that protrudes to the side of the vertical wall is integrally formed at the bottom of a vertical wall that is made of precast concrete and has a rectangular appearance, and furthermore, reinforcement is provided so as to extend from the protruding part. A retaining wall structure comprising: a plurality of retaining wall members connected to each other in a row by high-strength joint members; and cast-in-place concrete is poured into the reinforcements. .
て壁の下部に当該たて壁の側方へ突出する突出部を一体
に形成するとともに当該突出部から配筋を延出させて擁
壁部材を作成し、複数個の該擁壁部材を互いに列設状態
に接続して固定し、前記配筋に場所打ちコンクリートを
打設することを特徴とする擁壁の施工方法。(2) A retaining wall member is created by integrally forming a protruding part that protrudes to the side of the vertical wall at the bottom of a vertical wall made of precast concrete and having a rectangular appearance, and extending reinforcement from the protruding part. A method for constructing a retaining wall, comprising: connecting and fixing a plurality of retaining wall members to each other in a row, and pouring cast-in-place concrete onto the reinforcement.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP23013890A JPH04111813A (en) | 1990-08-31 | 1990-08-31 | Retaining wall structure and its construction |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP23013890A JPH04111813A (en) | 1990-08-31 | 1990-08-31 | Retaining wall structure and its construction |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH04111813A true JPH04111813A (en) | 1992-04-13 |
Family
ID=16903181
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP23013890A Pending JPH04111813A (en) | 1990-08-31 | 1990-08-31 | Retaining wall structure and its construction |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH04111813A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0679230U (en) * | 1993-04-27 | 1994-11-08 | 前田製管株式会社 | Warm room |
| KR100408348B1 (en) * | 2000-12-28 | 2003-12-06 | (주)종합건축사 사무소 담 | Construction Method of Retaining-Wall |
| US8860346B2 (en) | 2011-10-25 | 2014-10-14 | Ricoh Company, Ltd. | Angle detection device, motor driving device, and image forming apparatus |
| US9473054B2 (en) | 2013-12-25 | 2016-10-18 | Ricoh Company, Ltd. | Angle detection apparatus, motor driving control apparatus and angle detection method |
-
1990
- 1990-08-31 JP JP23013890A patent/JPH04111813A/en active Pending
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0679230U (en) * | 1993-04-27 | 1994-11-08 | 前田製管株式会社 | Warm room |
| KR100408348B1 (en) * | 2000-12-28 | 2003-12-06 | (주)종합건축사 사무소 담 | Construction Method of Retaining-Wall |
| US8860346B2 (en) | 2011-10-25 | 2014-10-14 | Ricoh Company, Ltd. | Angle detection device, motor driving device, and image forming apparatus |
| US9473054B2 (en) | 2013-12-25 | 2016-10-18 | Ricoh Company, Ltd. | Angle detection apparatus, motor driving control apparatus and angle detection method |
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