JP4959452B2 - Combined steel sheet piles for preserving earth retaining walls or constructions and preserving earth retaining walls or constructions - Google Patents

Combined steel sheet piles for preserving earth retaining walls or constructions and preserving earth retaining walls or constructions Download PDF

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JP4959452B2
JP4959452B2 JP2007181332A JP2007181332A JP4959452B2 JP 4959452 B2 JP4959452 B2 JP 4959452B2 JP 2007181332 A JP2007181332 A JP 2007181332A JP 2007181332 A JP2007181332 A JP 2007181332A JP 4959452 B2 JP4959452 B2 JP 4959452B2
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JP2009019373A (en
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滋樹 寺崎
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Nippon Steel Corp
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本発明は、港湾岸壁施設、埋立護岸、都市内の盛土、地下掘削工事などの土留め壁などに使用する控え式土留め壁用または控え工用鋼矢板および控え式土留め壁または控え工に関する。   TECHNICAL FIELD The present invention relates to a steel retaining sheet pile for use in a retaining wall for use in harbor quay facilities, landfill revetments, city banking, underground excavation work, etc. .

断面略U字型鋼矢板とH形状をした形鋼を略T字またはY字形状に固着し成形した組み合わせ鋼矢板は、古くから知られ利用されている。これらの鋼矢板は、通常の鋼矢板の断面性能では、設計上必要な断面性能を満足することができない場合があるので、H形形状の形鋼を鋼矢板に溶接などにより固着して、全体の断面形状をY字状あるいはT字状とした組み合わせ鋼矢板として、より大きな断面性能がえられる組み合わせ鋼矢板が知られている。   A combined steel sheet pile obtained by adhering a substantially U-shaped steel sheet pile and a H-shaped steel sheet to a substantially T-shaped or Y-shaped steel has been known and used for a long time. Since these steel sheet piles may not satisfy the cross-sectional performance required for design with the cross-sectional performance of ordinary steel sheet piles, the H-shaped shaped steel is fixed to the steel sheet pile by welding or the like. As a combined steel sheet pile having a Y-shaped or T-shaped cross-sectional shape, a combined steel sheet pile capable of obtaining a larger sectional performance is known.

例えば、図14に示すように、冷間成形された断面略U字状部を備えた鋼矢板27にH形鋼6のフランジ6aを溶接により固着して、断面略T字状に成形した組合せ矢板が知られている(例えば、特許文献1参照)。   For example, as shown in FIG. 14, a combination in which a flange 6a of an H-shaped steel 6 is fixed to a steel sheet pile 27 having a substantially U-shaped section that is cold-formed by welding to form a substantially T-shaped section. A sheet pile is known (see, for example, Patent Document 1).

また、図15に示すように、熱間圧延された略U字状部を備えた鋼矢板2aにおける溝と反対側におけるフランジ外面に、断面略H字状の形鋼6を溶接により固着して、全体の断面形状が、断面略H字状の形鋼を溶接により固着して、断面略Y字状に固着し成形した組み合せ鋼矢板28も知られている。(例えば、特許文献2参照)   Further, as shown in FIG. 15, a section steel 6 having a substantially H-shaped cross section is fixed to the outer surface of the flange on the side opposite to the groove in the steel sheet pile 2 a having a substantially U-shaped portion that is hot-rolled by welding. A combined steel sheet pile 28 is also known in which a section steel having a substantially H-shaped cross section is fixed by welding and fixed to a substantially Y-shaped cross section. (For example, see Patent Document 2)

なお、図16に示すように、控え工としては、鋼矢板21aを地中に埋め込むように設けて、タイロッド等のアンカー材17と連結する形態、あるいは図17に示すように控え工として鋼管杭21bあるいはH形鋼杭等を用いる形態も知られている。
実開昭60−186343号公報 特開2002―212943号公報
In addition, as shown in FIG. 16, steel piles 21a are provided so as to be embedded in the ground and connected to an anchor material 17 such as a tie rod, or as shown in FIG. Forms using 21b or H-shaped steel piles are also known.
Japanese Utility Model Publication No. 60-186343 Japanese Patent Laid-Open No. 2002-212943

これらの組み合せ鋼矢板を控え式の土留め壁に用いる場合、土留め壁には土水圧による側圧が作用するので、図12に示すように、鋼矢板頭部には、腹起し材15を介して棒状鋼材あるいは防錆被覆されたロープ材などのアンカー材17を固定し、そのアンカー材17を介して側圧に抵抗可能な抵抗力をもつアンカー工(控え工21)に固定するのが一般的である。   When these combined steel sheet piles are used for a retaining type retaining wall, a lateral pressure due to soil water pressure acts on the retaining wall, so as shown in FIG. It is common to fix an anchor material 17 such as a rod-shaped steel material or a rust-prevented rope material via an anchor material, and fix the anchor material (rescue work 21) having a resistance capable of resisting side pressure via the anchor material 17. Is.

腹起し材15は、図13(a)〜(b)に示すように、通常、間隔をおいて平行に配置された1組の溝形鋼16で構成され、図13(c)および(d)に示されるように、所定の間隔を保つようまた一体として挙動するよう、添え板23で連結固定され、ボルトあるいは溶接などにより鋼矢板に固定される。永久構造物の土留め壁の場合、図12の一点鎖線で示す範囲の鋼矢板頭部を、腹起し材15、アンカー材17の定着部を含め、防錆機能と衝突などに対する保護機能向上のため、および鋼矢板壁の一体化のための拘束力を期待して鉄筋コンクリートにより巻きたててコーピング22を設けるのが一般的である。   As shown in FIGS. 13A to 13B, the anti-raising material 15 is usually composed of a pair of channel steels 16 arranged in parallel at intervals, as shown in FIGS. As shown in d), they are connected and fixed by a splicing plate 23 so as to behave as a single unit while maintaining a predetermined distance, and are fixed to a steel sheet pile by bolts or welding. In the case of the earth retaining wall of a permanent structure, the steel sheet pile head in the range indicated by the one-dot chain line in FIG. Therefore, it is common to provide a coping 22 which is wound with reinforced concrete in anticipation of a binding force for integration of steel sheet pile walls.

これらの組合せ鋼矢板1は、通常の断面性能では不足するような大規模な土留め壁に適用されることが多く、使用するアンカー材17も、例えば直径50mmを超える大断面になることが多い。   These combined steel sheet piles 1 are often applied to large-scale retaining walls that are insufficient for normal cross-sectional performance, and the anchor material 17 used often has a large cross section exceeding, for example, a diameter of 50 mm. .

アンカー材17を挿通配置させるための貫通孔は、通常、断面略U字状部を備えた鋼矢板上に現場で高熱ガスなどを用いて空けるが、上記組合せ鋼矢板は、図11に示すa部は鋼矢板の継手14があるため、またb部は傾斜したウェブ5であるため、さらにc部は断面H状の形鋼6があるため、現場でのガス切断による孔明け作業に非常に時間がかかり、孔明け作業を安全に行えないばかりでなく、現場作業費が割高であった。
本発明は前記の課題を有利に解消することができ、組合せ鋼矢板に対する現場作業を少なくし現場作業費を低減可能な控え式土留め壁用鋼矢板または控え工用鋼矢板および控え式土留め壁または控え工を提供することを目的とする。
The through-hole for inserting and arranging the anchor material 17 is usually vacated on the steel sheet pile having a substantially U-shaped section on the site by using a hot gas or the like. Since the part has a steel sheet pile joint 14, the part b is an inclined web 5, and the part c has a section steel 6 having a H-shaped cross section, it is very useful for drilling work by gas cutting in the field. Not only was it time consuming to drill holes safely, but the on-site work costs were high.
The present invention can advantageously solve the above-mentioned problems, can reduce the field work for the combined steel sheet piles, and can reduce the field work cost. The purpose is to provide walls or laying.

前記の課題を有利に解決するために、第1発明の控え式土留め壁用組合せ鋼矢板においては、断面略U字状部を備えた鋼矢板の溝側またはその溝側と反対側のフランジ外面に断面略H字状の形鋼を固着した断面略T字状または断面略Y字状の組み合わせ鋼矢板において、その組み合わせ鋼矢板を構成する断面略U字状部を備えた鋼矢板と、断面略H字状の形鋼のいずれか一方の部材の上端レベルを低く、他方の部材の上端レベルを高くして、腹越し材配置用段部を設け、かつ上端レベルが高くされた前記他方の部材の上端部に、アンカー材を介して控え工に連結される腹起し材を取り付けるための腹起し材取り付け部が設けられていることを特徴とする。
第2発明では、第1発明の控え式土留め壁用組合せ鋼矢板において、鋼矢板頭部において、断面略U字状部を備えた鋼矢板の上端レベルが、断面略H字状の形鋼の上端レベルより高くされていることを特徴とする。
第3発明では、第1発明の控え式土留め壁用組合せ鋼矢板において、鋼矢板頭部において、断面略H字状の形鋼の上端レベルを、断面略U字状部を備えた鋼矢板の上端レベルより高くされていることを特徴とする。
第4発明の控え工用組合せ鋼矢板においては、断面略U字状部を備えた鋼矢板の溝側またはその溝側と反対側のフランジ外面に断面略H字状の形鋼を固着した断面略T字状または断面略Y字状の組み合わせ鋼矢板において、その組み合わせ鋼矢板を構成する断面略U字状部を備えた鋼矢板と、断面略H字状の形鋼のいずれか一方の部材の上端レベルを低く、他方の部材の上端レベルを高くして、腹越し材配置用段部を設け、かつ上端レベルが高くされた前記他方の部材の上端部に、アンカー材を介して土留め壁に連結される腹起し材を取り付けるための腹起し材取り付け部が設けられていることを特徴とする。
第5発明の控え式土留め壁においては、第1発明の控え式土留め壁用組合せ鋼矢板が地盤に打設されると共に継ぎ手相互が噛み合わされて土留め壁が構成され、腹越し材配置用段部に腹起し材が配置されて、上端レベルが高くされた前記他方の部材の上端部に設けた腹起し材取り付け部に、腹越し材が取り付けられ、その腹越し材にアンカー材を介して控え工が連結されていることを特徴とする。
第6発明の控え工においては、請求項4に記載の控え工用組合せ鋼矢板が地盤に打設されて控え工用壁体が構成され、腹越し材配置用段部に腹起し材が配置されて、上端レベルが高くされた前記他方の部材の上端部に設けた腹起し材取り付け部に、腹越し材が取り付けられ、その腹越し材にアンカー材を介して土留め壁が連結されていることを特徴とする。
In order to solve the above-mentioned problem advantageously, in the combined steel sheet pile for the retaining wall retaining wall of the first invention, the steel sheet pile having a substantially U-shaped cross section or the flange on the opposite side to the groove side In a combined steel sheet pile having a substantially T-shaped section or a substantially Y-shaped cross section with a substantially H-shaped section steel fixed to the outer surface, a steel sheet pile having a substantially U-shaped section that forms the combined steel sheet pile, The other one of which the upper end level of any one of the members having a substantially H-shaped cross section is lowered, the upper end level of the other member is increased, an abdominal material placement step is provided, and the upper end level is increased An upper portion of the member is provided with an erection material attaching portion for attaching an erection material connected to a laying work via an anchor material.
In the second invention, in the combined steel sheet pile for the retaining type retaining wall of the first invention, the steel sheet pile head having a substantially U-shaped section at the upper end level of the steel sheet pile head has a substantially H-shaped section steel. It is characterized by being higher than the upper end level.
In the third invention, the steel sheet pile having a substantially U-shaped section at the upper end level of the section steel having a substantially H-shaped section at the head of the steel sheet pile head in the steel sheet pile head portion of the first invention. It is characterized by being higher than the upper end level.
In the combined steel sheet pile for preparatory work of the fourth invention, a cross-section in which a substantially H-shaped section steel is fixed to a groove side of a steel sheet pile having a substantially U-shaped section or a flange outer surface opposite to the groove side. In a combined steel sheet pile having a substantially T-shape or a substantially Y-shaped cross section, either a steel sheet pile having a substantially U-shaped cross section constituting the combined steel sheet pile or a section steel having a substantially H-shaped cross section The upper end level of the other member is lowered, the upper end level of the other member is increased, an abdominal material placement step is provided, and the upper end portion of the other member with the higher upper end level is secured via an anchor material. An erection material attaching portion for attaching an erection material connected to the wall is provided.
In the reserved earth retaining wall of the fifth invention, the combined steel sheet pile for the reserved earth retaining wall of the first invention is driven on the ground and the joints are engaged with each other to form the earth retaining wall, and the overhanging material arrangement An abdominal material is attached to the abdominal material attachment portion provided at the upper end of the other member having a higher upper end level, and an abdominal material is attached to the stepped portion, and anchored to the abdominal material It is characterized in that a laying work is connected through a material.
According to a sixth aspect of the present invention, the combination steel sheet pile for a lower construction according to claim 4 is placed on the ground to form a wall for the lower construction, and the belly raising material is provided on the stepping material placement step. An abdominal material is attached to the abdominal material attachment part provided at the upper end of the other member that is arranged and the upper end level is increased, and the earth retaining wall is connected to the abdominal material via an anchor material. It is characterized by being.

第1または第4発明によると、単に、組み合わせ鋼矢板を構成する断面略U字状部を備えた鋼矢板と、断面略H字状の形鋼のいずれか一方の部材の上端レベルを低く、他方の部材の上端レベルを高くするだけで、腹越し材配置用段部を設けることができ、また、上端レベルが高くされた前記他方の部材の上端部に、腹起し材取り付け部を容易に形成することができ、一方の部材および他方の部材の両方に腹起し材取り付け部を設ける必要のない組み合わせ鋼矢板とすることができる。
また、アンカー材を取り付ける鋼矢板頭部において、断面略U字状部を備えた鋼矢板と断面略H字状の形鋼とが腹起こし材取り付け部において重なるように干渉しない組合せ鋼矢板部とすることができるので、アンカー材は組み合わせ鋼矢板に現場貫通孔を設けずに固定でき、また、断面略U字状部を備えた鋼矢板に現場貫通孔をあける場合も、断面略U字状部を備えた鋼矢板と面略H字状の形鋼とが重なるように干渉しない組合せ鋼矢板部が提供できるので、現場穴あけ作業が大幅に軽減できる。
また、腹起こし材取付部が設けられていない断面略U字状部を備えた鋼矢板あるいは断面略H字状の形鋼は短くなるので、材料費を削減できるとともに、腹起こし材を断面略U字状部を備えた鋼矢板の背面に固定する場合は、腹起こし材やアンカー材頭部が組合せ鋼矢板の前面側に大きく突出することなく収まるので、コンクリートコーピング材料の体積を大幅に削減できる。
第2発明によると、断面略U字状部を備えた鋼矢板の頭部の位置(上端レベル)を、断面略H字状の形鋼の頭部の位置(上端レベル)より高く配置した組み合わせ鋼矢板を提供することができ、またそのような組み合わせ鋼矢板を使用すれば、アンカー材および腹起こし材を取り付ける鋼矢板頭部に、断面略U字状部を備えた鋼矢板と断面略H字状の形鋼とが干渉しない組合せ鋼矢板部が提供できるので、従来技術として通常の断面略U字状部を備えた鋼矢板のみの場合と同様に、組み合わせ鋼矢板においても、腹起こし材を断面略U字状部を備えた鋼矢板の前面あるいは背面に固定することができる。
第3発明によると、断面略H字状の形鋼の頭部の位置(上端レベル)を、断面略U字状部を備えた鋼矢板の頭部の位置(上端レベル)より高く配置した組み合わせ鋼矢板を提供することができ、またそのような組み合わせ鋼矢板を使用すれば、アンカー材および腹起こし材を取り付ける鋼矢板頭部に、断面略U字状部を備えた鋼矢板と断面略H字状の形鋼とが干渉しない組合せ鋼矢板部が提供できるので、腹起こし材を断面略H字状の形鋼の前面あるいは背面に固定することができる。
第5発明によると、第1〜第3発明のいずれかの控え式土留め壁用組合せ鋼矢板が地盤に打設されると共に継ぎ手相互が噛み合わされて土留め壁が構成され、腹越し材配置用段部に腹起し材が配置されて、上端レベルが高くされた前記他方の部材の上端部に設けた腹起し材取り付け部に、腹越し材が取り付けられ、その腹越し材にアンカー材を介して控え工が連結されているので、腹越し材を容易に取り付け可能な簡単な構造の控え式土留め壁とすることができ、施工の容易な安価な土留め壁とすることができる。
第6発明によると、第4発明のいずれかの控え式土留め壁用組合せ鋼矢板が地盤に打設されて控え工用壁体が構成され、腹越し材配置用段部に腹起し材が配置されて、上端レベルが高くされた前記他方の部材の上端部に設けた腹起し材取り付け部に、腹越し材が取り付けられ、その腹越し材にアンカー材を介して土留め壁が連結されているので、腹越し材を容易に取り付け可能な簡単な構造の控え工とすることができ、施工の容易な安価な控え工とすることができる。
According to the first or fourth invention, simply lowering the upper end level of any one of the steel sheet pile having a substantially U-shaped section and a section steel having a substantially H-shaped cross section constituting the combined steel sheet pile, By simply increasing the upper end level of the other member, a step portion for placing the abdominal material can be provided, and an abdomen attachment portion can be easily provided at the upper end portion of the other member having a higher upper end level. It is possible to provide a combined steel sheet pile that does not require the erection material attachment portion to be provided on both one member and the other member.
Further, in the steel sheet pile head to which the anchor material is attached, a steel sheet pile having a substantially U-shaped cross section and a combined steel sheet pile portion that does not interfere so that the steel sheet pile having a substantially H-shaped cross section overlaps in the flared material attaching section. The anchor material can be fixed to the combined steel sheet pile without providing an on-site through-hole, and also when the on-site through hole is formed in a steel sheet pile with a substantially U-shaped section, the anchor material can be fixed. Since the combination steel sheet pile part which does not interfere so that the steel sheet pile provided with the part and the surface H-shaped section steel may overlap can be provided, the on-site drilling operation can be greatly reduced.
Moreover, since the steel sheet pile provided with the substantially U-shaped section or the section steel having the substantially H-shaped cross section in which the urging member mounting portion is not provided is shortened, the material cost can be reduced and the erected material can be reduced in cross section. When fixing to the back of steel sheet piles with U-shaped parts, the volume of concrete coping material is greatly reduced because the flank and anchor material heads fit into the front side of the combined steel sheet pile without significant protrusion. it can.
According to the second invention, the position (upper end level) of the head of the steel sheet pile having the substantially U-shaped section is arranged higher than the position (upper end level) of the head of the section steel having a substantially H-shaped section. A steel sheet pile having a substantially U-shaped cross section and a substantially H-shaped cross section can be provided on the steel sheet pile head to which the anchor material and the bellows material are attached. Since a combined steel sheet pile portion that does not interfere with the shaped steel bar can be provided, as in the case of only a steel sheet pile having a generally U-shaped cross section as a conventional technique, an angling material is also provided in a combined steel sheet pile Can be fixed to the front surface or the back surface of the steel sheet pile having a substantially U-shaped section.
According to the third invention, the position (upper end level) of the head of the section steel having a substantially H-shaped cross section is arranged higher than the position (upper end level) of the head of the steel sheet pile having a substantially U-shaped section. A steel sheet pile having a substantially U-shaped cross section and a substantially H-shaped cross section can be provided on the steel sheet pile head to which the anchor material and the bellows material are attached. Since the combined steel sheet pile part which does not interfere with the letter-shaped section steel can be provided, the bellows material can be fixed to the front surface or the rear surface of the section steel having a substantially H-shaped cross section.
According to the fifth invention, the combined steel sheet pile for the reserved retaining wall according to any one of the first to third inventions is placed on the ground and the joints are meshed with each other to form the retaining wall. An abdominal material is attached to the abdominal material attachment portion provided at the upper end of the other member having a higher upper end level, and an abdominal material is attached to the stepped portion, and anchored to the abdominal material Since the laying work is connected through the material, it is possible to make a laying-type retaining wall with a simple structure that can easily attach the abdominal covering material, and to make it an inexpensive retaining wall that is easy to construct. it can.
According to the 6th invention, the combined steel sheet pile for the retaining-type earth retaining wall according to any of the 4th inventions is placed on the ground to constitute the wall for the construction of the construction, and the lining material is disposed on the stepping material placement step. Is placed, and the waistline material is attached to the waistline material attachment portion provided at the top end portion of the other member whose upper end level is increased, and the earth retaining wall is attached to the waistline material via the anchor material. Since they are connected, it is possible to provide a simple construction with a structure that allows easy attachment of the stomach lining material, and an inexpensive construction with an easy construction.

次に、本発明を図示の実施形態に基づいて詳細に説明する。     Next, the present invention will be described in detail based on the illustrated embodiment.

先ず、図1および2を参照しながら、本発明の控え式土留め壁用組合せ鋼矢板1の基本構成を説明するための代表形態としての断面略Y字形状の組み合わせ鋼矢板1Aの一形態について説明すると、この断面略Y字形状の組み合わせ鋼矢板1Aは、断面略U字状部を備えた鋼矢板2と、断面略H字状の形鋼6とを組み合わせたものである。   First, referring to FIGS. 1 and 2, one embodiment of a combined steel sheet pile 1 </ b> A having a substantially Y-shaped cross section as a representative form for explaining the basic configuration of the combined steel sheet pile 1 for a retaining wall retaining wall according to the present invention. Explaining, this combined steel sheet pile 1A having a substantially Y-shaped cross section is a combination of a steel sheet pile 2 having a substantially U-shaped section and a section steel 6 having a substantially H-shaped cross section.

前記の断面略U字状部を備えた鋼矢板2は、図示の形態では、ハット形鋼矢板2からなる断面略U字状部を備えた鋼矢板2である。このハット形鋼矢板2の特徴として、フランジ7の両端部に外側に向かって広がるように傾斜したウェブ5が一体に連設され、各ウェブ5に前記フランジ7と平行にアーム部3,4が一体に連設され、各アーム部3,4の端部に、継手14が一体に形成されている断面ハット形のハット形鋼矢板2であり、左右の各継手14は、アーム部3,4の中心軸線の中央点に対して、点対称形状の継手14とされ、隣り合うハット形鋼矢板2相互の継手14を嵌合した場合に、アーム中心軸線上にハット形鋼矢板2を配設することも可能にされている。なお、符号12aおよび12bは継手における溝、13は係止爪部、14は継手である。   In the illustrated form, the steel sheet pile 2 provided with the substantially U-shaped section is the steel sheet pile 2 including the substantially U-shaped section formed of the hat-shaped steel sheet pile 2. As a characteristic of the hat-shaped steel sheet pile 2, webs 5 inclined so as to spread outward are integrally provided at both end portions of the flange 7, and the arm portions 3, 4 are parallel to the flange 7 on each web 5. A hat-shaped steel sheet pile 2 having a hat-shaped cross section in which joints 14 are integrally formed at end portions of the respective arm portions 3 and 4. The left and right joints 14 are respectively connected to the arm portions 3 and 4. A joint 14 having a point-symmetric shape with respect to the center point of the central axis of the steel sheet, and when the joints 14 of the adjacent hat-shaped steel sheet piles 2 are fitted, the hat-shaped steel sheet pile 2 is disposed on the arm central axis. It is also possible to do. Reference numerals 12a and 12b are grooves in the joint, 13 is a locking claw portion, and 14 is a joint.

図1および図2に示す形態の控え式土留め壁用組合せ鋼矢板1では、H形鋼からなる断面略H字状の形鋼6の一方のフランジ6aが、断面略U字状部を備えた鋼矢板2における溝側と反対側のフランジ7外面に、部材長手方向に重合するように配置され、フランジ6aの側縁部が連続または断続した溶接Wにより固定された断面略Y字形状の組み合わせ鋼矢板1Aとしている。   In the combined steel sheet pile 1 for a retaining retaining wall in the form shown in FIGS. 1 and 2, one flange 6a of a section steel 6 having a substantially H-shaped section made of H-shaped steel is provided with a section having a substantially U-shaped section. The steel sheet pile 2 is arranged on the outer surface of the flange 7 opposite to the groove side so as to overlap in the longitudinal direction of the member, and the side edge of the flange 6a is fixed by continuous or intermittent welding W. The combined steel sheet pile 1A is used.

そして、本発明の控え式土留め壁用組合せ鋼矢板1では、組み合わせ鋼矢板を構成する断面略U字状部を備えた鋼矢板2と、断面略H字状の形鋼6のいずれか一方の部材(図示の形態では、断面略H字状の形鋼6)の上端レベルを低く、他方の部材(図示の形態では、断面略U字状部を備えた鋼矢板2)の上端レベルを高くして、腹越し材配置用段部8を設け、かつ上端レベルが高くされた前記他方の部材の上端部に、アンカー材を介して控え工に連結される腹起し材を取り付けるための腹起し材取り付け部8aが設けられている。   And in the combined steel sheet pile 1 for a retaining-type retaining wall of the present invention, either the steel sheet pile 2 having a substantially U-shaped cross section constituting the combined steel sheet pile or the shaped steel 6 having a substantially H-shaped cross section. The upper end level of the other member (in the illustrated form, the steel plate 6 having a substantially H-shaped cross section) is lowered, and the upper end level of the other member (in the illustrated form, the steel sheet pile 2 having a substantially U-shaped cross section). For providing an abdominal material to be connected to a laying work via an anchor material, at the upper end of the other member having a higher upper end level provided with a stepped portion 8 for placing the abdominal material. An abdominal material attaching portion 8a is provided.

図1、2に示す一実施形態の断面略Y字形状の組み合わせ鋼矢板1Aを主要部とする控え式土留め壁用組合せ鋼矢板1をさらに説明すると、図1は実施形態1の控え式土留め壁用組合せ鋼矢板1の継手相互を連結した状態を示す平面図であり、図2はその側面図である。   1 and 2, the combined steel sheet pile 1 for a retaining wall retaining wall mainly including the combined steel sheet pile 1A having a substantially Y-shaped cross section according to the embodiment shown in FIGS. 1 and 2 will be described. It is a top view which shows the state which connected the joint of the combination steel sheet pile 1 for a retaining wall, FIG. 2 is the side view.

この形態の控え式土留め壁用組合せ鋼矢板1では、断面略U字状部を備えた鋼矢板2と断面略H字状の形鋼6を断面略Y字状に固着し成形した断面略Y字形状の組み合わせ鋼矢板1Aにおいて、断面略U字状部を備えた鋼矢板2の頭部の位置(上端レベル)を、断面略H字状の形鋼6の頭部の位置(上端レベル)より高く配置している。そして、断面略U字状部を備えた鋼矢板2の上端部のフランジ7に、上下方向および幅方向(左右方向)に間隔をおいて複数のボルト挿通孔8bを設けて腹起し材取り付け部8aとした控え式土留め壁用組合せ鋼矢板1である。前記のような控え式土留め壁用組合せ鋼矢板1では、断面略U字状部を備えた鋼矢板2と断面略H字状の形鋼6との上端面のレベル差により段部が形成されており、そのような段部空間に腹起し材15を配置できると、腹起し材15が土留め壁面に直角な横方向に出っ張らないので収まりがよく、組み合わせ鋼矢板の上端部を被覆する鉄筋コンクリート等のコーピング(図12参照)を、図12に示す場合よりも横方向に出っ張らなくなる分小さくすることができる。   In the combined steel sheet pile 1 for the retaining-type retaining wall in this form, the cross section of the steel sheet pile 2 provided with a substantially U-shaped section and the shaped steel 6 having a substantially H-shaped section are fixed in a substantially Y-shaped section. In the Y-shaped combined steel sheet pile 1A, the position of the head of the steel sheet pile 2 having a substantially U-shaped section (upper level) is the position of the head of the section steel 6 having an approximately H-shaped section (upper level). ) Place higher. And the flange 7 of the upper end part of the steel sheet pile 2 provided with the substantially U-shaped cross section is provided with a plurality of bolt insertion holes 8b at intervals in the up and down direction and the width direction (left and right direction) and attached to the abdomen. This is a combined steel sheet pile 1 for a retaining type retaining wall as a portion 8a. In the combined steel sheet pile 1 for the retaining-type retaining wall as described above, a step portion is formed by the level difference between the upper end surfaces of the steel sheet pile 2 having a substantially U-shaped section and the section steel 6 having a generally H-shaped section. If the raised member 15 can be arranged in such a step space, the raised member 15 does not protrude in the lateral direction perpendicular to the retaining wall surface, so that it fits well, and the upper end of the combined steel sheet pile is Coping such as reinforced concrete to be coated (see FIG. 12) can be made smaller than the case shown in FIG.

なお、図18、図21および図22に示すように、本発明の控え式土留め壁用組合せ鋼矢板1では、H形鋼からなる断面略H字状の形鋼6のフランジ6aが、断面略U字状部を備えた鋼矢板2における溝側のフランジ7外面に、部材長手方向に重合するように配置されてその側縁部が連続または断続した溶接により固定された、断面略T字状の組み合わせ鋼矢板9の形態で、断面略U字状部を備えた鋼矢板2と断面略H字状の形鋼6との上端部のレベルに、前記のようなレベル差を設けると共に、高レベル位置とされた側の部材に、腹起し材取付部を設けるようにしてもよい。   As shown in FIGS. 18, 21, and 22, in the combined steel sheet pile 1 for a retaining wall retaining wall according to the present invention, the flange 6 a of the section steel 6 having a substantially H-shaped section made of H-section has a sectional shape. A substantially T-shaped cross section, which is arranged on the outer surface of the groove-side flange 7 of the steel sheet pile 2 having a substantially U-shaped portion so as to overlap in the longitudinal direction of the member and is fixed by continuous or intermittent welding. In the form of a combined steel sheet pile 9 in the shape, the level difference as described above is provided at the level of the upper end of the steel sheet pile 2 having a substantially U-shaped section and the section steel 6 having a substantially H-shaped section, You may make it provide a stomach raising material attaching part in the member by the side made into the high level position.

実施形態1では、1枚の熱間圧延された断面略U字状部を備えた鋼矢板2と断面略H字状の形鋼6を使用した形態の控え式土留め壁用組合せ鋼矢板1を示したが、1枚の熱間圧延された断面略U字状部を備えた鋼矢板2の代わりに冷間成形された断面略U字状部を備えた鋼矢板2を使用してもよいし、図19に示すように、2枚1組のZ形鋼矢板11を嵌合させて断面略U字状部を備えた鋼矢板2を備えた控え式土留め壁用組合せ鋼矢板1としてもよいし、H形形状の形鋼の代わりに、断面I形などのH形に類似したH形状の形鋼としてもよい。また、断面略U字状部を備えた鋼矢板2と断面略H字状の形鋼6とを組み合わせて一体化した控え式土留め壁用組合せ鋼矢板1を構成する場合に、断面略U字状部を備えた鋼矢板2のフランジ7と、断面略H字状の形鋼6のフランジ6aとを溶接により固着してもよく、断面略U字状部を備えた鋼矢板2のフランジ7と断面略H字状の形鋼6のフランジ6aにボルト挿通孔を予め設けてボルトにより固着するようにしてもよい。   In the first embodiment, the steel sheet pile 2 having a substantially U-shaped section that is hot rolled and the section steel 6 having a substantially H-shaped section are used, and the combined steel sheet pile 1 for a retaining wall retaining wall is used. Although the steel sheet pile 2 provided with the substantially U-shaped cross section formed by cold forming is used instead of the steel sheet pile 2 including the substantially U-shaped cross section subjected to hot rolling. As shown in FIG. 19, a combined steel sheet pile 1 for a retaining wall with a steel sheet pile 2 fitted with a set of two Z-shaped steel sheet piles 11 and having a substantially U-shaped section. Alternatively, instead of the H-shaped shape steel, an H-shaped shape steel similar to the H shape such as an I-shaped cross section may be used. When the steel sheet pile 2 having a substantially U-shaped section and the section steel 6 having a substantially H-shaped section are combined and integrated, the combined steel sheet pile 1 for a retaining wall retaining wall 1 is configured. The flange 7 of the steel sheet pile 2 provided with the letter-shaped part and the flange 6a of the shaped steel 6 having a substantially H-shaped section may be fixed by welding, and the flange of the steel sheet pile 2 provided with the substantially U-shaped part in section. 7 and a flange 6a of a section steel 6 having a substantially H-shaped cross section may be provided with bolt insertion holes in advance and fixed with bolts.

さらに、図3および図4に示す使用形態を参照しながら、図1,2に示す形態の控え式土留め壁用組合せ鋼矢板1およびそれを使用した控え式土留め壁18について説明する。   Further, with reference to the usage patterns shown in FIGS. 3 and 4, the combined steel sheet pile 1 for the reserved retaining wall in the form shown in FIGS. 1 and 2 and the reserved retaining wall 18 using the same.

図1〜図4に示す実施形態においては、断面略H字状の形鋼6の頭部の位置(上端レベル)より、腹起し材15の取付高さ分以上、断面略U字状部を備えた鋼矢板2の頭部の位置(上端レベルの位置)を高くしている。
実際の土留め壁構造物では、高さ125mm、幅65mmの溝形鋼16を2枚腹起し材15に用い、定着部直径が30mm程度のアンカー材17が最小断面と想定されるので、余裕代を考慮しなければ、160mm以上、断面略U字状部を備えた鋼矢板2の頭部の位置(上端レベルの位置)を高くすればよい。
例えば、腹起し材15に、高さ200mm、幅90mmの溝形鋼を2枚一組使用し、定着部直径80mmのアンカー材を使用する場合は、断面略U字状部を備えた鋼矢板2の上端レベルの位置は、溝形鋼の2枚分の幅にアンカー材の直径を加えた260mmに余裕代を加えた値以上、断面略H字状の形鋼6の頭部の位置(上端レベルの位置)より高くすればよい。
例えば、鋼矢板の打設時の高さ管理基準を設計高さ±100mm、アンカー材取付孔取り付け誤差許容値を設計高さ±20mmとすれば、余裕代は240mmとなるので、断面略U字状部を備えた鋼矢板2も上端レベルと断面略H字状の形鋼6の上端レベルを500mm程度、高さを変えればよい。
In the embodiment shown in FIG. 1 to FIG. 4, the section substantially U-shaped from the position (upper end level) of the head portion of the section steel 6 having a substantially H-shaped section to a height equal to or higher than the mounting height of the erection material 15. The position of the head (the position of the upper end level) of the steel sheet pile 2 provided with is increased.
In an actual earth retaining wall structure, since the grooved steel 16 having a height of 125 mm and a width of 65 mm is used as the flared material 15 and the anchor material 17 having a fixing portion diameter of about 30 mm is assumed to be the minimum cross section, If the allowance is not taken into consideration, the position of the head (the position of the upper end level) of the steel sheet pile 2 having a substantially U-shaped section of 160 mm or more may be increased.
For example, when two sets of grooved steels having a height of 200 mm and a width of 90 mm are used for the erection material 15 and an anchor material having a fixing portion diameter of 80 mm is used, the steel having a substantially U-shaped section. The position of the upper end level of the sheet pile 2 is equal to or more than the value obtained by adding a margin to 260 mm obtained by adding the diameter of the anchor material to the width of two pieces of the grooved steel, and the position of the head of the section steel 6 having a substantially H-shaped cross section. What is necessary is just to make it higher than (the position of an upper end level).
For example, if the height management standard at the time of placing the steel sheet pile is the design height ± 100 mm and the anchor material mounting hole mounting error tolerance is the design height ± 20 mm, the margin is 240 mm. The steel sheet pile 2 provided with the shape portion may be changed in height by changing the upper end level and the upper end level of the section steel 6 having a substantially H-shaped section by about 500 mm.

図3および図4に、実施形態1の控え式土留め壁用組合せ鋼矢板1を使用した控え式土留め壁18が示されている。この形態では、腹起し材15を断面略U字状部を備えた鋼矢板2の背面のフランジ7にボルト19で固定し、タイロッド等のアンカー材17を断面略U字状部を備えた鋼矢板2と腹起し材15の間において、腹起し材15にナット等の定着金具により定着する実施形態である。   3 and FIG. 4 show a reserved retaining wall 18 using the combined steel sheet pile 1 for a reserved retaining wall of the first embodiment. In this embodiment, the flank material 15 is fixed to the flange 7 on the back surface of the steel sheet pile 2 having a substantially U-shaped section with a bolt 19, and the anchor material 17 such as a tie rod is provided with a substantially U-shaped section. In this embodiment, the steel sheet pile 2 and the erection material 15 are fixed to the erection material 15 by a fixing bracket such as a nut.

前記の形態において、腹起し材15の固定は、ボルトに代えて、現場溶接で断面略U字状部を備えた鋼矢板2のフランジ7に固着してもかまわない。このように固定すれば、断面略U字状部を備えた鋼矢板2と断面略H字状の形鋼6とが、上部で重なるように干渉しない組合せ鋼矢板部が提供できるので、アンカー材17は、控え式土留め壁用組合せ鋼矢板1に現場貫通孔を設けずに固定できる。   In the above-described embodiment, the erection material 15 may be fixed to the flange 7 of the steel sheet pile 2 having a substantially U-shaped cross section by field welding instead of the bolt. If fixed in this way, a steel sheet pile 2 having a substantially U-shaped section and a section steel 6 having a substantially H-shaped section can be provided with a combined steel sheet pile section that does not interfere so as to overlap at the upper part. No. 17 can be fixed to the combined steel sheet pile 1 for a retaining wall retaining wall without providing an on-site through hole.

図5および図6に、図1および図2に示す形態の控え式土留め壁用組合せ鋼矢板1を使用し、腹起し材15を断面略U字状部を備えた鋼矢板2の背面にボルト19で固定し、アンカー材17を断面略U字状部を備えた鋼矢板2の前面側に定着する控え式土留め壁18の実施形態が示されている。腹起し材15の断面略U字状部を備えた鋼矢板2に対する固定手段は、現場溶接でもかまわない。このように固定すれば、断面略U字状部を備えた鋼矢板2と断面略H字状の形鋼6との上端部が重なるように干渉しない組合せ鋼矢板部が提供できるので、アンカー材17の貫通孔を断面略U字状部を備えた鋼矢板2に設ける必要はあるものの、断面略H字状の形鋼6に同時にアンカー貫通孔を空ける必要がなくなるので、現場作業が大幅に軽減できる。なお、図1,2と同様な要素の部分には、同様な符号を付して説明を省略し、以下の他の実施形態も同様である。   5 and 6, the steel sheet pile 2 having a substantially U-shaped cross-section is used for the bell-raised material 15, using the combined steel sheet pile 1 for the retaining retaining wall in the form shown in FIGS. 1 and 2. An embodiment of the retaining earth retaining wall 18 is shown in which the anchor member 17 is fixed to the front side of the steel sheet pile 2 having a substantially U-shaped section by fixing with the bolt 19. The fixing means for the steel sheet pile 2 having the substantially U-shaped cross section of the erection material 15 may be field welding. If it fixes in this way, since the combined steel sheet pile part which does not interfere so that the upper end part of the steel sheet pile 2 provided with the cross-sectional substantially U-shaped part and the cross-section substantially H-shaped shape steel 6 can provide can be provided, anchor material Although it is necessary to provide 17 through-holes in the steel sheet pile 2 having a substantially U-shaped section, it is not necessary to make an anchor through-hole at the same time in the section steel 6 having a substantially H-shaped section. Can be reduced. Elements similar to those in FIGS. 1 and 2 are denoted by the same reference numerals and description thereof is omitted, and the other embodiments below are also the same.

図5および図6では、腹起し材15を断面略U字状部を備えた鋼矢板2の背面にボルト19で固定し、アンカー材17を断面略U字状部を備えた鋼矢板2の前面側に定着する実施形態を示したが、その変形形態として腹起し材15を断面略U字状部を備えた鋼矢板2の前面にボルトで固定し、アンカー材17を断面略U字状部を備えた鋼矢板2の前面側に定着することもできる。この場合も、断面略U字状部を備えた鋼矢板2と断面略H字状の形鋼6との上端部が重なるように干渉しない組合せ鋼矢板部が提供できるので、アンカー材17の貫通孔を組み合わせ鋼矢板に空ける必要はあるものの、断面略H字状の形鋼6に同時にアンカー貫通孔を空ける必要がなくなるので、現場作業が大幅に軽減できる。   In FIG. 5 and FIG. 6, the erection material 15 is fixed to the back surface of the steel sheet pile 2 having a substantially U-shaped section with a bolt 19, and the anchor material 17 is a steel sheet pile 2 having a generally U-shaped section. However, as a modification of the embodiment, the angling material 15 is fixed to the front surface of the steel sheet pile 2 having a substantially U-shaped section with a bolt, and the anchor material 17 is approximately U-shaped. It can also be fixed on the front side of the steel sheet pile 2 provided with a character-shaped portion. Also in this case, since the combined steel sheet pile part which does not interfere so that the upper end part of the steel sheet pile 2 provided with the substantially U-shaped section and the section steel 6 having the substantially H-shaped section overlaps can be provided, the penetration of the anchor material 17 can be provided. Although it is necessary to make holes in the steel sheet pile by combining holes, it is not necessary to simultaneously make anchor through holes in the section steel 6 having a substantially H-shaped cross section.

図7および図8には、本発明の控え式土留め壁用組合せ鋼矢板1の他の形態が示されている。図7は側面図であり、図8はその平面図である。この形態は、断面略U字状部を備えた鋼矢板2と断面略H字状の形鋼6とにより、断面略Y字形状の組み合わせ鋼矢板1Aに固着し成形した組み合わせ鋼矢板において、断面略H字状の形鋼6の頭部の位置(上端レベル位置)を、断面略U字状部を備えた鋼矢板2の頭部の位置(上端レベル位置)より高く配置した控え式土留め壁用組合せ鋼矢板1の形態である。
この形態では、1枚の熱間圧延された断面略U字状部を備えた鋼矢板2と断面略H字状の形鋼6を使用した形態を示したが、前記実施形態と同様に、1枚の熱間圧延された断面略U字状部を備えた鋼矢板2の替わりに、冷間成形された断面略U字状部を備えた鋼矢板2を使用してもよいし、2枚1組のZ形鋼矢板11を嵌合させた断面略U字状部を備えた鋼矢板2でもよく、断面略H字状の形鋼6の代わりに断面I字状などの断面H字状に類似した断面H字状の形鋼でもよい。
7 and 8 show another embodiment of the combined steel sheet pile 1 for a reserved retaining wall according to the present invention. FIG. 7 is a side view, and FIG. 8 is a plan view thereof. This form is a combination steel sheet pile fixed and formed on a combined steel sheet pile 1A having a substantially Y-shaped section by a steel sheet pile 2 having a substantially U-shaped section and a section steel 6 having a substantially H-shaped section. Reservoir type earth retaining plate in which the position of the head (upper end level position) of the substantially H-shaped section 6 is arranged higher than the position of the head (upper end level position) of the steel sheet pile 2 having a substantially U-shaped section. It is the form of the combination steel sheet pile 1 for walls.
In this form, although the form which used the steel sheet pile 2 with the cross-sectional substantially U-shaped part and the cross-section substantially H-shaped shape steel 6 which showed the sheet | seat of 1 hot rolling was shown, like the said embodiment, Instead of the steel sheet pile 2 having the substantially U-shaped section that has been hot rolled, a steel sheet pile 2 having a substantially U-shaped section that has been cold-formed may be used. A steel sheet pile 2 having a substantially U-shaped section in which a set of Z-shaped steel sheet piles 11 is fitted may be used. Instead of a section steel 6 having a substantially H-shaped section, a cross-sectional H shape such as an I-shaped section. It may be a section steel having a H-shaped cross section similar to the shape.

図7,8に示す形態では、断面略U字状部を備えた鋼矢板2と、断面略H字状の形鋼6とを使用し、形鋼6のフランジ6aを断面略U字状部を備えた鋼矢板2のフランジ7に当接して、形鋼6のフランジ6a側縁部を、部材長手方向に連続または断続溶接により固着させている形態を示したが、形鋼6のフランジ6aと、鋼矢板2のフランジ7とに、ボルト挿通孔を設けて、ボルトを使用して両者を固着してもよい。   7 and 8, a steel sheet pile 2 having a substantially U-shaped section and a section steel 6 having a substantially H-shaped section are used, and the flange 6a of the section steel 6 is formed to have a substantially U-shaped section. In this embodiment, the flange 6a side edge of the shape steel 6 is fixed to the longitudinal direction of the member by continuous or intermittent welding. And the bolt insertion hole may be provided in the flange 7 of the steel sheet pile 2, and both may be fixed using a bolt.

図7に示す実施形態においては、断面略H字状の形鋼6の頭部の位置(上端レベル位置)を、断面略U字状部を備えた鋼矢板2の頭部の位置(上端レベル位置)より、腹起し材15の取付高さ分に余裕代を加えた分以上高くしている。   In the embodiment shown in FIG. 7, the position of the head (upper level position) of the section steel 6 having a substantially H-shaped cross section is the position of the head of the steel sheet pile 2 having a substantially U-shaped section (upper level). The position is set higher than the height of the erection material 15 attached by a margin.

断面略Y字形状の組み合わせ鋼矢板あるいは断面略T字状の組み合わせ鋼矢板のいずれの形態の控え式土留め壁用組合せ鋼矢板1においても、断面略U字状部を備えた鋼矢板2と断面略H字状の形鋼6とを溶接により一体化する替わりに、これらのフランジ相互をボルトを使用して固着させてもよい。   The steel sheet pile 2 provided with a substantially U-shaped section in the combined steel sheet pile 1 for a retaining wall retaining wall in any form of a combined steel sheet pile having a substantially Y-shaped cross section or a combined steel sheet pile having a substantially T-shaped cross section, Instead of integrating the section steel 6 having a substantially H-shaped cross section by welding, these flanges may be fixed to each other using bolts.

図9および図10には、腹起し材15を断面略H字状の形鋼6の前面側に、現場溶接で固定した実施形態が示されている。腹起し材15の固定は、現場溶接に代えて、断面略H字状の形鋼6の前面側にボルトで固定してもかまわない。このように固定すれば、断面略U字状部を備えた鋼矢板2と断面略H字状の形鋼6との上端部が重なるように干渉しない組合せ鋼矢板部が提供できるので、アンカー材17は、控え式土留め壁用組合せ鋼矢板に現場貫通孔を設けずに固定できる。   FIGS. 9 and 10 show an embodiment in which the flared material 15 is fixed to the front side of the section steel 6 having a substantially H-shaped cross section by field welding. The erection material 15 may be fixed by bolts on the front side of the section steel 6 having a substantially H-shaped cross section, instead of on-site welding. If it fixes in this way, since the combined steel sheet pile part which does not interfere so that the upper end part of the steel sheet pile 2 provided with the cross-sectional substantially U-shaped part and the cross-section substantially H-shaped shape steel 6 can provide can be provided, anchor material 17 can be fixed to the combined steel sheet pile for the retaining wall retaining wall without providing a through-hole.

図19に示す断面略Y字形状の組み合わせ鋼矢板1Aでは、Z形鋼矢板11を組み合わせた断面略U字状部を備えた鋼矢板2の溝外側のフランジ7の外面は平坦面であるので、H形鋼6のフランジ6aを当接配置して、溶接等により固定することができる。   In the combined steel sheet pile 1A having a substantially Y-shaped cross section shown in FIG. 19, the outer surface of the flange 7 on the outer side of the groove of the steel sheet pile 2 provided with the substantially U-shaped cross section combined with the Z-shaped steel sheet pile 11 is a flat surface. The flange 6a of the H-shaped steel 6 can be disposed in contact with the flange 6a and fixed by welding or the like.

なお、Z形鋼矢板11の嵌合された継手相互は、部材長手方向に間隔をおいて、多数箇所でかしめ固定することにより、Z形鋼矢板相互は一体化される。   Note that the joints fitted with the Z-shaped steel sheet piles 11 are caulked and fixed at a number of locations at intervals in the longitudinal direction of the member, thereby integrating the Z-shaped steel sheet piles.

図20に示すように、Z形鋼矢板11相互を組み合わせて構成した断面略U字状部を備えた鋼矢板2における溝内側に、形鋼としてのH形鋼6を設置する形態では、継手14が突出して、H形鋼6のフランジ6aと干渉するため、鋼製調整板20を個々のZ形鋼矢板11のフランジ7に固着して、その鋼製調整板20に対して、H形鋼6を溶接等により固定するようにすれば、控え式土留め壁用組合せ鋼矢板1とすることができる。
なお、図示を省略するが、断面略T字状の組み合わせ鋼矢板9あるいは断面略Y字形状の組み合わせ鋼矢板1Aとしては、アーム部3,4を備えていない形態の鋼矢板であって、断面略U字状部を備えた鋼矢板としてもよい。
As shown in FIG. 20, in the form in which the H-shaped steel 6 as the shaped steel is installed inside the groove in the steel sheet pile 2 having the substantially U-shaped section formed by combining the Z-shaped steel sheet piles 11 with each other, 14 protrudes and interferes with the flange 6 a of the H-shaped steel 6. Therefore, the steel adjusting plate 20 is fixed to the flange 7 of each Z-shaped steel sheet pile 11, and the H-shaped adjusting plate 20 is If the steel 6 is fixed by welding or the like, the combined steel sheet pile 1 for a retaining wall can be obtained.
In addition, although illustration is abbreviate | omitted, it is a steel sheet pile of the form which is not equipped with the arm parts 3 and 4 as 1A of combined steel sheet piles 9A of a cross-section substantially T shape, or the cross-section substantially Y shape, It is good also as a steel sheet pile provided with the substantially U-shaped part.

前記実施形態を実施する場合、控え工21と連結されるアンカー材17としては、両端部に雄ねじ部を有する鋼製タイロッド以外にも、両端部に雄ねじ部を備えた鋼製撚り線材を使用するようにしてもよい。   When implementing the said embodiment, as the anchor material 17 connected with the laying work 21, in addition to the steel tie rod which has an external thread part in both ends, the steel strand wire provided with the external thread part in both ends is used. You may do it.

前記各実施形態の控え式土留め壁用組合せ鋼矢板1は、上部の構造を変えずに下部の長さを適宜の長さ寸法短くして控え工用組合せ鋼矢板に使用することができるので、図23〜図25に示す代表形態を参照しながら説明する。   Since the combined steel sheet pile 1 for the retaining-type retaining wall according to each of the above embodiments can be used for the combined steel sheet pile for the temporary work by reducing the length of the lower part without changing the structure of the upper part. Description will be made with reference to the representative forms shown in FIGS.

図23〜図25は、図1および図2に示す控え式土留め壁用組合せ鋼矢板1の下部の長さを短くして、控え工用組み合わせ鋼矢板24とした組み合わせ鋼矢板を使用し、そのような控え工用組み合わせ鋼矢板24の継手板相互を噛み合わせて地盤に打設して控え工21Aを構築するようにした形態である。   23-25 uses the combined steel sheet pile which shortened the length of the lower part of the combined steel sheet pile 1 for a retaining-type retaining wall shown in FIG. 1 and FIG. This is a form in which the joint plate of the combination steel sheet piles 24 for the keeper is engaged with each other and placed on the ground to construct the keeper 21A.

図24および図25に、実施形態の控え工用組合せ鋼矢板24を使用した控え工21が拡大して示されている。このような控え工用組み合わせ鋼矢板24を使用して控え工21を構築する場合には、控え工用組合せ鋼矢板24を地盤に打設すると共に継ぎ手相互を噛み合わされて、控え工用壁体25を構築し、腹越し材配置用段部8に腹起し材15が配置されて、上端レベルが高くされた前記他方の部材の上端部に設けた腹起し材取り付け部8に、腹越し材15が取り付けられ、その腹越し材15にアンカー材17を介して土留め壁18が連結される。   FIGS. 24 and 25 show an enlarged view of the keeper 21 using the combination steel sheet pile 24 for the keeper according to the embodiment. When constructing the construction 21 using the combined steel sheet pile 24 for the construction work, the construction steel body sheet pile 24 is placed on the ground and the joints are engaged with each other. 25, the belly raising material 15 is arranged on the stepping material arranging step 8, and the belly raising material mounting portion 8 provided at the upper end of the other member whose upper end level is increased An overburden material 15 is attached, and an earth retaining wall 18 is connected to the overburden material 15 via an anchor material 17.

この形態では、図3および図4に示す形態と同様に、腹起し材15を断面略U字状部を備えた鋼矢板2の背面のフランジ7にボルト19で固定し、タイロッド等のアンカー材17を断面略U字状部を備えた鋼矢板2と腹起し材15の間において、腹起し材15にナット等の定着金具により定着する実施形態である。控え工用組み合わせ鋼矢板24と腹起し材15とタイロッド等のアンカー材17との取付あるいは連結構造は同じであるので、同様な符号を付した。なお、図示は省略するが、控え工用組み合わせ鋼矢板24を、継手を嵌合させず地盤に打設し、H鋼杭や鋼管杭のように控え杭として控え工21Aを構築することもできる。   In this embodiment, similarly to the embodiment shown in FIGS. 3 and 4, the flank member 15 is fixed to the flange 7 on the back surface of the steel sheet pile 2 having a substantially U-shaped section with a bolt 19, and an anchor such as a tie rod is used. This is an embodiment in which the material 17 is fixed to the erection material 15 by a fixing metal fitting such as a nut between the steel sheet pile 2 having a substantially U-shaped section and the erection material 15. Since the attachment or connection structure of the combined steel sheet pile 24, the erection material 15 and the anchor material 17 such as a tie rod is the same, the same reference numerals are given. In addition, although illustration is abbreviate | omitted, 21 A of construction works can also be constructed | assembled by placing the combination steel sheet pile 24 for construction works on a ground without fitting a joint, and using it as a construction pile like a H steel pile or a steel pipe pile. .

このような控え工21Aとすると、前記実施形態と同様に、組合せ鋼矢板に対する現場作業を少なくし現場作業費を低減可能な控え工用鋼矢板および控え工になる。   When such a laying work 21A is used, as in the above-described embodiment, the laying steel sheet pile and the laying work for the laying work that can reduce the field work for the combined steel sheet piles and reduce the work cost of the field work.

なお、控え工21Aの上部構造は、必要に応じ、コンクリート等の被覆材により適宜被覆されて、埋め戻し土26が投入されて埋め込まれる。   Note that the upper structure of the laying work 21A is appropriately covered with a covering material such as concrete as needed, and backfill soil 26 is introduced and embedded.

土留め壁用組み合わせ鋼矢板と同様に、控え工用組合せ鋼矢板24は、断面略U字状部を備えた鋼矢板の溝側またはその溝側と反対側のフランジ外面に断面略H字状の形鋼を固着した断面略T字状または断面略Y字状の組み合わせ鋼矢板において、その組み合わせ鋼矢板を構成する断面略U字状部を備えた鋼矢板と、断面略H字状の形鋼のいずれか一方の部材の上端レベルを低く、他方の部材の上端レベルを高くして、腹越し材配置用段部8を設け、かつ上端レベルが高くされた前記他方の部材の上端部に、アンカー材17を介して土留め壁18に連結される腹起し材15を取り付けるための腹起し材取り付け部8aが設けられている。   Similar to the combination steel sheet pile for retaining wall, the combination steel sheet pile 24 for the preparatory work is substantially H-shaped in cross section on the groove side of the steel sheet pile having a substantially U-shaped section or on the flange outer surface opposite to the groove side. In a combined steel sheet pile having a substantially T-shaped cross section or a substantially Y-shaped cross section to which the shape steel is fixed, a steel sheet pile having a substantially U-shaped cross section constituting the combined steel sheet pile, and a substantially H-shaped cross section The upper end level of either one of the steel members is lowered, the upper end level of the other member is increased, an abdominal material placement step 8 is provided, and the upper end portion of the other member is increased in the upper end level. In addition, an angling member attaching portion 8a for attaching the erection material 15 connected to the earth retaining wall 18 via the anchor material 17 is provided.

また、図23〜図25に示す代表形態以外にも、図5以降の形態も前記と同様に適用するようにすることができる。   In addition to the representative forms shown in FIGS. 23 to 25, the forms after FIG. 5 can be applied in the same manner as described above.

本発明の一実施形態の組合せ鋼矢板およびその組合せ鋼矢板相互を連結した状態を示す平面図である。It is a top view which shows the state which connected the combination steel sheet pile of one Embodiment of this invention, and its combination steel sheet pile. 本発明の組合せ鋼矢板の側面図である。It is a side view of the combination steel sheet pile of this invention. 図2に示す状態から、腹起し材を取り付けると共に腹起し材にアンカー材を取り付けた状態を示す一部縦断側面図である。It is a partially vertical side view which shows the state which attached the anchor material to the stomach raising material while attaching the stomach raising material from the state shown in FIG. 図3の平面図である。FIG. 4 is a plan view of FIG. 3. 図2に示す状態から、腹起し材を取り付けると共に矢板にアンカー材を取り付けた状態を示す一部縦断側面図である。It is a partially longitudinal side view which shows the state which attached the anchor material to the sheet pile while attaching the raising member from the state shown in FIG. 図5の平面図である。FIG. 6 is a plan view of FIG. 5. 本発明の他の実施形態の組合せ鋼矢板およびその組合せ鋼矢板相互を連結した状態を示す側面図である。It is a side view which shows the state which connected the combination steel sheet pile of other embodiment of this invention, and its combination steel sheet pile. 図7に示す組合せ鋼矢板およびその組合せ鋼矢板相互を連結した状態を示す平面図である。It is a top view which shows the state which connected the combination steel sheet pile shown in FIG. 7, and its combination steel sheet pile. 図7に示す状態から、腹起し材を取り付けると共に腹起し材にアンカー材を取り付けた状態を示す一部縦断側面図である。It is a partially longitudinal side view which shows the state which attached the anchor material to the belly raising material while attaching the belly raising material from the state shown in FIG. 図9の平面図である。FIG. 10 is a plan view of FIG. 9. 鋼矢板壁に対するアンカー材の取付位置との関係を示す平面図である。It is a top view which shows the relationship with the attachment position of the anchor material with respect to a steel sheet pile wall. 鋼矢板頭部とアンカーの取付位置との関係を示す一部縦断側面図である。It is a partial vertical side view which shows the relationship between the steel sheet pile head and the attachment position of an anchor. 腹起し材を示すものであって、(a)は平面図、(b)は正面図、(c)は添板のない部分の縦断側面図、(d)は添板のある部分の縦断側面図である。Fig. 2 shows an angling material, (a) is a plan view, (b) is a front view, (c) is a longitudinal side view of a portion without a backing plate, and (d) is a longitudinal section of a portion with a backing plate. It is a side view. 従来の組み合わせ鋼矢板の一例を示す横断平面図である。It is a cross-sectional top view which shows an example of the conventional combination steel sheet pile. 従来の組み合わせ鋼矢板の他の例を示す横断平面図である。It is a cross-sectional top view which shows the other example of the conventional combination steel sheet pile. 控え式土留め壁の一例を示す一部縦断側面図である。It is a partially vertical side view which shows an example of a reservation-type earth retaining wall. 控え式土留め壁の他の例を示す一部縦断側面図である。It is a partially vertical side view which shows the other example of a reservation-type earth retaining wall. 断面略T字状の組み合わせ鋼矢板の形態の控え式土留め壁用組合せ鋼矢板を示す平面図である。It is a top view which shows the combination type steel sheet pile for reservation type retaining walls of the form of the combined steel sheet pile of a cross-sectional substantially T shape. Z形鋼矢板を組み合わせた断面略U字状部を備えた鋼矢板と、断面略H字状の形鋼を備えた断面略Y字形状の組み合わせ鋼矢板形態の控え式土留め壁用組合せ鋼矢板を示す平面図である。Steel sheet pile with a substantially U-shaped section combined with a Z-shaped steel sheet pile, and a combined steel sheet for a retaining retaining wall in the form of a combined steel sheet pile with a substantially Y-shaped section with a substantially H-shaped section steel It is a top view which shows a sheet pile. Z形鋼矢板を組み合わせた断面略U字状部を備えた鋼矢板と、断面略H字状の形鋼を備えた断面略T字形状の組み合わせ鋼矢板形態の控え式土留め壁用組合せ鋼矢板を示す平面図である。Steel sheet pile with a substantially U-shaped section with a Z-shaped steel sheet pile combined with a steel sheet pile with a substantially T-shaped cross section with a substantially H-shaped section steel combined steel for a retaining type retaining wall It is a top view which shows a sheet pile. 図18に示す組合せ鋼矢板で、断面略U字状部を備えた鋼矢板の上端レベルを断面略H字状の形鋼の上端レベルよりも高くして腹起し材用取付部を設けた場合の側面図である。In the combined steel sheet pile shown in FIG. 18, the upper end level of the steel sheet pile provided with the substantially U-shaped section is made higher than the upper end level of the section steel having the substantially H-shaped section, and the attachment portion for the erection material is provided. FIG. 図18に示す組合せ鋼矢板で、断面略H字状の形鋼の上端レベルを断面略U字状部を備えた鋼矢板の上端レベルよりも高くして腹起し材用取付部を設けた場合の側面図である。In the combined steel sheet pile shown in FIG. 18, the upper end level of the shape steel having a substantially H-shaped cross section is made higher than the upper end level of the steel sheet pile having a substantially U-shaped cross section, and a mounting member for the erection material is provided. FIG. 本発明の控え工用組み合わせ鋼矢板を使用した控え工の一形態を示す一部縦断側面図である。It is a partial longitudinal cross-sectional side view which shows one form of the preparatory work using the combined steel sheet pile for preparatory works of this invention. 図23における控え工の上部付近を拡大して示す一部縦断側面図である。FIG. 24 is a partially longitudinal side view showing, in an enlarged manner, the vicinity of the upper portion of the laying work in FIG. 23. 図24における控え工付近の平面図である。FIG. 25 is a plan view of the vicinity of the temporary work in FIG. 24.

符号の説明Explanation of symbols

1 控え式土留め壁用組合せ鋼矢板
1A 断面略Y字形状の組み合わせ鋼矢板
2 ハット形鋼矢板(断面略U字状部を備えた鋼矢板)
3 ハット形鋼矢板のアーム部
4 ハット形鋼矢板のアーム部
5 ハット形鋼矢板のウェブ
6 H形鋼(断面略H字状の形鋼)
6a H形鋼の一方のフランジ
6b H形鋼の他方のフランジ
6c H形鋼のウェブ
7 ハット形鋼矢板のフランジ
8 腹越し材配置用段部
8a 腹起し材取り付け部
8b ボルト挿通孔
9 断面略T字状の組み合わせ鋼矢板
11 Z形鋼矢板
12a 溝
12b 溝
13 係止爪部
14 継手
15 腹起し材
16 溝形鋼
17 アンカー材
18 土留め壁
19 ボルト
20 鋼製調整板
21 控え工
21A 控え工
21a 鋼矢板
21b 鋼管杭
22 コーピング
23 添え板
24 控え工用組み合わせ鋼矢板
25 控え工用壁体
26 埋め戻し土
27 冷間成形された断面略U字状部を備えた鋼矢板
28 断面略Y字状に固着し成形した組み合わせ鋼矢板
DESCRIPTION OF SYMBOLS 1 Combined steel sheet pile for retaining wall retaining wall 1A Combined steel sheet pile with a substantially Y-shaped cross section 2 Hat-shaped steel sheet pile (steel sheet pile with a substantially U-shaped section)
3 Arm part of hat-shaped steel sheet pile 4 Arm part of hat-shaped steel sheet pile 5 Web of hat-shaped steel sheet pile 6 H-shaped steel (section steel having a substantially H-shaped cross section)
6a H-shaped steel flange 6b H-shaped steel flange 6c H-shaped steel web 7 Hat-shaped steel sheet pile flange 8 Umbrella material placement step 8a Raised material mounting part 8b Bolt insertion hole 9 Cross section Combined steel sheet pile 11 having a substantially T shape Z-shaped steel sheet pile 12a Groove 12b Groove 13 Locking claw portion 14 Joint 15 Raised material 16 Groove steel 17 Anchor material 18 Earth retaining wall 19 Bolt 20 Steel adjusting plate 21 Preliminary work 21A Reservoir 21a Steel sheet pile 21b Steel pipe pile 22 Coping 23 Saddle plate 24 Combined steel sheet pile 25 for preparatory work Wall 26 for back construction 27 Backfill soil 27 Steel sheet pile 28 having a substantially U-shaped section formed by cold forming Combined steel sheet pile fixed and molded in a substantially Y shape

Claims (6)

断面略U字状部を備えた鋼矢板の溝側またはその溝側と反対側のフランジ外面に断面略H字状の形鋼を固着した断面略T字状または断面略Y字状の組み合わせ鋼矢板において、その組み合わせ鋼矢板を構成する断面略U字状部を備えた鋼矢板と、断面略H字状の形鋼のいずれか一方の部材の上端レベルを低く、他方の部材の上端レベルを高くして、腹越し材配置用段部を設け、かつ上端レベルが高くされた前記他方の部材の上端部に、アンカー材を介して控え工に連結される腹起し材を取り付けるための腹起し材取り付け部が設けられていることを特徴とする控え式土留め壁用組合せ鋼矢板。   Combined steel with a substantially T-shaped section or a substantially Y-shaped section in which a steel sheet with a substantially U-shaped section is secured to a groove side of a steel sheet pile or a flange outer surface opposite to the groove side. In the sheet pile, the upper end level of either one of the steel sheet pile with the substantially U-shaped section and the substantially H-shaped section steel constituting the combined steel sheet pile is lowered, and the upper end level of the other member is reduced. An abdomen for attaching an abdominal material that is connected to a lower construction via an anchor material to the upper end portion of the other member that has a higher upper end level and has a higher upper end level. A combined steel sheet pile for a reserving retaining wall, wherein a raised material attaching portion is provided. 鋼矢板頭部において、断面略U字状部を備えた鋼矢板の上端レベルが、断面略H字状の形鋼の上端レベルより高くされていることを特徴とする請求項1の控え式土留め壁用組合せ鋼矢板。   The steel-type sheet pile head, wherein the upper end level of the steel sheet pile provided with the substantially U-shaped section is higher than the upper end level of the section steel having an approximately H-shaped section. Combination steel sheet pile for retaining walls. 鋼矢板頭部において、断面略H字状の形鋼の上端レベルを、断面略U字状部を備えた鋼矢板の上端レベルより高くされていることを特徴とする請求項1の控え式土留め壁用組合せ鋼矢板。   2. The storage-type soil according to claim 1, wherein an upper end level of the steel sheet pile having a substantially H-shaped section is set higher than an upper end level of the steel sheet pile having a substantially U-shaped section. Combination steel sheet pile for retaining walls. 断面略U字状部を備えた鋼矢板の溝側またはその溝側と反対側のフランジ外面に断面略H字状の形鋼を固着した断面略T字状または断面略Y字状の組み合わせ鋼矢板において、その組み合わせ鋼矢板を構成する断面略U字状部を備えた鋼矢板と、断面略H字状の形鋼のいずれか一方の部材の上端レベルを低く、他方の部材の上端レベルを高くして、腹越し材配置用段部を設け、かつ上端レベルが高くされた前記他方の部材の上端部に、アンカー材を介して土留め壁に連結される腹起し材を取り付けるための腹起し材取り付け部が設けられていることを特徴とする控え工用組合せ鋼矢板。   Combined steel with a substantially T-shaped section or a substantially Y-shaped section in which a steel sheet with a substantially U-shaped section is secured to a groove side of a steel sheet pile or a flange outer surface opposite to the groove side. In the sheet pile, the upper end level of either one of the steel sheet pile with the substantially U-shaped section and the substantially H-shaped section steel constituting the combined steel sheet pile is lowered, and the upper end level of the other member is reduced. For providing an abdominal material connected to the earth retaining wall via an anchor material at the upper end of the other member having a higher upper end level and having a higher upper end level. A combined steel sheet pile for a laying work, characterized in that an abdominal material attachment portion is provided. 請求項1に記載の控え式土留め壁用組合せ鋼矢板が地盤に打設されると共に継ぎ手相互が噛み合わされて土留め壁が構成され、腹越し材配置用段部に腹起し材が配置されて、上端レベルが高くされた前記他方の部材の上端部に設けた腹起し材取り付け部に、腹越し材が取り付けられ、その腹越し材にアンカー材を介して控え工が連結されていることを特徴とする控え式土留め壁。   The combined steel sheet pile for the retaining wall retaining wall according to claim 1 is placed on the ground and the joints are meshed with each other to form a retaining wall. The abdominal material is attached to the abdominal material attaching part provided at the upper end of the other member whose upper end level is increased, and the backer is connected to the abdominal material via an anchor material. A reserved earth retaining wall characterized by 請求項4に記載の控え工用組合せ鋼矢板が地盤に打設されて控え工用壁体が構成され、腹越し材配置用段部に腹起し材が配置されて、上端レベルが高くされた前記他方の部材の上端部に設けた腹起し材取り付け部に、腹越し材が取り付けられ、その腹越し材にアンカー材を介して土留め壁が連結されていることを特徴とする控え工。   The combination steel sheet pile for a laying work according to claim 4 is placed on the ground to form a laying wall for the laying work, the lining material is placed on the stepping material placing step, and the upper end level is increased. A bellows material is attached to the belly material attachment portion provided at the upper end of the other member, and a retaining wall is connected to the belly material via an anchor material. Engineering.
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