JP2021076000A - Joining structure of steel wall body and reinforced-concrete floor plate - Google Patents

Joining structure of steel wall body and reinforced-concrete floor plate Download PDF

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JP2021076000A
JP2021076000A JP2020171747A JP2020171747A JP2021076000A JP 2021076000 A JP2021076000 A JP 2021076000A JP 2020171747 A JP2020171747 A JP 2020171747A JP 2020171747 A JP2020171747 A JP 2020171747A JP 2021076000 A JP2021076000 A JP 2021076000A
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steel
base plate
joint
wall body
flange
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JP7156347B2 (en
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正嗣 道野
Masashi Michino
正嗣 道野
恩田　邦彦
Kunihiko Onda
邦彦 恩田
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JFE Steel Corp
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Abstract

To provide a joining structure of a steel wall body and a reinforced-concrete floor plate which enables joining with simple processing and has high bearing force, and can cope with a construction error.SOLUTION: A joining structure 1 of a steel wall body formed by connecting H-shaped steel 3 and a combined steel sheet pile 9 having a steel member 7 with a joint mounted on an outer surface of a flange 5 on one side or both sides of the H-shaped steel 3, and a reinforced-concrete floor plate 23 which is arranged on one side of the steel wall body and has a bent reinforcement 19 inside includes: a base plate reinforcement fixing part 21 in which a base plate 15 to straddle a web 13 of the H-shaped steel 3 is arranged on an outer surface of the steel member 7 with the joint, the base plate 15 is bolt-joined to the flange 5 so as to sandwich the web 13 by bolt rows 17 in at least one row, and the bent reinforcement 19 of the reinforced-concrete floor plate 23 is fixed to the base plate 15 between the bolt rows 17.SELECTED DRAWING: Figure 1

Description

本発明は鋼製壁体と鉄筋コンクリート床版（ＲＣ床版）の接合構造に関するものである。 The present invention relates to a joint structure of a steel wall body and a reinforced concrete deck (RC deck).

Ｈ形鋼またはＴ形鋼と継手付き鋼製部材で構成される組合せ鋼矢板は、鋼製壁体として広く用いられている。
図２３（ａ）〜（ｄ）はＨ形鋼３の場合の組合せ鋼矢板９であり、図２３（ｅ）はＴ形鋼４の場合の組合せ鋼矢板９である。また、継手付き鋼製部材７の形状は、（ａ）、（ｄ）、（ｅ）に示すような直線形、もしくは（ｂ）、（ｃ）に示すようなハット形がある。継手付き鋼製部材７はフランジ５の外面に定着されており、Ｈ形鋼３の場合は（ａ）〜（ｃ）に示すように片側のフランジ外面に定着される場合と、（ｄ）に示すように両側のフランジ外面に定着される場合がある。その定着方法としては、取り付けが容易で経済的である隅肉溶接が一般的に用いられ、図２３に示すものは、継手付き鋼製部材７が隅肉溶接部２７を介してフランジに定着されている。 Combined steel sheet piles composed of H-shaped steel or T-shaped steel and steel members with joints are widely used as steel walls.
23 (a) to 23 (d) are the combined steel sheet pile 9 in the case of the H-shaped steel 3, and FIG. 23 (e) is the combined steel sheet pile 9 in the case of the T-shaped steel 4. Further, the shape of the steel member 7 with a joint includes a linear shape as shown in (a), (d) and (e), or a hat shape as shown in (b) and (c). The steel member 7 with a joint is fixed to the outer surface of the flange 5, and in the case of the H-shaped steel 3, as shown in (a) to (c), it is fixed to the outer surface of the flange on one side, and in (d). As shown, it may be fixed to the outer surfaces of the flanges on both sides. As the fixing method, fillet welding, which is easy to install and economical, is generally used, and in the one shown in FIG. 23, the steel member 7 with a joint is fixed to the flange via the fillet weld 27. ing.

このような組合せ鋼矢板９からなる鋼製壁体を本設壁として利用する場合、図２４に示すように、鋼製壁体３１とＲＣ床版２３との接合構造３３が必要となる。この接合構造３３においては、作用する曲げモーメントを鋼製壁体３１とＲＣ床版２３の間で伝達させるために、ＲＣ床版２３の曲げ鉄筋１９が鋼製壁体３１に定着される。 When a steel wall body made of such a combined steel sheet pile 9 is used as a main wall, as shown in FIG. 24, a joint structure 33 between the steel wall body 31 and the RC deck 23 is required. In the joint structure 33, the bending reinforcing bars 19 of the RC deck 23 are fixed to the steel wall 31 in order to transmit the acting bending moment between the steel wall 31 and the RC deck 23.

従来の鋼製壁体３１とＲＣ床版２３の接合構造３３として、例えば下記の非特許文献１、２にも開示されているように、フランジ５の両端に継手部２５を有する継手付きＨ形鋼３５を鋼製壁体３１に用いて、ＲＣ床版２３の曲げ鉄筋１９を鋼製壁体３１に、図２５〜図２７に示すような方式で取り付けたものがある。
(i)鉄筋埋め込み方式（図２５参照）
図２５に示す鉄筋埋め込み方式は、打設前に継手付きＨ形鋼３５のフランジ５に孔をあけ、その孔に鉄筋３７を通して地山側のフランジ５にナット３９で固定し、打設・掘削後にＲＣ床版２３の曲げ鉄筋１９を、機械式継手４１を介して定着する。
(ii)溶接方式
図２６に示す溶接方式は、打設・掘削後に継手付きＨ形鋼３５の掘削側のフランジ５に溶接でＲＣ床版２３の曲げ鉄筋１９を定着する方法であり、溶接方法としてはスタッド溶接やマグ溶接が用いられる。また、溶接方式では、Ｈ形鋼３における地山側のフランジ５と掘削側のフランジ５をつなぐ補強部材４３が取り付けられる。
(iii)溶接スリーブ方式
図２７に示す溶接スリーブ方式は、打設前に継手付きＨ形鋼３５のフランジ５に機械式継手４１を溶接で取り付け、打設・掘削後にＲＣ床版２３の曲げ鉄筋１９を前記の機械式継手４１を介して定着する。
また、溶接スリーブ方式では、溶接方式と同様に、Ｈ形鋼３における地山側フランジ５と掘削側フランジ５をつなぐ補強部材４３が取り付けられる。 As a joint structure 33 between the conventional steel wall body 31 and the RC floor slab 23, for example, as disclosed in Non-Patent Documents 1 and 2 below, an H-shaped joint having joint portions 25 at both ends of the flange 5. Some steel 35 is used for the steel wall body 31, and the bent reinforcing bar 19 of the RC floor slab 23 is attached to the steel wall body 31 by the method shown in FIGS. 25 to 27.
(i) Reinforcing bar embedding method (see Fig. 25)
In the reinforcing bar embedding method shown in FIG. 25, a hole is made in the flange 5 of the H-shaped steel 35 with a joint before driving, the reinforcing bar 37 is passed through the hole, and the flange 5 on the ground side is fixed with a nut 39, and after driving and excavation. The bent reinforcing bar 19 of the RC floor slab 23 is fixed via the mechanical joint 41.
(ii) Welding method The welding method shown in FIG. 26 is a method of fixing the bent reinforcing bar 19 of the RC floor slab 23 to the flange 5 on the drilling side of the H-shaped steel 35 with a joint after casting and drilling. As such, stud welding and mug welding are used. Further, in the welding method, a reinforcing member 43 connecting the flange 5 on the ground side and the flange 5 on the excavation side of the H-section steel 3 is attached.
(iii) Welding sleeve method In the welding sleeve method shown in FIG. 27, a mechanical joint 41 is attached by welding to a flange 5 of an H-shaped steel 35 with a joint before casting, and after casting and excavation, the bent reinforcing bar of the RC floor slab 23 is bent. 19 is fixed via the mechanical joint 41.
Further, in the welding sleeve method, as in the welding method, a reinforcing member 43 connecting the ground side flange 5 and the excavation side flange 5 in the H-shaped steel 3 is attached.

「トンネル標準示方書〔開削工編〕・同解説」,土木学会，2006"Tunnel Standard Specification [Excavation Work] / Explanation", Japan Society of Civil Engineers, 2006 「鉄道構造物等設計標準・同解説 開削トンネル」，鉄道総合技術研究所，2001"Railway Structure Design Standards / Explanation Excavation Tunnel", Railway Technical Research Institute, 2001

鉄筋埋め込み方式では、ＲＣ床版２３の曲げ鉄筋１９を鋼製壁体３１に取り付け位置が打設前に決定されるため、打設時に生ずる施工誤差（深度方向）に対応できないという課題がある。
また、溶接方式および溶接スリーブ方式を、継手付き鋼製部材７とＨ形鋼３からなる組合せ鋼矢板９によって形成される鋼製壁体３１とＲＣ床版２３の接合部に適用すると、継手付き鋼製部材７が接合面に位置する場合、曲げ鉄筋１９は継手付き鋼製部材７に定着される。前述したように、継手付き鋼製部材７はＨ形鋼３のフランジ５端部の隅肉溶接部２７のみで定着されている。そのため、曲げ鉄筋１９が継手付き鋼製部材７中央部（隅肉溶接部２７と隅肉溶接部２７の中間部）に定着されると、鋼製壁体３１やＲＣ床版２３に作用する曲げモーメントによって曲げ鉄筋１９に生じる軸力により、図２８に示すように、継手付き鋼製部材７に曲げ変形が生じる。このため、接合部の耐力が弱く、定着されるＲＣ床版２３の曲げ鉄筋１９に対して接合部の強度確保ができないという課題がある。
それ故、曲げ鉄筋１９の定着位置は、後述する実施例で示すように継手付き鋼製部材７の隅肉溶接部２７の位置の近傍に限られることになり、鉄筋の本数や接合位置が限定され、施工の自由度が小さく、施工誤差への対応ができないという課題がある。 In the reinforcing bar embedding method, since the mounting position of the bent reinforcing bar 19 of the RC deck 23 to the steel wall body 31 is determined before casting, there is a problem that it cannot cope with the construction error (depth direction) that occurs at the time of casting.
Further, when the welding method and the welding sleeve method are applied to the joint portion between the steel wall body 31 and the RC floor slab 23 formed by the combined steel sheet pile 9 made of the steel member 7 with a joint and the H-shaped steel 3, the joint is attached. When the steel member 7 is located on the joint surface, the bent reinforcing bar 19 is fixed to the steel member 7 with a joint. As described above, the steel member 7 with a joint is fixed only at the fillet welded portion 27 at the end of the flange 5 of the H-shaped steel 3. Therefore, when the bent reinforcing bar 19 is fixed to the central portion (intermediate portion between the fillet welded portion 27 and the fillet welded portion 27) of the steel member 7 with a joint, the bending acting on the steel wall body 31 and the RC floor slab 23. As shown in FIG. 28, the axial force generated in the bent reinforcing bar 19 due to the moment causes bending deformation of the steel member 7 with a joint. Therefore, there is a problem that the proof stress of the joint portion is weak and the strength of the joint portion cannot be secured with respect to the bent reinforcing bar 19 of the RC floor slab 23 to be fixed.
Therefore, the fixing position of the bent reinforcing bar 19 is limited to the vicinity of the position of the fillet welded portion 27 of the steel member 7 with a joint as shown in Examples described later, and the number of reinforcing bars and the joining position are limited. However, there is a problem that the degree of freedom of construction is small and it is not possible to deal with construction errors.

本発明はかかる課題を解決するためになされたものであり、継手付き鋼製部材とＨ形鋼からなる組合せ鋼矢板によって形成される鋼製壁体に適用が可能であり、簡単な加工で接合が可能であると共に高い耐力を有し、かつ施工誤差にも対応可能な、鋼製壁体と鉄筋コンクリート床版の接合構造を提供することを目的としている． The present invention has been made to solve such a problem, and can be applied to a steel wall body formed of a combination steel sheet pile made of a steel member with a joint and an H-shaped steel, and can be joined by simple processing. It is an object of the present invention to provide a joint structure of a steel wall body and a reinforced concrete deck slab, which can cope with construction errors as well as having high resistance.

（１）本発明に係る鋼製壁体と鉄筋コンクリート床版の接合構造は、Ｈ形鋼と該Ｈ形鋼の片側または両側のフランジ外面に取り付けられた継手付き鋼製部材とを有する組合せ鋼矢板を連結して形成される鋼製壁体と、該鋼製壁体の片側に配設され、内部に曲げ鉄筋を有する鉄筋コンクリート床版との接合構造であって、
前記継手付き鋼製部材の外面に、前記Ｈ形鋼のウェブを跨ぐようにベースプレートを配置し、該ベースプレートを前記フランジに前記ウェブを挟んで各１列以上のボルト列によってボルト接合し、前記鉄筋コンクリート床版の曲げ鉄筋を前記ボルト列の間において前記ベースプレートに定着したベースプレート鉄筋定着部を含むことを特徴とするものである。 (1) The joint structure of the steel wall body and the reinforced concrete floor slab according to the present invention is a combined steel sheet pile having an H-shaped steel and a steel member with a joint attached to the outer surface of a flange on one side or both sides of the H-shaped steel. It is a joint structure of a steel wall body formed by connecting the steel walls and a reinforced concrete floor slab arranged on one side of the steel wall body and having a bent reinforcing bar inside.
A base plate is arranged on the outer surface of the steel member with a joint so as to straddle the web of the H-shaped steel, and the base plate is bolted to the flange with the web sandwiched by one or more rows of bolts. It is characterized by including a base plate reinforcing bar fixing portion in which the bent reinforcing bar of the floor slab is fixed to the base plate between the bolt rows.

（２）また、Ｔ形鋼と該Ｔ形鋼のフランジ外面に取り付けられた継手付き鋼製部材とを有する組合せ鋼矢板を連結して形成される鋼製壁体と、該鋼製壁体の片側に配設され、内部に曲げ鉄筋を有する鉄筋コンクリート床版との接合構造であって、
前記継手付き鋼製部材の外面に、前記Ｔ形鋼のウェブを跨ぐようにベースプレートを配置し、該ベースプレートを前記フランジに前記ウェブを挟んで各１列以上のボルト列によってボルト接合し、前記鉄筋コンクリート床版の曲げ鉄筋を前記ボルト列の間において前記ベースプレートに定着したベースプレート鉄筋定着部を含むことを特徴とするものである。 (2) Further, a steel wall body formed by connecting a combined steel sheet pile having a T-shaped steel and a steel member with a joint attached to the outer surface of the flange of the T-shaped steel, and the steel wall body. It is a joint structure with a reinforced concrete floor slab that is arranged on one side and has bent reinforcing bars inside.
A base plate is arranged on the outer surface of the steel member with a joint so as to straddle the web of the T-shaped steel, and the base plate is bolted to the flange with the web sandwiched by one or more rows of bolts. It is characterized by including a base plate reinforcing bar fixing portion in which the bent reinforcing bar of the floor slab is fixed to the base plate between the bolt rows.

（３）また、上記（１）又は（２）に記載のものにおいて、前記ベースプレートの板厚が、定着される鉄筋コンクリート床版の曲げ鉄筋径の1/3以上であることを特徴とするものである。 (3) Further, in the above (1) or (2), the thickness of the base plate is 1/3 or more of the diameter of the bent reinforcing bar of the reinforced concrete floor slab to be fixed. is there.

（４）また、上記（１）乃至（３）のいずれかに記載のものにおいて、前記ベースプレートの幅が140mm以上であることを特徴とするものである。 (4) Further, in any of the above (1) to (3), the width of the base plate is 140 mm or more.

（５）また、上記（１）乃至（４）のいずれかに記載のものにおいて、前記ベースプレートが取り付けられているフランジにおける前記ボルト接合部近傍と前記ウェブとを繋ぐ補剛部材を備えていることを特徴とするものである。 (5) Further, in any one of the above (1) to (4), a stiffening member for connecting the vicinity of the bolt joint in the flange to which the base plate is attached and the web is provided. It is characterized by.

本発明に係る鋼製壁体と鉄筋コンクリート床版の接合構造は、継手付き鋼製部材の外面に、Ｈ形鋼又はＴ形鋼のウェブを跨ぐようにベースプレートを配置し、該ベースプレートをＨ形鋼又はＴ形鋼のフランジに前記ウェブを挟んで各１列以上のボルト列によってボルト接合し、鉄筋コンクリート床版の曲げ鉄筋を前記ボルト列の間において前記ベースプレートに定着したベースプレート鉄筋定着部を含むことにより、組合せ鋼矢板によって形成される鋼製壁体に適用が可能であり、簡単な加工で接合が可能で高い耐力を有し、かつ施工誤差にも対応可能な鋼製壁体とＲＣ床版の接合構造を実現できる。
これによって、鋼製壁体に定着可能なＲＣ床版の曲げ鉄筋の太径化・密配筋に対応可能となる。また、鋼製壁体の打設時に施工誤差が生じた場合でも、鋼製壁体を打設しなおさずにＲＣ床版を構築でき、施工効率が向上する。 In the joint structure of the steel wall body and the reinforced concrete floor slab according to the present invention, a base plate is arranged on the outer surface of the steel member with a joint so as to straddle the web of H-shaped steel or T-shaped steel, and the base plate is placed on the H-shaped steel. Alternatively, the web is sandwiched between the T-shaped steel flanges and bolted by one or more rows of bolts, and the bent reinforcing bars of the reinforced concrete floor slab are included between the bolt rows to include the base plate reinforcing bar fixing portion fixed to the base plate. , Applicable to steel wall bodies formed by combined steel sheet piles, can be joined by simple processing, has high strength, and can cope with construction errors. A joint structure can be realized.
This makes it possible to increase the diameter and densely distribute the bent reinforcing bars of the RC deck that can be fixed to the steel wall body. Further, even if a construction error occurs when the steel wall body is placed, the RC deck can be constructed without re-casting the steel wall body, and the construction efficiency is improved.

実施の形態に係る鋼製壁体と鉄筋コンクリート床版の接合構造の説明図あって、図１（ａ）は平面図、図１（ｂ）は側面図、図１（ｃ）は図１（ａ）の矢視Ａ−Ａ図である。There is an explanatory view of the joint structure of the steel wall body and the reinforced concrete deck according to the embodiment, FIG. 1 (a) is a plan view, FIG. 1 (b) is a side view, and FIG. 1 (c) is FIG. 1 (a). ) Is a view AA. 実施の形態におけるベースプレートの最小幅を説明する図であって、図２（ａ）は平面図、図２（ｂ）は図２（ａ）の矢視Ａ−Ａ図である。It is a figure explaining the minimum width of the base plate in an embodiment, FIG. 2A is a plan view, and FIG. 2B is an arrow view AA of FIG. 2A. 実施の形態における施工誤差対応可能範囲を説明する図であって、図３（ａ）は平面図、図３（ｂ）は図３（ａ）の矢視Ａ−Ａ図である。It is a figure explaining the construction error correspondence range in an embodiment, FIG. 3A is a plan view, and FIG. 3B is an arrow view AA of FIG. 3A. 実施の形態における鋼製壁体と鉄筋コンクリート床版の接合構造の他の態様を説明する図であって、図４（ａ）は平面図、図４（ｂ）は側面図である（その１）。It is a figure explaining another aspect of the joint structure of a steel wall body and a reinforced concrete deck in an embodiment, FIG. 4A is a plan view, and FIG. 4B is a side view (No. 1). .. 実施の形態における鋼製壁体と鉄筋コンクリート床版の接合構造の他の態様を説明する図であって、図５（ａ）は平面図、図５（ｂ）は側面図である（その２）。It is a figure explaining another aspect of the joint structure of a steel wall body and a reinforced concrete deck in an embodiment, FIG. 5A is a plan view, and FIG. 5B is a side view (Part 2). .. 実施例において示した従来構造例１の説明図であり、図６（ａ）は平面図、図６（ｂ）は側面図である。It is explanatory drawing of the conventional structure example 1 shown in an Example, FIG. 6A is a plan view, and FIG. 6B is a side view. 実施例において示した従来構造例２の説明図であり、図７（ａ）は平面図、図７（ｂ）は側面図である。It is explanatory drawing of the conventional structure example 2 shown in an Example, FIG. 7A is a plan view, and FIG. 7B is a side view. 実施例において示した発明例１の説明図であり、図８（ａ）は平面図、図８（ｂ）は側面図である。It is explanatory drawing of Invention Example 1 shown in an Example, FIG. 8A is a plan view, and FIG. 8B is a side view. 実施例において示した発明例２の説明図であり、図９（ａ）は平面図、図９（ｂ）は側面図である。It is explanatory drawing of Invention Example 2 shown in an Example, FIG. 9A is a plan view, and FIG. 9B is a side view. 実施例において示した発明例３の説明図であり、図１０（ａ）は平面図、図１０（ｂ）は側面図である。It is explanatory drawing of Invention Example 3 shown in an Example, FIG. 10A is a plan view, and FIG. 10B is a side view. 実施例において示した発明例４の説明図であり、図１１（ａ）は平面図、図１１（ｂ）は側面図である。It is explanatory drawing of Invention Example 4 shown in an Example, FIG. 11A is a plan view, and FIG. 11B is a side view. 実施例において示した発明例５の説明図であり、図１２（ａ）は平面図、図１２（ｂ）は側面図である。It is explanatory drawing of Invention Example 5 shown in an Example, FIG. 12A is a plan view, and FIG. 12B is a side view. 実施例において示した発明例６の説明図であり、図１３（ａ）は平面図、図１３（ｂ）は側面図である。It is explanatory drawing of Invention Example 6 shown in an Example, FIG. 13A is a plan view, and FIG. 13B is a side view. 実施例において示した発明例７の説明図であり、図１４（ａ）は平面図、図１４（ｂ）は側面図である。It is explanatory drawing of Invention Example 7 shown in an Example, FIG. 14A is a plan view, and FIG. 14B is a side view. 実施例において示した発明例８の説明図であり、図１５（ａ）は平面図、図１５（ｂ）は側面図である。It is explanatory drawing of Invention Example 8 shown in an Example, FIG. 15A is a plan view, and FIG. 15B is a side view. 実施例において示した発明例９の説明図であり、図１６（ａ）は平面図、図１６（ｂ）は側面図である。It is explanatory drawing of Invention Example 9 shown in an Example, FIG. 16A is a plan view, and FIG. 16B is a side view. 実施例において示した発明例１０の説明図であり、図１７（ａ）は平面図、図１７（ｂ）は側面図である。It is explanatory drawing of Invention Example 10 shown in an Example, FIG. 17A is a plan view, and FIG. 17B is a side view. 実施例において示した発明例１１の説明図であり、図１８（ａ）は平面図、図１８（ｂ）は側面図である。It is explanatory drawing of Invention Example 11 shown in an Example, FIG. 18A is a plan view, and FIG. 18B is a side view. 実施例において示した発明例１２の説明図であり、図１９（ａ）は平面図、図１９（ｂ）は側面図である。It is explanatory drawing of Invention Example 12 shown in an Example, FIG. 19A is a plan view, and FIG. 19B is a side view. 実施例において示した発明例１３の説明図であり、図２０（ａ）は平面図、図２０（ｂ）は側面図である。It is explanatory drawing of Invention Example 13 shown in an Example, FIG. 20A is a plan view, and FIG. 20B is a side view. 実施例において示した発明例１４の説明図であり、図２１（ａ）は平面図、図２１（ｂ）は側面図である。It is explanatory drawing of Invention Example 14 shown in an Example, FIG. 21A is a plan view, and FIG. 21B is a side view. 実施例において示した発明例１５の説明図であり、図２２（ａ）は平面図、図２２（ｂ）は側面図である。It is explanatory drawing of Invention Example 15 shown in an Example, FIG. 22A is a plan view, and FIG. 22B is a side view. 一般的な組合せ鋼矢板の説明図である。It is explanatory drawing of the general combination steel sheet pile. 鋼製壁体と鉄筋コンクリート床版の接合部の位置を説明する図である。It is a figure explaining the position of the joint part of a steel wall body and a reinforced concrete deck. 従来の鋼製壁体と鉄筋コンクリート床版の接合部の説明図である（その１）。It is explanatory drawing of the joint part of the conventional steel wall body and a reinforced concrete deck (No. 1). 従来の鋼製壁体と鉄筋コンクリート床版の接合部の説明図である（その２）。It is explanatory drawing of the joint part of the conventional steel wall body and a reinforced concrete deck (No. 2). 従来の鋼製壁体と鉄筋コンクリート床版の接合部の説明図である（その３）。It is explanatory drawing of the joint part of the conventional steel wall body and a reinforced concrete deck (No. 3). 従来の鋼製壁体と鉄筋コンクリート床版の接合部の課題を説明する図である。It is a figure explaining the problem of the joint part of the conventional steel wall body and a reinforced concrete deck.

本実施の形態に係る鋼製壁体と鉄筋コンクリート床版（以下、「ＲＣ床版」という）の接合構造１は、図１に示すように、Ｈ形鋼３と、Ｈ形鋼３の一方のフランジ５の外面に取り付けられた継手付き鋼製部材７とを有する組合せ鋼矢板９を連結して形成される鋼製壁体（図示なし）と、鋼製壁体における継手付き鋼製部材７側に配設され、内部に曲げ鉄筋１９を有する鉄筋コンクリート床版２３とを接合するものであって、
継手付き鋼製部材７の外面（継手付き鋼製部材７のフランジ５に接していない面）に、Ｈ形鋼３のウェブ１３を跨ぐようにベースプレート１５を配置し、ベースプレート１５をフランジ５にウェブ１３を挟んで各１列以上（本例では各１列）のボルト列１７によってボルト接合し、鉄筋コンクリート床版１１の曲げ鉄筋１９をボルト列１７の間においてベースプレート１５に定着したベースプレート鉄筋定着部２１を含むことを特徴とするものである。
各構成を詳細に説明する。 As shown in FIG. 1, the joint structure 1 of the steel wall body and the reinforced concrete floor slab (hereinafter referred to as “RC floor slab”) according to the present embodiment is one of the H-shaped steel 3 and the H-shaped steel 3. A steel wall body (not shown) formed by connecting a combined steel sheet pile 9 having a steel member 7 with a joint attached to the outer surface of the flange 5 and a steel member 7 side with a joint in the steel wall body. It is arranged in the above and joins a reinforced concrete floor slab 23 having a bent reinforcing bar 19 inside.
A base plate 15 is arranged so as to straddle the web 13 of the H-shaped steel 3 on the outer surface of the steel member 7 with a joint (the surface of the steel member 7 with a joint not in contact with the flange 5), and the base plate 15 is webbed on the flange 5. Base plate reinforcing bar fixing portion 21 in which the bent reinforcing bars 19 of the reinforced concrete floor slab 11 are fixed to the base plate 15 between the bolt rows 17 by bolt-joining with bolt rows 17 of one row or more (one row each in this example) sandwiching 13 It is characterized by including.
Each configuration will be described in detail.

＜Ｈ形鋼＞
Ｈ形鋼３は、図１に示すように、フランジ５とウェブ１３を有し、ＲＣ床版２３が接合されるフランジ５には、ボルト列１７を構成するボルトが挿入されるボルト孔が設けられている。 <H-section steel>
As shown in FIG. 1, the H-section steel 3 has a flange 5 and a web 13, and the flange 5 to which the RC deck 23 is joined is provided with a bolt hole into which a bolt constituting the bolt row 17 is inserted. Has been done.

＜継手付き鋼製部材＞
継手付き鋼製部材７は、両端に継手部２５を有するものであり、その形状は特に限定されない。例えば、図１に示すような平板状のものや、図２３（ｂ）、（ｃ）及び後述の実施例で例示する図２０、図２１に示すような断面ハット形状のものが挙げられる。
継手付き鋼製部材７は、図１に示すように、隅肉溶接部２７によってＨ形鋼３のフランジ５に接合されている。
なお、図１に示す例では、継手付き鋼製部材７はＨ形鋼３の片側のフランジ５に取り付つけられているが、本発明はこれに限定されるものではなく、継手付き鋼製部材７をＨ形鋼３の両側のフランジ５に取り付ける態様も含む（図２２参照）。もっとも、継手付き鋼製部材７を両側のフランジ５に取り付けた場合であっても、ＲＣ床版２３は一方の側の継手付き鋼製部材７に接合される。 <Steel member with fitting>
The steel member 7 with a joint has joint portions 25 at both ends, and the shape thereof is not particularly limited. For example, a flat plate shape as shown in FIG. 1 and a cross-sectional hat shape as shown in FIGS. 23 (b) and 23 (c) and FIGS. 20 and 21 illustrated in Examples described later can be mentioned.
As shown in FIG. 1, the jointed steel member 7 is joined to the flange 5 of the H-shaped steel 3 by the fillet welded portion 27.
In the example shown in FIG. 1, the steel member 7 with a joint is attached to the flange 5 on one side of the H-shaped steel 3, but the present invention is not limited to this and is made of steel with a joint. A mode in which the member 7 is attached to the flanges 5 on both sides of the H-shaped steel 3 is also included (see FIG. 22). However, even when the steel member 7 with a joint is attached to the flanges 5 on both sides, the RC deck 23 is joined to the steel member 7 with a joint on one side.

＜ＲＣ床版＞
ＲＣ床版２３は、内部に曲げ鉄筋１９が配設されており、この曲げ鉄筋１９は、ベースプレート１５のボルト列１７の間に溶接（スタッド溶接やマグ溶接）で定着されている。 <RC floor slab>
The RC floor slab 23 is provided with bent reinforcing bars 19 inside, and the bent reinforcing bars 19 are fixed between the bolt rows 17 of the base plate 15 by welding (stud welding or mug welding).

＜ベースプレート＞
ベースプレート１５は、継手付き鋼製部材７の外面に、Ｈ形鋼３のウェブ１３を跨ぐように配置されている。ベースプレート１５には、ベースプレート１５を継手付き鋼製部材７の外面に配置した状態で、ウェブ１３を挟んで両側にボルト接合するためのボルト孔が設けられている。
ベースプレート１５は、鋼板で形成されている。 <Base plate>
The base plate 15 is arranged on the outer surface of the steel member 7 with a joint so as to straddle the web 13 of the H-shaped steel 3. The base plate 15 is provided with bolt holes for bolting on both sides of the web 13 with the base plate 15 arranged on the outer surface of the steel member 7 with a joint.
The base plate 15 is made of a steel plate.

前述したように、ＲＣ床版２３の曲げ鉄筋１９はベースプレート１５に溶接で定着するため、ベースプレート１５の鉄筋溶接部の溶落ちや極端なひずみの発生を防ぐため、ベースプレート１５の板厚は定着する鉄筋径の1/3以上とするのが好ましい。 As described above, since the bent reinforcing bar 19 of the RC floor slab 23 is fixed to the base plate 15 by welding, the plate thickness of the base plate 15 is fixed in order to prevent the welded portion of the reinforcing bar of the base plate 15 from melting or causing extreme strain. It is preferably 1/3 or more of the reinforcing bar diameter.

また、ベースプレート１５幅は、140mm以上が好ましい。その理由を図２に基づいて以下に説明する。
最小のベースプレート１５幅となるのは、図２に示すように、左右のボルト列１７数が各１列で、ボルト列１７間に定着される鉄筋の幅方向の本数が1本の場合であるので、この場合に必要最小限のベースプレート１５幅を検討する。
一般に使用される最小ボルト径はＭ12であり、このボルトについてボルト締結作業に支障がでないようにするには、ボルトとウェブ１３中心線のあき長さを50mm以上とすればよい。
このあき長さがあれば、ボルト列間に太径鉄筋（〜Ｄ51）を定着することもできる。
また、ベースプレート１５の端抜けを防止するには、ボルトとベースプレート１５の縁端距離は20mm以上とすればよい。
このように考えれば、ベースプレート１５の中心から幅方向の距離は70mmとなり、全幅は140mmとなる。
ベースプレート１５の幅は、この最小幅を基準として、ボルト列数と定着する鉄筋の幅方向の鉄筋本数に応じて大きくすればよい。 The width of the base plate 15 is preferably 140 mm or more. The reason will be described below with reference to FIG.
As shown in FIG. 2, the minimum width of the base plate 15 is when the number of left and right bolt rows 17 is one row each and the number of reinforcing bars fixed between the bolt rows 17 in the width direction is one. Therefore, in this case, the minimum required width of the base plate 15 is examined.
The minimum bolt diameter generally used is M12, and in order not to interfere with the bolt fastening work for this bolt, the clearance length between the bolt and the center line of the web 13 may be 50 mm or more.
With this clearance length, a large-diameter reinforcing bar (~ D51) can be fixed between the bolt rows.
Further, in order to prevent the end of the base plate 15 from coming off, the edge distance between the bolt and the base plate 15 may be 20 mm or more.
Considering this way, the distance from the center of the base plate 15 in the width direction is 70 mm, and the total width is 140 mm.
The width of the base plate 15 may be increased based on the minimum width according to the number of bolt rows and the number of reinforcing bars in the width direction of the reinforcing bars to be fixed.

上記のように構成された本実施の形態の鋼製壁体とＲＣ床版の接合構造１においては、鋼製壁体またはＲＣ床版２３に作用する曲げモーメントにより生じた曲げ鉄筋１９の軸力は、ベースプレート１５に伝達し、ボルトを介してＨ形鋼３フランジ５に伝達される。そのため、図２８に示すような鋼矢板の曲げ変形は生じなくなり、接合部の強度確保が可能となる。 In the joint structure 1 of the steel wall body and the RC deck of the present embodiment configured as described above, the axial force of the bending reinforcing bar 19 generated by the bending moment acting on the steel wall body or the RC deck 23. Is transmitted to the base plate 15 and is transmitted to the H-shaped steel 3 flange 5 via the bolt. Therefore, the bending deformation of the steel sheet pile as shown in FIG. 28 does not occur, and the strength of the joint can be ensured.

また、本実施の形態の鋼製壁体とＲＣ床版の接合構造１においては、組合せ鋼矢板９を打設して鋼製壁体を構築する前に、組合せ鋼矢板９にベースプレート１５を予め取り付けておき、鋼製壁体を構築し、ＲＣ床版接合面側の地盤を掘削後、ＲＣ床版２３の曲げ鉄筋１９を定着することが可能である。
そのため、施工誤差が生じた場合でも、ＲＣ床版２３の曲げ鉄筋１９を鋼製壁体に取り付ける位置は、図３に示すように、ベースプレート１５の高さ方向の範囲内であれば調整可能であり、施工性に優れる。 Further, in the joint structure 1 of the steel wall body and the RC deck of the present embodiment, the base plate 15 is previously attached to the combined steel sheet pile 9 before the combined steel sheet pile 9 is driven to construct the steel wall body. It is possible to fix the bent reinforcing bar 19 of the RC deck 23 after the steel wall body is constructed and the ground on the RC deck joint surface side is excavated.
Therefore, even if a construction error occurs, the position where the bent reinforcing bar 19 of the RC deck 23 is attached to the steel wall body can be adjusted as long as it is within the height direction of the base plate 15 as shown in FIG. Yes, it has excellent workability.

前述したように、鋼製壁体またはＲＣ床版２３に曲げモーメントが作用して生じた曲げ鉄筋１９の軸力はベースプレート１５に伝達し、ボルトを介してＨ形鋼３のフランジ５に伝達される。そのため、ＲＣ床版２３との接合面側のＨ形鋼３のフランジ５には、幅方向と深度方向の曲げ変形が生じる。
このため、ベースプレート１５に取り付けられる曲げ鉄筋１９量に対してフランジ５の板厚が薄いと、前記曲げ変形が著しくなり、接合部の強度を確保できない。この対策としては、取り付ける曲げ鉄筋１９量に応じてＨ形鋼３のフランジ５の板厚を厚くすればよい。
しかし、フランジ５の板厚を著しく厚くすると、鋼製壁体の鋼重が増えて不経済となったり、打設時の抵抗が大きくなったりする場合がある。そこで、このような場合には、図４、図５に示すように、フランジ５とウェブ１３をつなぐ２枚で一対となる補剛部材２９を取り付けるようにすればよい。このようにすれば、フランジ５の板厚を厚くすることなく、前述したフランジ５の変形を抑制できる。 As described above, the axial force of the bending reinforcing bar 19 generated by the bending moment acting on the steel wall body or the RC floor slab 23 is transmitted to the base plate 15 and transmitted to the flange 5 of the H-shaped steel 3 via the bolt. To. Therefore, the flange 5 of the H-shaped steel 3 on the joint surface side with the RC deck 23 is bent and deformed in the width direction and the depth direction.
Therefore, if the plate thickness of the flange 5 is thin with respect to the amount of bent reinforcing bars 19 attached to the base plate 15, the bending deformation becomes remarkable and the strength of the joint cannot be ensured. As a countermeasure, the plate thickness of the flange 5 of the H-shaped steel 3 may be increased according to the amount of bent reinforcing bars 19 to be attached.
However, if the plate thickness of the flange 5 is remarkably increased, the steel weight of the steel wall body may increase, which may be uneconomical or increase the resistance at the time of casting. Therefore, in such a case, as shown in FIGS. 4 and 5, it is sufficient to attach a pair of stiffening members 29 that connect the flange 5 and the web 13. By doing so, the above-mentioned deformation of the flange 5 can be suppressed without increasing the plate thickness of the flange 5.

図４に示す各補剛部材２９は、矩形状の板材からなり、一端をフランジ５におけるボルトの外側に固定し、他端を上部に固定した例である。また、図５に示す各補剛部材２９は、直角三角形状の板材からなり、直角を挟む辺部をＨ形鋼３のフランジ５とウェブ１３に当接させ、かつ水平に配置した例である。
補剛部材２９をフランジ５に固定する位置は、ボルトからの荷重伝達を考慮してボルト孔中心から外側に「ボルト径×３．０以下」の範囲内とするのがよい。ただし、ボルト孔への影響を考慮して、「ボルト径×1．０以上」とすることが望ましい。 Each stiffening member 29 shown in FIG. 4 is an example made of a rectangular plate material, one end of which is fixed to the outside of a bolt in the flange 5, and the other end of which is fixed to the upper part. Further, each stiffening member 29 shown in FIG. 5 is an example in which each stiffening member 29 is made of a right-angled triangular plate material, and the side portions sandwiching the right angle are brought into contact with the flange 5 of the H-shaped steel 3 and the web 13 and arranged horizontally. ..
The position where the stiffening member 29 is fixed to the flange 5 is preferably within the range of "bolt diameter x 3.0 or less" from the center of the bolt hole to the outside in consideration of load transmission from the bolt. However, in consideration of the influence on the bolt holes, it is desirable to set the bolt diameter to 1.0 or more.

なお、上記の例は、継手付き鋼製部材７がＨ形鋼３のフランジ５にすみ肉溶接で定着された組合せ鋼矢板９の例であるが、本発明が適用できる組合せ鋼矢板９はこれに限られず、継手付き鋼製部材７がＨ形鋼３のフランジ５に定着されず当接しているのみの組合せ鋼矢板９の場合でも適用できる。 The above example is an example of the combined steel sheet pile 9 in which the steel member 7 with a joint is fixed to the flange 5 of the H-shaped steel 3 by fillet welding, but the combined steel sheet pile 9 to which the present invention can be applied is this. The present invention is not limited to the above, and the case of the combined steel sheet pile 9 in which the steel member 7 with a joint is not fixed to the flange 5 of the H-shaped steel 3 and is only in contact with the flange 5 can be applied.

また、上記の例は、継手付き鋼製部材７が定着される形鋼がＨ形鋼３の例であったが、本発明はＨ形鋼３に限定されるものではなく、Ｔ形鋼の場合も含む（図１７〜図１９参照）。 Further, in the above example, the shaped steel to which the steel member 7 with a joint is fixed is an example of the H-shaped steel 3, but the present invention is not limited to the H-shaped steel 3, but the T-shaped steel. Including cases (see FIGS. 17 to 19).

また、上記の例は、ＲＣ床版２３の全ての曲げ鉄筋１９を、ベースプレート１５を介して定着した例であるが、本発明は曲げ鉄筋１９を、ベースプレート１５を介して定着するベースプレート鉄筋定着部２１を含むものであればよく、継手付き鋼製部材７における隅肉溶接部２７の近傍に定着されている曲げ鉄筋１９が存在してもよい。このような態様の具体例は、後述の実施例における図１３〜図１６に示されている。 Further, the above example is an example in which all the bent reinforcing bars 19 of the RC floor slab 23 are fixed via the base plate 15, but in the present invention, the bent reinforcing bars 19 are fixed via the base plate 15. As long as it contains 21, there may be a bent reinforcing bar 19 fixed in the vicinity of the fillet welded portion 27 in the steel member 7 with a joint. Specific examples of such an embodiment are shown in FIGS. 13 to 16 in the examples described later.

本発明の適用例は種々の態様が想定されるので、これらを下記の表に示すと共に、図を用いて説明する。なお、比較のために、従来の接合構造３３を従来構造例１、２（図６、図７）として示し、本発明を適用したものを発明例１〜１５として図８〜図２２に示す。 Since various embodiments of the present invention are assumed, these are shown in the table below and will be described with reference to the drawings. For comparison, the conventional joint structure 33 is shown as Conventional Structure Examples 1 and 2 (FIGS. 6 and 7), and the one to which the present invention is applied is shown in FIGS. 8 to 22 as Invention Examples 1 to 15.

Figure 2021076000
Figure 2021076000

従来構造例１は、図６に示すように、継手付き鋼製部材７をＨ形鋼３のフランジ５に接合する隅肉溶接部２７の近傍にＲＣ床版２３の曲げ鉄筋１９をフランジ５幅方向に２本の定着し、鉄筋を定着した部位に両方のフランジ５に亘る補強部材４３を設けたものである。
従来構造例２は、図７に示すように、基本構造は従来構造例１と同じで、定着する曲げ鉄筋１９を２段にした例である。
このような、従来構造例１、２では、曲げ鉄筋１９の定着位置が隅肉溶接部２７の近傍に限定され、それ故に鉄筋の本数が限定され、また施工誤差に対する許容度が少ないという課題がある。 In the conventional structure example 1, as shown in FIG. 6, the bent reinforcing bar 19 of the RC floor slab 23 is placed in the vicinity of the fillet welded portion 27 for joining the steel member 7 with a joint to the flange 5 of the H-shaped steel 3 in the flange 5 width. Reinforcing members 43 extending over both flanges 5 are provided at the portions where the two fixings are fixed in the direction and the reinforcing bars are fixed.
As shown in FIG. 7, the conventional structure example 2 has the same basic structure as the conventional structure example 1, and is an example in which the bent reinforcing bars 19 to be fixed are formed in two stages.
In such conventional structural examples 1 and 2, there is a problem that the fixing position of the bent reinforcing bar 19 is limited to the vicinity of the fillet welded portion 27, therefore the number of reinforcing bars is limited, and the tolerance for construction error is low. is there.

このような従来構造１、２に対して、発明例を適用することで図８〜図１６に示す種々の態様の接合構造１が可能となる。
例えば、発明例１は、図８に示すように、Ｈ形鋼３のウェブ１３に対応する位置にベースプレート１５を介して曲げ鉄筋１９を、幅方向に１本かつ１段定着した例である。
また、発明例２は、図９に示すように、図８の例の段数を２段にした態様である。
また、発明例３は、図１０に示すように、図８の例の幅方向の曲げ鉄筋１９の本数を２本とし、かつ２段にした態様である。
また、発明例４は、図１１に示すように、図９の態様に三角形の板材からなる補剛部材２９を水平方向に設置した態様である。
また、発明例５は、図１２に示すように、図９の態様に矩形の板材からなる補剛部材２９を垂直方向に設置した態様である。 By applying an example of the invention to such conventional structures 1 and 2, various forms of the bonded structure 1 shown in FIGS. 8 to 16 can be realized.
For example, as shown in FIG. 8, Invention Example 1 is an example in which one bent reinforcing bar 19 is fixed in the width direction at a position corresponding to the web 13 of the H-shaped steel 3 via the base plate 15.
Further, as shown in FIG. 9, Invention Example 2 is an embodiment in which the number of stages in the example of FIG. 8 is two.
Further, as shown in FIG. 10, Invention Example 3 is an embodiment in which the number of bent reinforcing bars 19 in the width direction of the example of FIG. 8 is two and two steps are provided.
Further, as shown in FIG. 11, Invention Example 4 is a mode in which a stiffening member 29 made of a triangular plate material is installed in the horizontal direction in the mode of FIG.
Further, as shown in FIG. 12, Invention Example 5 is an embodiment in which a stiffening member 29 made of a rectangular plate material is vertically installed in the embodiment of FIG.

発明例６〜９はベースプレート鉄筋定着部２１の他に従来構造を含む態様である。
図１３に示す発明例６は、図６に示した従来構造１と図８に示した発明例１を複合化した態様である。
また、図１４に示す発明例７は、図７に示した従来構造２と図９に示した発明例２を複合化した態様である。
また、図１５に示す発明例８は、図６に示した従来構造１と図１１に示した発明例４を複合化した態様である。
また、図１６に示す発明例９は、図６に示した従来構造１と図１２に示した発明例５を複合化した態様である。 Inventive Examples 6 to 9 include a conventional structure in addition to the base plate reinforcing bar fixing portion 21.
Invention Example 6 shown in FIG. 13 is an embodiment in which the conventional structure 1 shown in FIG. 6 and Invention Example 1 shown in FIG. 8 are combined.
Further, Invention Example 7 shown in FIG. 14 is an embodiment in which the conventional structure 2 shown in FIG. 7 and Invention Example 2 shown in FIG. 9 are combined.
Further, Invention Example 8 shown in FIG. 15 is an embodiment in which the conventional structure 1 shown in FIG. 6 and Invention Example 4 shown in FIG. 11 are combined.
Further, Invention Example 9 shown in FIG. 16 is an embodiment in which the conventional structure 1 shown in FIG. 6 and Invention Example 5 shown in FIG. 12 are combined.

発明例１０〜１２は鋼製壁体を構成する形鋼としてＴ形鋼を用いた態様である。
図１７に示す発明例１０は、図８に示した発明例１のＨ形鋼３に代えてＴ形鋼４を用いたものである。
また、図１８に示す発明例１１は、図１１に示した発明例４のＨ形鋼３に代えてＴ形鋼４を用いたものである。
また、図１９に示す発明例１２は、図１２に示した発明例５のＨ形鋼３に代えてＴ形鋼４を用いたものである。 Inventive Examples 10 to 12 are embodiments in which T-shaped steel is used as the shaped steel constituting the steel wall body.
In Invention Example 10 shown in FIG. 17, T-shaped steel 4 is used instead of H-shaped steel 3 of Invention Example 1 shown in FIG.
Further, Invention Example 11 shown in FIG. 18 uses T-shaped steel 4 instead of H-shaped steel 3 of Invention Example 4 shown in FIG.
Further, Invention Example 12 shown in FIG. 19 uses T-shaped steel 4 instead of H-shaped steel 3 of Invention Example 5 shown in FIG.

発明例１３、１４は継手付き鋼製部材７としてハット形のものを用いた態様である。
図２０に示す発明例１３は、図８に示した発明例１の直線形の継手付き鋼製部材７に代えてハット形のものを用いたものである。
図２１に示す発明例１４は、図２０に示したハット形の継手付き鋼製部材７の取り付けの向きを変えたものである。 Inventive Examples 13 and 14 are embodiments in which a hat-shaped steel member 7 with a joint is used.
Inventive Example 13 shown in FIG. 20 uses a hat-shaped member in place of the linear jointed steel member 7 of Invention Example 1 shown in FIG.
In Invention Example 14 shown in FIG. 21, the orientation of attachment of the hat-shaped steel member 7 with a joint shown in FIG. 20 is changed.

図２２に示す発明例１５は、図８に示した発明例１のＨ形鋼３における継手付き鋼製部材７が取り付いていない方にも継手付き鋼製部材７を取り付けたものである。 In Invention Example 15 shown in FIG. 22, the steel member 7 with a joint is attached to the side of the H-shaped steel 3 of Invention Example 1 shown in FIG. 8 to which the steel member 7 with a joint is not attached.

以上のように、従来構造１、２に比較して、本発明を適用することで、種々の態様が可能となり、接合構造１のバリエーションが増え、かつ施工誤差への対応も可能となる。 As described above, by applying the present invention as compared with the conventional structures 1 and 2, various aspects are possible, variations of the joint structure 1 are increased, and it is possible to deal with construction errors.

１ 接合構造(実施の形態)
３ Ｈ形鋼
４ Ｔ形鋼
５ フランジ
７ 継手付き鋼製部材
９ 組合せ鋼矢板
１３ ウェブ
１５ ベースプレート
１７ ボルト列
１９ 曲げ鉄筋
２１ ベースプレート鉄筋定着部
２３ ＲＣ床版
２５ 継手部
２７ 隅肉溶接部
２９ 補剛部材
＜従来例＞
３１ 鋼製壁体
３３ 接合構造
３５ 継手付きＨ形鋼
３７ 鉄筋
３９ ナット
４１ 機械式継手
４３ 補強部材 1 Joined structure (embodiment)
3 H-shaped steel 4 T-shaped steel 5 Flange 7 Steel member with joint 9 Combined steel sheet pile 13 Web 15 Base plate 17 Bolt row 19 Bent reinforcing bar 21 Base plate Reinforcing bar fixing part 23 RC Floor slab 25 Joint part 27 Fillet welded part 29 Stiffening Member <Conventional example>
31 Steel wall 33 Joint structure 35 H-shaped steel with joint 37 Reinforcing bar 39 Nut 41 Mechanical joint 43 Reinforcing member

Claims (5)

Ｈ形鋼と該Ｈ形鋼の片側または両側のフランジ外面に取り付けられた継手付き鋼製部材とを有する組合せ鋼矢板を連結して形成される鋼製壁体と、該鋼製壁体の片側に配設され、内部に曲げ鉄筋を有する鉄筋コンクリート床版との接合構造であって、
前記継手付き鋼製部材の外面に、前記Ｈ形鋼のウェブを跨ぐようにベースプレートを配置し、該ベースプレートを前記フランジに前記ウェブを挟んで各１列以上のボルト列によってボルト接合し、前記鉄筋コンクリート床版の曲げ鉄筋を前記ボルト列の間において前記ベースプレートに定着したベースプレート鉄筋定着部を含むことを特徴とする鋼製壁体と鉄筋コンクリート床版の接合構造。 A steel wall body formed by connecting a combination steel sheet pile having an H-shaped steel and a steel member with a joint attached to the outer surface of a flange on one side or both sides of the H-shaped steel, and one side of the steel wall body. It is a joint structure with a reinforced concrete floor slab that is arranged in and has bent reinforcing bars inside.
A base plate is arranged on the outer surface of the steel member with a joint so as to straddle the web of the H-shaped steel, and the base plate is bolted to the flange with the web sandwiched by one or more rows of bolts. A joint structure of a steel wall body and a reinforced concrete floor slab, which comprises a base plate reinforcing bar fixing portion in which bent reinforcing bars of the floor slab are fixed to the base plate between the bolt rows. Ｔ形鋼と該Ｔ形鋼のフランジ外面に取り付けられた継手付き鋼製部材とを有する組合せ鋼矢板を連結して形成される鋼製壁体と、該鋼製壁体の片側に配設され、内部に曲げ鉄筋を有する鉄筋コンクリート床版との接合構造であって、
前記継手付き鋼製部材の外面に、前記Ｔ形鋼のウェブを跨ぐようにベースプレートを配置し、該ベースプレートを前記フランジに前記ウェブを挟んで各１列以上のボルト列によってボルト接合し、前記鉄筋コンクリート床版の曲げ鉄筋を前記ボルト列の間において前記ベースプレートに定着したベースプレート鉄筋定着部を含むことを特徴とする鋼製壁体と鉄筋コンクリート床版の接合構造。 A steel wall body formed by connecting a combination steel sheet pile having a T-shaped steel and a steel member with a joint attached to the outer surface of the flange of the T-shaped steel, and arranged on one side of the steel wall body. , It is a joint structure with a reinforced concrete floor slab that has bent reinforcing bars inside.
A base plate is arranged on the outer surface of the steel member with a joint so as to straddle the web of the T-shaped steel, and the base plate is bolted to the flange with the web sandwiched by one or more rows of bolts. A joint structure of a steel wall body and a reinforced concrete floor slab, which comprises a base plate reinforcing bar fixing portion in which bent reinforcing bars of the floor slab are fixed to the base plate between the bolt rows. 前記ベースプレートの板厚が、定着される鉄筋コンクリート床版の曲げ鉄筋径の1/3以上であることを特徴とする請求項1又は２に記載の鋼製壁体と鉄筋コンクリート床版の接合構造。 The joint structure between a steel wall body and a reinforced concrete deck according to claim 1 or 2, wherein the thickness of the base plate is 1/3 or more of the diameter of the bent reinforcing bar of the reinforced concrete deck to be fixed. 前記ベースプレートの幅が140mm以上であることを特徴とする請求項1乃至３のいずれか一項に記載の鋼製壁体と鉄筋コンクリート床版の接合構造。 The joint structure between a steel wall body and a reinforced concrete deck according to any one of claims 1 to 3, wherein the width of the base plate is 140 mm or more. 前記ベースプレートが取り付けられているフランジにおける前記ボルト接合部近傍と前記ウェブとを繋ぐ補剛部材を備えていることを特徴とする請求項１乃至４のいずれか一項に記載の鋼製壁体と鉄筋コンクリート床版の接合構造。 The steel wall body according to any one of claims 1 to 4, further comprising a stiffening member for connecting the vicinity of the bolt joint in the flange to which the base plate is attached and the web. Joint structure of reinforced concrete deck.
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