JP3226973U

JP3226973U - Beam crossing structure

Info

Publication number: JP3226973U
Application number: JP2020001335U
Authority: JP
Inventors: 範夫藤田; 卓哉山口; 雅士藤岡
Original assignee: Hirose and Co Ltd
Current assignee: Hirose and Co Ltd
Priority date: 2020-04-13
Filing date: 2020-04-13
Publication date: 2020-07-30
Anticipated expiration: 2030-04-13

Abstract

【課題】労働安全衛生規則第３７１条２号で規定する突合せ継手を確保しつつ、市販の鋼材を用いて低コストで切梁を同一平面上で交差できる、切梁の交差構造を提供すること。【解決手段】同一平面上で交差する橋絡切梁１０Ａと貫挿切梁１０Ｂとを有し、橋絡切梁１０Ａは所定の間隔を隔てて同軸線上に対向させて配置した複数の分割切梁１１と、隣り合う分割切梁１１の対向部の上下両側の間に跨りボルトで連結した一対の接続補強材１２，１２とを有し、分割切梁１１の端面と接続補強材１２で囲まれた貫挿孔Ｓを通じて橋絡切梁１０Ａおよび貫挿切梁１０Ｂが同一平面上で交差し、橋絡切梁１０Ａの貫挿孔Ｓ内に介装した間詰材２０を通じて隣り合う分割切梁１１，１１間に突合せ継手Ｒ１を形成すると共に、一対の接続補強材１２，１２を通じて隣り合う分割切梁１１，１１間に重ね継手Ｒ２を形成する。【選択図】図４PROBLEM TO BE SOLVED: To provide a crossing structure of cut beams capable of crossing the cut beams on the same plane at low cost by using a commercially available steel material while securing a butt joint defined by Article 371-2 of the Industrial Safety and Health Regulations. .. SOLUTION: A bridge crossing beam 10A and a through-cutting beam 10B intersecting on the same plane are provided, and the bridge crossing beam 10A is provided with a plurality of divided cuts which are arranged facing each other on a coaxial line at a predetermined interval. A beam 11 and a pair of connection reinforcing members 12 and 12 connected by straddling bolts are provided between the upper and lower sides of the facing portions of the adjacent divided beam 11, and are surrounded by the end face of the divided beam 11 and the connection reinforcing member 12. The bridge crossing beams 10A and the crossing cut beams 10B intersect on the same plane through the formed through holes S, and the adjacent divided cuts are made through the interstitial material 20 interposed in the through holes S of the bridge crossing beams 10A. A butt joint R1 is formed between the beams 11 and 11, and a lap joint R2 is formed between the adjacent split slit beams 11 and 11 through a pair of connection reinforcing members 12 and 12. [Selection diagram] Fig. 4

Description

本考案は、山留工事で使用する切梁の交差技術に関し、特に簡易な構造と資材を用いて切梁を同一平面上で交差して架設できる切梁の交差構造に関する。 The present invention relates to a cross beam crossing technique used in mountain retaining works, and more particularly to a cross beam crossing structure in which a cross beam can be erected on the same plane by using a simple structure and materials.

山留工事においては、Ｈ形鋼等の鋼製の腹起材、切梁、火打材等を用いている。
切梁を交差して架設する場合には、一般的に交差する各切梁を上下に重ねた立体交差構造が知られている(特許文献１)。
特許文献２には、同一平面上で切梁を交差する手段として、二軸方向に向けて貫通穴と挿入穴を有する切梁専用の平面交差継手を用いることが開示され、特許文献３には、同一平面上で切梁を交差する手段として、交差用切梁を挿入可能な貫挿孔を備えた交差用治具を用いることが開示されている。 In the mountain retaining work, steel upholstery materials such as H-section steel, cutting beams, and fired materials are used.
In the case of constructing cross beams by crossing them, a three-dimensional cross structure is generally known in which each cross beam is vertically stacked (Patent Document 1).
Patent Document 2 discloses that a plane intersecting joint dedicated to a cut beam having a through hole and an insertion hole in the biaxial direction is used as a means for intersecting the cut beam on the same plane. It is disclosed that a crossing jig having a through hole into which a crossing girder can be inserted is used as a means for intersecting a crossing girder on the same plane.

実開昭５５−２１３０８号公報(第１図)Japanese Utility Model Publication No. 55-21308 (Fig. 1) 実開平６−７６４４４号公報(図１,図２)Japanese Utility Model Laid-Open No. 6-76444 (FIGS. 1 and 2) 特開２０００−２９７４３２号公報(図１〜図５)Japanese Unexamined Patent Publication No. 2000-297432 (FIGS. 1 to 5)

従来の切梁の交差構造には次のような問題点がある。
＜１＞切梁を上下に重ねて交差する立体交差構造では，切梁の段差の影響を受けて相対向する腹起材に上下の高低差が生じる。
そのため、入り隅部に火打材を組み付ける際に、腹起材に上下の高低差があるため火打材の組み付け構造が複雑となる。
＜２＞特許文献２に記載の平面交差継手は、切梁の断面形状と寸法に合わせて製作した専用資材となるため、切梁の交差コストが高くつく。
＜３＞特許文献３に記載の交差用治具も、交差する切梁の断面寸法に合わせた専用治具となるため、切梁の交差コストが高くつく。
＜４＞従来の切梁の平面交差構造は交差角度が９０度に規定してあるため、交差角度が９０度以外の場合は継手や治具が特注品となって、製作コストか高くつく。
＜５＞特許文献２，３に記載の平面交差構造は、平面交差継手や交差用治具を設けた一方の切梁が、他方の切梁を跨いだ交差構造となる。
平面交差継手や交差用治具の両端に切梁材を連結してなる一方の切梁は、継手や治具を経由して軸力を伝達することとなり、法規(労働安全衛生規則第３７１条２号「圧縮材(火打ちを除く。)の継手は、突合せ継手とすること。」)で規定する継手(突合せ継手)の要件を満たさない。 The conventional cross beam cross structure has the following problems.
<1> In a three-dimensional crossing structure in which kerfs are vertically overlapped and intersect with each other, a difference in height between the uprising members facing each other is generated due to the step difference of the stile.
Therefore, when assembling the hitting material in the entering corner, the assembling structure of the hitting material becomes complicated because there is a difference in height between the uprising members.
<2> Since the plane crossing joint described in Patent Document 2 is a dedicated material manufactured according to the cross-sectional shape and size of the cross beam, the crossing cost of the cross beam is high.
<3> The intersecting jig described in Patent Document 3 is also a dedicated jig adapted to the cross-sectional dimensions of the intersecting beams, so that the intersecting cost of the beams is high.
<4> Since the crossing angle of the conventional cross beam structure is defined as 90 degrees, if the crossing angle is other than 90 degrees, the joints and jigs are custom-made and the manufacturing cost is high.
<5> The plane intersecting structure described in Patent Documents 2 and 3 is an intersecting structure in which one cross beam provided with a plane cross joint or a crossing jig straddles the other cross beam.
One of the cross beams, which is formed by connecting the cross beam members to both ends of the plane intersection joint and the jig for intersection, transmits the axial force through the joint and the jig, and the laws (Occupational Safety and Health Regulations, Article 371). No. 2 "Joints for compressed materials (excluding blowout) should be butt joints.") does not meet the requirements for joints (butt joints).

本考案は以上の点に鑑みてなされたもので、その目的とするところは、法規(労働安全衛生規則第３７１条２号)で規定する継手要件を満たしつつ、市販の鋼材を用いて低コストで切梁を同一平面上で交差できる、切梁の交差構造を提供することにある。 The present invention has been made in view of the above points, and its purpose is to use a commercially available steel material at low cost while satisfying the joint requirements stipulated by laws and regulations (Occupational Safety and Health Regulations Article 371 No. 2). The purpose of the present invention is to provide an intersecting structure of beams which allows the beams to intersect on the same plane.

本考案は、山留壁の腹起材の間に同一平面上で交差して架設する切梁の交差構造であって、同一平面上で交差する橋絡切梁と貫挿切梁とを有し、前記橋絡切梁は所定の間隔を隔てて同軸線上に対向して配置した複数の分割切梁と、該複数の分割切梁の対向部の上下両側の間に跨りボルトで連結した一対の接続補強材とを有し、前記分割切梁の左右の端板と上下に位置する接続補強材とで囲まれた貫挿孔を通じて前記橋絡切梁および貫挿切梁が同一平面上で交差し、前記橋絡切梁の貫挿孔内に介装した間詰材を通じて隣り合う分割切梁間に突合せ継手を形成すると共に、前記一対の接続補強材を通じて隣り合う分割切梁間に重ね継手を形成した。
本考案の他の形態において、前記貫挿孔内に位置する貫挿切梁の両側に拡幅機能を有する一対の間詰材を介装してある。
本考案の他の形態において、前記間詰材が定形ピースと、拡幅機能を有する裏込ブロックとの重合体により構成する。
本考案の他の形態において、前記貫挿孔の横幅寸法が貫挿切梁の横幅寸法より大きい寸法関係にある。 The present invention is an intersecting structure of crossbeams which are erected so as to intersect on the same plane between the uprising members of the mountain retaining wall. The bridging cross-beam is a plurality of split cross-beams that are arranged to face each other on a coaxial line at a predetermined interval, and a pair of straddle bolts are connected between the upper and lower sides of the facing portions of the plurality of split cross-beams. And a connecting reinforcing member, and through the through holes surrounded by the left and right end plates of the split beam and the connecting reinforcing members located above and below, the bridge cutting beam and the through cutting beam are on the same plane. A butt joint is formed between the adjacent split beams through the stuffing material that intersects and is inserted in the through hole of the bridge cross beam, and a lap joint is formed between the adjacent split beams through the pair of connection reinforcing members. Formed.
In another embodiment of the present invention, a pair of interleaving members having a widening function are provided on both sides of the through-cutting beam located in the through-hole.
In another embodiment of the present invention, the filling material is composed of a polymer of a fixed piece and a backing block having a widening function.
In another aspect of the present invention, the lateral width dimension of the through hole is larger than the lateral width dimension of the through beam.

本考案は少なくとも何れか１つの効果を得ることができる。
＜１＞橋絡切梁において、間詰材を通じた突合せ継手と、一対の接続補強材を通じた重ね継手の２つのルートを経て軸力を伝達することができる。
したがって、法規(労働安全衛生規則第３７１条２号)で規定する継手要件を満たしつつ、Ｈ形鋼等の市販の鋼材を用いて低コストで切梁を同一平面上で交差することができる。
＜２＞貫挿孔の横幅間隔を貫挿切梁の横幅より大きい寸法関係にすることで、両切梁の交差角度を９０度以外の任意の角度で交差させるとこができる。
＜３＞接続補強材には特注品ではなく、Ｈ形鋼等の市販の鋼材を使用するので、切梁を経済的に交差できる。
＜４＞切梁の交差作業を短時間のうちに簡単な作業で行うことができる。
＜５＞橋絡切梁と貫挿切梁とを同一平面上で交差できるので、各切梁に対応した腹起材の高低差がなくなり、火打材を隅部に架設する入り隅部の構造を簡略化できる。 The present invention can obtain at least one effect.
<1> In the bridge cross beam, the axial force can be transmitted through two routes of a butt joint through a filling material and a lap joint through a pair of connection reinforcing materials.
Therefore, while satisfying the joint requirements stipulated by laws and regulations (Occupational Safety and Health Regulations, Article 371 No. 2), it is possible to use a commercially available steel material such as H-section steel to intersect the cross beams on the same plane at low cost.
<2> By making the lateral width interval of the through holes larger than the lateral width of the through slit beams, it is possible to intersect the cross beams at any angle other than 90 degrees.
<3> Since a commercially available steel material such as an H-shaped steel is used for the connection reinforcing material, not a custom-made product, the beams can be crossed economically.
<4> It is possible to perform the crossing work of the cross beams by a simple work in a short time.
<5> Since the bridge cross-beam and the cross-cut cross-beam can intersect on the same plane, there is no difference in the height of the uprising material corresponding to each cross-beam, and the structure of the entry corner where the fire-flooding material is installed in the corner Can be simplified.

本考案に係る切梁の交差構造の斜視図1 is a perspective view of a cross beam cross structure according to the present invention. 切梁の交差部の側面図Side view of crossing of beams 切梁の交差方法の説明図Illustration of how to cross the beams 橋絡切梁における軸力の伝達継手の説明図Explanatory drawing of transmission joint of axial force in bridge cross beam

以下図面を参照しながら本考案について詳しく説明する。 Hereinafter, the present invention will be described in detail with reference to the drawings.

＜１＞切梁の交差構造
図１，２を参照して説明すると、本考案の切梁の交差構造は、橋絡切梁１０Ａと、橋絡切梁１０Ａと同一平面上で交差する貫挿切梁１０Ｂと、両切梁１０Ａ，１０Ｂの交差部の隙間をなくして両切梁１０Ａ，１０Ｂの相互間で荷重の伝達を可能とする一対の間詰材２０，２０とを有する。
両切梁１０Ａ，１０Ｂはウェブ１０ａの両側に一対のフランジ１０ｂを形成したＨ形鋼からなり、その端面には端板１０ｃが一体に固着してある。 <1> Cross Beam Crossing Structure Referring to FIGS. 1 and 2, the cross beam crossing structure of the present invention has a bridge crossing beam 10A and a crossing beam crossing the bridge crossing beam 10A on the same plane. It has a sill beam 10B and a pair of filling materials 20, 20 for eliminating the gap at the intersection of the sill beams 10A, 10B and allowing the load to be transmitted between the sill beams 10A, 10B.
Both the trusses 10A and 10B are made of H-shaped steel having a pair of flanges 10b formed on both sides of the web 10a, and end plates 10c are integrally fixed to the end faces thereof.

＜２＞橋絡切梁
橋絡切梁１０Ａは貫挿切梁１０Ｂと交差して配置する切梁材で、所定の間隔を隔てて同軸線上に配置した複数の分割切梁１１，１１と、隣り合う分割切梁１１，１１の対向部の上下両側に配置した一対の接続補強材１２，１２とを有する。 <2> Bridge cross-cut beam The bridge cross-cut beam 10A is a cross-beam member that is arranged so as to intersect the through-cut cross beam 10B, and a plurality of divided cut beams 11 and 11 that are arranged on a coaxial line at predetermined intervals. It has a pair of connecting reinforcing members 12 and 12 arranged on the upper and lower sides of the facing portions of the adjacent split beam members 11 and 11, respectively.

＜２．１＞分割切梁
隣り合う分割切梁１１，１１は貫挿切梁１０Ｂを同一平面上で交差するため、所定の間隔を隔てて位置する。
貫挿切梁１０Ｂのフランジ幅をＬ_１とした場合、隣り合う分割切梁１１，１１の対向端部間の間隔である貫挿孔Ｓの横幅Ｌ_２は、貫挿切梁１０Ｂのフランジ幅である横幅Ｌ_１より僅かに広い寸法関係にある。
貫挿孔Ｓの横幅間隔Ｌ_２を貫挿切梁１０Ｂの横幅Ｌ_１より大きい寸法関係にしたのは、両切梁１０Ａ，１０Ｂの交差角度を９０度以外の任意の角度で交差させるためである。 <2.1> Divided Cut Beams Since the divided cut beams 11 and 11 adjacent to each other intersect the through cut beam 10B on the same plane, they are positioned at a predetermined interval.
When the flange width of the through beam 10B is L ₁ , the lateral width L ₂ of the through hole S, which is the distance between the opposing ends of the adjacent divided beam 11, 11, is the flange width of the through beam 10B. Which is slightly wider than the lateral width L ₁ .
The lateral width interval L _{2 of the} through holes S is set to be larger than the lateral width L ₁ of the through cut beam 10B in order to intersect the cross beams 10A and 10B at any angle other than 90 degrees. is there.

＜２．２＞接続補強材
一対の接続補強材１２，１２は隣り合う分割切梁１１，１１に作用する軸力を伝達するためのＨ形鋼からなる剛性部材であり、隣り合う分割切梁１１，１１のフランジ１０ｂ間に跨って配置し、重合するフランジ１０ｂ間を複数の締結ボルト１３で固定する。
接続補強材１２は特注品ではなく、各切梁１０Ａ，１０Ｂと同様にＨ形鋼等の市販の鋼材を使用できると共に、分割切梁１１との連結も市販の締結ボルト１３を使用して連結するこができる。 <2.2> Connection Reinforcing Material The pair of connection reinforcing materials 12 and 12 are rigid members made of H-shaped steel for transmitting an axial force acting on the adjacent split cutting beams 11 and 11, and are adjacent to each other. The flanges 10b of 11 and 11 are arranged so as to straddle each other, and the overlapping flanges 10b are fixed by a plurality of fastening bolts 13.
The connection reinforcing member 12 is not a custom-made product, and a commercially available steel material such as an H-shaped steel can be used similarly to each of the beams 10A and 10B, and the connection with the split beam 11 is also performed by using a commercially available fastening bolt 13. You can

図面では接続補強材１２の断面寸法（フランジ幅、ウェブ高さ）が分割切梁１１，１１と同一寸法の形態について示しているが、接続補強材１２の断面寸法は分割切梁１１と比べて小さくてしてもよいし、或いは大きくてもよい。 In the drawings, the cross-sectional dimensions (flange width, web height) of the connection reinforcing member 12 are shown to be the same as those of the split beam 11, 11, but the cross-sectional dimension of the connection reinforcing member 12 is larger than that of the split beam 11. It may be small or large.

＜２．３＞貫挿孔
各分割切梁１１，１１の上下面に一対の接続補強材１２，１２をボルト連結により固定することで、分割切梁１１，１１の左右の端板１０ｃ，１０ｃと、上下に位置する接続補強材１２，１２のフランジ１０ｂ，１０ｂとで囲まれて貫挿孔Ｓを形成する。 <2.3> Penetration hole By fixing a pair of connecting reinforcements 12 and 12 to the upper and lower surfaces of each divided truss 11, 11 by bolt connection, left and right end plates 10c and 10c of the divided truss 11, 11 are formed. And the flanges 10b and 10b of the connection reinforcing members 12 and 12 located above and below, respectively, to form the through hole S.

＜２．４＞橋絡切梁の構成材
既述したように、橋絡切梁１０Ａを構成する複数の分割切梁１１と一対の接続補強材１２，１２にＨ形鋼等の市販の鋼材を適用できるので、橋絡切梁１０Ａを低コストに製作できる。 <2.4> Constituent material of bridge cross-section beam As described above, a plurality of split cut-beams 11 constituting the cross-link cross-beam 10A and a pair of connection reinforcing members 12, 12 are commercially available steel materials such as H-section steel. Therefore, the bridge crossing beam 10A can be manufactured at low cost.

＜３＞間詰材
一対の間詰材２０，２０は、貫挿孔Ｓ内における分割切梁１１の端板１０ｃと貫挿切梁１０Ｂのウェブ１０ａとの間に配置する間隔調整部材であると共に、隣り合う分割切梁１１，１１間の軸力伝達部材でもある。 <3> Packing material The pair of packing materials 20, 20 is a gap adjusting member arranged between the end plate 10c of the split cutting beam 11 and the web 10a of the cutting cutting beam 10B in the through hole S. At the same time, it is also an axial force transmitting member between the adjacent divided slit beams 11, 11.

本例では定形ピース２１と、拡幅機能を有する裏込ブロック２２とにより間詰材２０を構成する形態について説明するが、定形ピース２１を省略して裏込ブロック２２のみで間詰材２０を構成するようにしてもよい。 In this example, a form is described in which the fixed piece 21 and the backing block 22 having a widening function form the filling material 20, but the fixed piece 21 is omitted and the filling material 20 is formed only by the backing block 22. You may do so.

＜３．１＞定形スペーサ
定形スペーサ２１は、圧縮変形が不能な鋼材、樹脂等の硬質材からなり、その断面形は角柱形、平板形等を呈する。
定形スペーサ２１の板厚は全体が均一厚にかぎらず、板厚が一方から他方へ向けて漸減する断面楔形でもよい。 <3.1> Regular Spacer The regular spacer 21 is made of a hard material such as steel or resin that cannot be compressed and deformed, and its cross-sectional shape is prismatic, flat, or the like.
The plate thickness of the fixed spacer 21 is not limited to a uniform plate thickness, but may be a wedge-shaped cross section in which the plate thickness gradually decreases from one side to the other side.

＜３．２＞裏込ブロック
裏込ブロック２２は外部操作によって全体の厚さ調整を可能な公知のユニブロックやブルブロック等を適用できる。 <3.2> Backing Block 22 As the backing block 22, a well-known uniblock, bullblock, or the like that can adjust the overall thickness by an external operation can be applied.

［切梁の交差架設方法］
つぎに橋絡切梁１０Ａと貫挿切梁１０Ｂの交差架設方法について説明する。
本例では橋絡切梁１０Ａを先行架設した後に貫挿切梁１０Ｂを架設して交差する形態について説明するが、その逆でも両切梁１０Ａ，１０Ｂを交差して架設できる。 [Cross beam cross construction method]
Next, a method of crossing the bridge cross-beams 10A and the through-cut beams 10B will be described.
In this example, a configuration will be described in which the bridge cross-beams 10A are installed in advance and then the through-cut cross-beams 10B are installed, and the cross-cut beams 10A and 10B can also be installed in reverse.

＜１＞橋絡切梁の先行架設（図３）
相対向する一対の腹起材（図示せず）の間に橋絡切梁１０Ａを先行して横向きに架設する。
この際、橋絡切梁１０Ａの上位の接続補強材１２を取り外して、貫挿孔Ｓの上口を開放しておく。 <1> Prior construction of bridge cross-beams (Fig. 3)
Between the pair of uprising members (not shown) facing each other, the bridge crossing beams 10A are installed in a horizontal direction in advance.
At this time, the upper connection reinforcing member 12 of the bridge cross-beam 10A is removed, and the upper opening of the through hole S is opened.

＜２＞貫挿切梁の交差配置（図３）
つぎに橋絡切梁１０Ａの真上に貫挿切梁１０Ｂを交差して配置し、水平を保ったまま貫挿切梁１０Ｂを橋絡切梁１０Ａの貫挿孔Ｓ内に落とし込む。
後して架設した貫挿切梁１０Ｂの両端を相対向する一対の腹起材に支持させる。 <2> Crossover arrangement of cross-cut beams (Fig. 3)
Next, the through-cutting beam 10B is arranged right above the bridge-over cutting beam 10A so as to be crossed, and the horizontal cross-cutting beam 10B is dropped into the through-hole S of the bridge-over cutting beam 10A.
Both ends of the through-cutting beam 10B which is installed later are supported by a pair of uprising members facing each other.

隣り合う分割切梁１１，１１の上面間に上位の接続補強材１２を組み付けて貫挿孔Ｓの上口を閉鎖する。
このように、貫挿切梁１０Ｂを貫挿切梁１０Ｂの貫挿孔Ｓ内に収容して貫挿孔Ｓを封鎖するだけの簡単な作業で以て、両切梁１０Ａ，１０Ｂを同一平面上で交差して架設することができる。 An upper connection reinforcing member 12 is assembled between the upper surfaces of the adjacent split beam members 11 to close the upper opening of the through hole S.
In this way, both cutting beams 10A and 10B are formed on the same plane by a simple operation of accommodating the through cutting beam 10B in the through hole S of the through cutting beam 10B and closing the through hole S. Can be crossed and erected above.

＜２．１＞切梁へのプレロード。
必要に応じて各切梁１０Ａ，１０Ｂにプレロードを導入する。
両切梁１０Ａ，１０Ｂの交差部が拘束されていないので、各切梁１０Ａ，１０Ｂに対して個別にプレロードを付与できる。 <2.1> Pre-loading on the girder.
A preload is introduced into each of the beams 10A and 10B as required.
Since the intersecting portion of the both cutting beams 10A and 10B is not constrained, a preload can be individually applied to each of the cutting beams 10A and 10B.

＜２．２＞切梁の交差角度
橋絡切梁１０Ａの貫挿孔Ｓの横方向の間隔Ｌ_２が貫挿切梁１０Ｂのフランジ幅Ｌ_１より広い寸法関係にある。
したがって、貫挿孔Ｓ内で貫挿切梁１０Ｂを９０度で交差することは勿論のこと、現場の状況に応じて両切梁１０Ａ，１０Ｂを９０度以外の角度でも交差できる。 <2.2> Intersection Angle of Cross Beam The distance L _{2 in} the lateral direction between the through holes S of the bridge cross beam 10A is wider than the flange width L ₁ of the cross through beam 10B.
Therefore, it goes without saying that the through beam 10B intersects at 90 degrees in the through hole S, and the both beams 10A and 10B can also intersect at an angle other than 90 degrees depending on the situation of the site.

＜３＞切梁の交差部の間詰処理（図２）
橋絡切梁１０Ａの軸力伝達性能を高めるため、両切梁１０Ａ，１０Ｂの交差部に一対の間詰材２０，２０を設置する。
具体的に説明すると、貫挿切梁１０Ｂを貫挿して二分した各貫挿孔Ｓ内に収縮状態で間詰材２０を介装する。
つぎに二分した各貫挿孔Ｓ内で間詰材２０を拡幅させて、両間詰材２０の左右の両側面を分割切梁１１の端板１０ｃと貫挿切梁１０Ｂのウェブ１０ａの側面に圧接する。
間詰材２０を拡幅するのは、橋絡切梁１０Ａを構成する分割切梁１１，１１の端板１０ｃ，１０ｃ間を突合せ継手とするためである。 <3> Clogging process at the intersection of the beams (Fig. 2)
In order to improve the axial force transmission performance of the bridge crossing beam 10A, a pair of space fillers 20, 20 are installed at the intersections of both crossing beams 10A, 10B.
More specifically, the filling material 20 is interposed in a contracted state in each of the through holes S that are formed by inserting the through beam 10B into two parts.
Next, the packing material 20 is widened in each of the two through-holes S, and the left and right side surfaces of both the packing materials 20 are divided into end plates 10c of the split cutting beams 11 and side surfaces of the webs 10a of the through cutting beams 10B. Press against.
The width of the filling material 20 is widened in order to make a butt joint between the end plates 10c, 10c of the divided slit beams 11, 11 constituting the bridge cross-sill beam 10A.

＜３．１＞９０度以外の角度で交差させた場合
両切梁１０Ａ，１０Ｂを９０度以外の角度で交差させた場合には、貫挿切梁１０Ｂのウェブ１０ａが分割切梁１１の端板１０ｃと非平行となる。
このような場合は、断面楔形の定形スペーサ２１等を使用して間詰めする。 <3.1> When crossed at an angle other than 90 degrees When both cut beams 10A and 10B are crossed at an angle other than 90 degrees, the web 10a of the through cut beam 10B is an end of the divided cut beam 11. It is not parallel to the plate 10c.
In such a case, the fixed spacers 21 having a wedge-shaped cross section are used for the space reduction.

＜３．２＞橋絡切梁の軸力伝達ルート（図４）
橋絡切梁１０Ａでは、隣り合う分割切梁１１，１１の間に間詰材２０，２０を介装したことで、分割切梁１１，１１の間が突合せ継手Ｒ_１となる。
さらに、間隔を隔てた分割切梁１１，１１の間に一対の接続補強材１２，１２を連結したことで、分割切梁１１，１１の間が重ね継手Ｒ_２にもなっている。
このように橋絡切梁１０Ａは、交差部に間詰材２０，２０を間詰めすることで、法規(労働安全衛生規則第３７１条２号)の要件である突合せ継手Ｒ_１を含むことになる。
橋絡切梁１０Ａにおいては、突合せ継手Ｒ_１と重ね継手Ｒ_２の２つのルートを経て軸力を伝達することができる。 <3.2> Axial force transmission route of bridge cross-section beam (Fig. 4)
In the bridge crossing girder 10</b>A, the space between the adjacent splitting girders 11 and 11 is the stuffing material 20, 20 to form a butt joint R ₁ between the splitting girders 11, 11.
Further, by connecting the pair of connecting reinforcing members 12 and 12 between the divided slit beams 11 and 11 spaced apart from each other, the space between the divided slit beams 11 and 11 also serves as a lap joint R ₂ .
In this way, the bridge crossing beam 10A includes the butt joint R ₁ which is a requirement of the regulation (Occupational Safety and Health Regulations Article 371 No. 2) by packing the filling materials 20, 20 at the intersection. Become.
In the bridge crossing beam 10A, the axial force can be transmitted via the two routes of the butt joint R ₁ and the lap joint R ₂ .

＜３．３＞貫挿切梁の軸力伝達ルート
貫挿切梁１０Ｂでは、連続した一本ものの鋼材あり間に継手が介在しないので、軸力は貫挿切梁１０Ｂの軸心を通じて伝達する。 <3.3> Axial Force Transmission Route of Through-Cut Beams Since the through-beams 10B have no joint between the continuous steel materials, the axial force is transmitted through the axis of the through-beams 10B. ..

＜３．４＞切梁の交差作業性
以上説明したように、同一平面上で交差させた橋絡切梁１０Ａと貫挿切梁１０Ｂの交差部を間詰めするだけの簡単な作業で済むので、各切梁１０Ａ，１０Ｂの架設に要する時間と労力を大幅に削減できる。
さらに切梁交差用に特注継手や特注治具を用いずに同一平面上で交差できるので、交差する切梁１０Ａ，１０Ｂのコストアップ化を回避できる。 <3.4> Cross-cutting workability of cutting beams As described above, it is possible to perform a simple work by just shortening the intersections of the bridge cross-cutting beams 10A and the through-cutting cross-beams 10B that intersect on the same plane. The time and labor required for constructing each of the beams 10A and 10B can be greatly reduced.
Further, since it is possible to intersect on the same plane without using a custom-made joint or a custom-made jig for crossing the beams, it is possible to avoid the cost increase of the intersecting beams 10A and 10B.

＜４＞火打材の架設
橋絡切梁１０Ａと貫挿切梁１０Ｂを同一平面上で交差できるので、各切梁１０Ａ，１０Ｂに対応した腹起材を高低差がなく同一平面上に取り付けできる。
したがって、火打材を隅部に架設する場合は、同一平面上の腹起材に跨って水平に架設できるので、入り隅部の構造を簡略化できる。 <4> Construction of fired material Since the bridge cross-cut beams 10A and the through-cut cross beams 10B can intersect on the same plane, the uprising members corresponding to the respective cut beams 10A and 10B can be mounted on the same plane without a difference in height. ..
Therefore, when the hitting material is installed in the corner, it can be installed horizontally across the uprising material on the same plane, so that the structure of the entering corner can be simplified.

１０Ａ・・・橋絡切梁
１０Ｂ・・・貫挿切梁
１０ａ・・・ウェブ
１０ｂ・・・フランジ
１０ｃ・・・端板
１１・・・・橋絡切梁を構成する分割切梁
１２・・・・橋絡切梁を構成する接続補強材
１３・・・・連結ボルト
２０・・・・間詰材
２１・・・・定形ピース
２２・・・・裏込ブロック 10A... Bridge crossing beam 10B... Penetration cutting beam 10a... Web 10b... Flange 10c... End plate 11... ..Connecting reinforcements 13 that form bridge cross-beams....Connecting bolts 20...

Claims

山留壁の腹起材の間に同一平面上で交差して架設する切梁の交差構造であって、
同一平面上で交差する橋絡切梁と貫挿切梁とを有し、
前記橋絡切梁は所定の間隔を隔てて同軸線上に対向して配置した複数の分割切梁と、該複数の分割切梁の対向部の上下両側の間に跨りボルトで連結した一対の接続補強材とを有し、
前記分割切梁の左右の端板と上下に位置する接続補強材とで囲まれた貫挿孔を通じて前記橋絡切梁および貫挿切梁が同一平面上で交差し、
前記橋絡切梁の貫挿孔内に介装した間詰材を通じて隣り合う分割切梁間に突合せ継手を形成すると共に、
前記一対の接続補強材を通じて隣り合う分割切梁間に重ね継手を形成したことを特徴とする、
切梁の交差構造。 An intersecting structure of beams that is installed on the same plane crossing between the uprising materials of the Yamadome wall,
It has a bridge cross-cut beam and a through-cut cross beam that intersect on the same plane,
The bridging cross-beam is a plurality of split cross-beams arranged on a coaxial line so as to face each other at a predetermined interval, and a pair of connections that are connected by straddling bolts between the upper and lower sides of facing portions of the plurality of split cross-beams. Having a reinforcing material,
The bridge bridging beam and the through beam are crossed on the same plane through the through holes surrounded by the left and right end plates of the split beam and the connection reinforcing members located above and below,
While forming a butt joint between the adjacent split beams through the filling material interposed in the through hole of the bridge crossing beam,
A lap joint is formed between the adjacent split beam members through the pair of connection reinforcing members,
Cross beam structure.

前記一対の接続補強材を構成する鋼材がＨ形鋼であることを特徴とする、請求項１に記載の切梁の交差構造。 The cross beam structure according to claim 1, wherein the steel material forming the pair of connection reinforcing members is an H-shaped steel.

前記貫挿孔内に位置する貫挿切梁の両側に拡幅機能を有する一対の間詰材を介装したことを特徴とする、請求項１に記載の切梁の交差構造。 The cross beam cross structure according to claim 1, wherein a pair of filling materials having a widening function are provided on both sides of the through cut beam located in the through hole.

前記間詰材が定形ピースと、拡幅機能を有する裏込ブロックとの重合体により構成することを特徴とする、請求項１または３に記載の切梁の交差構造。 The cross beam cross structure according to claim 1 or 3, wherein the filling material is made of a polymer of a regular piece and a backing block having a widening function.

前記貫挿孔の横幅寸法が貫挿切梁の横幅寸法より大きい寸法関係にあることを特徴とする、請求項１に記載の切梁の交差構造。 The cross beam crossing structure according to claim 1, wherein a lateral width dimension of the through hole is larger than a lateral width dimension of the through cut beam.