JP2017186794A - Vertical connection construction method and restraining member - Google Patents

Vertical connection construction method and restraining member Download PDF

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JP2017186794A
JP2017186794A JP2016076252A JP2016076252A JP2017186794A JP 2017186794 A JP2017186794 A JP 2017186794A JP 2016076252 A JP2016076252 A JP 2016076252A JP 2016076252 A JP2016076252 A JP 2016076252A JP 2017186794 A JP2017186794 A JP 2017186794A
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steel
steel sheet
sheet pile
joint
protrusion
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JP6601298B2 (en
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雅司 北濱
Masashi Kitahama
雅司 北濱
嵩 籾山
Takashi Momiyama
嵩 籾山
妙中 真治
Shinji Myonaka
真治 妙中
和孝 乙志
Kazutaka Otoshi
和孝 乙志
毅 川西
Takeshi Kawanishi
毅 川西
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Nippon Steel Corp
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Nippon Steel Corp
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Abstract

PROBLEM TO BE SOLVED: To provide a vertical connection construction method capable of mutually easily and quickly connecting a plurality of steel members in the material axial direction, while restraining the movement in the wall width direction of the steel members.SOLUTION: A vertical connection construction method of applying the present invention comprises a vertical connection process of connecting a plurality of steel members of a predetermined cross-sectional shape in the material axial direction Y and connecting an end part in the axial direction Y of mutually opposed respective materials by a plurality of steel sheet piles 3 and 4. In the vertical connection process, a succeeding steel sheet pile 4 of becoming a succeeding steel member is moved in the wall width direction Z to a preceding steel sheet pile 3 of becoming a preceding steel member, and while positioning a succeeding side end part 40 of becoming an end part of the succeeding steel sheet pile 4 and a preceding side end part 30 of becoming an end part of the preceding steel sheet pile 3 in the wall width direction Z, the succeeding side end part 40 and the preceding side end part 30 are connected in the material axial direction Y, and the movement in the wall width direction Z of the succeeding steel sheet pile 4 is restrained by a restraining member 1.SELECTED DRAWING: Figure 10

Description

本発明は、所定の断面形状の複数の鋼製部材を材軸方向に連結させる縦継施工方法、及び、複数の鋼矢板を材軸方向に連結させるための拘束部材に関する。   The present invention relates to a cascade construction method for connecting a plurality of steel members having a predetermined cross-sectional shape in the material axis direction, and a restraining member for connecting a plurality of steel sheet piles in the material axis direction.

従来から、縦継ぎ部の止水性や剛性、耐力を確保しつつ、安価かつ簡便に施工して工期やコストを削減できるものとして、例えば、特許文献1に開示された鋼矢板の継手構造が提案されている。また、H形鋼同士の端部を突合せ接合するときに高い曲げ耐力等を発揮できるものとして、例えば、特許文献2に開示された接合構造が提案されている。   Conventionally, for example, a steel sheet pile joint structure disclosed in Patent Document 1 has been proposed as an inexpensive and simple construction that can reduce construction time and cost while ensuring water-stopping, rigidity, and proof strength of the longitudinal joint. Has been. Further, for example, a joint structure disclosed in Patent Document 2 has been proposed as a material capable of exhibiting a high bending strength when the end portions of H-shaped steels are butt-joined.

特許文献1に開示された鋼矢板の継手構造は、下側鋼矢板の上端縁と上側鋼矢板の下端縁とが当接された状態で、下側鋼矢板の上端部におけるウェブ及びフランジから突出した下側継手部材と、上側鋼矢板の下端部におけるウェブ及びフランジから突出した上側継手部材とが、複数のボルトによりボルト結合されていることを特徴とする。   The steel sheet pile joint structure disclosed in Patent Document 1 protrudes from the web and flange at the upper end of the lower steel sheet pile, with the upper edge of the lower steel sheet pile and the lower edge of the upper steel sheet pile in contact with each other. The lower joint member and the upper joint member protruding from the web and the flange at the lower end of the upper steel sheet pile are bolted by a plurality of bolts.

特許文献2に開示された接合構造は、H形鋼のウェブとフランジとの両面に接するL字形断面の柱状部材が、両方のH形鋼の端部に跨ってウェブの表裏各面に配設されて、柱状部材とせん断補強板とが重なり合った状態で、柱状部材とH形鋼のウェブとせん断補強板とが、複数のボルトによりボルト結合されていることを特徴とする。   In the joint structure disclosed in Patent Document 2, columnar members having L-shaped cross sections that contact both sides of the H-shaped steel web and the flange are disposed on the front and back surfaces of the web across the ends of both H-shaped steels. The columnar member, the H-shaped steel web, and the shear reinforcing plate are bolted by a plurality of bolts in a state where the columnar member and the shear reinforcing plate overlap each other.

特開2011−38288号公報JP 2011-38288 A 特開2007−291682号公報JP 2007-291682 A

ここで、複数の鋼矢板を現場溶接で縦継ぎさせると、近年の大断面化が進む鋼矢板では、鋼矢板の断面積が大きく溶接量が多くなるため、縦継部1箇所あたりの溶接時間が長く、縦継箇所が多い場合に工期が長期化する。また、複数の鋼矢板を高力ボルト摩擦接合で縦継ぎさせると、十分な強度を確保するために多数の高力ボルトを接合させる必要があるため、縦継部1箇所あたりの接合時間が長く、縦継箇所が多い場合に工期が長期化する。   Here, when a plurality of steel sheet piles are cascade-welded by on-site welding, the steel sheet piles that have recently become larger in cross-section have a large cross-sectional area of the steel sheet piles and a large amount of welding. Is longer and the construction period is longer when there are many connecting points. In addition, when a plurality of steel sheet piles are cascaded by high-strength bolt friction joining, it is necessary to join a large number of high-strength bolts in order to ensure sufficient strength. The construction period is prolonged when there are many cascaded parts.

このため、縦継部1箇所あたりの溶接時間、接合時間を短縮させるために、特許文献1に開示された鋼矢板の継手構造が提案されており、また、複数のH形鋼を縦継ぎするものとして、特許文献2に開示された接合構造が提案されている。しかし、特許文献1に開示された鋼矢板の継手構造、及び、特許文献2に開示された接合構造の何れにも、これらを縦継ぎするときに壁幅方向の移動を拘束するための拘束手段が何ら開示されていない。   For this reason, in order to shorten the welding time and joining time per one location of the longitudinal joint, a steel sheet pile joint structure disclosed in Patent Document 1 has been proposed, and a plurality of H-section steels are cascaded. As a thing, the junction structure indicated by patent documents 2 is proposed. However, the restraint means for restraining the movement in the wall width direction when connecting the steel sheet pile joint structure disclosed in Patent Document 1 and the joint structure disclosed in Patent Document 2 in the longitudinal direction. There is no disclosure.

そこで、本発明は、上述した問題点に鑑みて案出されたものであって、その目的とするところは、鋼製部材の壁幅方向の移動を拘束しながら、複数の鋼製部材を材軸方向で互いに簡易、迅速に連結できる縦継施工方法及び拘束部材を提供することにある。   Therefore, the present invention has been devised in view of the above-described problems, and the object of the present invention is to provide a plurality of steel members while restraining the movement of the steel members in the wall width direction. An object of the present invention is to provide a cascade construction method and a restraining member that can be easily and quickly connected to each other in the axial direction.

第1発明に係る縦継施工方法は、所定の断面形状の複数の鋼製部材を材軸方向に連結させる縦継施工方法であって、複数の鋼製部材で互いに対向する各々の材軸方向の端部を連結させる縦継工程を備え、前記縦継工程では、先行の鋼製部材となる先行鋼製部材に対して後行の鋼製部材となる後行鋼製部材を壁幅方向に移動させて、前記後行鋼製部材の端部となる後行側端部と前記先行鋼製部材の端部となる先行側端部とを壁幅方向に位置合わせさせながら、前記後行側端部と前記先行側端部とを材軸方向に連結させるとともに、前記後行鋼製部材の壁幅方向の移動を拘束部材で拘束することを特徴とする。   The longitudinal construction method according to the first invention is a longitudinal construction method for connecting a plurality of steel members having a predetermined cross-sectional shape in the material axial direction, and each material axial direction facing each other by the plurality of steel members. A connecting step for connecting the ends of the steel member, and in the connecting step, a succeeding steel member that is a succeeding steel member with respect to a preceding steel member that is a preceding steel member is arranged in the wall width direction. While moving, the trailing side end that is the end of the trailing steel member and the leading side end that is the end of the leading steel member are aligned in the wall width direction, the trailing side The end portion and the preceding side end portion are connected in the material axis direction, and the movement of the succeeding steel member in the wall width direction is restrained by a restraining member.

第2発明に係る縦継施工方法は、第1発明において、前記先行鋼製部材及び前記後行鋼製部材に鋼矢板が用いられるとともに、前記縦継工程では、前記先行鋼製部材となる先行鋼矢板の継手部に前記拘束部材となる継手状部材を嵌合させてから、前記後行鋼製部材となる後行鋼矢板の継手部を前記継手状部材に嵌合させて、前記後行鋼製部材の壁幅方向の移動を前記継手状部材で拘束することを特徴とする。   The cascade construction method according to the second invention is the first invention, wherein steel sheet piles are used for the preceding steel member and the succeeding steel member, and in the cascade step, the preceding steel member becomes the preceding steel member. After fitting a joint-like member serving as the restraining member to the joint portion of the steel sheet pile, fitting the joint portion of the subsequent steel sheet pile serving as the following steel member to the joint-like member, the following The movement of the steel member in the wall width direction is restricted by the joint-like member.

第3発明に係る縦継施工方法は、第1発明又は第2発明において、前記縦継工程では、前記後行側端部と前記先行側端部とを壁幅方向に位置合わせさせて、前記先行側端部及び前記後行側端部の何れか一方又は両方に形成された母材側突起部に、前記後行側端部から前記先行側端部まで架設される連結部材に形成された連結側突起部が係止した状態として、前記後行側端部と前記先行側端部とを材軸方向に連結させることを特徴とする。   In the first or second invention, the cascade construction method according to the third aspect of the invention is such that, in the cascade process, the trailing side end and the leading side end are aligned in the wall width direction, Formed on a base member-side protrusion formed on one or both of the leading side end and the trailing side end, and a connecting member constructed from the trailing side end to the leading side end. In a state where the connecting side protrusion is locked, the trailing side end and the leading side end are connected in the material axis direction.

第4発明に係る縦継施工方法は、第3発明において、前記縦継工程では、前記連結側突起部と前記母材側突起部とが互いに係止された状態で取り囲まれる枠部材、及び、前記連結部材から前記母材側突起部まで架設される板部材の何れか一方又は両方が、前記拘束部材として前記連結部材に設けられることを特徴とする。   The cascade construction method according to a fourth aspect of the invention is the third aspect of the present invention, in the third aspect of the invention, in the longitudinal connection step, the frame member that is surrounded in a state where the connection side projection and the base material side projection are locked together, and Any one or both of the plate members erected from the connecting member to the base material side protrusion are provided as the restraining member on the connecting member.

第5発明に係る縦継施工方法は、第3発明又は第4発明において、前記縦継工程では、前記連結部材から連続して前記母材側突起部まで貫通させた軸部材、及び、前記連結側突起部と前記母材側突起部とに形成された切欠溝に嵌装させた閂部材の何れか一方又は両方が、前記拘束部材として前記連結部材に設けられることを特徴とする。   In the third or fourth invention, the longitudinal construction method according to the fifth aspect of the invention is the axial member that is continuously penetrated from the connecting member to the base material side protrusion in the longitudinal connection step, and the connection One or both of the eaves members fitted in the notch grooves formed in the side protrusions and the base material side protrusions are provided in the connecting member as the restraining member.

第6発明に係る拘束部材は、複数の鋼矢板を材軸方向に連結させるための拘束部材であって、先行の鋼矢板となる先行鋼矢板の継手部及び後行の鋼矢板となる後行鋼矢板の継手部に嵌合される継手状部材を備え、前記継手状部材は、前記後行鋼矢板の端部となる後行側端部と前記先行鋼矢板の端部となる先行側端部とが材軸方向で互いに対向した状態で、前記先行鋼矢板の継手部から前記後行鋼矢板の継手部まで連続して設けられることを特徴とする。   The restraint member concerning the 6th invention is a restraint member for connecting a plurality of steel sheet piles in the direction of the material axis, and it becomes the joint part of the preceding steel sheet pile as the preceding steel sheet pile and the subsequent steel sheet pile. A joint-like member fitted to a joint portion of the steel sheet pile is provided, and the joint-like member is a trailing side end portion serving as an end portion of the trailing steel sheet pile and a leading side end serving as an end portion of the preceding steel sheet pile. It is characterized by being provided continuously from the joint part of the preceding steel sheet pile to the joint part of the subsequent steel sheet pile in a state where the parts face each other in the material axis direction.

第1発明〜第6発明によれば、後行鋼矢板の壁幅方向の移動を拘束部材で拘束することができるため、隣接する連結鋼製部材の継手部まで後行鋼矢板の継手部を円滑に嵌合させて、複数の鋼製部材を材軸方向で互いに簡易、迅速に連結させることが可能となる。   According to 1st invention-6th invention, since the movement of the wall width direction of a subsequent steel sheet pile can be restrained with a restraint member, the joint part of a subsequent steel sheet pile is connected to the joint part of an adjacent connection steel member. A plurality of steel members can be easily and quickly connected to each other in the material axis direction by smoothly fitting.

特に、第2発明、第4発明〜第6発明によれば、隣接する連結鋼製部材の継手部まで後行鋼矢板の継手部を嵌合させた後に、継手状部材又は枠部材等の拘束部材を撤去して再利用することができるため、拘束部材として設けられる継手状部材等の材料コストの増大を抑制することが可能となる。   In particular, according to the second invention, the fourth invention to the sixth invention, after fitting the joint portion of the subsequent steel sheet pile to the joint portion of the adjacent connected steel member, the restraint of the joint-like member or the frame member or the like. Since the member can be removed and reused, it is possible to suppress an increase in material cost of a joint-like member provided as a restraining member.

特に、第3発明によれば、複数の鋼製部材を連結部材で連結することで、複数の鋼製部材が連結される箇所で、十分な曲げ剛性を確保して構造的弱点とならないものとして、複数の鋼製部材が材軸方向に連結された連結鋼製部材全体の曲げ性能の低下を回避することが可能となる。   In particular, according to the third invention, by connecting a plurality of steel members with a connecting member, it is assumed that a sufficient bending rigidity is ensured at a location where the plurality of steel members are connected and does not become a structural weakness. It is possible to avoid a decrease in the bending performance of the entire connected steel member in which a plurality of steel members are connected in the material axis direction.

本発明を適用した縦継施工方法で構築される鋼製壁を示す斜視図である。It is a perspective view which shows the steel wall constructed | assembled with the cascade construction method to which this invention is applied. 本発明を適用した縦継施工方法で連結される複数の鋼矢板の端部を示す正面図である。It is a front view which shows the edge part of the some steel sheet pile connected with the cascade construction method to which this invention is applied. 本発明を適用した縦継施工方法で連結されるハット形鋼矢板を示す平面図である。It is a top view which shows the hat-shaped steel sheet pile connected with the cascade construction method to which this invention is applied. 本発明を適用した縦継施工方法で連結されるU形鋼矢板を示す平面図である。It is a top view which shows the U-shaped steel sheet pile connected with the cascade construction method to which this invention is applied. 本発明を適用した縦継施工方法で連結されるZ形鋼矢板を示す平面図である。It is a top view which shows the Z-shaped steel sheet pile connected with the cascade construction method to which this invention is applied. 本発明を適用した縦継施工方法でR部が形成されて互いに係止される連結側突起部及び母材側突起部を示す側面図である。It is a side view which shows the connection side projection part and base material side projection part which R part is formed and locked mutually by the cascade construction method to which this invention is applied. 本発明を適用した縦継施工方法でR部が形成されて互いに係止される連結側突起部及び母材側突起部の変形例を示す側面図である。It is a side view which shows the modification of the connection side projection part and base material side projection part which R part is formed and locked mutually by the cascade construction method to which this invention is applied. 本発明を適用した縦継施工方法でR部が形成されない連結側突起部及び母材側突起部を示す側面図である。It is a side view which shows the connection side protrusion part and base material side protrusion part in which R part is not formed with the cascade construction method to which this invention is applied. (a)は、本発明を適用した縦継施工方法の縦継工程で先行鋼矢板を地盤内に打設する過程を示す斜視図であり、(b)は、先行鋼矢板の継手部に継手状部材を嵌合させる過程を示す斜視図である。(A) is a perspective view which shows the process which drives a preceding steel sheet pile in the ground in the cascade process of the cascade construction method to which this invention is applied, (b) is a joint to the joint part of a preceding steel sheet pile. It is a perspective view which shows the process in which a cylindrical member is fitted. (a)は、本発明を適用した縦継施工方法の縦継工程で後行鋼矢板を壁幅方向に移動させる過程を示す斜視図であり、(b)は、後行側端部と先行側端部とを壁幅方向に位置合わせさせる過程を示す斜視図である。(A) is a perspective view which shows the process of moving a follower steel sheet pile to a wall width direction at the cascade process of the cascade construction method to which this invention is applied, (b) is a succeeding side edge part and preceding. It is a perspective view which shows the process in which a side edge part is aligned to a wall width direction. (a)は、本発明を適用した縦継施工方法の縦継工程で先行鋼矢板から後行鋼矢板まで連続して継手部に嵌合された継手状部材を示す斜視図であり、(b)は、後行鋼矢板の壁幅方向の移動を継手状部材で拘束した状態を示す斜視図である。(A) is a perspective view which shows the joint-like member continuously fitted by the joint part from the preceding steel sheet pile to the succeeding steel sheet pile in the cascade process of the cascade construction method to which this invention is applied, (b ) Is a perspective view showing a state in which the movement of the trailing steel sheet pile in the wall width direction is restrained by a joint-like member. (a)は、本発明を適用した縦継施工方法の打設工程で先行鋼矢板とともに後行鋼矢板を地盤内にさらに打設する過程を示す斜視図であり、(b)は、後行鋼矢板の上端側で継手状部材を引き抜いて撤去する過程を示す斜視図である。(A) is a perspective view which shows the process in which the subsequent steel sheet pile is further cast in the ground with the preceding steel sheet pile in the casting process of the cascade construction method to which the present invention is applied, and (b) is the subsequent process. It is a perspective view which shows the process in which a joint-shaped member is pulled out and removed by the upper end side of a steel sheet pile. 本発明を適用した拘束部材となる継手状部材を示す平面図である。It is a top view which shows the joint-shaped member used as the restraint member to which this invention is applied. 本発明を適用した縦継施工方法で後行鋼矢板及び先行鋼矢板に設けられた母材側突起部に連結側突起部が係止される状態を示す斜視図である。It is a perspective view which shows the state by which a connection side protrusion part is latched by the base material side protrusion part provided in the subsequent steel sheet pile and the preceding steel sheet pile by the cascade construction method to which this invention is applied. (a)は、本発明を適用した縦継施工方法でスライド移動する連結部材を示す斜視図であり、(b)は、連結部材に取り付けられる枠部材を示す斜視図であり、(c)は、枠部材の横枠部で挟み込んだ状態を示す斜視図である。(A) is a perspective view which shows the connection member which slide-moves by the cascade construction method to which this invention is applied, (b) is a perspective view which shows the frame member attached to a connection member, (c) is It is a perspective view which shows the state pinched | interposed by the horizontal frame part of the frame member. (a)は、本発明を適用した縦継施工方法でスライド移動する連結部材を示す斜視図であり、(b)は、連結部材に取り付けられる板部材を示す斜視図であり、(c)は、板部材が架設された状態を示す斜視図である。(A) is a perspective view which shows the connection member which slide-moves by the cascade construction method to which this invention is applied, (b) is a perspective view which shows the board member attached to a connection member, (c) is It is a perspective view which shows the state by which the plate member was constructed. (a)は、本発明を適用した縦継施工方法でスライド移動する連結部材を示す斜視図であり、(b)は、連結部材に取り付けられる軸部材を示す斜視図であり、(c)は、軸部材を貫通させた状態を示す斜視図である。(A) is a perspective view which shows the connection member slid by the cascade construction method to which this invention is applied, (b) is a perspective view which shows the shaft member attached to a connection member, (c). It is a perspective view which shows the state which penetrated the shaft member. (a)は、本発明を適用した縦継施工方法でスライド移動する連結部材を示す斜視図であり、(b)は、連結部材に取り付けられる閂部材を示す斜視図であり、(c)は、切欠溝に嵌装された閂部材を示す斜視図である。(A) is a perspective view which shows the connection member which slide-moves with the cascade construction method to which this invention is applied, (b) is a perspective view which shows the collar member attached to a connection member, (c) is It is a perspective view which shows the eaves member fitted by the notch groove. 本発明を適用した鋼製部材の縦継構造で鋼製部材として用いられるH形鋼、角形鋼管及び円形鋼管を示す平面図である。It is a top view which shows the H-section steel, square steel pipe, and round steel pipe which are used as a steel member by the cascade structure of the steel member to which this invention is applied.

以下、本発明を適用した縦継施工方法及び拘束部材1を実施するための形態について、図面を参照しながら詳細に説明する。   DESCRIPTION OF EMBODIMENTS Hereinafter, embodiments for carrying out a cascade construction method and a restraining member 1 to which the present invention is applied will be described in detail with reference to the drawings.

本発明を適用した縦継施工方法は、図1に示すように、例えば、長尺の鋼矢板2を施工できない狭隘地等の現場において、地盤内8の下方及び上方に埋め込まれる短尺の鋼矢板2を、複数の鋼製部材として材軸方向Yで互いに連結させるために用いられる。   As shown in FIG. 1, the longitudinal construction method to which the present invention is applied is a short steel sheet pile embedded below and above the ground 8 in a site such as a narrow area where the long steel sheet pile 2 cannot be constructed. 2 are used as a plurality of steel members to be connected to each other in the material axial direction Y.

本発明を適用した縦継施工方法では、複数の鋼製部材が材軸方向Yに連結されることで、長尺の連結鋼製部材70が形成される。本発明を適用した縦継施工方法では、材軸方向Yに連結された複数の鋼製部材を1個の長尺の連結鋼製部材70として、複数の連結鋼製部材70を壁幅方向Zに連設させることで、鋼製壁7が地盤内8等に構築される。   In the cascade construction method to which the present invention is applied, a plurality of steel members are connected in the material axis direction Y, whereby a long connected steel member 70 is formed. In the cascade construction method to which the present invention is applied, a plurality of steel members connected in the material axis direction Y are used as one long connected steel member 70, and the plurality of connected steel members 70 are arranged in the wall width direction Z. Thus, the steel wall 7 is constructed in the ground 8 or the like.

本発明を適用した縦継施工方法では、地盤内8に埋め込まれる複数の短尺の鋼矢板2等のうち、例えば、地盤内8に先行して埋め込まれる先行の鋼製部材を先行鋼製部材とするとともに、地盤内8に後行で埋め込まれる後行の鋼製部材を後行鋼製部材とする。   In the cascade construction method to which the present invention is applied, among the plurality of short steel sheet piles 2 and the like embedded in the ground 8, for example, a preceding steel member embedded prior to the ground 8 is defined as a preceding steel member. At the same time, the subsequent steel member embedded in the ground 8 is used as the subsequent steel member.

本発明を適用した縦継施工方法では、図2に示すように、先行鋼製部材の上端側に配置される材軸方向Yの端部が先行側端部30となるとともに、後行鋼製部材の下端側に配置される材軸方向Yの端部が後行側端部40となる。   In the cascade construction method to which the present invention is applied, as shown in FIG. 2, the end portion in the material axial direction Y arranged on the upper end side of the preceding steel member becomes the leading end portion 30, and is made of subsequent steel. The end in the material axis direction Y arranged on the lower end side of the member becomes the trailing side end 40.

本発明を適用した縦継施工方法では、複数の鋼製部材における各々の材軸方向Yの端部を、先行鋼製部材の先行側端部30及び後行鋼製部材の後行側端部40として、材軸方向Yで互いに対向させて連結させるものとなる。   In the cascade construction method to which the present invention is applied, the end portions in the material axis direction Y of the plurality of steel members are set to the leading end portion 30 of the leading steel member and the trailing end portion of the trailing steel member. As 40, they are connected to face each other in the material axis direction Y.

本発明を適用した縦継施工方法では、先行鋼製部材及び後行鋼製部材として鋼矢板2が用いられる場合に、主に、ハット形鋼矢板21等の鋼矢板2が用いられて、先行鋼製部材が先行鋼矢板3となるとともに、後行鋼製部材が後行鋼矢板4となる。   In the cascade construction method to which the present invention is applied, when the steel sheet pile 2 is used as the preceding steel member and the subsequent steel member, the steel sheet pile 2 such as the hat-shaped steel sheet pile 21 is mainly used. The steel member becomes the preceding steel sheet pile 3 and the succeeding steel member becomes the succeeding steel sheet pile 4.

本発明を適用した縦継施工方法では、例えば、後行側端部40から先行側端部30まで鋼製等の連結部材5が架設される。このとき、本発明を適用した縦継施工方法では、後行側端部40と先行側端部30とに跨って、連結部材5が材軸方向Yに連続して架設されることで、複数の鋼矢板2の各々の端部が材軸方向Yに連結される。   In the cascade construction method to which the present invention is applied, for example, the connecting member 5 made of steel or the like is constructed from the trailing side end 40 to the leading side end 30. At this time, in the cascade construction method to which the present invention is applied, a plurality of connecting members 5 are continuously installed in the material axis direction Y across the trailing side end 40 and the leading side end 30, thereby Each end of the steel sheet pile 2 is connected in the material axis direction Y.

鋼矢板2は、図3に示すように、ハット形鋼矢板21が用いられる場合に、フランジ部2a、一対のウェブ部2b、一対のアーム部2c、及び、一対の継手部2dが形成されて、フランジ部2a及び一対のウェブ部2bに取り囲まれて溝部Sが形成される。   As shown in FIG. 3, when the hat-shaped steel sheet pile 21 is used, the steel sheet pile 2 is formed with a flange portion 2a, a pair of web portions 2b, a pair of arm portions 2c, and a pair of joint portions 2d. The groove portion S is formed by being surrounded by the flange portion 2a and the pair of web portions 2b.

鋼矢板2は、壁幅方向Zに延びてフランジ部2aが形成されるとともに、壁幅方向Zでフランジ部2aの両端の各々から、各々のウェブ部2bが傾斜させて形成される。鋼矢板2は、各々のウェブ部2bの片端から、各々のアーム部2cが形成されるとともに、各々のアーム部2cの先端に、各々の継手部2dが形成される。   The steel sheet pile 2 extends in the wall width direction Z to form a flange portion 2a, and the web portion 2b is inclined from each end of the flange portion 2a in the wall width direction Z. As for the steel sheet pile 2, each arm part 2c is formed from one end of each web part 2b, and each joint part 2d is formed in the front-end | tip of each arm part 2c.

鋼矢板2は、フランジ部2a、ウェブ部2b及びアーム部2cの各々の側面が略平坦状に形成されることで、略平坦状に形成された平坦面20を有する。鋼矢板2は、壁幅方向Zに並べられた複数の鋼矢板2が、各々の継手部2dを互いに嵌合させて連結されることで、壁幅方向Zに連設されるものとなる。   The steel sheet pile 2 has a flat surface 20 formed in a substantially flat shape by forming the side surfaces of the flange portion 2a, the web portion 2b and the arm portion 2c in a substantially flat shape. The steel sheet pile 2 is continuously provided in the wall width direction Z by connecting a plurality of steel sheet piles 2 arranged in the wall width direction Z by fitting the respective joint portions 2d to each other.

鋼矢板2は、フランジ部2aの平坦面20で連結部材5が架設される。また、鋼矢板2は、ウェブ部2b及びアーム部2c何れか一方又は両方の平坦面20で連結部材5が架設されてもよい。鋼矢板2は、ハット形鋼矢板21が用いられるだけでなく、例えば、図4、図5に示すように、U形鋼矢板22又はZ形鋼矢板23等が用いられてもよい。   As for the steel sheet pile 2, the connection member 5 is constructed by the flat surface 20 of the flange part 2a. Further, the steel sheet pile 2 may have the connecting member 5 installed on the flat surface 20 of either one or both of the web portion 2b and the arm portion 2c. As the steel sheet pile 2, not only the hat-shaped steel sheet pile 21 but also a U-shaped steel sheet pile 22 or a Z-shaped steel sheet pile 23 may be used as shown in FIGS. 4 and 5, for example.

鋼矢板2は、図4に示すように、U形鋼矢板22が用いられる場合に、フランジ部2a、一対のウェブ部2b、及び、一対の継手部2dが形成されて、フランジ部2a及びウェブ部2bの側面が平坦面20となる。また、鋼矢板2は、図5に示すように、Z形鋼矢板23が用いられる場合に、ウェブ部2b、一対のアーム部2c、及び、一対の継手部2dが形成されて、ウェブ部2b及びアーム部2cの側面が平坦面20となる。   When the U-shaped steel sheet pile 22 is used, the steel sheet pile 2 is formed with a flange portion 2a, a pair of web portions 2b, and a pair of joint portions 2d, and the flange portion 2a and the web, as shown in FIG. The side surface of the portion 2b becomes the flat surface 20. Moreover, as shown in FIG. 5, when the Z-shaped steel sheet pile 23 is used, the steel sheet pile 2 is formed with a web portion 2b, a pair of arm portions 2c, and a pair of joint portions 2d, and the web portion 2b. And the side surface of the arm part 2 c becomes the flat surface 20.

連結部材5は、図6に示すように、鋼板等が用いられた平板部51に、平板部51から材軸直交方向Xに突出させた連結側突起部50が形成される。連結部材5は、壁幅方向Zに連続して延びる連結側突起部50が、熱間圧延又は冷間圧延の圧延加工等により平板部51と一体的に形成されるものとなる。   As shown in FIG. 6, the connection member 5 is formed with a connection-side protrusion 50 that protrudes from the flat plate portion 51 in the material axis orthogonal direction X on the flat plate portion 51 using a steel plate or the like. In the connection member 5, the connection side protrusion 50 continuously extending in the wall width direction Z is formed integrally with the flat plate portion 51 by hot rolling or cold rolling.

連結部材5は、これに限らず、厚板鋼板を切削加工等とすることで、平板部51と連結側突起部50とが機械加工により一体的に形成されてもよい。また、連結部材5は、平鋼等が連結側突起部50として用いられて、平板部51の側面に平鋼等を溶接接合することで、平板部51と連結側突起部50とが一体的に形成されてもよい。   The connecting member 5 is not limited to this, and the flat plate portion 51 and the connecting-side protruding portion 50 may be integrally formed by machining by using a thick steel plate as a cutting process or the like. Moreover, the flat member etc. are used for the connection member 5 as the connection side protrusion part 50, and the flat plate part 51 and the connection side protrusion part 50 are integrated by welding the flat steel etc. to the side surface of the flat plate part 51. May be formed.

連結部材5は、後行側端部40から先行側端部30まで材軸方向Yに連続させて平板部51が形成されて、平板部51から後行側端部40及び先行側端部30の何れか一方又は両方に向けて突出させて、1又は複数の連結側突起部50が形成される。   In the connecting member 5, a flat plate portion 51 is formed continuously in the material axis direction Y from the trailing side end 40 to the leading side end 30, and the trailing side end 40 and the leading side end 30 are formed from the flat plate portion 51. One or a plurality of connection-side protrusions 50 are formed by projecting toward one or both of the above.

連結側突起部50は、材軸方向Yで平板部51の上部及び下部の何れか一方又は両方に形成されて、後行側端部40及び先行側端部30の何れか一方又は両方に形成された母材側突起部55に、材軸方向Yで互いに係止される。   The connecting side protrusion 50 is formed on either or both of the upper and lower portions of the flat plate portion 51 in the material axis direction Y, and is formed on either or both of the trailing side end 40 and the leading side end 30. The base material side protrusions 55 are engaged with each other in the material axis direction Y.

連結側突起部50は、例えば、後行側端部40及び先行側端部30の何れか一方のみに母材側突起部55が設けられる場合に、後行側端部40及び先行側端部30の何れか一方で、母材側突起部55に材軸方向Yに係止される。   For example, when the base-side protrusion 55 is provided only in one of the trailing-side end 40 and the leading-side end 30, the connecting-side protruding part 50 includes the trailing-side end 40 and the leading-side end. Any one of 30 is locked to the base material side protrusion 55 in the material axis direction Y.

平板部51は、略矩形状等に形成されて、複数の鋼矢板2の各々の平坦面20に沿って架設される。平板部51は、後行側端部40及び先行側端部30の何れか一方のみに母材側突起部55が設けられる場合に、後行側端部40及び先行側端部30の何れか他方に、連結側突起部50が形成されない部分を当接させて直接溶接等により取り付けられる。   The flat plate portion 51 is formed in a substantially rectangular shape or the like, and is erected along each flat surface 20 of the plurality of steel sheet piles 2. The flat plate portion 51 is either the trailing side end portion 40 or the leading side end portion 30 when the base material side projection 55 is provided only in either the trailing side end portion 40 or the leading side end portion 30. On the other hand, the portion where the connecting protrusion 50 is not formed is brought into contact with and directly attached by welding or the like.

母材側突起部55は、後行側端部40及び先行側端部30の何れか一方又は両方に母材鋼板54等が溶接等により取り付けられて、母材鋼板54から連結部材5の平板部51に向けて材軸直交方向Xに突出させて形成される。母材側突起部55は、壁幅方向Zに連続して延びる母材側突起部55が、熱間圧延又は冷間圧延の圧延加工等により母材鋼板54と一体的に形成されるものとなる。   The base material side projection 55 is formed by attaching a base material steel plate 54 or the like to one or both of the trailing side end 40 and the leading side end 30 by welding or the like. It is formed so as to protrude in the material axis orthogonal direction X toward the portion 51. The base material side protrusion 55 is formed such that the base material side protrusion 55 continuously extending in the wall width direction Z is integrally formed with the base material steel plate 54 by hot rolling or cold rolling. Become.

母材鋼板54は、これに限らず、厚板鋼板を切削加工等とすることで、母材鋼板54と母材側突起部55とが機械加工により一体的に形成されてもよい。また、母材鋼板54は、平鋼等が母材側突起部55として用いられて、母材鋼板54の側面に平鋼等を溶接接合することで、母材鋼板54と母材側突起部55とが一体的に形成されてもよい。   The base material steel plate 54 is not limited to this, and the base material steel plate 54 and the base material side protrusion 55 may be integrally formed by machining by using a thick steel plate as a cutting process or the like. Further, the base steel plate 54 is made of flat steel or the like as the base metal side protrusion 55, and the base steel plate 54 and the base metal side protrusion are joined by welding and joining the flat steel or the like to the side surface of the base steel plate 54. 55 may be integrally formed.

母材側突起部55は、後行側端部40及び先行側端部30の何れか一方又は両方に母材鋼板54が取り付けられることで設けられる。母材側突起部55は、これに限らず、図7(a)、図7(b)に示すように、後行側端部40及び先行側端部30の何れか一方に、母材側突起部55となる平鋼等が、直接溶接等により取り付けられて設けられてもよい。   The base material side protrusion 55 is provided by attaching the base material steel plate 54 to one or both of the trailing side end 40 and the leading side end 30. The base material side protrusion 55 is not limited to this, and as shown in FIG. 7A and FIG. 7B, either the back side end 40 or the leading side end 30 has a base material side. A flat steel or the like that becomes the protrusion 55 may be attached by direct welding or the like.

母材側突起部55は、図6、図7(a)に示すように、後行側端部40及び先行側端部30の何れか一方のみに設けられる。母材側突起部55は、これに限らず、図7(b)、図7(c)に示すように、後行側端部40及び先行側端部30に設けられて、後行側端部40及び先行側端部30の両方で、連結側突起部50が材軸方向Yに係止されてもよい。   As shown in FIGS. 6 and 7A, the base material side protrusion 55 is provided only on one of the trailing side end 40 and the leading side end 30. The base-material-side protrusion 55 is not limited to this, and is provided at the trailing-side end 40 and the leading-side end 30 as shown in FIGS. The connection-side protrusion 50 may be locked in the material axis direction Y at both the portion 40 and the leading end 30.

連結側突起部50及び母材側突起部55は、特に、熱間圧延又は冷間圧延の圧延加工等により形成される場合に、図6、図7に示すように、容易な押出加工により加工性を向上させるものとして、各々の角部にR部が形成されることが望ましい。   The connection protrusion 50 and the base protrusion 55 are formed by an easy extrusion process as shown in FIGS. 6 and 7, particularly when formed by hot rolling or cold rolling. In order to improve the properties, it is desirable that an R portion is formed at each corner.

連結側突起部50及び母材側突起部55は、材軸直交方向Xでテーパ状に傾斜して形成されて、例えば、図6(a)に示すように、材軸方向Yで対向する各々の片側面が、互いに略平行に形成されることが望ましい。また、連結側突起部50及び母材側突起部55は、図6(b)、図6(c)に示すように、断面略台形状に形成されてもよい。   The connection side protrusion 50 and the base material side protrusion 55 are formed to be inclined in a taper shape in the material axis orthogonal direction X, for example, each facing in the material axis direction Y as shown in FIG. It is desirable that the one side surfaces of these are formed substantially parallel to each other. Moreover, the connection side protrusion part 50 and the base material side protrusion part 55 may be formed in cross-sectional substantially trapezoid shape, as shown in FIG.6 (b) and FIG.6 (c).

さらに、連結側突起部50及び母材側突起部55は、図8(a)に示すように、各々の角部にR部が形成されることなく、断面略台形状に形成されてもよく、また、図8(b)に示すように、断面略T形状に形成されてもよい。そして、連結側突起部50及び母材側突起部55は、図8(c)に示すように、断面略矩形状に形成されてもよい。   Further, as shown in FIG. 8A, the connection-side protrusion 50 and the base-material-side protrusion 55 may be formed in a substantially trapezoidal cross section without forming an R portion at each corner. Further, as shown in FIG. 8B, the cross section may be formed in a substantially T shape. And the connection side protrusion part 50 and the base material side protrusion part 55 may be formed in cross-sectional substantially rectangular shape, as shown in FIG.8 (c).

連結側突起部50及び母材側突起部55は、各々の片端面が互いに当接されて材軸方向Yに係止されることで、複数の鋼矢板2に作用する引張力に抵抗するものとなり、複数の鋼矢板2が材軸方向Yで互いに離間しないように拘束される。   The connection-side protruding portion 50 and the base material-side protruding portion 55 are each of which resists the tensile force acting on the plurality of steel sheet piles 2 by being brought into contact with each other and being locked in the material axial direction Y. Thus, the plurality of steel sheet piles 2 are restrained so as not to be separated from each other in the material axis direction Y.

連結側突起部50及び母材側突起部55は、図6、図7、図8(a)に示すように、テーパ状に傾斜した片側面が互いに当接されて、又は、図8(b)に示すように、断面略T形状に形成されて、材軸直交方向Xで互いに係止される。このとき、連結側突起部50及び母材側突起部55は、連結部材5を材軸直交方向Xに離間しないように拘束する。   As shown in FIGS. 6, 7, and 8 (a), the connection-side protrusion 50 and the base-material-side protrusion 55 are in contact with each other on one side inclined in a tapered shape, or in FIG. ), The cross sections are formed in a substantially T shape and are locked to each other in the material axis orthogonal direction X. At this time, the connection side protrusion 50 and the base material side protrusion 55 restrain the connection member 5 so as not to be separated in the material axis orthogonal direction X.

連結側突起部50及び母材側突起部55は、図8(c)に示すように、断面略矩形状に形成される場合に、材軸直交方向Xで互いに係止され難くなる。このとき、連結部材5は、特に、ボルト等の軸部材62を材軸直交方向Xに貫通させて、締結ナット、溶接ナット又は雌ネジ加工部に螺合させることで、材軸直交方向Xに拘束されるものとなる。   As shown in FIG. 8C, the connection-side protrusion 50 and the base-material-side protrusion 55 are less likely to be locked together in the material axis orthogonal direction X when formed in a substantially rectangular cross section. At this time, in particular, the connecting member 5 penetrates the shaft member 62 such as a bolt in the material axis orthogonal direction X and is screwed to a fastening nut, a weld nut or a female screw processed portion, thereby Be bound.

本発明を適用した縦継施工方法は、図9〜図12に示すように、複数の鋼製部材で互いに対向する各々の材軸方向Yの端部を連結させる縦継工程を備え、必要に応じて、互いに連結された複数の鋼製部材を地盤内8に打設する打設工程をさらに備える。   The cascade construction method to which the present invention is applied, as shown in FIG. 9 to FIG. 12, includes a cascade process in which ends of each material axial direction Y facing each other with a plurality of steel members are connected. Accordingly, it further includes a placing step of placing a plurality of steel members connected to each other in the ground 8.

本発明を適用した縦継施工方法は、複数の鋼製部材を縦継工程で材軸方向Yに連結することで連結鋼製部材70を形成して、この連結鋼製部材70を打設工程で地盤内8に打設する。そして、本発明を適用した縦継施工方法は、複数の連結鋼製部材70を壁幅方向Zに順次打設して連設させることで、鋼製壁7が地盤内8に構築されるものとなる。   In the cascade construction method to which the present invention is applied, a connection steel member 70 is formed by connecting a plurality of steel members in the material axis direction Y in a cascade process, and the connection steel member 70 is placed in the casting process. To place 8 in the ground. In the cascade construction method to which the present invention is applied, the steel wall 7 is constructed in the ground 8 by sequentially placing and connecting a plurality of connecting steel members 70 in the wall width direction Z. It becomes.

本発明を適用した縦継施工方法は、第1実施形態において、図13に示すように、先行鋼矢板3の継手部2d及び後行鋼矢板4の継手部2dに嵌合される継手状部材6が、複数の鋼矢板2を材軸方向Yに連結させるための拘束部材1として用いられる。   In the first embodiment, the cascade construction method to which the present invention is applied is a joint-like member fitted in the joint portion 2d of the preceding steel sheet pile 3 and the joint portion 2d of the subsequent steel sheet pile 4 as shown in FIG. 6 is used as the restraining member 1 for connecting the plurality of steel sheet piles 2 in the material axis direction Y.

縦継工程では、最初に、図9(a)に示すように、壁幅方向Zに隣接する連結鋼製部材70が打設された状態で、先行鋼製部材となる先行鋼矢板3を地盤内8に打設する。このとき、先行鋼矢板3の継手部2dは、隣接する連結鋼製部材70の継手部2dと互いに嵌合された状態で、先行鋼矢板3がバイブロハンマ等で地盤内8に打設される。   In the cascade connection process, first, as shown in FIG. 9A, the preceding steel sheet pile 3 to be the preceding steel member is grounded in the state where the connecting steel member 70 adjacent to the wall width direction Z is driven. Place in 8 of them. At this time, the preceding steel sheet pile 3 is driven into the ground 8 with a vibro hammer or the like in a state where the joint portion 2d of the preceding steel sheet pile 3 is fitted to the joint portion 2d of the adjacent connecting steel member 70.

縦継工程では、次に、図9(b)に示すように、連結鋼製部材70の上端部70aから上方に、先行鋼矢板3の先行側端部30を突出させた部分で、先行鋼矢板3の継手部2dに継手状部材6を嵌合させる。このとき、継手状部材6は、図13に示すように、鋼矢板2の継手部2dと略同一形状の爪部6aが、鋼矢板2の継手部2dに嵌合される。   Next, in the cascade connection step, as shown in FIG. 9 (b), the preceding steel is the portion where the leading end 30 of the preceding steel sheet pile 3 protrudes upward from the upper end 70 a of the connecting steel member 70. The joint-like member 6 is fitted into the joint portion 2d of the sheet pile 3. At this time, as shown in FIG. 13, in the joint-like member 6, a claw part 6 a having substantially the same shape as the joint part 2 d of the steel sheet pile 2 is fitted into the joint part 2 d of the steel sheet pile 2.

ここで、継手状部材6は、例えば、爪部6aから壁幅方向Zに延伸させて延伸部6bが形成されて、爪部6aと延伸部6bとが材軸方向Yに連続して形成される。継手状部材6は、必要に応じて、略平板状等の挟持板6cと延伸部6bとが、架設部6dで連結されることで、爪部6aから材軸直交方向Xに離間させた位置に挟持板6cが配置される。   Here, the joint-like member 6 is, for example, extended from the claw portion 6a in the wall width direction Z to form the extended portion 6b, and the claw portion 6a and the extended portion 6b are formed continuously in the material axis direction Y. The The joint-like member 6 is located at a position spaced apart from the claw portion 6a in the material axis orthogonal direction X by connecting the extending plate 6d to the substantially flat sandwiching plate 6c and the extending portion 6b as necessary. The sandwiching plate 6c is disposed on the surface.

継手状部材6は、鋼矢板2の継手部2dに爪部6aを嵌合させることで、挟持板6cと爪部6aとの間に鋼矢板2の継手部2dが配置される。継手状部材6は、必要に応じて、挟持板6cから鋼矢板2の継手部2dまで延びるボルト等の軸部材62を締め込むことで、この軸部材62の先端と爪部6aとで鋼矢板2の継手部2dが挟持されて固定される。   In the joint-like member 6, the joint portion 2d of the steel sheet pile 2 is disposed between the sandwiching plate 6c and the claw portion 6a by fitting the claw portion 6a to the joint portion 2d of the steel sheet pile 2. The joint-like member 6 is a steel sheet pile between the tip of the shaft member 62 and the claw portion 6a by tightening a shaft member 62 such as a bolt extending from the clamping plate 6c to the joint portion 2d of the steel sheet pile 2 as necessary. Two joint portions 2d are clamped and fixed.

縦継工程では、次に、図10(a)に示すように、先行鋼矢板3の継手部2dに継手状部材6を嵌合させた状態で、後行鋼製部材となる後行鋼矢板4を壁幅方向Zに移動させる。このとき、後行鋼矢板4は、後行側端部40に連結部材5が取り付けられて、連結部材5を先行側端部30の母材側突起部55に向けて壁幅方向Zに移動させるものとなる。   Next, in the cascade step, as shown in FIG. 10 (a), the succeeding steel sheet pile that becomes the succeeding steel member in a state in which the joint-like member 6 is fitted to the joint portion 2d of the preceding steel sheet pile 3. 4 is moved in the wall width direction Z. At this time, in the trailing steel sheet pile 4, the connecting member 5 is attached to the trailing side end 40, and the connecting member 5 is moved in the wall width direction Z toward the base material side protrusion 55 of the leading side end 30. To be

縦継工程では、次に、連結部材5が壁幅方向Zに移動することで、複数の母材側突起部55の間に連結側突起部50がスライド挿入されて、図10(b)に示すように、後行側端部40と先行側端部30とを壁幅方向Zに位置合わせさせる。このとき、連結部材5は、図6〜図8に示すように、連結側突起部50及び母材側突起部55がテーパ状に傾斜等して形成されることで、連結側突起部50と母材側突起部55とが材軸直交方向Xで互いに係止されて、連結部材5が材軸直交方向Xに拘束される。   Next, in the cascading step, the connecting member 5 moves in the wall width direction Z, so that the connecting side protrusions 50 are slid between the plurality of base material side protrusions 55, as shown in FIG. As shown, the trailing end 40 and the leading end 30 are aligned in the wall width direction Z. At this time, as shown in FIGS. 6 to 8, the connecting member 5 is formed such that the connecting side protruding portion 50 and the base material side protruding portion 55 are inclined in a taper shape, etc. The base material side protrusions 55 are locked together in the material axis orthogonal direction X, and the connecting member 5 is restrained in the material axis orthogonal direction X.

縦継工程では、次に、図11(a)に示すように、後行側端部40と先行側端部30とが材軸方向Yで互いに対向した状態で、先行鋼矢板3の継手部2dに継手状部材6を嵌合させたまま上方にスライド移動させる。このとき、継手状部材6は、先行鋼矢板3の継手部2dから後行鋼矢板4の継手部2dまで連続して嵌合させた状態で設けられて、必要に応じて、図13に示す軸部材62で材軸方向Yに移動しないように固定される。   Next, in the cascade connection step, as shown in FIG. 11A, the joint portion of the preceding steel sheet pile 3 with the trailing side end portion 40 and the leading side end portion 30 facing each other in the material axis direction Y. The joint-like member 6 is slid upward while being fitted to 2d. At this time, the joint-like member 6 is provided in a state of being continuously fitted from the joint portion 2d of the preceding steel sheet pile 3 to the joint portion 2d of the subsequent steel sheet pile 4, and is shown in FIG. 13 as necessary. The shaft member 62 is fixed so as not to move in the material axis direction Y.

縦継工程では、図10(b)に示すように、後行側端部40と先行側端部30とを壁幅方向Zに位置合わせさせながら、後行側端部40と先行側端部30とを連結部材5で材軸方向Yに連結させる。このとき、後行鋼矢板4は、後行側端部40と先行側端部30とが連結されるとともに、図11(a)に示すように、継手状部材6が先行鋼矢板3から後行鋼矢板4まで連続して継手部2dに嵌合されることで、壁幅方向Zの移動が拘束される。   In the cascade process, as shown in FIG. 10B, the trailing side end 40 and the leading side end 30 are aligned with the trailing side end 40 and the leading side end 30 in the wall width direction Z. 30 are connected in the material axis direction Y by the connecting member 5. At this time, the trailing steel sheet pile 4 is connected to the trailing side end 40 and the leading side end 30, and as shown in FIG. The movement in the wall width direction Z is constrained by being continuously fitted to the joint portion 2d up to the row steel sheet pile 4.

縦継工程では、図6〜図8に示すように、母材側突起部55に連結側突起部50を材軸方向Yに係止させた状態として、後行側端部40と先行側端部30とを材軸方向Yに連結させる。縦継工程では、最後に、図11(b)に示すように、後行鋼矢板4の壁幅方向Zの移動を継手状部材6で拘束した状態で、複数の鋼製部材が連結された連結鋼製部材70の打設工程に移行する。   In the cascade process, as shown in FIGS. 6 to 8, the connecting side protrusion 50 is locked to the base material side protrusion 55 in the material axis direction Y, and the trailing side end 40 and the leading side end are connected. The part 30 is connected to the material axis direction Y. In the cascade connection step, finally, as shown in FIG. 11 (b), a plurality of steel members are connected in a state where the movement of the trailing steel sheet pile 4 in the wall width direction Z is constrained by the joint-like member 6. The process proceeds to the placing process of the connecting steel member 70.

打設工程では、最初に、先行鋼矢板3とともに後行鋼矢板4をバイブロハンマ等で地盤内8に打設する。このとき、継手状部材6は、後行鋼矢板4の継手部2dから先行鋼矢板3の継手部2dまで連続して嵌合させた状態で、壁幅方向Zに隣接する連結鋼製部材70の上端部70aに接触するまで、後行鋼矢板4が地盤内8に打設される。そして、継手状部材6は、隣接する連結鋼製部材70の継手部2dまで連続して配置されるものとなる。   In the placing process, first, the succeeding steel sheet pile 4 and the subsequent steel sheet pile 4 are placed in the ground 8 with a vibro hammer or the like. At this time, the joint-like member 6 is a connected steel member 70 adjacent in the wall width direction Z in a state where the joint-like member 6 is continuously fitted from the joint portion 2d of the subsequent steel sheet pile 4 to the joint portion 2d of the preceding steel sheet pile 3. The subsequent steel sheet pile 4 is driven into the ground 8 until it comes into contact with the upper end portion 70a. And the joint-shaped member 6 will be continuously arrange | positioned to the joint part 2d of the adjacent connection steel member 70. FIG.

打設工程では、次に、図13に示す軸部材62を緩めるとともに、図12(a)に示すように、先行鋼矢板3とともに後行鋼矢板4をバイブロハンマ等で地盤内8にさらに打設する。このとき、後行鋼矢板4の継手部2dは、継手状部材6から隣接する連結鋼製部材70の継手部2dまで連続して下方にスライド移動して、継手状部材6に嵌合させた状態から隣接する連結鋼製部材70の継手部2dに嵌合させた状態まで移動する。   In the placing step, next, the shaft member 62 shown in FIG. 13 is loosened and, as shown in FIG. 12A, the succeeding steel sheet pile 4 and the subsequent steel sheet pile 4 are further placed in the ground 8 with a vibro hammer or the like. To do. At this time, the joint portion 2d of the trailing steel sheet pile 4 was continuously slid downward from the joint-like member 6 to the joint portion 2d of the connecting steel member 70 adjacent thereto, and fitted to the joint-like member 6. It moves from the state to the state fitted to the joint part 2d of the adjacent connected steel member 70.

打設工程では、最後に、図12(b)に示すように、後行鋼矢板4を地盤内8にさらに打設して、後行鋼矢板4の上端側で継手状部材6を引き抜いて撤去することで、壁幅方向Zで互いに隣接する複数の連結鋼製部材70の打設を完了させる。このとき、複数の連結鋼製部材70は、縦継工程と打設工程とを繰り返して、壁幅方向Zで互いに隣接して連設されることで、図1に示す鋼製壁7が構築されるものとなる。   In the placing process, finally, as shown in FIG. 12 (b), the succeeding steel sheet pile 4 is further placed in the ground 8, and the joint-like member 6 is pulled out on the upper end side of the succeeding steel sheet pile 4. Removal of the plurality of connected steel members 70 adjacent to each other in the wall width direction Z is completed. At this time, the plurality of connecting steel members 70 are repeatedly arranged adjacent to each other in the wall width direction Z by repeating the longitudinal connection process and the placing process, so that the steel wall 7 shown in FIG. 1 is constructed. Will be.

本発明を適用した縦継施工方法は、第1実施形態において、継手状部材6が拘束部材1として用いられる。このとき、本発明を適用した縦継施工方法は、図11、図12に示すように、隣接する連結鋼製部材70の継手部2dに後行鋼矢板4の継手部2dが嵌合するまでの間、後行鋼矢板4の壁幅方向Zの移動を継手状部材6で一時的に拘束できる。   The joint construction method to which the present invention is applied uses the joint-like member 6 as the restraining member 1 in the first embodiment. At this time, as shown in FIGS. 11 and 12, the cascade construction method to which the present invention is applied until the joint portion 2 d of the subsequent steel sheet pile 4 is fitted to the joint portion 2 d of the adjacent connecting steel member 70. In the meantime, the movement of the trailing steel sheet pile 4 in the wall width direction Z can be temporarily restrained by the joint-like member 6.

本発明を適用した縦継施工方法は、主に、図10(a)に示すように、後行鋼矢板4及び先行鋼矢板3の何れか一方のみに母材側突起部55が設けられるとともに、後行鋼矢板4及び先行鋼矢板3の何れか他方に連結部材5が直接取り付けられた場合に用いられる。   The cascade construction method to which the present invention is applied mainly includes a base metal side projection 55 provided on only one of the subsequent steel sheet pile 4 and the preceding steel sheet pile 3 as shown in FIG. It is used when the connecting member 5 is directly attached to either one of the following steel sheet pile 4 and the preceding steel sheet pile 3.

このとき、本発明を適用した縦継施工方法は、連結部材5を後行鋼矢板4ごと壁幅方向Zに移動させることで、複数の母材側突起部55の間に連結側突起部50をスライド挿入して、後行側端部40と先行側端部30とを位置合わせさせながら、連結部材5で後行側端部40と先行側端部30とを材軸方向Yに連結させることが必要となる。   At this time, in the cascade construction method to which the present invention is applied, the connecting member 5 is moved in the wall width direction Z together with the subsequent steel sheet pile 4, so that the connecting protrusion 50 is between the plurality of base metal protrusions 55. Is inserted, and the trailing side end 40 and the leading side end 30 are aligned with each other, and the trailing side end 40 and the leading side end 30 are connected in the material axis direction Y by the connecting member 5. It will be necessary.

このため、本発明を適用した縦継施工方法は、図11(a)に示すように、後行鋼矢板4の継手部2dを隣接する連結鋼製部材70の継手部2dに嵌合させる前の段階で、後行鋼矢板4の壁幅方向Zの移動が継手状部材6で拘束されることで、隣接する連結鋼製部材70の継手部2dに後行鋼矢板4の継手部2dを嵌合させるまでの間、後行側端部40と先行側端部30とを位置合わせさせた状態を維持することができる。   For this reason, the cascade construction method to which the present invention is applied is shown in FIG. 11 (a) before fitting the joint portion 2d of the subsequent steel sheet pile 4 to the joint portion 2d of the adjacent connecting steel member 70. At this stage, the movement of the trailing steel sheet pile 4 in the wall width direction Z is restricted by the joint-like member 6, so that the joint portion 2 d of the subsequent steel sheet pile 4 is attached to the joint portion 2 d of the adjacent connected steel member 70. Until it is fitted, it is possible to maintain a state in which the trailing end 40 and the leading end 30 are aligned.

これにより、本発明を適用した縦継施工方法は、バイブロハンマ等による打設時の衝撃又は振動によって、後行鋼矢板4の位置がずれ易くなるにもかかわらず、後行鋼矢板4の壁幅方向Zの移動を継手状部材6で拘束することで、後行側端部40と先行側端部30とを位置合わせさせた状態が維持されるため、隣接する連結鋼製部材70の継手部2dまで後行鋼矢板4の継手部2dを円滑に嵌合させることが可能となる。   As a result, the cascade construction method to which the present invention is applied has the wall width of the succeeding steel sheet pile 4 despite the fact that the position of the succeeding steel sheet pile 4 is likely to shift due to impact or vibration at the time of placing by vibro hammer or the like. By constraining the movement in the direction Z by the joint-like member 6, the state where the trailing side end 40 and the leading side end 30 are aligned is maintained. It is possible to smoothly fit the joint portion 2d of the trailing steel sheet pile 4 up to 2d.

また、本発明を適用した縦継施工方法は、図14に示すように、後行鋼矢板4及び先行鋼矢板3の両方に母材側突起部55が設けられた場合にも用いることができる。このとき、本発明を適用した縦継施工方法では、施工現場の状況によっては、図10に示すように、後行鋼矢板4の継手部2dを隣接する連結鋼製部材70の継手部2dに嵌合させる前の段階で、後行側端部40と先行側端部30とを位置合わせさせながら、後行側端部40と先行側端部30とを図14に示す連結部材5で連結させることが必要となる。   Moreover, the cascade construction method to which the present invention is applied can also be used when the base metal side projection 55 is provided on both the subsequent steel sheet pile 4 and the preceding steel sheet pile 3 as shown in FIG. . At this time, in the cascade construction method to which the present invention is applied, depending on the situation at the construction site, the joint portion 2d of the subsequent steel sheet pile 4 is connected to the joint portion 2d of the adjacent connected steel member 70 as shown in FIG. Before the fitting, the trailing side end 40 and the leading side end 30 are aligned with the connecting member 5 shown in FIG. 14 while aligning the trailing side end 40 and the leading side end 30. It is necessary to make it.

本発明を適用した縦継施工方法は、このような場合でも、拘束部材1となる継手状部材6で後行鋼矢板4の壁幅方向Zの移動を一時的に拘束することで、後行側端部40と先行側端部30とを位置合わせさせた状態が維持されて、隣接する連結鋼製部材70の継手部2dまで後行鋼矢板4の継手部2dを円滑に嵌合させることが可能となる。なお、本発明を適用した縦継施工方法は、現場溶接、高力ボルト摩擦接合又は特許文献1の継手構造等の方法で、後行鋼矢板4と先行鋼矢板3とを連結する場合であっても、拘束部材1となる継手状部材6で後行鋼矢板4の壁幅方向Zの移動を拘束することで、バイブロハンマ等の振動等に起因する溶接箇所の損傷、高力ボルト等の緩みを軽減させることが可能となる。   Even in such a case, the cascade construction method to which the present invention is applied is that the joint member 6 serving as the restraining member 1 temporarily restrains the movement of the succeeding steel sheet pile 4 in the wall width direction Z. The state in which the side end portion 40 and the leading end portion 30 are aligned is maintained, and the joint portion 2d of the subsequent steel sheet pile 4 is smoothly fitted to the joint portion 2d of the adjacent connecting steel member 70. Is possible. The cascade construction method to which the present invention is applied is a case where the subsequent steel sheet pile 4 and the preceding steel sheet pile 3 are connected by a method such as on-site welding, high-strength bolt friction joining, or a joint structure of Patent Document 1. However, by restraining the movement of the trailing steel sheet pile 4 in the wall width direction Z by the joint-like member 6 that becomes the restraining member 1, damage to the welded part due to vibration of a vibratory hammer or the like, loosening of high-strength bolts, etc. Can be reduced.

本発明を適用した縦継施工方法では、第2実施形態において、図15に示す枠部材60、図16に示す板部材61、図17に示す軸部材62、又は、図18に示す閂部材63の何れか一部又は全部が、拘束部材1として連結部材5に設けられる。なお、枠部材60等の拘束部材1は、後行側端部40及び先行側端部30の一方又は両方に母材側突起部55が設けられた場合に用いることができる。   In the cascade construction method to which the present invention is applied, in the second embodiment, the frame member 60 shown in FIG. 15, the plate member 61 shown in FIG. 16, the shaft member 62 shown in FIG. 17, or the flange member 63 shown in FIG. Any one part or all of these are provided in the connection member 5 as the restraint member 1. The restraining member 1 such as the frame member 60 can be used when the base material side protrusion 55 is provided on one or both of the trailing side end 40 and the leading side end 30.

このとき、縦継工程では、複数の母材側突起部55の間に連結側突起部50をスライド挿入して、後行側端部40と先行側端部30とを位置合わせさせながら、後行側端部40と先行側端部30とを連結部材5で連結させて、これら枠部材60等が拘束部材1として連結部材5に設けられるものとなる。   At this time, in the cascade process, the connecting side protrusion 50 is slid and inserted between the plurality of base material side protrusions 55 so that the trailing side end 40 and the leading side end 30 are aligned. The row end 40 and the leading end 30 are connected by the connecting member 5, and the frame member 60 and the like are provided as the restraining member 1 on the connecting member 5.

縦継工程では、図15に示すように、拘束部材1として枠部材60が設けられる場合に、母材側突起部55と連結側突起部50とが互いに係止された状態で、母材側突起部55と連結側突起部50とを取り囲むようにして、連結部材5に枠部材60が取り付けられる。縦継工程では、連結側突起部50と母材側突起部55とが枠部材60の横枠部60aで挟み込まれることで、後行鋼矢板4の壁幅方向Zの移動が枠部材60で拘束される。   In the longitudinal joining process, as shown in FIG. 15, when the frame member 60 is provided as the restraining member 1, the base material side protrusion 55 and the connection side protrusion 50 are locked together, The frame member 60 is attached to the connecting member 5 so as to surround the protruding portion 55 and the connecting-side protruding portion 50. In the longitudinal connection process, the connection-side protrusion 50 and the base material-side protrusion 55 are sandwiched between the horizontal frame portions 60 a of the frame member 60, so that the movement of the subsequent steel sheet pile 4 in the wall width direction Z is performed by the frame member 60. Be bound.

枠部材60は、先行側端部30に母材側突起部55が設けられた場合に用いてもよいが、特に、後行側端部40に母材側突起部55が設けられた場合に用いることが望ましい。このとき、枠部材60は、必要に応じて、連結部材5の上端面5bに形成された係止溝52に、枠部材60の上枠部60bが嵌め込まれることで、枠部材60が材軸直交方向Xに拘束されて、枠部材60の脱落を防止することができる。   The frame member 60 may be used when the base material side projection 55 is provided at the leading end 30, but particularly when the base material projection 55 is provided at the trailing side end 40. It is desirable to use it. At this time, the frame member 60 is fitted into the locking groove 52 formed in the upper end surface 5b of the connecting member 5 as necessary, so that the frame member 60 is fitted into the material shaft. Restrained in the orthogonal direction X, the frame member 60 can be prevented from falling off.

縦継工程では、図16に示すように、拘束部材1として板部材61が設けられる場合に、母材側突起部55と連結側突起部50とが互いに係止された状態で、板部材61が連結部材5から母材側突起部55まで架設されて、板部材61の両端がネジ止め等で連結部材5及び母材側突起部55に固定される。縦継工程では、連結部材5から母材側突起部55まで平鋼等の板部材61が架設されることで、後行鋼矢板4の壁幅方向Zの移動が板部材61で拘束される。   In the longitudinal joining process, as shown in FIG. 16, when the plate member 61 is provided as the restraining member 1, the plate member 61 is in a state where the base material side protrusion 55 and the connection side protrusion 50 are locked to each other. Is constructed from the connecting member 5 to the base material side protrusion 55, and both ends of the plate member 61 are fixed to the connection member 5 and the base material side protrusion 55 by screws or the like. In the cascade process, a plate member 61 such as a flat steel is erected from the connecting member 5 to the base material side protruding portion 55, so that the movement of the subsequent steel sheet pile 4 in the wall width direction Z is restrained by the plate member 61. .

縦継工程では、図17に示すように、拘束部材1として軸部材62が設けられる場合に、母材側突起部55と連結側突起部50とが互いに係止された状態で、軸部材62が連結部材5から連続して母材側突起部55まで貫通させて設けられる。縦継工程では、ボルト等の軸部材62が連結部材5から母材側突起部55まで連続して設けられることで、後行鋼矢板4の壁幅方向Zの移動が軸部材62で拘束される。   In the longitudinal joining process, as shown in FIG. 17, when the shaft member 62 is provided as the restraining member 1, the shaft member 62 is in a state where the base material side protrusion 55 and the connection side protrusion 50 are locked to each other. Is provided continuously from the connecting member 5 to the base material side protrusion 55. In the cascading step, the shaft member 62 such as a bolt is continuously provided from the connecting member 5 to the base material side protrusion 55, so that the movement of the subsequent steel sheet pile 4 in the wall width direction Z is restrained by the shaft member 62. The

縦継工程では、図18に示すように、拘束部材1として閂部材63が設けられる場合に、連結側突起部50及び母材側突起部55が壁幅方向Zで部分的に切り欠かれて、連結側突起部50及び母材側突起部55に切欠溝63aが形成されるものとする。縦継工程では、母材側突起部55と連結側突起部50とが互いに係止された状態で、母材側突起部55及び連結側突起部50に形成された切欠溝63aに、材軸方向Yに連続して延びる断面略矩形状等の閂部材63を嵌装させて、連結部材5に閂部材63が取り付けられる。   In the longitudinal joining process, as shown in FIG. 18, when the flange member 63 is provided as the restraining member 1, the connection side protrusion 50 and the base material side protrusion 55 are partially cut away in the wall width direction Z. In addition, a notch groove 63a is formed in the connection side protrusion 50 and the base material side protrusion 55. In the longitudinal piecing process, in the state where the base material side protrusion 55 and the connection side protrusion 50 are locked to each other, the material shaft is inserted into the notch groove 63a formed in the base material side protrusion 55 and the connection side protrusion 50. The flange member 63 is attached to the connecting member 5 by fitting the flange member 63 having a substantially rectangular cross section extending continuously in the direction Y.

縦継工程では、連結側突起部50及び母材側突起部55が閂部材63に係止されることで、後行鋼矢板4の壁幅方向Zの移動が閂部材63で拘束される。閂部材63は、先行側端部30に母材側突起部55が設けられた場合に用いてもよいが、特に、後行側端部40に母材側突起部55が設けられた場合に用いることで、切欠溝63aに嵌装された閂部材63の自重による脱落を防止することができる。   In the cascading step, the connection-side protrusion 50 and the base-material-side protrusion 55 are locked to the flange member 63, so that the movement of the subsequent steel sheet pile 4 in the wall width direction Z is restrained by the flange member 63. The eaves member 63 may be used when the base material side protrusion 55 is provided at the leading end 30, but particularly when the base material protrusion 55 is provided at the trailing side end 40. By using it, it is possible to prevent the collar member 63 fitted in the notch groove 63a from falling off due to its own weight.

本発明を適用した縦継施工方法では、第1実施形態及び第2実施形態の何れにおいても、後行鋼矢板4の壁幅方向Zの移動を拘束部材1で拘束することができる。これにより、本発明を適用した縦継施工方法では、図9〜図11に示すように、隣接する連結鋼製部材70の継手部2dまで後行鋼矢板4の継手部2dを円滑に嵌合させて、複数の鋼製部材を材軸方向Yで互いに簡易、迅速に連結させることが可能となる。なお、本発明を適用した縦継施工方法では、第1実施形態の継手状部材6と第2実施形態の枠部材60等とを組み合わせて用いることもできる。   In the cascade construction method to which the present invention is applied, the movement of the trailing steel sheet pile 4 in the wall width direction Z can be restrained by the restraining member 1 in both the first embodiment and the second embodiment. Thereby, in the cascade construction method to which this invention is applied, as shown in FIGS. 9-11, the joint part 2d of the subsequent steel sheet pile 4 is smoothly fitted to the joint part 2d of the adjacent connection steel member 70. FIG. Thus, a plurality of steel members can be easily and quickly connected to each other in the material axis direction Y. In the cascade construction method to which the present invention is applied, the joint-like member 6 of the first embodiment and the frame member 60 of the second embodiment can be used in combination.

また、本発明を適用した縦継施工方法では、第1実施形態で継手状部材6が拘束部材1として設けられて、又は、第2実施形態で図15〜図18に示す枠部材60等が拘束部材1として設けられることで、隣接する連結鋼製部材70の継手部2dまで後行鋼矢板4の継手部2dを嵌合させた後に、継手状部材6又は枠部材60等の拘束部材1を撤去して再利用することができる。これにより、本発明を適用した縦継施工方法では、拘束部材1として設けられる継手状部材6等の材料コストの増大を抑制することが可能となる。   In the cascade construction method to which the present invention is applied, the joint-like member 6 is provided as the restraining member 1 in the first embodiment, or the frame member 60 shown in FIGS. 15 to 18 in the second embodiment. By being provided as the restraining member 1, after the joint portion 2 d of the subsequent steel sheet pile 4 is fitted to the joint portion 2 d of the adjacent connecting steel member 70, the restraining member 1 such as the joint-like member 6 or the frame member 60. Can be removed and reused. Thereby, in the cascade construction method to which the present invention is applied, it is possible to suppress an increase in material cost of the joint-like member 6 provided as the restraining member 1.

さらに、本発明を適用した縦継施工方法では、複数の鋼製部材を連結部材5で連結することで、複数の鋼製部材が連結される箇所で、十分な曲げ剛性が確保されて構造的弱点とならないものとなり、複数の鋼製部材が材軸方向Yに連結された連結鋼製部材70全体の曲げ性能の低下を回避することが可能となる。   Furthermore, in the cascade construction method to which the present invention is applied, by connecting a plurality of steel members with the connecting member 5, a sufficient bending rigidity is ensured at a location where the plurality of steel members are connected, and structurally. It becomes a weak point, and it becomes possible to avoid a decrease in bending performance of the entire connected steel member 70 in which a plurality of steel members are connected in the material axis direction Y.

本発明を適用した縦継施工方法は、所定の断面形状の複数の鋼製部材を、材軸方向Yで互いに連結させるために用いられて、主に、図3〜図5に示すように、複数の鋼矢板2を連結部材5で連結させるものとなる。本発明を適用した縦継施工方法は、特に、第2実施形態において、図19(a)に示す断面略H形状のH形鋼24、図19(b)に示す断面略矩形状の角形鋼管25、又は、図19(c)に示す断面略円形状の円形鋼管26等を、所定の断面形状の複数の鋼製部材として連結部材5で連結させることもできる。   The cascade construction method to which the present invention is applied is used for connecting a plurality of steel members having a predetermined cross-sectional shape to each other in the material axis direction Y, mainly as shown in FIGS. The plurality of steel sheet piles 2 are connected by the connecting member 5. In the second embodiment, the cascade construction method to which the present invention is applied is a H-section steel 24 having a substantially H-shaped cross section shown in FIG. 19A and a rectangular steel pipe having a substantially rectangular cross-section shown in FIG. 19B. 25 or a circular steel pipe 26 having a substantially circular cross section shown in FIG. 19 (c) can be connected by a connecting member 5 as a plurality of steel members having a predetermined cross sectional shape.

以上、本発明の実施形態の例について詳細に説明したが、上述した実施形態は、何れも本発明を実施するにあたっての具体化の例を示したものに過ぎず、これらによって本発明の技術的範囲が限定的に解釈されてはならない。   As mentioned above, although the example of embodiment of this invention was demonstrated in detail, all the embodiment mentioned above showed only the example of actualization in implementing this invention, and these are the technical aspects of this invention. The range should not be interpreted in a limited way.

1 :拘束部材
2 :鋼矢板
2a :フランジ部
2b :ウェブ部
2c :アーム部
2d :継手部
20 :平坦面
21 :ハット形鋼矢板
22 :U形鋼矢板
23 :Z形鋼矢板
24 :H形鋼
25 :角形鋼管
26 :円形鋼管
3 :先行鋼矢板
30 :先行側端部
4 :後行鋼矢板
40 :後行側端部
5 :連結部材
5a :下端面
5b :上端面
50 :連結側突起部
51 :平板部
52 :係止溝
54 :母材鋼板
55 :母材側突起部
6 :継手状部材
6a :爪部
6b :延伸部
6c :挟持板
6d :架設部
60 :枠部材
60a :横枠部
60b :上枠部
61 :板部材
62 :軸部材
63 :閂部材
63a :切欠溝
7 :鋼製壁
70 :連結鋼製部材
70a :上端部
8 :地盤内
X :材軸直交方向
Y :材軸方向
Z :壁幅方向
1: Restraining member 2: Steel sheet pile 2a: Flange part 2b: Web part 2c: Arm part 2d: Joint part 20: Flat surface 21: Hat-shaped steel sheet pile 22: U-shaped steel sheet pile 23: Z-shaped steel sheet pile 24: H-shaped Steel 25: Square steel pipe 26: Circular steel pipe 3: Leading steel sheet pile 30: Leading side end part 4: Trailing steel sheet pile 40: Trailing side end part 5: Connecting member 5a: Lower end face 5b: Upper end face 50: Connecting side protrusion Part 51: Flat plate part 52: Locking groove 54: Base material steel plate 55: Base material side protrusion 6: Joint-like member 6a: Claw part 6b: Extending part 6c: Holding plate 6d: Construction part 60: Frame member 60a: Horizontal Frame portion 60b: upper frame portion 61: plate member 62: shaft member 63: flange member 63a: notch groove 7: steel wall 70: connecting steel member 70a: upper end portion 8: ground X: material axis orthogonal direction Y: Material axis direction Z: Wall width direction

Claims (6)

所定の断面形状の複数の鋼製部材を材軸方向に連結させる縦継施工方法であって、
複数の鋼製部材で互いに対向する各々の材軸方向の端部を連結させる縦継工程を備え、
前記縦継工程では、先行の鋼製部材となる先行鋼製部材に対して後行の鋼製部材となる後行鋼製部材を壁幅方向に移動させて、前記後行鋼製部材の端部となる後行側端部と前記先行鋼製部材の端部となる先行側端部とを壁幅方向に位置合わせさせながら、前記後行側端部と前記先行側端部とを材軸方向に連結させるとともに、前記後行鋼製部材の壁幅方向の移動を拘束部材で拘束すること
を特徴とする縦継施工方法。
It is a cascade construction method for connecting a plurality of steel members having a predetermined cross-sectional shape in the material axis direction,
A longitudinal connection step of connecting the ends in the axial direction of each material facing each other with a plurality of steel members;
In the cascade step, an end of the succeeding steel member is moved by moving a succeeding steel member serving as the succeeding steel member in the wall width direction with respect to the preceding steel member serving as the preceding steel member. The trailing side end and the leading side end are aligned with each other in the wall width direction while the trailing side end serving as the portion and the leading side end serving as the end of the preceding steel member are aligned in the wall width direction. The longitudinal construction method is characterized in that the movement in the wall width direction of the succeeding steel member is restrained by a restraining member while being connected in the direction.
前記先行鋼製部材及び前記後行鋼製部材に鋼矢板が用いられるとともに、
前記縦継工程では、前記先行鋼製部材となる先行鋼矢板の継手部に前記拘束部材となる継手状部材を嵌合させてから、前記後行鋼製部材となる後行鋼矢板の継手部を前記継手状部材に嵌合させて、前記後行鋼製部材の壁幅方向の移動を前記継手状部材で拘束すること
を特徴とする請求項1記載の縦継施工方法。
While steel sheet piles are used for the preceding steel member and the following steel member,
In the cascade step, after fitting a joint-like member serving as the restraining member to a joint portion of the preceding steel sheet pile serving as the preceding steel member, a joint portion of the succeeding steel sheet pile serving as the succeeding steel member The joint construction method according to claim 1, wherein the joint-like member is fitted and the movement of the succeeding steel member in the wall width direction is restricted by the joint-like member.
前記縦継工程では、前記後行側端部と前記先行側端部とを壁幅方向に位置合わせさせて、前記先行側端部及び前記後行側端部の何れか一方又は両方に形成された母材側突起部に、前記後行側端部から前記先行側端部まで架設される連結部材に形成された連結側突起部が係止した状態として、前記後行側端部と前記先行側端部とを材軸方向に連結させること
を特徴とする請求項1又は2記載の縦継施工方法。
In the cascading step, the trailing side end and the leading side end are aligned in the wall width direction, and formed at one or both of the leading side end and the trailing side end. In the state where the connecting side protrusion formed on the connecting member erected from the trailing side end to the leading side end is locked to the base material side protruding part, the trailing side end and the leading side The longitudinal construction method according to claim 1, wherein the side end portion is connected in the material axis direction.
前記縦継工程では、前記連結側突起部と前記母材側突起部とが互いに係止された状態で取り囲まれる枠部材、及び、前記連結部材から前記母材側突起部まで架設される板部材の何れか一方又は両方が、前記拘束部材として前記連結部材に設けられること
を特徴とする請求項3記載の縦継施工方法。
In the longitudinal connection step, a frame member that is surrounded in a state where the connection-side protrusion and the base material-side protrusion are engaged with each other, and a plate member that extends from the connection member to the base material-side protrusion Either or both of these are provided in the said connection member as the said restraint member. The cascade construction method of Claim 3 characterized by the above-mentioned.
前記縦継工程では、前記連結部材から連続して前記母材側突起部まで貫通させた軸部材、及び、前記連結側突起部と前記母材側突起部とに形成された切欠溝に嵌装させた閂部材の何れか一方又は両方が、前記拘束部材として前記連結部材に設けられること
を特徴とする請求項3又は4記載の縦継施工方法。
In the longitudinal connection step, the shaft member continuously penetrated from the connecting member to the base material side protrusion, and the notch groove formed in the connection side protrusion and the base material side protrusion is fitted. Either or both of the made eaves members are provided in the connection member as the restraint member. The cascade construction method according to claim 3 or 4.
複数の鋼矢板を材軸方向に連結させるための拘束部材であって、
先行の鋼矢板となる先行鋼矢板の継手部及び後行の鋼矢板となる後行鋼矢板の継手部に嵌合される継手状部材を備え、
前記継手状部材は、前記後行鋼矢板の端部となる後行側端部と前記先行鋼矢板の端部となる先行側端部とが材軸方向で互いに対向した状態で、前記先行鋼矢板の継手部から前記後行鋼矢板の継手部まで連続して設けられること
を特徴とする拘束部材。
A constraining member for connecting a plurality of steel sheet piles in the material axis direction,
A joint-like member fitted to the joint portion of the preceding steel sheet pile that becomes the preceding steel sheet pile and the joint portion of the subsequent steel sheet pile that becomes the subsequent steel sheet pile,
The joint-shaped member is configured so that the following steel is in a state in which a trailing side end serving as an end of the following steel sheet pile and a leading side end serving as an end of the preceding steel sheet pile face each other in the material axis direction. A restraint member characterized by being provided continuously from a joint portion of a sheet pile to a joint portion of the succeeding steel sheet pile.
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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2020129622A1 (en) * 2018-12-21 2020-06-25 日本製鉄株式会社 Combined steel sheet pile and steel sheet pile walls
JP7002887B2 (en) 2017-08-23 2022-01-20 株式会社技研製作所 Steel sheet pile

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP7002887B2 (en) 2017-08-23 2022-01-20 株式会社技研製作所 Steel sheet pile
WO2020129622A1 (en) * 2018-12-21 2020-06-25 日本製鉄株式会社 Combined steel sheet pile and steel sheet pile walls

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