JP7002887B2 - Steel sheet pile - Google Patents
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- JP7002887B2 JP7002887B2 JP2017159861A JP2017159861A JP7002887B2 JP 7002887 B2 JP7002887 B2 JP 7002887B2 JP 2017159861 A JP2017159861 A JP 2017159861A JP 2017159861 A JP2017159861 A JP 2017159861A JP 7002887 B2 JP7002887 B2 JP 7002887B2
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本発明は、継手（横継手）を本体の両側に備えるとともに、縦方向に継ぐための嵌合構造による縦継手を縦方向の端部に備える鋼矢板に関する。 The present invention relates to a steel sheet pile in which joints (horizontal joints) are provided on both sides of the main body and vertical joints having a fitting structure for joining in the vertical direction are provided at the ends in the vertical direction.
従来、鋼矢板を縦継する場合、溶接継又はボルト継による接合方法が用いられている。これに対し特許文献１には、溶接継やボルト継によらず、弾性嵌合により鋼矢板を縦継することが提案されている。 Conventionally, when steel sheet piles are vertically joined, a welding method or a bolt joining method has been used. On the other hand, Patent Document 1 proposes to vertically join steel sheet piles by elastic fitting, regardless of welding joints or bolt joints.
しかしながら、特許文献１の鋼矢板において、縦継手は、略Ｕ字形状の本体の背面部（同文献中「底面部１ｂ」）と、両側の側面部（同文献中符号「１ｃ」）に設けられている。すなわち、略Ｕ字形状の本体にのみ縦継手が設けられており、横継手である両端部の連結部（同文献中符号「１ａ」）には縦継手は設けられていない。
鋼矢板は、土圧などの外力を受けて曲げが発生する。
特許文献１のような鋼矢板における本体側面部の縦継手は、本体背面部から距離が近いから縦継部の剛性が小さくなる。
また当該本体側面部の縦継手は、本体背面の近傍から横継手の近傍までに延在する配置となっている。すなわち、当該本体側面部の縦継手は、鋼矢板が土圧などの外力を受けて曲げ応力が発生する際の中立面を横断する配置となっている。したがって、当該本体側面部の縦継手は、本体背面の近傍から横継手の近傍までに亘る存在範囲において発生する応力は不均一であり、応力集中が発生しやすくなっている。
以上により、縦継手に局所的な高い応力が発生して変形や破壊が生じ、当該縦継手による縦継部の連結に不具合が生じるおそれがある。
However, in the steel sheet pile of Patent Document 1, the vertical joints are provided on the back surface portion of the main body having a substantially U shape (“bottom surface portion 1b” in the same document) and the side surface portions on both sides (reference numeral “1c” in the same document). Has been done. That is, the vertical joint is provided only in the substantially U-shaped main body, and the vertical joint is not provided in the connecting portion (reference numeral "1a" in the same document) at both ends of the horizontal joint.
The steel sheet pile is bent by receiving an external force such as earth pressure.
In the vertical joint of the side surface portion of the main body of the steel sheet pile as in Patent Document 1, the rigidity of the vertical joint portion is reduced because the distance from the back surface portion of the main body is short.
Further, the vertical joint on the side surface of the main body extends from the vicinity of the back surface of the main body to the vicinity of the horizontal joint. That is, the vertical joint on the side surface of the main body is arranged so as to cross the neutral surface when the steel sheet pile receives an external force such as earth pressure and a bending stress is generated. Therefore, in the vertical joint on the side surface of the main body, the stress generated in the existence range from the vicinity of the back surface of the main body to the vicinity of the horizontal joint is non-uniform, and stress concentration is likely to occur.
As a result, a high local stress is generated in the vertical joint, deformation or breakage occurs, and there is a possibility that the connection of the vertical joint portion by the vertical joint may be defective.
本発明は以上の従来技術における問題に鑑みてなされたものであって、縦継手における局所的な高い応力の発生を防ぎ、当該縦継手による縦継部の連結強度を向上させることを課題とする。 The present invention has been made in view of the above problems in the prior art, and an object of the present invention is to prevent the generation of locally high stress in a vertical joint and to improve the connection strength of a vertical joint portion by the vertical joint. ..
以上の課題を解決するための請求項１記載の発明は、本体の縦方向に沿う両側縁に横継手が延設され、当該本体が当該両側縁を通る平面に対して片側へ迂回した断面半円形の形状を有する鋼矢板であって、
縦方向に継ぐための嵌合構造による縦継手を縦方向の端部に備え、
前記横継手は、横方向に延びる腕部を有し、
少なくとも、前記腕部における縦方向の端部に、係止爪を含む前記縦継手を構成する部材が配置され、
前記縦継手を構成する部材は、前記本体の迂回方向に面する本体背面側と、前記本体の迂回方向の逆方向に面する前記腕部の腕部腹面側とに配置され、
前記本体の横方向及び縦方向に垂直な前記嵌合構造の嵌合幅寸法が前記本体背面から前記腕部腹面までの寸法以上であり、
前記係止爪が、前記本体背面側と、前記腕部腹面側とに配置され、
前記本体に配置された前記縦継手を構成する部材は、前記本体背面側にのみ配置され、
前記腕部に配置された前記縦継手を構成する部材は、前記腕部腹面側にのみ配置され、
それぞれの前記縦継手は、前記鋼矢板の縦方向の端部が他の鋼矢板の縦方向の端部に接近する過程において、前記本体の横方向及び縦方向に垂直な方向に弾性変形して開き、前記係止爪が係止する鋼矢板である。
In the invention according to claim 1 for solving the above problems, horizontal joints are extended on both side edges along the vertical direction of the main body, and the main body detours to one side with respect to a plane passing through the both side edges. A steel sheet pile with a circular shape,
A vertical joint with a fitting structure for vertical joints is provided at the vertical end.
The horizontal joint has an arm portion extending laterally and has an arm portion.
At least at the vertical end of the arm, a member constituting the vertical joint including a locking claw is arranged.
The members constituting the vertical joint are arranged on the back surface side of the main body facing the detour direction of the main body and the ventral side of the arm portion facing the opposite direction of the detour direction of the main body.
The fitting width dimension of the fitting structure perpendicular to the lateral and vertical directions of the main body is equal to or larger than the dimension from the back surface of the main body to the ventral surface of the arm .
The locking claws are arranged on the back surface side of the main body and the ventral surface side of the arm.
The members constituting the vertical joint arranged on the main body are arranged only on the back surface side of the main body.
The members constituting the vertical joint arranged on the arm portion are arranged only on the ventral surface side of the arm portion.
Each of the vertical joints is elastically deformed in the horizontal and vertical directions of the main body in the process in which the vertical end of the steel sheet pile approaches the vertical end of the other steel sheet pile. A steel sheet pile that opens and locks the locking claws .
請求項２記載の発明は、前記本体背面側に配置された前記縦継手を構成する部材の本体の横方向に沿った嵌合長さと、両側の前記腕部腹面側に配置された前記縦継手を構成する部材の本体の横方向に沿った嵌合長さの合計との大小関係が、当該各部材の中立面からの距離の大小関係に従っている請求項１に記載の鋼矢板である。 The invention according to claim 2 has a fitting length along the lateral direction of the main body of a member constituting the vertical joint arranged on the back surface side of the main body, and the vertical joint arranged on the ventral side of the arm on both sides. The steel sheet pile according to claim 1 , wherein the magnitude relationship with the total fitting length along the lateral direction of the main body of the member constituting the member follows the magnitude relationship of the distance from the neutral surface of each member.
本発明によれば、本体背面部から遠い側で本体背面部に略平行に延びる横継手の腕部に、係止爪を含む縦継手を構成する部材が配置されているので、同部材に発生する応力が均一となり、縦継手における局所的な高い応力の発生が防がれ、縦継手による縦継部の連結強度を向上させることができる。 According to the present invention, since a member constituting the vertical joint including the locking claw is arranged on the arm portion of the horizontal joint extending substantially parallel to the back surface portion of the main body on the side far from the back surface portion of the main body, the member is generated in the same member. The stress to be applied becomes uniform, the generation of high local stress in the vertical joint can be prevented, and the connection strength of the vertical joint portion by the vertical joint can be improved.
以下に本発明の一実施形態につき図面を参照して説明する。以下は本発明の一実施形態であって本発明を限定するものではない。 Hereinafter, one embodiment of the present invention will be described with reference to the drawings. The following is an embodiment of the present invention and does not limit the present invention.
〔第１実施形態〕
＜鋼矢板（縦継手以外の構成の説明）＞
図１に本発明の一実施形態の鋼矢板の中間部分の構造が示される。なお、混乱を避けるため、横方向の継手を横継手と呼ぶ。本実施形態の横継手の嵌合構造は上述した縦入れ式、横入れ式のうち横入れ式であり、以下に説明を開示する。本発明の横継手は、横入れ式に限定されるものではなく、縦入れ式でも実施可能である。
[First Embodiment]
<Steel sheet pile (explanation of configurations other than vertical joints)>
FIG. 1 shows the structure of the intermediate portion of the steel sheet pile according to the embodiment of the present invention. To avoid confusion, the lateral joint is called a horizontal joint. The fitting structure of the horizontal joint of the present embodiment is the horizontal insertion type among the vertical insertion type and the horizontal insertion type described above, and the description thereof will be disclosed below. The horizontal joint of the present invention is not limited to the horizontal insertion type, and can be implemented by the vertical insertion type.
図１に示すように本発明の一実施形態の鋼矢板ａ０１は、本体ａ０２と、一方の横継手ａ０３と、他方の横継手ａ０４とを備える。
図１(b)に示すように本体ａ０２の長手方向が縦方向ａ０５である。図１(a)は縦方向ａ０５に垂直な断面図である。
本体ａ０２の縦方向ａ０５に沿う両側縁ａ０６，ａ０７に横継手ａ０３，ａ０４が延設されている。本体ａ０２は、両側縁ａ０６，ａ０７を通る平面ａ０８に対して片側へ迂回した形状を有する。図示例では、本体ａ０２は、断面半円形の構造により迂回した形状を形成しているが、断面Ｕ形等の他の構造でもよい。
横継手ａ０３は、その屈曲部ａ０９により本体ａ０２の縦方向ａ０５に沿う嵌合溝ａ１０を形成している。
横継手ａ０４は、図２の矢印ａ１１で示すように嵌合溝ａ１０に側方から相対的に差し入れられて、さらに図２の矢印ａ１２で示すように相対的に回転させられることで、図３に示すように嵌合可能な鉤状部ａ１３を形成している。ここで、「差し入れる」及び「回転させる」は、相対的であれば継手嵌合は成立するので、どちらの矢板を動かすこととなってもよい。
As shown in FIG. 1, the steel sheet pile a01 according to the embodiment of the present invention includes a main body a02, one horizontal joint a03, and the other horizontal joint a04.
As shown in FIG. 1 (b), the longitudinal direction of the main body a02 is the longitudinal direction a05. FIG. 1A is a cross-sectional view perpendicular to the vertical direction a05.
Horizontal joints a03 and a04 are extended to both side edges a06 and a07 along the vertical direction a05 of the main body a02. The main body a02 has a shape detoured to one side with respect to the plane a08 passing through both side edges a06 and a07. In the illustrated example, the main body a02 has a detoured shape due to a structure having a semicircular cross section, but another structure such as a U-shaped cross section may be used.
The horizontal joint a03 forms a fitting groove a10 along the vertical direction a05 of the main body a02 by the bent portion a09.
The horizontal joint a04 is relatively inserted into the fitting groove a10 from the side as shown by the arrow a11 in FIG. 2, and is further rotated relative to the fitting groove a10 as shown by the arrow a12 in FIG. As shown in the above, a hook-shaped portion a13 that can be fitted is formed. Here, if "inserting" and "rotating" are relative, the joint fitting is established, so either sheet pile may be moved.
さらに構造を詳細に説明する。
図１に示すように横継手ａ０３は、一側縁ａ０６において本体ａ０２から離れる横方向ａ１４に延設された腕部ａ１５を有する。横継手ａ０３は、一側縁ａ０６に結合する側を基端とし、その逆側を先端とする。
さらに横継手ａ０３は、腕部ａ１５の先端ａ１６から本体ａ０２の迂回方向ａ１７に曲がり本体ａ０２から離れる斜め方向ａ１８に延設された第１壁部ａ１９を有する。
さらに横継手ａ０３は、第１壁部ａ１９の先端ａ２０から本体ａ０２から離れる横方向ａ１４に延設された第２壁部ａ２２を有する。
さらに横継手ａ０３は、第２壁部ａ２２の先端ａ２３から本体ａ０２の迂回方向ａ１７の逆方向ａ２４に曲がり本体ａ０２に近づく斜め方向ａ２５へ延設された第３壁部ａ２６を有する。
横継手ａ０３は、以上の第１壁部ａ１９と第２壁部ａ２２と第３壁部ａ２６とにより本体ａ０２の縦方向ａ０５に沿う上述の嵌合溝ａ１０を形成している。
一方、横継手ａ０４は、他の一側縁ａ０７において本体ａ０２から離れる横方向ａ２７に延設された腕部ａ２８と、上述の鉤状部ａ１３とを有する。
鉤状部ａ１３は、腕部ａ２８の先端ａ２９から本体ａ０２の迂回方向ａ１７に曲がり本体ａ０２に近づく斜め方向ａ３０へ延設されている。
以上の構造により、図２の矢印ａ１１で示すように嵌合溝ａ１０に側方から相対的に差し入れられて、さらに図２の矢印ａ１２で示すように相対的に回転させられることで、図３に示すように嵌合可能な継手の嵌合構造が構成される。この継手の嵌合構造の基本は、特許文献１に記載の物と同様であり、嵌合溝ａ１０の開口幅寸法、奥側寸法、鉤状部ａ１３の先端の爪形状、最大幅寸法などを適宜に設計して実施する。
なお、横方向（ａ１４，ａ２７）は、縦方向（ａ０５）及び迂回方向（ａ１７）に垂直な方向である。
Further, the structure will be described in detail.
As shown in FIG. 1, the horizontal joint a03 has an arm portion a15 extending in the lateral direction a14 away from the main body a02 at the one side edge a06. The horizontal joint a03 has a base end on the side connected to the one side edge a06 and a tip on the opposite side.
Further, the horizontal joint a03 has a first wall portion a19 that bends from the tip a16 of the arm portion a15 in the detour direction a17 of the main body a02 and extends in the diagonal direction a18 away from the main body a02.
Further, the horizontal joint a03 has a second wall portion a22 extending in the lateral direction a14 away from the main body a02 from the tip a20 of the first wall portion a19.
Further, the horizontal joint a03 has a third wall portion a26 that bends from the tip end a23 of the second wall portion a22 in the opposite direction a24 of the detour direction a17 of the main body a02 and extends in the diagonal direction a25 approaching the main body a02.
The horizontal joint a03 forms the above-mentioned fitting groove a10 along the vertical direction a05 of the main body a02 by the first wall portion a19, the second wall portion a22, and the third wall portion a26.
On the other hand, the horizontal joint a04 has an arm portion a28 extending in the lateral direction a27 away from the main body a02 at the other side edge a07, and the hook-shaped portion a13 described above.
The hook-shaped portion a13 bends from the tip a29 of the arm portion a28 in the detour direction a17 of the main body a02 and extends in the diagonal direction a30 approaching the main body a02.
With the above structure, the fitting groove a10 is relatively inserted from the side as shown by the arrow a11 in FIG. 2, and is further rotated relative to the fitting groove a12 as shown by the arrow a12 in FIG. As shown in, a fitting structure of a fitting that can be fitted is configured. The basics of the fitting structure of this joint are the same as those described in Patent Document 1, and the opening width dimension, the back side dimension, the claw shape at the tip of the hook-shaped portion a13, the maximum width dimension, etc. of the fitting groove a10 are set. Design and implement as appropriate.
The horizontal direction (a14, a27) is a direction perpendicular to the vertical direction (a05) and the detour direction (a17).
＜縦継手＞
図４から図６に示すように鋼矢板ａ０１は、縦方向ａ０５に継ぐための嵌合構造による縦継手ｇ０１、ｇ０２を縦方向の端部ｇ０３、ｇ０４に備える。この嵌合構造は、メス型縦継手ｇ０１と、オス型縦継手ｇ０２による。図４には、縦継手ｇ０１、ｇ０２が未嵌合の状態を、図５には縦継手ｇ０１、ｇ０２が嵌合した状態を、図６には接合面Ａ－Ａの断面図を示す。
<Vertical joint>
As shown in FIGS. 4 to 6, the steel sheet pile a01 is provided with vertical joints g01 and g02 having a fitting structure for joining in the vertical direction a05 at the vertical end portions g03 and g04. This fitting structure is based on a female vertical joint g01 and a male vertical joint g02. FIG. 4 shows a state in which the vertical joints g01 and g02 are not fitted, FIG. 5 shows a state in which the vertical joints g01 and g02 are fitted, and FIG. 6 shows a cross-sectional view of the joint surfaces AA.
鋼矢板ａ０１は、迂回方向ａ１７側を背面、その逆方向ａ２４側を腹面と呼ぶ。
メス型縦継手ｇ０１は、本体ａ０２の背面側に配置された継手部材ｇ０５と、腕部ａ１５の腹面側に配置された継手部材ｇ０６と、腕部ａ２８の腹面側に配置された継手部材ｇ０７とからなる。これらの継手部材には、メス側係止爪ｇ１１が含まれる。
オス型縦継手ｇ０２は、本体ａ０２の背面側に配置された継手部材ｇ０８と、腕部ａ１５の腹面側に配置された継手部材ｇ０９と、腕部ａ２８の腹面側に配置された継手部材ｇ１０とからなる。これらの継手部材には、オス側係止爪ｇ１２が含まれる。
図４(b)に示す状態から、端部ｇ０３と端部ｇ０４とが縦方向ａ０５に接近する過程において、メス型縦継手ｇ０１が弾性変形して開き、図５に示すようにメス側係止爪ｇ１１とオス側係止爪ｇ１２とが係合して、端部ｇ０３と端部ｇ０４とが縦方向ａ０５に離れないように係止される。この弾性嵌合は特許文献１に記載のものと同様である。
以上のように、縦継手を構成する部材は、本体ａ０２の迂回方向ａ１７の逆方向ａ２４に面する腕部ａ１５，ａ２８の腕部腹面側に配置されており、係止爪ｇ１１、ｇ１２は、腕部腹面側に配置されている。
また、縦継手を構成する部材は、本体ａ０２の迂回方向ａ１７に面する本体背面側にも、配置されており、係止爪ｇ１１、ｇ１２が、本体背面側と、腕部腹面側とに配置されている。
In the steel sheet pile a01, the detour direction a17 side is called the back surface, and the opposite direction a24 side is called the ventral surface.
The female vertical joint g01 includes a joint member g05 arranged on the back surface side of the main body a02, a joint member g06 arranged on the ventral surface side of the arm portion a15, and a joint member g07 arranged on the ventral surface side of the arm portion a28. Consists of. These joint members include a female side locking claw g11.
The male vertical joint g02 includes a joint member g08 arranged on the back surface side of the main body a02, a joint member g09 arranged on the ventral surface side of the arm portion a15, and a joint member g10 arranged on the ventral surface side of the arm portion a28. Consists of. These joint members include a male side locking claw g12.
From the state shown in FIG. 4B, in the process in which the end portion g03 and the end portion g04 approach the vertical direction a05, the female vertical joint g01 elastically deforms and opens, and as shown in FIG. 5, the female side is locked. The claw g11 and the male side locking claw g12 are engaged with each other, and the end portion g03 and the end portion g04 are locked so as not to be separated from each other in the vertical direction a05. This elastic fitting is the same as that described in Patent Document 1.
As described above, the members constituting the vertical joint are arranged on the ventral side of the arms a15 and a28 facing the opposite direction a24 of the detour direction a17 of the main body a02, and the locking claws g11 and g12 are arranged. It is located on the ventral side of the arm.
Further, the members constituting the vertical joint are also arranged on the back surface side of the main body facing the detour direction a17 of the main body a02, and the locking claws g11 and g12 are arranged on the back surface side of the main body and the ventral surface side of the arm. Has been done.
以上の縦継手ｇ０１、ｇ０２によれば、本体ａ０２の横方向（ａ１４，ａ２７）及び縦方向ａ０５に垂直な嵌合構造の嵌合幅寸法ｇ１３（図５）が本体背面から腕部腹面までの寸法ｇ１４（図５）以上である。
したがって、縦継手ｇ０１、ｇ０２による縦継部の剛性が大きくなり曲げに強い。
また、図６に示すように鋼矢板ａ０１が土圧などの外力を受けて曲げ応力が発生する際の中立面ｇ１５は、平面ａ０８と平行になるが、縦継手ｇ０１、ｇ０２を構成する部材ｇ０５‐ｇ１０が中立面ｇ１５に平行であるから、縦継手ｇ０１、ｇ０２における応力集中が避けられる。
以上により、縦継手ｇ０１、ｇ０２における局所的な高い応力の発生を防ぎ、当該縦継手ｇ０１、ｇ０２による縦継部の連結強度を向上させることができる。すなわち、縦継手ｇ０１、ｇ０２による縦継部の連結を壊すに必要な外力が高くなる。
According to the above vertical joints g01 and g02, the fitting width dimension g13 (FIG. 5) of the fitting structure perpendicular to the lateral direction (a14, a27) and the vertical direction a05 of the main body a02 is from the back surface of the main body to the ventral surface of the arm. The size is g14 (FIG. 5) or more.
Therefore, the rigidity of the vertical joint portion due to the vertical joints g01 and g02 is increased, and the vertical joint is resistant to bending.
Further, as shown in FIG. 6, the neutral surface g15 when the steel sheet pile a01 receives an external force such as earth pressure and a bending stress is generated is parallel to the plane a08, but the members constituting the vertical joints g01 and g02. Since g05-g10 is parallel to the neutral plane g15, stress concentration in the vertical joints g01 and g02 can be avoided.
As described above, it is possible to prevent the generation of locally high stress in the vertical joints g01 and g02 and improve the connection strength of the vertical joint portion by the vertical joints g01 and g02. That is, the external force required to break the connection of the vertical joints by the vertical joints g01 and g02 is increased.
背面側の部材ｇ０５，ｇ０８に発生する応力と、腹面側の部材ｇ０６，ｇ０７，ｇ０９，ｇ１０に発生する応力との不均衡を軽減するために、以下の条件とすることが好ましい。
図６に示すように、背面側の部材ｇ０５，ｇ０８の中立面ｇ１５からの距離をｇ１６、腹面側の部材ｇ０６，ｇ０７，ｇ０９，ｇ１０の中立面ｇ１５からの距離をｇ１７とする。
本体背面側に配置された縦継手を構成する部材ｇ０５，ｇ０８の本体ａ０２の横方向（ａ１４，ａ２７）に沿った嵌合長さｇ１８と、両側の腕部腹面側に配置された縦継手を構成する部材ｇ０６，ｇ０７，ｇ０９，ｇ１０の本体ａ０２の横方向（ａ１４，ａ２７）に沿った嵌合長さｇ１９、ｇ２０の合計との大小関係が、当該各部材の中立面ｇ１５からの距離ｇ１６，ｇ１７の大小関係に従う。
すなわち、（距離ｇ１６）＞（距離ｇ１７）のとき、（嵌合長さｇ１８）＞（嵌合長さｇ１９）＋（嵌合長さｇ２０）であり、
（距離ｇ１６）＜（距離ｇ１７）のとき、（嵌合長さｇ１８）＜（嵌合長さｇ１９）＋（嵌合長さｇ２０）である。
（距離ｇ１６）＝（距離ｇ１７）のときは、（嵌合長さｇ１８）＝（嵌合長さｇ１９）＋（嵌合長さｇ２０）とすることが理想である。
In order to reduce the imbalance between the stress generated in the members g05 and g08 on the back surface side and the stress generated in the members g06, g07, g09 and g10 on the ventral surface side, the following conditions are preferable.
As shown in FIG. 6, the distance from the neutral surface g15 of the members g05 and g08 on the back surface side is g16, and the distance from the neutral surface g15 of the members g06, g07, g09 and g10 on the ventral surface side is g17.
The fitting length g18 along the lateral direction (a14, a27) of the main body a02 of the members g05 and g08 constituting the vertical joint arranged on the back side of the main body and the vertical joint arranged on the ventral side of the arms on both sides are provided. The magnitude relationship between the fitting lengths g19 and g20 along the lateral direction (a14, a27) of the main body a02 of the constituent members g06, g07, g09, and g10 is the distance from the neutral surface g15 of each member. It follows the magnitude relationship of g16 and g17.
That is, when (distance g16)> (distance g17), (fitting length g18)> (fitting length g19) + (fitting length g20).
When (distance g16) <(distance g17), (fitting length g18) <(fitting length g19) + (fitting length g20).
When (distance g16) = (distance g17), it is ideal that (fitting length g18) = (fitting length g19) + (fitting length g20).
以上の鋼矢板ａ０１によれば、本体ａ０２に配置された縦継手を構成する部材ｇ０５，ｇ０８は、本体背面側にのみ配置されている。なおかつ、腕部ａ１５，ａ２８に配置された縦継手を構成する部材ｇ０６，ｇ０７，ｇ０９，ｇ１０は、腕部腹面側にのみ配置されている。したがって、最大限の嵌合幅寸法ｇ１３を確保しつつ、簡素な構成で実現できる。 According to the steel sheet pile a01 described above, the members g05 and g08 constituting the vertical joint arranged in the main body a02 are arranged only on the back surface side of the main body. Moreover, the members g06, g07, g09, and g10 constituting the vertical joint arranged on the arms a15 and a28 are arranged only on the ventral side of the arm. Therefore, it can be realized with a simple configuration while ensuring the maximum fitting width dimension g13.
〔第２実施形態〕
上記の第１実施形態においては、本体腹面側に縦継手を構成する部材を配置しなかったが、以下の第２実施形態のように本体腹面側に縦継手を構成する部材を配置してもよい。
図７から図９に第２実施形態の鋼矢板を示す。
図７から図９に示す鋼矢板ｈ０１にあっては、縦継手は、部材ｈ０３‐ｈ１０により構成されている。
本体ｈ０２に配置された縦継手を構成する部材ｈ０３‐ｈ０６は、本体背面側及びその反対面である本体腹面側に配置されている。部材ｈ０３，ｈ０４，ｈ０７，ｈ０９がメス型縦継手を鋼矢板ｈ０１の一端部に構成する。部材ｈ０５，ｈ０６，ｈ０８，ｈ１０がオス型縦継手を鋼矢板ｈ０１の他端部に構成する。
一方の横継手の腕部ｈ１１に配置された縦継手を構成する部材ｈ０７，ｈ０８は、腕部腹面側にのみ配置されている。
他方の横継手の腕部ｈ１２に配置された縦継手を構成する部材ｈ０９，ｈ１０は、腕部腹面側にのみ配置されている。
部材ｈ０５と部材ｈ０６とは一部品で構成されており、鋼矢板ｈ０１の縦方向の端面に溶接されている。部材ｈ０８も鋼矢板ｈ０１の縦方向の端面に溶接されている。
図９に示すように各部材に係止爪が設けられている。これに拘わらず、本体腹面側の部材ｈ０４、ｈ０６については係止爪を設けず、特許文献１に記載されるように挿入ガイドとしてもよい。
なお、図８には、延長継手ｈ１３を図示するが、腕部ｈ１２自体を長く形成してもよい。
[Second Embodiment]
In the above first embodiment, the member constituting the vertical joint is not arranged on the ventral surface side of the main body, but even if the member constituting the vertical joint is arranged on the ventral surface side of the main body as in the second embodiment below. good.
7 to 9 show the steel sheet piles of the second embodiment.
In the steel sheet pile h01 shown in FIGS. 7 to 9, the vertical joint is composed of the members h03-h10.
The members h03-h06 constituting the vertical joint arranged on the main body h02 are arranged on the back surface side of the main body and the ventral surface side of the main body, which is the opposite surface thereof. Members h03, h04, h07, h09 form a female vertical joint at one end of the steel sheet pile h01. The members h05, h06, h08, and h10 form a male vertical joint at the other end of the steel sheet pile h01.
The members h07 and h08 constituting the vertical joint arranged on the arm portion h11 of one of the horizontal joints are arranged only on the ventral surface side of the arm portion.
The members h09 and h10 constituting the vertical joint arranged on the arm portion h12 of the other horizontal joint are arranged only on the ventral surface side of the arm portion.
The member h05 and the member h06 are composed of one part, and are welded to the end face of the steel sheet pile h01 in the vertical direction. The member h08 is also welded to the vertical end face of the steel sheet pile h01.
As shown in FIG. 9, each member is provided with a locking claw. Notwithstanding this, the members h04 and h06 on the ventral surface side of the main body may not be provided with the locking claws and may be used as insertion guides as described in Patent Document 1.
Although the extension joint h13 is shown in FIG. 8, the arm portion h12 itself may be formed long.
以上の第１実施形態においては、左右の横継手は非対称であり、図３に示すように横方向に連結される複数の鋼矢板ａ０１，ａ０１は、本体の迂回方向が同じ向きで連結し、鋼矢板連続壁の幅が鋼矢板ａ０１の幅（図５のｇ１４に相当（縦継手の突出量含まず））に相当するとともに、縦継手が鋼矢板連続壁の最外縁に配置される。第２実施形態において横方向に連結される複数の鋼矢板は、本体ｈ０２の迂回方向が交互に逆向きで連結し、鋼矢板連続壁の幅が鋼矢板ｈ０１の幅ｈ１４の２倍弱に相当するとともに、横継手及び腕部ｈ１１，ｈ１２の縦継手が鋼矢板連続壁の中央に配置される。これは従来周知であるので図示を省略する。 In the above first embodiment, the left and right horizontal joints are asymmetric, and as shown in FIG. 3, the plurality of steel sheet piles a01 and a01 connected in the lateral direction are connected in the same detour direction of the main body. The width of the steel sheet pile continuous wall corresponds to the width of the steel sheet pile a01 (corresponding to g14 in FIG. 5 (excluding the protrusion amount of the vertical joint)), and the vertical joint is arranged at the outermost edge of the steel sheet pile continuous wall. In the second embodiment, the plurality of steel sheet piles connected in the lateral direction are connected in the opposite directions alternately in the detour direction of the main body h02, and the width of the continuous steel sheet pile wall corresponds to a little less than twice the width h14 of the steel sheet pile h01. At the same time, the horizontal joint and the vertical joint of the arm portions h11 and h12 are arranged in the center of the steel sheet pile continuous wall. Since this is well known in the past, the illustration is omitted.
ａ０１ 鋼矢板
ａ０２ 本体
ａ０３，ａ０４横継手
ａ０５ 縦方向
ａ０６，ａ０７本体の両側縁
ａ１４ 横方向
ａ１５ 腕部
ａ１７ 迂回方向
ａ２４ 迂回方向の逆方向
ａ２７ 横方向
ａ２８ 腕部
ｇ０１ メス型縦継手
ｇ０２ オス型縦継手
ｇ０５‐ｇ１０ 縦継手を構成する部材
ｇ１１ メス側係止爪
ｇ１２ オス側係止爪
ｇ１３ 嵌合幅寸法
ｇ１５ 中立面
ｈ０１ 鋼矢板
ｈ０２ 本体
ｈ０３‐ｈ１０ 縦継手を構成する部材部材
ｈ１１，ｈ１２ 横継手の腕部
a01 Steel sheet pile a02 Main body a03, a04 Horizontal joint a05 Vertical direction a06, a07 Both side edges of the main body a14 Lateral a15 Arm a17 Detour direction a24 Reverse direction a27 Horizontal a28 Arm g01 Female vertical joint g02 Male vertical Joint g05-g10 Member that constitutes a vertical joint g11 Female side locking claw g12 Male side locking claw g13 Fitting width dimension g15 Neutral surface h01 Steel sheet pile h02 Main body h03-h10 Member member h11, h12 that constitutes a vertical joint Fitting arm
Claims (2)
縦方向に継ぐための嵌合構造による縦継手を縦方向の端部に備え、
前記横継手は、横方向に延びる腕部を有し、
少なくとも、前記腕部における縦方向の端部に、係止爪を含む前記縦継手を構成する部材が配置され、
前記縦継手を構成する部材は、前記本体の迂回方向に面する本体背面側と、前記本体の迂回方向の逆方向に面する前記腕部の腕部腹面側とに配置され、
前記本体の横方向及び縦方向に垂直な前記嵌合構造の嵌合幅寸法が前記本体背面から前記腕部腹面までの寸法以上であり、
前記係止爪が、前記本体背面側と、前記腕部腹面側とに配置され、
前記本体に配置された前記縦継手を構成する部材は、前記本体背面側にのみ配置され、
前記腕部に配置された前記縦継手を構成する部材は、前記腕部腹面側にのみ配置され、
それぞれの前記縦継手は、前記鋼矢板の縦方向の端部が他の鋼矢板の縦方向の端部に接近する過程において、前記本体の横方向及び縦方向に垂直な方向に弾性変形して開き、前記係止爪が係止する鋼矢板。 A steel sheet pile having a semi-circular cross section in which horizontal joints are extended on both side edges along the vertical direction of the main body and the main body detours to one side with respect to a plane passing through the both side edges.
A vertical joint with a fitting structure for vertical joints is provided at the vertical end.
The horizontal joint has an arm portion extending laterally and has an arm portion.
At least at the vertical end of the arm, a member constituting the vertical joint including a locking claw is arranged.
The members constituting the vertical joint are arranged on the back surface side of the main body facing the detour direction of the main body and the ventral side of the arm portion facing the opposite direction of the detour direction of the main body.
The fitting width dimension of the fitting structure perpendicular to the lateral and vertical directions of the main body is equal to or larger than the dimension from the back surface of the main body to the ventral surface of the arm .
The locking claws are arranged on the back surface side of the main body and the ventral surface side of the arm.
The members constituting the vertical joint arranged on the main body are arranged only on the back surface side of the main body.
The members constituting the vertical joint arranged on the arm portion are arranged only on the ventral surface side of the arm portion.
Each of the vertical joints is elastically deformed in the horizontal and vertical directions of the main body in the process in which the vertical end of the steel sheet pile approaches the vertical end of the other steel sheet pile. A steel sheet pile that opens and locks the locking claws .
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| JP2015036501A (en) | 2013-08-15 | 2015-02-23 | 新日鐵住金株式会社 | Jig for inhibiting deformation during driving of steel sheet pile |
| JP2015140517A (en) | 2014-01-27 | 2015-08-03 | 新日鐵住金株式会社 | steel sheet pile foundation structure |
| WO2017038629A1 (en) | 2015-08-28 | 2017-03-09 | 新日鐵住金株式会社 | Vertical joint structure of hat-type steel sheet piling, vertically joined hat-type steel sheet piling unit, and steel wall |
| JP2017186794A (en) | 2016-04-06 | 2017-10-12 | 新日鐵住金株式会社 | Vertical connection construction method and restraining member |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| JP2013167082A (en) | 2012-02-15 | 2013-08-29 | Giken Seisakusho Co Ltd | Pile joint, joint for steel component, pile joining method, and steel component joining method |
| JP2015036501A (en) | 2013-08-15 | 2015-02-23 | 新日鐵住金株式会社 | Jig for inhibiting deformation during driving of steel sheet pile |
| JP2015140517A (en) | 2014-01-27 | 2015-08-03 | 新日鐵住金株式会社 | steel sheet pile foundation structure |
| WO2017038629A1 (en) | 2015-08-28 | 2017-03-09 | 新日鐵住金株式会社 | Vertical joint structure of hat-type steel sheet piling, vertically joined hat-type steel sheet piling unit, and steel wall |
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