JP7496559B2

JP7496559B2 - Steel pipe member connection structure and steel pipe member connection method

Info

Publication number: JP7496559B2
Application number: JP2022111404A
Authority: JP
Inventors: 勤伍内藤; 浩行内藤; 研二平田; 秀彰坂井
Original assignee: Yunitec Corp
Current assignee: Yunitec Corp
Priority date: 2022-07-11
Filing date: 2022-07-11
Publication date: 2024-06-07
Anticipated expiration: 2042-07-11
Also published as: JP2024009699A

Description

この発明は、鋼管部材の連結構造および鋼管部材の連結方法に関する。 This invention relates to a connection structure for steel pipe members and a method for connecting steel pipe members.

柱などに用いられる鋼管部材を上下方向に連結（接合）する構造として、例えば特許文献１に示すように、上鋼管部材の端部と下鋼管部材の端部とを工事現場で溶接して連結する溶接継手構造が広く用いられている。 As a structure for vertically connecting (joining) steel pipe members used for pillars, etc., a welded joint structure in which the end of the upper steel pipe member and the end of the lower steel pipe member are welded together at the construction site, as shown in Patent Document 1, for example, is widely used.

特開平４－３２７３９７号公報Japanese Patent Application Laid-Open No. 4-327397

特許文献１に示される溶接継手構造では、工事現場における屋外作業（以下、単に屋外作業という）による溶接を必要とする。そのため、天候の影響を受けて工期が長くなること、熟練した溶接工を必要とすること、溶接品質が安定しないこと、溶接部に対する超音波探傷試験等の現場検査を必要とすることなどの課題を有する。 The welded joint structure shown in Patent Document 1 requires welding to be done outdoors at the construction site (hereinafter simply referred to as outdoors). This has problems such as longer construction time due to the effects of weather, the need for skilled welders, unstable weld quality, and the need for on-site inspection such as ultrasonic testing of the welded parts.

また、近年、地球温暖化を防止するために、工事現場においても、温室効果ガスとして働く二酸化炭素の排出量を削減することが求められている。溶接作業では、二酸化炭素がシールドガスとして用いられるともに、溶接自体に多量の電気を消費する。化石燃料を用いた発電では、多くの二酸化炭素が排出される。屋外作業による溶接は、工場における屋内作業（以下、単に屋内作業という）による溶接よりも溶接時間が長くなるため、二酸化炭素の排出量が多くなるという課題を有する。 In recent years, in order to prevent global warming, there has been a demand to reduce emissions of carbon dioxide, a greenhouse gas, even at construction sites. In welding work, carbon dioxide is used as a shielding gas, and the welding itself consumes a large amount of electricity. Power generation using fossil fuels emits a lot of carbon dioxide. Outdoor welding work has the problem of emitting more carbon dioxide because the welding time is longer than indoor welding work in a factory (hereinafter simply referred to as indoor welding work).

そこで、この発明の課題は、屋外作業による溶接を不要とする、鋼管部材の連結構造および鋼管部材の連結方法を提供することである。 The objective of this invention is to provide a steel pipe member connection structure and a steel pipe member connection method that do not require outdoor welding work.

上記課題を解決するため、この発明の一態様に係る鋼管部材の連結構造は、
第１方向に延在する第１鋼管部材の第１側端部に固定される第１継手部材と、前記第１鋼管部材に対向配置されて前記第１方向に延在する第２鋼管部材の第２側端部に固定される第２継手部材とを有する第１連結部材と、
前記第１連結部材に対して着脱可能に構成される複数の第２連結部材と、を備え、
前記第１継手部材は、前記第１側端部に固定される第１固定端部と、前記第１固定端部に対して前記第１方向における反対側に位置して前記第１方向に直交する第２方向の外向きに突出する第１連結端部と、前記第１固定端部と前記第１連結端部との間の外側面に設けられて周方向に沿って延在する第１周回溝とを有し、
前記第２継手部材は、前記第２側端部に固定される第２固定端部と、前記第２固定端部に対して前記第１方向における反対側に位置して前記第２方向の外向きに突出する第２連結端部と、前記第２固定端部と前記第２連結端部との間の外側面に設けられて周方向に沿って延在する第２周回溝とを有し、
前記第２連結部材は、前記第１連結端部および前記第２連結端部を対面させた対面状態において、前記第１周回溝に挿入されて係合する第１凸部と、前記第２周回溝に挿入されて係合する第２凸部と、前記第１凸部および前記第２凸部を前記第１方向につなぐ係合接続部とを有し、
前記複数の前記第２連結部材を前記第１連結部材に装着することによって、前記第１鋼管部材および前記第２鋼管部材を連結させることを特徴とする。 In order to solve the above problems, a connection structure for steel pipe members according to one embodiment of the present invention comprises:
A first connecting member having a first joint member fixed to a first side end of a first steel pipe member extending in a first direction and a second joint member arranged opposite the first steel pipe member and fixed to a second side end of a second steel pipe member extending in the first direction;
A plurality of second connecting members configured to be detachable from the first connecting member,
the first joint member has a first fixed end portion fixed to the first side end portion, a first connecting end portion located on the opposite side of the first fixed end portion in the first direction and protruding outward in a second direction perpendicular to the first direction, and a first circumferential groove provided on an outer surface between the first fixed end portion and the first connecting end portion and extending along a circumferential direction,
the second joint member has a second fixed end portion fixed to the second side end portion, a second connecting end portion located on the opposite side of the second fixed end portion in the first direction and protruding outward in the second direction, and a second circumferential groove provided on an outer surface between the second fixed end portion and the second connecting end portion and extending along a circumferential direction,
the second connecting member has a first convex portion that is inserted into and engaged with the first circumferential groove in a facing state in which the first connecting end portion and the second connecting end portion are faced to each other, a second convex portion that is inserted into and engaged with the second circumferential groove, and an engaging connection portion that connects the first convex portion and the second convex portion in the first direction,
The present invention is characterized in that the first steel pipe member and the second steel pipe member are connected by attaching the plurality of second connecting members to the first connecting member.

この発明によれば、複数の第２連結部材を第１連結部材に装着することによって第１鋼管部材および第２鋼管部材を連結できるので、屋外作業による溶接が不要になり、安定した高品質な連結が得られ、二酸化炭素の排出量を削減できる。 According to this invention, the first steel pipe member and the second steel pipe member can be connected by attaching multiple second connecting members to the first connecting member, which eliminates the need for outdoor welding work, provides a stable, high-quality connection, and reduces carbon dioxide emissions.

この発明の第１実施形態に係る鋼管部材の連結構造を示す模式的断面図である。1 is a schematic cross-sectional view showing a connection structure of steel pipe members according to a first embodiment of the present invention. FIG. 連結構造を説明する模式的斜視図である。FIG. 2 is a schematic perspective view illustrating a connection structure. 連結構造を説明する模式的平面図である。FIG. 2 is a schematic plan view illustrating a connection structure. エレクションピースを用いた鋼管部材の仮固定を説明する模式的平面図である。FIG. 1 is a schematic plan view illustrating temporary fixing of a steel pipe member using an erection piece. 図４に示した仮固定の要部を説明する模式的側面図である。FIG. 5 is a schematic side view illustrating a main part of the temporary fixation shown in FIG. 4 . 第２実施形態に係る連結構造の要部を示す拡大側面図である。FIG. 11 is an enlarged side view showing a main part of a connecting structure according to a second embodiment. 図６のＶＩＩ－ＶＩＩ線に沿った断面図である。7 is a cross-sectional view taken along line VII-VII in FIG. 6. この発明に係る鋼管部材の連結方法を説明するフローチャートである。4 is a flowchart illustrating a method for connecting steel pipe members according to the present invention. 第３実施形態に係る連結構造を示す模式的断面図である。FIG. 11 is a schematic cross-sectional view showing a connection structure according to a third embodiment. 図９に示した連結構造を説明する模式的平面図である。FIG. 10 is a schematic plan view illustrating the connection structure shown in FIG. 9 .

以下、図面を参照しながら、この発明に係る鋼管部材１，２の連結構造１０の実施の形態を説明する。なお、以下の説明では、必要に応じて特定の方向あるいは位置を示す用語（例えば、「上」、「下」、「右」、「左」、「前」、「後」を含む用語）を用いるが、それらの用語の使用は、図面を参照した本開示の理解を容易にするためであって、それらの用語の意味によって本開示の技術的範囲が限定されるものではない。また、以下の説明は、単なる例示に過ぎず、本開示、その適用物、あるいは、その用途を制限することを意図するものではない。さらに、図面は模式的なものであり、各部材や部分の寸法比率などは、現実のものとは必ずしも合致するものではない。 Below, an embodiment of a connection structure 10 for steel pipe members 1, 2 according to the present invention will be described with reference to the drawings. In the following description, terms indicating specific directions or positions (e.g., terms including "up," "down," "right," "left," "front," and "rear") will be used as necessary, but the use of these terms is for the purpose of making it easier to understand this disclosure with reference to the drawings, and the meaning of these terms does not limit the technical scope of this disclosure. In addition, the following description is merely illustrative and is not intended to limit this disclosure, its applications, or its uses. Furthermore, the drawings are schematic, and the dimensional ratios of each member and part do not necessarily correspond to the actual ones.

〔第１実施形態〕
図１から図３を参照しながら、第１実施形態に係る鋼管部材１，２の連結構造１０を説明する。 First Embodiment
A connection structure 10 for steel pipe members 1, 2 according to a first embodiment will be described with reference to Figs. 1 to 3 .

図１は、この発明の第１実施形態に係る鋼管部材１，２の連結構造１０を示す模式的断面図である。図２は、連結構造１０を説明する模式的斜視図である。図３は、連結構造１０を説明する模式的平面図である。 Figure 1 is a schematic cross-sectional view showing a connection structure 10 for steel pipe members 1 and 2 according to a first embodiment of the present invention. Figure 2 is a schematic perspective view illustrating the connection structure 10. Figure 3 is a schematic plan view illustrating the connection structure 10.

工事現場において第１鋼管部材１の端部および第２鋼管部材２の端部を突き合わせて鋼管部材１，２を第１方向（例えば、長手方向、上下方向）に順次連結（接合）することで建造物の柱を構築する場合において、この発明に係る連結構造１０を適用する実施の形態を説明する。 This section describes an embodiment in which the connection structure 10 of the present invention is applied to a case where a column of a building is constructed at a construction site by butting the end of a first steel pipe member 1 with the end of a second steel pipe member 2 and sequentially connecting (joining) the steel pipe members 1 and 2 in a first direction (e.g., the longitudinal direction, the up-down direction).

図１から図３に示すように、連結構造１０は、第１連結部材７と、複数の第２連結部材５と、を備える。第１連結部材７は、連結構造１０の内側に位置して、第１継手部材３および第２継手部材４を有する。複数の第２連結部材５は、連結構造１０の外側に位置して、第１連結部材７に対して着脱可能に構成される。第１連結部材７および第２連結部材５は、例えば、第１鋼管部材１および第２鋼管部材２と同じ材質であり、鋼材からなる。 As shown in Figures 1 to 3, the connecting structure 10 includes a first connecting member 7 and a plurality of second connecting members 5. The first connecting member 7 is located inside the connecting structure 10 and has a first joint member 3 and a second joint member 4. The plurality of second connecting members 5 are located outside the connecting structure 10 and are configured to be detachable from the first connecting member 7. The first connecting member 7 and the second connecting member 5 are made of the same material as the first steel pipe member 1 and the second steel pipe member 2, for example, and are made of steel.

図１および図２において、第１鋼管部材１は、柱の上側部分に対応して第１方向（長手方向、上下方向）に延びる中空の角形鋼管であり、第２鋼管部材２は、柱の下側部分に対応して第１方向（長手方向、上下方向）に延びる中空の角形鋼管である。工事現場では、第２鋼管部材２は、第１方向（長手方向、上下方向）において第１鋼管部材１に対向配置される。第１鋼管部材１および第２鋼管部材２は、第１方向（長手方向、上下方向）に対して直交する第２方向（例えば、長手直交方向、左右方向）の断面が同じ形状および同じ寸法を有する。第１鋼管部材１および第２鋼管部材２は、直線状の柱辺部および湾曲形状の柱コーナー部を有する多角形断面形状を有し、例えば、４つの柱辺部および４つの柱コーナー部を有する大略四角形断面形状を有する。なお、第１鋼管部材１および第２鋼管部材２の概略断面形状は、正方形や長方形の四角形に限らず、三角形、五角形、六角形、七角形、八角形などであってもよい。 1 and 2, the first steel pipe member 1 is a hollow square steel pipe extending in a first direction (longitudinal direction, vertical direction) corresponding to the upper part of the column, and the second steel pipe member 2 is a hollow square steel pipe extending in the first direction (longitudinal direction, vertical direction) corresponding to the lower part of the column. At the construction site, the second steel pipe member 2 is arranged opposite the first steel pipe member 1 in the first direction (longitudinal direction, vertical direction). The first steel pipe member 1 and the second steel pipe member 2 have the same shape and the same dimensions in the cross section in the second direction (e.g., the longitudinal orthogonal direction, left-right direction) perpendicular to the first direction (longitudinal direction, vertical direction). The first steel pipe member 1 and the second steel pipe member 2 have a polygonal cross-sectional shape with straight column side parts and curved column corner parts, for example, a roughly rectangular cross-sectional shape with four column side parts and four column corner parts. The general cross-sectional shape of the first steel pipe member 1 and the second steel pipe member 2 is not limited to a square or rectangular shape, but may be a triangle, pentagon, hexagon, heptagon, octagon, etc.

第１連結部材７は、直線状に延在する内側辺部と、内側辺部に連なるとともに湾曲形状を有する内側コーナー部とを有する。第１連結部材７の内側コーナー部は、第２連結部材５の連結コーナー部５ｂを収容可能に切り欠かれた切欠部７ｍを有する。第１連結部材７は、第１継手部材３および第２継手部材４の連結によって構成される。 The first connecting member 7 has an inner side portion that extends in a straight line and an inner corner portion that is connected to the inner side portion and has a curved shape. The inner corner portion of the first connecting member 7 has a notch portion 7m that is cut out so that the connecting corner portion 5b of the second connecting member 5 can be accommodated. The first connecting member 7 is formed by connecting the first joint member 3 and the second joint member 4.

第１継手部材３は、第１鋼管部材１の下端に位置する第１側端部１ａの内側面に対して、例えば全周に形成される溶接部８によって固定される。第２継手部材４は、第２鋼管部材２の上端に位置する第２側端部２ａの内側面に対して、例えば全周に形成される溶接部８によって固定される。なお、後述するように、溶接部８を形成するための溶接は、天候の影響を受ける屋外作業ではなくて、天候の影響を受けない屋内作業によって行われる。 The first joint member 3 is fixed to the inner surface of the first side end 1a located at the lower end of the first steel pipe member 1, for example, by a weld 8 formed around the entire circumference. The second joint member 4 is fixed to the inner surface of the second side end 2a located at the upper end of the second steel pipe member 2, for example, by a weld 8 formed around the entire circumference. As will be described later, the welding to form the weld 8 is not performed outdoors, which is affected by the weather, but indoors, which is not affected by the weather.

第１継手部材３は、第１鋼管部材１の第１側端部１ａでの第２方向（長手直交方向、左右方向）の断面形状に対応した多角形断面形状を有する。第１継手部材３は、第１方向（長手方向、上下方向）の断面が、外側に向けて開口するＵ字形状を有する。第１継手部材３は、第１固定端部３ｃと、第１中央部３ｄと、第１連結端部３ｅとを有する。 The first joint member 3 has a polygonal cross-sectional shape corresponding to the cross-sectional shape in the second direction (perpendicular to the longitudinal direction, left-right direction) at the first side end 1a of the first steel pipe member 1. The first joint member 3 has a U-shaped cross section in the first direction (longitudinal direction, up-down direction) that opens outward. The first joint member 3 has a first fixed end 3c, a first central portion 3d, and a first connecting end 3e.

第１固定端部３ｃは、第１鋼管部材１の第１側端部１ａの側に位置する。第１固定端部３ｃは、第２方向（長手直交方向、左右方向）の外向きに突出した形状を有するが、第１固定端部３ｃの外側面は、第１鋼管部材１の外側面と面一になるように構成される。第１固定端部３ｃの上端部は、第１鋼管部材１の第１側端部１ａとの溶接に使用される。第１連結端部３ｅは、第１固定端部３ｃに対して第１方向（長手方向、上下方向）における反対側に位置して第２方向の外向きに突出する。第１中央部３ｄは、第１固定端部３ｃと第１連結端部３ｅとを第１方向（長手方向、上下方向）につなぐように第１継手部材３の第１方向（長手方向、上下方向）の中央部に位置する。第１中央部３ｄは、第１固定端部３ｃと第１連結端部３ｅとの間の外側面に設けられて周方向に沿って延在する第１周回溝３ｆを有する。 The first fixed end 3c is located on the side of the first side end 1a of the first steel pipe member 1. The first fixed end 3c has a shape that protrudes outward in the second direction (longitudinal orthogonal direction, left-right direction), but the outer surface of the first fixed end 3c is configured to be flush with the outer surface of the first steel pipe member 1. The upper end of the first fixed end 3c is used for welding to the first side end 1a of the first steel pipe member 1. The first connecting end 3e is located on the opposite side in the first direction (longitudinal direction, up-down direction) to the first fixed end 3c and protrudes outward in the second direction. The first central portion 3d is located in the center of the first joint member 3 in the first direction (longitudinal direction, up-down direction) so as to connect the first fixed end 3c and the first connecting end 3e in the first direction (longitudinal direction, up-down direction). The first central portion 3d has a first circumferential groove 3f that is provided on the outer surface between the first fixed end 3c and the first connecting end 3e and extends along the circumferential direction.

第２継手部材４は、第２鋼管部材２の第２側端部２ａでの第２方向（長手直交方向、左右方向）の断面形状に対応した多角形断面形状を有する。第２継手部材４は、第１方向（長手方向、上下方向）の断面が、外側に向けて開口するＵ字形状を有する。第２継手部材４は、第２固定端部４ｃと、第２中央部４ｄと、第２連結端部４ｅとを有する。 The second joint member 4 has a polygonal cross-sectional shape corresponding to the cross-sectional shape in the second direction (perpendicular to the longitudinal direction, left-right direction) at the second side end 2a of the second steel pipe member 2. The second joint member 4 has a U-shaped cross-section in the first direction (longitudinal direction, up-down direction) that opens outward. The second joint member 4 has a second fixed end 4c, a second central portion 4d, and a second connecting end 4e.

第２固定端部４ｃは、第２鋼管部材２の第２側端部２ａの側に位置する。第２固定端部４ｃは、第２方向（長手直交方向、左右方向）の外向きに突出した形状を有するが、第２固定端部４ｃの外側面は、第２鋼管部材２の外側面と面一になるように構成される。第２固定端部４ｃの下端部は、第２鋼管部材２の第２側端部２ａとの溶接に使用される。第２連結端部４ｅは、第２固定端部４ｃに対して第１方向（長手方向、上下方向）における反対側に位置して第２方向の外向きに突出する。第２中央部４ｄは、第２固定端部４ｃと第２連結端部４ｅとを第１方向（長手方向、上下方向）につなぐように第２継手部材４の第１方向（長手方向、上下方向）の中央部に位置する。第２中央部４ｄは、第２固定端部４ｃと第２連結端部４ｅとの間の外側面に設けられて周方向に沿って延在する第２周回溝４ｆを有する。 The second fixed end 4c is located on the side of the second side end 2a of the second steel pipe member 2. The second fixed end 4c has a shape that protrudes outward in the second direction (longitudinal orthogonal direction, left-right direction), but the outer surface of the second fixed end 4c is configured to be flush with the outer surface of the second steel pipe member 2. The lower end of the second fixed end 4c is used for welding to the second side end 2a of the second steel pipe member 2. The second connecting end 4e is located on the opposite side in the first direction (longitudinal direction, up-down direction) to the second fixed end 4c and protrudes outward in the second direction. The second central portion 4d is located in the center of the second joint member 4 in the first direction (longitudinal direction, up-down direction) so as to connect the second fixed end 4c and the second connecting end 4e in the first direction (longitudinal direction, up-down direction). The second central portion 4d has a second circumferential groove 4f that is provided on the outer surface between the second fixed end 4c and the second connecting end 4e and extends along the circumferential direction.

第１継手部材３および第２継手部材４が連結される場合、第１連結端部３ｅおよび第２連結端部４ｅが対面する対面状態にあるとともに、第１連結端部３ｅおよび第２連結端部４ｅが実質的に当接する当接状態になる。第１連結端部３ｅおよび第２連結端部４ｅの対面によって、外側に向けて突出するとともに周方向に沿って延在する、断面が矩形の連結凸部７ｅが形成される。 When the first joint member 3 and the second joint member 4 are connected, the first connecting end 3e and the second connecting end 4e face each other, and the first connecting end 3e and the second connecting end 4e are in abutting contact. The facing of the first connecting end 3e and the second connecting end 4e forms a connecting protrusion 7e with a rectangular cross section that protrudes outward and extends circumferentially.

第２継手部材４は、ガイド部６をさらに有する。ガイド部６は、上方に位置する第１鋼管部材１に固定された第１継手部材３を第２継手部材４に対してガイドする。これにより、下方の第２鋼管部材２に対する、上方の第１鋼管部材１の位置決めが容易になる。ガイド部６は、図１に示すように、第１方向（長手方向、上下方向）に延在する板形状を有して、第２継手部材４の内側面に固定される。ガイド部６は、例えば溶接によって固定される。ガイド部６は、図３に示すように、第２継手部材４のコーナー部付近に配設される。例えば、第２継手部材４のコーナー部付近のそれぞれに対して２個のガイド部６が離間して配設され、合計８個のガイド部６が配設される。 The second joint member 4 further has a guide portion 6. The guide portion 6 guides the first joint member 3, which is fixed to the first steel pipe member 1 located above, relative to the second joint member 4. This makes it easier to position the upper first steel pipe member 1 relative to the lower second steel pipe member 2. As shown in FIG. 1, the guide portion 6 has a plate shape extending in the first direction (longitudinal direction, vertical direction) and is fixed to the inner surface of the second joint member 4. The guide portion 6 is fixed, for example, by welding. As shown in FIG. 3, the guide portion 6 is disposed near the corner portion of the second joint member 4. For example, two guide portions 6 are disposed at a distance from each other near each corner portion of the second joint member 4, for a total of eight guide portions 6.

ガイド部６の外側上部は、上部が下部よりも大きく開口するように斜めに切り欠かれた傾斜部６ａを有する。ガイド部６の傾斜部６ａは、第１継手部材３を第２継手部材４に対して位置決めするときに、第１継手部材３の内側面に摺接して第１継手部材３を所定の位置に案内することを容易にする。 The outer upper part of the guide part 6 has an inclined part 6a that is cut diagonally so that the upper part opens larger than the lower part. When positioning the first joint member 3 relative to the second joint member 4, the inclined part 6a of the guide part 6 slides against the inner surface of the first joint member 3, making it easy to guide the first joint member 3 to the specified position.

図３に示すように、複数の第２連結部材５は、連結構造１０の外側に位置して、第１連結部材７の形状に対応して配設される。複数の第２連結部材５として、例えば４個の第２連結部材５が配設される。第２連結部材５のそれぞれは、第１連結部材７に対して着脱可能に構成されるように、言い換えると、第１連結部材７に装着したり、第１連結部材７から取り外したりすることができるように構成される。第２連結部材５に対して係合状態にある第１連結部材７から第２連結部材５を引き出すための引っ掛かり部（例えば凹部）を第２連結部材５の外側面に配設することもできる。 As shown in FIG. 3, the multiple second connecting members 5 are located outside the connecting structure 10 and are arranged to correspond to the shape of the first connecting member 7. For example, four second connecting members 5 are arranged as the multiple second connecting members 5. Each of the second connecting members 5 is configured to be detachable from the first connecting member 7, in other words, configured to be attached to and detached from the first connecting member 7. A hook portion (e.g., a recess) for pulling out the second connecting member 5 from the first connecting member 7 engaged with the second connecting member 5 can also be arranged on the outer surface of the second connecting member 5.

図２に示すように、第２連結部材５は、第１連結部材７での第２方向（長手直交方向、左右方向）の断面形状に対応した形状を有する。第２連結部材５は、第１連結部材７に対応する直線状の連結辺部５ａおよび湾曲形状の連結コーナー部５ｂを有する。したがって、第２連結部材５は、直線状に延在する連結辺部５ａと、連結辺部５ａに連なるとともに湾曲形状を有する連結コーナー部５ｂとを有する。 As shown in FIG. 2, the second connecting member 5 has a shape corresponding to the cross-sectional shape of the first connecting member 7 in the second direction (direction perpendicular to the longitudinal direction, left-right direction). The second connecting member 5 has a linear connecting side portion 5a corresponding to the first connecting member 7 and a curved connecting corner portion 5b. Therefore, the second connecting member 5 has a connecting side portion 5a that extends linearly and a connecting corner portion 5b that is connected to the connecting side portion 5a and has a curved shape.

図１および図２に示すように、第２連結部材５は、第１方向（長手方向、上下方向）の断面が、内側に向けて開口するＵ字形状を有する。第２連結部材５は、第１凸部５ｃと、係合接続部５ｄと、第２凸部５ｅとを有する。第１凸部５ｃは、第１鋼管部材１の第１側端部１ａの側に位置する。第１凸部５ｃは、第２方向（長手直交方向、左右方向）の内側に突出した凸形状を有する。第２凸部５ｅは、第２鋼管部材２の第２側端部２ａの側に位置する。第２凸部５ｅは、第２方向（長手直交方向、左右方向）の内側に突出した凸形状を有する。係合接続部５ｄは、第１凸部５ｃと第２凸部５ｅとを第１方向（長手方向、上下方向）につなぐように第２連結部材５の第１方向（長手方向、上下方向）の中央部に位置する。 1 and 2, the second connecting member 5 has a U-shape in cross section in the first direction (longitudinal direction, vertical direction) that opens inward. The second connecting member 5 has a first convex portion 5c, an engaging connection portion 5d, and a second convex portion 5e. The first convex portion 5c is located on the side of the first side end portion 1a of the first steel pipe member 1. The first convex portion 5c has a convex shape that protrudes inward in the second direction (longitudinal direction, left-right direction). The second convex portion 5e is located on the side of the second side end portion 2a of the second steel pipe member 2. The second convex portion 5e has a convex shape that protrudes inward in the second direction (longitudinal direction, left-right direction). The engaging connection portion 5d is located in the center of the second connecting member 5 in the first direction (longitudinal direction, vertical direction) so as to connect the first convex portion 5c and the second convex portion 5e in the first direction (longitudinal direction, vertical direction).

第２連結部材５の外側面は、第１固定端部３ｃの外側面および第２固定端部４ｃの外側面と面一になるように構成される。したがって、第１鋼管部材１、第１継手部材３、第２連結部材５、第２継手部材４および第２鋼管部材２の各外側面が面一になるように構成される。好ましくは、第２連結部材５の厚みは、第１鋼管部材１および第２鋼管部材２の厚みに対して同じ厚みかそれ以上の厚みである。厚みを同じ厚みにすることにより、建築基準法で要求される所定の強度を確保できる。また、厚みをそれ以上の厚みにすることにより、厚みが異なる様々な鋼管部材１，２にも対応でき、第２連結部材５の標準化が可能になる。 The outer surface of the second connecting member 5 is configured to be flush with the outer surface of the first fixed end 3c and the outer surface of the second fixed end 4c. Therefore, the outer surfaces of the first steel pipe member 1, the first joint member 3, the second connecting member 5, the second joint member 4, and the second steel pipe member 2 are configured to be flush with each other. Preferably, the thickness of the second connecting member 5 is the same as or greater than the thickness of the first steel pipe member 1 and the second steel pipe member 2. By making the thickness the same, the specified strength required by the Building Standards Act can be ensured. Furthermore, by making the thickness greater than this, it is possible to accommodate various steel pipe members 1 and 2 with different thicknesses, making it possible to standardize the second connecting member 5.

第２連結部材５は、内側に突出する第１凸部５ｃと、第１方向（長手方向、上下方向）に延在する係合接続部５ｄと、内側に突出する第２凸部５ｅによって形成される凹部５ｆとを有する。凹部５ｆは、対面状態にある第１連結端部３ｅおよび第２連結端部４ｅによって構成される連結凸部７ｅに対して着脱可能に係合する着脱係合部として働く。凹部５ｆは、第１連結部材７の矩形状の連結凸部７ｅにおける第２方向（長手直交方向、左右方向）の外形形状に沿って延在する矩形状の溝である。したがって、矩形状の凹部５ｆは、対面状態にある第１連結端部３ｅおよび第２連結端部４ｅによって形成される矩形状の連結凸部７ｅに係合するように構成されている。 The second connecting member 5 has a first convex portion 5c that protrudes inward, an engaging connection portion 5d that extends in a first direction (longitudinal direction, up-down direction), and a concave portion 5f formed by the second convex portion 5e that protrudes inward. The concave portion 5f acts as a detachable engaging portion that detachably engages with the connecting convex portion 7e formed by the first connecting end portion 3e and the second connecting end portion 4e that are in a facing state. The concave portion 5f is a rectangular groove that extends along the outer shape of the rectangular connecting convex portion 7e of the first connecting member 7 in the second direction (longitudinal orthogonal direction, left-right direction). Therefore, the rectangular concave portion 5f is configured to engage with the rectangular connecting convex portion 7e formed by the first connecting end portion 3e and the second connecting end portion 4e that are in a facing state.

図１および図２に示すように、連結構造１０は、抜け止め構造を有する。抜け止め構造は、第１継手部材３の第１張り出し部３ｈおよび第２継手部材４の第２張り出し部４ｈと、第２連結部材５の面取り部５ｈとの組み合わせによって構成される。第１張り出し部３ｈは、外側下方に向けて斜めに張り出しており、抜け止め部として働く。第２張り出し部４ｈは、外側上方に向けて斜めに張り出しており、抜け止め部として働く。 As shown in Figures 1 and 2, the connecting structure 10 has a slip-out prevention structure. The slip-out prevention structure is formed by a combination of the first protruding portion 3h of the first joint member 3 and the second protruding portion 4h of the second joint member 4, and the chamfered portion 5h of the second connecting member 5. The first protruding portion 3h protrudes diagonally outward and downward, and acts as a slip-out prevention portion. The second protruding portion 4h protrudes diagonally outward and upward, and acts as a slip-out prevention portion.

上側の面取り部５ｈは、外側下方に向けて斜めに切り欠かれた形状を有し、第１張り出し部３ｈに係合する。下側の面取り部５ｈは、外側上方に向けて斜めに切り欠かれた形状を有し、第２張り出し部４ｈに係合する。これにより、係合状態にある第２連結部材５が第１連結部材７に対して第２方向（長手直交方向、左右方向）の外側から抜け出ることを防止できる。 The upper chamfered portion 5h is cut outwardly and obliquely downward, and engages with the first protruding portion 3h. The lower chamfered portion 5h is cut outwardly and obliquely upward, and engages with the second protruding portion 4h. This prevents the second connecting member 5, which is in an engaged state, from slipping out from the outside in the second direction (orthogonal to the longitudinal direction, left-right direction) relative to the first connecting member 7.

第１継手部材３の第１張り出し部３ｈには、第１切欠部３ｍが配設される。第２継手部材４の第２張り出し部４ｈにも、第２切欠部４ｍが配設される。第１切欠部３ｍおよび第２切欠部４ｍは、第２連結部材５の連結コーナー部５ｂに対応する部分を切り欠くことで形成される。第１切欠部３ｍおよび第２切欠部４ｍからなる切欠部７ｍが、第１連結部材７に配設される。これにより、第２連結部材５の連結コーナー部５ｂは、切欠部７ｍと干渉することなく、第１連結部材７の内側コーナー部に装着される。 A first notch 3m is provided in the first protruding portion 3h of the first joint member 3. A second notch 4m is also provided in the second protruding portion 4h of the second joint member 4. The first notch 3m and the second notch 4m are formed by cutting out a portion corresponding to the connecting corner portion 5b of the second connecting member 5. A notch 7m consisting of the first notch 3m and the second notch 4m is provided in the first connecting member 7. As a result, the connecting corner portion 5b of the second connecting member 5 is attached to the inner corner portion of the first connecting member 7 without interfering with the notch 7m.

図２および図３に示すように、複数の第２連結部材５のそれぞれは、第２方向（長手直交方向、左右方向）における挿入方向Ｆに沿って第１連結部材７に装着される。例えば、図３において、各第２連結部材５は、１の挿入方向Ｆから４の挿入方向Ｆの順番で装着される。すなわち、第１の第２連結部材５を１の挿入方向Ｆに装着し、第２の第２連結部材５を２の挿入方向Ｆに装着し、第３の第２連結部材５を３の挿入方向Ｆに装着し、最後に第４の第２連結部材５を４の挿入方向Ｆに装着する。 As shown in Figures 2 and 3, each of the multiple second connecting members 5 is attached to the first connecting member 7 along the insertion direction F in the second direction (orthogonal to the longitudinal direction, left-right direction). For example, in Figure 3, each second connecting member 5 is attached in the order of insertion direction F 1 to insertion direction F 4. That is, the first second connecting member 5 is attached in insertion direction F 1, the second second connecting member 5 is attached in insertion direction F 2, the third second connecting member 5 is attached in insertion direction F 3, and finally the fourth second connecting member 5 is attached in insertion direction F 4.

１の挿入方向Ｆに係る第１の第２連結部材５の連結辺部５ａの端面５ｍは、２の挿入方向Ｆに係る第２の第２連結部材５の連結コーナー部５ｂの端面５ｍに対向して当接する。１の挿入方向Ｆに係る第１の第２連結部材５の連結コーナー部５ｂの端面５ｍは、４の挿入方向Ｆに係る第４の第２連結部材５の連結辺部５ａの端面５ｍに対向して当接する。このとき、隣接する第２連結部材５の端面５ｍ同士が干渉するように、端面５ｍを第１方向（長手方向、上下方向）に対して傾斜している傾斜面にすることができる。これにより、第２連結部材５が第１連結部材７から抜け出にくくなる。 The end face 5m of the connecting side portion 5a of the first second connecting member 5 in the insertion direction F of 1 faces and abuts against the end face 5m of the connecting corner portion 5b of the second second connecting member 5 in the insertion direction F of 2. The end face 5m of the connecting corner portion 5b of the first second connecting member 5 in the insertion direction F of 1 faces and abuts against the end face 5m of the connecting side portion 5a of the fourth second connecting member 5 in the insertion direction F of 4. At this time, the end faces 5m can be made into inclined surfaces that are inclined with respect to the first direction (longitudinal direction, up-down direction) so that the end faces 5m of adjacent second connecting members 5 interfere with each other. This makes it difficult for the second connecting member 5 to come out of the first connecting member 7.

〔第２実施形態〕
図６および図７を参照しながら、第２実施形態に係る連結構造１０を説明する。図６は、第２実施形態に係る連結構造１０の要部を示す拡大側面図である。図７は、図６のＶＩＩ－ＶＩＩ線に沿った断面図である。 Second Embodiment
A connection structure 10 according to a second embodiment will be described with reference to Fig. 6 and Fig. 7. Fig. 6 is an enlarged side view showing a main part of the connection structure 10 according to the second embodiment. Fig. 7 is a cross-sectional view taken along line VII-VII in Fig. 6.

第２実施形態に係る連結構造１０では、ジョイント部材９の使用が上記第１実施形態と相違しているだけであり、その他の構成は上記第１実施形態と同じである。したがって、上記第１実施形態との相違点を中心に説明する。 The connecting structure 10 according to the second embodiment differs from the first embodiment only in the use of the joint member 9, and the other configurations are the same as those of the first embodiment. Therefore, the following description will focus on the differences from the first embodiment.

図６に示すように、或る第２連結部材５と、隣接する第２連結部材５とを接続するために、ジョイント部材９が使用されている。ジョイント部材９は、或る第２連結部材５の連結コーナー部５ｂに対応するジョイントコーナー部と、隣接する第２連結部材５の連結辺部５ａに対応するジョイント辺部とを有する板状体である。ジョイント部材９のジョイントコーナー部およびジョイント辺部のそれぞれには、厚み方向に貫通する座ぐり穴９ａが形成される。 As shown in FIG. 6, a joint member 9 is used to connect a second connecting member 5 to an adjacent second connecting member 5. The joint member 9 is a plate-like body having a joint corner portion corresponding to the connecting corner portion 5b of a second connecting member 5 and a joint side portion corresponding to the connecting side portion 5a of the adjacent second connecting member 5. A countersunk hole 9a is formed in each of the joint corner portion and the joint side portion of the joint member 9, penetrating in the thickness direction.

或る第２連結部材５の連結コーナー部５ｂの端面５ｍの側と、隣接する第２連結部材５の連結辺部５ａの端面５ｍの側には、ジョイント凹部２９が形成されている。ジョイント凹部２９は、ジョイント部材９を収容可能なように構成されている。ジョイント部材９をジョイント凹部２９に収容した状態では、例えば、ジョイント部材９の外側面は、第２連結部材５の外側面と面一である。また、連結コーナー部５ｂの端面５ｍおよび連結辺部５ａの端面５ｍは、第１方向（長手方向、上下方向）に延在する。 A joint recess 29 is formed on the side of the end face 5m of the connecting corner portion 5b of a certain second connecting member 5 and on the side of the end face 5m of the connecting side portion 5a of an adjacent second connecting member 5. The joint recess 29 is configured to be able to accommodate a joint member 9. When the joint member 9 is accommodated in the joint recess 29, for example, the outer surface of the joint member 9 is flush with the outer surface of the second connecting member 5. In addition, the end face 5m of the connecting corner portion 5b and the end face 5m of the connecting side portion 5a extend in the first direction (longitudinal direction, up-down direction).

ジョイント部材９の座ぐり穴９ａに対応するネジ穴が、例えば、或る第２連結部材５の連結コーナー部５ｂの係合接続部５ｄおよび隣接する第２連結部材５の連結辺部５ａの係合接続部５ｄにそれぞれ形成される。ジョイント部材９をジョイント凹部２９に収容した状態で、複数のジョイントボルト１９を用いてジョイント部材９を第２連結部材５の連結コーナー部５ｂおよび連結辺部５ａに対して、ボルト止めで固定できる。これにより、或る第２連結部材５と隣接する第２連結部材５とを確実に接続して、係合状態にある第２連結部材５が第１連結部材７に対して第２方向（長手直交方向、左右方向）の外側に抜け出ることを防止できる。 A screw hole corresponding to the countersunk hole 9a of the joint member 9 is formed, for example, in the engaging connection portion 5d of the connecting corner portion 5b of a certain second connecting member 5 and the engaging connection portion 5d of the connecting side portion 5a of an adjacent second connecting member 5. With the joint member 9 housed in the joint recess 29, the joint member 9 can be bolted to the connecting corner portion 5b and the connecting side portion 5a of the second connecting member 5 using a plurality of joint bolts 19. This ensures that a certain second connecting member 5 and an adjacent second connecting member 5 are connected together, and prevents the second connecting member 5 in the engaged state from slipping outward in the second direction (the direction perpendicular to the longitudinal direction, the left-right direction) relative to the first connecting member 7.

〔第３実施形態〕
図９および図１０を参照しながら、第３実施形態に係る連結構造１０を説明する。図９は、第３実施形態に係る連結構造１０を示す模式的断面図である。図１０は、図９に示した連結構造１０を説明する模式的平面図である。 Third Embodiment
A connection structure 10 according to a third embodiment will be described with reference to Fig. 9 and Fig. 10. Fig. 9 is a schematic cross-sectional view showing the connection structure 10 according to the third embodiment. Fig. 10 is a schematic plan view showing the connection structure 10 shown in Fig. 9.

第３実施形態に係る連結構造１０では、第１鋼管部材１および第２鋼管部材２が丸形鋼管であることと、第２連結部材５の使用数とが上記第１実施形態と相違しており、その他の構成は上記第１実施形態と同じである。したがって、上記第１実施形態との相違点を中心に説明する。 The connection structure 10 according to the third embodiment differs from the first embodiment in that the first steel pipe member 1 and the second steel pipe member 2 are round steel pipes and in the number of second connection members 5 used, but the rest of the configuration is the same as the first embodiment. Therefore, the following description will focus on the differences from the first embodiment.

図９および図１０に示すように、連結構造１０は、第１連結部材７と、２つの第２連結部材５と、を備える。第１連結部材７は、連結構造１０の内側に位置して、第１継手部材３および第２継手部材４を有する。２つの第２連結部材５は、連結構造１０の外側に位置して、第１連結部材７に対して第２方向（長手直交方向、左右方向）の挿入方向Ｆから着脱可能に構成される。 As shown in Figures 9 and 10, the connecting structure 10 includes a first connecting member 7 and two second connecting members 5. The first connecting member 7 is located inside the connecting structure 10 and has a first joint member 3 and a second joint member 4. The two second connecting members 5 are located outside the connecting structure 10 and are configured to be detachable from the first connecting member 7 in an insertion direction F in a second direction (perpendicular to the longitudinal direction, left-right direction).

図９および図１０に示すように、第１鋼管部材１は、柱の上側部分に対応して第１方向（長手方向、上下方向）に延びる中空の丸形鋼管であり、第２鋼管部材２は、柱の下側部分に対応して第１方向（長手方向、上下方向）に延びる中空の丸形鋼管である。 As shown in Figures 9 and 10, the first steel pipe member 1 is a hollow round steel pipe that extends in a first direction (longitudinal direction, up-down direction) corresponding to the upper part of the column, and the second steel pipe member 2 is a hollow round steel pipe that extends in the first direction (longitudinal direction, up-down direction) corresponding to the lower part of the column.

第１連結部材７は、図１０に示すように、平面視で、大略円形状を有する。第１連結部材７の外側面は、第１鋼管部材１および第２鋼管部材２の外側面と面一である。第１連結部材７の上側部分および下側部分のそれぞれは、中心側にシフトした状態で第２方向（長手直交方向、左右方向）に直線状に延在している。 As shown in FIG. 10, the first connecting member 7 has a generally circular shape in plan view. The outer surface of the first connecting member 7 is flush with the outer surfaces of the first steel pipe member 1 and the second steel pipe member 2. The upper and lower parts of the first connecting member 7 each extend linearly in the second direction (the direction perpendicular to the longitudinal direction, the left-right direction) while being shifted toward the center.

第２連結部材５は、図１０に示すように、平面視で、大略半円形状を有する。第２連結部材５の外側面は、第１鋼管部材１および第２鋼管部材２の外側面と面一である。第２連結部材５の一側および他側の先端部分のそれぞれは、中心側にシフトした状態で第２方向（長手直交方向、左右方向）に直線状に延在している。一側および他側の先端部分のそれぞれには、ジョイント凹部２９が形成される。左側に位置する第２連結部材５と、右側に位置する第２連結部材５とが、左右対称に構成されている。 As shown in FIG. 10, the second connecting member 5 has a roughly semicircular shape in plan view. The outer surface of the second connecting member 5 is flush with the outer surfaces of the first steel pipe member 1 and the second steel pipe member 2. The tip portions on one side and the other side of the second connecting member 5 each extend linearly in the second direction (direction perpendicular to the longitudinal direction, left-right direction) while shifted toward the center. A joint recess 29 is formed in each of the tip portions on one side and the other side. The second connecting member 5 located on the left side and the second connecting member 5 located on the right side are configured symmetrically.

２つの第２連結部材５は、第２方向（長手直交方向、左右方向）の挿入方向Ｆから第１連結部材７に装着される。これにより、第２連結部材５が第１連結部材７に係合して連結構造１０を構成できる。上記第２実施形態と同様に、ジョイント部材９をジョイント凹部２９に収容した状態で、図示しない複数のジョイントボルトを用いてジョイント部材９を第２連結部材５の一側および他側の先端部分に対して、ボルト止めで固定できる。これにより、左側に位置する第２連結部材５と右側に位置する第２連結部材５とを確実に接続して、係合状態にある第２連結部材５が第１連結部材７に対して第２方向（長手直交方向、左右方向）の外側に抜け出ることを防止できる。 The two second connecting members 5 are attached to the first connecting member 7 from the insertion direction F in the second direction (longitudinal orthogonal direction, left-right direction). This allows the second connecting members 5 to engage with the first connecting members 7 to form the connecting structure 10. As in the second embodiment, with the joint member 9 housed in the joint recess 29, the joint member 9 can be bolted to the tip portions of one and the other sides of the second connecting member 5 using a plurality of joint bolts (not shown). This ensures that the second connecting member 5 located on the left side and the second connecting member 5 located on the right side are connected to each other, and prevents the second connecting member 5 in the engaged state from slipping outward in the second direction (longitudinal orthogonal direction, left-right direction) relative to the first connecting member 7.

〔鋼管部材の連結方法〕
図４、図５および図８を参照しながら、この発明に係る鋼管部材１，２の連結方法を説明する。図４は、エレクションピース１１，１２を用いた鋼管部材１，２の仮固定を説明する模式的平面図である。図５は、図４に示した仮固定の要部を説明する模式的側面図である。図８は、この発明に係る鋼管部材１，２の連結方法を説明するフローチャートである。 [Method of connecting steel pipe members]
The method for connecting steel pipe members 1 and 2 according to the present invention will be described with reference to Figures 4, 5 and 8. Figure 4 is a schematic plan view illustrating the temporary fixing of steel pipe members 1 and 2 using erection pieces 11 and 12. Figure 5 is a schematic side view illustrating the main parts of the temporary fixing shown in Figure 4. Figure 8 is a flow chart illustrating the method for connecting steel pipe members 1 and 2 according to the present invention.

図８に示すように、ステップＳ１では、連結構造１０による第１鋼管部材１および第２鋼管部材２の連結工程が開始される。 As shown in FIG. 8, in step S1, the process of connecting the first steel pipe member 1 and the second steel pipe member 2 using the connecting structure 10 begins.

ステップＳ３では、第２連結部材５の凹部５ｆが第１連結部材７の連結凸部７ｅに係合することによって、第１連結部材７と複数の第２連結部材５とを着脱可能に一体化させる一体化工程が行われる。 In step S3, the recess 5f of the second connecting member 5 engages with the connecting protrusion 7e of the first connecting member 7, thereby performing an integration process in which the first connecting member 7 and the multiple second connecting members 5 are detachably integrated.

ステップＳ５では、第２連結部材５および第１連結部材７の一体化物を、互いに対向する第１鋼管部材１および第２鋼管部材２の間にセットするセッティング工程が行われる。第１連結部材７の一方を構成する第１継手部材３の第１固定端部３ｃが第１鋼管部材１の第１側端部１ａに対面し、第１連結部材７の他方を構成する第２継手部材４の第２固定端部４ｃが第２鋼管部材２の第２側端部２ａに対面するように一体化物がセットされる。このとき、第１鋼管部材１と第２鋼管部材２とが、非常に正確に第１方向（長手方向、上下方向）に延在するように、高精度に位置決めされる。 In step S5, a setting process is performed in which the integrated second connecting member 5 and first connecting member 7 are set between the opposing first steel pipe member 1 and second steel pipe member 2. The integrated member is set so that the first fixed end 3c of the first joint member 3 constituting one side of the first connecting member 7 faces the first side end 1a of the first steel pipe member 1, and the second fixed end 4c of the second joint member 4 constituting the other side of the first connecting member 7 faces the second side end 2a of the second steel pipe member 2. At this time, the first steel pipe member 1 and the second steel pipe member 2 are positioned with high precision so that they extend very accurately in the first direction (longitudinal direction, up-down direction).

ステップＳ７では、第１エレクションピース１１および第２エレクションピース１２を用いた第１鋼管部材１および第２鋼管部材２の仮固定工程が行われる。ここで、図４および図５を参照しながら、仮固定工程について説明する。 In step S7, a temporary fixing process is performed for the first steel pipe member 1 and the second steel pipe member 2 using the first erection piece 11 and the second erection piece 12. Here, the temporary fixing process will be described with reference to Figures 4 and 5.

図４および図５に示すように、第１エレクションピース１１および第２エレクションピース１２のそれぞれが、高精度に位置決めされた状態にある第１鋼管部材１および第２鋼管部材２に対して、例えば溶接で固定される。第１エレクションピース１１および第２エレクションピース１２は、第１方向（長手方向、上下方向）に延在する板形状を有する。第１エレクションピース１１および第２エレクションピース１２は、第１鋼管部材１および第２鋼管部材２の各側面部から垂直に突出するとともに、非常に正確に第１方向（長手方向、上下方向）に延在するように配設される。第１エレクションピース１１および第２エレクションピース１２のそれぞれには、複数のボルト挿通孔が形成される。ボルト挿通孔は、第１エレクションピース１１および第２エレクションピース１２の板厚方向を貫通するように形成される。 As shown in FIG. 4 and FIG. 5, the first erection piece 11 and the second erection piece 12 are fixed, for example, by welding, to the first steel pipe member 1 and the second steel pipe member 2, which are positioned with high precision. The first erection piece 11 and the second erection piece 12 have a plate shape extending in the first direction (longitudinal direction, vertical direction). The first erection piece 11 and the second erection piece 12 are arranged so that they protrude vertically from each side portion of the first steel pipe member 1 and the second steel pipe member 2 and extend very accurately in the first direction (longitudinal direction, vertical direction). A plurality of bolt insertion holes are formed in each of the first erection piece 11 and the second erection piece 12. The bolt insertion holes are formed so as to penetrate the plate thickness direction of the first erection piece 11 and the second erection piece 12.

第１エレクションピース１１および第２エレクションピース１２のそれぞれは、一対のスプライスプレート１３，１３で挟持されて、ボルト挿通孔に挿通される仮ボルト１５と、仮ボルト１５に螺合する仮ナット１６とによってボルト止めされる。第１エレクションピース１１の外側には第１フランジ１１ａが配設され、第２エレクションピース１２の外側には第２フランジ１２ａが配設される。第１フランジ１１ａおよび第２フランジ１２ａは、連結ボルト１７および連結ナット１８によってボルト止めされる。これらのボルト止めによって、第１エレクションピース１１および第２エレクションピース１２は、一体的に仮固定される。仮ボルト１５および連結ボルト１７には、例えば高力ボルトが使用される。 The first erection piece 11 and the second erection piece 12 are each clamped by a pair of splice plates 13, 13, and bolted together by a temporary bolt 15 inserted into the bolt insertion hole and a temporary nut 16 screwed onto the temporary bolt 15. A first flange 11a is disposed on the outside of the first erection piece 11, and a second flange 12a is disposed on the outside of the second erection piece 12. The first flange 11a and the second flange 12a are bolted together by a connecting bolt 17 and a connecting nut 18. By these bolts, the first erection piece 11 and the second erection piece 12 are temporarily fixed together. For example, high-strength bolts are used for the temporary bolts 15 and the connecting bolts 17.

ステップＳ９では、上記の仮固定状態で、第１連結部材７の第１継手部材３を第１鋼管部材１に溶接で固定するとともに、第１連結部材７の第２継手部材４を第２鋼管部材２に溶接で固定するという固定工程が行われる。このとき、第１継手部材３の第１固定端部３ｃと第１鋼管部材１の第１側端部１ａとの間で溶接部８が形成されるとともに、第２継手部材４の第２固定端部４ｃと第２鋼管部材２の第２側端部２ａとの間で溶接部８が形成される。これにより、連結構造１０を介して高精度に位置決めされた第１鋼管部材１および第２鋼管部材２は、非常に正確に第１方向（長手方向、上下方向）に延在する。 In step S9, in the above-mentioned provisionally fixed state, a fixing process is performed in which the first joint member 3 of the first connecting member 7 is fixed to the first steel pipe member 1 by welding, and the second joint member 4 of the first connecting member 7 is fixed to the second steel pipe member 2 by welding. At this time, a welded portion 8 is formed between the first fixed end portion 3c of the first joint member 3 and the first side end portion 1a of the first steel pipe member 1, and a welded portion 8 is formed between the second fixed end portion 4c of the second joint member 4 and the second side end portion 2a of the second steel pipe member 2. As a result, the first steel pipe member 1 and the second steel pipe member 2, which are positioned with high precision via the connecting structure 10, extend very accurately in the first direction (longitudinal direction, up-down direction).

なお、ステップＳ３からステップＳ９のいずれかのステップにおいて、第１連結部材７の各辺に対する各第２連結部材５の対応関係が直ちに分かるように、対応関係の目印となるマーキングを第２連結部材５に付すマーキング作業が行われる。これにより、第２連結部材５を第１連結部材７の正しい所定の位置に着脱可能になる。 In addition, in any of steps S3 to S9, a marking operation is performed to attach markings to the second connecting members 5 as indicators of the corresponding relationships so that the corresponding relationships of each second connecting member 5 to each side of the first connecting member 7 can be immediately determined. This makes it possible to attach and detach the second connecting members 5 to the correct predetermined positions of the first connecting member 7.

ステップＳ１１では、第１鋼管部材１および第２鋼管部材２を一体的に連結した連結構造１０において、全ての第２連結部材５を第１連結部材７から取り外して展開する展開工程が行われる。 In step S11, an unfolding process is carried out in which all second connecting members 5 are removed from the first connecting members 7 and unfolded in the connection structure 10 in which the first steel pipe member 1 and the second steel pipe member 2 are integrally connected.

ステップＳ１３では、展開された第１鋼管部材１と第２鋼管部材２と全ての第２連結部材５とを工事現場に運搬して、工事現場においてこれらを組み立てる組立工程が行われる。組立工程は、例えば、上方に位置する第１鋼管部材１と下方に位置する第２鋼管部材２とを第１方向（長手方向、上下方向）に立設させる立設工程と、この状態で全ての第２連結部材５を第１連結部材７に装着する装着工程を含む。 In step S13, the unfolded first steel pipe member 1, second steel pipe member 2, and all second connecting members 5 are transported to the construction site, where an assembly process is performed to assemble them. The assembly process includes, for example, an erecting process in which the upper first steel pipe member 1 and the lower second steel pipe member 2 are erected in the first direction (longitudinal direction, up-down direction), and an attachment process in which all second connecting members 5 are attached to the first connecting members 7 in this state.

ステップＳ１５では、第１エレクションピース１１および第２エレクションピース１２を用いた鋼管部材１，２の仮固定工程が行われる。ステップＳ１５の仮固定工程は、マーキングを付した第１鋼管部材１および第２鋼管部材２を連結構造１０によって一体的に連結したステップＳ９の状態に戻す（言い換えると、一体的な連結状態を再現する）ことを目的としている。したがって、ステップＳ７の仮固定工程のうち、スプライスプレート１３で挟持された第１エレクションピース１１および第２エレクションピース１２のボルト止めによる仮固定工程が行われる。 In step S15, a temporary fixing process of the steel pipe members 1 and 2 is performed using the first erection piece 11 and the second erection piece 12. The purpose of the temporary fixing process of step S15 is to return the marked first steel pipe member 1 and the second steel pipe member 2 to the state of step S9 in which they are integrally connected by the connection structure 10 (in other words, to reproduce the integral connection state). Therefore, during the temporary fixing process of step S7, a temporary fixing process is performed by bolting the first erection piece 11 and the second erection piece 12 that are clamped by the splice plate 13.

ステップＳ１７では、第１鋼管部材１および第２鋼管部材２を仮固定した状態で、マーキングを付した全ての第２連結部材５を、対応する第１連結部材７に装着することによって第２連結部材５および第１連結部材７を連結させる装着連結工程が行われる。 In step S17, with the first steel pipe member 1 and the second steel pipe member 2 temporarily fixed, an attachment and connection process is performed in which all the marked second connecting members 5 are attached to the corresponding first connecting members 7 to connect the second connecting members 5 and the first connecting members 7.

ステップＳ１９では、仮固定に使用したスプライスプレート１３のボルト止めを解除し、その後、第１エレクションピース１１および第２エレクションピース１２のそれぞれを第１鋼管部材１および第２鋼管部材２から溶断などによって切り離して除去する除去工程が行われる。 In step S19, the bolts of the splice plate 13 used for temporary fixation are released, and then a removal process is performed in which the first erection piece 11 and the second erection piece 12 are separated and removed from the first steel pipe member 1 and the second steel pipe member 2, respectively, by melting or the like.

ステップＳ２１では、連結構造１０による第１鋼管部材１および第２鋼管部材２の連結工程を終了する。 In step S21, the process of connecting the first steel pipe member 1 and the second steel pipe member 2 using the connecting structure 10 is completed.

上記一連の工程において、少なくともステップＳ９の固定工程における溶接が、屋内作業によって行われる。屋外作業による溶接が行われないので、安定した高品質な連結が得られ、二酸化炭素の排出量を削減できる。上記一連の工程において、好ましくはステップＳ３からステップＳ１１での全ての工程が、屋内作業によって行われる。これにより、屋外作業による溶接よりも、安定した高品質な連結が得られ、二酸化炭素の排出量を削減できる。また、非常に正確に第１方向（長手方向、上下方向）に延在して垂直度の高い柱を立設できる。 In the above series of steps, at least the welding in the fixing step of step S9 is performed indoors. Since no outdoor welding is performed, a stable, high-quality connection is obtained and carbon dioxide emissions can be reduced. In the above series of steps, preferably all steps from step S3 to step S11 are performed indoors. This allows a more stable, high-quality connection to be obtained than with outdoor welding and reduces carbon dioxide emissions. In addition, a pillar can be erected that extends very precisely in the first direction (longitudinal direction, up-down direction) and has a high degree of verticality.

高層ビルや高架橋などの高くそびえる建造物における柱は、上述した連結構造１０を用いて構築することができる。これにより、複数の第２連結部材５を第１連結部材７に装着することによって、第１鋼管部材１および第２鋼管部材２を連結できるので、屋外作業による溶接が不要になり、安定した高品質な連結が得られ、二酸化炭素の排出量を削減できる。 Columns in towering structures such as skyscrapers and viaducts can be constructed using the above-described connecting structure 10. This allows the first steel pipe member 1 and the second steel pipe member 2 to be connected by attaching multiple second connecting members 5 to the first connecting member 7, eliminating the need for outdoor welding work, providing a stable, high-quality connection, and reducing carbon dioxide emissions.

この発明の具体的な実施の形態について説明したが、この発明は、上記実施形態に限定されるものではなく、この発明の範囲内で種々変更して実施することができる。 Although specific embodiments of the present invention have been described, the present invention is not limited to the above embodiments and can be modified and implemented in various ways within the scope of the present invention.

一例として、この発明に係る連結構造１０を、鋼管部材１，２を第１方向（例えば、上下方向）に順次連結（接合）する建造物の柱に適用した場合について説明した。この発明に係る連結構造１０は、鋼管部材１，２を第２方向（例えば、左右方向）に順次連結（接合）する建造物の梁にも適用することができる。 As an example, the connection structure 10 according to the present invention has been described as being applied to a column of a building in which steel pipe members 1, 2 are sequentially connected (joined) in a first direction (e.g., the vertical direction). The connection structure 10 according to the present invention can also be applied to a beam of a building in which steel pipe members 1, 2 are sequentially connected (joined) in a second direction (e.g., the horizontal direction).

第１実施形態では、一例として、第２連結部材５が連結辺部５ａと連結コーナー部５ｂとを連続してつなげた構成を開示している。しかしながら、第２連結部材５は、連結辺部５ａと連結コーナー部５ｂとを分離して別体にした構成にすることができる。この場合、連結辺部５ａの端面５ｍと連結コーナー部５ｂの端面５ｍのそれぞれには、互いに係合するための凹凸状の係合部が形成される。連結辺部５ａおよび連結コーナー部５ｂの各端面５ｍにおける凹凸を係合させることによって第２連結部材５が組み立てられ、次の第２連結部材５もさらに組み立てられる。 In the first embodiment, as an example, a configuration is disclosed in which the second connecting member 5 continuously connects the connecting side portion 5a and the connecting corner portion 5b. However, the second connecting member 5 can be configured such that the connecting side portion 5a and the connecting corner portion 5b are separated and made into separate bodies. In this case, the end face 5m of the connecting side portion 5a and the end face 5m of the connecting corner portion 5b are each formed with an uneven engaging portion for engaging with each other. The second connecting member 5 is assembled by engaging the unevenness on each end face 5m of the connecting side portion 5a and the connecting corner portion 5b, and the next second connecting member 5 is also assembled.

最後の組立対象となる第２連結部材５の連結コーナー部５ｂの各端面５ｍと、最初の組立対象となった第２連結部材５の連結辺部５ａの端面５ｍとの係合構造は、それ以外の第２連結部材５における係合構造と若干相違している。すなわち、最初の連結辺部５ａおよび最後の連結コーナー部５ｂの各端面５ｍを、凹凸の無い平坦面にするととともに、最初の連結辺部５ａおよび最後の連結コーナー部５ｂを第２実施形態で説明したジョイント部材９を用いて接続することができる。これにより、最初の第２連結部材５と最後の第２連結部材５とを確実に接続して、係合状態にある第２連結部材５が第１連結部材７に対して第２方向（長手直交方向、左右方向）の外側に抜け出ることを防止できる。 The engagement structure between each end face 5m of the connecting corner portion 5b of the second connecting member 5 that is the last to be assembled and the end face 5m of the connecting side portion 5a of the second connecting member 5 that is the first to be assembled is slightly different from the engagement structure of the other second connecting members 5. That is, each end face 5m of the first connecting side portion 5a and the last connecting corner portion 5b is made flat without any irregularities, and the first connecting side portion 5a and the last connecting corner portion 5b can be connected using the joint member 9 described in the second embodiment. This ensures that the first second connecting member 5 and the last second connecting member 5 are connected reliably, and prevents the second connecting member 5 in the engaged state from slipping outward in the second direction (orthogonal to the longitudinal direction, left and right direction) relative to the first connecting member 7.

また、第３実施形態において、第２連結部材５を三等分や四等分などの複数に等分された円弧形状にして、隣接する第２連結部材５同士をジョイント部材９を用いて接続する構成にすることができる。 In addition, in the third embodiment, the second connecting member 5 can be configured to have an arc shape divided into multiple equal parts, such as thirds or fourths, and adjacent second connecting members 5 can be connected to each other using joint members 9.

この発明および実施形態をまとめると、次のようになる。 The invention and its embodiments can be summarized as follows:

この発明の第１態様に係る鋼管部材１，２の連結構造１０は、
第１方向に延在する第１鋼管部材１の第１側端部１ａに固定される第１継手部材３と、前記第１鋼管部材１に対向配置されて前記第１方向に延在する第２鋼管部材２の第２側端部２ａに固定される第２継手部材４とを有する第１連結部材７と、
前記第１連結部材７に対して着脱可能に構成される複数の第２連結部材５と、を備え、
前記第１継手部材３は、前記第１側端部１ａに固定される第１固定端部３ｃと、前記第１固定端部３ｃに対して前記第１方向における反対側に位置して前記第１方向に直交する第２方向の外向きに突出する第１連結端部３ｅと、前記第１固定端部３ｃと前記第１連結端部３ｅとの間の外側面に設けられて周方向に沿って延在する第１周回溝３ｆとを有し、
前記第２継手部材４は、前記第２側端部２ａに固定される第２固定端部４ｃと、前記第２固定端部４ｃに対して前記第１方向における反対側に位置して前記第２方向の外向きに突出する第２連結端部４ｅと、前記第２固定端部４ｃと前記第２連結端部４ｅとの間の外側面に設けられて周方向に沿って延在する第２周回溝４ｆとを有し、
前記第２連結部材５は、前記第１連結端部３ｅおよび前記第２連結端部４ｅを対面させた対面状態において、前記第１周回溝３ｆに挿入されて係合する第１凸部５ｃと、前記第２周回溝４ｆに挿入されて係合する第２凸部５ｅと、前記第１凸部５ｃおよび前記第２凸部５ｅを前記第１方向につなぐ係合接続部５ｄとを有し、
前記複数の前記第２連結部材５を前記第１連結部材７に装着することによって、前記第１鋼管部材１および前記第２鋼管部材２を連結させることを特徴とする。 The connection structure 10 of steel pipe members 1 and 2 according to the first aspect of the present invention is as follows:
A first connecting member 7 includes a first joint member 3 fixed to a first side end 1a of a first steel pipe member 1 extending in a first direction, and a second joint member 4 fixed to a second side end 2a of a second steel pipe member 2 arranged opposite the first steel pipe member 1 and extending in the first direction;
A plurality of second connecting members 5 configured to be detachable from the first connecting member 7,
The first joint member 3 has a first fixed end 3c fixed to the first side end 1a, a first connecting end 3e located on the opposite side of the first fixed end 3c in the first direction and protruding outward in a second direction perpendicular to the first direction, and a first circumferential groove 3f provided on an outer surface between the first fixed end 3c and the first connecting end 3e and extending along a circumferential direction,
The second joint member 4 has a second fixed end 4c fixed to the second side end 2a, a second connecting end 4e located on the opposite side of the second fixed end 4c in the first direction and protruding outward in the second direction, and a second circumferential groove 4f provided on an outer surface between the second fixed end 4c and the second connecting end 4e and extending along a circumferential direction,
The second connecting member 5 has a first convex portion 5c that is inserted into and engaged with the first circumferential groove 3f in a facing state in which the first connecting end portion 3e and the second connecting end portion 4e are faced to each other, a second convex portion 5e that is inserted into and engaged with the second circumferential groove 4f, and an engaging connection portion 5d that connects the first convex portion 5c and the second convex portion 5e in the first direction,
The first steel pipe member 1 and the second steel pipe member 2 are connected by attaching the plurality of second connecting members 5 to the first connecting member 7.

上記態様によれば、複数の第２連結部材５を第１連結部材７に装着することによって第１鋼管部材１および第２鋼管部材２を連結できるので、屋外作業による溶接が不要になり、安定した高品質な連結が得られ、二酸化炭素の排出量を削減できる。 According to the above embodiment, the first steel pipe member 1 and the second steel pipe member 2 can be connected by attaching multiple second connecting members 5 to the first connecting member 7, which eliminates the need for outdoor welding work, provides a stable, high-quality connection, and reduces carbon dioxide emissions.

また、第２態様に係る連結構造１０は、上記第１態様において、
前記対面状態にある前記第１連結端部３ｅおよび前記第２連結端部４ｅによって、外側に向けて突出する連結凸部７ｅが形成され、
前記第２連結部材５は、前記連結凸部７ｅに係合する凹部５ｆを有する。 In addition, the connection structure 10 according to the second aspect is the same as the first aspect,
The first connecting end 3e and the second connecting end 4e facing each other form a connecting protrusion 7e that protrudes outward,
The second connecting member 5 has a recess 5f that engages with the connecting protrusion 7e.

上記態様によれば、着脱可能な係合状態を容易に実現できる。 The above aspect makes it easy to achieve a detachable engagement state.

また、第３態様に係る連結構造１０は、上記第１態様において、
前記第１鋼管部材１または前記第２鋼管部材２のうち、下方に位置するいずれ一方は、上方に位置するいずれか他方をガイドするためのガイド部６を有する。 In addition, the connection structure 10 according to the third aspect is the same as the first aspect,
Either the first steel pipe member 1 or the second steel pipe member 2, which is located below, has a guide portion 6 for guiding the other one which is located above.

上記態様によれば、下方に位置する第２鋼管部材２に対する、上方に位置する第１鋼管部材１の位置決めが容易になる。 According to the above aspect, it becomes easier to position the first steel pipe member 1 located above relative to the second steel pipe member 2 located below.

また、第４態様に係る連結構造１０は、上記第２態様において、
前記第１継手部材３および前記第２継手部材４は、前記第２連結部材５が抜け出ることを防止する抜け止め部３ｈ，４ｈを有する。 In addition, the connection structure 10 according to the fourth aspect is the same as the second aspect,
The first joint member 3 and the second joint member 4 have retaining portions 3h, 4h that prevent the second connecting member 5 from coming off.

上記態様によれば、係合状態にある第２連結部材５が第１連結部材７に対して外側に抜け出ることを防止できる。 According to the above embodiment, the second connecting member 5 in the engaged state can be prevented from slipping outward relative to the first connecting member 7.

また、第５態様に係る連結構造１０は、上記第２態様において、
前記第２連結部材５は、直線状に延在する連結辺部５ａと、前記連結辺部５ａに連なるとともに湾曲形状を有する連結コーナー部５ｂとを有し、
前記第１連結部材７の内側コーナー部は、前記連結コーナー部５ｂを収容可能に切り欠かれた切欠部７ｍを有する。 In addition, the connection structure 10 according to the fifth aspect is the same as the second aspect described above,
The second connecting member 5 has a connecting side portion 5a extending linearly and a connecting corner portion 5b connected to the connecting side portion 5a and having a curved shape,
The inner corner portion of the first connecting member 7 has a notch 7m that is cut out so as to be capable of accommodating the connecting corner portion 5b.

上記態様によれば、第２連結部材５の連結コーナー部５ｂは、切欠部７ｍと干渉することなく、第１連結部材７の内側コーナー部に装着される。 According to the above embodiment, the connecting corner portion 5b of the second connecting member 5 is attached to the inner corner portion of the first connecting member 7 without interfering with the notch portion 7m.

また、第６態様に係る連結構造１０は、上記第５態様において、
前記第２連結部材５の前記連結コーナー部５ｂと、隣接する前記第２連結部材５の前記連結辺部５ａとは、ジョイント部材９を介して連結される。 In addition, the connection structure 10 according to the sixth aspect is the same as the connection structure 10 according to the fifth aspect,
The connecting corner portion 5 b of the second connecting member 5 and the connecting side portion 5 a of the adjacent second connecting member 5 are connected via a joint member 9 .

上記態様によれば、或る第２連結部材５と隣接する第２連結部材５とを確実に接続して、係合状態にある第２連結部材５が第１連結部材７に対して外側に抜け出ることを防止できる。 According to the above embodiment, a certain second connecting member 5 can be securely connected to an adjacent second connecting member 5, and the second connecting member 5 in the engaged state can be prevented from slipping outward relative to the first connecting member 7.

また、第７態様に係る連結構造１０は、上記第１態様において、
前記第１鋼管部材１および前記第２鋼管部材２は、中空の角形鋼管または中空の円形鋼管である。 In addition, the connecting structure 10 according to the seventh aspect is the same as the first aspect,
The first steel pipe member 1 and the second steel pipe member 2 are hollow square steel pipes or hollow circular steel pipes.

上記態様によれば、第１鋼管部材１および第２鋼管部材２が汎用的な鋼管であるので、連結構造１０を様々な建造物に適用できる。 According to the above embodiment, since the first steel pipe member 1 and the second steel pipe member 2 are general-purpose steel pipes, the connection structure 10 can be applied to various structures.

また、第８態様に係る建造物は、第１態様から第７態様の連結構造１０を用いて構築される。 The structure according to the eighth aspect is constructed using the connecting structure 10 according to the first to seventh aspects.

また、第９態様に係る、上述した連結構造１０を用いる鋼管部材１，２の連結方法は、
前記第１連結部材７および前記第２連結部材５を連結して一体化するステップと、
一体化した前記第１連結部材７および前記第２連結部材５を、互いに対向する前記第１鋼管部材１および前記第２鋼管部材２の間にセットするステップと、
エレクションピース１１，１２を用いて前記第１鋼管部材１および前記第２鋼管部材２を仮固定するステップと、
前記第１継手部材３を前記第１鋼管部材１に固定するとともに前記第２継手部材４を前記第２鋼管部材２に固定するステップと、
前記第１連結部材７から前記第２連結部材５を取り外すステップと、
前記第１鋼管部材１および前記第２鋼管部材２を現場で組み立てるステップと、
前記エレクションピース１１，１２を用いて前記第１鋼管部材１および前記第２鋼管部材２を仮固定するステップと、
前記第２連結部材５を前記第１連結部材７に装着するステップと、
前記エレクションピース１１，１２を除去するステップと、を備える。 In addition, a method for connecting steel pipe members 1, 2 using the above-mentioned connection structure 10 according to a ninth aspect is as follows:
a step of connecting the first connecting member 7 and the second connecting member 5 to form an integral body;
A step of setting the integrated first connecting member 7 and the second connecting member 5 between the first steel pipe member 1 and the second steel pipe member 2 facing each other;
A step of temporarily fixing the first steel pipe member 1 and the second steel pipe member 2 using erection pieces 11 and 12;
Fixing the first joint member 3 to the first steel pipe member 1 and fixing the second joint member 4 to the second steel pipe member 2;
detaching the second connecting member 5 from the first connecting member 7;
Assembling the first steel pipe member 1 and the second steel pipe member 2 on-site;
A step of temporarily fixing the first steel pipe member 1 and the second steel pipe member 2 using the erection pieces 11 and 12;
attaching the second connecting member 5 to the first connecting member 7;
and removing the erection pieces 11 and 12.

上記態様によれば、複数の第２連結部材５を第１連結部材７に装着することによって第１鋼管部材１および第２鋼管部材２を連結できるので、屋外作業による溶接が不要になり、安定した高品質な連結が得られ、二酸化炭素の排出量を削減できる。また、非常に正確に第１方向（長手方向、上下方向）に延在して垂直度の高い柱を立設できる。 According to the above embodiment, the first steel pipe member 1 and the second steel pipe member 2 can be connected by attaching a plurality of second connecting members 5 to the first connecting member 7, which eliminates the need for outdoor welding work, provides a stable, high-quality connection, and reduces carbon dioxide emissions. In addition, a column can be erected that extends very precisely in the first direction (longitudinal direction, vertical direction) and has a high degree of verticality.

１…第１鋼管部材（鋼管部材）
１ａ…第１側端部
２…第２鋼管部材（鋼管部材）
２ａ…第２側端部
３…第１継手部材
３ｃ…第１固定端部
３ｄ…第１中央部
３ｅ…第１連結端部
３ｆ…第１周回溝
３ｈ…第１張り出し部（抜け止め部）
３ｍ…第１切欠部
４…第２継手部材
４ｃ…第２固定端部
４ｄ…第２中央部
４ｅ…第２連結端部
４ｆ…第２周回溝
４ｈ…第２張り出し部（抜け止め部）
４ｍ…第２切欠部
５…第２連結部材
５ａ…連結辺部
５ｂ…連結コーナー部
５ｃ…第１凸部
５ｄ…係合接続部
５ｅ…第２凸部
５ｆ…凹部
５ｈ…面取り部
５ｍ…端面
６…ガイド部
６ａ…傾斜部
７…第１連結部材
７ｍ…切欠部
７ｅ…連結凸部
８…溶接部
９…ジョイント部材
９ａ…座ぐり穴
１０…連結構造
１１…第１エレクションピース（エレクションピース）
１２…第２エレクションピース（エレクションピース）
１３…スプライスプレート
１５…仮ボルト
１６…仮ナット
１７…連結ボルト
１８…連結ナット
１９…ジョイントボルト
２９…ジョイント凹部
Ｆ…挿入方向 1...First steel pipe member (steel pipe member)
1a...first side end portion 2...second steel pipe member (steel pipe member)
2a... Second side end portion 3... First joint member 3c... First fixed end portion 3d... First central portion 3e... First connecting end portion 3f... First circumferential groove 3h... First protruding portion (retaining portion)
3m: first notch portion 4: second joint member 4c: second fixed end portion 4d: second central portion 4e: second connecting end portion 4f: second circumferential groove 4h: second protruding portion (retaining portion)
4m...second notch portion 5...second connecting member 5a...connecting side portion 5b...connecting corner portion 5c...first convex portion 5d...engagement connection portion 5e...second convex portion 5f...concave portion 5h...chamfered portion 5m...end surface 6...guide portion 6a...inclined portion 7...first connecting member 7m...notch portion 7e...connecting convex portion 8...welded portion 9...joint member 9a...countersink hole 10...connecting structure 11...first erection piece (erection piece)
12...Second erection piece (erection piece)
13: splice plate 15: temporary bolt 16: temporary nut 17: connecting bolt 18: connecting nut 19: joint bolt 29: joint recess F: insertion direction

Claims

第１方向に延在する第１鋼管部材の第１側端部に固定される第１継手部材と、前記第１鋼管部材に対向配置されて前記第１方向に延在する第２鋼管部材の第２側端部に固定される第２継手部材とを有する第１連結部材と、
前記第１連結部材に対して着脱可能に構成される複数の第２連結部材と、を備え、
前記第１継手部材は、前記第１側端部に固定される第１固定端部と、前記第１固定端部に対して前記第１方向における反対側に位置して前記第１方向に直交する第２方向の外向きに突出する第１連結端部と、前記第１固定端部と前記第１連結端部との間の外側面に設けられて周方向に沿って延在する第１周回溝とを有し、
前記第２継手部材は、前記第２側端部に固定される第２固定端部と、前記第２固定端部に対して前記第１方向における反対側に位置して前記第２方向の外向きに突出する第２連結端部と、前記第２固定端部と前記第２連結端部との間の外側面に設けられて周方向に沿って延在する第２周回溝とを有し、
前記第２連結部材は、前記第１連結端部および前記第２連結端部を対面させた対面状態において、前記第１周回溝に挿入されて係合する第１凸部と、前記第２周回溝に挿入されて係合する第２凸部と、前記第１凸部および前記第２凸部を前記第１方向につなぐ係合接続部とを有し、
前記第１連結端部と前記第２連結端部と前記第１周回溝と前記第２周回溝とは、前記第１連結部材の外側面において全周にわたって延在しており、
前記第２連結部材は、直線状に延在する連結辺部と、前記連結辺部に連なるとともに湾曲形状を有する連結コーナー部とを有し、
前記第１連結部材の内側コーナー部は、前記連結コーナー部を収容可能に切り欠かれた切欠部を有し、
前記複数の前記第２連結部材を前記第１連結部材に装着することによって、前記第１鋼管部材および前記第２鋼管部材を連結させることを特徴とする、鋼管部材の連結構造。 A first connecting member having a first joint member fixed to a first side end of a first steel pipe member extending in a first direction and a second joint member arranged opposite the first steel pipe member and fixed to a second side end of a second steel pipe member extending in the first direction;
A plurality of second connecting members configured to be detachable from the first connecting member,
the first joint member has a first fixed end portion fixed to the first side end portion, a first connecting end portion located on the opposite side of the first fixed end portion in the first direction and protruding outward in a second direction perpendicular to the first direction, and a first circumferential groove provided on an outer surface between the first fixed end portion and the first connecting end portion and extending along a circumferential direction,
the second joint member has a second fixed end portion fixed to the second side end portion, a second connecting end portion located on the opposite side of the second fixed end portion in the first direction and protruding outward in the second direction, and a second circumferential groove provided on an outer surface between the second fixed end portion and the second connecting end portion and extending along a circumferential direction,
the second connecting member has a first convex portion that is inserted into and engaged with the first circumferential groove in a facing state in which the first connecting end portion and the second connecting end portion are faced to each other, a second convex portion that is inserted into and engaged with the second circumferential groove, and an engaging connection portion that connects the first convex portion and the second convex portion in the first direction,
the first connecting end portion, the second connecting end portion, the first circumferential groove, and the second circumferential groove extend around an entire periphery of an outer surface of the first connecting member,
The second connecting member has a connecting side portion extending linearly and a connecting corner portion connected to the connecting side portion and having a curved shape,
The inner corner portion of the first connecting member has a notch that is cut out to accommodate the connecting corner portion,
A connection structure for steel pipe members, characterized in that the first steel pipe member and the second steel pipe member are connected by attaching the plurality of second connecting members to the first connecting member.

前記対面状態にある前記第１連結端部および前記第２連結端部によって、外側に向けて突出する連結凸部が形成され、
前記第２連結部材は、前記連結凸部に係合する凹部を有することを特徴とする、請求項１に記載の鋼管部材の連結構造。 a connecting protrusion protruding outward is formed by the first connecting end portion and the second connecting end portion in the facing state,
The steel pipe member connection structure according to claim 1 , wherein the second connection member has a recess that engages with the connection protrusion.

前記第１継手部材または前記第２継手部材のうち、下方に位置するいずれか一方はガイド部を有し、上方に位置するいずれか他方は前記ガイド部によってガイドされることを特徴とする、請求項１に記載の鋼管部材の連結構造。 2. The steel pipe member connection structure according to claim 1, wherein one of the first joint member and the second joint member located below has a guide portion, and the other of the first joint member located above is guided by the guide portion .

前記第１継手部材および前記第２継手部材は、前記第２連結部材が抜け出ることを防止する抜け止め部を有することを特徴とする、請求項１に記載の鋼管部材の連結構造。 The steel pipe member connection structure according to claim 1, characterized in that the first joint member and the second joint member have a retaining portion that prevents the second connecting member from coming out.

前記第２連結部材の前記連結コーナー部と、隣接する前記第２連結部材の前記連結辺部とは、ジョイント部材を介して連結されることを特徴とする、請求項１に記載の鋼管部材の連結構造。 The connection structure of steel pipe members according to claim 1 , characterized in that the connection corner portion of the second connection member and the connection side portion of the adjacent second connection member are connected via a joint member.

前記第１鋼管部材および前記第２鋼管部材は、中空の角形鋼管であることを特徴とする、請求項１に記載の鋼管部材の連結構造。 The steel pipe member connection structure according to claim 1 , wherein the first steel pipe member and the second steel pipe member are hollow square steel pipes .

請求項１から請求項６のいずれか１項に記載の連結構造を用いて構築されることを特徴とする、建造物。 A building constructed using the connection structure according to any one of claims 1 to 6.

請求項１から請求項６のいずれか１項に記載の連結構造を用いる鋼管部材の連結方法であって、
前記第１連結部材および前記第２連結部材を連結して一体化するステップと、
一体化した前記第１連結部材および前記第２連結部材を、互いに対向する前記第１鋼管部材および前記第２鋼管部材の間にセットするステップと、
エレクションピースを用いて前記第１鋼管部材および前記第２鋼管部材を仮固定するステップと、
前記第１継手部材を前記第１鋼管部材に固定するとともに前記第２継手部材を前記第２鋼管部材に固定するステップと、
前記第１連結部材から前記第２連結部材を取り外すステップと、
前記第１鋼管部材および前記第２鋼管部材を現場で組み立てるステップと、
前記エレクションピースを用いて前記第１鋼管部材および前記第２鋼管部材を仮固定するステップと、
前記第２連結部材を前記第１連結部材に装着するステップと、
前記エレクションピースを除去するステップと、を備えることを特徴とする、鋼管部材の連結方法。 A method for connecting steel pipe members using the connection structure according to any one of claims 1 to 6,
connecting the first connecting member and the second connecting member together;
A step of setting the integrated first connecting member and the second connecting member between the first steel pipe member and the second steel pipe member facing each other;
A step of temporarily fixing the first steel pipe member and the second steel pipe member using an erection piece;
Fixing the first joint member to the first steel pipe member and fixing the second joint member to the second steel pipe member;
detaching the second connecting member from the first connecting member;
Assembling the first steel pipe member and the second steel pipe member on site;
A step of temporarily fixing the first steel pipe member and the second steel pipe member using the erection piece;
attaching the second connecting member to the first connecting member;
A method for connecting steel pipe members, comprising: a step of removing the erection piece.