JP2009235850A - Joint structure of precast concrete member - Google Patents

Joint structure of precast concrete member Download PDF

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JP2009235850A
JP2009235850A JP2008085771A JP2008085771A JP2009235850A JP 2009235850 A JP2009235850 A JP 2009235850A JP 2008085771 A JP2008085771 A JP 2008085771A JP 2008085771 A JP2008085771 A JP 2008085771A JP 2009235850 A JP2009235850 A JP 2009235850A
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precast concrete
groove
fixing
vertical direction
precast
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JP4934088B2 (en
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Hitoshi Asano
均 浅野
Osamu Kobayashi
修 小林
Iku Sato
郁 佐藤
Sadahisa Nomoto
禎久 野本
Kosaku Murano
耕作 村野
Noriyuki Yamanaka
典幸 山中
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Toda Corp
Nippon Hume Corp
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Nippon Hume Corp
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Abstract

<P>PROBLEM TO BE SOLVED: To reduce construction cost by making a welding operation on site unnecessary and reducing the amount of used grout material; to improve external appearance by making the width of a joint portion small. <P>SOLUTION: Embedded members 5 for anchorage respectively jointed to reinforcing bars 4 disposed in plural stages in the vertical direction are embedded in a joint end face of one divided precast cylinder body 2. The embedded member 5 for anchorage is formed with pocket-shaped notched grooves 6 whose opening faces the outside, and formed with vertical grooves 7 having a same shape as the notched groove 6 and vertically continued by forming the notched grooves in concrete along the vertical direction. Reinforcing bars 8 disposed in plural stages in the vertical direction are installed in a joint end face of the other divided precast cylinder body 3 so as to project up to the outside, and anchorage members 9 fitted to the pocket-shaped notched grooves 6 are fixed to the tip end of the reinforcing bars 8 respectively. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

本発明は、プレキャストコンクリート部材同士を接合するための接合構造に関する。   The present invention relates to a joint structure for joining precast concrete members together.

従来より、風力発電設備などの塔状構造物や、半地下道路トンネル、地下駐車場、駐輪場、共同溝、地下鉄、地下道などの地下構造物では、施工の効率性や施工期間の短縮などの点からコンクリート製のプレキャストコンクリート部材を相互に接合して構造物が構築されることがある。   Conventionally, in the case of tower structures such as wind power generation facilities, and underground structures such as semi-underground road tunnels, underground parking lots, bicycle parking lots, common grooves, subways, and underground passages, the efficiency of construction and the shortening of the construction period, etc. In some cases, a precast concrete member made of concrete is joined to each other to construct a structure.

例えば、風力発電設備などの塔状構造物の構築においては、コンクリート製のプレキャスト筒状体を高さ方向に複数積み上げて、各プレキャスト筒状体をＰＣ鋼材により緊結することによってタワー部が構築されることがある。   For example, in the construction of a tower structure such as a wind power generation facility, a tower portion is constructed by stacking a plurality of concrete precast cylinders in the height direction and binding each precast cylinder with a PC steel material. Sometimes.

この場合、前記プレキャスト筒状体として外径が４ｍ以上の大口径のものが使用される場合には、陸上輸送（トラック等による運搬）における荷幅制限の規制などの都合上、前記プレキャスト筒状体を円周方向に２以上に分割した分割プレキャスト筒状体として現地に搬入し、現場にてこれら分割プレキャスト筒状体を接合して前記プレキャスト筒状体とする作業が行われていた。   In this case, when a large diameter of 4 m or more is used as the precast tubular body, the precast tubular body is used for reasons such as restriction of load width limitation in land transportation (transportation by truck etc.). The work was carried in the field as a divided precast tubular body divided into two or more in the circumferential direction, and the precast tubular body was joined by joining these divided precast tubular bodies on site.

従来、このような分割プレキャスト筒状体５０、５０を現場で接合してプレキャスト筒状体５１を構築するには、図１２、図１３に示されるように、以下の手順で行われていた。先ず、分割プレキャスト筒状体５０として、接合端部の所定幅に亘って外周面側及び内周面側のそれぞれに切込み部５２を形成し、この切込み部５２において、一部がコンクリート内に埋め込まれ、一部が露出した鋼製の埋込プレート５３、５３…を、高さ方向に複数枚設けておく（図１２(A)）。   Conventionally, in order to construct such a precast tubular body 51 by joining such divided precast tubular bodies 50 and 50 in the field, as shown in FIGS. 12 and 13, the following procedure has been performed. First, as the divided precast tubular body 50, a cut portion 52 is formed on each of the outer peripheral surface side and the inner peripheral surface side over a predetermined width of the joining end portion, and a part of the cut portion 52 is embedded in the concrete. Then, a plurality of steel embedded plates 53, 53... Partially exposed are provided in the height direction (FIG. 12A).

次に、この分割プレキャスト筒状体５０、５０を現場に搬入し、現場にて、図１２(B)に示されるように、分割プレキャスト筒状体５０、５０の接合端面同士を突合わせて配置するとともに、両分割プレキャスト筒状体５０、５０の各段の埋込プレート５３、５３間に跨って接合プレート５４を配設し、前記埋込プレート５３、５３と接合プレート５４とを溶接することによって分割プレキャスト筒状体５０、５０を連結する。   Next, the divided precast tubular bodies 50 and 50 are carried into the site, and the joined end faces of the divided precast tubular bodies 50 and 50 are arranged to face each other as shown in FIG. At the same time, a joining plate 54 is disposed across the embedding plates 53 and 53 of each stage of the two divided precast tubular bodies 50 and 50, and the embedding plates 53 and 53 and the joining plate 54 are welded. The divided precast tubular bodies 50, 50 are connected by

その後、図１２(C)及び図１３に示されるように、両分割プレキャスト筒状体５０、５０の接合端部に連続的に形成された切込み部５２、５２の周囲を型枠で囲い、グラウト材５５を充填してプレキャスト筒状体５１の構築作業が完了する。   Thereafter, as shown in FIG. 12C and FIG. 13, the periphery of the cut portions 52, 52 formed continuously at the joining end portions of the two split precast tubular bodies 50, 50 is surrounded by a mold frame. The construction work of the precast cylindrical body 51 is completed by filling the material 55.

このような接合方法は、例えば下記特許文献１にも、連結しようとする両方のコンクリート部材を対峙させて各々の鉄筋を溶接又は機械的方法によって接合した後、この接合部にコンクリートを打設して連結するプレキャストコンクリート部材の連結工法が開示されるように、プレキャストコンクリート部材を接合する方法として一般的に採用されていた。
特開平５−３４０００３号公報 Such a joining method is disclosed in Patent Document 1 below, for example, in which both concrete members to be connected are confronted and each reinforcing bar is joined by welding or a mechanical method, and then concrete is placed in the joint. As a method for joining precast concrete members, it has been generally adopted so that a method for connecting precast concrete members to be joined together is disclosed.
JP-A-5-340003

しかしながら、このような従来の接合方法では、埋込プレート５３、５３間に接合プレート５４を固定する際に現場での溶接作業を伴うため、溶接熱によるコンクリートのひび割れを防止するなどの理由から慎重な溶接作業を行う必要があり、作業時間の長期化や、施工コスト増大の原因となっていた。   However, in such a conventional joining method, when the joining plate 54 is fixed between the embedded plates 53, 53, an on-site welding operation is involved. Therefore, it is cautious for reasons such as preventing cracking of concrete due to welding heat. It was necessary to perform a large welding work, which caused a long working time and increased construction costs.

さらに、従来の接合方法では、埋込プレート５３、５３間に跨って接合プレート５４を溶接したときの接合強度を確保するため、接合プレート５４を設置する切込み部５２の形成幅として、ある程度の長さを必要とする。その結果、切込み部５２、５２を充填するのに多量のグラウト材５５が必要になるとともに、その充填のための作業時間も長期化し、施工コストが嵩む。また接合部に充填されるグラウト材５５は、周囲のコンクリートとの色合いが異なるため、グラウト材５５部分が周囲の色合いと異なることが外部からはっきりと視認でき、塔状構造物の外観が悪くなるなどの問題があった。   Furthermore, in the conventional joining method, in order to secure the joining strength when the joining plate 54 is welded across the embedded plates 53, 53, the formation width of the cut portion 52 where the joining plate 54 is installed is a certain length. Need As a result, a large amount of the grout material 55 is required to fill the notches 52, 52, and the working time for filling is prolonged, and the construction cost increases. Further, since the grout material 55 filled in the joint has a different hue from the surrounding concrete, it can be clearly seen from the outside that the grout material 55 is different from the surrounding color, and the appearance of the tower-like structure is deteriorated. There were problems such as.

そこで本発明の主たる課題は、現場での溶接作業を不要とするとともに、使用するグラウト材の量を低減することにより、作業時間の短縮化及び施工コストの削減を図り、かつ接合部の幅を小さくすることにより外観を良好にしたプレキャストコンクリート部材の接合構造を提供することにある。   Therefore, the main problems of the present invention are to eliminate the need for on-site welding work, reduce the amount of grout material to be used, thereby shortening the work time and the construction cost, and reducing the width of the joint. An object of the present invention is to provide a joint structure for a precast concrete member having a good appearance by reducing the size.

前記課題を解決するために請求項１に係る本発明として、プレキャストコンクリート部材同士を接合するための接合構造であって、
一方のプレキャストコンクリート部材の接合端面には、上下方向に複数段で配置された各鉄筋に接合された定着用埋込部材が埋設され、前記定着用埋込部材には開口を外部に臨ませたポケット状の切欠き溝が形成されるとともに、前記切欠き溝の形状と同形状で上下方向に沿ってコンクリートに切欠き溝が形成されることによって上下方向に連続する縦溝が形成され、
他方のプレキャストコンクリート部材の接合端面には、上下方向に複数段で配置された各鉄筋が外部まで突出して設けられるとともに、この突出した鉄筋の先端部に前記ポケット状切欠き溝に嵌合される定着部材が固定され、
前記他方のプレキャストコンクリート部材の接合端面に突出して設けられた鉄筋の定着部材を、前記一方のプレキャストコンクリート部材の縦溝に沿って挿入してプレキャストコンクリート部材同士を連結するとともに、前記他方のプレキャストコンクリート部材の定着部材を、前記一方のプレキャストコンクリート部材の定着用埋込部材のポケット状切欠き溝部分に位置決めした状態で、隙間部分にグラウト材を充填したことを特徴とするプレキャストコンクリート部材の接合構造が提供される。 In order to solve the above-mentioned problems, the present invention according to claim 1 is a joining structure for joining precast concrete members,
On the joint end face of one precast concrete member, there is embedded a fixing embedded member bonded to each reinforcing bar arranged in a plurality of stages in the vertical direction, and the fixing embedded member has an opening facing outside. A pocket-shaped cutout groove is formed, and a vertical groove continuous in the vertical direction is formed by forming the cutout groove in the concrete along the vertical direction in the same shape as the shape of the cutout groove,
On the joint end surface of the other precast concrete member, the reinforcing bars arranged in a plurality of stages in the vertical direction are provided so as to protrude to the outside, and the front end of the protruding reinforcing bar is fitted into the pocket-shaped notch groove. The fixing member is fixed,
The fixing member of the reinforcing bar provided protruding from the joining end surface of the other precast concrete member is inserted along the longitudinal groove of the one precast concrete member to connect the precast concrete members to each other, and the other precast concrete A joint structure for a precast concrete member, characterized in that a grout material is filled in a gap portion in a state where the fixing member of the member is positioned in a pocket-shaped notch groove portion of the fixing embedded member of the one precast concrete member. Is provided.

上記請求項１記載の発明は、本発明に係るプレキャストコンクリート部材の接合構造の第１形態例であり、接合するプレキャストコンクリート部材の接合端面のうち、一方には、上下方向に複数段で配置された各鉄筋に接合された定着用埋込部材を埋設し、前記定着用埋込部材には開口を外部に臨ませたポケット状の切欠き溝を形成するとともに、前記切欠き溝の形状と同形状で上下方向に沿ってコンクリートに切欠き溝が形成されることによって上下方向に連続する縦溝を形成し、他方には、上下方向に複数段で配置された各鉄筋を外部まで突出して設けるとともに、この突出した鉄筋の先端部に前記ポケット状切欠き溝に嵌合される定着部材を固定した構造としたものである。   The invention described in claim 1 is a first embodiment of the precast concrete member joining structure according to the present invention, and one of the joining end faces of the precast concrete member to be joined is arranged in a plurality of stages in the vertical direction. The fixing embedding member joined to each reinforcing bar is embedded, and the fixing embedding member is formed with a pocket-shaped notch groove with an opening facing the outside, and has the same shape as the notch groove. By forming a notch groove in the concrete along the vertical direction in the shape, a vertical groove continuous in the vertical direction is formed, and on the other side, each reinforcing bar arranged in multiple stages in the vertical direction is provided to protrude to the outside At the same time, a fixing member fitted in the pocket-shaped notch groove is fixed to the tip of the protruding reinforcing bar.

かかる構造のプレキャストコンクリート部材同士を現場で接合するには、他方のプレキャストコンクリート部材の接合端面に突出して設けられた鉄筋の定着部材を、前記一方のプレキャストコンクリート部材の縦溝に沿って挿入してプレキャストコンクリート部材同士を連結するとともに、前記他方のプレキャストコンクリート部材の定着部材を、前記一方のプレキャストコンクリート部材の定着用埋込部材のポケット状切欠き溝部分に位置決めした状態で、隙間部分にグラウト材を充填することによって行われる。   In order to join the precast concrete members having such a structure on site, a fixing member of a reinforcing bar provided protruding from the joining end surface of the other precast concrete member is inserted along the longitudinal groove of the one precast concrete member. While connecting the precast concrete members to each other, the fixing member of the other precast concrete member is positioned in the pocket-shaped notch groove portion of the fixing embedded member of the one precast concrete member, and the grout material is disposed in the gap portion. Is done by filling.

このように、本発明に係るプレキャストコンクリート部材の接合構造においては、現場での溶接作業が一切不要であるため、従来の接合構造のように、現場溶接による作業時間の長期化及び施工コストの増大という問題が解決される。   As described above, the precast concrete member joining structure according to the present invention does not require any on-site welding work. Therefore, as in the conventional joining structure, the work time is increased by the on-site welding and the construction cost is increased. The problem is solved.

また、プレキャストコンクリート部材同士を連結するには、他方のプレキャストコンクリート部材の接合端面に突出して設けられた鉄筋の定着部材を、前記一方のプレキャストコンクリート部材の縦溝に沿って挿入するだけでよく、従来の接合構造のように接合端部に溶接のための切欠きなどを設ける必要がないため、グラウト材を充填すべき隙間部分が大幅に低減し、グラウト材の使用量減少による施工コスト削減ともなる。さらに、接合部の幅はプレキャストコンクリート部材同士の目地程度のものであるため、周囲のコンクリートと色合いが異なるグラウト材であっても目立たずに、良好な外観とすることができるようになる。   Further, in order to connect the precast concrete members to each other, it is only necessary to insert the reinforcing member of the reinforcing bar provided protruding from the joint end surface of the other precast concrete member along the longitudinal groove of the one precast concrete member, Since it is not necessary to provide notches for welding at the joint end as in the conventional joint structure, the gap part to be filled with the grout material is greatly reduced, and the construction cost can be reduced by reducing the amount of grout material used. Become. Furthermore, since the width of the joint is about the joint between the precast concrete members, even a grout material having a different hue from the surrounding concrete can be made inconspicuous and have a good appearance.

前記接合部における力の伝達機構は、引張方向の力が作用したとすると、他方のプレキャストコンクリート部材の定着部材からの力がグラウト材を介して、一方のプレキャストコンクリート部材の前記定着用埋込部材に伝達され、この定着用埋込部材に接合された鉄筋に円滑に伝達される。   Assuming that a force in the tensile direction is applied, the force transmission mechanism in the joint portion is such that the force from the fixing member of the other precast concrete member is passed through the grout material, and the fixing embedded member of the one precast concrete member is And smoothly transmitted to the reinforcing bars joined to the fixing embedded member.

請求項２に係る本発明として、前記一方のプレキャストコンクリート部材において、製作時に前記定着用埋込部材の設置間隔を保持するために、各定着用埋込部材が所定部位で接合された位置決め用固定部材が縦方向に沿って設けられている請求項１記載のプレキャストコンクリート部材の接合構造が提供される。   According to a second aspect of the present invention, in the one precast concrete member, in order to maintain an installation interval of the fixing embedded member at the time of manufacture, each fixing embedded member is joined at a predetermined position for fixing. The joining structure of the precast concrete member of Claim 1 with which the member is provided along the vertical direction is provided.

上記請求項２記載の発明では、前記一方のプレキャストコンクリート部材において、製作時に前記定着用埋込部材の設置間隔を保持するために、各定着用埋込部材が所定部位で接合された位置決め用固定部材を縦方向に沿って設けることにより、型枠内に配設した鉄筋及びこれに接合した定着用埋込部材がコンクリートの打設によって位置ズレすることなく埋設されるようになる。これにより、プレキャストコンクリート部材同士の連結時に、前記定着部材を前記定着用埋込部材のポケット状切欠き溝部分に確実に位置決めできるようになる。また、前記位置決め用固定部材は、定着用埋込部材側の圧縮面積の拡大により、充填されたグラウト材の圧縮破壊の防止機能を兼ね備えるものである。   According to the second aspect of the present invention, in the one precast concrete member, in order to maintain the installation interval of the fixing embedding member at the time of manufacture, each fixing embedding member is joined at a predetermined position. By providing the members along the vertical direction, the reinforcing bars disposed in the mold and the fixing embedded members joined thereto are embedded without being displaced by the placement of concrete. Accordingly, when the precast concrete members are connected to each other, the fixing member can be reliably positioned in the pocket-shaped notch groove portion of the fixing embedded member. The positioning fixing member also has a function of preventing the compressive fracture of the filled grout material by expanding the compression area on the fixing embedded member side.

請求項３に係る本発明として、プレキャストコンクリート部材同士を接合するための接合構造であって、
一方のプレキャストコンクリート部材の接合端面には、開口を外部に臨ませた溝型断面の形材が埋設されることにより、上下方向に連続する縦溝が形成されるとともに、上下方向に複数段で配置された各鉄筋が前記溝型断面の形材に連結され、
他方のプレキャストコンクリート部材の接合端面には、上下方向に複数段で配置された各鉄筋が外部まで突出して設けられるとともに、この突出した鉄筋の先端部に前記溝型断面の形材に嵌合される定着部材が固定され、
前記他方のプレキャストコンクリート部材の接合端面に突出して設けられた鉄筋の定着部材を、前記一方のプレキャストコンクリート部材の縦溝に沿って挿入してプレキャストコンクリート部材同士を連結した状態で、隙間部分にグラウト材を充填したことを特徴とするプレキャストコンクリート部材の接合構造が提供される。 As this invention which concerns on Claim 3, it is a joining structure for joining precast concrete members,
On the joint end face of one of the precast concrete members, a groove-shaped cross-section with the opening facing the outside is embedded to form a vertical groove that is continuous in the vertical direction, and in multiple stages in the vertical direction. Each rebar arranged is connected to the profile of the channel cross section,
On the joint end surface of the other precast concrete member, the reinforcing bars arranged in a plurality of stages in the vertical direction are provided so as to protrude to the outside, and fitted to the shape of the groove-type cross section at the tip of the protruding reinforcing bars. Fixing member is fixed,
A rebar fixing member provided protruding from the joint end face of the other precast concrete member is inserted along the longitudinal groove of the one precast concrete member and the precast concrete members are connected to each other. A joining structure of a precast concrete member characterized by being filled with a material is provided.

上記請求項３記載の発明は、本発明に係るプレキャストコンクリート部材の接合構造の第２形態例であり、上記第１形態例に係る定着用埋込部材に代えて、溝型断面の形材を埋設したものである。具体的には、一方のプレキャストコンクリート部材の接合端面には、開口を外部に臨ませた溝型断面の形材が埋設されることにより、上下方向に連続する縦溝を形成するとともに、上下方向に複数段で配置された各鉄筋が前記溝型断面の形材に連結する構造とした。   The invention described in claim 3 is a second embodiment of the precast concrete member joining structure according to the present invention. Instead of the fixing embedded member according to the first embodiment, a groove-shaped cross section is used. It is buried. Specifically, on the joint end face of one of the precast concrete members, a groove having a groove-shaped cross-section with an opening facing the outside is embedded to form a vertical groove that is continuous in the vertical direction, and the vertical direction Each of the reinforcing bars arranged in a plurality of stages is connected to the profile of the groove type cross section.

このように、本発明に係るプレキャストコンクリート部材の接合構造においても、上記請求項１記載の発明と同様に、現場での溶接作業が一切不要であることによる作業時間の短縮化及び施工コストの低減化が図られるとともに、使用するグラウト材の量を低減できることによる施工コストの低減化が図られ、かつ接合部の幅を目地程度のものとすることにより良好な外観とすることができるようになる。   Thus, also in the joint structure of the precast concrete member which concerns on this invention, like the invention of the said Claim 1, the shortening of working time and the reduction of construction cost by no welding work on the spot are required at all. The construction cost can be reduced by reducing the amount of grout material to be used, and the appearance of the joint can be improved by making the width of the joint portion about a joint. .

請求項４に係る本発明として、前記定着部材を前記縦溝に挿入した状態で、前記定着部材とポケット状切欠き溝又は溝型断面形材の溝部形成部材との隙間を埋めるため、前記定着部材の基端側にスペーサーが配設されている請求項１〜３いずれかに記載のプレキャストコンクリート部材の接合構造が提供される。   According to a fourth aspect of the present invention, in order to fill a gap between the fixing member and a pocket-shaped notch groove or a groove portion forming member of a groove-shaped cross-section with the fixing member inserted into the longitudinal groove, The joining structure of the precast concrete member in any one of Claims 1-3 by which the spacer is arrange | positioned by the base end side of the member is provided.

上記請求項４記載の発明は、前記定着部材を前記縦溝に挿入した状態で、前記定着部材とポケット状切欠き溝又は溝型断面形材の溝部形成部材との間に隙間（グラウト充填部）が存在すると、コンクリート部材間に引張力が加わった場合、グラウト材の破壊によって両者の位置ズレが生じ易くなることに鑑みてなされたものであり、前記隙間を埋めるため、前記定着部材の基端側にスペーサーを配設するようにしたものである。   According to the fourth aspect of the present invention, there is provided a gap (grouting portion) between the fixing member and the pocket-shaped notched groove or the groove forming member of the groove-shaped cross-section in a state where the fixing member is inserted into the longitudinal groove. ) Is present in view of the fact that when a tensile force is applied between the concrete members, the positional deviation between the two tends to occur due to the destruction of the grout material. A spacer is disposed on the end side.

請求項５に係る本発明として、前記プレキャストコンクリート部材は、２分割された半円リング状プレキャスト部材とされる請求項１〜４いずれかに記載のプレキャストコンクリート部材の接合構造が提供される。   According to a fifth aspect of the present invention, there is provided the precast concrete member joining structure according to any one of the first to fourth aspects, wherein the precast concrete member is a semicircular ring-shaped precast member divided into two.

以上詳説のとおり本発明によれば、現場での溶接作業を不要とするとともに、使用するグラウト材の量を低減することにより、作業時間の短縮及び施工コストの削減ができ、かつ接合部の幅を小さくすることにより良好な外観とすることができる。   As described above in detail, according to the present invention, on-site welding work is not necessary, and the amount of grout material used is reduced, so that work time and construction cost can be reduced, and the width of the joint portion can be reduced. It is possible to obtain a good appearance by reducing the size.

以下、本発明の実施の形態について図面を参照しながら詳述する。   Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings.

本書では、図１に示されるように、例えば風力発電設備などの塔状構造物に使用される円形のプレキャスト筒状体１を例に挙げ、このプレキャスト筒状体１を円周方向に２分割した半円リング状プレキャスト部材（以下、分割プレキャスト筒状体２、３ともいう）の接合構造について詳述する。なお、本発明は、このような筒状体以外の一般的なプレキャストコンクリート部材の接合構造にも同様に適用できる。   In this document, as shown in FIG. 1, for example, a circular precast cylindrical body 1 used for a tower-like structure such as a wind power generation facility is taken as an example, and the precast cylindrical body 1 is divided into two in the circumferential direction. The joined structure of the semicircular ring-shaped precast member (hereinafter also referred to as divided precast cylindrical bodies 2 and 3) will be described in detail. In addition, this invention is applicable similarly to the joining structure of general precast concrete members other than such a cylindrical body.

〔第１形態例〕
図１はプレキャスト筒状体１の斜視図、図２は分割プレキャスト筒状体２、３の接合要領を示す斜視図、図３は接合状態の接合端部近傍の断面図である。 [First embodiment]
FIG. 1 is a perspective view of the precast tubular body 1, FIG. 2 is a perspective view showing the joining procedure of the divided precast tubular bodies 2 and 3, and FIG. 3 is a sectional view of the vicinity of the joined end portion in the joined state.

図２及び図３に示されるように、一方の分割プレキャスト筒状体２の接合端面には、上下方向に複数段で配置された各鉄筋４、４…に溶接などによって接合された定着用埋込部材５、５…が埋設され、この定着用埋込部材５には左右それぞれに開口を外部に臨ませたポケット状の切欠き溝６、６が形成されるとともに、この切欠き溝６の形状と同形状で上下方向に沿ってコンクリートに切欠き溝を形成することによって上下方向に連続する縦溝７、７が左右それぞれに形成されている。   As shown in FIG. 2 and FIG. 3, the fixing end embedded in one of the divided precast cylindrical bodies 2 is welded to the reinforcing bars 4, 4. The fixing members 5 are embedded with pocket-shaped notch grooves 6 and 6 with openings facing the outside on the left and right, respectively. By forming a notch groove in the concrete along the vertical direction in the same shape as the shape, vertical grooves 7 and 7 that are continuous in the vertical direction are formed on the left and right sides, respectively.

また、他方の分割プレキャスト筒状体３の接合端面には、上下方向に複数段で配置された各鉄筋８、８…が左右それぞれに外部まで突出して設けられるとともに、この突出した鉄筋８の先端に前記ポケット状切欠き溝６に嵌合される定着部材９が固定されている。   Further, on the joint end surface of the other divided precast tubular body 3, the reinforcing bars 8, 8... Arranged in a plurality of stages in the vertical direction are provided so as to protrude to the outside on the left and right sides, and the tip of the protruding reinforcing bar 8 is provided. A fixing member 9 to be fitted into the pocket-shaped notch groove 6 is fixed.

前記定着用埋込部材５は、図４に示されるように、略方形状の鋼板からなり、後方側の左右それぞれに鉄筋４、４が溶接などによって接合されている。また、前記鉄筋４、４の接合部分に対応した前方側には、左右それぞれに、開口から内側で拡大したポケット状の切欠き溝６、６が形成されている。このポケット状切欠き溝６は、前記開口から同幅で形成された溝部６ａと、その内側に連続して幅広に拡大したポケット部６ｂとから構成されている。前記溝部６ａは、他方のプレキャスト筒状体３の接合端面から突出した鉄筋８，８…が挿通可能な幅で形成され、前記ポケット部６ｂは、前記定着部材９が挿通可能な幅で形成されている。   As shown in FIG. 4, the fixing embedded member 5 is made of a substantially rectangular steel plate, and reinforcing bars 4 and 4 are joined to the left and right sides of the rear side by welding or the like. Further, pocket-shaped notch grooves 6 and 6 that are enlarged from the opening to the inside are formed on the front side corresponding to the joint portions of the reinforcing bars 4 and 4 respectively. The pocket-shaped notch groove 6 is composed of a groove portion 6a formed with the same width from the opening and a pocket portion 6b which is continuously widened on the inside thereof. The groove 6a is formed with a width that allows the reinforcing bars 8, 8... Protruding from the joining end face of the other precast cylindrical body 3 to be inserted, and the pocket 6b is formed with a width that allows the fixing member 9 to be inserted. ing.

前記縦溝７は、前記定着用埋込部材５に形成されたポケット状切欠き溝６、６の形状と同形状で上下方向に沿ってコンクリートに切欠き溝が形成されることにより、分割プレキャスト筒状体２の上面から下面に亘って連続して、接合端面の左右にそれぞれ形成されている。   The vertical groove 7 has the same shape as the pocket-shaped notched grooves 6 and 6 formed in the fixing embedding member 5, and the notched grooves are formed in the concrete along the vertical direction. The cylindrical body 2 is formed on the left and right sides of the joining end surface continuously from the upper surface to the lower surface.

前記定着部材９は、図４に示されるように、プレートナットなど端部にナット部９ｂより大径のツバ９ａが設けられた形状のナットが好適に用いられる。この場合、前記鉄筋８の先端部にはネジ加工が施され、前記定着部材９を鉄筋８に螺合固定する。また、前記定着部材９は、鉄筋８の先端部に溶接などによって固定するようにしてもよいし、前記プレートナットに代えて、通常のナット部材を用いるようにしてもよい。   As shown in FIG. 4, the fixing member 9 is preferably a nut having a shape in which a flange 9 a having a diameter larger than that of the nut portion 9 b is provided at an end such as a plate nut. In this case, the tip of the reinforcing bar 8 is threaded, and the fixing member 9 is screwed and fixed to the reinforcing bar 8. Further, the fixing member 9 may be fixed to the distal end portion of the reinforcing bar 8 by welding or the like, or a normal nut member may be used instead of the plate nut.

そして、前記分割プレキャスト筒状体２、３を接合するには、他方の分割プレキャスト筒状体３の接合端面に突出して設けられた鉄筋８、８…の定着部材９、９…を、一方の分割プレキャスト筒状体２の縦溝７、７に沿って挿入して分割プレキャスト筒状体２、３を連結するとともに、分割プレキャスト筒状体３の各定着部材９、９…を、一方の分割プレキャスト筒状体２の各定着用埋込部材５、５…のポケット状切欠き溝６部分に位置決めした状態で、隙間部分にグラウト材Ｇを充填する。   Then, in order to join the divided precast cylindrical bodies 2, 3, fixing members 9, 9... Of the reinforcing bars 8, 8. The divided precast tubular bodies 2 are inserted along the longitudinal grooves 7 and 7 to connect the divided precast tubular bodies 2 and 3, and the fixing members 9, 9. The grout material G is filled in the gap portions in a state where the fixing cast members 5, 5... Of the precast cylindrical body 2 are positioned in the pocket-shaped notch grooves 6.

すなわち、前記分割プレキャスト筒状体２、３を接合した状態では、一方の分割プレキャスト筒状体２に配置される鉄筋４、４…と他方の分割プレキャスト筒状体３に配置される鉄筋８、８…とが、定着用埋込部材５と定着部材９とを介して接続されるようになり、一体的に成型したプレキャスト筒状体とほぼ同等の強度が確保できるようになっている。   That is, in the state where the divided precast cylindrical bodies 2 and 3 are joined, the reinforcing bars 4, 4... Arranged in one divided precast cylindrical body 2 and the reinforcing bars 8 arranged in the other divided precast cylindrical body 3, 8 are connected via the fixing embedding member 5 and the fixing member 9, so that substantially the same strength as that of the integrally formed precast cylindrical body can be secured.

ところで、分割プレキャスト筒状体２には、図５に示されるように、製作時に前記定着用埋込部材５、５…の設置間隔を保持するため、各定着用埋込部材５、５…が所定部位で接合された位置決め用固定部材１０を縦方向に沿って設けることが好ましい。この位置決め用固定部材１０は、図６及び図７に示されるように、前記定着用埋込部材５、５…に接合される棒状部１０ａが形成されたものであり、必要に応じて少なくとも最上段及び最下段の定着用埋込部材５、５に係止する突起状のツメ１０ｂが設けられている。前記位置決め用固定部材１０は、定着用埋込部材５のポケット状切欠き溝６内、好ましくは図７に示されるように、溝部６ａとポケット部６ｂとの境界の段差部分にそれぞれ溶接などによって接合して設けられるようにする。また、位置決め用固定部材１０は、各定着用埋込部材５、５…の設置間隔を明示しておくことにより、ゲージとして利用することもできる。   As shown in FIG. 5, the divided precast tubular body 2 has fixing fixing members 5, 5,... In order to maintain the installation interval of the fixing embedded members 5, 5,. It is preferable to provide the positioning fixing member 10 joined at a predetermined site along the vertical direction. As shown in FIGS. 6 and 7, the positioning fixing member 10 is formed with a rod-like portion 10a to be joined to the fixing embedding members 5, 5,... Protruding claws 10b that are engaged with the upper and lower fixing embedding members 5 and 5 are provided. The fixing member 10 for positioning is welded to the stepped portion of the boundary between the groove 6a and the pocket 6b, as shown in FIG. Make sure that they are joined together. The positioning fixing member 10 can also be used as a gauge by clearly indicating the installation intervals of the fixing embedding members 5, 5.

〔第２形態例〕
第２形態例に係る本発明は、図８及び図９に示されるように、前記分割プレキャスト筒状体２の接合端面に、上記第１形態例に係る定着用埋込部材５に代えて溝型断面の形材２０を埋設するようにしたものである。具体的には、分割プレキャスト筒状体２の接合端面には、開口を外部に臨ませた溝型断面の形材２０、２０を左右それぞれに埋設することにより、上下方向に連続する縦溝７、７が左右それぞれに形成されるとともに、上下方向に複数段で配置された各鉄筋４、４…が前記溝型断面の形材２０に連結されている。他方の分割プレキャスト筒状体３は、上記第１形態例と同様の構造である。 [Second embodiment]
As shown in FIG. 8 and FIG. 9, the present invention according to the second embodiment is provided with a groove on the joining end surface of the divided precast tubular body 2 instead of the fixing embedded member 5 according to the first embodiment. The shape member 20 having a mold section is embedded. Specifically, the longitudinal grooves 7 that are continuous in the vertical direction are embedded in the joint end face of the divided precast cylindrical body 2 by embedding the groove-shaped cross-sections 20 and 20 facing the outside on the left and right, respectively. , 7 are formed on each of the left and right sides, and the reinforcing bars 4, 4. The other divided precast tubular body 3 has the same structure as the first embodiment.

そして、これら分割プレキャスト筒状体２、３を接合するには、他方の分割プレキャスト筒状体３の接合端面に突出して設けられた鉄筋８、８…の定着部材９、９…を、一方の分割プレキャスト筒状体２の縦溝７、７に沿って挿入して分割プレキャスト筒状体２、３同士を連結した状態で、隙間部分にグラウト材Ｇを充填する。   And in order to join these division | segmentation precast cylindrical bodies 2 and 3, fixing member 9, 9 ... of the reinforcing bars 8, 8 ... which were provided and protruded in the joining end surface of the other division | segmentation precast cylinder 3 is made into one side. The grout material G is filled in the gap portion in a state where the divided precast cylindrical bodies 2 and 3 are connected by being inserted along the longitudinal grooves 7 and 7 of the divided precast cylindrical body 2.

前記溝型断面形材２０は、図９に示されるように、前面の長手方向に沿って内部空間２０ｂに連通する縦長の溝部２０ａが設けられたものである。また、溝型断面形材２０は、分割プレキャスト筒状体２の上面から下面に亘って連続的に配設されるとともに、その背面には上下方向に複数段で配置された各鉄筋４，４…に連結させるための開孔が設けられている。該溝型断面形材２０を鉄筋４，４…に連結するには、各鉄筋４，４…を前記開孔に挿通させ、前後面からナット２１、２１で締結されている。   As shown in FIG. 9, the groove-shaped cross-section member 20 is provided with a vertically long groove portion 20 a that communicates with the internal space 20 b along the longitudinal direction of the front surface. Further, the groove-shaped cross-section member 20 is continuously disposed from the upper surface to the lower surface of the divided precast cylindrical body 2, and the reinforcing bars 4, 4 disposed in a plurality of stages in the vertical direction on the rear surface. An opening is provided for connection to. In order to connect the groove-shaped cross-section member 20 to the reinforcing bars 4, 4..., The reinforcing bars 4 are inserted through the openings and fastened with nuts 21 and 21 from the front and rear surfaces.

ここで、図８(A)に示されるように、分割プレキャスト筒状体２、３を接合した状態で、定着部材９の基端側と溝型断面形材２０の溝部２０ａの内側との間に隙間が存在すると、分割プレキャスト筒状体２、３間に引張力が加わった場合、この隙間部分に充填されたグラウト材Ｇに圧縮力が加わり、グラウト材Ｇの強度不足によって分割プレキャスト筒状体２、３間に位置ズレが生じるおそれがある。そこで、図１０に示されるように、この隙間部分を埋めるため、定着部材９の基端側にスペーサー２２を備えるようにすることが好ましい。前記スペーサー２２により、グラウト材の破壊時に抜け出し量の低減を図るとともに、定着部材９と溝型断面形材２０間の圧縮面積の拡大により、充填されたグラウト材の圧縮破壊を防止する。   Here, as shown in FIG. 8A, in a state in which the divided precast cylindrical bodies 2 and 3 are joined, between the base end side of the fixing member 9 and the inside of the groove portion 20a of the groove-shaped cross-section member 20. If there is a gap in the gap, when a tensile force is applied between the divided precast cylindrical bodies 2 and 3, a compressive force is applied to the grout material G filled in the gap portion, and the divided precast cylindrical shape due to insufficient strength of the grout material G There is a possibility that positional displacement occurs between the bodies 2 and 3. Therefore, as shown in FIG. 10, it is preferable to provide a spacer 22 on the base end side of the fixing member 9 in order to fill this gap portion. The spacer 22 reduces the amount of pullout when the grout material is broken, and prevents the filled grout material from being compressed and broken by expanding the compression area between the fixing member 9 and the groove-shaped cross-sectional shape member 20.

前記スペーサー２２は、図１１に示されるように、分割プレキャスト筒状体３の接合端面に突出して設けられた鉄筋８、８…の定着部材９、９…を上下方向に連結する細長の板状体からなり、その平面部には鉄筋８、８…を挿通するための開孔２２ａ、２２ａ…が設けられている。なお、スペーサー２２は、各鉄筋８に個別的に設けられる座金状のものであってもよい。また、このスペーサー２２は、上記第１形態例に係る分割プレキャスト筒状体３においても同様に用いることができる。   As shown in FIG. 11, the spacer 22 is an elongated plate that connects the fixing members 9, 9... Of the reinforcing bars 8, 8. It consists of a body, The opening 22a, 22a ... for inserting the reinforcing bars 8,8 ... is provided in the plane part. In addition, the spacer 22 may be a washer-like one provided individually on each reinforcing bar 8. Further, the spacer 22 can be similarly used in the divided precast tubular body 3 according to the first embodiment.

本発明は、塔状構造物におけるプレキャストコンクリート部材の接合構造に対して好適とされるが、半地下道路トンネル、地下駐車場、駐輪場、共同溝、地下鉄、地下道などの地下構造物などの一般的な構造物におけるプレキャストコンクリート部材の接合構造に対しても適用が可能である。   The present invention is suitable for a precast concrete member joining structure in a tower-like structure, but is generally used for underground structures such as semi-underground road tunnels, underground parking lots, bicycle parking lots, joint grooves, subways, and underground passages. The present invention can also be applied to a joint structure of precast concrete members in a simple structure.

プレキャスト筒状体１の斜視図である。1 is a perspective view of a precast tubular body 1. FIG. 分割プレキャスト筒状体２、３の接合要領を示す斜視図である。It is a perspective view which shows the joining point of the division | segmentation precast cylindrical bodies 2 and 3. FIG. 分割プレキャスト筒状体２、３の接合端部近傍を示す(A)は横断面図、(B)は縦断面図である。(A) which shows the joining edge part vicinity of the division | segmentation precast cylindrical bodies 2 and 3 is a cross-sectional view, (B) is a longitudinal cross-sectional view. その接合端面の要部拡大斜視図である。It is a principal part expansion perspective view of the joining end surface. 位置決め用固定部材１０を配設した分割プレキャスト筒状体２、３の接合端部近傍を示す(A)は横断面図、(B)は縦断面図である。(A) which shows the vicinity of the joining end part of the division | segmentation precast cylindrical bodies 2 and 3 which have arrange | positioned the fixing member 10 for positioning is a cross-sectional view, (B) is a longitudinal cross-sectional view. 位置決め用固定部材１０を示す(A)は側面図、(B)は正面図である。(A) which shows the positioning fixing member 10 is a side view, (B) is a front view. 位置決め用固定部材１０によって連結された状態を示す定着用埋込部材４の斜視図である。FIG. 4 is a perspective view of a fixing embedded member 4 showing a state where the fixing embedded member 4 is connected by a positioning fixing member 10. 第２形態例に係る分割プレキャスト筒状体２、３の接合端部近傍を示す(A)は横断面図、(B)は縦断面図である。(A) which shows the joining edge part vicinity of the division | segmentation precast cylindrical bodies 2 and 3 which concern on a 2nd form example is a cross-sectional view, (B) is a longitudinal cross-sectional view. その接合端面の要部拡大斜視図である。It is a principal part expansion perspective view of the joining end surface. スペーサー２２を配設した分割プレキャスト筒状体２、３の接合端部近傍を示す(A)は横断面図、(B)は縦断面図である。(A) which shows the joining edge part vicinity of the division | segmentation precast cylindrical bodies 2 and 3 which arrange | positioned the spacer 22 is a cross-sectional view, (B) is a longitudinal cross-sectional view. スペーサー２２を示す(A)は縦断面図、(B)は正面図である。(A) which shows the spacer 22 is a longitudinal cross-sectional view, (B) is a front view. 従来の分割プレキャスト筒状体５０、５０の接合要領を示す斜視図である。It is a perspective view which shows the joining point of the conventional division | segmentation precast cylindrical bodies 50 and 50. FIG. 従来の分割プレキャスト筒状体５０、５０の接合端部近傍を示す(A)は横断面図、(B)は縦断面図である。(A) which shows the joining edge part vicinity of the conventional division | segmentation precast cylindrical bodies 50 and 50 is a cross-sectional view, (B) is a longitudinal cross-sectional view.

符号の説明Explanation of symbols

１…プレキャスト筒状体、２・３…分割プレキャスト筒状体、４・８…鉄筋、５…定着用埋込部材、６…切欠き溝、７…縦溝、９…定着部材、１０…位置決め用固定部材、Ｇ…グラウト材   DESCRIPTION OF SYMBOLS 1 ... Precast cylindrical body, 2 * 3 ... Divided precast cylindrical body, 4 * 8 ... Rebar, 5 ... Embedded member for fixing, 6 ... Notch groove, 7 ... Vertical groove, 9 ... Fixing member, 10 ... Positioning Fixing member, G ... grout material

Claims (5)

プレキャストコンクリート部材同士を接合するための接合構造であって、
一方のプレキャストコンクリート部材の接合端面には、上下方向に複数段で配置された各鉄筋に接合された定着用埋込部材が埋設され、前記定着用埋込部材には開口を外部に臨ませたポケット状の切欠き溝が形成されるとともに、前記切欠き溝の形状と同形状で上下方向に沿ってコンクリートに切欠き溝が形成されることによって上下方向に連続する縦溝が形成され、
他方のプレキャストコンクリート部材の接合端面には、上下方向に複数段で配置された各鉄筋が外部まで突出して設けられるとともに、この突出した鉄筋の先端部に前記ポケット状切欠き溝に嵌合される定着部材が固定され、
前記他方のプレキャストコンクリート部材の接合端面に突出して設けられた鉄筋の定着部材を、前記一方のプレキャストコンクリート部材の縦溝に沿って挿入してプレキャストコンクリート部材同士を連結するとともに、前記他方のプレキャストコンクリート部材の定着部材を、前記一方のプレキャストコンクリート部材の定着用埋込部材のポケット状切欠き溝部分に位置決めした状態で、隙間部分にグラウト材を充填したことを特徴とするプレキャストコンクリート部材の接合構造。 It is a joining structure for joining precast concrete members,
On the joint end face of one precast concrete member, there is embedded a fixing embedded member bonded to each reinforcing bar arranged in a plurality of stages in the vertical direction, and the fixing embedded member has an opening facing outside. A pocket-shaped cutout groove is formed, and a vertical groove continuous in the vertical direction is formed by forming the cutout groove in the concrete along the vertical direction in the same shape as the shape of the cutout groove,
On the joint end surface of the other precast concrete member, the reinforcing bars arranged in a plurality of stages in the vertical direction are provided so as to protrude to the outside, and the front end of the protruding reinforcing bar is fitted into the pocket-shaped notch groove. The fixing member is fixed,
The fixing member of the reinforcing bar provided protruding from the joining end surface of the other precast concrete member is inserted along the longitudinal groove of the one precast concrete member to connect the precast concrete members to each other, and the other precast concrete A joint structure for a precast concrete member, characterized in that a grout material is filled in a gap portion in a state where the fixing member of the member is positioned in a pocket-shaped notch groove portion of the fixing embedded member of the one precast concrete member. . 前記一方のプレキャストコンクリート部材において、製作時に前記定着用埋込部材の設置間隔を保持するために、各定着用埋込部材が所定部位で接合された位置決め用固定部材が縦方向に沿って設けられている請求項１記載のプレキャストコンクリート部材の接合構造。   In the one precast concrete member, in order to maintain the installation interval of the fixing embedding member at the time of manufacture, a positioning fixing member in which each fixing embedding member is joined at a predetermined portion is provided along the vertical direction. The joint structure for precast concrete members according to claim 1. プレキャストコンクリート部材同士を接合するための接合構造であって、
一方のプレキャストコンクリート部材の接合端面には、開口を外部に臨ませた溝型断面の形材が埋設されることにより、上下方向に連続する縦溝が形成されるとともに、上下方向に複数段で配置された各鉄筋が前記溝型断面の形材に連結され、
他方のプレキャストコンクリート部材の接合端面には、上下方向に複数段で配置された各鉄筋が外部まで突出して設けられるとともに、この突出した鉄筋の先端部に前記溝型断面の形材に嵌合される定着部材が固定され、
前記他方のプレキャストコンクリート部材の接合端面に突出して設けられた鉄筋の定着部材を、前記一方のプレキャストコンクリート部材の縦溝に沿って挿入してプレキャストコンクリート部材同士を連結した状態で、隙間部分にグラウト材を充填したことを特徴とするプレキャストコンクリート部材の接合構造。 It is a joining structure for joining precast concrete members,
On the joint end face of one of the precast concrete members, a groove-shaped cross-section with the opening facing the outside is embedded to form a vertical groove that is continuous in the vertical direction, and in multiple stages in the vertical direction. Each rebar arranged is connected to the profile of the channel cross section,
On the joint end surface of the other precast concrete member, the reinforcing bars arranged in a plurality of stages in the vertical direction are provided so as to protrude to the outside, and fitted to the shape of the groove-type cross section at the tip of the protruding reinforcing bars. Fixing member is fixed,
A rebar fixing member provided protruding from the joint end face of the other precast concrete member is inserted along the longitudinal groove of the one precast concrete member and the precast concrete members are connected to each other. A precast concrete member joining structure characterized by being filled with a material. 前記定着部材を前記縦溝に挿入した状態で、前記定着部材とポケット状切欠き溝又は溝型断面形材の溝部形成部材との隙間を埋めるため、前記定着部材の基端側にスペーサーが配設されている請求項１〜３いずれかに記載のプレキャストコンクリート部材の接合構造。   In a state where the fixing member is inserted into the longitudinal groove, a spacer is disposed on the base end side of the fixing member in order to fill a gap between the fixing member and a pocket-shaped notch groove or a groove forming member of a groove-shaped cross-section. The joint structure of precast concrete members according to any one of claims 1 to 3. 前記プレキャストコンクリート部材は、２分割された半円リング状プレキャスト部材とされる請求項１〜４いずれかに記載のプレキャストコンクリート部材の接合構造。   The precast concrete member joining structure according to any one of claims 1 to 4, wherein the precast concrete member is a semicircular ring-shaped precast member divided into two.
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Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2014141911A1 (en) 2013-03-13 2014-09-18 戸田建設株式会社 Floating offshore wind power generation facility
KR101462863B1 (en) * 2013-08-29 2014-12-04 주식회사 포스코 Precast segment assembly and precast segment structure by using of it)
JP2015200069A (en) * 2014-04-04 2015-11-12 株式会社Ihi Connection method of precast block and prestress tank using the same
KR20160027476A (en) * 2014-08-29 2016-03-10 주식회사 포스코 Precast segment unit and precast segment structure by using of it)
JP2017190629A (en) * 2016-04-14 2017-10-19 大成建設株式会社 Joint structure of precast member
CN107829498A (en) * 2017-11-21 2018-03-23 北京建筑大学 A kind of rotatable pre-buried external member and prefabricated assembled wall structure
JP2018141341A (en) * 2017-02-28 2018-09-13 三井住友建設株式会社 Mounting structure of precast wall balustrade and mounting method thereof
JP2019039292A (en) * 2017-08-25 2019-03-14 戸田建設株式会社 Joint structure of concrete precast floor slab
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Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS52149525A (en) * 1976-06-09 1977-12-12 Yasuhiro Toyosu Spark ignition device for engine
JPH0430049A (en) * 1990-05-25 1992-02-03 Sekisui House Ltd Bonding tool for precast concrete member
JPH06146439A (en) * 1992-11-16 1994-05-27 Ohbayashi Corp Joining method for precast wall
JPH09268887A (en) * 1996-04-03 1997-10-14 P C Kk Connecting and fixing device for pre-fabricated concrete member
JPH11131822A (en) * 1997-10-24 1999-05-18 Maeda Corp Joint and concrete structure

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS52149525A (en) * 1976-06-09 1977-12-12 Yasuhiro Toyosu Spark ignition device for engine
JPH0430049A (en) * 1990-05-25 1992-02-03 Sekisui House Ltd Bonding tool for precast concrete member
JPH06146439A (en) * 1992-11-16 1994-05-27 Ohbayashi Corp Joining method for precast wall
JPH09268887A (en) * 1996-04-03 1997-10-14 P C Kk Connecting and fixing device for pre-fabricated concrete member
JPH11131822A (en) * 1997-10-24 1999-05-18 Maeda Corp Joint and concrete structure

Cited By (18)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US9777713B2 (en) 2013-03-13 2017-10-03 Toda Corporation Floating offshore wind power generation facility
WO2014141911A1 (en) 2013-03-13 2014-09-18 戸田建設株式会社 Floating offshore wind power generation facility
KR102155394B1 (en) * 2013-03-13 2020-09-11 토다켄세츠 가부시키카이샤 Floating offshore wind power generation facility
KR20150131080A (en) * 2013-03-13 2015-11-24 토다켄세츠 가부시키카이샤 Floating offshore wind power generation facility
JP2014173586A (en) * 2013-03-13 2014-09-22 Toda Constr Co Ltd Floating body offshore wind turbine generator facility
EP2985453A4 (en) * 2013-03-13 2016-10-26 Toda Corp Floating offshore wind power generation facility
KR101462863B1 (en) * 2013-08-29 2014-12-04 주식회사 포스코 Precast segment assembly and precast segment structure by using of it)
JP2015200069A (en) * 2014-04-04 2015-11-12 株式会社Ihi Connection method of precast block and prestress tank using the same
KR20160027476A (en) * 2014-08-29 2016-03-10 주식회사 포스코 Precast segment unit and precast segment structure by using of it)
KR101674725B1 (en) * 2014-08-29 2016-11-10 주식회사 포스코 Precast segment unit and precast segment structure by using of it)
JP2017190629A (en) * 2016-04-14 2017-10-19 大成建設株式会社 Joint structure of precast member
JP2018141341A (en) * 2017-02-28 2018-09-13 三井住友建設株式会社 Mounting structure of precast wall balustrade and mounting method thereof
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JP7096734B2 (en) 2017-08-25 2022-07-06 戸田建設株式会社 Joint structure of concrete precast deck
CN107829498B (en) * 2017-11-21 2023-06-02 北京建筑大学 Rotatable pre-buried external member and prefabricated wall body structure
CN107829498A (en) * 2017-11-21 2018-03-23 北京建筑大学 A kind of rotatable pre-buried external member and prefabricated assembled wall structure
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JP7210237B2 (en) 2018-11-15 2023-01-23 ジオスター株式会社 Concrete member connection structure and precast concrete member connection method

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