JP6512433B2 - Joining method of PCa member - Google Patents
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- JP6512433B2 JP6512433B2 JP2015079996A JP2015079996A JP6512433B2 JP 6512433 B2 JP6512433 B2 JP 6512433B2 JP 2015079996 A JP2015079996 A JP 2015079996A JP 2015079996 A JP2015079996 A JP 2015079996A JP 6512433 B2 JP6512433 B2 JP 6512433B2
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Description
本発明は、ＰＣａ部材を接合する方法に関する。 The present invention relates to a method of joining PCa members.
従来、ＰＣａ化率を高め、現場打ちコンクリートを減らすことで工期短縮を図る技術の開発が進められ、実用化されている。 Conventionally, development of technology for shortening construction period by increasing PCa conversion rate and reducing cast-in-place concrete has been promoted and put to practical use.
具体的には、下部ＰＣａ柱（下部ＰＣａ部材）の上端部に機械式継手のスリーブを複数設け、下部ＰＣａ柱の上に柱梁仕口部用のいわゆるレンコンＰＣａ（パネルゾーンＰＣａ、接合用ＰＣａ部材）を設置し、下端部から下方に向けて複数の主筋を突出させた上部ＰＣａ柱（上部ＰＣａ部材）をレンコンＰＣａ上に設置するなどの構法がある。 Specifically, a plurality of sleeves of mechanical joints are provided at the upper end of lower PCa column (lower PCa member), and so-called lotus root PCa (panel zone PCa, joint PCa for joint) for lower beam column And the upper PCa pillar (upper PCa member) in which a plurality of main bars are projected downward from the lower end portion is installed on the lotus root PCa.
このとき、上部ＰＣａ柱の下方に突出した複数の主筋をそれぞれ、シース管に挿入してレンコンＰＣａを貫通させ、さらに下部ＰＣａ柱の機械式継手のスリーブ内に差し込む。そして、レンコンＰＣａの複数のシース管内や下部ＰＣａ柱の複数の機械式継手のスリーブ内、上下に隣り合うＰＣａ部材の間の下方目地部、上方目地部にグラウト材を注入し、下部ＰＣａ柱とレンコンＰＣａと上部ＰＣａ柱の各ＰＣａ部材を一体に接合する（例えば、特許文献１参照）。 At this time, the plurality of main bars projecting downward from the upper PCa pillar are respectively inserted into the sheath tube to penetrate the lotus root PCa and further inserted into the sleeve of the mechanical joint of the lower PCa pillar. Then, grout material is injected into the lower joint between upper and lower adjacent PCa members in the sleeves of the plurality of sheath tubes and the plurality of mechanical joints of the lower PCa pillar of the lotus root PCa, and the lower PCa pillar Each PCa member of the lotus root PCa and the upper PCa pillar is integrally joined (see, for example, Patent Document 1).
一方、レンコンＰＣａのシース管内及び目地部にグラウト材を注入する際には、例えば、下部ＰＣａ柱に予め設けた下部供給口からグラウト材を注入し、複数のスリーブ内、さらに水平に流入させて下方目地部にグラウト材を充填させる。また、下方目地部からグラウト材をレンコンＰＣａの複数のシース管内に順次流入させ、シース管内を上昇したグラウト材が上方目地部に達した段階で下部供給口からのグラウト材の注入を停止する。そして、レンコンＰＣａに予め設けた上部供給口から上方目地部にグラウト材を注入する。 On the other hand, when the grout material is injected into the sheath tube and joint portion of the lotus root PCa, for example, the grout material is injected from the lower supply port provided in advance in the lower PCa column, and flows horizontally in the plurality of sleeves. Fill the lower joint with grout. Further, the grout material is sequentially flowed into the plurality of sheath tubes of the lotus root PCa from the lower joint portion, and the injection of the grout material from the lower supply port is stopped when the grout material raised in the sheath tube reaches the upper joint portion. Then, a grout material is injected into the upper joint portion from the upper supply port provided in advance in the lotus root PCa.
また、図４に示すように、従来、下部供給口に繋がるグラウト吐出口１を下方目地部２の角部側（外周縁側）に設け、このグラウト吐出口１から吐出したグラウト材３を下方目地部２の角部から順次複数のスリーブ４内に充填させつつ下方目地部２の全面に流入させ、下方目地部２からレンコンＰＣａの複数のシース管内にグラウト材３を流入させるようにしている。 Also, as shown in FIG. 4, conventionally, a grout discharge port 1 connected to the lower supply port is provided on the corner side (outer peripheral edge side) of the lower joint portion 2, and the grout material 3 discharged from the grout discharge port 1 is used as the lower joint The grout material 3 is made to flow from the lower joint portion 2 into the plurality of sheath tubes of the lotus root PCa from the lower joint portion 2 while flowing into the plurality of sleeves 4 sequentially from the corner of the portion 2 while filling the sleeves 4 sequentially.
このように一つの角部側に設けたグラウト吐出口からグラウト材を吐出させ、対角方向に流動させて下方目地部全体に充填するようにしているため、グラウト材の流動距離が長くなる。これにより、流動に伴ってグラウト材の性状に変化が生じるおそれがある。 As described above, the grout material is discharged from the grout discharge port provided at one corner portion side, and is made to flow in the diagonal direction to fill the entire lower joint portion, so that the flow distance of the grout material becomes long. As a result, the properties of the grout material may change with the flow.
また、複数のシース管内のグラウト材に大きなヘッド差が生じ、このヘッド差に起因してエア（エントラップドエア）がグラウト材に巻き込まれやすくなり、さらに経時的にブリージングによるヘッドの沈降が生じやすくなる。 In addition, a large head difference occurs in the grout material in a plurality of sheath tubes, air (entrapped air) is easily caught in the grout material due to the head difference, and furthermore, sedimentation of the head due to bleeding occurs with time. It will be easier.
なお、上方目地部のグラウト注入作業時においても、上部供給口に繋がるグラウト吐出口を上方目地部の角部側に設け、このグラウト吐出口から吐出したグラウト材を上方目地部の角部から全面に流入させるようにしており、上記と同様の不都合が生じる。 In addition, even in the grout injection work of the upper joint, the grout outlet connected to the upper supply port is provided on the corner of the upper joint, and the grout material discharged from the grout outlet is entirely from the corner of the upper joint The same problem as described above occurs.
このようなことから、より好適にグラウト注入作業を行うことができ、確実に施工品質を確保する（向上させる）ことを可能にする手法の開発が強く望まれていた。 From such a thing, development of the method of making it possible to carry out grout injection work more suitably, and ensuring a construction quality reliably (improvement) was strongly desired.
本発明は、上記事情に鑑み、より好適にグラウト注入作業を行うことができ、確実に施工品質を確保してＰＣａ部材を接合することが可能なＰＣａ部材の接合方法を提供することを目的とする。 In view of the above-described circumstances, the present invention has an object to provide a bonding method of a PCa member capable of performing grout injection work more suitably and reliably securing construction quality and joining PCa members. Do.
上記の目的を達するために、この発明は以下の手段を提供している。 In order to achieve the above object, the present invention provides the following means.
本発明のＰＣａ部材の接合方法は、上端部に複数の筒状のスリーブを一体に埋設して形成した下部ＰＣａ部材の上に、上端面から下端面に開口して貫通する複数の貫通孔を備えて形成した接合用ＰＣａ部材を配置し、下端面から下方に複数の鉄筋を突出させて形成した上部ＰＣａ部材を、前記鉄筋を前記貫通孔内に挿通するとともに前記スリーブに挿入して前記接合用ＰＣａ部材の上に配置し、前記スリーブ内と、前記下部ＰＣａ部材と前記接合用ＰＣａ部材の間の下方目地部と、前記貫通孔内と、前記上部ＰＣａ部材と前記接合用ＰＣａ部材の間の上方目地部とにグラウト材を注入して、前記下部ＰＣａ部材と前記接合用ＰＣａ部材と前記上部ＰＣａ部材を一体に接合する方法において、前記下方目地部および前記上方目地部にグラウト材を注入する際に、グラウト材の吐出口を前記下方目地部および前記上方目地部のそれぞれ中央部に設けるようにし、先に、前記下方目地部から前記グラウト材を注入して、前記貫通孔の上部まで注入し、その後、前記上方目地部から前記グラウト材を注入して、前記貫通孔および前記上方目地部に前記グラウト材を充填させることを特徴とする。 In the method of the present invention for joining PCa members, a plurality of through holes, which are opened from the upper end face to the lower end face, are formed on the lower PCa member formed by embedding a plurality of cylindrical sleeves integrally in the upper end. An upper PCa member formed by arranging and forming a joining PCa member and projecting a plurality of reinforcing bars downward from the lower end face is inserted into the through hole while inserting the reinforcing bar into the through hole and the joining is performed. And the lower joint between the lower PCa member and the joining PCa member, the through hole, the upper PCa member, and the joining PCa member. by injecting grout into an upper joint portion of the lower PCa member and the and connecting PCa member in the method of joining the upper PCa member integrally the lower joints and grout in the upper joint portion When injecting, the discharge port of the grout to be provided in each central portion of the lower joint portion and the upper joints, previously, by injecting the grout from the lower joint portion, the upper portion of the through hole And injecting the grout material from the upper joint portion to fill the through hole and the upper joint portion with the grout material .
本発明のＰＣａ部材の接合方法においては、目地部底面の中央部からグラウト材を吐出させるようにしたことで、目地部にグラウト材を放射方向に均一に流入させることが可能になる。また、外周縁部までのグラウト材の流動距離を従来よりも小さくすることができる。これにより、施工品質の向上を図ることが可能になる。 In the bonding method of the PCa member of the present invention, by discharging the grout material from the central portion of the bottom surface of the joint portion, the grout material can be uniformly flowed in the radial direction into the joint portion. Moreover, the flow distance of the grout material to the outer peripheral edge portion can be made smaller than in the prior art. This makes it possible to improve the quality of construction.
以下、図１から図３を参照し、本発明の一実施形態に係るＰＣａ部材の接合方法について説明する。 Hereinafter, with reference to FIGS. 1 to 3, a method of bonding PCa members according to an embodiment of the present invention will be described.
ここで、本実施形態のＰＣａ部材（プレキャストコンクリート部材）の接合方法は、従来と比較し、より好適にグラウト注入作業を行うことができ、確実に施工品質を確保してＰＣａ部材同士を接合することが可能な方法に関するものである。 Here, the joining method of the PCa member (precast concrete member) of the present embodiment can perform grout injection more suitably compared to the conventional method, and reliably secures the construction quality and joins the PCa members together. It is about the possible way.
はじめに、図１に示すように、本実施形態では、下部ＰＣａ部材である下部ＰＣａ柱５上に接合用ＰＣａ部材である柱梁仕口部用のレンコンＰＣａ（パネルゾーンＰＣａ）６を設置し、上部ＰＣａ部材である上部ＰＣａ柱７をレンコンＰＣａ６上に設置し、これら下部ＰＣａ柱５とレンコンＰＣａ６、レンコンＰＣａ６と上部ＰＣａ柱７、レンコンＰＣａ６を介して上部ＰＣａ柱７と下部ＰＣａ柱５をそれぞれ接合する。 First, as shown in FIG. 1, in the present embodiment, a lotus root PCa (panel zone PCa) 6 for a beam-to-column connection portion which is a joining PCa member is installed on the lower PCa pillar 5 which is a lower PCa member. The upper PCa pillar 7 which is the upper PCa member is installed on the lotus root PCa6, the lower PCa pillar 5 and the lotus root PCa6, the lotus root PCa6 and the upper PCa pillar 7, and the upper PCa pillar 7 and the lower PCa pillar 5 via the lotus root PCa6 Join.
また、本実施形態において、下部ＰＣａ柱５は、その上端部に機械式継手である複数の略有底円筒状のスリーブ４を一体に埋設して形成されている。また、これら機械式継手の複数のスリーブ４は、下部ＰＣａ柱５の複数の主筋５ａの上端にそれぞれ接続し、軸線方向を上下方向に向け、且つ下部ＰＣａ柱５の上端面（上面）に開口して設けられている。 Further, in the present embodiment, the lower PCa column 5 is formed by integrally embedding a plurality of substantially bottomed cylindrical sleeves 4 which are mechanical joints at the upper end portion thereof. Further, the plurality of sleeves 4 of these mechanical joints are respectively connected to the upper ends of the plurality of main bars 5a of the lower PCa pillar 5, and the axial direction is directed vertically, and the upper end surface (upper surface) of the lower PCa pillar 5 is opened. Provided.
レンコンＰＣａ６は、上端面から下端面に貫通し、下部ＰＣａ柱５の各スリーブ４に連通するように所定位置に配列して埋設された複数のシース管（貫通孔）８を備えて形成されている。 The lotus root PCa 6 is formed to have a plurality of sheath tubes (through holes) 8 arranged and embedded at predetermined positions so as to penetrate from the upper end face to the lower end face and to communicate with the sleeves 4 of the lower PCa pillar 5 There is.
上部ＰＣａ柱７は、下端面（下面）から複数の主筋７ａをそれぞれ、所定の長さ下方に延出（突出）させて形成されている。 The upper PCa pillar 7 is formed by extending (projecting) a plurality of main reinforcements 7 a downward from the lower end surface (lower surface) by a predetermined length.
そして、本実施形態のＰＣａ部材の接合方法では、レンコンＰＣａ６のシース管８、下部ＰＣａ柱５のスリーブ４に、下方に突出する主筋７ａを差し込んで上部ＰＣａ柱７を設置した段階で、各スリーブ４内やシース管８内、上下に隣り合うＰＣａ部材（５と６、６と７）の間の目地部２、９にグラウト材３を注入し、下部ＰＣａ柱５とレンコンＰＣａ６と上部ＰＣａ柱７を一体に接合する。 And in the joining method of the PCa member of this embodiment, each sleeve is installed at the stage where the upper PCa pillar 7 is installed by inserting the main muscle 7a projecting downward into the sheath tube 8 of the lotus root PCa6 and the sleeve 4 of the lower PCa pillar 5 The grout material 3 is injected into the joint portions 2 and 9 between the PCa members (5 and 6, 6 and 7) adjacent in the upper and lower portions in the sheath tube 8 and the lower PCa pillar 5, the lotus root PCa6 and the upper PCa pillar. Join 7 together.
一方、本実施形態では、図１及び図２に示すように、下方目地部２にグラウト材３を吐出させるグラウト吐出口１０を下部ＰＣａ柱５の上端面の中央（下方目地部２の中央部）に、このグラウト吐出口１０に繋がる下部供給口１１を下部ＰＣａ柱５の上端部側の側面に設ける。 On the other hand, in the present embodiment, as shown in FIGS. 1 and 2, the center of the upper end face of the lower PCa pillar 5 (the central portion of the lower joint portion 2) the grout discharge port 10 for discharging the grout material 3 to the lower joint portion 2 And the lower supply port 11 connected to the grout discharge port 10 is provided on the side surface of the upper end portion side of the lower PCa pillar 5.
また、図１及び図３に示すように、上方目地部９にグラウト材３を吐出させるグラウト吐出口１２をレンコンＰＣａ６の上端面の中央（上方目地部９の中央部）に、このグラウト吐出口１２に繋がる上部供給口１３をレンコンＰＣａ６の上端部側の側面に設ける。 Further, as shown in FIGS. 1 and 3, the grout discharge port 12 for discharging the grout material 3 to the upper joint portion 9 is located at the center of the upper end face of the lotus root PCa 6 (central portion of the upper joint portion 9). An upper supply port 13 connected to 12 is provided on the side surface on the upper end side of the lotus root PCa 6.
なお、下方目地部２にグラウト材３を供給するグラウト吐出口１０、下部供給口１１をレンコンＰＣａ６に、上方目地部９にグラウト材３を供給するグラウト吐出口１２、上部供給口１３を上部ＰＣａ柱７に設けるようにしてもよい。 In addition, the grout discharge port 10 for supplying the grout material 3 to the lower joint portion 2 and the lower supply port 11 to the lotus root PCa 6 and the grout discharge port 12 for supplying the grout material 3 to the upper joint portion 9 and the upper supply port 13 to the upper PCa It may be provided on the pillar 7.
そして、本実施形態のＰＣａ部材の接合方法では、下部供給口１１からグラウト材３を注入すると、下方目地部２の中央部からグラウト材３が吐出され、下方目地部２内に中央部から放射方向に均一に流入することになる。 Then, in the bonding method of the PCa member of the present embodiment, when the grout material 3 is injected from the lower supply port 11, the grout material 3 is discharged from the central portion of the lower joint portion 2, and is radiated from the central portion into the lower joint portion 2. It will flow uniformly in the direction.
また、グラウト材３は下部ＰＣａ柱５の複数のスリーブ４内に順次流入し、さらにレンコンＰＣａ６の複数のシース管８内をほぼ均一に上昇して上方目地部９に到達する。このとき、グラウト材３の上昇を目視で管理し、グラウト材３をシース管８の上部で止めるようにしてオーバーフローの発生を防止する。 Further, the grout material 3 sequentially flows into the plurality of sleeves 4 of the lower PCa pillar 5, and further rises substantially uniformly in the plurality of sheath tubes 8 of the lotus root PCa 6 to reach the upper joint portion 9. At this time, the rise of the grout material 3 is visually controlled, and the grout material 3 is stopped at the upper part of the sheath tube 8 to prevent the occurrence of the overflow.
そして、このように下方目地部２へのグラウト注入作業が完了した段階で、上部供給口１３からグラウト材３を注入し、上方目地部９の中央部に設けたグラウト吐出口１２からグラウト材３を吐出させる。これにより、上方目地部９内に中央部から放射方向にグラウト材３が均一に流入し、上方目地部９に充填される。また、このとき、レンコンＰＣａ６の上端面に開口する各シース管８内にグラウト材３が流入することで、グラウト材３にヘッド差が生じないようにして（ヘッド差が抑えられて）複数のシース管８内にそれぞれグラウト材３が注入される。 Then, when the grout injection work to the lower joint portion 2 is completed as described above, the grout material 3 is injected from the upper supply port 13 and the grout material 3 is provided from the grout discharge port 12 provided at the central portion of the upper joint portion 9. Discharge the As a result, the grout material 3 uniformly flows from the central portion in the radial direction into the upper joint portion 9 and is filled in the upper joint portion 9. Also, at this time, the grout material 3 flows into each sheath tube 8 opened at the upper end surface of the lotus root PCa 6 so that a head difference does not occur in the grout material 3 (a head difference is suppressed) The grout material 3 is injected into the sheath tube 8 respectively.
したがって、本実施形態のＰＣａ部材の接合方法においては、目地部２、９の底面の中央部からグラウト材３を吐出させるようにしたことで、グラウト材３を目地部２、９の全面に均一に充填することが可能になる。 Therefore, in the bonding method of the PCa member of the present embodiment, the grout material 3 is discharged from the central portion of the bottom surface of the joint portions 2 and 9 to make the grout material 3 uniformly on the entire joint portions 2 and 9. It will be possible to
また、グラウト材３を中央部から放射方向に流動させることができ、従来と比較し、外周縁部までの流動距離を短くすることができる。これにより、レンコンＰＣａ６のシース管８内のグラウト材３の注入上昇も均一にすることができる。すなわち、グラウト材３を目地部２、９の角部側から注入する場合と比較し、複数のシース管内（貫通孔）８でのグラウト材３の上昇のバラつきをなくすことができる（小さく抑えることができる）。 Further, the grout material 3 can be made to flow in the radial direction from the central portion, and the flow distance to the outer peripheral portion can be shortened as compared with the conventional case. Thereby, the injection | pouring raise of the grout material 3 in the sheath pipe | tube 8 of lotus root PCa6 can also be made uniform. That is, as compared with the case where the grout material 3 is injected from the corner side of the joint portions 2 and 9, variation in the rise of the grout material 3 in the plurality of sheath tubes (through holes) 8 can be eliminated (suppressed small Can)
よって、流動に伴ってグラウト材３の性状に変化が生じにくく、また、複数のシース管８内のグラウト材３に大きなヘッド差が生じることを防止でき、このヘッド差に起因したエア（エントラップドエア）の巻き込みやブリージングの発生を抑えることが可能になり、施工品質の向上を図ることが可能になる。 Therefore, it is hard to produce change in the property of the grout material 3 with a flow, and it can prevent that a big head difference arises in the grout materials 3 in a plurality of sheath tubes 8, and air (en trap It becomes possible to suppress the occurrence of de-airing and bleeding, and to improve the quality of construction.
さらに、本実施形態のような中央注入方式では、目地型枠を外した状態で注入することも可能になるため、目地部２、９内でのグラウト材３の流入状態、シース管８内への流入状態（シース管８内での上昇）を目視で容易に確認することができる。 Furthermore, in the central injection method as in this embodiment, since the injection can be performed with the joint form frame removed, the inflow state of the grout material 3 in the joint portions 2 and 9 into the sheath tube 8 The inflow state (rising in the sheath tube 8) can be easily confirmed visually.
以上、本発明に係るＰＣａ部材の接合方法の一実施形態について説明したが、本発明は上記の一実施形態に限定されるものではなく、その趣旨を逸脱しない範囲で適宜変更可能である。 As mentioned above, although one Embodiment of the bonding method of the PCa member which concerns on this invention was described, this invention is not limited to said one Embodiment, It can change suitably in the range which does not deviate from the meaning.
例えば、本実施形態では、下部ＰＣａ部材が下部ＰＣａ柱５、接合用ＰＣａ部材が柱梁接合用のレンコンＰＣａ６、上部ＰＣａ部材が上部ＰＣａ柱７であるものとして説明を行ったが、必ずしも下部ＰＣａ部材や上部ＰＣａ部材が柱、接合用ＰＣａ部材が柱梁接合用のＰＣａ部材でなくてもよい。 For example, in the present embodiment, the lower PCa member is the lower PCa pillar 5, the joining PCa member is the lotus root PCa 6 for beam-column connection, and the upper PCa member is the upper PCa pillar 7. The member or the upper PCa member may not be a pillar, and the joining PCa member may not be a PCa member for beam-column joining.
１ 従来のグラウト吐出口
２ 下方目地部（目地部）
３ グラウト材
５ 下部ＰＣａ柱（下部ＰＣａ部材）
５ａ 主筋（鉄筋）
６ レンコンＰＣａ（接合用ＰＣａ部材）
７ 上部ＰＣａ柱（上部ＰＣａ部材）
７ａ 主筋（鉄筋）
８ シース管（貫通孔）
９ 上方目地部（目地部）
１０ グラウト吐出口
１１ 下部供給口
１２ グラウト吐出口
１３ 上部供給口
1 Conventional grout outlet 2 Lower joint (joint)
3 Grout material 5 lower PCa pillar (lower PCa member)
5a Main bars (rebars)
6 Renkon PCa (PCa member for bonding)
7 Upper PCa column (upper PCa member)
7a Main bars (rebars)
8 Sheath tube (through hole)
9 upper joint area (joint area)
10 grout outlet 11 lower supply outlet 12 grout outlet 13 upper supply outlet
Claims (1)
下端面から下方に複数の鉄筋を突出させて形成した上部ＰＣａ部材を、前記鉄筋を前記貫通孔内に挿通するとともに前記スリーブに挿入して前記接合用ＰＣａ部材の上に配置し、
前記スリーブ内と、前記下部ＰＣａ部材と前記接合用ＰＣａ部材の間の下方目地部と、前記貫通孔内と、前記上部ＰＣａ部材と前記接合用ＰＣａ部材の間の上方目地部とにグラウト材を注入して、前記下部ＰＣａ部材と前記接合用ＰＣａ部材と前記上部ＰＣａ部材を一体に接合する方法において、
前記下方目地部および前記上方目地部にグラウト材を注入する際に、グラウト材の吐出口を前記下方目地部および前記上方目地部のそれぞれ中央部に設けるようにし、
先に、前記下方目地部から前記グラウト材を注入して、前記貫通孔の上部まで注入し、
その後、前記上方目地部から前記グラウト材を注入して、前記貫通孔および前記上方目地部に前記グラウト材を充填させることを特徴とするＰＣａ部材の接合方法。 On the lower PCa member formed by integrally embedding a plurality of cylindrical sleeves in the upper end portion, a PCa member for bonding formed by providing a plurality of through holes that are opened from the upper end face to the lower end face and penetrated And
An upper PCa member formed by projecting a plurality of reinforcing bars downward from the lower end face is inserted into the through hole and inserted into the sleeve and disposed on the joining PCa member,
Grout is applied to the inside of the sleeve, the lower joint between the lower PCa member and the joining PCa member, the inside of the through hole, and the upper joint between the upper PCa member and the joining PCa member. In the method of injecting and joining integrally the lower PCa member, the joining PCa member and the upper PCa member,
When pouring grout material into the lower joint portion and the upper joint portion, a discharge port of the grout material is provided in the central portion of each of the lower joint portion and the upper joint portion .
First, the grout material is injected from the lower joint portion and injected up to the top of the through hole,
Thereafter, the grout material is injected from the upper joint portion, and the grout material is filled in the through hole and the upper joint portion .
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2015079996A JP6512433B2 (en) | 2015-04-09 | 2015-04-09 | Joining method of PCa member |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2015079996A JP6512433B2 (en) | 2015-04-09 | 2015-04-09 | Joining method of PCa member |
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|---|---|
| JP2016199901A JP2016199901A (en) | 2016-12-01 |
| JP6512433B2 true JP6512433B2 (en) | 2019-05-15 |
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| JP6485935B1 (en) | 2018-10-18 | 2019-03-20 | ベルフェイス株式会社 | Online communication review system, method, and computer program |
| CN112504840A (en) * | 2020-11-26 | 2021-03-16 | 上海建工二建集团有限公司 | Assembled type building sleeve grouting quality detection device and construction method thereof |
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| US5366672A (en) * | 1993-03-18 | 1994-11-22 | Erico International Corporation | Method of forming concrete structures with a grout splice sleeve which has a threaded connection to a reinforcing bar |
| JP2006144255A (en) * | 2004-11-16 | 2006-06-08 | Sumitomo Mitsui Construction Co Ltd | Grout injection method for beam-column connection structure of building |
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