JP2019015038A - Junction structure and junction method of precast plate - Google Patents

Junction structure and junction method of precast plate Download PDF

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JP2019015038A
JP2019015038A JP2017130844A JP2017130844A JP2019015038A JP 2019015038 A JP2019015038 A JP 2019015038A JP 2017130844 A JP2017130844 A JP 2017130844A JP 2017130844 A JP2017130844 A JP 2017130844A JP 2019015038 A JP2019015038 A JP 2019015038A
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precast
hole
plate
pca
fixing
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範之 勝山
Noriyuki Katsuyama
範之 勝山
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IHI Corp
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IHI Corp
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Priority to PCT/JP2018/023512 priority patent/WO2019009075A1/en
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    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04H—BUILDINGS OR LIKE STRUCTURES FOR PARTICULAR PURPOSES; SWIMMING OR SPLASH BATHS OR POOLS; MASTS; FENCING; TENTS OR CANOPIES, IN GENERAL
    • E04H7/00—Construction or assembling of bulk storage containers employing civil engineering techniques in situ or off the site
    • E04H7/02—Containers for fluids or gases; Supports therefor
    • E04H7/18—Containers for fluids or gases; Supports therefor mainly of concrete, e.g. reinforced concrete, or other stone-like material
    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04H—BUILDINGS OR LIKE STRUCTURES FOR PARTICULAR PURPOSES; SWIMMING OR SPLASH BATHS OR POOLS; MASTS; FENCING; TENTS OR CANOPIES, IN GENERAL
    • E04H7/00—Construction or assembling of bulk storage containers employing civil engineering techniques in situ or off the site
    • E04H7/02—Containers for fluids or gases; Supports therefor
    • E04H7/18—Containers for fluids or gases; Supports therefor mainly of concrete, e.g. reinforced concrete, or other stone-like material
    • E04H7/20—Prestressed constructions

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  • General Engineering & Computer Science (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Filling Or Discharging Of Gas Storage Vessels (AREA)

Abstract

To provide a technique capable of highly efficiently joining precast plates in a short time by a simple constitution, and capable of constructing a side wall of a tank in a short time.SOLUTION: A junction structure of precast plates forms a side wall of a tank by making end faces of the precast plates come into contact with each other to form a stacked state. A side face 1a of the adjacent precast plate 1 is provided with: a pair of fixation holes 4 with the end face 2 interposed therebetween; a connecting arm part extending over the pair of fixation holes 4; and a connector 5 provided with fixed parts fixed to the fixation holes 4 and provided at both end parts of the connecting arm part.SELECTED DRAWING: Figure 1

Description

本発明はプレキャスト板の接合構造及び接合方法に関するものである。   The present invention relates to a precast plate joining structure and joining method.

従来、プレキャスト板（以下ＰＣａ板という）の端面を相互に接合してタンクの側壁を構築する方法では、接合するＰＣａ板の端面の間に接合筋である鉄筋を配設し、鉄筋を配置した部分にコンクリート或いはモルタルを打設することにより一体に接合する方法(ウェットジョイント方法)が一般に行われてきた。ＰＣａ板間に鉄筋を配設する方法としては、ＰＣａ板に設けた配筋に鉄筋を溶接して配設する方法、又は、ＰＣａ板の配筋を端面から所要の長さで突出するように予めＰＣａ板を製作しておく方法が用いられていた。   Conventionally, in the method of constructing a tank side wall by mutually joining end faces of precast plates (hereinafter referred to as PCa plates), reinforcing bars as joining bars are arranged between the end faces of PCa plates to be joined, and the reinforcing bars are arranged. A method of joining together by placing concrete or mortar on the part (wet joint method) has been generally performed. As a method of arranging the reinforcing bars between the PCa plates, a method of arranging the reinforcing bars by welding them to the reinforcing bars provided on the PCa plates, or so that the reinforcing bars of the PCa plate protrude from the end face with a required length. A method of producing a PCa plate in advance was used.

しかし、ＰＣａ板の相互間に鉄筋を配設してコンクリート或いはモルタルを打設してＰＣａ板を接合するウェットジョイント方法は、鉄筋を溶接によって配設する多くの作業が必要であり、更に、コンクリート等を打設する作業の他、型枠の設置・取り外し作業が必要となり、作業に長時間を要する問題がある。又、配筋が端面から突出するように予め製作したＰＣａ板を接合する方法は、ＰＣａ板の製作が大変になる問題があり、更に、ＰＣａ板の端面から配筋が長く突出することでＰＣａ板が大型化し、取り扱いが大変になる問題がある。更に、この方法においても、ウェットジョイント方法のために配筋が突出した部分にコンクリート等を打設する作業の他、型枠の設置・取り外し作業が必要となり、作業に長時間を要する問題がある。   However, the wet joint method in which reinforcing bars are arranged between PCa plates and concrete or mortar is placed to join the PCa plates requires many operations to arrange the reinforcing bars by welding. In addition to the work of placing the etc., installation and removal work of the formwork is required, and there is a problem that the work takes a long time. In addition, the method of joining the PCa plate manufactured in advance so that the reinforcing bar protrudes from the end surface has a problem that the manufacturing of the PCa plate becomes difficult, and further, the reinforcing bar protrudes from the end surface of the PCa plate for a long time. There is a problem that the plate becomes large and the handling becomes difficult. Further, in this method, there is a problem that it takes a long time to install and remove the formwork in addition to the work of placing concrete or the like on the portion where the reinforcing bar protrudes due to the wet joint method. .

一方、ＰＣａ板を用いてタンクの側壁を構築する際には、筒形に積み上げたＰＣａ板の周方向に設けた貫通孔に緊張材を配置すると共に、ＰＣａ板の縦方向に設けた貫通孔に緊張材を配置する。そして、この緊張材を緊張させて周方向と縦方向から固縛することで隣接するＰＣａ板の端面を強く押し当てて当接させて側壁の強度を高めることが行われている。   On the other hand, when constructing the tank side wall using the PCa plate, the tension material is disposed in the through hole provided in the circumferential direction of the PCa plate stacked in a cylindrical shape, and the through hole provided in the vertical direction of the PCa plate. Place the tendon material on. And the tension | tensile_strength of a side wall is raised by making the tension | tensile_strength material tension | tensile_strengthening from the circumferential direction and the vertical direction, pressing the end surface of an adjacent PCa board firmly and making it contact.

このように、積み上げたＰＣａ板を緊張材の緊張によって固縛する方法によれば、側壁が高い強度を保持し、隣接するＰＣａ板の端面が相互に位置ずれるような問題を生じることはない。   As described above, according to the method of securing the stacked PCa plates by the tension of the tension material, there is no problem that the side walls maintain high strength and the end faces of the adjacent PCa plates are displaced from each other.

しかし、前記ＰＣａ板によって構築される側壁の内部に、天然ガス等の低温の液体を貯蔵する側ライナが備えられる低温タンク設備においては、万が一、側ライナから低温の液体が漏れた場合には、低温の液体が側壁に触れることによって側壁の特に下側部分が縮小するように変形することが考えられる。   However, in a cryogenic tank facility provided with a side liner for storing a low-temperature liquid such as natural gas inside the side wall constructed by the PCa plate, if a low-temperature liquid leaks from the side liner, It is conceivable that the low temperature liquid touches the side wall and deforms so that the lower side portion of the side wall is contracted.

ＰＣａ板が縮小するように変形した場合には、ＰＣａ板の端面の相互間に楔状の隙間(目開き)を生じる可能性がある。このようにＰＣａ板の端面の相互間に隙間が生じた場合には側壁の水密性の低下が予想されるため、前記隙間が生じないように各ＰＣａ板を相互に連結する構造を備えることが考えられる。   When the PCa plate is deformed so as to shrink, a wedge-shaped gap (opening) may be generated between the end faces of the PCa plate. In this way, when a gap is generated between the end faces of the PCa plates, the watertightness of the side walls is expected to be lowered. Therefore, a structure for connecting the PCa plates to each other so as not to generate the gap is provided. Conceivable.

隣接配置される各ＰＣａ板を相互に連結する構造を示す先行技術文献としては特許文献１がある。特許文献１では、相互に接合するＰＣａ板に、夫々の接合部側が開口する溝を形成し、該溝の接合部側とは反対側に、溝の幅より大きな幅と、溝の深さより深い深さを有する係合溝を形成する。更に、両端部に係合部を有する接合部材を、その係合部が係合溝内に位置するように溝内に亘って配置する。そして、溝内及び係合溝内、更にはＰＣａ板間に接着剤を充填し、この接着剤を硬化させてＰＣａ板を相互に接合している。   There is Patent Document 1 as a prior art document showing a structure for connecting adjacent PCa plates to each other. In Patent Document 1, grooves are formed on the PCa plates to be bonded to each other so that each bonding portion side is open, and on the side opposite to the bonding portion side, the groove is wider than the groove width and deeper than the groove depth. An engagement groove having a depth is formed. Furthermore, a joining member having engaging portions at both ends is disposed over the groove so that the engaging portions are located in the engaging groove. Then, an adhesive is filled in the groove, the engagement groove, and between the PCa plates, and the adhesive is cured to bond the PCa plates to each other.

特開２０１７−０６６８１１号公報JP 2017-066811 A

しかし、特許文献１においても、プレキャスト板(ＰＣａ板)に備えた溝内及び係合溝内、更にはプレキャスト板間に接着剤を充填して固化させるウェットジョイント方法のため、接着剤を充填する作業の他に、型枠の設置・取り外し作業が必要となり、作業に長時間を要する問題がある。   However, even in Patent Document 1, the adhesive is filled because of the wet joint method in which the adhesive is filled and solidified in the groove and the engagement groove provided in the precast plate (PCa plate) and between the precast plates. In addition to the work, there is a problem that it takes a long time to install and remove the formwork.

本発明は上記課題に鑑みてなしたもので、簡単な構成によりプレキャスト板を短時間で高能率に接合することができ、タンクの側壁を短期間で構築できる技術を提供することを目的とする。   The present invention has been made in view of the above problems, and an object of the present invention is to provide a technique capable of joining a precast plate with high efficiency in a short time with a simple structure and constructing a side wall of a tank in a short period of time. .

本発明は、プレキャスト板の端面を相互に当接させて積み上げることによりタンクの側壁を形成するプレキャスト板の接合構造であって、
隣接する前記プレキャスト板の側面に、前記端面を挟んで対に備えた固定穴と、
前記対の固定穴に亘って延びる連結アーム部と、該連結アーム部の両端部に備えて前記固定穴に固定される固定部を備えた連結具と
を有するプレキャスト板の接合構造、に係るものである。 The present invention is a precast plate joining structure that forms side walls of a tank by stacking the end surfaces of the precast plates against each other,
A fixing hole provided in a pair across the end surface on the side surface of the adjacent precast plate,
A precast plate joining structure having a connecting arm portion extending over the pair of fixing holes, and a connecting tool having fixing portions provided at both ends of the connecting arm portion and fixed to the fixing holes. It is.

上記プレキャスト板の接合構造において、前記連結具は、前記連結アーム部の両端部を９０°より大きい角度で対向するように曲げたフック部を有する鎹であってよい。   In the precast plate joining structure, the connecting tool may be a hook having a hook portion bent so that both ends of the connecting arm portion face each other at an angle larger than 90 °.

又、上記プレキャスト板の接合構造において、前記連結具は、連結アーム部の両端部にホールインアンカによる固定部を備えたアンカ装置であってよい。   Further, in the precast plate joining structure, the connecting tool may be an anchor device provided with fixing portions by hole-in anchors at both ends of the connecting arm portion.

又、上記プレキャスト板の接合構造において、隣接する前記プレキャスト板を周方向に貫通する周方向の貫通孔と、隣接する前記プレキャスト板を縦方向に貫通する縦方向の貫通孔と、前記周方向の貫通孔と縦方向の貫通孔に配置して前記プレキャスト板を周方向と縦方向から固縛する緊張材を有することができる。   Further, in the joining structure of the precast plates, a circumferential through hole penetrating the adjacent precast plate in the circumferential direction, a vertical through hole penetrating the adjacent precast plate in the vertical direction, and the circumferential direction It can have a tension material that is disposed in the through hole and the longitudinal through hole to secure the precast plate from the circumferential direction and the longitudinal direction.

本発明は、プレキャスト板の端面が相互に当接するように配置し、
隣接する前記プレキャスト板の側面において前記端面を挟むように対で形成した固定穴に、前記対の固定穴に亘って延びる連結アーム部の両端部に固定部を備えた連結具の前記固定部を打撃により挿入して固定し、連結具により連結した前記プレキャスト板を積み上げることでタンクの側壁を形成するプレキャスト板の接合方法、に係るものである。 The present invention is arranged so that the end faces of the precast plates are in contact with each other,
In the fixing hole formed in a pair so as to sandwich the end face on the side surface of the adjacent precast plate, the fixing part of the connecting tool provided with fixing parts at both ends of the connecting arm part extending over the pair of fixing holes is provided. The present invention relates to a method for joining precast plates, in which the side walls of the tank are formed by stacking the precast plates inserted and fixed by striking and connected by a connector.

上記プレキャスト板の接合方法において、隣接する前記プレキャスト板を周方向に貫通する貫通孔に緊張材を配置すると共に、隣接する前記プレキャスト板を縦方向に貫通する貫通孔に緊張材を配置し、前記緊張材を緊張させて前記プレキャスト板を周方向と縦方向から固縛することができる。   In the precast plate joining method, the tension material is disposed in the through hole penetrating the adjacent precast plate in the circumferential direction, and the tension material is disposed in the through hole penetrating the adjacent precast plate in the vertical direction, The precast plate can be secured from the circumferential direction and the longitudinal direction by tensioning the tension material.

本発明によれば、簡単な構成によりプレキャスト板を短時間で高能率に接合することができ、よってタンクの側壁を短期間で構築することができる。   According to the present invention, it is possible to join the precast plates with high efficiency in a short time with a simple configuration, and thus the side wall of the tank can be constructed in a short period of time.

プレキャスト板を積み上げてタンクの側壁を構築する状態を内側から見た斜視図である。It is the perspective view which looked at the state which piles up a precast board and constructs the side wall of a tank from the inside. １つのプレキャスト板を示す正面図である。It is a front view which shows one precast board. (Ａ)はプレキャスト板を相互に連結する本発明の接合構造の第一の実施例を示す断面図、(Ｂ)は(Ａ)の詳細を示す断面図である。(A) is sectional drawing which shows the 1st Example of the joining structure of this invention which connects a precast board mutually, (B) is sectional drawing which shows the detail of (A). (Ａ)は本発明の接合構造の第二の実施例を示す固定穴の形状を表わした断面図、(Ｂ)は連結具であるアンカ装置を構成する鎹部材の説明図、(Ｃ)はアンカ装置の固定部を固定穴に挿入した状態を示す断面図、(Ｄ)はアンカ装置の打撃により固定部を固定穴に固定した状態を示す断面図である。(A) is sectional drawing showing the shape of the fixing hole which shows the 2nd Example of the joining structure of this invention, (B) is explanatory drawing of the collar member which comprises the anchor apparatus which is a connector, (C) is Sectional drawing which shows the state which inserted the fixing | fixed part of the anchor apparatus in the fixing hole, (D) is sectional drawing which shows the state which fixed the fixing | fixed part to the fixing hole by the impact of the anchor apparatus. 図４に示す接合構造の変形例を示す断面図である。It is sectional drawing which shows the modification of the joining structure shown in FIG. (Ａ)は図４に示す第二の実施例に類似する接合構造の固定穴の形状を表わした断面図、(Ｂ)は連結具であるプレート式のアンカ装置の固定部を固定穴に挿入した状態を示す断面図、(Ｃ)はプレート式のアンカ装置の打撃により固定部を固定穴に固定した状態を示す断面図である。(A) is a cross-sectional view showing the shape of a fixing hole having a joint structure similar to that of the second embodiment shown in FIG. 4, and (B) is an illustration of inserting a fixing portion of a plate type anchor device as a connecting tool into the fixing hole Sectional drawing which shows the state which carried out, (C) is sectional drawing which shows the state which fixed the fixing | fixed part to the fixing hole by the hit | damage of the plate type anchor device. プレキャスト板を積み上げて構築したタンクの側壁を緊張材により固縛する状態を示す側面図である。It is a side view which shows the state which ties up the side wall of the tank constructed by stacking the precast board with a tension material.

以下、本発明の実施の形態を図示例と共に説明する。   Hereinafter, embodiments of the present invention will be described with reference to the drawings.

図１はプレキャスト板(以下、ＰＣａ板という）１を積み上げてタンクを構築する状態を内側から見た斜視図である。図２は１つのＰＣａ板１の正面図である。   FIG. 1 is a perspective view of a state in which a precast plate (hereinafter referred to as a PCa plate) 1 is stacked to construct a tank as viewed from the inside. FIG. 2 is a front view of one PCa plate 1.

図１、図２に示すＰＣａ板１は四辺の端面２をもつ矩形の板形状を有しており、且つこのＰＣａ板１はタンクの側壁を形成するために湾曲した形状を有している。ＰＣａ板１の内部にはプレストレスを付与する多数の図示しない配筋が設けられており、更に、ＰＣａ板１には筒状に積み上げたＰＣａ板１に周方向と縦方向から緊張材を通して緊張により固縛するための貫通孔３が設けられている。   The PCa plate 1 shown in FIGS. 1 and 2 has a rectangular plate shape having end faces 2 on four sides, and the PCa plate 1 has a curved shape to form a side wall of the tank. A large number of reinforcing bars (not shown) for applying prestress are provided inside the PCa plate 1. Further, the PCa plate 1 is tensioned through a tension material from the circumferential direction and the vertical direction to the PCa plate 1 stacked in a cylindrical shape. A through-hole 3 is provided for securing.

ＰＣａ板１の側面(図１では内側の側面１ａ)における端面２に近い位置には固定穴４を設けている。この固定穴４は隣接するＰＣａ板１との間で端面２を挟むように設けてあり、更にこの固定穴４は、端面２の長手方向へ所定の間隔を有して複数の対で設けている。この固定穴４はＰＣａ板１に予め設けられている配筋と同等の間隔を有して設けることができる。   A fixing hole 4 is provided at a position close to the end surface 2 on the side surface of the PCa plate 1 (inner side surface 1a in FIG. 1). The fixing hole 4 is provided so as to sandwich the end face 2 between the adjacent PCa plates 1, and the fixing hole 4 is provided in a plurality of pairs with a predetermined interval in the longitudinal direction of the end face 2. Yes. The fixing holes 4 can be provided with an interval equivalent to the reinforcing bars previously provided in the PCa plate 1.

図３(Ａ)、(Ｂ)は、ＰＣａ板１の固定穴４に挿入して隣接するＰＣａ板１を相互に連結する本発明の接合構造の第一の実施例を示す断面図である。図３の接合構造は、隣接するＰＣａ板１に対で設けた固定穴４に打撃により挿入して固定するようにした連結具５を有する。   FIGS. 3A and 3B are cross-sectional views showing a first embodiment of the joining structure of the present invention which is inserted into the fixing hole 4 of the PCa plate 1 and connects the adjacent PCa plates 1 to each other. The joining structure of FIG. 3 has a connector 5 that is inserted into a fixing hole 4 provided in a pair in the adjacent PCa plate 1 and fixed by striking.

この連結具５は、隣接するＰＣａ板１に対で設けた固定穴４に亘って延びる連結アーム部６と、該連結アーム部６の両端部に備えて前記固定穴４に固定される固定部７を有している。図３(Ａ)、(Ｂ)の連結具５は、連結アーム部６の両端部を９０°より大きい角度で対向するように曲げた爪状のフック部７ａを一体に備えた鎹８の場合を示している。   This connecting tool 5 includes a connecting arm portion 6 extending over a fixing hole 4 provided in a pair on the adjacent PCa plate 1, and a fixing portion provided at both ends of the connecting arm portion 6 and fixed to the fixing hole 4. 7. 3 (A) and 3 (B) is a hook 8 integrally provided with a hook-like hook portion 7a bent so that both ends of the connecting arm portion 6 face each other at an angle larger than 90 °. Is shown.

図３(Ａ)、(Ｂ)に示す鎹８の連結アーム部６の両端部に９０°より大きい角度で対向するように曲げたフック部７ａは、フック部７ａの基端部に対して先端部が相互に近づくように９０°に対して１°前後の小さい傾き角αで更に曲げた形状を有している。又、ＰＣａ板１に設けられる固定穴４は、前記フック部７ａを収容できる大きさを有し、且つフック部７ａの傾き角αと同じ角度に傾斜した傾斜穴４ａとなっている。更に、傾斜穴４ａに対して鎹８のフック部７ａを打撃により挿入する操作を容易にするために、フック部７ａの対向する先端部の内面には、傾斜穴４ａの角部９を乗り越えるための切欠き面１０が形成してあり、又、フック部７ａの先端部の外面には傾斜穴４ａとの衝突を避けるための切欠き面１１が形成してある。尚、フック部７ａと傾斜穴４ａの傾き角αは、鎹８のフック部７ａを傾斜穴４ａに打撃によって挿入できるように予め選定した角度で形成することができる。   3A and 3B, the hook portion 7a bent so as to face both ends of the connecting arm portion 6 of the flange 8 shown in FIGS. 3A and 3B at an angle larger than 90 ° is distal to the proximal end portion of the hook portion 7a. It has a shape further bent at a small inclination angle α of about 1 ° with respect to 90 ° so that the parts approach each other. The fixing hole 4 provided in the PCa plate 1 is an inclined hole 4a having a size that can accommodate the hook portion 7a and inclined at the same angle as the inclination angle α of the hook portion 7a. Further, in order to facilitate the operation of inserting the hook portion 7a of the flange 8 into the inclined hole 4a by striking, the inner surface of the opposed tip portion of the hook portion 7a is moved over the corner portion 9 of the inclined hole 4a. A notch surface 10 is formed, and a notch surface 11 for avoiding a collision with the inclined hole 4a is formed on the outer surface of the tip portion of the hook portion 7a. The inclination angle α between the hook portion 7a and the inclined hole 4a can be formed at an angle selected in advance so that the hook portion 7a of the flange 8 can be inserted into the inclined hole 4a by striking.

尚、上記実施例では、ＰＣａ板１の内側の側面１ａに固定穴４を設けることで、鎹８による連結具５によって隣接するＰＣａ板１を相互に連結する場合について説明したが、図３に示すＰＣａ板１の外側の側面１ｂに固定穴４を設けて連結具５により連結してもよく、又、内側の側面１ａと外側の側面１ｂに固定穴４を設けてＰＣａ板１の内側と外側の両側で連結具５により連結してもよい。   In the above embodiment, a case has been described in which the fixing holes 4 are provided in the side surface 1a on the inner side of the PCa plate 1 so that the adjacent PCa plates 1 are connected to each other by the connecting tool 5 by the flange 8. FIG. A fixing hole 4 may be provided on the outer side surface 1b of the PCa plate 1 to be shown and connected by a connector 5, or the fixing hole 4 may be provided on the inner side surface 1a and the outer side surface 1b to You may connect with the connector 5 by the both sides of an outer side.

又、図３に示す如くＰＣａ板１の端面２には、隣接するＰＣａ板１との間で相互に係合する凸条１２と凹溝１３を設けることができる。このようにＰＣａ板１の端面２に相互に係合する凸条１２と凹溝１３を設けると、隣接するＰＣａ板１の位置決めが容易になり、更に、ＰＣａ板１によりタンクの側壁を形成した際にタンクの水密性を高めることができる。尚、端面２に凸条１２と凹溝１３を設けることに代えて、相互に係合できる段部を設けてもよい。   Further, as shown in FIG. 3, the end face 2 of the PCa plate 1 can be provided with a ridge 12 and a groove 13 that engage with each other with the adjacent PCa plate 1. As described above, when the protrusions 12 and the grooves 13 that engage with each other on the end surface 2 of the PCa plate 1 are provided, the positioning of the adjacent PCa plate 1 is facilitated, and the tank side wall is formed by the PCa plate 1. In particular, the water tightness of the tank can be increased. Instead of providing the ridges 12 and the grooves 13 on the end surface 2, stepped portions that can be engaged with each other may be provided.

従って、図３に示す接合構造の第一の実施例では、図３(Ｂ)に示すように隣接するＰＣａ板１の側面に設けた傾斜穴４ａに鎹８のフック部７ａをセットし、鎹８に打撃Ｓを加えることによりフック部７ａを傾斜穴４ａに挿入する。このとき、鎹８のフック部７ａは、フック部７ａの基端部に対して先端部が相互に近づくように９０°に対して１°前後の小さい傾き角αとなっているため、鎹８はＰＣａ板１を相互に引きつけて端面２を密着させた状態に当接させて隣接するＰＣａ板１を確実に連結する。更に、ここで、密着とはＰＣａ板１の相互間から液漏れしない程度に当接された状態を言う。   Therefore, in the first embodiment of the joining structure shown in FIG. 3, the hook portion 7a of the flange 8 is set in the inclined hole 4a provided on the side surface of the adjacent PCa plate 1 as shown in FIG. By applying the hit S to 8, the hook portion 7a is inserted into the inclined hole 4a. At this time, the hook portion 7a of the hook 8 has a small inclination angle α of about 1 ° with respect to 90 ° so that the distal ends thereof are close to the base end portion of the hook portion 7a. The PCa plates 1 are attracted to each other and brought into contact with the end surfaces 2 in close contact with each other to securely connect the adjacent PCa plates 1. Further, here, the close contact refers to a state where the PCa plates 1 are in contact with each other so as not to leak liquid.

鎹８による連結具５は、ＰＣａ板１の相互をドライジョイント方法で連結できるため、従来に比して作業が簡略になり、ＰＣａ板１の接合作業を高能率に行うことができる。   Since the connecting tool 5 by the scissors 8 can connect the PCa plates 1 to each other by the dry joint method, the operation is simplified as compared with the conventional case, and the connecting operation of the PCa plates 1 can be performed with high efficiency.

図４(Ａ)、(Ｂ) 、(Ｃ)、(Ｄ)は、本発明の接合構造の第二の実施例を示す断面図である。この接合構造は、図４(Ａ)に示すように隣接するＰＣａ板１に対で設ける固定穴４は、ＰＣａ板１の端面２と平行に設けた平行穴４ｂとしている。又、平行穴４ｂに打撃により挿入して固定する連結具５は、図４(Ｂ) 、(Ｃ)に示すように、連結アーム部６の両端部を９０°に曲げて平行に対向したフック部７ａの先端部にねじ１４を切った鎹部材１５を有する。そして、この鎹部材１５のねじ１４に、ホールインアンカ１６をねじ込みによって取り付けたアンカ装置１７の場合を示している。   4A, 4B, 4C and 4D are cross-sectional views showing a second embodiment of the joint structure of the present invention. In this joining structure, as shown in FIG. 4A, the fixing holes 4 provided in pairs in the adjacent PCa plates 1 are parallel holes 4b provided in parallel with the end surface 2 of the PCa plate 1. Further, as shown in FIGS. 4 (B) and 4 (C), the connector 5 to be inserted and fixed in the parallel hole 4b by hitting is a hook opposed to each other in parallel by bending both end portions of the connecting arm portion 6 to 90 °. It has the collar member 15 which cut | disconnected the screw 14 at the front-end | tip part of the part 7a. And the case of the anchor apparatus 17 which attached the hole-in anchor 16 to the screw 14 of this collar member 15 by screwing is shown.

従って、図４の接合構造では、図４(Ａ)に示すＰＣａ板１に設けた平行穴４ｂに、図４(Ｃ)のようにアンカ装置１７のホールインアンカ１６を挿入してセットする。続いて、図４(Ｄ)に示すようにアンカ装置１７に打撃Ｓを加えることによりホールインアンカ１６の先端は拡張される。これによりホールインアンカ１６は平行穴４ｂに確実に固定されるので、隣接するＰＣａ板１はアンカ装置１７によって確実に連結される。   Therefore, in the joining structure of FIG. 4, the hole-in anchor 16 of the anchor device 17 is inserted and set in the parallel hole 4b provided in the PCa plate 1 shown in FIG. 4 (A) as shown in FIG. 4 (C). Subsequently, as shown in FIG. 4D, the tip of the hole-in anchor 16 is expanded by applying a hit S to the anchor device 17. As a result, the hole-in anchor 16 is securely fixed in the parallel hole 4 b, so that the adjacent PCa plates 1 are reliably connected by the anchor device 17.

アンカ装置１７による連結具５は、ＰＣａ板１の相互をドライジョイント方法で連結できるため、従来に比して作業が簡略になり、ＰＣａ板１の接合作業を高能率に行うことができる。   Since the connector 5 by the anchor device 17 can connect the PCa plates 1 to each other by a dry joint method, the operation is simplified as compared with the conventional case, and the PCa plate 1 can be joined with high efficiency.

図５は図４に示す接合構造の変形例を示すものであり、この変形例では図４(Ｂ)と同様の形状を有する鎹部材１５のフック部７ａに、ホールインアンカ１６を一体に固定した場合を示している。図５の変形例の場合も、図４の実施例と同様に作用することができる。   FIG. 5 shows a modified example of the joining structure shown in FIG. 4. In this modified example, the hole-in anchor 16 is fixed integrally to the hook portion 7a of the flange member 15 having the same shape as FIG. 4 (B). Shows the case. The modification of FIG. 5 can also operate in the same manner as the embodiment of FIG.

図６(Ａ)、(Ｂ) 、(Ｃ)は、図４の第二の実施例と類似する接合構造を示す断面図である。この接合構造は、図６(Ａ)に示すように隣接するＰＣａ板１に対で設けた平行穴４ｂに、ホールインアンカ２０をねじ込むためのねじ１８を設けている。又、図６(Ｂ) 、(Ｃ)に示すように、平行穴４ｂに打撃により挿入して固定する連結具５は、連結アーム部６を形成するプレート１９の両端部にホールインアンカ２０を固定したプレート式のアンカ装置２１の場合を示している。このプレート式のアンカ装置２１には前記平行穴４ｂのねじ１８に螺合するねじ２２が設けられている。２３はホールインアンカ２０に備えられてホールインアンカ２０の先端を拡張させる打撃ロッドである。   6A, 6B and 6C are cross-sectional views showing a joining structure similar to the second embodiment of FIG. In this joining structure, as shown in FIG. 6A, a screw 18 for screwing the hole-in anchor 20 is provided in a parallel hole 4b provided in a pair in the adjacent PCa plate 1. Further, as shown in FIGS. 6 (B) and 6 (C), the connecting tool 5 to be inserted and fixed in the parallel hole 4b by hitting is provided with hole-in anchors 20 at both ends of the plate 19 forming the connecting arm portion 6. The case of the fixed plate type anchor device 21 is shown. The plate type anchor device 21 is provided with a screw 22 that is screwed into the screw 18 of the parallel hole 4b. Reference numeral 23 denotes a striking rod which is provided in the hole-in anchor 20 and expands the tip of the hole-in anchor 20.

従って、図６の接合構造では、図６(Ａ)に示すねじ１８を備えた平行穴４ｂに、図６(Ｂ)のようにプレート式のアンカ装置２１に備えたホールインアンカ２０のねじ２２を螺合させて挿入する。続いて、図６(Ｃ)に示すようにホールインアンカ２０の打撃ロッド２３に打撃Ｓを加えると、ホールインアンカ２０の先端は拡張される。これによりホールインアンカ２０は平行穴４ｂに確実に固定されるので、隣接するＰＣａ板１はプレート式のアンカ装置２１によって確実に連結される。   Therefore, in the joint structure of FIG. 6, the screw 22 of the hole-in anchor 20 provided in the plate type anchor device 21 as shown in FIG. 6B is inserted into the parallel hole 4b provided with the screw 18 shown in FIG. Screw in and insert. Subsequently, when a hit S is applied to the hit rod 23 of the hole-in anchor 20 as shown in FIG. 6C, the tip of the hole-in anchor 20 is expanded. As a result, the hole-in anchor 20 is securely fixed to the parallel hole 4 b, so that the adjacent PCa plates 1 are reliably connected by the plate-type anchor device 21.

プレート式のアンカ装置２１による連結具５は、ＰＣａ板１の相互をドライジョイント方法で連結できるため、従来に比して作業が簡略になり、ＰＣａ板１の接合作業を高能率に行うことができる。   Since the connector 5 by the plate type anchor device 21 can connect the PCa plates 1 with each other by a dry joint method, the work is simplified as compared with the conventional case, and the joining work of the PCa plates 1 can be performed with high efficiency. it can.

次に、ＰＣａ板１を積み上げてタンクの側壁２４を構築する際の作業手順を説明する。   Next, the work procedure when building up the side wall 24 of the tank by stacking the PCa plates 1 will be described.

ＰＣａ板１は、図１に示すように端面２が相互に当接するようにして設置する。そして、隣接するＰＣａ板１の側面(図１では内側の側面１ａ)において端面２を挟むように対で形成した固定穴４に、対の固定穴４に亘って延びる連結アーム部６の両端部に固定部７を備えた連結具５の固定部７を打撃により挿入して固定する。すると、隣接するＰＣａ板１は連結具５によって相互に強固に連結される。   The PCa plate 1 is installed so that the end surfaces 2 are in contact with each other as shown in FIG. Then, both end portions of the connecting arm portion 6 extending across the pair of fixing holes 4 in the fixing holes 4 formed in pairs so as to sandwich the end surface 2 on the side surface (inner side surface 1a in FIG. 1) of the adjacent PCa plate 1 The fixing part 7 of the connector 5 having the fixing part 7 is inserted and fixed by striking. Then, the adjacent PCa plates 1 are firmly connected to each other by the connector 5.

このように、既に設置されたＰＣａ板１に対して次のＰＣａ板１を設置して連結具５により連結することで積み上げてタンクの側壁２４を形成するので、ＰＣａ板１により高い構築速度で側壁２４を構築することができ、更に、連結具５によって連結するＰＣａ板１は安定する効果がある。   In this way, the side wall 24 of the tank is formed by installing the next PCa plate 1 with respect to the already installed PCa plate 1 and connecting them with the connector 5 to form the side wall 24 of the tank. The side wall 24 can be constructed, and the PCa plate 1 connected by the connector 5 has an effect of stabilizing.

図７に示すようにＰＣａ板１が積み上げられたタンクの側壁２４は、ＰＣａ板１の周方向に設けた図２の貫通孔３に緊張材２５を貫通させて配置すると共に、ＰＣａ板１の縦方向に設けた貫通孔３に緊張材２５を貫通させて配置する。そして、緊張材２５を緊張させることにより各ＰＣａ板１を周方向と縦方向から固縛する。ここで、上記においては、積み上げた側壁２４のＰＣａ板１を周方向と縦方向から緊張材２５により固縛する場合について説明したが、側壁２４を斜めに交差するよう網状に配置した緊張材２５によって固縛するようにしてもよい。   As shown in FIG. 7, the side wall 24 of the tank on which the PCa plates 1 are stacked is disposed by penetrating the tension material 25 through the through holes 3 of FIG. 2 provided in the circumferential direction of the PCa plate 1, and The tension material 25 is disposed through the through hole 3 provided in the vertical direction. Then, each PCa plate 1 is secured from the circumferential direction and the longitudinal direction by tensioning the tendon 25. Here, in the above description, the case where the PCa plates 1 of the stacked side walls 24 are secured by the tension members 25 from the circumferential direction and the longitudinal direction has been described. However, the tension members 25 arranged in a net shape so as to cross the side walls 24 obliquely. May be tied up by

従って、側壁２４を形成するように積み上げた各ＰＣａ板１は、連結具５によって相互に連結され、更に、各ＰＣａ板１は緊張材２５によって固縛されるので、各ＰＣａ板１の相互の接合強度は高められる。   Accordingly, the PCa plates 1 stacked so as to form the side walls 24 are connected to each other by the connector 5, and each PCa plate 1 is secured by the tension member 25. Bonding strength is increased.

上記したように、本発明では、ＰＣａ板１を積み上げてタンクの側壁２４を形成する際に、隣接するＰＣａ板１の側面１ａに、端面２を挟んで対に備えた固定穴４を備え、対の固定穴４に亘って延びる連結アーム部６と、該連結アーム部６の両端部に備えて固定穴４に固定される固定部を有する連結具５を備えている。従って、簡単な構成の連結具５によってドライジョイント方法により隣接するＰＣａ板１を相互に連結することができる。更に、コンクリート等の充填作業が不要になるため、作業性が向上し短時間でＰＣａ板１を接合することができる。従って、ＰＣａ板１によりタンクの側壁２４を短期間に高能率で構築することができる。   As described above, in the present invention, when the PCa plate 1 is stacked to form the side wall 24 of the tank, the side surface 1a of the adjacent PCa plate 1 is provided with the fixing holes 4 provided in pairs with the end surface 2 interposed therebetween, A connecting arm portion 6 extending over the pair of fixing holes 4 and a connecting tool 5 having fixing portions provided at both ends of the connecting arm portion 6 and fixed to the fixing holes 4 are provided. Therefore, the adjacent PCa plates 1 can be connected to each other by the dry joint method using the connector 5 having a simple configuration. Furthermore, since filling work such as concrete is not necessary, workability is improved and the PCa plate 1 can be joined in a short time. Therefore, the side wall 24 of the tank can be constructed with high efficiency in a short time by the PCa plate 1.

連結具５が、連結アーム部６の両端部を９０°より大きい角度で対向するように曲げた爪状のフック部７ａを有する鎹８である場合には、接合構造を著しく簡略化することができる。   When the connecting tool 5 is the ridge 8 having the hook-like hook portion 7a bent so that both ends of the connecting arm portion 6 face each other at an angle larger than 90 °, the joining structure can be greatly simplified. it can.

連結具５が、連結アーム部６の両端部にホールインアンカ１６、２０による固定部７を備えたアンカ装置１７又はプレート式のアンカ装置２１である場合には、接合構造が簡単である上に高い連結強度が得られる。   When the connector 5 is the anchor device 17 or the plate type anchor device 21 provided with the fixing portions 7 by the hole-in anchors 16 and 20 at both ends of the connecting arm portion 6, the joining structure is simple. High connection strength can be obtained.

図７に示すようにＰＣａ板１が積み上げられたタンクの側壁２４は、ＰＣａ板１の周方向の貫通孔３に貫通させた緊張材２５、及び、ＰＣａ板１の縦方向の貫通孔３に貫通させた緊張材２５を緊張させて各ＰＣａ板１を周方向と縦方向から固縛する。すると、緊張材２５の固縛によりＰＣａ板１の端面２は相互に密着した状態に当接される。   As shown in FIG. 7, the side wall 24 of the tank on which the PCa plates 1 are stacked is connected to the tension member 25 penetrated through the circumferential through holes 3 of the PCa plate 1 and the vertical through holes 3 of the PCa plate 1. Each of the PCa plates 1 is secured from the circumferential direction and the longitudinal direction by tensioning the penetrating tension material 25. Then, the end surfaces 2 of the PCa plate 1 are brought into contact with each other due to the tightness of the tension members 25.

設置されたＰＣａ板１に対して次のＰＣａ板１を設置して連結具５により連結することで積み上げてタンクの側壁２４を形成するので、ＰＣａ板１により高い構築速度で側壁２４を構築することができる。   Since the side wall 24 of the tank is formed by installing the next PCa plate 1 with respect to the installed PCa plate 1 and connecting them with the connector 5 to form the side wall 24 of the tank, the side wall 24 is constructed with the PCa plate 1 at a high construction speed. be able to.

ＰＣａ板１を積み上げたタンクの側壁２４を、緊張材２５の緊張により周方向と縦方向から固縛すると、各ＰＣａ板１が連結具５によって相互に連結されたことと、緊張材２５の固縛とによって、各ＰＣａ板１は相互に高い強度で接合される。   When the side wall 24 of the tank on which the PCa plates 1 are stacked is secured from the circumferential direction and the longitudinal direction by the tension of the tension members 25, the PCa plates 1 are connected to each other by the connector 5, and the tension members 25 are fixed. Due to the binding, the PCa plates 1 are joined to each other with high strength.

尚、本発明のプレキャスト板の接合構造及び接合方法は、上述の実施例にのみ限定されるものではなく、本発明の要旨を逸脱しない範囲内において種々変更を加え得ることは勿論である。   In addition, the joining structure and joining method of the precast board of this invention are not limited only to the above-mentioned Example, Of course, various changes can be added within the range which does not deviate from the summary of this invention.

１ プレキャスト板(ＰＣａ板)
１ａ 内側の側面
１ｂ 外側の側面
２ 端面
３ 貫通孔
４ 固定穴
５ 連結具
６ 連結アーム部
７ 固定部
７ａ フック部
８ 鎹
１６ ホールインアンカ
１７ アンカ装置
１９ プレート
２０ ホールインアンカ
２１ プレート式のアンカ装置
２４ 側壁
２５ 緊張材 1 Precast board (PCa board)
DESCRIPTION OF SYMBOLS 1a Inner side surface 1b Outer side surface 2 End surface 3 Through hole 4 Fixing hole 5 Connecting tool 6 Connecting arm part 7 Fixing part 7a Hook part 8 鎹 16 Hole in anchor 17 Anchor device 19 Plate 20 Hole in anchor 21 Plate type anchor device 24 Side wall 25 Tension material

Claims (6)

プレキャスト板の端面を相互に当接させて積み上げることによりタンクの側壁を形成するプレキャスト板の接合構造であって、
隣接する前記プレキャスト板の側面に、前記端面を挟んで対に備えた固定穴と、
前記対の固定穴に亘って延びる連結アーム部と、該連結アーム部の両端部に備えて前記固定穴に固定される固定部を備えた連結具と
を有するプレキャスト板の接合構造。 A precast plate joining structure that forms side walls of the tank by stacking the end faces of the precast plate against each other,
A fixing hole provided in a pair across the end surface on the side surface of the adjacent precast plate,
A precast plate joining structure comprising: a connecting arm portion extending over the pair of fixing holes; and a connecting tool having fixing portions provided at both ends of the connecting arm portion and fixed to the fixing holes. 前記連結具は、前記連結アーム部の両端部を９０°より大きい角度で対向するように曲げたフック部を有する鎹である請求項１に記載のプレキャスト板の接合構造。   2. The precast plate joining structure according to claim 1, wherein the coupling tool is a hook having bent hook portions that are opposite to each other at an angle larger than 90 °. 前記連結具は、連結アーム部の両端部にホールインアンカによる固定部を備えたアンカ装置である請求項１に記載のプレキャスト板の接合構造。   2. The precast plate joining structure according to claim 1, wherein the connector is an anchor device provided with fixing portions by hole-in anchors at both ends of a connecting arm portion. 隣接する前記プレキャスト板を周方向に貫通する周方向の貫通孔と、隣接する前記プレキャスト板を縦方向に貫通する縦方向の貫通孔と、前記周方向の貫通孔と縦方向の貫通孔に配置して前記プレキャスト板を周方向と縦方向から固縛する緊張材を有する請求項１〜３のいずれか１項に記載のプレキャスト板の接合構造。   Arranged in a circumferential through hole that penetrates the adjacent precast plate in the circumferential direction, a longitudinal through hole that penetrates the adjacent precast plate in the longitudinal direction, and a circumferential through hole and a longitudinal through hole And the joining structure of the precast board of any one of Claims 1-3 which has a tension material which ties up the said precast board from the circumferential direction and the vertical direction. プレキャスト板の端面が相互に当接するように配置し、
隣接する前記プレキャスト板の側面において前記端面を挟むように対で形成した固定穴に、前記対の固定穴に亘って延びる連結アーム部の両端部に固定部を備えた連結具の前記固定部を打撃により挿入して固定し、連結具により連結した前記プレキャスト板を積み上げることでタンクの側壁を形成するプレキャスト板の接合方法。 Place the end faces of the precast plates so that they touch each other,
In the fixing hole formed in a pair so as to sandwich the end face on the side surface of the adjacent precast plate, the fixing part of the connecting tool provided with fixing parts at both ends of the connecting arm part extending over the pair of fixing holes is provided. A method for joining precast plates, wherein the side walls of the tank are formed by stacking the precast plates inserted and fixed by striking and connected by a connector. 隣接する前記プレキャスト板を周方向に貫通する貫通孔に緊張材を配置すると共に、隣接する前記プレキャスト板を縦方向に貫通する貫通孔に緊張材を配置し、前記緊張材を緊張させて前記プレキャスト板を周方向と縦方向から固縛する請求項５に記載のプレキャスト板の接合方法。   A tension material is disposed in a through-hole penetrating the adjacent precast plate in the circumferential direction, a tension material is disposed in a through-hole penetrating the adjacent precast plate in the vertical direction, the tension material is tensioned, and the precast The joining method of the precast board of Claim 5 which fixes a board from the circumferential direction and the vertical direction.
JP2017130844A 2017-07-04 2017-07-04 Junction structure and junction method of precast plate Pending JP2019015038A (en)

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JPS6181979A (en) * 1984-07-31 1986-04-25 日本プレスコンクリート株式会社 Precast prestressed concrete tank and execution method thereof
JPH0740805U (en) * 1993-12-28 1995-07-21 テイヒュー株式会社 Precast concrete formwork
JP3842581B2 (en) * 2001-04-17 2006-11-08 株式会社ピーエス三菱 Construction method of cylindrical PC container
JP5433555B2 (en) * 2010-10-29 2014-03-05 羽田コンクリート工業株式会社 Connection structure of concrete member connector and concrete member
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