JPH0366461B2 - - Google Patents
Info
- Publication number
- JPH0366461B2 JPH0366461B2 JP9637188A JP9637188A JPH0366461B2 JP H0366461 B2 JPH0366461 B2 JP H0366461B2 JP 9637188 A JP9637188 A JP 9637188A JP 9637188 A JP9637188 A JP 9637188A JP H0366461 B2 JPH0366461 B2 JP H0366461B2
- Authority
- JP
- Japan
- Prior art keywords
- base plate
- foundation
- plate
- laid
- steel
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired
Links
Landscapes
- Sewage (AREA)
Description
【発明の詳細な説明】
［産業上の利用分野］
本発明は、ボツクスカルバート等のコンクリー
トブロツクを連結して、下水道、農業用水路、地
下道、共同溝等を構築する場合に好適に利用でき
る基礎板に関するものである。[Detailed Description of the Invention] [Industrial Application Field] The present invention provides a foundation plate that can be suitably used when constructing sewers, agricultural waterways, underground passages, public ditches, etc. by connecting concrete blocks such as box culverts. It is related to.
［従来の技術］
ボツクスカルバート等の筐形のコンクリートブ
ロツクを複数個連結して、下水道や共同溝等を構
築する場合には、地盤に形成した掘削穴の底に基
礎栗石を敷設し、その基礎栗石上に空練モルタル
や基礎コンクリート等を打設するのが通例であ
る。そして、この空練モルタルの上にコンクリー
トブロツクを所定位置に載置し、隣接するコンク
リートブロツク同士を連結金具等を用いて緊締連
結するようにしている。[Conventional technology] When constructing a sewer or a public ditch by connecting multiple concrete blocks in the shape of a box such as a box culvert, a foundation stone is laid at the bottom of an excavation hole formed in the ground, and the foundation is It is customary to pour dry mortar, foundation concrete, etc. onto the chestnut stone. Concrete blocks are placed on top of this dry mortar at predetermined positions, and adjacent concrete blocks are tightly connected using connecting fittings or the like.
［発明が解決しようとする課題］
ところが、空練モルタルは、コンクリートブロ
ツクの位置調節などのために比較的肉薄に打設す
るのが普通である。そのため、地盤の軟弱な箇
所、あるいは湧き水などの浸出によつて地盤が軟
弱化した箇所では、基礎部分が緩んでしまう場合
がある。さらに、コンクリートブロツク上を車道
等に利用している場合には、基礎上に加わる荷重
が強大となるため、上述の不具合と相俟つてコン
クリートブロツクが不同沈下してしまう例があ
る。[Problems to be Solved by the Invention] However, dry mortar is usually cast relatively thinly for purposes such as adjusting the position of concrete blocks. Therefore, in areas where the ground is soft or where the ground has become soft due to seepage of spring water, the foundation may become loose. Furthermore, when concrete blocks are used as roadways, etc., the load applied to the foundations becomes so great that, combined with the above-mentioned problems, there are cases where the concrete blocks settle unevenly.
また、基礎コンクリートを現場打ちすると、現
場での繁雑な作業に加えて、養生期間が必要とな
るため、その分だけ工期が延びることになる。 Furthermore, pouring foundation concrete on-site requires a curing period in addition to complicated work on-site, which lengthens the construction period.
このような不具合を解消するために、予め工場
等で製作したコンクリートブロツク製の基礎板を
相互に突合わせて掘削穴の底部にレール状に敷設
し、それらの基礎板上にコンクリートブロツクを
敷設することが考えられる。しかしながら、かか
る方策によると、隣接する基礎板同士の連結度合
が軽微であり、しかも、両側のレールをなす基礎
板がそれぞれ独立した形態にある。このため、地
盤が軟弱な箇所では、基礎板の接合部が緩み、波
打つた状態となる恐れがある。 In order to eliminate such problems, concrete block foundation plates made in advance at a factory, etc. are butted against each other and laid like rails at the bottom of the excavated hole, and concrete blocks are laid on top of these foundation plates. It is possible that However, according to such a measure, the degree of connection between adjacent base plates is slight, and moreover, the base plates forming the rails on both sides are in an independent form. For this reason, in areas where the ground is soft, the joints of the foundation plates may become loose and cause undulations.
かかる不具合は、前記基礎板をコンクリートブ
ロツクと略同幅にすることにより防止可能である
が、このようにすれば、コンクリートが多量に必
要となり、コストの大巾な上昇につながる。そし
て、各基礎板の重量も極めて重くなるため、施工
現場への搬入や敷設作業が困難となる。 This problem can be prevented by making the base plate approximately the same width as the concrete block, but this would require a large amount of concrete, leading to a significant increase in cost. In addition, each foundation plate becomes extremely heavy, making it difficult to carry it to the construction site and perform installation work.
本発明は、以上のような課題を解消することを
目的としている。 The present invention aims to solve the above problems.
［課題を解決するための手段］
本発明は、かかる目的を達成するために、地盤
に形成した掘削穴に複数のコンクリートブロツク
を敷設するための基礎板を、前記掘削穴の底部に
レール状に敷設した第１の基礎板と、該第１の基
礎板間に間欠的に横架した第２の基礎板とで構成
するとともに、前記第１の基礎板および第２の基
礎板に相互に連通する鋼材通路を設け、該鋼材通
路に挿通させた複数本のPC鋼材等の連結部材に
より、前記第１の基礎板と第２の基礎板とを緊締
連結したことを特徴とする。[Means for Solving the Problems] In order to achieve the above object, the present invention provides a base plate for laying a plurality of concrete blocks in an excavated hole formed in the ground in the form of a rail at the bottom of the excavated hole. Consisting of a laid first base plate and a second base plate intermittently suspended horizontally between the first base plates, the first base plate and the second base plate are in communication with each other. The first base plate and the second base plate are tightly connected by a plurality of connecting members made of prestressed steel or the like inserted through the steel passage.
［作用］
以上のような構成によれば、第１の基礎板およ
び第２の基礎板は、予め工場等で細幅に形成して
おくことができる。その際、第１の基礎板には、
両端に貫通させて長手方向へ鋼材通路を設け、第
２の基礎板には、両端側の幅方向に貫通させて鋼
材通路を設けておくことになる。そして、施工現
場では、掘削穴の底部に敷設した第１の基礎板お
よび第２の基礎板の鋼材通路にPC鋼材等の連結
部材を挿入して、該PC鋼材等の連結部材に張力
を与えた状態を第１の基礎板と第２の基礎板とを
接合させることになる。このようにすれば、第１
の基礎板はレール方向へ緊締連結されるととも、
第２の基礎板を介して幅方向へも連結される。こ
のため、隣接する上記基礎板同士が一枚板のよう
になり、各基礎板の不当沈下が防止できる。[Function] According to the above configuration, the first base plate and the second base plate can be formed into narrow widths in advance at a factory or the like. At that time, on the first base plate,
Steel passages are provided in the longitudinal direction by penetrating both ends, and steel passages are provided in the second base plate by penetrating in the width direction at both ends. Then, at the construction site, connecting members such as prestressing steel are inserted into the steel passages of the first and second foundation plates laid at the bottom of the excavation hole, and tension is applied to the connecting members such as prestressing steel. In this state, the first base plate and the second base plate are joined. If you do this, the first
The base plate of is tightened and connected in the direction of the rail,
They are also connected in the width direction via the second base plate. For this reason, the adjacent base plates become like a single plate, and it is possible to prevent each base plate from unduly sinking.
しかして、掘削穴の底部には叙述の基礎板が敷
設されるため、空練モルタルや基礎コンクリート
等が不要になる。 Since the foundation plate described above is laid at the bottom of the excavated hole, dry mortar, foundation concrete, etc. are no longer required.
［実施例］
以下、本発明の一実施例を第１図〜第４図を参
照して説明する。[Example] Hereinafter, an example of the present invention will be described with reference to FIGS. 1 to 4.
この基礎板１は、地盤２に形成した掘削穴３に
コンクリートブロツクたる筐形のボツクスカルバ
ート４を複数個連結して、地下に暗渠等を構築す
る場合に利用するもので、掘削穴３の底部３ａに
レール状に敷設した第１の基礎板５と、第１の基
礎板５間に横架させて間欠的に配置した第２の基
礎板６とで構成してある。 This foundation plate 1 is used when constructing an underground culvert by connecting a plurality of concrete block box-shaped box culverts 4 to an excavated hole 3 formed in the ground 2. It is composed of a first base plate 5 laid in a rail-like manner on the base plate 3a, and a second base plate 6 intermittently disposed horizontally between the first base plates 5.
第１基礎板５は、プレキヤスト製の鉄筋コンク
リート構造をした長板状に形成してあり、その両
端を接合面７，８としている。双方の接合面７，
８には、それぞれ幅方向へ凹溝７ａ，８ａを形成
してある。また、この第１の基礎板５には、一方
の凹溝７ａの底から他方の凹溝８ａの底にまで貫
通する鋼材通路９を長手方向の中央部に設けてあ
る。 The first base plate 5 is formed in the shape of a long plate having a reinforced concrete structure made of precast, and has joint surfaces 7 and 8 at both ends thereof. Both joint surfaces 7,
8, grooves 7a and 8a are formed in the width direction, respectively. Further, the first base plate 5 is provided with a steel passage 9 in the longitudinal center thereof, which penetrates from the bottom of one groove 7a to the bottom of the other groove 8a.
第２の基礎板６は、プレキヤスト製の鉄筋コン
クリート構造をした短寸の板状に形成してあり、
その両端部の幅方向の両面を接合面１０，１１と
している。両方の接合面１０，１１には、それぞ
れ長手方向へ凸条１０ａ，１１ａを形成してあ
る。また、この第２の基礎板６の両端部には、一
方の凸条１０ａの突出面から他方の凸条１１ａの
突出面にまで貫通するとともに、前記第１の基礎
板５の鋼材通路９に連通する鋼材通路１２を設け
てある。そして、各鋼材通路１２の途中に該第２
の基礎板６の上面に開口する連結用ボツクス１３
をそれぞれ設けてある。 The second foundation plate 6 is formed into a short plate shape with a reinforced concrete structure made of precast.
Both ends in the width direction are joint surfaces 10 and 11. Both joint surfaces 10 and 11 are provided with protrusions 10a and 11a in the longitudinal direction, respectively. Further, at both ends of the second base plate 6, the projecting surface of one of the protrusions 10a is penetrated to the protruding surface of the other protrusion 11a, and the steel passage 9 of the first base plate 5 is connected to the protruding surface of the protruding strip 10a. A communicating steel passage 12 is provided. Then, in the middle of each steel passage 12, the second
A connecting box 13 opened on the top surface of the base plate 6 of
are provided for each.
しかして、第１の基礎板５および第２の基礎板
６は、工場等で叙述の如く形成された後、掘削穴
３の底部３ａに敷設した基礎栗石１４上に敷設す
るようにしている。第１の基礎板５は、基礎栗石
１４上の両側にレール状に敷設し、第２の基礎板
６は、レール状をなす両側の第１の基礎板５に直
交させて配置してある。そして、第１の基礎板５
の他方の凹溝８ａと第２の基礎板６の一方の凸条
１０ａとを突合わせ、第２の基礎板６の他方の凸
条１１ａと第１の基礎板５の一方の凹溝７ａとを
突合わせてある。次いで、隣接する第１の基礎板
５と第２の基礎板６とをPC鋼材等の連結部材た
る連結棒１５を用いて、順次レール方向へ緊締連
結するようにしている。 Thus, the first foundation plate 5 and the second foundation plate 6 are formed in a factory or the like as described above, and then laid on the foundation stone 14 laid at the bottom 3a of the excavated hole 3. The first base plate 5 is laid in a rail shape on both sides of the foundation stone 14, and the second base plate 6 is arranged perpendicularly to the first base plate 5 on both sides forming the rail shape. And the first base plate 5
The other concave groove 8a and one convex line 10a of the second base plate 6 are butted, and the other convex line 11a of the second base plate 6 and one concave groove 7a of the first base plate 5 are aligned. are compared. Next, the adjacent first base plate 5 and second base plate 6 are sequentially tightened and connected in the rail direction using a connecting rod 15 which is a connecting member made of prestressed steel or the like.
第１の基礎板５と第２の基礎板６とを緊締連結
する場合は、例えば第４図ａ〜ｃに示すように、
連結しようとする第１の基礎板５′と第２の基礎
板６′の鋼材通路９，１２に両端に螺子部１５ａ，
１５ｂを設けた前記連結棒１５を外方端側Ａから
挿入し、その一端螺子部１５ａを連結済みの隣接
する第２の基礎板６の連結用ボツクス１３内でナ
ツト１６により一旦仮固定する。そして、連結し
ようとする第１の基礎板５′と第２の基礎板６′の
外方端側Ａから、緊張棒１７を第２の基礎板６′
の接合面１１との間に油圧ジヤツキ１８を挾んだ
状態で挿入し、その挿入端１７ａを第２の基礎板
６′の連結用ボツクス１３内で、連結棒１５の他
端螺子部１５ｂと連結子１９を介して連結させ
る。次いで、前記油圧ジヤツキ１８と緊張棒１７
との協働によつて、連結せんとする第１の基礎板
５′と第２の基礎板６′を連結済みの第２の基礎板
６に密着させつつ、前記連結棒１５を緊張させた
状態で、該連結棒１５の他端螺子部１５ｂに予め
螺合させたナツト２０を締付ける。しかる後、第
４図ｃに示すように、連結子１９を外して緊張棒
１７を抜き取る。このような作業によつて、第１
の基礎板５と第２の基礎板６とを緊張状態で連結
した後、レール状をなす両側の第１の基礎板５上
にボツクスカルート４を架け渡して順次敷設する
ようにしている。 When the first base plate 5 and the second base plate 6 are tightly connected, for example, as shown in FIGS. 4a to 4c,
Threaded portions 15a,
The connecting rod 15 provided with the connecting rod 15b is inserted from the outer end side A, and its one end threaded portion 15a is temporarily fixed with a nut 16 within the connecting box 13 of the connected adjacent second base plate 6. Then, from the outer end side A of the first base plate 5' and second base plate 6' to be connected, the tension rod 17 is inserted into the second base plate 6'.
The hydraulic jack 18 is inserted between the connecting surface 11 of the connecting rod 15 and the other end threaded portion 15b of the connecting rod 15, and its insertion end 17a is inserted into the connecting box 13 of the second base plate 6'. They are connected via a connector 19. Next, the hydraulic jack 18 and the tension rod 17
The connecting rod 15 is tensioned while the first base plate 5' and the second base plate 6' to be connected are brought into close contact with the already connected second base plate 6. In this state, the nut 20 previously screwed onto the threaded portion 15b at the other end of the connecting rod 15 is tightened. Thereafter, as shown in FIG. 4c, the connector 19 is removed and the tension rod 17 is pulled out. Through such work, the first
After the base plate 5 and the second base plate 6 are connected under tension, the boxcar route 4 is laid over the first base plates 5 on both sides forming a rail shape and successively laid.
なお、第１の基礎板５と第２の基礎板６とによ
つて囲まれた中間部には、切込砕石２１等を敷き
詰めるようにしている。 Incidentally, the intermediate portion surrounded by the first base plate 5 and the second base plate 6 is filled with cut crushed stone 21 and the like.
このような構成によると、第１の基礎板５は長
手方向へ緊締状態で連結されるとともに、第２の
基礎板６によつて幅方向へも強固に連結され、隣
接する第１の基礎板５と第２の基礎板６とが一枚
の板状となる。このため、掘削穴３の底部３ａに
軟弱な箇所が生じても、かかる基礎板１に波打現
象が発生し難い。 According to such a configuration, the first base plate 5 is connected in a tightened state in the longitudinal direction, and is also firmly connected in the width direction by the second base plate 6, so that the first base plate 5 adjacent to the first base plate 5 and the second base plate 6 form a single plate. For this reason, even if a soft spot occurs in the bottom 3a of the excavated hole 3, the waving phenomenon is unlikely to occur in the base plate 1.
したがつて、このような構成からなる基礎板１
を利用すれば、空練りモルタル等を利用する場合
に比較して、ボツクスカルバート４の下方からの
支持強度を確実に高めることができる。このた
め、かかる基礎板１上に敷設されたボツクスカル
バート４の不当沈下が有効に防止できる。しか
も、空練りモルタルや基礎コンクリート等が不要
になるため、施工現場での作業性が良くなるとと
もに、工期の大巾な短縮が可能である。 Therefore, the base plate 1 having such a configuration
By using this, the support strength from below of the box culvert 4 can be reliably increased compared to the case where dry-kneaded mortar or the like is used. Therefore, unreasonable settling of the box culvert 4 laid on the base plate 1 can be effectively prevented. Moreover, since dry mixing mortar, foundation concrete, etc. are no longer required, work efficiency at the construction site is improved and the construction period can be significantly shortened.
また、第１の基礎板５の接合面７，８と第２の
基礎板６の接合面１０，１１には、それぞれ凹溝
７ａ，８ａと凸条１０ａ，１１ａを設けてあるた
め、各基礎板５，６を連結する際の位置決めが容
易になる。そして、凹溝７ａ，８ａと凸条１０
ａ，１１ａとが嵌合した状態で連結棒１５によつ
て緊締連結されるため、各接合面７，１１，８，
１０間の位置ずれが確実に防止できる。 Further, since grooves 7a, 8a and protrusions 10a, 11a are provided on the joint surfaces 7, 8 of the first foundation plate 5 and the joint surfaces 10, 11 of the second foundation plate 6, respectively, each foundation Positioning when connecting the plates 5 and 6 becomes easier. Then, the concave grooves 7a, 8a and the protrusion 10
a, 11a are tightly connected by the connecting rod 15 in the fitted state, so each joint surface 7, 11, 8,
Misalignment between 10 and 10 mm can be reliably prevented.
以上、本発明の一実施例について述べたが、本
発明は上記実施例に限定されないのは勿論であ
る。例えば、第１の基礎板と第２の基礎板の接合
面にそれぞれ設けた凹溝と凸条は必ずしも必要で
はないが、接合面に相互に嵌合する凹凸を設けて
おけば、叙述の効果が得られる。 Although one embodiment of the present invention has been described above, it goes without saying that the present invention is not limited to the above embodiment. For example, although grooves and protrusions provided on the joining surfaces of the first and second foundation plates are not necessarily necessary, providing recesses and recesses that fit together on the joining surfaces will improve the effect of the description. is obtained.
また、連結用ボツクスは、第１の基礎板に設け
てもよいが、上記実施例の如く第２基礎板に設け
ておくと、緊張棒を短くすることができるため、
連結作業性が良くなる。 Further, the connecting box may be provided on the first base plate, but if it is provided on the second base plate as in the above embodiment, the tension bar can be shortened.
Improves connection workability.
さらに、上記実施例では基礎板を平板状のもの
としたが、基礎板の形状等はこのようなものに限
定されないのは勿論である。例えば第５図に示す
ように、第１の基礎板１０５をＬ字形に形成し、
第２の基礎板を凹状に形成してもよい。しかし
て、このようなものであると、掘削穴１０３内に
レール状に敷設した基礎板１０１全体が凹状とな
る。そして、その内側にコンクリートブロツクた
るボツクスカルバート１０４を嵌合させるように
すれば、ボツクスカルバート１０４を敷設する際
の位置決めが容易となり、敷設作業を効率良く行
うことができる。しかも、全体が凹状となる基礎
板１０１をPC鋼材等の連結部材たる連結棒１１
５により緊締連結すると、全体の剛性がさらに高
まるため、上方からの荷重に対して基礎板１０１
が撓んだり、地盤の軟弱な箇所で波状となるよう
な不具合が解消できる。その結果、基礎板１０１
上に敷設されたボツクスカルバート１０４の不同
沈下が防止できる。 Further, in the above embodiments, the base plate is shaped like a flat plate, but the shape of the base plate is, of course, not limited to this. For example, as shown in FIG. 5, the first base plate 105 is formed into an L shape,
The second base plate may be formed in a concave shape. In this case, the entire base plate 101 laid in the shape of a rail within the excavated hole 103 becomes concave. If the box culvert 104, which is a concrete block, is fitted inside the box culvert 104, positioning when laying the box culvert 104 becomes easy, and the laying work can be carried out efficiently. Moreover, the base plate 101, which has a concave shape as a whole, is connected to a connecting rod 11, which is a connecting member made of prestressed steel or the like.
5, the overall rigidity is further increased, so that the foundation plate 101 can withstand loads from above.
Problems such as bending of the ground or wavy formation in soft areas of the ground can be resolved. As a result, the base plate 101
Uneven settling of the box culvert 104 laid above can be prevented.
あるいは、第６図に示すように、PC鋼材等の
連結部材たる連結棒２１５により緊締連結する第
１の基礎板２０５等の底面の両端に長手方向に延
びる連続的な突条２０５ａを形成してもよい。そ
して、該突条２０５ａを掘削穴２０３に敷設した
基礎栗石２１４等に食込ませるようにして固定す
れば、基礎板２０１全体が横方向へ位置ずれする
ことがない。しかも、基礎板２０１全体の剛性も
高まるため、その上に載置するコンクリートブロ
ツクたるボツクスカルバート２０４等の荷重に対
して変形し難くなる。 Alternatively, as shown in FIG. 6, continuous protrusions 205a extending in the longitudinal direction are formed at both ends of the bottom surface of the first base plate 205, etc., which are tightly connected by a connecting rod 215, which is a connecting member such as a prestressing steel material. Good too. If the protrusion 205a is fixed by biting into the foundation stone 214 laid in the excavated hole 203, the entire foundation plate 201 will not shift in the lateral direction. Furthermore, since the rigidity of the entire base plate 201 is increased, it becomes difficult to deform under the load of the box culvert 204, etc., which is a concrete block placed thereon.
また、第７図に示すように、PC鋼材等の連結
部材たる連結棒３１５により緊締連結する第１の
基礎板３０５等の底面に複数の突起３０５ａを形
成し、それらの突起３０５ａを掘削穴３０３の底
部３０３ａに直接に嵌入させてもよい。しかし
て、かかる基礎板３０１によると、その底面積が
大巾に増加するとともに、底部３０３ａから受け
る浮力を増大させることができる。このため、地
盤３０２の軟弱な箇所等においては、基礎板３０
１が揺るぎ難くなり、その上に敷設するコンクリ
ートブロツクたるボツクスカルバート３０４が不
同沈下し難くなる。 In addition, as shown in FIG. 7, a plurality of protrusions 305a are formed on the bottom surface of the first base plate 305, etc., which are tightly connected by a connecting rod 315, which is a connecting member such as PC steel, and these protrusions 305a are inserted into the excavated hole 303. It may be directly fitted into the bottom 303a of the. According to the base plate 301, the bottom area thereof can be greatly increased, and the buoyant force received from the bottom portion 303a can be increased. Therefore, in places where the ground 302 is soft, the foundation plate 302
1 becomes difficult to shake, and the box culvert 304, which is a concrete block laid thereon, becomes difficult to settle unevenly.
［発明の効果］
本発明では、レール状に敷設した基礎板をPC
鋼材等の連結部材を利用して緊締連結するように
しているので、地盤の軟弱な箇所においても基礎
板を揺るぎ難いものにすることができる。その結
果、かかる基礎板上に敷設されたコンクリートブ
ロツクの不同沈下を有効に防止することができ
る。[Effect of the invention] In the present invention, the base plate laid in the shape of a rail is
Since the connection members such as steel are used for tight connection, the foundation plate can be made stable even in areas where the ground is soft. As a result, it is possible to effectively prevent uneven settling of concrete blocks laid on such foundation plates.
また、本発明による基礎板を利用すると、空練
モルタルや基礎コンクリート等が不要となるの
で、コストの低減が可能であるとともに、工期を
確実に短縮することができる。 Further, when the base plate according to the present invention is used, dry mortar, foundation concrete, etc. are not required, so it is possible to reduce costs and reliably shorten the construction period.
第１図〜第４図は本発明の一実施例を示し、第
１図は基礎板の斜視図、第２図は使用状態を示す
側面図、第３図は第２図における−線の矢示
断面図、第４図ａ〜ｃは基礎板同士を緊締連結す
る手順を示す工程説明図である。第５図〜第７図
はそれぞれ本発明の他の実施例を示す第３図相当
の断面図である。
１……基礎板、２……地盤、３……掘削穴、３
ａ……底部、４……コンクリートブロツク（ボツ
クスカルバート）、５……第１の基礎板、６……
第２の基礎板、７，８……接合面、７ａ，８ａ…
…凹溝、９……鋼材通路、１０，１１……接合
面、１０ａ，１１ａ……凸条、１２……鋼材通
路、１３……連結用ボツクス、１４……基礎栗
石、１５……連結部材（連結棒）、１５ａ……一
端螺子部、１５ｂ……他端螺子部、１６……ナツ
ト、１７……緊張棒、１７ａ……挿入端、１８…
…油圧ジヤツキ、１９……連結子、２０……ナツ
ト、２１……切込砕石、１０１……基礎板、１０
３……掘削穴、１０４……コンクリートブロツク
（ボツクスカルバート）、１０５……第１の基礎
板、１１５……連結部材（連結棒）、２０１……
基礎板、２０３……掘削穴、２０４……コンクリ
ートブロツク（ボツクスカルバート）、２０５…
…第１の基礎板、２０５ａ……凸条、２１４……
基礎栗石、２１５……連結部材（連結棒）、３０
１……基礎板、３０２……地盤、３０３……掘削
穴、３０３ａ……底部、３０４……コンクリート
ブロツク（ボツクスカルバート）、３０５……第
１の基礎板、３０５ａ……突起、３１５……連結
部材（連結棒）。
1 to 4 show one embodiment of the present invention, FIG. 1 is a perspective view of the base plate, FIG. 2 is a side view showing the state of use, and FIG. 3 is an arrow indicated by the - line in FIG. The cross-sectional views and FIGS. 4a to 4c are process explanatory diagrams showing the procedure for tightly connecting the base plates to each other. 5 to 7 are sectional views corresponding to FIG. 3 showing other embodiments of the present invention. 1... Foundation plate, 2... Ground, 3... Excavation hole, 3
a... Bottom, 4... Concrete block (box culvert), 5... First foundation plate, 6...
Second base plate, 7, 8... joint surface, 7a, 8a...
... Concave groove, 9 ... Steel material passage, 10, 11 ... Joint surface, 10a, 11a ... Convex strip, 12 ... Steel material passage, 13 ... Connection box, 14 ... Foundation stone, 15 ... Connection member (Connecting rod), 15a... Threaded portion at one end, 15b... Threaded portion at the other end, 16... Nut, 17... Tension rod, 17a... Insertion end, 18...
... Hydraulic jack, 19 ... Connector, 20 ... Nut, 21 ... Cut crushed stone, 101 ... Base plate, 10
3... Excavation hole, 104... Concrete block (box culvert), 105... First foundation plate, 115... Connecting member (connecting rod), 201...
Foundation plate, 203... Excavation hole, 204... Concrete block (box culvert), 205...
...First base plate, 205a... Convex strip, 214...
Basic chestnut stone, 215...Connecting member (connecting rod), 30
1... Foundation plate, 302... Ground, 303... Excavation hole, 303a... Bottom, 304... Concrete block (box culvert), 305... First foundation plate, 305a... Protrusion, 315... Connection Member (connecting rod).
Claims (1)
ブロツクを敷設するための基礎板を、前記掘削穴
の底部にレール状に敷設した第１の基礎板と、該
第１の基礎板間に間欠的に横架した第２の基礎板
とで構成するとともに、前記第１の基礎板および
第２の基礎板に相互に連通する鋼材通路を設け、
該鋼材通路に挿通させた複数本のPC鋼材等の連
結部材により、前記第１の基礎板と第２の基礎板
とを緊締連結したことを特徴とする基礎板。1. A foundation plate for laying a plurality of concrete blocks in an excavated hole formed in the ground is intermittently placed between a first foundation plate laid in the shape of a rail at the bottom of the excavated hole and the first foundation plate. a horizontally suspended second base plate, and a steel passage that communicates with the first base plate and the second base plate is provided,
A base plate characterized in that the first base plate and the second base plate are tightly connected by a plurality of connecting members such as prestressed steel materials inserted through the steel passages.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP9637188A JPH01268932A (en) | 1988-04-19 | 1988-04-19 | Base plate |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP9637188A JPH01268932A (en) | 1988-04-19 | 1988-04-19 | Base plate |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH01268932A JPH01268932A (en) | 1989-10-26 |
| JPH0366461B2 true JPH0366461B2 (en) | 1991-10-17 |
Family
ID=14163110
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP9637188A Granted JPH01268932A (en) | 1988-04-19 | 1988-04-19 | Base plate |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH01268932A (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP4917576B2 (en) * | 2008-06-27 | 2012-04-18 | 隆昭 遠藤 | Precast concrete foundation slab and its construction method |
| JP5368533B2 (en) * | 2011-11-21 | 2013-12-18 | 旭コンクリート工業株式会社 | Concrete product construction method |
-
1988
- 1988-04-19 JP JP9637188A patent/JPH01268932A/en active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| JPH01268932A (en) | 1989-10-26 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US4314775A (en) | Method of site casting tunnels, culverts, pressure pipes with minimum forming | |
| US6243994B1 (en) | Joint for pre-cast concrete twin-leaf arch sections | |
| US2948995A (en) | Connections between reinforced, precast concrete structures and method of making same | |
| KR101204763B1 (en) | Structure of sandwich pannel with precast concrete and cast in place concrete for pipe utility conduit | |
| CN103249893B (en) | For the cement board structure of bridge | |
| US20200130229A1 (en) | Pre-Stressed Box Culvert and Methods for Assembly Thereof | |
| CN212865649U (en) | Prefabricated formula box culvert and concatenation formula concrete culvert pipe | |
| US8425152B1 (en) | Arched culvert and method of manufacture | |
| CN111074767A (en) | A double-block prefabricated and assembled anti-collision guardrail and construction method | |
| RU2144637C1 (en) | Pipe line for transportation of fluid medium and method of its erection | |
| JPH01268932A (en) | Base plate | |
| CN113802746A (en) | Hollow close-splicing and overlapping bidirectional plate of prestressed concrete steel bar truss | |
| JPH01187236A (en) | Laying of concrete block and its foundation slab | |
| JPH0892970A (en) | Foundation structure | |
| CN116517018A (en) | Prefabricated retaining wall and its construction method | |
| JP3625750B2 (en) | Structure of the basement of the building | |
| JP2001164559A (en) | Construction method of continuous underground wall guide wall making use of l-type precast member | |
| JP2002115324A (en) | Column base unit, column integrated column base fixing foundation structure using the column base unit, and construction method therefor | |
| GB2161512A (en) | Wall panel of concrete blocks | |
| KR20040003579A (en) | Conduit using phc pile | |
| CN119980963B (en) | Cast-in-situ mixed quick construction method for water delivery channel assembly | |
| JP7772513B2 (en) | Road structure and construction method for road structure | |
| CN221523601U (en) | Hydraulic and hydroelectric engineering high side slope assembled supporting structure | |
| CN219972914U (en) | Precast beam body and precast bent cap | |
| CN112878311B (en) | Connecting structure suitable for ultra-deep foundation pit underground diaphragm wall and construction method thereof |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| R250 | Receipt of annual fees |
Free format text: JAPANESE INTERMEDIATE CODE: R250 |
|
| EXPY | Cancellation because of completion of term | ||
| FPAY | Renewal fee payment (prs date is renewal date of database) |
Year of fee payment: 17 Free format text: PAYMENT UNTIL: 20081017 |