JP3298053B2 - Underground tank structure - Google Patents
Underground tank structureInfo
- Publication number
- JP3298053B2 JP3298053B2 JP25334799A JP25334799A JP3298053B2 JP 3298053 B2 JP3298053 B2 JP 3298053B2 JP 25334799 A JP25334799 A JP 25334799A JP 25334799 A JP25334799 A JP 25334799A JP 3298053 B2 JP3298053 B2 JP 3298053B2
- Authority
- JP
- Japan
- Prior art keywords
- side wall
- bottom plate
- underground tank
- tank
- underground
- 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 - Lifetime
Links
Landscapes
- Underground Structures, Protecting, Testing And Restoring Foundations (AREA)
- Filling Or Discharging Of Gas Storage Vessels (AREA)
Description
【０００１】[0001]
【発明の属する技術分野】本発明は、地下タンクの構造
に関するものである。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a structure of an underground tank.
【０００２】[0002]
【従来の技術】従来の地下タンクは図３、４に示すよう
に周囲を連続地中壁ｄによって包囲した側壁ａと底版ｂ
とより構成する。そして側壁ａと底版ｂとの間に目地ｃ
を設け、両者が分離した状態で構成してある。したがっ
て側壁の下端部に過大な応力集中が発生することがなか
った。しかし側壁ａと底版ｂとの間に目地を介在させる
構造では、構造が複雑になること、地下水が侵入する可
能性があること、といった問題があった。そこで本件の
発明者らは今回、図５に示すような、側壁ａと底版ｂと
を剛結合する構造の地下タンクを提案した。2. Description of the Related Art A conventional underground tank has a side wall a and a bottom plate b surrounded by a continuous underground wall d as shown in FIGS.
And the configuration. And joint c between side wall a and bottom plate b
Are provided, and the two are separated from each other. Therefore, excessive stress concentration did not occur at the lower end of the side wall. However, in the structure in which the joint is interposed between the side wall a and the bottom plate b, there are problems that the structure is complicated and that there is a possibility that groundwater may enter. Therefore, the present inventors have proposed an underground tank having a structure in which the side wall a and the bottom plate b are rigidly connected as shown in FIG.
【０００３】[0003]
【本発明が解決しようとする課題】今回提案した、側壁
ａと底版ｂとを剛結合した構造の地下タンクは多くの特
徴を有するが、一方次のような問題がある。 ＜イ＞図５に示すように側壁ａと底版ｂとを剛結合にす
ることによって側壁ａの下端部に応力が集中する部分ｆ
が発生する。 ＜ロ＞側壁下端部に発生する応力集中に対抗するため
に、鉄筋を過密に配置しなければならない。 ＜ハ＞過密な鉄筋の配置のために、コンクリートの流動
性が阻害される可能性がある。The underground tank having a structure in which the side wall a and the bottom plate b are rigidly connected has many features, but has the following problems. <B> As shown in FIG. 5, a portion f where the stress is concentrated on the lower end portion of the side wall a by making the side wall a and the bottom plate b rigidly connected.
Occurs. <B> In order to counter stress concentration occurring at the lower end of the side wall, the reinforcing bars must be densely arranged. <C> Due to the dense arrangement of the reinforcing bars, the fluidity of the concrete may be hindered.
【０００４】[0004]
【本発明の目的】本発明は上記したような従来の問題を
解決するためになされたもので、側壁と底版を剛結合す
ることによる利点を備えつつ、かつ過密な鉄筋の配置を
避けることができる、地下タンクの構造を提供すること
を目的とする。SUMMARY OF THE INVENTION The present invention has been made to solve the above-mentioned conventional problems, and has an advantage of rigidly connecting a side wall and a bottom plate, while avoiding the arrangement of a dense reinforcing bar. It is an object of the present invention to provide a structure of an underground tank.
【０００５】[0005]
【課題を解決するための手段】上記のような目的を達成
するために、本発明の地下タンクの構造は耐水圧強度版
形式の地下タンクにおいて、地下タンクを側壁と底版と
より構成し、かつ側壁と底版との接合部を剛結合し、さ
らに側壁と底版の取り付け部において、側壁の下部の厚
さを、 底版との取り付け部がタンク内側に向けて最も
厚くなる厚さ暫変部として構成した、地下タンクの構造
を特徴としたものである。In order to achieve the above object, the structure of the underground tank according to the present invention is an underground tank of a hydraulic pressure resistant version, wherein the underground tank is constituted by a side wall and a bottom plate, and The joint between the side wall and the bottom plate is rigidly connected, and the thickness of the lower part of the side wall at the attachment portion of the side wall and the bottom plate is configured as a temporary transition part where the attachment portion with the bottom plate becomes thickest toward the inside of the tank It features the structure of an underground tank.
【０００６】[0006]
【本発明の実施の態様】以下図面を参照しながら本発明
の地下タンクの構造の実施例について説明する。DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the structure of an underground tank according to the present invention will be described below with reference to the drawings.
【０００７】＜イ＞前提条件。 本発明の地下タンクは、耐水圧強度版形式の鉄筋コンク
リート製の地下タンクである。この「耐水圧強度版」形
式の地下タンクは、強度的に地下水圧ｐに抵抗する底版
１を備えた地下タンクである。この形式の底版１は、地
下水圧が底版に作用しない減圧版形式の地下タンクや、
あるいは地上タンクと異なり、周囲を地下水で囲まれて
いる。そのために耐水圧強度版形式の地下タンクは高い
止水性を確保することが要求される。<A> Preconditions The underground tank of the present invention is an underground tank made of reinforced concrete of a water-resistant strength version type. This “water pressure resistant version” type underground tank is an underground tank provided with a bottom plate 1 that strongly resists the underground water pressure p. Bottom plate 1 of this type is a depressurized version of an underground tank in which groundwater pressure does not act on the bottom plate,
Or, unlike the above-ground tank, it is surrounded by groundwater. For this reason, it is required that the underwater tank of the water pressure resistant strength type has a high waterproofness.
【０００８】＜ロ＞地下タンクの構築。 地下タンクの構築に際しては一般にまずタンクの構築範
囲の周囲に連続地中壁２を構築して止水する。次に連続
地中壁２で包囲した範囲を底版１の下面まで掘削する。
次に底版１のコンクリートを打設し、さらに側壁３コン
クリートを打設してタンクを完成する。側壁３の内側に
は保冷材を介してメンブレン４を取り付ける。底版１の
内部には一般に底部ヒーター５を配置する。ただし必ず
しも連続地中壁や底部ヒーターを必要とするものではな
い。<B> Construction of an underground tank. When constructing an underground tank, generally, first, a continuous underground wall 2 is constructed around the construction area of the tank and water is stopped. Next, the area surrounded by the continuous underground wall 2 is excavated to the lower surface of the bottom slab 1.
Next, the concrete of the bottom slab 1 is cast and the concrete of the side walls 3 is cast to complete the tank. A membrane 4 is attached to the inside of the side wall 3 via a cold insulator. A bottom heater 5 is generally disposed inside the bottom plate 1. However, the continuous underground wall and the bottom heater are not necessarily required.
【０００９】＜ハ＞側壁と底版の剛結合。 上記したように地下タンクは鉄筋コンクリート製の側壁
３と底版１とより構成する。そして特に本発明の地下タ
ンクにおいては、側壁３と底版１との間に目地を設けな
い。目地を設けずに両者を剛結合して構成する。剛結合
とする構造は、従来公知の方法によって構築することが
できる。こうして底版１と側壁３との連結部に目地を設
けず、剛結合した地下タンクが完成する。<C> Rigid connection between the side wall and the bottom plate. As described above, the underground tank includes the reinforced concrete side walls 3 and the bottom slab 1. Particularly, in the underground tank of the present invention, no joint is provided between the side wall 3 and the bottom plate 1. The two are rigidly connected without any joints. The structure to be a rigid connection can be constructed by a conventionally known method. Thus, no joint is provided at the connection between the bottom plate 1 and the side wall 3, and a rigidly connected underground tank is completed.
【００１０】＜ニ＞厚さ暫変部。 側壁と底版の取り付け部に厚さ暫変部６を設ける。これ
は側壁と底版の取り付け部において、側壁の下部の厚さ
を徐々に変化させた構造である。この暫変部６は側壁の
下端、すなわち底版との取り付け部においてタンク内側
に向けて最も厚く、上部では徐々に薄くなるように構成
してある。このように側壁と底版との取り付け部に暫変
部６を形成したことによって、側壁の下端部に発生する
応力集中を分散することができる。<D> Temporarily changing thickness. The temporary thickness portion 6 is provided on the attachment portion between the side wall and the bottom plate. This is a structure in which the thickness of the lower portion of the side wall is gradually changed at the attachment portion between the side wall and the bottom plate. The temporary portion 6 is configured such that it is thickest toward the inside of the tank at the lower end of the side wall, that is, the portion where it is attached to the bottom plate, and becomes gradually thinner at the upper portion. By forming the temporary portion 6 at the attachment portion between the side wall and the bottom plate, the concentration of stress generated at the lower end of the side wall can be dispersed.
【００１１】[0011]
【本発明の効果】本発明の地下タンクの構造は以上説明
したように、耐圧式強度版形式の地下タンクの側壁と底
版とを剛結合して構成し、側壁と底版の取り付け部に側
壁の厚さの異なる暫変部を設けたから次のような効果を
得ることができる。 ＜イ＞側壁と底版との間に目地が存在しない。そのため
に構造が簡単であり、鉄筋や型枠の組み立てが容易で経
済的に構築することができ、工期の短縮をはかることが
できる。 ＜ロ＞側壁と底版との間に目地が存在しないから、周囲
に存在する地下水などが目地を通ってタンク内部に侵入
する可能性がなく、高い水密性が確保される。 ＜ハ＞側壁の下端部の厚さを徐々に変化させたことによ
って側壁の下部に応力が集中する現象を避けることがで
きる。そのために側壁下部に鉄筋が集中することがな
い。したがって鉄筋が過密化した場所で発生しやすいコ
ンクリートの流動の阻害現象が発生せず、信頼性の高い
コンクリート製の地下タンクを得ることができる。As described above, the structure of the underground tank of the present invention is constructed by rigidly connecting the side wall and the bottom plate of the underground tank of the pressure-resistant strength version type, and the side wall and the bottom plate are attached to the mounting portion of the bottom plate. The following effects can be obtained because the provisional portions having different thicknesses are provided. <B> There is no joint between the side wall and the bottom slab. Therefore, the structure is simple, the assembling of the reinforcing bar and the formwork can be easily and economically performed, and the construction period can be shortened. <B> Since there is no joint between the side wall and the bottom slab, there is no possibility that surrounding groundwater or the like will enter the inside of the tank through the joint, and high watertightness is ensured. <C> By gradually changing the thickness of the lower end portion of the side wall, it is possible to avoid a phenomenon in which stress concentrates on the lower portion of the side wall. Therefore, the rebar does not concentrate on the lower part of the side wall. Therefore, the concrete flow obstruction phenomenon, which is likely to occur in a place where the reinforcing bars are overcrowded, does not occur, and a highly reliable concrete underground tank can be obtained.
【図１】本発明の地下タンクの構造の実施例の説明図。FIG. 1 is an explanatory view of an embodiment of the structure of an underground tank according to the present invention.
【図２】側壁と底版の剛結合部の説明図。FIG. 2 is an explanatory view of a rigid connection portion between a side wall and a bottom plate.
【図３】従来の地下タンクの構造の実施例の説明図。FIG. 3 is an explanatory view of an embodiment of the structure of a conventional underground tank.
【図４】従来の地下タンクの側壁と底版の目地の説明
図。FIG. 4 is an explanatory view of a joint of a side wall and a bottom plate of a conventional underground tank.
【図５】本発明者らが提案した他の発明の実施例の説明
図。FIG. 5 is an explanatory view of an embodiment of another invention proposed by the present inventors.
───────────────────────────────────────────────────── フロントページの続き (72)発明者 山本 平 東京都新宿区西新宿一丁目25番１号 大 成建設株式会社内 (56)参考文献 特開2000−130698（ＪＰ，Ａ) 特開 平７−48951（ＪＰ，Ａ) 特開 平11−166243（ＪＰ，Ａ) (58)調査した分野(Int.Cl.7，ＤＢ名) E02D 29/045 E04H 7/18 301 F17C 13/08 302 ──────────────────────────────────────────────────続 き Continuation of the front page (72) Inventor Taira Yamamoto 1-25-1 Nishi Shinjuku, Shinjuku-ku, Tokyo Inside Taisei Corporation (56) References JP 2000-130698 (JP, A) JP 7-48951 (JP, A) JP-A-11-166243 (JP, A) (58) Fields investigated (Int. Cl. 7 , DB name) E02D 29/045 E04H 7/18 301 F17C 13/08 302
Claims (1)
水圧強度版形式の地下タンクにおいて、 地下タンクを側壁と底版とより構成し、 かつ側壁と底版との接合部を剛結合し、 さらに側壁と底版の取り付け部において、側壁の下部の
厚さを、 底版との取り付け部がタンク内側に向けて最も厚くなる
厚さ暫変部として構成した、 地下タンクの構造。An underground tank of a hydraulic pressure resistant version in which an extension of an outer surface of a side wall and a bottom surface of a bottom plate are substantially perpendicular to each other, wherein the underground tank comprises a side wall and a bottom plate, and a joint between the side wall and the bottom plate is rigidly connected; The structure of the underground tank, where the thickness of the lower part of the side wall at the attachment part between the side wall and the bottom slab is configured as a temporary thickness part where the attachment part to the bottom slab becomes thickest toward the inside of the tank.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP25334799A JP3298053B2 (en) | 1999-09-07 | 1999-09-07 | Underground tank structure |
| KR10-2000-0022837A KR100452735B1 (en) | 1999-09-07 | 2000-04-28 | Structure for underground tank |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP25334799A JP3298053B2 (en) | 1999-09-07 | 1999-09-07 | Underground tank structure |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JP2001073396A JP2001073396A (en) | 2001-03-21 |
| JP3298053B2 true JP3298053B2 (en) | 2002-07-02 |
Family
ID=17250074
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP25334799A Expired - Lifetime JP3298053B2 (en) | 1999-09-07 | 1999-09-07 | Underground tank structure |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3298053B2 (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP6484151B2 (en) * | 2015-09-15 | 2019-03-13 | 鹿島建設株式会社 | Underground structure, construction method of underground structure |
| JP6901956B2 (en) * | 2017-11-06 | 2021-07-14 | 鹿島建設株式会社 | Concrete structure |
-
1999
- 1999-09-07 JP JP25334799A patent/JP3298053B2/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| JP2001073396A (en) | 2001-03-21 |
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