JPS621980A - Construction method of pc structure - Google Patents

Construction method of pc structure

Info

Publication number
JPS621980A
JPS621980A JP60140997A JP14099785A JPS621980A JP S621980 A JPS621980 A JP S621980A JP 60140997 A JP60140997 A JP 60140997A JP 14099785 A JP14099785 A JP 14099785A JP S621980 A JPS621980 A JP S621980A
Authority
JP
Japan
Prior art keywords
steel material
reinforcing bars
sheath
construction method
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.)
Granted
Application number
JP60140997A
Other languages
Japanese (ja)
Other versions
JPH0238740B2 (en
Inventor
繁 高橋
田井 博夫
山 毅彦
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Kajima Corp
Original Assignee
Kajima Corp
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Kajima Corp filed Critical Kajima Corp
Priority to JP60140997A priority Critical patent/JPS621980A/en
Publication of JPS621980A publication Critical patent/JPS621980A/en
Publication of JPH0238740B2 publication Critical patent/JPH0238740B2/ja
Granted legal-status Critical Current

Links

Abstract

(57)【要約】本公報は電子出願前の出願データであるた
め要約のデータは記録されません。
(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

【発明の詳細な説明】[Detailed description of the invention]

〔産業上の利用分野〕 本発明は、PC構造物の施工法に関する。 〔従来の技術〕 従来、第4図に示すような卵形消化槽等のI) C構造
物Aにおいては、貯溜された液体の液圧によって生じる
引張力を打し消すために、水平方向及び垂直方向にPC
鋼材1を配設してプ
[Industrial Application Field] The present invention relates to a method of constructing a PC structure. [Prior Art] Conventionally, in I) C structure A such as an egg-shaped digester as shown in Fig. 4, in order to cancel the tensile force generated by the hydraulic pressure of the stored liquid, the horizontal direction and PC vertically
Place steel material 1 and

【メスlレスを導入することが採用
されている。 PC構造物Aは、コンクリ−]、2中に鉄筋を配筋し、
これとともにPCC鋼材を配設してプレストレスを導入
して構築するが、このうり、PC構造物Aの下部底版部
に配設するPC鋼材1ば、第3図に示すように下端が固
定され、上方に行くに従って徐々に水平方向に傾斜する
螺旋状に配設されていて、これを上方から見た場合、時
計廻り方向に弧を描くものと、反時計廻り方向番こ弧を
描くものをそれぞれ配設し、双方が交叉するようになっ
ている。そして、下部に配設したl)C鋼材lの上端は
PC構造物A外側に突出−1しめられて、:1ンクリー
ト2を打設して硬化せしめた後、ジヤツキを載置し、P
C鋼材1を緊張してプレスト【/スを導入する。 PCC鋼材は螺旋状に配設されているため、緊張するこ
とによって水平方向及び垂直方向双方にプレストレスを
同時に導入でき、P(JM材1の傾斜を変えることによ
って水平方向と垂直方向のプレストレスの大きさの比を
調整することが可能である。 〔発明が解決しようとする問題点〕 しかし、1ノ1−のごときPCC鋼材の力ではPC構造
物への底の最深部には該P C鋼材】が通らないものと
なり、液汁両市がこの部分に隼中すると底が抜いてしま
うおそれがある。本発明の1」的はかかる不都合を解消
するものであり、またその施」−1手段として鉄筋等の
ji3材が隼中する底盤部分で作業を行わずともずみ、
施工の合理化を図ることができるI) C構造物の施工
法を提イj(することにある。 〔問題点を解消するための手段〕 本発明GJ前記目的を達成するため、p c構造物に1
几1で、下部の底版部に配設するp c tllI4.
4′catその一部は最深部を中心に上下連続して配設
するものであり、該PC鋼材若しくはそのシースは底版
部鉄筋を地上で地組する際に一緒に予めセットしておく
ことを要旨とするものである。 〔作用〕 本発明によれば、l) C構造物の底版最深部にもP 
C鋼材が’Niff+シ、この部分をMl−げろように
なるので底抜けの心配はなくなる。 また、このように貫jmするI”(:&IA材を込み入
った鉄筋間に配設するζ、二際し、該鉄筋をI+!!、
1−でN11む際にそのもの1!目4=が少なくともシ
ース部分をその間に予めセソトシておくので、狭い空間
ζ、二人間がちくり込んで作業を行わずともよい。 〔実施例〕 以下、図面について本発明の実施例をd′C細に説明す
る。 第3図、第4図番こ示したPC構造物においζ、底版部
コンクリート6内に多くの鉄筋や1)0鋼相が配設され
ることになる。 第1図はその様子を示し、鉄筋は下端筋15aと上端筋
15bとが上下間隔を存して放射状に並び、それぞれに
フープ状の横筋15cfJ<情交して篩形に絹まれ、こ
れらはすべて地上で地組みされるが、その際かかる鉄筋
間にPC鋼材用のシース16及び前記従来例で説明した
PCtlvI′l (この場合はPC横棒)を−緒に組
込むようにした。 前記シースI6は最深部を中心に−L下/J−1’#I
に連続するものであり、該シース16だけでもよいが、
その内部に[〉0鋼より線17を予め挿入しておいても
よい。なお、シース′16だけの場合は、地中に建込 
。 んだ後(ここの中にPC鋼より線17を通すことになる
。 図中、18は地IuJの保持枠を示す。地組々れた鉄筋
等は底盤部所定位置に建込まれ、コンクリーートが上方
から打設されて底版部コンクリート6が形成されるが、
この場合、第2図に示すようにシース16及びPC#I
4より線17(PC鋼材1は第2図では省略する)は底
部最深部を貫通するものとなり、このように枚数のPC
鋼より線17でPC構造物への底部中心は上方に吊上げ
られるものとなる。 〔考案の効果〕 以上述べたように本考案の球形PC構造物の施工法は、
下方に突出したPC構造物において、底部の耐荷重性能
を高めるものであり、そのために込み入った鉄筋間にP
C鋼材を貫通させて配設する作業が伴うとしてもこれを
地上で予め組むことにより、底盤位置での面倒な作業を
なくし、安全性及び作業性を向上させることができるも
のである。
[Introducing a female L-less system has been adopted. PC structure A is made of concrete], with reinforcing bars arranged inside 2,
At the same time, the PCC steel material is installed and prestress is introduced to construct the structure.However, the lower end of the PC steel material 1 installed at the lower bottom slab of the PC structure A is fixed as shown in Fig. 3. , are arranged in a spiral shape that gradually slopes horizontally toward the top, and when viewed from above, there are two types: one that draws an arc in a clockwise direction and one that draws an arc in a counterclockwise direction. Each is placed so that the two intersect. Then, the upper end of the l) C steel material l placed at the bottom is projected outside the PC structure A, and after pouring concrete 2 and hardening it, a jack is placed on it, and the
Tension the C steel material 1 and introduce the presto. Since the PCC steel material is arranged in a spiral, it is possible to simultaneously introduce prestress in both the horizontal and vertical directions by tensioning it, and by changing the inclination of the PCC steel material 1, prestress in the horizontal and vertical directions can be introduced. [Problem to be solved by the invention] However, with the force of PCC steel such as 1-1-, the P C steel material cannot pass through, and there is a risk that the bottom will fall out if the liquid penetrates into this part.The first object of the present invention is to solve this inconvenience, and also to solve the problem. As a result, there is no need to carry out any work on the bottom plate where the JI3 materials such as reinforcing bars are inserted.
The purpose of the present invention is to propose a construction method for a structure that can streamline construction. [Means for solving the problems] to 1
In case 1, p c tll I4. is installed in the lower bottom plate part.
A part of 4'cat is placed continuously above and below centering on the deepest part, and it is recommended that the PC steel material or its sheath be set in advance together with the bottom slab reinforcing bars when assembling it on the ground. This is a summary. [Function] According to the present invention, l) P is also provided at the deepest part of the bottom plate of the C structure.
Since the C steel material becomes 'Niff+' and this part becomes 'Ml-', there is no need to worry about bottoming out. In addition, in this way, I"(: & IA material is placed between the intricate reinforcing bars, ζ, and the reinforcing bars are I+!!
When you get N11 with 1-, it's 1! Since at least the sheath portion is set between the eyes 4 and 4, there is no need for two people to work in a narrow space ζ. [Embodiments] Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings. In the PC structure shown in FIGS. 3 and 4, many reinforcing bars and 1) 0 steel phase are disposed within the bottom slab concrete 6. FIG. 1 shows this situation. The reinforcing bars have lower end reinforcements 15a and upper end reinforcements 15b arranged in a radial pattern with a vertical interval, and each has a hoop-shaped horizontal reinforcement 15cfJ and is tied into a sieve shape. Everything is assembled on the ground, and at that time, the sheath 16 for the PC steel material and the PCtlvI'l (in this case, the PC horizontal bar) explained in the conventional example are installed between the reinforcing bars. The sheath I6 is centered at the deepest part -L lower/J-1'#I
It is continuous to the sheath 16, and only the sheath 16 is sufficient,
The [〉0 steel stranded wire 17 may be inserted in advance into the inside thereof. In addition, if only the sheath '16 is used, it cannot be built underground.
. (The PC steel strand wire 17 will be passed through this. In the figure, 18 indicates the holding frame of the IuJ. The reinforcing bars etc. that were erected in the ground are placed in the predetermined positions of the base, and the concrete is poured from above to form the bottom slab concrete 6,
In this case, as shown in FIG.
4 stranded wire 17 (PC steel material 1 is omitted in Fig. 2) penetrates the deepest part of the bottom, and in this way, the number of PC
The center of the bottom of the PC structure is lifted upward by the steel strands 17. [Effects of the invention] As stated above, the construction method of the spherical PC structure of the invention is as follows:
In PC structures that protrude downward, it increases the load-bearing performance of the bottom, and for that purpose, P is inserted between the intricate reinforcing bars.
Even if work involves penetrating and installing the C steel material, by assembling this in advance on the ground, troublesome work at the bottom board position can be eliminated and safety and workability can be improved.

【図面の簡単な説明】[Brief explanation of drawings]

第1図は本発明工法の実施例を示す側面図、第2図は同
上平面図、第3図は卵形p’c構造物の底版部の横断平
面図、第41図は同」二全体の一部省略した縦断側面図
である。 1・・・PC鋼材      2・・・コンクリ−)・
6・・・底版部コンクリート 15a・・・下端筋 15b・・・上端筋     15G・・・横筋16・
・・シース       17・・・P’C鋼より線1
8・・・地組用の保持枠
Fig. 1 is a side view showing an embodiment of the construction method of the present invention, Fig. 2 is a plan view of the same as above, Fig. 3 is a cross-sectional plan view of the bottom slab of the egg-shaped p'c structure, and Fig. 41 is the whole of the same. FIG. 1...PC steel material 2...concrete)・
6...Bottom slab concrete 15a...Lower end reinforcement 15b...Upper end reinforcement 15G...Horizontal reinforcement 16.
...Sheath 17...P'C steel stranded wire 1
8...Retaining frame for ground assembly

Claims (1)

【特許請求の範囲】[Claims] 下方が球形又は錐体のPC構造物において、下部の底版
部に配設するPC鋼材はその一部は最深部を中心に上下
連続して配設するものであり、該PC鋼材若しくはその
シースは底版部鉄筋を地上で地組する際に一緒に予めセ
ットしておくことを特徴としたPC構造物の施工法。
In a PC structure whose lower part is spherical or conical, a part of the PC steel material disposed in the lower bottom slab is arranged continuously vertically centering on the deepest part, and the PC steel material or its sheath is A construction method for PC structures characterized by setting the bottom slab reinforcing bars together in advance when assembling them on the ground.
JP60140997A 1985-06-26 1985-06-26 Construction method of pc structure Granted JPS621980A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP60140997A JPS621980A (en) 1985-06-26 1985-06-26 Construction method of pc structure

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP60140997A JPS621980A (en) 1985-06-26 1985-06-26 Construction method of pc structure

Publications (2)

Publication Number Publication Date
JPS621980A true JPS621980A (en) 1987-01-07
JPH0238740B2 JPH0238740B2 (en) 1990-08-31

Family

ID=15281755

Family Applications (1)

Application Number Title Priority Date Filing Date
JP60140997A Granted JPS621980A (en) 1985-06-26 1985-06-26 Construction method of pc structure

Country Status (1)

Country Link
JP (1) JPS621980A (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0969547A (en) * 1995-08-31 1997-03-11 Shibaura Eng Works Co Ltd Transfer system
JP7104604B2 (en) * 2018-10-19 2022-07-21 鹿島建設株式会社 Storage tank, construction method of storage tank

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5033346A (en) * 1973-07-16 1975-03-31
JPS5883775A (en) * 1981-11-13 1983-05-19 石川島播磨重工業株式会社 Arrangement structure of pc steel material in prestressed concrete structure

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5033346A (en) * 1973-07-16 1975-03-31
JPS5883775A (en) * 1981-11-13 1983-05-19 石川島播磨重工業株式会社 Arrangement structure of pc steel material in prestressed concrete structure

Also Published As

Publication number Publication date
JPH0238740B2 (en) 1990-08-31

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