JPH10121728A - Execution method of concrete joint part in inverted construction - Google Patents

Execution method of concrete joint part in inverted construction

Info

Publication number
JPH10121728A
JPH10121728A JP28071796A JP28071796A JPH10121728A JP H10121728 A JPH10121728 A JP H10121728A JP 28071796 A JP28071796 A JP 28071796A JP 28071796 A JP28071796 A JP 28071796A JP H10121728 A JPH10121728 A JP H10121728A
Authority
JP
Japan
Prior art keywords
concrete
cotter
cast
post
recess
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.)
Pending
Application number
JP28071796A
Other languages
Japanese (ja)
Inventor
Nobuaki Matatsu
Terumitsu Mochizuki
Takahisa Senda
Shiyuuichi Tomoda
隆久 千田
秀一 朋田
照光 望月
伸彰 真達
Original Assignee
Fujita Corp
株式会社フジタ
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 Fujita Corp, 株式会社フジタ filed Critical Fujita Corp
Priority to JP28071796A priority Critical patent/JPH10121728A/en
Publication of JPH10121728A publication Critical patent/JPH10121728A/en
Pending legal-status Critical Current

Links

Abstract

PROBLEM TO BE SOLVED: To completely transmit a shearing force at concrete joint, by forming a recess in a fitting part of a cotter after precast concrete has been placed and filling post-cast concrete in the recess to engage the precast and post-cast concrete parts. SOLUTION: A wooden cotter 1 is attached to one side of the bottom form of precast concrete part A, parallelly to a wall and a wooden cotter 3 is attached in the right-angles direction of the wall, between the wooden cotter 1 and vertical reinforcements 2 of the outside side wall. Then, the reinforcement 2 and reinforcements 5 of the inside wall are assembled and a wall form 7 is erected and then post-cast concrete is placed. After precast concrete has been placed, a recess is formed in the fitting part of the cotter and post-cast concrete is charged in the recess to mutually engage both concretes. The shearing force of the whole concrete structure is transmitted by the balance of the support strength of the face at the rising part of the recess and the shearing strength of the face at the root of protrusion.

Description

【発明の詳細な説明】DETAILED DESCRIPTION OF THE INVENTION
【0001】[0001]
【発明の属する技術分野】本発明は建築物の地下構造部
コンクリート工事において適用される逆打ち工法のコン
クリート打継ぎ部分の施工法に係るものである。
BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method of constructing a concrete splicing portion of a reverse-casting method applied to concrete work of an underground structure of a building.
【0002】[0002]
【従来の技術】前記逆打ち工法における空隙の処理方法
においては先打ち躯体と後打躯体との間に空隙を設け
て、注入パイプを介して注入材を注入充填する注入法
や、先打ちコンクリートと後打ちコンクリートとの間に
10〜15cmの隙間を開けて、後打ちコンクリートの
レイタンスを処理し、コンクリート硬化後、型枠を設置
し無収縮モルタルを充填して打継ぎ部の処理を行う充填
法が行なわれている。このうち充填法が性能的に優れて
いるとして多用されていたが、最近では省力を目的とす
る直接法が汎用されている。
2. Description of the Related Art In the method of treating voids in the above-mentioned back-casting method, a void is provided between a pre-cast body and a post-cast body, and an injection method in which an injection material is injected and filled through an injection pipe, or a pre-cast concrete. A gap of 10 to 15 cm is opened between the concrete and the post-cast concrete, the latence of the post-cast concrete is processed, and after the concrete is hardened, the formwork is installed, and the non-shrink mortar is filled to process the joint. The law is being enforced. Of these, the filling method has been frequently used because of its excellent performance, but recently, the direct method for the purpose of labor saving has been widely used.
【0003】[0003]
【発明が解決しようとする課題】しかしながら前記直接
法ではどうしても後打ちコンクリートの沈降によって打
継部に隙間を生じ、そのため、打継部におけるせん断力
の伝達が不完全となる。本発明はこのような問題点に鑑
みて提案されたもので、その目的とするところは、先打
ちコンクリートと後打ちコンクリートの打継ぎ部分にお
けるせん断力の伝達が完全に行なわれる逆打ち工法にお
けるコンクリート打継ぎ部分の施工法を提供する点にあ
る。
However, in the above-mentioned direct method, a gap is formed in the joint portion due to the sedimentation of the post-cast concrete, so that the transmission of the shearing force in the joint portion is incomplete. The present invention has been proposed in view of such problems, and an object of the present invention is to provide a concrete in a reverse-casting method in which a shear force is completely transmitted at a joint between a pre-cast concrete and a post-cast concrete. It is intended to provide a method for constructing a joint.
【0004】[0004]
【課題を解決するための手段】前記の目的を達成するた
め、本発明に係る逆打ち工法におけるコンクリート打継
ぎ部分の施工法によれば、建築物の地下構造部コンクリ
ート工事に適用される逆打ち工法におけるコンクリート
打継ぎ部において、先打ち部分の底部にコッターを取り
付け、先打ちコンクリート打設後に同コッターの取付部
に凹部を形成し、同凹部に後打ちコンクリートを充填
し、前記先打ち、後打ちコンクリート部分を噛合せしめ
ることを特徴とするものである。
In order to achieve the above-mentioned object, according to the construction method of the concrete splicing portion in the reverse construction method according to the present invention, the reverse striking applied to the concrete work of the underground structure of the building is performed. In the concrete splicing part in the construction method, a cotter is attached to the bottom of the pre-cast part, a recess is formed in the mounting part of the cotter after the pre-cast concrete is placed, the recess is filled with post-cast concrete, and the pre-cast, It is characterized in that the pour concrete portion is engaged.
【0005】[0005]
【発明の実施の形態】以下、本発明を図面に示す本発明
の最も好適な実施の形態について説明する。コンクリー
ト先打ち部Aの底型枠の片側に、壁面に合わせ、壁と平
行に角材より構成されたテーパー付きの木コッター1を
取り付け、次いで同木コッター1と外部側壁縦鉄筋2と
の間に納まる長さの角材よりなるテーパー付きの木コッ
ター3を鉄筋ピッチを考慮して、壁と直交方向に、先に
取り付けられた角材よりなる木コッター1に接するよう
に取り付ける。
DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The preferred embodiments of the present invention will be described below with reference to the drawings. On one side of the bottom formwork of the concrete pre-cast part A, a wooden cotter 1 with a taper made of square material is attached in parallel with the wall to fit the wall, and then between the wooden cotter 1 and the external side wall vertical reinforcing bar 2. A tapered wood cotter 3 made of a square timber that fits is attached in consideration of the rebar pitch so as to be in contact with the wood cotter 1 made of the previously installed square timber in a direction perpendicular to the wall.
【0006】次いで外部側壁縦鉄筋2の内側に止水用ゴ
ム4を取り付け前記外部側壁縦鉄筋2及び内部側壁縦鉄
筋5を組み立て、コンクリート先打ち部Aにコンクリー
ト後打ち部Bに跨るように止水ゴム6を取り付けて、壁
型枠7を建て込み,後打ちコンクリートを打設する。コ
ンクリート後打ち部Bでは目地部分の上部に1メートル
前後のピッチで空気抜き穴8を穿設しておき、同空気抜
き穴8からコンクリートが吹き出すのを確認しながらコ
ンクリートを打設する。
Next, a waterproof rubber 4 is attached to the inside of the outer side wall vertical reinforcing bar 2, and the outer side wall vertical reinforcing bar 2 and the inner side wall vertical reinforcing bar 5 are assembled. The water rubber 6 is attached, the wall form 7 is erected, and post-cast concrete is poured. In the post-concrete portion B, air vent holes 8 are drilled at a pitch of about 1 meter above the joints, and concrete is poured while confirming that the concrete blows out from the air vent holes 8.
【0007】図示の実施例は前記したように構成されて
いるので、コンクリート先打ち部Aの底部に木コッター
1,3が取り付けられていることにより、先打ちコンク
リート打設後、前記コッター取付部に凹部が形成され、
同凹部に後打ちコンクリートが充填され、両コンクリー
トが互いに噛合することによって、前記凹部の立上り部
分の面の支圧耐力と、凸部のつけ根部分のせん断耐力と
のバランスによって、コンクリート構造体全体のせん断
力を伝達させるものである。
In the embodiment shown in the drawings, since the wooden cotters 1 and 3 are attached to the bottom of the concrete pre-casting section A, after the concrete pre-casting, the cotter mounting section is installed. A recess is formed in the
The concave portion is filled with post-cast concrete, and the two concretes mesh with each other, so that the balance between the bearing capacity of the rising portion of the concave portion and the shear strength of the base portion of the convex portion makes the entire concrete structure. It transmits the shearing force.
【0008】[0008]
【発明の効果】本発明は建築物の地下構造部コンクリー
ト工事に適用される逆打ち工法におけるコンクリート打
継ぎ部において、先打ち部分の底部にコッターを取り付
けて、先打ちコンクリートの打設後、同コッターの取付
部に形成された凹部に、後打ちコンクリートを充填し、
かくして前記先打ち、後打ちコンクリートの打継ぎ部分
を噛合せしめることによって簡単な施工で、コンクリー
ト構造体全体のせん断耐力を確実に伝達させることがで
きるものである。
According to the present invention, a concrete butt joint is applied to the underground construction of an underground structure of a building, and a cotter is attached to the bottom of the pre-cast part. Fill the recess formed in the mounting part of the cotter with post-cast concrete,
Thus, the shear strength of the entire concrete structure can be reliably transmitted with a simple construction by engaging the joint portions of the first and second cast concrete.
【図面の簡単な説明】[Brief description of the drawings]
【図1】本発明に係る逆打ち工法におけるコンクリート
打継ぎ部分のコッター取付部を示す平面図である。
FIG. 1 is a plan view showing a cotter attachment portion of a concrete splicing portion in a reverse casting method according to the present invention.
【図2】前記コッター取付部を示す断面図である。FIG. 2 is a cross-sectional view showing the cotter mounting portion.
【図3】後打ち壁型枠建込み状態を示す断面図である。FIG. 3 is a cross-sectional view showing a state in which a post-molded wall form is built.
【符号の説明】[Explanation of symbols]
A コンクリート先打ち部 B コンクリート後打ち部 1 木コッター 2 外部側壁縦鉄筋 3 木コッター 4 止水用ゴム 5 内部側壁縦鉄筋 6 止水ゴム 7 壁型枠 8 空気抜き穴 Reference Signs List A Ahead part of concrete B Ahead part of concrete 1 Wood cotter 2 Vertical reinforcing bar on outer side wall 3 Wood cotter 4 Rubber for water stopping 5 Vertical reinforcing bar on inner side wall 6 Water stopping rubber 7 Wall form 8 Air vent hole
───────────────────────────────────────────────────── フロントページの続き (72)発明者 真達 伸彰 東京都渋谷区千駄ヶ谷四丁目6番15号 株 式会社フジタ内 ──────────────────────────────────────────────────続 き Continuing on the front page (72) Inventor Nobuaki Manada 4-6-115 Sendagaya, Shibuya-ku, Tokyo Inside Fujita Co., Ltd.

Claims (1)

    【特許請求の範囲】[Claims]
  1. 【請求項1】 建築物の地下構造部コンクリート工事に
    適用される逆打ち工法におけるコンクリート打継ぎ部に
    おいて、先打ち部分の底部にコッターを取り付け、先打
    ちコンクリート打設後に同コッターの取付部に凹部を形
    成し、同凹部に後打ちコンクリートを充填し、前記先打
    ち、後打ちコンクリート部分を噛合せしめることを特徴
    とする逆打ち工法におけるコンクリート打継ぎ部分の施
    工法。
    1. A concrete splicing part in a reverse striking method applied to concrete construction of an underground structural part of a building, a cotter is attached to the bottom of the pre-cast part, and a recess is formed in the mounting part of the cotter after the pre-cast concrete is cast. A method of constructing a jointed concrete portion in a reverse-casting method, characterized in that the concave portion is filled with post-cast concrete, and the pre-cast and post-cast concrete portions are engaged with each other.
JP28071796A 1996-10-23 1996-10-23 Execution method of concrete joint part in inverted construction Pending JPH10121728A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP28071796A JPH10121728A (en) 1996-10-23 1996-10-23 Execution method of concrete joint part in inverted construction

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP28071796A JPH10121728A (en) 1996-10-23 1996-10-23 Execution method of concrete joint part in inverted construction

Publications (1)

Publication Number Publication Date
JPH10121728A true JPH10121728A (en) 1998-05-12

Family

ID=17628975

Family Applications (1)

Application Number Title Priority Date Filing Date
JP28071796A Pending JPH10121728A (en) 1996-10-23 1996-10-23 Execution method of concrete joint part in inverted construction

Country Status (1)

Country Link
JP (1) JPH10121728A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103206088A (en) * 2013-04-18 2013-07-17 成军 Shear wall structural wall and slab integral pouring construction method
CN103243915A (en) * 2013-04-28 2013-08-14 浙江宝业建设集团有限公司 Formwork removing and hole sealing method for closed box-shaped structural concrete

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103206088A (en) * 2013-04-18 2013-07-17 成军 Shear wall structural wall and slab integral pouring construction method
CN103206088B (en) * 2013-04-18 2015-10-28 南通卓强建设集团有限公司 Parts of shear wall structure wall, slab integral pouring construction method
CN103243915A (en) * 2013-04-28 2013-08-14 浙江宝业建设集团有限公司 Formwork removing and hole sealing method for closed box-shaped structural concrete

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