JP3062541B2 - Reverse construction method applied to high strength cast-in-place concrete pile - Google Patents

Reverse construction method applied to high strength cast-in-place concrete pile

Info

Publication number
JP3062541B2
JP3062541B2 JP4116145A JP11614592A JP3062541B2 JP 3062541 B2 JP3062541 B2 JP 3062541B2 JP 4116145 A JP4116145 A JP 4116145A JP 11614592 A JP11614592 A JP 11614592A JP 3062541 B2 JP3062541 B2 JP 3062541B2
Authority
JP
Japan
Prior art keywords
place concrete
ground
guide pipe
strength cast
construction
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 - Fee Related
Application number
JP4116145A
Other languages
Japanese (ja)
Other versions
JPH05311683A (en
Inventor
誠 長曽我部
正昭 加倉井
清 山下
富男 土屋
毅 山田
拓平 福原
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.)
Takenaka Corp
Original Assignee
Takenaka 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 Takenaka Corp filed Critical Takenaka Corp
Priority to JP4116145A priority Critical patent/JP3062541B2/en
Publication of JPH05311683A publication Critical patent/JPH05311683A/en
Application granted granted Critical
Publication of JP3062541B2 publication Critical patent/JP3062541B2/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

Description

【発明の詳細な説明】DETAILED DESCRIPTION OF THE INVENTION

【0001】[0001]

【産業上の利用分野】この発明は、締固め杭を貫入して
先端支持力を増強する高耐力場所打ちコンクリート杭の
施工法における前記締固め杭のガイドパイプを、構真柱
に利用して各地下階躯体を支持せしめ逆打ち工法を進め
る高耐力場所打ちコンクリート杭応用の逆打ち工法に関
する。
BACKGROUND OF THE INVENTION The present invention relates to a method of constructing a high-strength cast-in-place concrete pile that penetrates a compacted pile to enhance the supporting capacity at the tip, and uses the guide pipe of the compacted pile as a straight pillar. The present invention relates to a back-casting method using a high-strength cast-in-place concrete pile that supports each basement building and promotes a back-casting method.

【0002】[0002]

【従来の技術】従来、逆打ち工法は広く実施されてい
る。当該工法においては、一般的に構真柱を予め施工す
ることも広く実施されている。一方、ガイドパイプを利
用して締固め杭を支持地盤中に貫入し支持地盤を締め固
める高耐力場所打ちコンクリート杭の施工方法も広く実
施され公知である(特開昭63−312419号公報な
ど参照)。
2. Description of the Related Art Conventionally, a reverse driving method has been widely practiced. In this construction method, generally, pre-construction of a timber pillar is widely practiced. On the other hand, a method of constructing a high-strength cast-in-place concrete pile that uses a guide pipe to penetrate a compaction pile into a supporting ground and compact the supporting ground is widely implemented and known (see Japanese Patent Application Laid-Open No. 63-324419, etc.). ).

【0003】[0003]

【本発明が解決しようとする課題】逆打ち工法は、山止
めの切梁を省くことができて工期を短縮でき、しかも作
業場を全天候型環境にでき施工性、安全性の高い優れた
工法である。この逆打ち工法においても、その支持杭を
支持地盤の支持力を増強した高耐力場所打ちコンクリー
ト杭として施工することが望まれ、高耐力場所打ちコン
クリート杭を逆打ち工法に応用することが提案されてい
る。その場合、高耐力場所打ちコンクリート杭の施工に
おいて、締固め杭の貫入に使用されるガイドパイプを構
真柱として併用することに着眼した。
[Problems to be solved by the present invention] The reverse striking method is an excellent construction method which can eliminate the beam of the pier and can shorten the construction period, and can make the workplace an all-weather environment, and has high workability and safety. is there. In this method, it is desired that the supporting pile be constructed as a high-strength cast-in-place concrete pile with enhanced support of the supporting ground, and it is proposed to apply the high-strength cast-in-place concrete pile to the reverse-casting method. ing. In this case, in the construction of high-strength cast-in-place concrete piles, we focused on using a guide pipe used for the penetration of compacted piles as a straight pillar.

【0004】したがって、本発明の目的は、高耐力場所
打ちコンクリート杭の施工に使用されるガイドパイプを
逆打ち工法に応用することでガイドパイプの多機能化を
図って施工性を高め、しかも経済的に実施できる高耐力
場所打ちコンクリート杭応用の逆打ち工法を提供するこ
とにある。
Accordingly, an object of the present invention is to apply a guide pipe used for construction of a high-strength cast-in-place concrete pile to a reverse-casting method so as to increase the functionality of the guide pipe and improve workability, and furthermore, it is economical. It is an object of the present invention to provide a method of applying a high strength reinforced cast-in-place concrete pile which can be implemented in a concrete manner.

【0005】[0005]

【課題を解決するための手段】上記従来技術の課題を解
決するための手段として、この発明に係る高耐力場所打
ちコンクリート杭応用の逆打ち工法は、図面に実施例を
示したとおり、地上レベルから下向きに地下各階の躯体
を構築する逆打ち工法において、逆打ち工法の施工に先
行して、地上からガイドパイプ1を利用して支持地盤中
に締固め杭2を貫入し支持地盤を締め固めた高耐力場所
打ちコンクリート杭を施工し、前記ガイドパイプ1を構
真柱とし、地盤の掘削の進捗に従い、前記構真柱(ガイ
ドパイプ)1に各地下階躯体を支持せしめて逆打ち工法
の施工を進めることを特徴とする。
As a means for solving the above-mentioned problems of the prior art, a reverse-casting method using a high-strength cast-in-place concrete pile according to the present invention is, as shown in the embodiment in the drawings, at a ground level. In the reverse construction method of constructing the skeleton of each basement floor downward from below, prior to the construction of the reverse construction method, compaction pile 2 is penetrated into support ground using guide pipe 1 from the ground and compacted support ground A high-strength cast-in-place concrete pile is constructed, and the guide pipe 1 is used as a straight pillar. In accordance with the progress of excavation of the ground, the straight pillar (guide pipe) 1 is used to support each underground floor skeleton, and the reverse casting method is used. It is characterized by proceeding with construction.

【0006】[0006]

【作用】ガイドパイプ1により支持地盤中に締固め杭2
を貫入し支持地盤を締め固めた高耐力場所打ちコンクリ
ート杭を施工し、前記ガイドパイプ1をそのまま構真柱
として利用するのでガイドパイプを有効に活用でき、地
下各階の躯体の構築のたびに、わざわざ構真柱を用意し
て設置する必要もなく、容易に迅速に先端支持力が増強
された各地下階躯体を構築することができる(図1)。
[Function] Compaction pile 2 in support ground by guide pipe 1
A high-strength cast-in-place concrete pile that penetrates the support ground is constructed and the guide pipe 1 is used as it is as a straight pillar, so that the guide pipe can be effectively used, and every time a skeleton is constructed on each basement floor, There is no need to specially prepare and install tall pillars, and it is possible to easily and quickly construct each basement skeletal structure with an increased tip support capacity (FIG. 1).

【0007】地盤の掘削の進捗に従い、構真柱たるガイ
ドパイプ1に取付けられたガセットプレート4などに各
地下階躯体を支持せしめて施工する方法であるから、各
地下階躯体の構築の迅速化が図られる。
In accordance with the progress of excavation of the ground, each underground structure is supported by a gusset plate 4 or the like attached to the guide pipe 1, which is a straight pillar, so that the construction of each underground structure is accelerated. Is achieved.

【0008】[0008]

【実施例】次に、図示した本発明の実施例を説明する。
図1は、本発明の高耐力場所打ちコンクリート杭応用の
逆打ち工法によって完成された地下躯体の枢要図を示し
ている。まず、逆打ち工法の施工に先行して、地上レベ
ルから下向きに高耐力場所打ちコンクリート杭の施工を
行う。高耐力場所打ちコンクリート杭の施工は、例えば
特開昭63−312419号に係る施工方法などによ
り、地上からガイドパイプ1を利用して支持地盤中に締
固め杭2を貫入して支持地盤を締固め、支持地盤先端か
ら地中梁33のレベルまで杭躯体のコンクリートを打設
することによって行なう。なお、ガイドパイプ1を構真
柱として利用する前提条件として、高耐力場所打ちコン
クリート杭は建物の構真柱の位置に施工される。また、
ガイドパイプ1は、地上レベルから締固め杭2を支持地
盤中へ貫入する用途上、地上レベルから支持地盤に届く
長さ(図中hで示した部分)とされ、構真柱としての使
用に耐え得るように、例えば約12mm以上の肉厚のも
のが使用される。また、締固め杭2を杭の横断面に平均
的な配置で複数貫入するため、ガイドパイプ1はコネク
タ5などで一体的に拘束した複数本のパイプの集合体と
される。コネクタ5は、構真柱の範囲を肉厚コネクタ5
Aで形成し(図2A参照)、ガイドパイプとしての用途
に限られる範囲のものは図3に示したような経済的な薄
肉コネクタ5Bで形成されている。このガイドパイプ1
の外周面には、各地下階の大梁(鉄骨)3を架ける位置
毎に、ガセットプレート4が大梁3の方向に突き出る配
置で設置されている。
BRIEF DESCRIPTION OF THE DRAWINGS FIG.
FIG. 1 shows a pivotal view of an underground skeleton completed by a reverse-casting method using a high-strength cast-in-place concrete pile according to the present invention. First, prior to the construction of the reverse-casting method, construction of a high-strength cast-in-place concrete pile is performed downward from the ground level. For the construction of a high-strength cast-in-place concrete pile, for example, by using a construction method according to Japanese Patent Application Laid-Open No. 63-321419, the compaction pile 2 is inserted into the support ground using the guide pipe 1 from the ground, and the support ground is compacted. This is carried out by hardening and placing concrete of the pile body from the tip of the supporting ground to the level of the underground beam 33. As a precondition for using the guide pipe 1 as a straight pillar, a high strength cast-in-place concrete pile is installed at the position of the straight pillar of the building. Also,
The guide pipe 1 has a length (portion indicated by h in the figure) reaching the support ground from the ground level for the purpose of penetrating the compaction pile 2 into the support ground from the ground level, and is used as a straight pillar. A material having a wall thickness of, for example, about 12 mm or more is used so as to endure. In addition, since a plurality of compacted piles 2 penetrate into the cross section of the piles in an average arrangement, the guide pipe 1 is an aggregate of a plurality of pipes integrally restricted by a connector 5 or the like. The connector 5 has a thick pillar 5
A (see FIG. 2A), and the range limited to use as a guide pipe is formed by an economical thin-walled connector 5B as shown in FIG. This guide pipe 1
A gusset plate 4 is installed on the outer peripheral surface of the base member in such a manner that the gusset plate 4 protrudes in the direction of the girder 3 at each position where the girder (steel frame) 3 of each basement is hung.

【0009】高耐力場所打ちコンクリート杭が施工され
た後に、締固め杭2の貫入用に使用した前記ガイドパイ
プ1を構真柱として利用する逆打ち工法の施工を進め
る。すなわち、地盤の掘削の進捗に従い、まず1階床を
構築できるまで掘削が進むと、ガイドパイプ1の上端に
地上の鉄骨柱8を接合して建てる。また、構真柱たるガ
イドパイプ1のガセットプレート4…には、各地下階の
大梁3…をピン接合し(図2A)各地下階躯体を支持せ
しめて施工を進めていき、地下躯体を完成する。なお、
構真柱として有効な部分は、地中梁33の数mほど下の
部分から、ガイドパイプ1の上端まで(図中iで示した
部分)である。
After the high-strength cast-in-place concrete pile is constructed, the construction of the reverse-casting method using the guide pipe 1 used for the penetration of the compacted pile 2 as a straight pillar is advanced. That is, according to the progress of the excavation of the ground, when the excavation first proceeds until the first floor can be constructed, the steel pipe 8 on the ground is joined to the upper end of the guide pipe 1 and built. Also, the trussed pillars 4 of the guide pipe 1 are joined to the girders 3 of each basement by means of pins (Fig. 2A) to support each basement structure and proceed with the construction to complete the basement structure. I do. In addition,
The portion effective as a straight pillar is from a portion several meters below the underground beam 33 to the upper end of the guide pipe 1 (portion indicated by i in the figure).

【0010】締固め杭貫入用に使用した後に不要となっ
たガイドパイプ1を構真柱として有効に利用するので、
各地下階躯体の構築の際にわざわざ構真柱を設置する必
要がなく、容易に迅速にしかも経済的に先端支持力が増
強された各地下階躯体を構築できるのである。
[0010] Since the guide pipe 1 which is no longer necessary after being used for penetrating the compacted pile is effectively used as a straight pillar,
There is no need to install tall pillars when constructing each basement, and each basement can be easily, quickly, and economically constructed with an enhanced support capacity at the tip.

【0011】[0011]

【異なる実施態様】図2A〜Dは、複数本のガイドパイ
プ1を一体化して1本の構真柱となす場合の実施態様を
示している。支持杭7の横断面に略均等に配置された複
数本のガイドパイプ1…が、コネクタ5等によって相互
に強固に拘束した構成とされており、締固め杭2の貫入
と、構真柱としての使用に全く支障がない。
FIGS. 2A to 2D show an embodiment in which a plurality of guide pipes 1 are integrated into a single straight pillar. A plurality of guide pipes 1... Arranged approximately evenly on the cross section of the support pile 7 are firmly restrained to each other by the connector 5 and the like. There is no problem in the use of.

【0012】図2A〜Cは、4本のガイドパイプ1…を
十字鉄骨のコネクタ5(5A)や鉄筋6によって相互に
拘束した場合を示しており、図2Dは、3本のガイドパ
イプ1…を鉄骨5’で拘束する場合を示している。な
お、構真柱たるガイドパイプ1の横断面形状は、締固め
杭2の貫入に際し、重心位置がずれないものであればよ
く、通常の円形状のほか、図2Cに示した正方形状や、
図示を省略した三角形状等の正多角形などに形成されて
いる。
2A to 2C show a case in which four guide pipes 1 are mutually restrained by a cross-steel connector 5 (5A) or a reinforcing bar 6, and FIG. 2D shows three guide pipes 1. Is restricted by a steel frame 5 ′. In addition, the cross-sectional shape of the guide pipe 1 which is a straight pillar may be any shape as long as the position of the center of gravity does not shift when the compaction pile 2 penetrates, and in addition to the usual circular shape, the square shape shown in FIG.
It is formed in a regular polygon such as a triangular shape not shown.

【0013】[0013]

【本発明が奏する効果】本発明に係る高耐力場所打ちコ
ンクリート杭応用の逆打ち工法によれば、建物の支持杭
を高耐力場所打ちコンクリート杭として施工できる上
に、そのガイドパイプ1を構真柱に利用して各地下階躯
体が容易迅速に施工されるので、構真柱の施工を省略で
きる分だけ大幅な工費の低減化が図れると共に、作業効
率が高められ、施工性、信頼性に優れた地下躯体の構築
に寄与する。
[Effects of the present invention] According to the reverse-casting method using a high-strength cast-in-place concrete pile according to the present invention, a support pile of a building can be constructed as a high-strength cast-in-place concrete pile, and the guide pipe 1 can be used in place. Each basement is easily and quickly constructed by using it as a pillar, so the construction cost can be greatly reduced because the construction of a straight pillar can be omitted, and the work efficiency can be increased, improving workability and reliability. Contributes to the construction of an excellent underground structure.

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

【図1】本発明の枢要な施工方法を示した断面図であ
る。
FIG. 1 is a cross-sectional view showing a key construction method of the present invention.

【図2】異なる実施態様を示した断面図である。FIG. 2 is a sectional view showing a different embodiment.

【図3】支持杭の断面図である。FIG. 3 is a sectional view of a support pile.

【符号の説明】[Explanation of symbols]

1 ガイドパイプ 2 締固め杭 1 Guide pipe 2 Compaction pile

フロントページの続き (72)発明者 土屋 富男 東京都江東区南砂二丁目5番14号 株式 会社竹中工務店技術研究所内 (72)発明者 山田 毅 東京都江東区南砂二丁目5番14号 株式 会社竹中工務店技術研究所内 (72)発明者 福原 拓平 東京都中央区銀座8丁目21番1号 株式 会社竹中土木 技術開発本部内 (56)参考文献 特開 平4−85419(JP,A) 特開 平2−100225(JP,A) (58)調査した分野(Int.Cl.7,DB名) E02D 29/045 - 29/055 Continued on front page (72) Inventor Tomio Tsuchiya 2-5-1-14 Minamisuna, Koto-ku, Tokyo Inside Takenaka Corporation Technical Research Institute (72) Inventor Takeshi Yamada 2-5-1-14 Minamisuna, Koto-ku, Tokyo Stock Company Takenaka Corporation Technical Research Institute (72) Inventor Takuhei Fukuhara 8-21-1, Ginza, Chuo-ku, Tokyo Inside Takenaka Public Works Technology Development Division (56) References JP-A-4-85419 (JP, A) Kaihei 2-100225 (JP, A) (58) Field surveyed (Int. Cl. 7 , DB name) E02D 29/045-29/055

Claims (1)

(57)【特許請求の範囲】(57) [Claims] 【請求項1】 地上レベルから下向きに地下各階の躯体
を構築する逆打ち工法において、 逆打ち工法の施工に先行して、地上からガイドパイプを
利用して支持地盤中に締固め杭を貫入し支持地盤を締め
固めた高耐力場所打ちコンクリート杭を施工し、前記ガ
イドパイプを構真柱とし、地盤の掘削の進捗に従い、前
記構真柱に各地下階躯体を支持せしめて逆打ち工法の施
工を進めることを特徴とする高耐力場所打ちコンクリー
ト杭応用の逆打ち工法。
Claims: 1. In a reverse construction method for constructing a frame of each basement floor from the ground level downward, prior to the construction of the reverse construction method, a compacted pile is penetrated into a supporting ground using a guide pipe from the ground. Construction of a high-strength cast-in-place concrete pile with compacted supporting ground, using the guide pipe as a straight pillar, and supporting each underground floor frame on the straight pillar according to the progress of excavation of the ground, constructing a reverse-casting method A reverse-casting method using high-strength cast-in-place concrete piles.
JP4116145A 1992-05-08 1992-05-08 Reverse construction method applied to high strength cast-in-place concrete pile Expired - Fee Related JP3062541B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP4116145A JP3062541B2 (en) 1992-05-08 1992-05-08 Reverse construction method applied to high strength cast-in-place concrete pile

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP4116145A JP3062541B2 (en) 1992-05-08 1992-05-08 Reverse construction method applied to high strength cast-in-place concrete pile

Publications (2)

Publication Number Publication Date
JPH05311683A JPH05311683A (en) 1993-11-22
JP3062541B2 true JP3062541B2 (en) 2000-07-10

Family

ID=14679864

Family Applications (1)

Application Number Title Priority Date Filing Date
JP4116145A Expired - Fee Related JP3062541B2 (en) 1992-05-08 1992-05-08 Reverse construction method applied to high strength cast-in-place concrete pile

Country Status (1)

Country Link
JP (1) JP3062541B2 (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2763488B2 (en) * 1993-12-27 1998-06-11 安藤建設株式会社 Prefabricated pillar and inverted ramen prefabricated construction method
JP6296867B2 (en) * 2014-04-08 2018-03-20 大成建設株式会社 Installation method of stratified settlement meter and stratified settlement measurement system

Also Published As

Publication number Publication date
JPH05311683A (en) 1993-11-22

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