JP3587479B2 - Construction method of pile of underground structure using PC member for underground wall - Google Patents

Construction method of pile of underground structure using PC member for underground wall Download PDF

Info

Publication number
JP3587479B2
JP3587479B2 JP16725095A JP16725095A JP3587479B2 JP 3587479 B2 JP3587479 B2 JP 3587479B2 JP 16725095 A JP16725095 A JP 16725095A JP 16725095 A JP16725095 A JP 16725095A JP 3587479 B2 JP3587479 B2 JP 3587479B2
Authority
JP
Japan
Prior art keywords
wall
pile
underground
view
sectional
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
JP16725095A
Other languages
Japanese (ja)
Other versions
JPH09165766A (en
Inventor
伸行 中西
康人 小林
良春 飯田
照夫 菅
潤一 村田
愛雄 渡部
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.)
JFE Engineering Corp
Tokyu Construction Co Ltd
Mitani Sekisan Co Ltd
Original Assignee
JFE Engineering Corp
Tokyu Construction Co Ltd
Mitani Sekisan Co Ltd
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 JFE Engineering Corp, Tokyu Construction Co Ltd, Mitani Sekisan Co Ltd filed Critical JFE Engineering Corp
Priority to JP16725095A priority Critical patent/JP3587479B2/en
Publication of JPH09165766A publication Critical patent/JPH09165766A/en
Application granted granted Critical
Publication of JP3587479B2 publication Critical patent/JP3587479B2/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

Images

Landscapes

  • Underground Structures, Protecting, Testing And Restoring Foundations (AREA)

Description

【0001】
【産業上の利用分野】
この発明は、地下壁用PC部材を利用した地下構造物の杭の施工法に関するものである。
【0002】
【従来の技術】
従来の地下工法として、杭工事の後に地下躯体の工事を行なっている。例えば、杭の打ち込み後に、山留めを仮設材を用いて施工し、根切り完了後に現場にて地下躯体の鉄筋と型枠を組み、コンクリートを打ち、鉄筋コンクリート構造物を構築するものがある。
【0003】
この地下工法の一例を、図19乃至図24に示す。即ち、杭孔100を所定深さまで掘削し、杭101を打ち込み、まず杭の施工を行なう(図19)。次に、杭101の外周にシートパイル102を打設する(図20)。そして、シートパイル102の内側の根切りを行なう。一次根切りL1を行ない、第一段切梁104の施工を行なう。次に、二次根切りL2、第二段切梁105の施工を行ない、以下、順次これを繰り返し、床付面まで根切りする(図21)。
【0004】
根切り後、底盤部106の施工を行ない、最下段(図22では第三段)切梁の撤去を行ない、地下躯体の第1立上り107の施工を行ない、第二段切梁105の撤去を行なう。そして、第2立上り108の施工を行ない、第一段切梁104及び支柱103の撤去を行なう(図23)。最後に、最終立上り109の施工を行ない、シートパイル102を撤去し、床梁110の施工を行なう(図24)。
【0005】
【発明が解決しようとする課題】
このような地下工法では、地下躯体の工事を杭工事より先行することができず、PC地下躯体の必要な位置に杭を精度良く納めることができないことがある。
【0006】
この発明は、かかる点に鑑みてなされたもので、杭工事を地下躯体工事の後に行なうことを可能とする地下壁用PC部材を利用した地下構造物の杭の施工法を提供することを目的としている。
【0007】
【課題を解決するための手段】
前記課題を解決し、かつ目的を達成するために、請求項1記載の発明の地下壁用PC部材を利用した地下構造物の杭の施工法は、壁部と、この壁部の両側端に付設された杭施工用スペースを有する柱状の鉛直接合部と、基礎梁部とから構成される地下壁用PC部材をPC壁孔に建入れ、前記杭施工用スペースに杭打機の掘削用オーガを挿入して杭孔を掘削し、その後杭を打ち込むことを特徴としている。
【0008】
【作用】
請求項1記載の発明では、地下壁用PC部材をPC壁孔に建入れて、地下壁用PC部材の杭施工用スペースに杭打機の掘削用オーガを挿入して杭孔を掘削し、その後杭を打ち込むことにより、杭工事を地下躯体工事の後に行なう。
【0009】
【実施例】
以下、この発明の地下壁用PC部材を利用した地下構造物の杭の施工法の実施例を説明する。
【0010】
まず、図1の地下壁用PC部材について説明する。図1(a)は地下壁用PC部材の斜視図、図1(b)は地下壁用PC部材の側面図、図1(c)は地下壁用PC部材の平面図、図1(d)は地下壁用PC部材の基礎梁部の断面図である。
【0011】
地下壁用PC部材1は、壁部1aと、この壁部1aの両側端に設けられた鉛直接合部1bと、基礎梁部1cとを有している。
【0012】
鉛直接合部1bは杭施工用スペース1eを有する柱状に形成され、この杭施工用スペース1eは鉛直接合部1bに半円形の溝部1fにより形成されている。また、基礎梁部1cには柱状の鉛直接合部1bの地下構造物側に欠き込み1gを設けており、この欠き込み1gは半円形の溝部1fに連通する凹部1hにより形成されている。さらに、基礎梁部1cには主筋50が配筋されている。この地下壁用PC部材1は地下壁の一般部に用いられる部材である。
【0013】
次に、図2の地下壁用PC部材について説明する。図2(a)は地下壁用PC部材の斜視図、図2(b)は地下壁用PC部材の側面図、図2(c)は地下壁用PC部材の平面図、図2(d)は地下壁用PC部材の基礎梁部の断面図である。
【0014】
地下壁用PC部材2は、壁部2aと、この壁部2aの両側端に設けられた鉛直接合部2bと、基礎梁部2cとを有している。
【0015】
鉛直接合部2bは杭施工用スペース2eを有する柱状に形成され、この杭施工用スペース2eは鉛直接合部2bに半円形の溝部2fにより形成されている。また、基礎梁部2cには一方の柱状の鉛直接合部2bの地下構造物側に欠き込み2gを有しており、この欠き込み2gは半円形の溝部2fに連通する凹部2hにより形成されている。さらに、基礎梁部2cには主筋51が配筋されている。この地下壁用PC部材2は地下壁の隅角部に用いられる部材である。
【0016】
次に、図3の地下壁用PC部材について説明する。図3(a)は地下壁用PC部材の斜視図、図3(b)は地下壁用PC部材の側面図、図3(c)は地下壁用PC部材の平面図、図3(d)は地下壁用PC部材の基礎梁部の断面図である。
【0017】
地下壁用PC部材3は、壁部3aと、この壁部3aの両側端に設けられた鉛直接合部3bと、基礎梁部3cとを有している。
【0018】
鉛直接合部3bは杭施工用スペース3eを有する柱状に形成され、この杭施工用スペース3eは鉛直接合部3bに半円形の溝部3fにより形成されている。また、基礎梁部3cには一方の柱状の鉛直接合部3bの地下構造物側に欠き込み3gを有しており、この欠き込み3gは半円形の溝部3fに連通する凹部3hにより形成されている。さらに、基礎梁部3cには主筋52が配筋されている。この地下壁用PC部材3は地下壁の隅角部に用いられる部材であり、図2に示す地下壁用PC部材2と接合される。
【0019】
次に、図1乃至図3に示す地下壁用PC部材を利用した地下構造物の杭の施工法について説明する。
【0020】
図4はPC壁孔の掘削工程を示し、地下壁用PC部材を建入れるためのPC壁孔10を掘削する。
【0021】
図5は地下壁用PC部材の建入れ根固め工程を示し、PC壁孔10に、図1の地下壁用PC部材1を建入れて根固めを行なう。根固めは、トレミー管12からコンクリート14を注入して地下壁用PC部材1の高さを調整する。地下壁用PC部材1を建入れて根固めをした後に、トレミー管12を外して、次のPC壁孔10を掘削する。
【0022】
図6は杭の施工工程を示し、図4のPC壁孔の掘削工程、図5の地下壁用PC部材の建入れ根固め工程を繰り返して、図1の地下壁用PC部材1、図2の地下壁用PC部材2及び図3の地下壁用PC部材3を建入れて根固めを行ない、隅角部は図2の地下壁用PC部材2と図3の地下壁用PC部材3を位置させ、この両者の間に図1の地下壁用PC部材1を位置させる。
【0023】
図1の地下壁用PC部材1、図2の地下壁用PC部材2及び図3の地下壁用PC部材3の杭施工用スペースにより形成される孔に、図示しない杭打機の掘削用オーガを挿入して杭孔60を掘削し、その後杭15をその頭部を基礎梁部下端、即ち地下構造物の所定位置まで打ち込む。このように、杭15の施工は、地下壁用PC部材の建入れ後、それぞれの地下壁用PC部材の杭施工用スペースを利用して行なう。
【0024】
図7は頭つなぎの施工工程を示し、剛強な頭つなぎ16を根切り全周面に設置し、この頭つなぎ16により地下壁用PC部材1,2,3の頭部をつないで一体化する。
【0025】
図8は掘削工程を示し、剛強な頭つなぎ16を根切り全周面に設置し、その後地下壁内側を、現場打ち部基礎梁下端L4まで根切り17する。
【0026】
図9は基礎梁部分と鉛直接合部の施工工程を示し、根切り17を行ない、その後地下壁用PC部材1,2,3の鉛直接合部1b,2b,3bの接合用欠き込み1g,2g,3gにおいて、基礎梁部1c,2c,3cの主筋同士の接合、現場打ち部基礎梁18aの主筋の地下壁用PC部材1,2,3への定着配筋・コンクリート打設を行ない、現場打ち部基礎梁18aと底盤18bからなる底盤部18の現場打ち施工を行なう。底盤部18の施工後、地下壁用PC部材1,2,3の杭施工用スペース内に現場打ちコンクリート20を打設して鉛直接合の施工を行なう。
【0027】
この図4乃至図9に示す地下壁用PC部材を利用した地下構造物の杭の施工法によって、図10乃至図15に示す地下構造物が施工され、図10は地下構造物の縦断面図、図11は図10のXI−XI線に沿う断面図、図12は地下壁用PC部材の接合状態を示す断面図、図13は地下壁用PC部材の接合用欠き込みにおける主筋の接合状態を示す断面図、図14は図11のXIV−XIV線に沿う断面図、図15は図11のXV−XV線に沿う断面図である。
【0028】
地下構造物30は、PC壁孔に建入れた地下壁用PC部材1,2,3と、この地下壁用PC部材1,2,3の杭施工用スペースを利用して打ち込まれた杭15と、地下壁用PC部材1,2,3の頭部同士をつないで一体化する剛強な頭つなぎ16と、鉛直接合部の接合用欠き込みにおいて基礎梁部の主筋同士の接合、現場打ち部基礎梁18aの主筋の地下壁用PC部材1,2,3への定着配筋・コンクリート打設を行ない、現場打ちにより施工された底盤部18とを有し、地下壁用PC部材1,2,3の杭施工用スペース内にコンクリート20を打設することにより地下壁用PC部材1,2,3同士を一体化している。
【0029】
地下壁用PC部材1,2の基礎梁接合部分22は、図13及び図14に示すように、地下壁用PC部材1と、地下壁用PC部材2とに形成された鉛直接合部1b,2bの接合用欠き込み1g,2gにおいて、杭15の頭部に配筋70を配置し、底盤部18の現場打ち部基礎梁18aの主筋27,28を配筋し、その後、地下壁用PC部材1,2に配置された主筋50,51を鉄筋23を介して溶接等により接合するとともに、あばら筋26の配筋を行なう。さらに、底盤部18の現場打ち部基礎梁18aや底盤18bの配筋を行ない、コンクリート21の打設を行ない、底盤部18の現場打ち施工を完了する。
【0030】
底盤部18の施工後に、地下壁用PC部材1,2の杭施工用スペース1e,2eにコンクリート20を現場打ちし、地下壁用PC部材1,2の鉛直接合の施工を行なう。
【0031】
また、地下壁用PC部材1,1の基礎梁接合部分は同様に構成することができるので説明を省略する。さらに、地下壁用PC部材2,3の基礎梁接合部分は現場打ち部基礎梁18aの配筋がない等が異なるがほぼ同様に構成することができるので説明を省略する。
【0032】
また、地下壁用PC部材1,2,3の他の実施例として、図16乃至図18に示すようなものがあり、図16は地下壁用PC部材の接合状態を示す断面図、図17は地下壁用PC部材の接合状態を示す基礎梁部分の断面図、図18は図16のXVIII−XVIII線に沿う断面図である。
【0033】
この実施例の地下壁用PC部材1,2,3は、前記の実施例と同様に構成されるが、地下壁用PC部材1,2,3の柱状の鉛直接合部1b,2b,3bの幅t1,t2,t3が狭く形成され、鉛直接合部1b,2b,3bに形成された杭施工用スペース1e,2e,3eも小さくなっており、PC壁孔の掘削量が少なくなる。地下構造物30の中間部の地下壁用PC部材1,2の杭施工用スペース1e,2e、地下壁用PC部材1,3の杭施工用スペース1e,3e、地下壁用PC部材1,1の杭施工用スペース1e,1eには、杭15が地下構造物の内側に打ち込まれる。
【0034】
この実施例の地下壁用PC部材1,2は、図18に示すように前記実施例と同様に接合され、さらに地下壁用PC部材1,1の基礎梁接合部も、同様に構成することができるので説明を省略する。さらに、地下壁用PC部材2,3の基礎梁接合部分は現場打ち部基礎梁18aの配筋がない等が異なるがほぼ同様に構成することができるので説明を省略する。
【0035】
この発明では、単なる平板状のPC部材と比べて、地下壁用PC部材1〜3同士の鉛直接合部1b〜3bを柱状とすることにより、▲1▼杭施工用スペース1e〜3eを大きくすることができるため、大きな径の杭15の施工が可能となり、所要杭径を所要本数だけ効率よく設計・施工できる。また、▲2▼柱とすることができるため、基礎梁を設けて、ラーメン構造を構成でき、土圧・水圧、地震力等の荷重に対しての壁、底盤の設計において、その壁厚や底盤厚を薄くできる。さらに、▲3▼地下壁用PC部材1〜3同士の鉛直接合部1b〜3bが大きくなるため、杭施工用スペース1e〜3e内への補強筋の配筋やコンクリート打設が容易となり、品質管理上良い。また、▲4▼鉛直接合部1b〜3bの接合用欠き込み1g〜3gを設けることができ、地下壁用PC部材1〜3と現場打ち部基礎梁の主筋の定着配筋が容易である。
【0036】
【発明の効果】
前記したように、請求項1記載の発明は、地下壁用PC部材をPC壁孔に建入れて、地下壁用PC部材の杭施工用スペースに杭打機の掘削用オーガを挿入して杭孔を掘削し、その後杭を打ち込むから、杭工事を地下躯体工事の後に行なうことが可能であり、PC地下躯体の必要な位置に杭を精度良く納められる。
【図面の簡単な説明】
【図1】地下壁用PC部材について説明する図である。
【図2】地下壁用PC部材について説明する図である。
【図3】地下壁用PC部材について説明する図である。
【図4】PC壁孔の掘削工程を示し、(a)は平面図、(b)はb−b線に沿う断面図、(c)はc−c線に沿う断面図である。
【図5】地下壁用PC部材の建入れ根固め工程を示し、(a)は平面図、(b)はb−b線に沿う断面図、(c)はc−c線に沿う断面図、(d)は拡大断面図である。
【図6】杭の施工工程を示し、(a)は平面図、(b)はb−b線に沿う断面図、(c)はc−c線に沿う断面図である。
【図7】頭つなぎの施工工程を示し、(a)は平面図、(b)はb−b線に沿う断面図、(c)はc−c線に沿う断面図である。
【図8】掘削工程を示し、(a)は平面図、(b)はb−b線に沿う断面図、(c)はc−c線に沿う断面図である。
【図9】基礎梁部分と鉛直接合部の施工工程を示し、(a)は平面図、(b)はb−b線に沿う断面図、(c)はc−c線に沿う断面図である。
【図10】地下構造物の縦断面図である。
【図11】図10のXI−XI線に沿う断面図である。
【図12】地下壁用PC部材の接合状態を示す断面図である。
【図13】地下壁用PC部材の接合用欠き込みにおける主筋の接合状態を示す断面図である。
【図14】図11のXIV−XIV線に沿う断面図である。
【図15】図11のXV−XV線に沿う断面図である。
【図16】地下壁用PC部材の接合状態を示す断面図である。
【図17】地下壁用PC部材の接合状態を示す基礎梁部分の断面図である。
【図18】図16のXVIII−XVIII線に沿う断面図である。
【図19】従来の杭の施工を示し、(a)は平面図、(b)はb−b線に沿う断面図、(c)はc−c線に沿う断面図である。
【図20】従来のシートパイルの打設を示し、(a)は平面図、(b)はb−b線に沿う断面図、(c)はc−c線に沿う断面図である。
【図21】従来の根切り及び腹起し、切梁の施工を示し、(a)は平面図、(b)はb−b線に沿う断面図、(c)はc−c線に沿う断面図である。
【図22】従来の底盤部の施工、第1立上りの施工及び第二段切梁の撤去を示し、(a)は平面図、(b)はb−b線に沿う断面図、(c)はc−c線に沿う断面図である。
【図23】従来の第2立上りの施工及び第一段切梁の撤去を示し、(a)は平面図、(b)はb−b線に沿う断面図、(c)はc−c線に沿う断面図である。
【図24】最終立上りの施工、シートパイルの撤去、床梁の施工を示し、(a)は平面図、(b)はb−b線に沿う断面図、(c)はc−c線に沿う断面図である。
【符号の説明】
1,2,3 地下壁用PC部材
1a,2a,3a 壁部
1b,2b,3b 鉛直接合部
1e,2e,3e 杭施工用スペース
10 PC壁孔
15 杭
[0001]
[Industrial applications]
The present invention relates to a method for constructing a pile of an underground structure using an underground wall PC member.
[0002]
[Prior art]
As a conventional underground construction method, construction of an underground skeleton is performed after pile construction. For example, there is a method of constructing a reinforced concrete structure by driving a pile after driving a pile, using a temporary material, constructing a reinforcement with an underground skeleton and formwork at the site after completion of rooting, and then driving concrete.
[0003]
One example of this underground construction method is shown in FIGS. That is, the pile hole 100 is excavated to a predetermined depth, the pile 101 is driven, and the pile is first constructed (FIG. 19). Next, a sheet pile 102 is cast on the outer periphery of the pile 101 (FIG. 20). Then, root cutting inside the sheet pile 102 is performed. The primary root cutting L1 is performed, and the first stage cutting beam 104 is constructed. Next, the secondary root cutting L2 and the second stage cutting beam 105 are constructed, and thereafter, this is sequentially repeated, and the root is cut to the floor surface (FIG. 21).
[0004]
After the root cutting, the bottom 106 is constructed, the bottom (third stage in FIG. 22) cutting beam is removed, the first rising 107 of the underground skeleton is constructed, and the second stage cutting beam 105 is removed. Do. Then, the second rising 108 is carried out, and the first-stage beam 104 and the pillar 103 are removed (FIG. 23). Finally, construction of the final rise 109 is performed, the sheet pile 102 is removed, and construction of the floor beam 110 is performed (FIG. 24).
[0005]
[Problems to be solved by the invention]
In such an underground construction method, the construction of the underground skeleton cannot precede the pile construction, and the pile may not be accurately placed at a required position of the PC underground skeleton.
[0006]
The present invention has been made in view of the above point, and an object of the present invention is to provide a method of constructing a pile of an underground structure using a PC member for an underground wall, which enables the pile construction to be performed after the underground skeleton construction. And
[0007]
[Means for Solving the Problems]
In order to solve the above-mentioned problem and to achieve the object, a method for constructing a pile of an underground structure using the PC member for an underground wall according to the invention of claim 1 includes a method for constructing a pile on a wall and both ends of the wall. An underground wall PC member composed of a columnar vertical joint having an attached pile construction space and a foundation beam is installed in a PC wall hole, and an excavation auger for a pile driver is placed in the pile construction space. And excavation of the pile hole, and then driving the pile.
[0008]
[Action]
In the invention according to claim 1, a PC member for an underground wall is erected in a PC hole, and an auger for excavation of a pile driver is inserted into a space for pile construction of the PC member for an underground wall to excavate a pile hole. After that, piles are driven into the piles after the underground framing work.
[0009]
【Example】
Hereinafter, an embodiment of a method of constructing a pile of an underground structure using the PC member for an underground wall according to the present invention will be described.
[0010]
First, the PC member for basement wall in FIG. 1 will be described. 1A is a perspective view of the basement wall PC member, FIG. 1B is a side view of the basement wall PC member, FIG. 1C is a plan view of the basement wall PC member, and FIG. FIG. 4 is a sectional view of a foundation beam portion of the PC member for underground wall.
[0011]
The basement-wall PC member 1 has a wall 1a, vertical joints 1b provided on both side ends of the wall 1a, and a foundation beam 1c.
[0012]
The vertical joint 1b is formed in a column shape having a space 1e for pile construction, and the space 1e for pile construction is formed by a semicircular groove 1f in the vertical joint 1b. The base beam 1c is provided with a notch 1g on the underground structure side of the columnar vertical joint 1b, and the notch 1g is formed by a recess 1h communicating with the semicircular groove 1f. Further, a main bar 50 is arranged on the foundation beam 1c. The PC member 1 for an underground wall is a member used for a general portion of an underground wall.
[0013]
Next, the PC member for basement wall in FIG. 2 will be described. 2A is a perspective view of the basement wall PC member, FIG. 2B is a side view of the basement wall PC member, FIG. 2C is a plan view of the basement wall PC member, and FIG. FIG. 4 is a sectional view of a foundation beam portion of the PC member for underground wall.
[0014]
The basement wall PC member 2 includes a wall 2a, vertical joints 2b provided on both side ends of the wall 2a, and a foundation beam 2c.
[0015]
The vertical joint 2b is formed in a column shape having a space 2e for pile construction, and the space 2e for pile construction is formed by a semicircular groove 2f in the vertical joint 2b. The base beam 2c has a notch 2g on the underground structure side of one of the columnar vertical joints 2b. The notch 2g is formed by a recess 2h communicating with the semicircular groove 2f. I have. Further, a main bar 51 is arranged on the foundation beam 2c. The basement wall PC member 2 is a member used at a corner of the basement wall.
[0016]
Next, the PC member for basement wall in FIG. 3 will be described. 3A is a perspective view of the basement wall PC member, FIG. 3B is a side view of the basement wall PC member, FIG. 3C is a plan view of the basement wall PC member, and FIG. FIG. 4 is a sectional view of a foundation beam portion of the PC member for underground wall.
[0017]
The basement wall PC member 3 has a wall 3a, vertical joints 3b provided on both side ends of the wall 3a, and a foundation beam 3c.
[0018]
The vertical joint 3b is formed in a column shape having a space 3e for pile construction, and the space 3e for pile construction is formed by a semicircular groove 3f in the vertical joint 3b. In addition, the foundation beam 3c has a notch 3g on the underground structure side of one of the columnar vertical joints 3b, and the notch 3g is formed by a recess 3h communicating with the semicircular groove 3f. I have. Further, a main bar 52 is arranged on the foundation beam 3c. The PC member 3 for basement wall is a member used at a corner of the basement wall, and is joined to the PC member 2 for basement wall shown in FIG.
[0019]
Next, a method for constructing a pile of an underground structure using the underground wall PC member shown in FIGS. 1 to 3 will be described.
[0020]
FIG. 4 shows a process of excavating a PC wall hole, in which a PC wall hole 10 for laying an underground wall PC member is excavated.
[0021]
FIG. 5 shows a step of laying and fixing the PC member for basement wall. The PC member 1 for basement wall of FIG. For the consolidation, concrete 14 is poured from the tremie pipe 12 to adjust the height of the basement wall PC member 1. After the PC member 1 for the underground wall is erected and solidified, the tremee pipe 12 is removed, and the next PC wall hole 10 is excavated.
[0022]
FIG. 6 shows a pile construction process, and repeats the PC wall hole excavation process of FIG. 4 and the underground wall PC member embedding process of FIG. 5 to obtain the underground wall PC member 1 of FIG. The basement wall PC member 2 of FIG. 3 and the basement wall PC member 3 of FIG. 3 are erected and the corners are fixed, and the corner portions are the basement wall PC member 2 of FIG. 2 and the basement wall PC member 3 of FIG. The PC member 1 for the underground wall in FIG. 1 is located between the two.
[0023]
An excavator auger (not shown) is formed in a hole formed by a piling work space of the basement wall PC member 1 of FIG. 1, the basement wall PC member 2 of FIG. 2, and the basement wall PC member 3 of FIG. Then, the pile hole 60 is excavated, and then the pile 15 is driven into the bottom of the foundation beam, that is, the predetermined position of the underground structure. As described above, the pile 15 is constructed by using the space for pile construction of each PC member for basement wall after the PC member for basement wall is installed.
[0024]
FIG. 7 shows a construction process of the head tie, in which a rigid head tie 16 is installed on the entire periphery of the root, and the head ties 16 connect and unify the heads of the PC members 1, 2, 3 for the underground wall. .
[0025]
FIG. 8 shows an excavation process, in which a rigid head tie 16 is installed on the entire periphery of the root cutting, and then the inside of the underground wall is cut 17 to the lower end L4 of the cast-in-place foundation beam.
[0026]
FIG. 9 shows a construction process of the foundation beam portion and the vertical joint portion, the root cutting 17 is performed, and then the joining portions 1g, 2g of the vertical joint portions 1b, 2b, 3b of the PC members 1, 2, 3 for the underground wall. , 3g, the main reinforcements of the foundation beams 1c, 2c, 3c are joined together, and the main reinforcements of the foundation beam 18a are fixed to the PC members 1, 2, 3 for the underground wall and concrete is cast. Site-based construction of the bottom part 18 composed of the base beam 18a and the bottom part 18b is performed. After the construction of the bottom part 18, the cast-in-place concrete 20 is poured into the space for pile construction of the PC members 1, 2, 3 for the underground wall, and the construction of the vertical joint is performed.
[0027]
The underground structure shown in FIGS. 10 to 15 is constructed by the method of constructing the pile of the underground structure using the underground wall PC member shown in FIGS. 4 to 9, and FIG. 10 is a longitudinal sectional view of the underground structure. 11, FIG. 11 is a cross-sectional view taken along the line XI-XI of FIG. 10, FIG. 12 is a cross-sectional view showing a joint state of the basement wall PC member, and FIG. 14 is a cross-sectional view taken along line XIV-XIV in FIG. 11, and FIG. 15 is a cross-sectional view taken along line XV-XV in FIG.
[0028]
The underground structure 30 includes an underground wall PC member 1, 2, 3 installed in a PC wall hole, and a pile 15 driven into the underground wall PC member 1, 2, 3 using a pile construction space. And a rigid head tie 16 that connects and integrates the heads of the basement PC members 1, 2, 3 with each other, and a joint between the main bars of the foundation beam portion at the notch for joining the vertical joint, and an in-place hitting portion The base beams 18a are fixed to the PC members 1, 2, 3 for underground walls of the main reinforcing bars, and concrete placement is carried out. , 3 are integrated with each other by placing concrete 20 in the space for pile construction.
[0029]
As shown in FIG. 13 and FIG. 14, the base beam joining portion 22 of the basement wall PC members 1 and 2 has a vertical joint 1b formed between the basement wall PC member 1 and the basement wall PC member 2. In the joining notches 1g and 2g of 2b, a reinforcing bar 70 is arranged on the head of the pile 15, and the main reinforcing bars 27 and 28 of the cast-in-place foundation beam 18a of the bottom part 18 are disposed. The main bars 50 and 51 arranged on the members 1 and 2 are joined by welding or the like via the reinforcing bar 23, and the stirrups 26 are arranged. Further, reinforcement of the cast-in-place foundation beam 18a and the base 18b of the base 18 is performed, concrete 21 is cast, and the cast-in-place construction of the base 18 is completed.
[0030]
After the construction of the bottom part 18, concrete 20 is cast in the pile construction spaces 1e and 2e of the PC members 1 and 2 for basement walls, and the PC members 1 and 2 for basement walls are joined vertically.
[0031]
In addition, since the base beam connecting portions of the PC members 1 and 1 for the underground wall can be similarly configured, the description is omitted. Further, the base beam joint portions of the basement wall PC members 2 and 3 are different in that there is no arrangement of the reinforcing beam of the cast-in-place base beam 18a.
[0032]
16 to 18 show another embodiment of the basement wall PC members 1, 2, and 3. FIG. 16 is a cross-sectional view showing a joined state of the basement wall PC members, and FIG. FIG. 18 is a cross-sectional view of a foundation beam portion showing a joint state of the basement wall PC member, and FIG. 18 is a cross-sectional view taken along line XVIII-XVIII in FIG.
[0033]
The PC members 1, 2, 3 for the underground wall of this embodiment are configured in the same manner as the above-described embodiment, except that the columnar vertical joints 1b, 2b, 3b of the PC members 1, 2, 3 for the underground wall are formed. The widths t1, t2, and t3 are formed to be narrow, and the pile working spaces 1e, 2e, and 3e formed in the vertical joints 1b, 2b, and 3b are also small, and the amount of PC wall hole excavation is reduced. Pile construction spaces 1e and 2e for underground wall PC members 1 and 2 in the middle of underground structure 30, pile construction spaces 1e and 3e for underground wall PC members 1 and 3, and underground wall PC members 1 and 1. The pile 15 is driven into the underground structure in the pile construction spaces 1e, 1e.
[0034]
As shown in FIG. 18, the PC members 1 and 2 for the underground wall of this embodiment are joined in the same manner as in the previous embodiment, and the joints of the foundation beams of the PC members 1 and 1 for the underground wall are similarly constructed. Therefore, the description is omitted. Further, the base beam joint portions of the basement wall PC members 2 and 3 are different in that there is no arrangement of the reinforcing beam of the cast-in-place base beam 18a.
[0035]
In the present invention, (1) the space 1e to 3e for pile construction is increased by making the vertical joints 1b to 3b of the PC members 1 to 3 for the underground wall into columnar shapes as compared with a simple flat plate-like PC member. Therefore, the pile 15 having a large diameter can be constructed, and the required pile diameter can be efficiently designed and constructed by the required number. In addition, since it can be a pillar, the foundation beam can be provided to form a rigid frame structure, and the wall thickness and wall thickness for the design of the wall and base against loads such as earth pressure, water pressure, seismic force, etc. Bottom board thickness can be reduced. (3) Since the vertical joints 1b to 3b between the PC members 1 to 3 for the underground wall become large, it becomes easy to arrange reinforcing bars in the pile installation spaces 1e to 3e and to put concrete, and the quality is improved. Good on management. Also, (4) notches 1g to 3g for joining the vertical joints 1b to 3b can be provided, and it is easy to fix and arrange the main reinforcing bars of the PC members 1 to 3 for the underground wall and the foundation beam at the site.
[0036]
【The invention's effect】
As described above, according to the first aspect of the present invention, a PC member for an underground wall is erected in a PC wall hole, and an excavation auger of a pile driver is inserted into a piling work space of the PC member for an underground wall. Since the hole is excavated and then the pile is driven, the pile construction can be performed after the underground skeleton construction, and the pile can be accurately placed in the required position of the PC underground skeleton.
[Brief description of the drawings]
FIG. 1 is a diagram illustrating a basement wall PC member.
FIG. 2 is a diagram illustrating a PC member for an underground wall.
FIG. 3 is a diagram illustrating a PC member for an underground wall.
4A and 4B show a process of excavating a PC wall hole, wherein FIG. 4A is a plan view, FIG. 4B is a cross-sectional view along line bb, and FIG. 4C is a cross-sectional view along line cc.
5 (a) is a plan view, FIG. 5 (b) is a cross-sectional view along line bb, and FIG. 5 (c) is a cross-sectional view along line cc. (D) is an enlarged sectional view.
6A and 6B show a construction process of a pile, wherein FIG. 6A is a plan view, FIG. 6B is a cross-sectional view along line bb, and FIG. 6C is a cross-sectional view along line cc.
7A and 7B show a construction process of a head tie, wherein FIG. 7A is a plan view, FIG. 7B is a cross-sectional view along line bb, and FIG. 7C is a cross-sectional view along line cc.
8A and 8B show an excavation step, wherein FIG. 8A is a plan view, FIG. 8B is a cross-sectional view along line bb, and FIG. 8C is a cross-sectional view along line cc.
9A and 9B show a construction process of a foundation beam portion and a vertical joint portion, wherein FIG. 9A is a plan view, FIG. 9B is a cross-sectional view along line bb, and FIG. 9C is a cross-sectional view along line cc. is there.
FIG. 10 is a longitudinal sectional view of an underground structure.
FIG. 11 is a sectional view taken along the line XI-XI in FIG. 10;
FIG. 12 is a cross-sectional view showing a joined state of the basement wall PC member.
FIG. 13 is a cross-sectional view showing a joining state of main bars in a joining notch of the basement wall PC member.
FIG. 14 is a sectional view taken along the line XIV-XIV in FIG. 11;
FIG. 15 is a sectional view taken along the line XV-XV in FIG. 11;
FIG. 16 is a cross-sectional view showing a joined state of the basement wall PC member.
FIG. 17 is a cross-sectional view of a foundation beam portion showing a joined state of the basement wall PC member.
FIG. 18 is a sectional view taken along the line XVIII-XVIII in FIG.
19A and 19B show construction of a conventional pile, wherein FIG. 19A is a plan view, FIG. 19B is a cross-sectional view along line bb, and FIG. 19C is a cross-sectional view along line cc.
20A and 20B show a conventional sheet pile driving, in which FIG. 20A is a plan view, FIG. 20B is a sectional view along line bb, and FIG. 20C is a sectional view along line cc.
21 (a) is a plan view, FIG. 21 (b) is a sectional view taken along the line bb, and FIG. 21 (c) is a sectional view taken along the line cc. It is sectional drawing.
22 (a) is a plan view, FIG. 22 (b) is a sectional view taken along the line bb, and FIG. FIG. 3 is a cross-sectional view along the line cc.
23 (a) is a plan view, FIG. 23 (b) is a sectional view taken along the line bb, and FIG. 23 (c) is a line cc. FIG.
24 (a) is a plan view, FIG. 24 (b) is a sectional view taken along the line bb, and FIG. 24 (c) is a line cc. It is sectional drawing which follows.
[Explanation of symbols]
1, 2, 3 Underground wall PC members 1a, 2a, 3a Walls 1b, 2b, 3b Vertical joints 1e, 2e, 3e Pile construction space 10 PC wall hole 15 Pile

Claims (1)

壁部と、この壁部の両側端に付設された杭施工用スペースを有する柱状の鉛直接合部と、基礎梁部とから構成される地下壁用PC部材をPC壁孔に建入れ、前記杭施工用スペースに杭打機の掘削用オーガを挿入して杭孔を掘削し、その後杭を打ち込むことを特徴とする地下壁用PC部材を利用した地下構造物の杭の施工法。A PC member for an underground wall composed of a wall, a columnar vertical joint having a space for pile construction attached to both ends of the wall, and a foundation beam is installed in the PC wall hole, and A method for constructing an underground structural pile using an underground wall PC member, comprising inserting a drilling auger of a pile driver into a construction space, excavating a pile hole, and then driving the pile.
JP16725095A 1995-07-03 1995-07-03 Construction method of pile of underground structure using PC member for underground wall Expired - Fee Related JP3587479B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP16725095A JP3587479B2 (en) 1995-07-03 1995-07-03 Construction method of pile of underground structure using PC member for underground wall

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP16725095A JP3587479B2 (en) 1995-07-03 1995-07-03 Construction method of pile of underground structure using PC member for underground wall

Publications (2)

Publication Number Publication Date
JPH09165766A JPH09165766A (en) 1997-06-24
JP3587479B2 true JP3587479B2 (en) 2004-11-10

Family

ID=15846252

Family Applications (1)

Application Number Title Priority Date Filing Date
JP16725095A Expired - Fee Related JP3587479B2 (en) 1995-07-03 1995-07-03 Construction method of pile of underground structure using PC member for underground wall

Country Status (1)

Country Link
JP (1) JP3587479B2 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104674846A (en) * 2015-02-16 2015-06-03 济南轨道交通集团有限公司 Construction method for evacuating subway station by prefabricated structure cover

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2012184596A (en) * 2011-03-07 2012-09-27 Taisei Corp Pile loading test method
CN103195088B (en) * 2013-04-09 2015-10-28 重庆中设工程设计股份有限公司 A kind of method of the raising existing ground channel clearance based on pile foundation support
CN104762991B (en) * 2015-04-09 2016-09-07 济南轨道交通集团有限公司 The attachment structure of a kind of fender post and underground structure body pillar and method of attachment

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104674846A (en) * 2015-02-16 2015-06-03 济南轨道交通集团有限公司 Construction method for evacuating subway station by prefabricated structure cover

Also Published As

Publication number Publication date
JPH09165766A (en) 1997-06-24

Similar Documents

Publication Publication Date Title
KR102195504B1 (en) Construction method for Eearth self-retaining wall using reinforcing member and CIP construction method
JP2007154413A (en) Soldier pile type earth retaining anchor type retaining wall and its construction method
KR102195510B1 (en) Construction method for earth self-retaining wall using reinforcing member and PHC pile
JP3587479B2 (en) Construction method of pile of underground structure using PC member for underground wall
JP4042153B2 (en) Construction method of wall formwork block and wall structure and underground structure
KR100673475B1 (en) A pc girder member for frame of underground layer and assembling structure of frame of underground by using of it and the method therof
JP5480744B2 (en) Foundation for structure and its construction method
JP3829319B2 (en) Construction method of underground hollow structure and its underground hollow structure
KR20210088850A (en) Top-down construction method
JPS63280153A (en) Underground inverted lining method
JP3805342B2 (en) Yamadome wall structure
JPH11190024A (en) Earth retaining work
KR102194388B1 (en) Construction method for earth self-retaining wall using reinforcing member and Soil retaining plate construction method
KR100694762B1 (en) Method for constructing underground slabs and walls without preliminary wall-attached supports
KR102194394B1 (en) Construction method for earth self-retaining wall using reinforcing member and SCW construction method
JPH0913403A (en) Pc member for underground wall, underground structure construction method using it, and underground structure
JP2004132124A (en) Pneumatic caisson and pneumatic caisson constructing method
JP2002309589A (en) Structure for joining foundation to footing beam
JPH04185816A (en) Construction of beam in underground wall
JP4117209B2 (en) Bridge pier / Abutment base combined reinforcement structure
JP2842149B2 (en) Underground structure
JPH0959984A (en) Simple subsurface construction structure
JP2915746B2 (en) Foundation formwork
JP2572680B2 (en) Underground structure by reverse strike method
KR20230144862A (en) Pile wall for both retaining and permanent walls And Construction method

Legal Events

Date Code Title Description
RD04 Notification of resignation of power of attorney

Free format text: JAPANESE INTERMEDIATE CODE: A7424

Effective date: 20040507

A521 Written amendment

Free format text: JAPANESE INTERMEDIATE CODE: A821

Effective date: 20040512

TRDD Decision of grant or rejection written
A01 Written decision to grant a patent or to grant a registration (utility model)

Free format text: JAPANESE INTERMEDIATE CODE: A01

Effective date: 20040803

A61 First payment of annual fees (during grant procedure)

Free format text: JAPANESE INTERMEDIATE CODE: A61

Effective date: 20040809

R150 Certificate of patent or registration of utility model

Free format text: JAPANESE INTERMEDIATE CODE: R150

S531 Written request for registration of change of domicile

Free format text: JAPANESE INTERMEDIATE CODE: R313531

S111 Request for change of ownership or part of ownership

Free format text: JAPANESE INTERMEDIATE CODE: R313117

R350 Written notification of registration of transfer

Free format text: JAPANESE INTERMEDIATE CODE: R350

FPAY Renewal fee payment (event date is renewal date of database)

Free format text: PAYMENT UNTIL: 20080820

Year of fee payment: 4

R350 Written notification of registration of transfer

Free format text: JAPANESE INTERMEDIATE CODE: R350

FPAY Renewal fee payment (event date is renewal date of database)

Free format text: PAYMENT UNTIL: 20080820

Year of fee payment: 4

FPAY Renewal fee payment (event date is renewal date of database)

Free format text: PAYMENT UNTIL: 20090820

Year of fee payment: 5

LAPS Cancellation because of no payment of annual fees