JP2007063915A - Foundation structure of small-scale building - Google Patents

Foundation structure of small-scale building Download PDF

Info

Publication number
JP2007063915A
JP2007063915A JP2005253750A JP2005253750A JP2007063915A JP 2007063915 A JP2007063915 A JP 2007063915A JP 2005253750 A JP2005253750 A JP 2005253750A JP 2005253750 A JP2005253750 A JP 2005253750A JP 2007063915 A JP2007063915 A JP 2007063915A
Authority
JP
Japan
Prior art keywords
small
diameter
group
diameter pipe
ground
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
JP2005253750A
Other languages
Japanese (ja)
Inventor
Yoshio Wakamei
若命善雄
Katsuhiko Sato
佐藤克彦
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.)
SEKKEISHITSU SOIL KK
TORABAASU KK
Soil Design Co Ltd
Original Assignee
SEKKEISHITSU SOIL KK
TORABAASU KK
Soil Design 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 SEKKEISHITSU SOIL KK, TORABAASU KK, Soil Design Co Ltd filed Critical SEKKEISHITSU SOIL KK
Priority to JP2005253750A priority Critical patent/JP2007063915A/en
Publication of JP2007063915A publication Critical patent/JP2007063915A/en
Pending legal-status Critical Current

Links

Images

Abstract

<P>PROBLEM TO BE SOLVED: To provide a foundation which supports a small-scale building without improving the whole ground or driving a long bearing pile which reaches a deep supporting layer. <P>SOLUTION: The foundation comprises a group of small-diameter pipes each having a diameter of approximately 5 cm installed underground and a group of large-diameter pipes each having a diameter of approximately 10 cm installed underground. The group of the small-diameter pipes is installed underground to a depth of approximately 7 m and the group of the large-diameter pipes is installed underground to a depth of approximately 11 m. An improved block for supporting the small-scale building is formed by reinforcing the ground by the group of the small-diameter pipes. The group of the large-diameter pipes suppresses the settlement of the improved block. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

本発明は、小規模建物の基礎の構造に関するものである。   The present invention relates to the structure of the foundation of a small building.

特に軟弱な粘性土の地盤上に戸建住宅のような小規模な建物を構築する場合に、建物の支持力不足による沈下と、建物荷重による粘性土の圧密沈下が生じ、その結果、建物が傾斜するといった問題が生じる。
そのような問題を解決するには、薬液注入を行って地盤を全面的に改良するか、あるいは支持層まで達する支持杭を打設して支持層で建物を支えて沈下、傾斜を阻止する方法が採用されている。
しかしそれらの方法は特に個人の住宅のような小規模な建物に利用する場合には、装置も大型となり価格的にも採用することは困難である。
そこで小規模な建物を対象とした地盤を補強する方法としてＲＥＳ−Ｐ工法と称する簡易な工法が知られている。
この工法は図５に示すように建物Ａの布基礎またはべた基礎直下の地盤に、直径4.86ｃｍ、厚さ2.4ｍｍの細径パイプ１を、40ｃｍ〜85ｃｍの間隔で回転圧入して改良ブロック２を形成し、地盤と細径パイプ１群の複合効果によって地盤の支持力の増加と基礎の沈下低減を図ることを特徴としている。
特許第２９３９１５７号公報。 特許第２９３９１５８号公報。 In particular, when building a small-scale building such as a detached house on soft clay soil, subsidence due to lack of bearing capacity of the building and consolidation subsidence of the cohesive soil due to the building load occurs. The problem of tilting arises.
In order to solve such problems, a method of injecting chemicals to improve the ground completely, or placing a support pile reaching the support layer and supporting the building with the support layer to prevent subsidence and inclination Is adopted.
However, these methods are difficult to adopt because of the large size of the device, particularly when used in small buildings such as private houses.
Therefore, a simple method called RES-P method is known as a method for reinforcing the ground for small buildings.
As shown in FIG. 5, this construction method is a modified block 2 in which a thin pipe 1 having a diameter of 4.86 cm and a thickness of 2.4 mm is rotationally press-fitted at an interval of 40 cm to 85 cm on the ground just below the fabric foundation or solid foundation of the building A. It is characterized by increasing the bearing capacity of the ground and reducing the settlement of the foundation by the combined effect of the ground and a group of small diameter pipes.
Japanese Patent No. 2939157. Japanese Patent No. 2939158.

前記したＲＥＳ−Ｐ工法は低コストでかつ簡単に施工できることから、基礎の長期接地圧が50ｋＮ/ｍ2以下の小規模建物用の基礎地盤の補強対策として広く採用されている。
しかしまた、次のような問題点が存在した。
＜１＞ 細径パイプ群の細長比の制約、すなわちパイプの直径と長さの比が150までという制約から、パイプの長さは７ｍという上限が設けられている。
＜２＞ その結果、細径パイプ群の先端より深い位置に圧密沈下の恐れのある軟弱な粘性土層が存在する場合には採用することができない。
＜３＞ そのような条件の地盤では、高額な長尺の支持杭を打設し、あるいは圧入する工法を採用せざるを得ない。
Wherein the RES-P method is because it can construction simple and low cost, long-term ground pressure of the foundation has been widely adopted as a reinforcement countermeasure of the foundation ground for buildings 50 kN / m 2 or less small.
However, there were the following problems.
<1> The upper limit of the pipe length is set to 7 m because of the restriction of the slenderness ratio of the small-diameter pipe group, that is, the restriction that the ratio of the pipe diameter to the length is 150.
<2> As a result, it is not possible to employ when a soft viscous soil layer that may cause consolidation settlement exists at a position deeper than the tip of the small-diameter pipe group.
<3> On the ground under such conditions, a construction method in which an expensive long support pile is placed or press-fitted is unavoidable.

上記のような課題を解決するために、本発明の小規模建物の基礎の構造は、地中に設置した直径５ｃｍ前後の細径パイプ群と、地中に設置した直径１０ｃｍ前後の大径パイプ群によって構成し、細径パイプ群は深度７ｍ前後まで地中に設置し、大径パイプ群は深度１１〜１５ｍ前後まで地中に設置し、細径パイプ群によって、地盤を補強して小規模建物を支持する改良ブロックを形成し、大径パイプ群によって、前記の改良ブロックの沈下を抑制するように構成した小規模建物の基礎の構造を特徴としたものである。
In order to solve the above-described problems, the basic structure of a small-scale building according to the present invention includes a small-diameter pipe group having a diameter of about 5 cm and a large-diameter pipe having a diameter of about 10 cm installed in the ground. The small diameter pipe group is installed in the ground up to a depth of about 7m, the large diameter pipe group is installed in the ground up to a depth of about 11-15m, and the ground is reinforced by the small diameter pipe group on a small scale. The present invention is characterized by the structure of the foundation of a small-scale building in which an improved block that supports the building is formed and the set-up of the improved block is suppressed by a large-diameter pipe group.

本発明の小規模建物の基礎の構造は以上説明したようになるから、全面地盤改良することなく、あるいは深い支持層まで達する長い支持杭を打設することなく、小規模建物を支持できる基礎を提供することができる。
また、細径パイプ群を地中に設置した場合にその先端以深に圧密沈下の恐れのある軟弱な粘性土層が存在する場合でも、低コストで確実に小規模建物を支持できる基礎を提供することができる。
Since the structure of the foundation of the small-scale building of the present invention is as described above, a foundation capable of supporting the small-scale building without improving the entire ground surface or without placing a long support pile reaching a deep support layer. Can be provided.
In addition, when a group of small diameter pipes is installed in the ground, even if there is a soft cohesive soil layer deeper than the tip of the pipe, there is a foundation that can support small buildings reliably at low cost. be able to.

以下図面を参照にしながら本発明の好適な実施の形態を詳細に説明する。   DESCRIPTION OF EMBODIMENTS Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the drawings.

＜１＞前提条件。
前記したように本発明の基礎は、戸建住宅のような小規模な建物を軟弱な粘性土地盤の上に構築する場合の基礎として発明したものである。
具体的には図２に示すように、建物Ａの基礎のスラブの下は、Ｎ値が０〜３の軟弱な地層が軟弱層Ｂとして１０ｍ程度堆積しており、その下にはＮ値が１０〜２０の中間層Ｃが深度２０ｍ付近まで堆積し、Ｎ値が１５以上の強固な支持層Ｄは深さ３０ｍ付近に存在している場合を想定している。
このような構成の地盤が日本には多く存在するからである。 <1> Precondition.
As described above, the foundation of the present invention was invented as a foundation for constructing a small-scale building such as a detached house on a soft, viscous ground.
Specifically, as shown in FIG. 2, under the slab of the foundation of the building A, a soft ground layer having an N value of 0 to 3 is deposited as about 10 m as the soft layer B, and the N value is below that. It is assumed that 10 to 20 intermediate layers C are deposited to a depth of about 20 m, and a strong support layer D having an N value of 15 or more exists at a depth of about 30 m.
This is because there are many grounds with this structure in Japan.

＜２＞使用するパイプ。
本発明の基礎の構造では、細径パイプ１と、それよりも直径の大きい大径パイプ３を使用する。 <2> Pipe to be used.
In the basic structure of the present invention, the small-diameter pipe 1 and the large-diameter pipe 3 having a larger diameter are used.

＜３＞細径パイプ１。
本発明の構造では、多数本の細径パイプ１を使用する。
細径パイプ１とは、直径が５ｃｍ前後のパイプである。
実際には直径が48.6ｍｍのものが市販されていて入手しやすく、使用に適している。
そのパイプは肉厚が2.4ｍｍで長さが７ｍである。 <3> A small-diameter pipe 1.
In the structure of the present invention, a large number of small-diameter pipes 1 are used.
The small-diameter pipe 1 is a pipe having a diameter of about 5 cm.
Actually, a 48.6 mm diameter product is commercially available and easy to obtain and suitable for use.
The pipe is 2.4mm thick and 7m long.

＜４＞大径パイプ３。
本発明の構造では大径パイプ３も使用する。
この大径パイプ３とは直径が１０ｃｍ前後のパイプである。
実際には直径が89.1ｍｍのものが市販されていて入手しやすく、使用に適している。
その大径パイプ３は長さが１１〜１５ｍのものを使用する。 <4> Large diameter pipe 3.
In the structure of the present invention, a large-diameter pipe 3 is also used.
The large diameter pipe 3 is a pipe having a diameter of about 10 cm.
Actually, a product having a diameter of 89.1 mm is commercially available and is suitable for use.
The large-diameter pipe 3 has a length of 11 to 15 m.

＜５＞改良ブロック２の形成。
前記した細径パイプ１を、図３に示すように40〜85ｃｍの間隔で碁盤の目状に鉛直に地中に向けて設置する。
設置のためにパイプを回転、圧入する装置、あるいは打撃する装置は公知のものを使用することができる。
細径パイプ１群の先端は、地表面下７ｍ程度に位置するように配置する。
この７ｍという数値は細径パイプ１の細長比の制約から得られたものであり、それよりも長いと座屈の可能性があるからである。
多数本の細径パイプ１群を地中に設置する結果、各細径パイプ１の周面と地盤との摩擦力、および各細径パイプ１の先端の抵抗力の総和によって改良ブロック２として機能し、小規模な建物Ａおよびその基礎の荷重を支持することができるようになる。 <5> Formation of the improved block 2.
As shown in FIG. 3, the above-described small-diameter pipe 1 is installed vertically in the form of a grid at intervals of 40 to 85 cm.
As a device for rotating and press-fitting a pipe for installation or a device for hitting, a known device can be used.
The tips of the small-diameter pipes 1 group are arranged so as to be located about 7 m below the ground surface.
This numerical value of 7 m is obtained from the restriction of the slenderness ratio of the small-diameter pipe 1, and if it is longer than that, there is a possibility of buckling.
As a result of installing a large number of small-diameter pipes 1 in the ground, it functions as an improved block 2 due to the sum of the frictional force between the peripheral surface of each small-diameter pipe 1 and the ground and the resistance force at the tip of each small-diameter pipe 1 Thus, the load on the small building A and its foundation can be supported.

＜６＞大径パイプ３群の設置。
細径パイプ１群の地中への配置によって改良ブロック２を形成したので、支持力を得ることはできる。
しかしそのままでは改良ブロック２の上に建物Ａを構築した場合に、軟弱層Ｂ、中間層Ｃの沈下によって改良ブロック２自体が沈下して、建物Ａに有害となる沈下が発生する可能性がある。
そこで次に、細径パイプ１群とは別に、前記した直径10ｃｍ程度の大径パイプ３を地中に設置する。
この大径パイプ３群は、細径パイプ１の間隔よりも広い間隔、例えば２ｍ〜３ｍの間隔で地中に配置する。
またこの大径パイプ３群は将来構築する建物Ａの基礎の立ち上がり位置に沿って配置するとにより確実に建物を支持することができるが、後述するように大径パイプ３群の下端は支持層Ｄまで到達させてはいないから、従来のような支持杭として建物Ａを支持することを期待しているものではない。
この大径パイプ３も、前記の細径パイプ１を設置した同一の装置を使用して地中へ回転、圧入し、あるいは打撃して打ち込むことができる。
この大径パイプ３群はその先端を深度１１〜１５ｍ前後の位置まで、すなわち細径パイプ１群よりも深い位置まで設置する。
大径パイプ３の先端の深度を１１〜１５ｍ前後とした根拠は、大径パイプの細長比150を根拠にきめたものである。
ただしこの大径パイプ３群の先端は支持層まで到達していない。
その先端は前記した中間層Ｃの途中まで到達させておけばよい。
したがって大径パイプ３はパイプの周面と地盤との摩擦抵抗、およびパイプの先端の抵抗によって改良ブロック２の沈下を抑制することになる。 <6> Installation of 3 groups of large diameter pipes.
Since the improved block 2 is formed by arranging the small-diameter pipe 1 group in the ground, a supporting force can be obtained.
However, if the building A is constructed on the improved block 2 as it is, the improved block 2 may sink due to the subsidence of the soft layer B and the intermediate layer C, which may cause a subsidence that is harmful to the building A. .
Therefore, next to the large-diameter pipe 1 group, the large-diameter pipe 3 having a diameter of about 10 cm is installed in the ground.
The large-diameter pipe 3 group is arranged in the ground at an interval wider than the interval between the small-diameter pipes 1, for example, an interval of 2 to 3 m.
The large-diameter pipe 3 group can support the building reliably by arranging it along the rising position of the foundation of the building A to be constructed in the future. However, as will be described later, the lower end of the large-diameter pipe 3 group is the support layer D. Therefore, it is not expected to support the building A as a conventional support pile.
This large-diameter pipe 3 can also be driven by rotation, press-fitting into the ground, or striking it using the same device where the small-diameter pipe 1 is installed.
The large-diameter pipe 3 group is installed at the tip thereof at a depth of about 11 to 15 m, that is, deeper than the small-diameter pipe 1 group.
The reason why the depth of the tip of the large-diameter pipe 3 is around 11 to 15 m is based on the slenderness ratio 150 of the large-diameter pipe.
However, the tip of the large-diameter pipe 3 group does not reach the support layer.
The leading end may reach the middle of the intermediate layer C described above.
Accordingly, the large-diameter pipe 3 suppresses the settlement of the improved block 2 by the frictional resistance between the pipe circumferential surface and the ground and the resistance at the tip of the pipe.

＜７＞大径パイプの設置深さ。
前記したように、大径パイプ３の先端は支持層Ｄには到達していない。
それならばどの程度の深度まで設置すればよいか。
本発明ではそれを１１〜１５ｍ前後と設定した。
その根拠は図４に示すとおりである。
すなわち、小規模な建物Ａの重量を受けた場合に沈下を考慮する範囲は細径パイプ１の下端からの長さの１／３を含めて６ｍ程度である。
この６ｍの範囲に大径パイプ３を位置させればよい。
その結果、大径パイプ３の先端は細径パイプ１の先端から約４ｍ程度の位置に位置させればよいことになり、合計で１１ｍ前後という数値を得ることができる。 <7> Installation depth of large diameter pipe.
As described above, the tip of the large-diameter pipe 3 does not reach the support layer D.
If so, how much depth should be installed?
In the present invention, it is set to around 11 to 15 m.
The grounds are as shown in FIG.
That is, when the weight of the small building A is received, the range in which settlement is taken into consideration is about 6 m including 1/3 of the length from the lower end of the small-diameter pipe 1.
What is necessary is just to position the large diameter pipe 3 in the range of this 6m.
As a result, the tip of the large-diameter pipe 3 may be positioned at a position of about 4 m from the tip of the small-diameter pipe 1, and a total value of about 11 m can be obtained.

＜８＞大径パイプ３群の荷重負担の根拠。
上記のような支持層に達していない大径パイプ３群の本数は、小規模建物の荷重の１／３前後の荷重を負担する程度に算定する。
その根拠は次のとおりである。
１） 建物荷重ｗを大径パイプの極限支持力で支持させる。
極限支持力×１／３＝長期支持力 （一般には建物荷重を長期支持力で支持する）
２） 建物荷重を細径パイプ群に１／２だけ分担させ、大径パイプ群に１／２だけ分担させる。
３） 建物荷重の１／２を大径パイプの極限支持力の１／２で支持する。
４） 以上のような考え方で、大径パイプ群の本数を、小規模建物の荷重の１／３前後の荷重を負担させることとして算定した。 <8> Grounds for the load burden of the three large diameter pipe groups.
The number of the three large-diameter pipe groups that have not reached the support layer as described above is calculated so as to bear a load of about 1/3 of the load of the small-scale building.
The basis for this is as follows.
1) The building load w is supported by the ultimate supporting force of the large-diameter pipe.
Ultimate bearing capacity x 1/3 = Long-term bearing capacity (In general, building loads are supported by long-term bearing capacity)
2) Share the building load by 1/2 to the small diameter pipe group and distribute the building load by 1/2 to the large diameter pipe group.
3) Support 1/2 of the building load with 1/2 of the ultimate bearing capacity of the large-diameter pipe.
4) Based on the above-mentioned concept, the number of large-diameter pipe groups was calculated as bearing a load of about 1/3 of the load of a small building.

＜９＞計算の例。
以上の前提から例えば建物面積２４ｍ2の場合に必要とする大径パイプ３の本数を計算すると次のようになる。
建物重量30×24＝720KN。
大径パイプ３の許容支持力を40KT/１本。
720÷３÷40＝６本。
こうして必要とする大径パイプ３の本数を決定することができる。 <9> Example of calculation.
Based on the above assumptions, for example, the number of large-diameter pipes 3 required for a building area of 24 m 2 is calculated as follows.
Building weight 30 × 24 = 720KN.
Allowable bearing capacity of large diameter pipe 3 is 40KT / piece.
720 ÷ 3 ÷ 40 = 6.
Thus, the number of large diameter pipes 3 required can be determined.

＜１０＞建物の構築。
以上の工程によって構築した基礎の上に、建物の基礎スラブを構築し、基礎スラブの上に建物を構築する。
建物は、基礎のスラブ、細径パイプ１群による改良ブロック、そして大径パイプ３群による沈下の抑制によって安定した状態で支持されることになる。
<10> Building construction.
The foundation slab of the building is constructed on the foundation constructed by the above process, and the building is constructed on the foundation slab.
The building will be supported in a stable state by a foundation slab, an improved block by a group of small diameter pipes, and suppression of settlement by a group of three large diameter pipes.

本発明の小規模建物の基礎の構造の実施例の説明図。Explanatory drawing of the Example of the structure of the foundation of the small-sized building of this invention. その断面図。FIG. その平面図。The plan view. 大径パイプの深度を決めた根拠の説明図。Explanatory drawing of the grounds which decided the depth of a large diameter pipe. 従来の工法の説明図。Explanatory drawing of the conventional construction method.

符号の説明Explanation of symbols

１：細径パイプ
２：改良ブロック
３：大径パイプ 1: Small-diameter pipe 2: Improved block 3: Large-diameter pipe

Claims (2)

地中に設置した直径５ｃｍ前後の細径パイプ群と、
地中に設置した直径１０ｃｍ前後の大径パイプ群によって構成し、
細径パイプ群は深度７ｍ前後まで地中に設置し、
大径パイプ群は深度１１〜１５ｍ前後まで地中に設置し、
細径パイプ群によって、地盤を補強して小規模建物を支持する改良ブロックを形成し、
大径パイプ群によって、前記の改良ブロックの沈下を抑制するように構成した、
小規模建物の基礎の構造。
A group of small diameter pipes with a diameter of around 5 cm installed in the ground,
Consists of a group of large-diameter pipes with a diameter of around 10 cm installed in the ground,
The small-diameter pipe group is installed in the ground to a depth of around 7m.
Large diameter pipe group is installed in the ground to a depth of around 11-15m,
The small-diameter pipe group forms an improved block that reinforces the ground and supports small buildings,
The large-diameter pipe group is configured to suppress the settlement of the improved block.
The basic structure of a small building.
大径パイプ群は、
小規模建物の荷重の１／３前後の荷重を負担させ、
かつ摩擦杭として構成した、
請求項１記載の、小規模建物の基礎の構造。
Large diameter pipe group
Bear a load of about 1/3 of the load of a small building,
And configured as a friction pile,
The structure of the foundation of a small building according to claim 1.
JP2005253750A 2005-09-01 2005-09-01 Foundation structure of small-scale building Pending JP2007063915A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP2005253750A JP2007063915A (en) 2005-09-01 2005-09-01 Foundation structure of small-scale building

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2005253750A JP2007063915A (en) 2005-09-01 2005-09-01 Foundation structure of small-scale building

Publications (1)

Publication Number Publication Date
JP2007063915A true JP2007063915A (en) 2007-03-15

Family

ID=37926420

Family Applications (1)

Application Number Title Priority Date Filing Date
JP2005253750A Pending JP2007063915A (en) 2005-09-01 2005-09-01 Foundation structure of small-scale building

Country Status (1)

Country Link
JP (1) JP2007063915A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2008297802A (en) * 2007-05-31 2008-12-11 Shimizu Corp Settlement suppressing structure of structures

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2939157B2 (en) * 1995-06-28 1999-08-25 大成建設株式会社 Method of strengthening ground support with steel pipe
JP2939158B2 (en) * 1995-06-28 1999-08-25 大成建設株式会社 Steel pipe used for strengthening the bearing capacity of residential ground
JPH11256563A (en) * 1998-03-10 1999-09-21 Takenaka Komuten Co Ltd Soil improvement foundation construction method in soft foundation
JP2002129584A (en) * 2000-10-24 2002-05-09 Shimizu Corp Foundation structure
JP2002332644A (en) * 2001-05-07 2002-11-22 Takenaka Komuten Co Ltd Method and structure for joining pile head of pile foundation structure
JP2004068253A (en) * 2002-08-01 2004-03-04 Nippon Steel Corp Foundation structure of structure

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2939157B2 (en) * 1995-06-28 1999-08-25 大成建設株式会社 Method of strengthening ground support with steel pipe
JP2939158B2 (en) * 1995-06-28 1999-08-25 大成建設株式会社 Steel pipe used for strengthening the bearing capacity of residential ground
JPH11256563A (en) * 1998-03-10 1999-09-21 Takenaka Komuten Co Ltd Soil improvement foundation construction method in soft foundation
JP2002129584A (en) * 2000-10-24 2002-05-09 Shimizu Corp Foundation structure
JP2002332644A (en) * 2001-05-07 2002-11-22 Takenaka Komuten Co Ltd Method and structure for joining pile head of pile foundation structure
JP2004068253A (en) * 2002-08-01 2004-03-04 Nippon Steel Corp Foundation structure of structure

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2008297802A (en) * 2007-05-31 2008-12-11 Shimizu Corp Settlement suppressing structure of structures

Similar Documents

Publication Publication Date Title
JP2009167660A (en) Tower crane foundation structure and method of constructing the same
Kim et al. Load‐sharing ratio of prebored and precast pile in top‐down method construction process
Tan et al. Piled raft with different pile length for medium-rise buildings on very soft clay
CN206409743U (en) The steel pipe pile-supported structure of underground utilities
JP2007063915A (en) Foundation structure of small-scale building
JP2007247308A (en) Pulling-out bearing strength reinforcing for pile group comprised of inclined piles and structure constructed according to the same
JP4228308B2 (en) Reinforcement method for existing floors and seismic isolation method for existing buildings
Tan et al. Methodology for design of piled raft for 5-story buildings on very soft clay
JP2010215251A (en) Method and structure for improving earthquake-proof performance of existing pc tank
JP2007247302A (en) Reinforcement structure and reinforcement construction method of bridge pier
Wang et al. Differential uplift and settlement between inner column and diaphragm wall in top-down excavation
KR101257905B1 (en) Method for constructing foundation work
JP2009150075A (en) Structure for preventing subsidence of structure
KR200406776Y1 (en) Cushion mat support structure for preventing settlement of soft ground water and sewage pipe
JP2010209546A (en) Preboring h-steel pile
KR20160075189A (en) pile supporter
CN100591861C (en) Stirring pile pit supporting construction
JP4900091B2 (en) Embankment structure, embankment method
Jeng et al. Performance analysis of slopes reinforced using micropiles
JP2020117962A (en) Levee body seepage destruction suppression structure
JP5190044B2 (en) Foundation structure
JP2008297802A (en) Settlement suppressing structure of structures
RU2457292C2 (en) Earthquake-proof pile
JP2010209605A (en) Piled-raft foundation
JP2011047274A (en) Foundation structure and construction method of the foundation structure

Legal Events

Date Code Title Description
A621 Written request for application examination

Free format text: JAPANESE INTERMEDIATE CODE: A621

Effective date: 20070807

A977 Report on retrieval

Free format text: JAPANESE INTERMEDIATE CODE: A971007

Effective date: 20090629

A131 Notification of reasons for refusal

Free format text: JAPANESE INTERMEDIATE CODE: A131

Effective date: 20100629

A02 Decision of refusal

Free format text: JAPANESE INTERMEDIATE CODE: A02

Effective date: 20101026