JPS62160321A - Earthquake proofing and reinforcing work for pile foundation structure - Google Patents

Earthquake proofing and reinforcing work for pile foundation structure

Info

Publication number
JPS62160321A
JPS62160321A JP7186A JP7186A JPS62160321A JP S62160321 A JPS62160321 A JP S62160321A JP 7186 A JP7186 A JP 7186A JP 7186 A JP7186 A JP 7186A JP S62160321 A JPS62160321 A JP S62160321A
Authority
JP
Japan
Prior art keywords
pile
wall
earthquake
foundation
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.)
Granted
Application number
JP7186A
Other languages
Japanese (ja)
Other versions
JPH063029B2 (en
Inventor
Yoshiaki Nagataki
慶明 長瀧
Yoshio Wakamei
善雄 若命
Hideo Kobayashi
英雄 小林
Masato Majima
正人 真島
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.)
Taisei Corp
Original Assignee
Taisei 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
Family has litigation
First worldwide family litigation filed litigation Critical https://patents.darts-ip.com/?family=11463947&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=JPS62160321(A) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Application filed by Taisei Corp filed Critical Taisei Corp
Priority to JP61000071A priority Critical patent/JPH063029B2/en
Publication of JPS62160321A publication Critical patent/JPS62160321A/en
Publication of JPH063029B2 publication Critical patent/JPH063029B2/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Abstract

PURPOSE:To permit horizontal forces applying to a pile to be shared to a continuous wall by connecting a continuous underground wall constructed in the surrounding ground with the base beams of a structure supported by the pile foundation with slabs and/or connecting beams. CONSTITUTION:In supporting a basement or a structure A having a shallow base setting portion by penetrating piles 1 into the ground 3 until the bearing ground 2 is reached, a continuous wall 4 constructed in the surrounding ground of the structure A is connected to the base beams of the structure A with slabs 5 and/or connecting beams 6. Horizontal forces F applying to the structure A when earthquake occurs are transmitted through the slabs 5 and/or beams 6 to the wall 4, and most of the forces of earthquake is shared to the wall 4 and only the vertical bearing forces are almost shared to the piles 1. The breakage of the pile body and head by earthquake can thus be prevented.

Description

【発明の詳細な説明】 (産業上の利用分野) 本発明は地下室や基礎根入部を持たないか、基礎の根入
れが浅い構造物の杭基礎の耐震補強工法に係るものであ
る。
DETAILED DESCRIPTION OF THE INVENTION (Field of Industrial Application) The present invention relates to a seismic reinforcement method for pile foundations of structures that do not have basements or foundation penetration, or have shallow foundation penetration.

(従来の技術) 従来この種の構造物は第5図及び第6図に示す工うに、
支持地盤(a)に到達するように地盤(6)に貫入され
た杭(6)上に構築さnている、(発明が解決しようと
する問題点) この場合、地震水平外力Fi杭(c)及び構造物(A)
の底面摩擦のみで負担しなくてはならず、杭の破壊を生
起した場合、従来は新規に杭を構築して補強していた。
(Prior Art) Conventionally, this type of structure was constructed as shown in Figs. 5 and 6.
(Problem to be Solved by the Invention) In this case, the earthquake horizontal external force Fi pile (c ) and structure (A)
The load must be borne only by the friction on the bottom of the pile, and in the event of a pile failure, conventionally a new pile was constructed and reinforced.

また杭(c)が地震水平外力Fに耐えるためには、杭の
水平耐力、杭木数、杭断面、杭周辺の地盤改良等、檻々
の耐震要素を確保しなければならず、経済的に問題があ
った。
In addition, in order for the pile (c) to withstand the earthquake horizontal external force F, it is necessary to ensure the earthquake-resistant elements of the cage, such as the horizontal bearing capacity of the pile, the number of piles, the cross section of the pile, and the ground improvement around the pile. There was a problem.

(問題点全解決するだめの手段) 本発明はこのような問題点を解決するために提案された
ものであって、地下室や基礎根入部がないか、または基
礎根入部の浅い杭基礎によって支持された構造物の外周
地盤内に連続地中壁全構築したのち、同地中壁と前記構
造物の基礎梁と全スラブ及び/または繋ぎ梁で連結し、
地震時に杭に加わる水平力を前記連続壁に分担せしめる
こと全特徴とする杭基礎構造物の耐震補強工法に係るも
のである。
(Means for Solving All Problems) The present invention was proposed in order to solve these problems, and it is a method that is supported by pile foundations that do not have a basement or a foundation root, or have a shallow foundation root. After constructing a continuous underground wall in the outer ground of the structure, the underground wall is connected to the foundation beam of the structure with a full slab and/or a connecting beam,
This invention relates to a seismic reinforcement method for a pile foundation structure, which is characterized in that the horizontal force applied to the pile during an earthquake is shared by the continuous wall.

(作用〕 本発明に係る耐震補強工法においては、地下室や基礎根
入部がないか、または基礎根入部の浅い、杭基礎によっ
て支持された構造物の外周地盤内に連続地中壁全構築し
、しかるのち、同連続地中壁と前記構造物の基礎梁とを
スラブまたは繋ぎ梁、若しくはスラブと繋ぎ梁とによっ
て連結するようにしたので、地震時に前記杭に加わる水
平外力が、前記スラブ及び/または繋ぎ梁全介して前記
連続地中壁に分担される。
(Function) In the seismic reinforcement method according to the present invention, a continuous underground wall is entirely constructed in the outer ground of a structure supported by a pile foundation, which has no basement or foundation root, or has a shallow foundation root, Thereafter, the continuous underground wall and the foundation beam of the structure are connected by a slab or a connecting beam, or a slab and a connecting beam, so that the horizontal external force applied to the pile during an earthquake is transferred to the slab and/or the foundation beam. Or it is shared with the continuous underground wall through the entire connecting beam.

(発明の効果ン このように本発明によれば地震に加わる水平外力の大部
分が構造物外周地盤内に構築された地中連続壁に分担さ
れることとなり、従って杭は殆んど鉛直支持力のみ全負
担するだけでよく、抗体及び杭頭の破壊が防止される。
(Effects of the Invention) As described above, according to the present invention, most of the horizontal external force applied during an earthquake is distributed to the continuous underground wall built in the ground around the structure, and therefore the piles are mostly supported vertically. It is only necessary to bear the full force, and destruction of the antibody and the pile cap is prevented.

また本方法によれば構造物周囲に連続地中壁を設けて、
同地中壁を構造物の基礎梁と連結するだけで既存の杭基
礎構造物の補強が行なわnるので、構造物の外回9の杭
のみならず、構造物内側の杭も補強しなければならない
従来の既存構造物の杭基礎の補強方法に比して施工が容
易である。
In addition, according to this method, a continuous underground wall is provided around the structure,
Since the existing pile foundation structure can be reinforced simply by connecting the underground wall to the foundation beam of the structure, it is necessary to reinforce not only the piles on the outside of the structure but also the piles inside the structure. It is easier to construct than conventional methods of reinforcing pile foundations for existing structures.

(実施例) 以下本発明を図示の実施例について説明する。(Example) The present invention will be described below with reference to the illustrated embodiments.

第1図及び第2図に示す実施例において(1)は支持地
盤(2)に到達するまで地盤(3)内に貫入された杭で
、同杭(1)上に地下室や基礎根入部がないか、基礎根
入部の浅い構造物(A)が構築されている。
In the examples shown in Figures 1 and 2, (1) is a pile that has penetrated into the ground (3) until it reaches the supporting ground (2), and there is a basement or foundation root on the same pile (1). Or, a structure (A) with a shallow foundation has been constructed.

而して前記構造物四の外周地盤内に地中連続壁(4)を
構築し、同地中連続壁(4)と構造物(A)の基礎梁と
をスラブ(5)及び/または繋ぎ梁(6)で連結する。
Then, an underground continuous wall (4) is constructed in the ground around the outer periphery of the structure 4, and the underground continuous wall (4) and the foundation beam of the structure (A) are connected to the slab (5) and/or Connect with beam (6).

なお状況に応じて前記スラブ(5)及び繋ぎ梁(6)の
一方を省略することができる。
Note that one of the slab (5) and the connecting beam (6) can be omitted depending on the situation.

図示の実施例は前記したように構成さnているので、地
震時に構造物(A)に加わる地震水平外力Fは前記スラ
ブ(5J及び繋ぎ梁(6)を介して地中連続壁(4)に
伝達さnる。
Since the illustrated embodiment is configured as described above, the seismic horizontal external force F applied to the structure (A) during an earthquake is applied to the underground continuous wall (4) via the slab (5J and the connecting beam (6)). It is transmitted to.

このように前記実施例によnば、地震力の大部分が地中
連続壁(4)によって負担さnるので、杭(IIは殆ん
ど鉛直支持力のみを負担するだけでよく、杭の破壊が防
止される。
According to the above embodiment, most of the seismic force is borne by the underground continuous wall (4), so the pile (II) only needs to bear almost only the vertical bearing capacity, and the pile destruction is prevented.

なお、表層が軟弱地盤の場合は、前記連続地中壁(4)
の施工と併行して表層地盤を改良すると、耐震効果が得
られる。
In addition, if the surface layer is soft ground, the continuous underground wall (4)
Earthquake resistance can be achieved by improving the surface ground at the same time as construction.

第3図及び第4図は構造物四の周辺敷地に余裕がない場
合に本発明全適用した実施例全示し、構造物(A)の周
縁部直下の地盤(3)内に、杭(1)と一体化された地
中連続壁(4)全構築するものである。
Figures 3 and 4 show all the embodiments in which the present invention is fully applied when there is not enough space around structure 4, where piles (1 ) and an integrated underground continuous wall (4).

以上本発明を実施例について説明したが、本発明は勿論
このような実施例にだけ局限されるものではなく、本発
明の精神全逸脱しない範囲内で種種の設計の改変を施し
うるものである。
Although the present invention has been described above with reference to embodiments, the present invention is, of course, not limited to such embodiments, and can be modified in various ways without departing from the spirit of the present invention. .

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

第1図及び第2図は夫々本発明に係る杭基礎構造物の耐
震補強工法の一実施例の実施状況を示す縦断面凹皿に平
面図、第3図及び第4図は夫々本発明の他の実施例の実
施状況を示す縦断面凹皿に平面図、第5図及び第6図は
夫々従来の工法の実施状況を示す縦断面凹皿に平面図で
ある。
FIGS. 1 and 2 are plan views of a vertical cross-sectional concave plate showing an embodiment of the seismic reinforcement method for pile foundation structures according to the present invention, and FIGS. 3 and 4 are respectively plan views of the present invention. FIGS. 5 and 6 are plan views of a vertical cross-section concave plate showing the implementation status of another embodiment, and FIGS. 5 and 6 are plan views of a vertical cross-section concave plate showing the implementation status of the conventional construction method, respectively.

Claims (1)

【特許請求の範囲】[Claims] 地下室や基礎根入部がないか、または基礎根入部の浅い
杭基礎によつて支持された構造物の外周地盤内に連続地
中壁を構築したのち、同地中壁と前記構造物の基礎梁と
をスラブ及び/または繋ぎ梁で連結し、地震時に杭に加
わる水平力を前記連続壁に分担せしめることを特徴とす
る杭基礎構造物の耐震補強工法。
After constructing a continuous underground wall in the outer ground of a structure that does not have a basement or a foundation root, or is supported by a pile foundation with a shallow foundation root, the underground wall and the foundation beam of the structure are constructed. A method for seismic reinforcement of a pile foundation structure, characterized in that the walls are connected by a slab and/or a connecting beam, and the horizontal force applied to the pile during an earthquake is shared by the continuous wall.
JP61000071A 1986-01-06 1986-01-06 Seismic retrofitting method for pile foundation structure Expired - Lifetime JPH063029B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP61000071A JPH063029B2 (en) 1986-01-06 1986-01-06 Seismic retrofitting method for pile foundation structure

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP61000071A JPH063029B2 (en) 1986-01-06 1986-01-06 Seismic retrofitting method for pile foundation structure

Publications (2)

Publication Number Publication Date
JPS62160321A true JPS62160321A (en) 1987-07-16
JPH063029B2 JPH063029B2 (en) 1994-01-12

Family

ID=11463947

Family Applications (1)

Application Number Title Priority Date Filing Date
JP61000071A Expired - Lifetime JPH063029B2 (en) 1986-01-06 1986-01-06 Seismic retrofitting method for pile foundation structure

Country Status (1)

Country Link
JP (1) JPH063029B2 (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH03244714A (en) * 1990-02-21 1991-10-31 Taisei Corp Construction of base pile
JP2005016292A (en) * 2003-05-30 2005-01-20 Toda Constr Co Ltd Combined footing of pile and diaphragm wall
JP2007009421A (en) * 2005-06-28 2007-01-18 Shimizu Corp Foundation structure of structure
CN105756075A (en) * 2016-02-29 2016-07-13 山东电力工程咨询院有限公司 Horizontal bearing combined foundation based on piles and underground continuous wall and method

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS57101151U (en) * 1980-12-05 1982-06-22

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS57101151U (en) * 1980-12-05 1982-06-22

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH03244714A (en) * 1990-02-21 1991-10-31 Taisei Corp Construction of base pile
JP2005016292A (en) * 2003-05-30 2005-01-20 Toda Constr Co Ltd Combined footing of pile and diaphragm wall
JP2007009421A (en) * 2005-06-28 2007-01-18 Shimizu Corp Foundation structure of structure
CN105756075A (en) * 2016-02-29 2016-07-13 山东电力工程咨询院有限公司 Horizontal bearing combined foundation based on piles and underground continuous wall and method

Also Published As

Publication number Publication date
JPH063029B2 (en) 1994-01-12

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