JPH0473310A - Construction technique of structure in wear subsoil - Google Patents
Construction technique of structure in wear subsoilInfo
- Publication number
- JPH0473310A JPH0473310A JP18665690A JP18665690A JPH0473310A JP H0473310 A JPH0473310 A JP H0473310A JP 18665690 A JP18665690 A JP 18665690A JP 18665690 A JP18665690 A JP 18665690A JP H0473310 A JPH0473310 A JP H0473310A
- Authority
- JP
- Japan
- Prior art keywords
- soft ground
- ground
- subsoil
- abutment
- weak
- 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
Links
- 238000010276 construction Methods 0.000 title claims description 9
- 238000000034 method Methods 0.000 title claims description 4
- 229920006328 Styrofoam Polymers 0.000 claims description 22
- 239000008261 styrofoam Substances 0.000 claims description 22
- 229920006327 polystyrene foam Polymers 0.000 claims description 15
- 229920006248 expandable polystyrene Polymers 0.000 claims description 4
- PPBRXRYQALVLMV-UHFFFAOYSA-N Styrene Chemical compound C=CC1=CC=CC=C1 PPBRXRYQALVLMV-UHFFFAOYSA-N 0.000 abstract description 10
- 239000010426 asphalt Substances 0.000 abstract description 2
- 239000004567 concrete Substances 0.000 abstract description 2
- 239000004576 sand Substances 0.000 abstract description 2
- 239000006260 foam Substances 0.000 description 3
- 239000003673 groundwater Substances 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000007667 floating Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 1
- 239000011150 reinforced concrete Substances 0.000 description 1
- 239000002689 soil Substances 0.000 description 1
Landscapes
- Foundations (AREA)
- Bridges Or Land Bridges (AREA)
- Investigation Of Foundation Soil And Reinforcement Of Foundation Soil By Compacting Or Drainage (AREA)
Abstract
Description
【発明の詳細な説明】
（イ）産業上の利用分野
本発明は、地盤の沈下及び地盤の側方流動を防止する軟
弱地盤における構築物の構築工法に関する。DETAILED DESCRIPTION OF THE INVENTION (a) Field of Industrial Application The present invention relates to a method for constructing structures on soft ground that prevents ground subsidence and lateral flow of the ground.
（ロ）従来の技術
従来、軟弱地盤における河川岸に橋台、橋脚、擁壁等を
構築しており、例えば、橋台を構築する際に、その背面
の軟弱地盤上に、道路を施工している。(b) Conventional technology Traditionally, bridge abutments, piers, retaining walls, etc. have been constructed on river banks on soft ground. For example, when building a bridge abutment, a road is constructed on the soft ground behind it. .
しかも、軟弱地盤に構造物を構築するには、軟弱地盤の
安定性を図る為に、押さえ盛土工法が採用されている。Furthermore, when constructing structures on soft ground, the press embankment method is used to ensure the stability of the soft ground.
かかる工法は、例えば、橋を架設する為の橋台を形成す
る際に、その橋台の背面の軟弱地盤に土を盛り、同盛土
の側面を固めて、道路を構築しており、しかも、その法
面勾配をゆるくして、すべりに対するモーメントを増加
させ、盛土のすべり破壊を防止している。In this construction method, for example, when forming an abutment for constructing a bridge, soil is piled up on the soft ground behind the abutment and the sides of the embankment are hardened to construct a road. The surface slope is made gentler to increase the moment against sliding and prevent the embankment from sliding and failing.
さらに、盛土の側面が急に高くなっていないので、軟弱
地盤の側方流動も小さく抑えることができるものである
。Furthermore, since the sides of the embankment do not rise suddenly, lateral flow in soft ground can be suppressed to a small level.
（ハ）発明が解決しようとする課題
ところが、上記の軟弱地盤での橋台構築工法は、以下の
ような欠点を有している。(c) Problems to be Solved by the Invention However, the above-mentioned bridge abutment construction method on soft ground has the following drawbacks.
■橋を架設する橋台の背面の盛土にかかる偏荷重（盛土
の重さ、車等の走行による荷重）により、地盤の沈下及
び橋台を境にした地盤の側方流動が生じ、その結果、橋
台と盛土との取付は部において、不同沈下が発生する。■ Unbalanced loads (the weight of the embankment, the loads from vehicles, etc.) applied to the embankment behind the abutment on which the bridge is constructed cause ground subsidence and lateral flow of the ground across the abutment, resulting in the abutment Uneven settlement occurs in the connection between the ground and the embankment.
■地盤の沈下・側方流動によって、橋台は、変位すると
ともに、基礎においては、側方流動やネガティブフリク
シラン等が発生する。■Due to ground subsidence and lateral flow, bridge abutments are displaced, and lateral flow and negative friction occurs at the foundation.
本発明は、上記の課題を解決することができる軟弱地盤
における構築物の構築工法を提供することを目的とする
。An object of the present invention is to provide a construction method for a structure on soft ground that can solve the above problems.
（ニ）課題を解決するための手段
本発明では、軟弱地盤に、橋台等の構築物を構築すると
ともに、その構築物の背面部の軟弱地盤に、積層した発
泡スチロール板を埋設し、同地盤の沈下及び側方流動等
を防止することを特徴とする軟弱地盤における構築物の
構築工法を提供するものである。(d) Means for Solving the Problems In the present invention, a structure such as a bridge abutment is constructed on soft ground, and laminated polystyrene foam plates are buried in the soft ground at the back of the structure to prevent subsidence of the ground. The present invention provides a construction method for a structure on soft ground, which is characterized by preventing lateral flow and the like.
また、本発明では、軟弱地盤に面した河川岸に、橋台等
の構築物を構築するとともに、同構築物の背面の軟弱地
盤上に、道路を施工し、さらに、その構築物の背面部の
軟弱地盤に、積層した発泡スチロール板を埋設し、しか
も、同発泡スチロール板上に、同発泡スチロール板を安
定させる床板を敷設して、その上に路面を形成し、同地
盤の沈下及び側方流動等を防止することを特徴としてい
る。Furthermore, in the present invention, a structure such as a bridge abutment is constructed on a river bank facing soft ground, a road is constructed on the soft ground behind the structure, and a road is constructed on the soft ground behind the structure. , Laminated polystyrene foam boards are buried, and a floor plate is laid on top of the polystyrene foam boards to stabilize the polystyrene foam boards, and a road surface is formed on top of this to prevent subsidence and lateral flow of the ground. It is characterized by
また、本発明では、軟弱地盤に、積層した発泡スチロー
ル板を埋設し、しかも、同発泡スチロール板を、上方に
向けて漸次幅広状に配設して、同地盤の沈下及び側方流
動等を防止することを特徴としている。Further, in the present invention, laminated polystyrene foam plates are buried in soft ground, and the polystyrene foam plates are arranged in a shape that gradually becomes wider upwards to prevent subsidence and lateral flow of the ground. It is characterized by
（ホ）作用及び効果
本発明では、例えば、軟弱地盤に面した河川岸に、橋台
を構築し、両岸の橋台に橋を架設する場合、同軟弱地盤
上に、橋と接続する道路を施工するものであるが、かか
る軟弱地盤に、積層した多数の発泡スチロール板を埋設
していることにより、道路上を大型自動車等が走行する
際に、同発泡スチロール板によって、同地盤に係る大型
自動車等の荷重を軽減し、地盤の沈下及び側方流動の発
生を防止することができる。(E) Functions and Effects In the present invention, for example, when a bridge abutment is constructed on a river bank facing soft ground and a bridge is constructed on the abutments on both banks, a road connecting to the bridge is constructed on the same soft ground. However, by burying a large number of laminated polystyrene foam plates in such soft ground, when large vehicles, etc. run on the road, the polystyrene foam plates will prevent large vehicles, etc., from moving on the same ground. It is possible to reduce the load and prevent ground subsidence and lateral flow.
そして、軟弱地盤における不同沈下の発生等を可及的に
回避することができる。In addition, the occurrence of uneven settlement in soft ground can be avoided as much as possible.
また、軟弱地盤中に埋設した発泡スチロール板上に、床
板を敷設して、軟弱地盤から地下水が湧出しても、同ス
チロール板が浮上しないように保持することができる。Furthermore, by laying a floorboard on a Styrofoam board buried in soft ground, the Styrofoam board can be held so that it does not float up even if groundwater gushes out from the soft ground.
さらに、軟弱地盤中に埋設した発泡スチロール板を、上
方に向けて漸次幅広状としている為に、自動車の偏荷重
を発泡スチロール板によって軟弱地盤が均等に受けて、
可及的に発泡スチロール板の沈下を防止することができ
る。Furthermore, since the Styrofoam plates buried in the soft ground are gradually widened upward, the uneven load of the car is evenly received by the Styrofoam plates, and the soft ground is
It is possible to prevent the Styrofoam board from sinking as much as possible.
従って、本発明によれば、自動車等の走行によって橋台
を構築した軟弱地盤に荷重がかかっても、その荷重を発
泡スチロール板によって軽減させることにより、地盤の
沈下及び側方流動を防止して軟弱地盤における安定化を
図ることができる。Therefore, according to the present invention, even if a load is applied to the soft ground on which the bridge abutment is constructed due to the driving of automobiles, etc., the load is reduced by the foamed polystyrene plates, thereby preventing ground subsidence and lateral flow, and thereby reducing the soft ground. can be stabilized.
（へ）実施例
本１発明の実施例を図面にもとづき詳説すれば、第１図
の説明図において、背面に軟弱地盤Ａが広がる河川岸に
は、構造物としての橋台１を構築し、両岸の橋台ｌに橋
２を架設するとともに、同軟弱地盤上に、橋２に接続さ
れた道路Ｂの構築を行っている。(F) Embodiment The embodiment of the present invention 1 will be explained in detail based on the drawings. In the explanatory diagram of FIG. Bridge 2 is being constructed on abutment l on the shore, and road B connected to bridge 2 is being constructed on the same soft ground.
そこで、本発明にかかる軟弱地盤Ａにおける橋台ｌの構
築工法について詳説する。Therefore, the construction method of the bridge abutment l on the soft ground A according to the present invention will be explained in detail.
即ち、第１図に示すように、河川岸には、まず、杭ａを
打ち込んで、橋台ｌの基礎としており、この抗ａは、軟
弱地盤Ａの下層部における硬質の支持層Ｃに至り、同杭
ａ上にコンクリート打ちを行い、橋２を架設する為の橋
台１を形成している。That is, as shown in Fig. 1, piles a are first driven into the riverbank to serve as the foundation for the abutment l, and this resistance a reaches the hard support layer C in the lower layer of the soft ground A. Concrete is placed on the pile a to form an abutment 1 for constructing a bridge 2.
また、かかる橋台１の背面部における軟弱地盤Ａ上には
、軟弱地盤Ａの上層部の軟弱層りを掘削して、敷砂３を
介して多数の発泡スチロール板４を埋設している。Further, on the soft ground A at the back of the abutment 1, a large number of Styrofoam plates 4 are buried through the sand 3 by excavating the upper soft layer of the soft ground A.
本実施例では、多数の発泡スチロール板４を、軟弱地盤
Ａ内で積層しており、しかも、橋台ｌの背面に、発泡ス
チロール板４の一側面を当接して、発泡スチロール板４
と橋台１とを一体的にしている。In this embodiment, a large number of Styrofoam plates 4 are stacked in soft ground A, and one side of the Styrofoam plates 4 is brought into contact with the back surface of the abutment l.
and abutment 1 are integrated.
かかる発泡スチロール板４は、幅広状のものを３〜１５
メートルの深さで埋設して、自動車等の荷重を受けても
、沈下することなく、自動車を保持することができる。Such a Styrofoam board 4 has a width of 3 to 15 mm.
Even if it is buried at a depth of one meter and receives the load of an automobile, etc., it can hold the automobile without sinking.
また、かかる発泡スチロール板４上には、幅広状の鉄筋
コンクリート板よりなる床板５を敷設して、同板４の浮
上を防止し、その上に、アスファルト層７を介して路面
６を形成している。Furthermore, a floor plate 5 made of a wide reinforced concrete plate is laid on the styrofoam plate 4 to prevent the plate 4 from floating, and a road surface 6 is formed on it with an asphalt layer 7 interposed therebetween. .
そして、軟弱地盤Ａに地下水が湧出しても、かかる発泡
スチロール板４の浮上を防止して、路面６を安定した状
態に保持することができる。Even if groundwater gushes out into the soft ground A, the styrofoam board 4 can be prevented from floating, and the road surface 6 can be maintained in a stable state.
かかる工法によって、道路Ｂ上を走行する大型自動車の
荷重が軟弱地盤Ａにかかった際に、発泡スチロール板４
により、その荷重を軽減して、同地盤Ａの沈下及び側方
流動の発生を防止することができる。With this construction method, when the load of a large vehicle traveling on road B is applied to soft ground A, the polystyrene foam board 4
Therefore, the load can be reduced and the subsidence of the ground A and the occurrence of lateral flow can be prevented.
また、本実施例では、軟弱地盤Ａの発泡スチロール板４
を、下層部より上層部にわたり、漸次幅広状とした発泡
スチロール板４を積層している。In addition, in this embodiment, the styrofoam plate 4 on the soft ground A is
Styrofoam plates 4 each having a gradually wider width are laminated from the lower layer to the upper layer.
そして、かかる軟弱地盤Ａに埋設した発泡スチロール板
４には、それぞれ段部８が設けられている。Each of the foamed polystyrene plates 4 buried in the soft ground A is provided with a stepped portion 8.
かかる発泡スチロール板４の段部８によって、自動車等
の走行によって、軟弱地盤Ａに偏荷重が係った際に、そ
の荷重を軟弱地盤Ａが均等に受けることとなり、発泡ス
チロール［４の沈下を防止し、発泡スチロール板４を可
及的に安定させることができる。Due to the stepped portion 8 of the Styrofoam board 4, when an uneven load is applied to the soft ground A due to the driving of a car, etc., the soft ground A receives the load evenly, thereby preventing the Styrofoam [4] from sinking. , the Styrofoam board 4 can be made as stable as possible.
また、本発明では、多数の発泡スチロール板４を積層し
たものであるが、他の実施例として、発泡スチロール板
４を肉厚状に形成して、軟弱地盤Ａに埋設してもよいも
のである。Further, in the present invention, a large number of styrene foam plates 4 are laminated, but as another embodiment, the styrene foam plates 4 may be formed thick and buried in the soft ground A.
・以上述べたように、本発明の実施例は、以下のような
効果を有している。- As described above, the embodiments of the present invention have the following effects.
本発明では、例えば、軟弱地盤Ａに面した河川岸に、橋
台１を構築し、両岸の橋台１に橋２を架設する場合、同
軟弱地盤Ａ上に、橋２と接続する道路Ｂを構築するもの
であるが、かかる軟弱地盤Ａに、積層した多数の発泡ス
チロール板４を埋設していることにより、道路Ｂ上を大
型自動車等が走行する際に、同発泡スチロール板４によ
って、同地盤Ａに係る大型自動車等の荷重を軽減させ、
地盤の沈下及び側方流動の発生を防止することができる
。In the present invention, for example, when constructing a bridge abutment 1 on a river bank facing soft ground A and constructing a bridge 2 on the abutments 1 on both banks, a road B connecting to the bridge 2 is constructed on the same soft ground A. However, by burying a large number of laminated polystyrene foam plates 4 in the soft ground A, when a large vehicle or the like travels on the road B, the polystyrene foam plates 4 will cause the same ground A to Reduce the load of large vehicles, etc. related to
Ground subsidence and lateral flow can be prevented.
そして、軟弱地盤Ａにおける不同沈下の発生等を可及的
に回避することができる。In addition, occurrence of uneven settlement in the soft ground A can be avoided as much as possible.
しかも、軟弱地盤Ａ中に埋設した発泡スチロール板４上
に、床板５を敷設して、軟弱地盤Ａから地下水が湧出し
ても、同スチロール板４が浮上しないように保持するこ
とができる。Moreover, by laying the floorboard 5 on the Styrofoam board 4 buried in the soft ground A, even if groundwater gushes out from the soft ground A, the Styrene foam board 4 can be held so as not to float up.
さらに、軟弱地盤Ａ中の発泡スチロール板４を、上方に
向けて漸次幅広状としている為に、自動車の偏荷重を同
発泡スチロール板４の段部８によって同地盤Ａが均等に
受け、同発泡スチロール板４の沈下を防止することがで
きる。Furthermore, since the Styrofoam board 4 in the soft ground A is gradually widened upward, the uneven load of the car is evenly received by the step part 8 of the Styrofoam board 4, and the Styrofoam board 4 subsidence can be prevented.
従って、本発明によれば、自動車等の走行によって橋台
１を構築した軟弱地盤Ａに荷重がかかっても、その荷重
を発泡スチロール板４によって軽減させることにより、
地盤Ａの沈下及び側方流動を防止し、軟弱地盤Ａにおけ
る安定化を図ることができる。Therefore, according to the present invention, even if a load is applied to the soft ground A on which the bridge abutment 1 is constructed due to the driving of automobiles, etc., by reducing the load with the foamed polystyrene board 4,
Subsidence and lateral flow of the ground A can be prevented, and the soft ground A can be stabilized.
第１図は本発明の軟弱地盤における構造物の構築工法の
説明図である。
回申、
Ａ：軟弱地盤
；橋台
２：橋
：発泡スチロール板
二段部FIG. 1 is an explanatory diagram of the construction method of a structure on soft ground according to the present invention. Circular, A: Soft ground; Abutment 2: Bridge: Styrofoam plate two-tiered section
Claims (1)
るとともに、 その構築物の背面部の軟弱地盤（Ａ）に、積層した発泡
スチロール板（４）を埋設し、 同地盤（Ａ）の沈下及び側方流動等を防止することを特
徴とする軟弱地盤における構築物の構築工法。 ２、軟弱地盤（Ａ）に面した河川岸に、橋台（１）等の
構築物を構築するとともに、同構築物の背面の軟弱地盤
（Ａ）上に、道路（Ｂ）を施工し、さらに、その構築物
の背面部の軟弱地盤（Ａ）に、積層した発泡スチロール
板（４）を埋設し、しかも、同発泡スチロール板（４）
上に、同発泡スチロール板（４）を安定させる床板（５
）を敷設して、その上に路面（６）を形成し、 同地盤（Ａ）の沈下及び側方流動等を防止することを特
徴とする請求項１に記載の軟弱地盤における構築物の構
築工法。 ３、軟弱地盤（Ａ）に、積層した発泡スチロール板（４
）を埋設し、 しかも、同発泡スチロール板（４）を、上方に向けて漸
次幅広状に配設して、 同地盤（Ａ）の沈下及び側方流動等を防止することを特
徴とする請求項１に記載の軟弱地盤における構築物の構
築工法。[Claims] 1. A structure such as an abutment (1) is constructed on soft ground (A), and laminated polystyrene foam plates (4) are buried in the soft ground (A) at the back of the structure. , A construction method for structures on soft ground characterized by preventing subsidence and lateral flow of the ground (A). 2. Construct structures such as bridge abutments (1) on the river bank facing the soft ground (A), and construct a road (B) on the soft ground (A) behind the structure. Laminated polystyrene foam plates (4) are buried in the soft ground (A) at the back of the structure, and the same polystyrene foam plates (4)
On top is a floor plate (5) that stabilizes the same Styrofoam plate (4).
) and forming a road surface (6) thereon to prevent subsidence and lateral flow of the ground (A), etc. . 3. Laminated polystyrene foam plates (4) on the soft ground (A)
) is buried, and furthermore, the foamed polystyrene plates (4) are arranged in a shape that gradually widens upward to prevent subsidence and lateral flow of the ground (A), etc. 1. The method for constructing a structure on soft ground according to 1.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP18665690A JPH0473310A (en) | 1990-07-12 | 1990-07-12 | Construction technique of structure in wear subsoil |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP18665690A JPH0473310A (en) | 1990-07-12 | 1990-07-12 | Construction technique of structure in wear subsoil |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0473310A true JPH0473310A (en) | 1992-03-09 |
Family
ID=16192389
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP18665690A Pending JPH0473310A (en) | 1990-07-12 | 1990-07-12 | Construction technique of structure in wear subsoil |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0473310A (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH10317307A (en) * | 1997-05-19 | 1998-12-02 | Dia Consultant:Kk | Road construction method |
| KR20020025856A (en) * | 2001-12-28 | 2002-04-04 | 이기홍 | Prevention of approach slab settlement by applying non-com paction abutment backfilling method |
| JP2003239276A (en) * | 2003-01-23 | 2003-08-27 | Dia Consultant:Kk | Road construction method |
| JP2006028796A (en) * | 2004-07-13 | 2006-02-02 | Narasaki Sangyo Co Ltd | Uneven step elimination structure of road |
| JP2010007459A (en) * | 2009-08-26 | 2010-01-14 | Kajima Corp | Structure for preventing lateral flow of ground |
-
1990
- 1990-07-12 JP JP18665690A patent/JPH0473310A/en active Pending
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH10317307A (en) * | 1997-05-19 | 1998-12-02 | Dia Consultant:Kk | Road construction method |
| KR20020025856A (en) * | 2001-12-28 | 2002-04-04 | 이기홍 | Prevention of approach slab settlement by applying non-com paction abutment backfilling method |
| JP2003239276A (en) * | 2003-01-23 | 2003-08-27 | Dia Consultant:Kk | Road construction method |
| JP2006028796A (en) * | 2004-07-13 | 2006-02-02 | Narasaki Sangyo Co Ltd | Uneven step elimination structure of road |
| JP2010007459A (en) * | 2009-08-26 | 2010-01-14 | Kajima Corp | Structure for preventing lateral flow of ground |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| JP6301718B2 (en) | Method for suppressing level difference in roadbed material laid across concrete and earth structures | |
| JPH10317307A (en) | Road construction method | |
| JPH02504050A (en) | Method for forming road and roadbed structures | |
| CN212561554U (en) | Backfill structure for high-soil-retaining hydraulic structure | |
| CN206189211U (en) | Road subgrade sedimentation preventing facility | |
| GB2300009A (en) | Foundations for poor soils | |
| KR100433653B1 (en) | Constructing method for the filling out abutement of bridge | |
| JP4699655B2 (en) | How to create steep banking | |
| CN216615676U (en) | A back cover structure suitable for soft plastic muddy river bed | |
| KR100297436B1 (en) | Methods for constructing a backfill of concrete structures | |
| JP3583181B2 (en) | Embankment construction method | |
| KR100397536B1 (en) | Lateral Movement Prevention Construction Method of Bridge Abutment for using Sheet piles | |
| JP2001271303A (en) | Road joint structure | |
| JPH03247801A (en) | Method for road construction | |
| JPH0352256Y2 (en) | ||
| JP3320580B2 (en) | Foundation construction method for offshore structures | |
| JPH0439281Y2 (en) | ||
| KR200220890Y1 (en) | Lateral Movement Prevention Structure of Bridge Abutment for using Sheet piles | |
| JP3760618B2 (en) | Direct foundation structure and its construction method | |
| JP2629914B2 (en) | Embankment structure | |
| JPH0536044Y2 (en) | ||
| KR102239807B1 (en) | A Method for the Construction of Wave dissipating Offshore Structures Using Cast in place General Concrete | |
| JPH08239842A (en) | Structure and method for liquefaction prevention | |
| JP3155456B2 (en) | Pile structure to be joined to floor slab connected to foam resin material, and construction method of pile structure | |
| JPH08260453A (en) | Construction method for driving structure and wall-shaped structure |