JP5801766B2 - Joining method of superstructure and ground improvement pile - Google Patents
Joining method of superstructure and ground improvement pile Download PDFInfo
- Publication number
- JP5801766B2 JP5801766B2 JP2012139886A JP2012139886A JP5801766B2 JP 5801766 B2 JP5801766 B2 JP 5801766B2 JP 2012139886 A JP2012139886 A JP 2012139886A JP 2012139886 A JP2012139886 A JP 2012139886A JP 5801766 B2 JP5801766 B2 JP 5801766B2
- Authority
- JP
- Japan
- Prior art keywords
- geotextile
- ground improvement
- improvement pile
- pile
- crushed stone
- 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.)
- Active
Links
- 238000000034 method Methods 0.000 title claims description 15
- 239000004746 geotextile Substances 0.000 claims description 56
- 239000004575 stone Substances 0.000 claims description 29
- 238000010276 construction Methods 0.000 claims description 5
- 238000010586 diagram Methods 0.000 description 4
- 239000002689 soil Substances 0.000 description 4
- 238000009434 installation Methods 0.000 description 2
- 230000009466 transformation Effects 0.000 description 2
- 230000005540 biological transmission Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
Landscapes
- Pit Excavations, Shoring, Fill Or Stabilisation Of Slopes (AREA)
- Road Paving Structures (AREA)
- Railway Tracks (AREA)
- Consolidation Of Soil By Introduction Of Solidifying Substances Into Soil (AREA)
Description
本発明は、ジオテキスタイル土のうを用いた上部構造物と地盤改良杭の接合工法に関するものである。 The present invention relates to a method for joining an upper structure and a ground improvement pile using geotextile sandbags.
従来、上部構造物と地盤改良杭の接合工法としては、図６に示すように、盛土１００内に地盤改良杭１０１を施工し、この地盤改良杭１０１の天端に砕石層１０２を敷設し、その上に上部構造物（コンクリート路盤）１０３の構築を行うようにしていた（下記特許文献１参照）。 Conventionally, as shown in FIG. 6, the ground improvement pile 101 is constructed in the embankment 100 and the crushed stone layer 102 is laid on the top of the ground improvement pile 101 as shown in FIG. On top of that, an upper structure (concrete roadbed) 103 was constructed (see Patent Document 1 below).
しかしながら、かかるパイルスラブ式盛土においては、地盤改良杭１０１の天端と上部構造物１０３間には直接砕石層１０２が設けられるため、図７（ａ），（ｂ），（ｃ）に示すように、上部構造物１０３がコンクリート路盤である場合には列車荷重などによる経年的な繰返し鉛直荷重がかかったり、地震により地盤改良杭１０１の周辺盛土・軟弱地盤が沈下したりすることで、天端の砕石層１０２の砕石１０２Ａのこぼれだしなど、砕石層１０２が崩壊し上部構造物１０３の変状（例えば、沈下１０３Ａ）が発生するという問題があった。 However, in this pile slab type embankment, since the crushed stone layer 102 is directly provided between the top end of the ground improvement pile 101 and the upper structure 103, as shown to FIG. 7 (a), (b), (c). In addition, when the upper structure 103 is a concrete roadbed, repeated vertical load due to trains or the like is applied, or the surrounding embankment / soft ground of the ground improvement pile 101 sinks due to an earthquake. There was a problem that the crushed stone layer 102 collapsed and deformation of the upper structure 103 (for example, settlement 103A) occurred, such as spilling of the crushed stone 102A of the crushed stone layer 102.
また、図８に示すように、地盤改良杭１０１が上部構造物１０３と結合している場合や、地盤改良杭１０１上に直接上部構造物１０３が構築されている場合には、地震時の上部構造物１０３の水平力による地盤改良杭１０１の損傷が懸念され、上部構造物１０３に対し鉛直力を保持しながら、水平力を極力作用させないような地盤改良杭１０１と上部構造物の接合構造が望まれている。 Moreover, as shown in FIG. 8, when the ground improvement pile 101 is combined with the upper structure 103, or when the upper structure 103 is directly constructed on the ground improvement pile 101, the upper part at the time of the earthquake There is a concern about the damage of the ground improvement pile 101 due to the horizontal force of the structure 103, and there is a joint structure between the ground improvement pile 101 and the upper structure that prevents the horizontal force from acting as much as possible while maintaining the vertical force on the upper structure 103. It is desired.
本発明は、上記状況に鑑みて、上部構造物と地盤改良杭の接合工法において、地盤改良杭の天端と上部構造物間の砕石層をジオテキスタイルで包括し、土のう形状とすることで砕石層の崩壊を防止する、上部構造物と地盤改良杭の接合工法を提供することを目的とする。 In view of the above situation, in the present invention, in the joining method of the upper structure and the ground improvement pile, the crushed stone layer between the top edge of the ground improvement pile and the upper structure is covered with geotextile, and the crushed stone layer is formed into a sandbag shape. The purpose is to provide a method of joining the superstructure and the ground improvement pile that prevents the collapse of the ground.
本発明は、上記目的を達成するために、
〔１〕地盤改良杭の天端と上部構造物間の砕石層をジオテキスタイルで包括し、土のう形状の砕石層とする上部構造物と地盤改良杭の接合工法であって、前記土のう形状の砕石層の施工は、地盤改良杭の上部にジオテキスタイルを直角に重ねて敷設し、この敷設したジオテキスタイル上に土のうを設置し、このジオテキスタイルの端部を折り返し、このジオテキスタイル角部を結束し、このジオテキスタイルの天端を固定することで行い、このジオテキスタイル土のう天端に直接路盤コンクリートを打設することを特徴とする。
〔２〕上記〔１〕記載の上部構造物と地盤改良杭の接合工法において、前記上部構造物がコンクリート路盤であることを特徴とする。
In order to achieve the above object, the present invention provides
[1] A method of joining an upper structure and a ground improvement pile that includes a crushed stone layer between the top edge of the ground improvement pile and the upper structure by geotextile, and forms a crushed stone crushed stone layer. In this construction, the geotextile is laid on top of the ground improvement pile at a right angle, a sandbag is installed on this laid geotextile, the end of this geotextile is folded back, the corner of this geotextile is tied, and the top of this geotextile This is done by fixing the ends, and the roadbed concrete is placed directly on the top of the geotextile .
[2] In [1] Symbol mounting of superstructure and bonding method of ground improvement pile, characterized in that said upper structure is a concrete roadbed.
本発明によれば、次のような効果を奏することができる。 According to the present invention, the following effects can be achieved.
（１）地盤改良杭の天端と前記上部構造物間の砕石層をジオテキスタイルで包括し、土のう形状とすることにより、砕石層の崩壊を防止する。 (1) The crushed stone layer between the top edge of the ground improvement pile and the upper structure is covered with geotextiles to form a sandbag, thereby preventing the crushed stone layer from collapsing.
（２）地盤改良杭の天端と前記上部構造物間の砕石層をジオテキスタイルで包括し、土のう形状とすることにより、上部構造物に対し、鉛直力は保持し、水平力の改良杭への伝達を低減する。 (2) The crushed stone layer between the top edge of the ground improvement pile and the upper structure is covered with geotextile, and by making a sandbag shape, the vertical force is maintained against the upper structure, and the horizontal force is applied to the improved pile. Reduce transmission.
本発明の上部構造物と地盤改良杭の接合工法は、地盤改良杭の天端と上部構造物間の砕石層をジオテキスタイルで包括し、土のう形状の砕石層とする上部構造物と地盤改良杭の接合工法であって、前記土のう形状の砕石層の施工は、地盤改良杭の上部にジオテキスタイルを直角に重ねて敷設し、この敷設したジオテキスタイル上に土のうを設置し、このジオテキスタイルの端部を折り返し、このジオテキスタイル角部を結束し、このジオテキスタイルの天端を固定することで行い、このジオテキスタイル土のう天端に直接路盤コンクリートを打設するようにした。 The method of joining the superstructure and the ground improvement pile according to the present invention is that the crushed stone layer between the top of the ground improvement pile and the top structure is covered with geotextiles, and the superstructure and the ground improvement pile of the soil improvement pile are made into a crust-like crushed stone layer . In the construction method, the sandstone-shaped crushed stone layer is constructed by laying geotextiles on top of the ground improvement piles at right angles, installing a sandbag on the laid geotextile, and folding the end of this geotextile, The geotextile corners were tied together and the top of the geotextile was fixed, and the roadbed concrete was placed directly on the top of the geotextile.
以下、本発明の実施の形態について詳細に説明する。 Hereinafter, embodiments of the present invention will be described in detail.
図１は本発明の実施例を示す地盤改良杭の天端のジオテキスタイル土のう処理を示す断面図、図２は図１のＡ−Ａ平面図である。 FIG. 1 is a cross-sectional view showing a geotextile capping process at the top of a ground improvement pile according to an embodiment of the present invention, and FIG. 2 is a plan view taken along the line AA in FIG.
これらの図に示すように、盛土１内に地盤改良杭２を施工し、この地盤改良杭２の天端２Ａにより上部構造物（コンクリート路盤）４を保持するジオテキスタイルで包括した土のう形状の砕石層（ジオテキスタイル土のう）３を施工する。 As shown in these figures, a ground-improved pile 2 is constructed in the embankment 1, and a crust-shaped crushed stone layer covered with geotextile that holds the upper structure (concrete roadbed) 4 by the top end 2 </ b> A of the ground-improved pile 2. (Geotextile dough) 3 is constructed.
このように、砕石層３が崩壊することで上部構造物４に影響を与えやすい箇所である地盤改良杭２の天端２Ａにジオテキスタイル土のう３を施工することにより、砕石層の崩壊を防止する。 Thus, crushed stone layer 3 by applying a geotextile sandbags 3 in crest 2A of ground improvement pile 2 is a portion easily affect the upper structure 4 by collapse, preventing the collapse of the crushed stone layer.
以下、そのジオテキスタイルで包括した土のう形状の砕石層の施工方法について説明する。 Hereinafter, the construction method of the crust-shaped crushed stone layer included in the geotextile will be described.
図３は本発明に係るジオテキスタイル土のうに用いるジオテキスタイルの展開図、図４はそのジオテキスタイル土のうの組み立て図である。
（１）ジオテキスタイル敷設
ジオテキスタイルを図３に示す形状に切断し、図４（ａ）に示すように、ジオテキスタイル１１（土のう用部材）を地盤改良杭の上部に直角に重ねて敷設する。
（２）土のうの設置
図４（ｂ）に示すように、敷設したジオテキスタイル１１上に土のう（ＲＲＲ用土のう）１２を設置する。
（３）ジオテキスタイルの折り返し端部処理
図４（ｃ）に示すように、ジオテキスタイル１１の端部を折り返し、角部を結束する。具体的には結束バンド１３による結束を行う。
（４）ジオテキスタイルの天端固定
図４（ｄ）に示すように、ジオテキスタイル１１の天端面を仮止めピン１４、仮止めバンド１５で固定し、ジオテキスタイル土のう１６として施工される。
（５）路盤コンクリートの打設
ジオテキスタイル土のう天端に直接路盤コンクリートを打設する。
FIG. 3 is a development view of a geotextile used for the geotextile sandbag according to the present invention, and FIG. 4 is an assembly view of the geotextile sandbag.
(1) Geotextile installation The geotextile is cut into the shape shown in FIG. 3, and as shown in FIG. 4 (a), the geotextile 11 (member for earthwork) is laid on top of the ground improvement pile at a right angle.
(2) Installation of sandbags As shown in FIG. 4B, a sandbag (RRR sandbag) 12 is installed on the laid geotextile 11.
(3) Geotextile folding end processing As shown in FIG. 4C, the end of the geotextile 11 is folded and the corners are bound. Specifically, binding is performed by the binding band 13.
(4) Fixing the top end of the geotextile As shown in FIG. 4D, the top end surface of the geotextile 11 is fixed with a temporary fixing pin 14 and a temporary fixing band 15 and is constructed as a geotextile paddle 16.
(5) Placement of roadbed concrete Placement of roadbed concrete directly at the top of the geotextile.
なお、形状、製作方法はこれに限定されるものではない。ジオテキスタイル土のうの大きさは、図１及び図２に示されるように地盤改良杭の面積と同等程度とする。 In addition, a shape and a manufacturing method are not limited to this. The size of the geotextile sandbag is approximately the same as the area of the ground improvement pile as shown in FIGS.
図５は本発明のジオテキスタイル土のうによる地震時慣性力の地盤改良杭への影響の低減の様子を示す模式図である。 FIG. 5 is a schematic view showing a state of reducing the influence of the inertial force at the time of earthquake on the ground improvement pile by the geotextile sandbag of the present invention.
図５において、盛土１内に地盤改良杭２を施工し、この地盤改良杭２により上部構造物（コンクリート路盤）４を保持するために、本発明のジオテキスタイルで包括した土のう形状の砕石層３を施工するようにしている。本発明によれば、図７に示したような地震時の地盤改良杭１０１の周辺盛土・軟弱地盤の沈下に伴い、地盤改良杭１０１の天端の砕石層１０２が崩壊し、上部構造物１０３に変状（沈下等）が発生する問題を低減させることができる。また、図８に示すように、地盤改良杭１０１が上部構造物１０３と結合している場合や、地盤改良杭１０１上に直接上部構造物１０３が構築されている場合、地震時の上部構造物１０３の水平力は杭頭部にもかかるが、ジオテキスタイルによる砕石の巻き込みによりこの杭頭部水平力が低減されるので、地盤改良杭１０１の損傷が懸念されることもない。 5, the ground improvement pile 2 is construction in the embankment 1, in order to maintain this ground improvement pile 2 superstructure (the concrete roadbed) 4, a crushed stone layer 3 of sandbags shape and comprehensive in geotextile of the present invention I try to construct it. According to the present invention, the crushed stone layer 102 at the top of the ground improvement pile 101 collapses with the settlement of the surrounding embankment / soft ground around the ground improvement pile 101 as shown in FIG. The problem of occurrence of deformation (settlement etc.) can be reduced. Moreover, as shown in FIG. 8, when the ground improvement pile 101 is combined with the upper structure 103, or when the upper structure 103 is constructed directly on the ground improvement pile 101, the upper structure at the time of an earthquake. Although the horizontal force of 103 is also applied to the pile head, the pile head horizontal force is reduced by the inclusion of crushed stone by geotextile, so that the ground improvement pile 101 is not damaged.
なお、本発明は上記実施例に限定されるものではなく、本発明の趣旨に基づき種々の変形が可能であり、これらを本発明の範囲から排除するものではない。 In addition, this invention is not limited to the said Example, Based on the meaning of this invention, a various deformation | transformation is possible and these are not excluded from the scope of the present invention.
本発明の上部構造物と地盤改良杭の接合工法は、地盤改良杭の天端と上部構造物間の砕石層をジオテキスタイルで包括し、土のう形状とすることで砕石層の崩壊を防止する、上部構造物と地盤改良杭の接合工法として利用可能である。 The method of joining the superstructure and the ground improvement pile of the present invention is to include a crushed stone layer between the top of the ground improvement pile and the superstructure by geotextile, and prevent the collapse of the crushed stone layer by making it a sandbag shape. It can be used as a method for joining structures and ground improvement piles.
１ 盛土
２ 地盤改良杭
２Ａ 地盤改良杭の天端
３，１６ ジオテキスタイルで包括した土のう形状の砕石層（ジオテキスタイル土のう）
４ 上部構造物（コンクリート路盤）
１１ ジオテキスタイル
１２ 土のう（ＲＲＲ用土のう）
１３ 結束バンド
１４ 仮止めピン
１５ 仮止めバンド
1 Embankment 2 Soil Improvement Pile 2A Top of Soil Improvement Pile 3,16 Soil-shaped crushed stone layer covered with geotextile (Geotextile Soil)
4 Superstructure (concrete roadbed)
11 Geotextiles 12 Dougou (Dors for RRR)
13 Bonding band 14 Temporary fastening pin 15 Temporary fastening band
Claims (2)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2012139886A JP5801766B2 (en) | 2012-06-21 | 2012-06-21 | Joining method of superstructure and ground improvement pile |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2012139886A JP5801766B2 (en) | 2012-06-21 | 2012-06-21 | Joining method of superstructure and ground improvement pile |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JP2014005600A JP2014005600A (en) | 2014-01-16 |
| JP5801766B2 true JP5801766B2 (en) | 2015-10-28 |
Family
ID=50103569
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2012139886A Active JP5801766B2 (en) | 2012-06-21 | 2012-06-21 | Joining method of superstructure and ground improvement pile |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP5801766B2 (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105735074B (en) * | 2015-12-07 | 2018-07-24 | 长沙学院 | Reinforced earth body sticks distortion of elastic-plastic measuring method, construction method and tensioning system |
| JP7100434B2 (en) * | 2017-08-22 | 2022-07-13 | 公益財団法人鉄道総合技術研究所 | Foundation structure of structure and foundation construction method of structure |
| CN111379203B (en) * | 2020-04-23 | 2022-07-01 | 山东高速股份有限公司 | Combined settling device and settling method and application of geogrid reinforcement and membrane bag grouting |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0369721A (en) * | 1989-08-09 | 1991-03-26 | Shimizu Corp | Steep gradient banking |
| JPH11181792A (en) * | 1997-12-22 | 1999-07-06 | Hamamatsu Juuki Koji Kk | Foundation material storage device for improving house foundation |
| JP2005248523A (en) * | 2004-03-03 | 2005-09-15 | Shimizu Corp | Pile head joint structure |
| JP4874739B2 (en) * | 2006-08-17 | 2012-02-15 | 公益財団法人鉄道総合技術研究所 | Construction method of embankment on soft ground and its embankment structure |
| DE102009007931A1 (en) * | 2009-02-06 | 2010-08-12 | Soiltec Gmbh | Substructure for buildings |
| JP5692840B2 (en) * | 2010-03-26 | 2015-04-01 | 公益財団法人鉄道総合技術研究所 | Pile slab embankment and its construction method |
-
2012
- 2012-06-21 JP JP2012139886A patent/JP5801766B2/en active Active
Also Published As
| Publication number | Publication date |
|---|---|
| JP2014005600A (en) | 2014-01-16 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| TWI448608B (en) | Connected wall structure of steel pipe sheet and its construction method | |
| JP5801766B2 (en) | Joining method of superstructure and ground improvement pile | |
| JP2005226326A (en) | Reinforcing structure for existing pier foundation and reinforcing method for the existing pier foundation | |
| JP4318749B1 (en) | Slope protection device | |
| KR100755754B1 (en) | Nested mattress gabion and revetment method using same | |
| JP5866735B2 (en) | Construction method of leaning type retaining wall | |
| JP2010203114A (en) | Soil retaining construction method using large-sized sandbag and restraining pile together and soil retaining structure by the method | |
| JP5208904B2 (en) | Wall construction method using bags | |
| JP5977177B2 (en) | Seismic reinforcement method for retaining wall | |
| JP5714338B2 (en) | Embankment reinforced earth wall construction method and temporary restraint material for embankment reinforced earth wall used therefor | |
| JP5835110B2 (en) | Quay-quake-proof structure and quake-quake-proof reinforcement method | |
| KR101528725B1 (en) | The slope reinforcement method using natural stone | |
| JP5697854B2 (en) | Liquefaction countermeasure structure | |
| JP6219645B2 (en) | Seismic reinforcement method for oblique abutment by reducing earth pressure | |
| WO2010131330A1 (en) | Method of suppressing deformation of embankment | |
| JP2011214254A (en) | Reinforcing structure of banking | |
| JP6476095B2 (en) | Reinforced soil integrated precast lattice frame method | |
| JP2010077639A (en) | Method for rapidly restoring damaged fill by combining large-sized sandbag with rod-like reinforcing material | |
| JP4318748B1 (en) | Slope protection device | |
| JP6190268B2 (en) | Support structure | |
| JP6055588B2 (en) | Portal ramen bridge with improved vertical load dispersion | |
| JP5587725B2 (en) | Reinforcement method for existing foundations for structures | |
| JP5501921B2 (en) | Basic structure for structure and construction method thereof | |
| JP4373489B1 (en) | Slope protection device | |
| JP5065131B2 (en) | Wall work in reinforced embankment |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| A621 | Written request for application examination |
Free format text: JAPANESE INTERMEDIATE CODE: A621 Effective date: 20140908 |
|
| A977 | Report on retrieval |
Free format text: JAPANESE INTERMEDIATE CODE: A971007 Effective date: 20150521 |
|
| A131 | Notification of reasons for refusal |
Free format text: JAPANESE INTERMEDIATE CODE: A131 Effective date: 20150616 |
|
| A521 | Request for written amendment filed |
Free format text: JAPANESE INTERMEDIATE CODE: A523 Effective date: 20150706 |
|
| 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: 20150825 |
|
| A61 | First payment of annual fees (during grant procedure) |
Free format text: JAPANESE INTERMEDIATE CODE: A61 Effective date: 20150827 |
|
| R150 | Certificate of patent or registration of utility model |
Ref document number: 5801766 Country of ref document: JP Free format text: JAPANESE INTERMEDIATE CODE: R150 |
|
| R250 | Receipt of annual fees |
Free format text: JAPANESE INTERMEDIATE CODE: R250 |
|
| R250 | Receipt of annual fees |
Free format text: JAPANESE INTERMEDIATE CODE: R250 |
|
| R250 | Receipt of annual fees |
Free format text: JAPANESE INTERMEDIATE CODE: R250 |